Aveling-Barford DX Roller, 8/10 ton

The weight of the roller is 8 tons, increased to 10 tons with ballast added by means of weights placed in a compartment in the frame.  The front roll is split in halves, so that uneven surfaces can be negotiated.

The roller must never be used for towing, as it is not designed to withstand any towing stress.

Its chief use is for rolling road foundations, stone pitching, tarmacadam or compaction work on fills.

This vehicle was shown in AP3036 (1st Edition) so was probably in use before 1944.

Forward speeds (normal rpm) - 3.75, 2.87 & 1.19 mph

• Diameter of rear rolls - 3 ft 11 in
• Width of rear rolls - 1 ft 8 in
• Diameter of front rolls - 3 ft 6 in
• Total rolling width - 5 ft 6 in
• Overlaps of rolls, each side - 4 in
• Wheelbase - 8 ft 2½ in
• Overall length - 15 ft 3 in
• Overall height - 6 ft 0 in (excluding awning)

Thomas Green Roller, 8/10 ton, Type DRM (later Mk 1)

1. This is a medium-heavy roller for road or runway construction, its normal all-up weight of somewhat over 8 tons being increased to 10 tons by the addition of water ballast when required.

2. The machine is powered by a Perkins 4-cylinder water-cooled diesel engine, and transmission is by a propeller shaft, through a 3-speed gearbox, clutch, and differential, to the hind rolls.  Two cone type clutches, one on each side of the gearbox, provide forward or reverse as required.  The differential can be locked to form a fixed drive when conditions are likely to set up wheelspin. 

3. The water ballast is carried in the rolls.  A two-tine scarifier is fitted behind the right-hand

Running gear - Steel rolls, one at front (split), 2 at rear.

This vehicle was shown in AP3036 (1st Edition) so was probably in use before 1944.  This entry has been amended up AL63.

Forward speeds - 1st - gear 4.5, 2nd gear - 2.5 mph, 3rd gear - 1.25 mph

• Overall length - 16 ft 0 in
• Overall width - 6 ft 0 in
• Overall height - 9 ft 0 in
• Ground Clearance - 1 ft

Wallis-Steevens Roller, 2½ tons

Wallis-Steevens Roller, 2½ tons, Types PE and PEU

1. The Wallis Steevens 2 ton rollers, Types PE and PEU are gasoline engined machines designed for light consolidation work.  The two types can be readily identified from the location of the starting gear; in Type PE rollers it is at the rear, whereas in Type PEU rollers, it is on the right-hand side.

2. The rollers are powered by a Morris 12/24 hp Industrial engine; this is a four cylinder four-stroke, side-valve, gasoline unit, provided with hand starting only.  Four speeds, in both forward and reverse directions, are available by operation of a clutch, a gear lever, and a reversing lever.

3. All Type PE rollers, and some Type PEU rollers, have provision for locking the differential in order to minimise wheel spin.  Some Type PE rollers, and all Type PEU rollers, have one-piece straight through hind axles.  On other Type PE rollers the hind axle is of the cambering type, though on most of these rollers the axle is permanently locked in the level position.  Where not locked, the cambering axle allows the hind rolls to follow a convex camber; when desired, however, these hind rolls can be locked in any position they have assumed.

4. Most Type PE rollers have two-piece hind rolls 26¾ in wide with a mild steel plate rim  on a cast-iron centre, which give a rolling width of 6 ft, but some have cast-iron, two-piece hind rolls, 15 in. wide, the rims of which are reversible to give alternative rolling widths of 3 ft. 6½ in. or 4 ft. 2½ in.  All Type PEU rollers, and a few Type PE rollers, have cast-iron one-piece hind rolls, 15 in. wide, which give a rolling width of 4 ft.

5. The brakes are of the external-contracting bind type, one being fitted to each hind roll centre; they are operated by a foot pedal or, for parking, by a hand screw.

6. Ancillary equipment consists of a canvas cover or a wooden awning with canvas side curtains a water tank with sprayers for each roll and a scarifier fitted in front of the left-hand hind roll.

MT required for transporting: -

• Plant transporter.

This vehicle was shown in AP3036 (1st Edition) so was probably in use before 1944.  Details appear in the 2nd Edition by the issue of AL44, by which time it had a revised designation.  This entry is amended to AL44.

• With two-piece hind rolls, 26¾ in wide - 6 ft 0 in
• With two-piece hind rolls, 15 in wide (max) - 4 ft 2½ in
• With two-piece hind rolls, 15 in wide (min) - 3 ft 6 in
• With one-piece hind rolls, 15 in wide - 4 ft 0 in

Speeds

• 1st - 1¼ mph
• 2nd - 2½ mph
• 3rd - 4¼ mph
• Reverse - 1 mph

Fuel consumption - ½ gallon per hour

With two-piece hind rolls, 15 in wide - 5,908 lb

With one-piece hind rolls, 15 in wide - 5,852 lb

Engine - 351 lb

Gearbox and clutch - 61 lb

• Overall length - 9 ft 6½ in
• Overall width - as rolling widths above
• Overall height - 5 ft 2 in (to top of steering wheel)
• Wheelbase - 5 ft 10½ in
• Turning circle - 18 ft 0 in
• Ground Clearance - 9 in (to bottom of scraper)
• Front rolls (two) - 2 ft 9 in dia x 1 ft wide
• Rear rolls (two) - 3 ft dia x 26¾ in or 15 in wide

Thomas Green Roller, 8/10 ton, Type DRM Mk 2

1. The Green roller is a medium-heavy roller powered by a Perkins diesel engine, Type P4, which is mounted in the rear of the machine; provision is made for approximately one ton of water ballast.
2. Transmission is by propeller shaft, through a flexible coupling at each end, to a 3-speed gearbox and spur and bevel gearing to the left-hand hind roll; a differential locking pin is provided in the roll for use when on soft ground, for rolling steep gradients, operating the scarifier, or to overcome wheel spin.  Two cone clutches are incorporated in the gearbox, one for forward movement and the other for reverse.  Gear changes should not be made whilst the roller is in motion.
3. The main electrical equipment comprises two 6-volt batteries connected in series, a generator and a starter motor.
4. The scarifier is fitted behind the right-hand hind roll.

MT required for transporting: -

• SMT, 20 ton, Low loading trailer or similar.

This item of equipment appears to have been added to the 2nd Edition by the issue of AL3.

Gear ratios - 1st - 143 to 1, 2nd - 59 to 1, 3rd - 44 to 1

Roller (with Scarifier) - 20,160 lb

Roller (with Scarifier and water ballast) - 22,400 lb

Engine - 400 lb

Speeds

• Rolling speeds (at 1,000 rpm) - 1st - gear 1¼ mph, 2nd gear - 2½ mph
• Finishing  speed (at 1,000 rpm) - 3rd gear - 4¼ mph
• Travelling  speed (at 1,000 rpm) - 3rd gear - 4¼ mph

• Overall length - 15 ft 9 in
• Overall width - 6 ft 1 in
• Overall height - 8 ft 9 in
• Wheelbase - 8 ft 0 in
• Ground Clearance - 1 ft 0 in (8 in with Scarifier fitted)
• Turning radius - 16 ft
• Front rolls - 3 ft 8 in diameter x 3 ft 4 in wide
• Hind rolls - 4 ft 7 in diameter x 1 ft 8 in wide
• Overlap - 3¾ in each side

Marshall 8/10 ton roller, Utility Model

1. The Marshall 'Utility' Roller is a medium-heavy roller powered by a Fordson V8 Industrial gasoline engine which is mounted in the centre of the machine.  Built into the machine, under the footplate, is a water tank of approximately 50 gall. capacity which can be filled as ballast, or as a supply for the spraying attachment.  The sprayer is operated by a belt driven rotary pump and controlled independently on all rolls.  The rolls themselves can be filled with water to increase the rolling weight.
2. Transmission is by a single plate dry-disc clutch and chain drive from the engine to a 2-speed gearbox and spur and bevel gearing to the left-hand hind roll; differential locking pins are provided in the roll to aid mobility when on soft ground, steep gradients, operating the scarifier, or to overcome wheel spin.  The drive to the right-hand hind roll is through driving pins in the boss of the roll.
3. Two reversing cone clutches are incorporated in the gearbox.

MT required for transporting: -

• SMT, 20 ton, Low loading trailer or similar.

This item of equipment appears to have been added to the 2nd Edition by the issue of AL8.

Gear ratios: High - 57.1 to 1, Low - 130.43 to 1

Roller (with Scarifier) - 20,048 lb

Roller (with Scarifier and water ballast) - 20,548 lb (approx)

Engine - 530 lb

Speeds

• Rolling speeds (1,500 rpm) - Low 1.8 mph,
• Finishing  speed  (1,500 rpm)- Low - 1.8 mph
• Travelling  speed (1,500 rpm) - High - 4.1 mph

• Overall length - 17 ft 4½ in
• Overall width - 6 ft 7 in
• Overall height - 9 ft 5 in
• Wheelbase - 8 ft 3 in
• Ground Clearance - 11 in
• Turning radius - 18 ft
• Front rolls - 3 ft 8 in diameter x 3 ft 2 in wide
• Hind rolls - 4 ft 5 in diameter x 1 ft 8 in wide
• Overlap - 4 in each side

Wallis-Steevens Roller, 2½ tons, Type OG later OG/C

1. The Wallis Steevens 21 ton roller, Type OG/C, is a diesel-engined machine designed primarily for path work, patching, and the lighter types of consolidation work generally.  The rims of the hind rolls are reversible, giving rolling widths of 3 ft. 3½ in. and 3 ft. 10 in.

2. The engine is a two-cylinder, four-stroke unit developing 15 bhp at 2,000 rpm, but governed to a speed of 1,500 rpm when fitted to this roller.  An electric starter motor is fitted and side starting gear with a detachable handle is installed for hand cranking.  To assist starting in very cold weather, oil primers are provided for each cylinder.

3. Four normal speeds, forward and reverse, with a maximum speed of approximately 6 mph are available and the differential can be locked to minimise wheelspin on soft surfaces, severe gradients and when scarifying.  Brakes of the external contracting band type operate on both hind rolls.  Most of the controls are similar in layout and operation to those of a normal mechanical transport vehicle, but starting, reversals of direction, and stopping are carried out by means of an additional hand lever which operates two reversing clog clutches in the transmission.

4. A two-tine scarifier is fitted forward of the left-hand hind roll.  Other equipment includes water sprayers for each roll, for use when working on asphalt, tarmacadam, etc, and an awning top and curtains.  On relatively light rollers of this type, provision is not made for water ballasting.

MT required for transporting: -

• Plant transporter

This item of equipment appears to have been added to the 2nd Edition by the issue of AL43.

Gear ratios: High - 57.1 to 1, Low - 130.43 to 1

Main gearbox - Morris-Commercial, four speed and reverse selective sliding mesh type (five speeds available in both directions)

Reversing gear - Bevel pinion from gearbox mainshaft to reversing bevel wheels on reversing clutch shaft, engaged by dog clutches

Differential gear - Spur gears from reversing shaft to two-pinion differential. Differential locking pin operated from right-hand side of roller

Final drive - Spur pinions from differential wheels to spur rings on both hind rolls

Rear axle - Straight-through type

     Gear ratios       

 Front rolls - Two x Two-piece type with steel plate rim riveted to centre; 33 in. o/d. by 24 in. total width                     

Rear rolls - Two x Two-piece type with reversible steel plate rim bolted to centre; 36 in. o/d. by 13½ in. wide              

Brakes                        

• Pedal-operated - External contracting band type, operating on each hind roll

• Hand control - Hand-operated screw, actuating lever on common brake shaft               

Steering - Worm and segment, controlled by handwheel

Additional Equipment                                 

Scarifier - Two-tine, operated by worm and segment; mounted on left-hand side of roller                       

Water sprayers and supply - Tank mounted at rear of roller; gravity feed; spray pipe tank assemblies to all rolls, with separate cocks                

Hind roll scrapers - One front and one rear, adjustable                

Front roll scrapers - One front and one rear, adjustable                

Awning - Wood-lined awning top; front, rear, and two side curtains attached by hooks

Road Speeds

• 1st -  1 mph,
• 2nd - 1.75 mph
• 3rd - 3.33 mph
• 4th - 5.5 mph
• Reverse - 0.75 mph

Engine - 591 lb

• Overall length (including spraying water tank) - 10 ft 10 in
• Overall length (without tank) - 9 ft 9 in
• Overall width (including spraying water tank) - 4 ft 4¾ in
• Overall width (without tank) - 3 ft 10 in
• Overall height (including awning) - 6 ft 9 in
• Overall height (without awning) - 5 ft 3¼ in
• Wheelbase - 6 ft 0-5/16 in
• Turning radius - 9 ft 3 in

Marshall 12/15 ton roller, Type RD

1. The 12/15 ton Marshall roller of this type is a heavy roller powered by a Lister diesel engine, Type 27/3, which is mounted in the front of the machine; provisio1 is made for approximately 3A tons of water ballast.

2. A differential locking lever is provided in the cab for use when on soft ground, for lolling steep gradients, operating the scarifier, or to overcome wheel spin.  Two cone clutches are fitted one for forward movement and the other for reverse.  Gear changes should not be made whilst the roller is in motion.

3. The scarifier is fitted behind the rear rolls.

MT required for transporting: -

• SMT, 20 ton, Low loading trailer or similar.

This item of equipment appears to have been added to the 2nd Edition by the issue of AL48.

Gear ratios: Forward and Reverse -

• High -55.3 to 1,
• Intermediate - 104 to 1
• Low - 148.1 to 1

Speeds at 1,200 rpm

• Rolling speed (1st Gear) - 1.5 mph,
• Rolling speed (2nd Gear) - 2 mph,
• Finishing  speed  (3rd Gear)- 4 mph
• Travelling  speed (3rd Gear) - 4 mph

Roller (with Scarifier) - 23,520 lb

Roller (with Scarifier and water ballast) - 24,640 lb (approx)

Engine - 2,261 lb

• Overall length - 17 ft 3 in (18 ft 3 in with Scarifier)
• Overall width - 6 ft 7 in (7 ft 4 in with Scarifier)
• Overall height - 9 ft 2 in
• Wheelbase - 10 ft 7½ in
• Ground Clearance - 13 in (7½ in with Scarifier)
• Turning radius - 21 ft 8½ in
• Front rolls - 3 ft 9 in diameter x 4 ft 0 in wide
• Hind rolls - 5 ft 0 in diameter x 1 ft 8 in wide
• Overlap - 4 in each side

Huber 8/10 ton roller (gasoline engine)

1. The road roller described here is of the three-roll type and weighs approximately 10 tons with all equipment.  It is powered by a six-cylinder gasoline engine and has three forward and three reverse speeds.  The drive is transmitted through a lever-operated engine clutch, three-speed transmission gears (selected by two gear-change levers) and lever-operated forward-and- reverse clutches to spur rings on the hind rolls.  The engine clutch and transmission are mounted as a unit in a welded steel frame consisting of side and cross-members, operator's platform and engine front support.

2. The brakes are of the external contracting-band type and operate on the hind rolls.  The differential can be locked to overcome wheel spin on soft surfaces and gradients and spikes can be fitted to the hind rolls (after removing plugs) to assist if difficulty is found in ascending steep hills.  Tow hooks are bolted on the front of the frame for towing the roller or to pull other equipment.

MT required for transporting: -

• Plant Transporter

This item of equipment appears to have been added to the 2nd Edition by the issue of AL49.

Running gear -  Rolls - 1 front (split); 2 rear

Clutch, engine - Twin disc, lever-operated

Transmission - 3-speed, through lever-operated forward and reverse clutches to spur pinions and spur rings on hind rolls

• High -3.8 mph
• Intermediate - 3 mph
• Low - 1.5 mph

• Overall length - 18 ft 3 in
• Overall width - 6 ft 5 in
• Overall height - 6 ft 9 in
• Ground Clearance - 18 in

Huber 8/10 ton roller (diesel engine)

1. Except that it is powered by a diesel engine this roller is generally, the same as the Huber 8/10 ton roller described above.  It is of the three-roll type, weighing approximately 10 tons with all equipment, and providing three forward and three reverse speeds through lever-operated transmission gears and forward-and-reverse clutches.

2. The main engine is a four cylinder diesel unit and starting is by a twin cylinder gasoline engine mounted at the rear of the main engine.  The drive to the diesel engine flywheel gear is by a single-plate clutch and helical gears, the clutch being engaged by a hand lever and thrown out by centrifugal force when the main engine fires.

MT required for transporting: -

• Plant Transporter

This item of equipment appears to have been added to the 2nd Edition by the issue of AL49.

Starting - Caterpillar, 2-cylinder, petrol.

Running gear -  Rolls - 1 front (split); 2 rear

Clutch, engine - Twin disc, lever-operated

Transmission - 3-speed, through lever-operated forward and reverse clutches to spur pinions and spur rings on hind rolls

• High -3.8 mph
• Intermediate - 3 mph
• Low - 1.5 mph

• Overall length - 18 ft 3 in
• Overall width - 6 ft 5 in
• Overall height - 6 ft 9 in
• Ground Clearance - 18 in

Aveling-Barford 10/12 ton roller,  Model GDR

1. This is a three-roll type of medium heavy roller. The normal weight without ballast is 10 tons and and this can be increased to 12 ton by the addition of water ballast; water ballast is carried in the rolls.

2. A sliding weight, fitted within the main frame channel members, can be moved along the frame to vary the pressure of the rolls on the road surface.

3. Power is transmitted from the engine to the hind rolls through a clutch and a reduction gearbox. T he clutch provides forward or reverse drives, and the gearbox incorporates a differential which can be locked to form a fixed drive.

4. A two tine scarifier is fitted behind the R H hind roll and tanks are fitted on both sides of the roller frame to supply water to a sprinkler system.

MT required for transporting: -

• SMT, 20 ton trailer

This item of equipment appears to have been added to the 2nd Edition by the issue of AL65.

• 1st -1 mph
• 2nd - 1.6 mph
• 3rd - 3.3 mph
• 4th - 5 mph

Turning circle - 32 ft

Rolling width - 6 ft 2 in

Weights with water ballast

Weight on front rolls

• Sliding weight at front - 4 ton 1¾ cwt

• Sliding weight at rear - 3 tons 16 cwt

Weight on rear rolls

• Sliding weight at front - 8 tons 8¼ cwt

• Sliding weight at rear - 8 tons 14 cwt

Weights without water ballast

Weight on front rolls

• Sliding weight at front - 3 ton 12½ cwt

• Sliding weight at rear - 3 tons 7¼ cwt

Weight on rear rolls

• Sliding weight at front - 7 tons 8 cwt

• Sliding weight at rear - 7 tons 13¼ cwt

Scarifier

• Lift above ground - 8 in

• Width of cut - 9in.

• Overall length - 18 ft 0 in
• Overall width - 6 ft 6 in
• Overall height - 10 ft 3 in
• Width outside of rear rolls - 6 ft.6 in.
• Distance between rear rolls - 2 ft. 6 in.
• Width of front rolls - 2 ft 10 in
• Wheelbase - 10 ft. 9 in.
• Ground Clearance (scarifier tines) - 8 in.
• Ground Clearance (Machine frame) - 10 in.

Weight (without water ballast and with empty sprinkler tanks) - 10 ton  11 cwt.

Aveling-Barford 8/10 ton roller,  Model GC (MOS)

1. This is a three-roll type of medium heavy roller. The normal weight without ballast is 8 tons and and this can be increased to 10 ton by the addition of water ballast; water ballast is carried in the rolls.

2. A sliding weight, fitted within the main frame channel members, can be moved along the frame to vary the pressure of the rolls on the road surface.

3. Power is transmitted from the engine to the hind rolls through a clutch and a reduction gearbox. T he clutch provides forward or reverse drives, and the gearbox incorporates a differential which can be locked to form a fixed drive.

4. A two tine scarifier is fitted behind the R H hind roll and tanks are fitted on both sides of the roller frame to supply water to a sprinkler system.

MT required for transporting: -

• SMT, 20 ton trailer

This item of equipment appears to have been added to the 2nd Edition by the issue of AL65, updated to AL81.

• 1st -1.125 mph
• 2nd - 1.5 mph
• 3rd - 2.875 mph
• 4th - 5 mph

Turning circle - 32 ft

Rolling width - 5 ft

Scarifier

• Lift above ground - 7.5 in

• Width of cut - 9 in.

Roller loading details

Sliding weight at rear

Sliding weight at rear

• Overall length - 16 ft 0 in
• Overall width - 5 ft 6 in
• Overall height - 9 ft 9 in
• Width outside of rear rolls - 5 ft.6 in.
• Distance between rear rolls - 2 ft. 0 in.
• Width of front rolls - 2 ft 7 in
• Wheelbase - 9 ft. 0 in.
• Ground Clearance (scarifier tines) - 7.5 in.
• Ground Clearance (Machine frame) - 9.25 in.

Weight (without water ballast and with empty sprinkler tanks) - 8 ton  10 cwt.

Aveling-Barford 8/10 ton roller, Model GC (MOS) with canopy

1. This is a three roll type of medium heavy roller weighing 8 tons without ballast; the weight can be increased to 10 tons by the addition of water ballast which is carried in the rolls

2. The pressure of the rolls on the road surface can be varied by adjusting the positon of a sliding weight fitted within the main frame channel members.

3. Power is transmitted from the engine to the hind rolls through a clutch and a reduction gearbox. The clutch provides forward or reverse drives, and the gearbox incorporates a differential which can be locked to form a fixed drive.

4. A two tine scarifier is fitted behind the RH roll, and tanks are fitted on both sides of the roller frame to supply water to a sprinkler system.

Stores Ref - 89B/13

MT required for transporting: -

• SMT, 20 ton trailer

This item of equipment appears to have been added to the 2nd Edition by the issue of AL81.

• 1st -1.125 mph
• 2nd - 1.5 mph
• 3rd - 2.875 mph
• 4th - 5 mph

Turning circle - 32 ft

Rolling width - 5 ft

Scarifier

• Lift above ground - 7.5 in

• Width of cut - 9 in.

Roller loading details

Sliding weight at rear

Sliding weight at rear

• Overall length - 16 ft 0 in
• Overall width - 5 ft 6 in
• Overall height - 9 ft 1 in

Weight (without water ballast and with empty sprinkler tanks) - 8 ton  8½ cwt.

Green 'Unirol', 11 cwt, motor roller (hand guided)

1. The 'Unirol' is a hand-guided roller driven by a small air-cooled petrol engine.  The roll is in two sections, to facilitate steering, and both sections are driven through a bevel type differential gear.

2. The drive from the engine is transmitted through a flexible coupling to a gearbox, and then by a roller chain to the roll.  The gears are controlled by a double-handled clutch lever which operates two cone clutches to select forward or reverse travelling; the clutch lever operates on the dead rnan's. handle' principle, so that the roller stops when pressure on the lever is released.

3. A brake, fitted to the final chain drive sprocket, is operated by a Bowden cable from a lever fitted to the underside of the handle bar; the lever is fitted with a catch to hold the brake on for parking.

Stores Ref - 89B/49

MT required for transporting: -

• Tipper truck

This item of equipment appears to have been added to the 2nd Edition by the issue of AL85.

• Overall length with handles - 7 ft 6 in
• Overall length without handles - 3 ft 7 in
• Overall width - 3 ft 0 in
• Overall height - 4 ft 7 in

Weight (sprinkler tank empty and fuel tank empty) - 11 cwt

Aveling-Barford 2½ ton road roller, Model GFX

1. The model GFX road roller is a three roil type of roller designed for light consolidation work.  A canopy is fitted over the driver's seat, and the machine is equipped with a sprinkler tank with sprayers operating on all three rolls.

2. Water ballasting can be used in all three rolls to increase the weight.  The hind rolls are fitted with Girling brakes which are operated by a foot pedal; a hand lever is interconnected with the foot pedal to enable the brakes to be used for parking.

3. A two-speed gearbox provides high or low gear, and a clutch, operated by a hand lever, selects either forward or reverse drives.  Power is transmitted from the Petters diesel engine by a propeller shaft and flexible couplings to the gearbox, then by a worm shaft to the rear axle.  The rear axle incorporates a differential which can be locked to form a fixed drive when conditions are likely to cause roll spin.

Stores Ref - 89B/38

MT required for transporting: -

• SMT, 20 ton trailer

This item of equipment appears to have been added to the 2nd Edition by the issue of AL81.

Type - Three rolls

Equipment - Driver's canopy, and sprinkler tank

Travelling Speed

• High - 4.12 mph

• Low - 2 mph.

Turning circle (dia) - 22 ft. 6 in.

Rolling width - 3 ft. 9 in.

Water ballast - 2 cwt. (approx.) each roll

Roller Loading

Dimensions

Width of front roll - 2 ft. 4 in.

Width of rear roll - 1 ft. 1 in. (each)

Wheelbase - 6 ft. 7½ in

Overall length - 10 ft. 2 in.

Overall width - 4 ft. 0 in.

Overall height (with canopy) - 7 ft. 6 in.

Height without canopy - 5 ft. 6 in.

Weight

Total weight (unballasted, with all tanks and radiator empty) - 2 tons 6¼ cwt.

Aveling-Barford 6/8 ton tandem roller, Model TRV

1. The model TRV is a medium, two roll type of roller in which the rolls are mounted in tandem with the driving roll at the front. The rear roll is a guiding roll which is controlled by a fully hydraulic powered steering.

2. Water ballasting can be used in both rolls to increase the rolling weight, and a sprinkler tank is provided with sprayers to operate on both rolls.

3. Forward or reverse drives can be selected by means of clutches operated by a hand lever; a two-speed gearbox provides high or low speeds in either direction.

4. A canopy with canvas side screens is fitted above the driving seat.

Stores Ref - 89B/32

MT required for transporting: -

• 10 ton drop frame trailer or other suitable vehicle

  Note - Care must be taken to ensure that the load is distributed on sleepers where the vehicle floor is not suitable for knife edge loading.

This item of equipment appears to have been added to the 2nd Edition by the issue of AL85.

Travelling Speed

• High - 5.10 mph

• Low - 2.55 mph.

Turning circle (dia) - 36 ft. 0 in.

Rolling width - 4 ft. 4 in.

Roller Loading

Dimensions

Width of front roll - 4 ft. 4 in.

Width of rear roll - 4 ft. 4 in.

Wheelbase (centre of rolls) - 10 ft. 0 in

Overall length - 14 ft. 6 in.

Overall width - 5 ft. 0 in.

Overall height (with canopy) - 10 ft. 9 in.

Height (without canopy) - 7 ft. 9 in.

Stothert & Pitt, 32 in Tandem Vibrating Roller, Model V32R

1. The model V.32R vibrating roller is a light, power-driven roller, in which two rolls are arranged in tandem. The rear roll is fitted with a vibrator which can be engaged to increase the degree of compaction by creating a vibratory tamping action on the rear roll.  When the vibrator is not required, the roller can be used as a conventional type of roller.

2. The roller is powered by a single cylinder, four-stroke, air-cooled gasoline engine, which drives the rear roll through a flexible coupling, gearbox and final chain drive; the gearbox provides two forward and two reverse speeds.  The vibrator is driven from the engine through a clutch and a belt final drive.

3. A parking brake is provided on the front roll, and is controlled by Bowden cable from the handbrake lever, situated below the steering wheel.  A water sprinkler system is provided for both rolls, and a water tank is situated over the steering column to supply the system; a three-way cock controls the water supply to the sprinklers for either or both rolls.

Stores Ref - 89B/81

MT required for transporting: -

• 5 ton tipper

This item of equipment appears to have been added to the 2nd Edition by the issue of AL93.

Make and model - Stothert & Pitt, Model V 32R

Type - 32 in, power-propelled

Rolls - Two, in tandem

Operating speeds

• High - 1.77 mph forward and reverse

• Low - 0.85 mph forward and reverse

Dead weight on front roll - 5 cwt.

Dead weight on rear roll - 12¾ cwt

Turning circle - 24 ft. dia.

Rolling width - 32 in

Dimensions

• Overall width - 3 ft. 4-3/8 in.

• Overall height - 4 ft. 5-3/8 in.

• Overall length - 8 ft. 0½ in.

• Wheelbase (centre of rolls) - 5 ft. 4½ in

Weight - 17¾ cwt

Sheepsfoot Rollers - General

1. The two types of sheepsfoot roller, described below may be towed by the Class 4 tractor and are used to consolidate and compact the fill.  The feet penetrate into the fill to a depth of about 6 in. and simulate the action of tramping sheep, from which the rollers take their name.
2. The sheepsfoot roller is the best type of machine for compacting fills on airfield runways and it has been found that the most satisfactory results are obtained when the roller is travelling at a speed of 2½ miles per hour.
3. It is generally stipulated that fills must be compacted in 6 in. layers and each layer is compacted when the sheepsfoot roller "walks out of the ground".  This means making trip after trip over the same area until the feet no longer penetrate.  In average fill these trips run from 6 to 11, depending on the weight used and on the type of soil and its moisture content.
4. The roller may be ballasted with water or sand but it should be noted that if it is ballasted with water, anti-frost precautions will have to be taken during frosty weather.
5. Two or three sheepsfoot rollers may be drawn behind the tractor.  If two are used they may be drawn side by side to cover a large area. If three are used the third roller can be drawn in a central position behind the two rollers.

Allen Sheepsfoot Roller

1. The Allen sheepsfoot roller is used to consolidate the fill, by the action of the feet on the roller penetrating and compacting the fill as the roller passes over it. The first time the roller passes over the area to be consolidated the feet will sink well in, but on each subsequent occasion the degree of penetration becomes progressively less, until finally the feet will "walk out of the ground".

This entry as been amended up to AL3, 2nd Edition.

• Width of rollers - 4 ft 0 in.
• Diameter of rollers (less feet) - 3 ft 6 in
• Diameter of rollers (including feet) - 4 ft 9 in
• Number of feet on each roller - 64
• Number of feet on ground at once per roller - 4
• Length of feet - 7 in
• Size of each tamping face (Pyramid foot)- 5 sq in
• Size of each tamping face (Club foot) - 12 sq in
• Type of frame construction - 6 x 2½ in channel
• Axle diameter - 2¾ in
• Overall length - 12 ft 8 in
• Overall width - 8 ft 8 in

• of roller
• on each foot
• per sq in on ground

Pyramid feet

• of roller
• on each foot
• per sq in on ground

• 6,372 lb
• 796 lb
• 66 lb

Pyramid feet

• 6,260 lb
• 782 lb
• 156 lb

• 10,360 lb
• 1,295 lb
• 108 lb

Pyramid feet

• 10,248 lb
• 1,281 lb
• 256 lb

Le Tourneau Sheepsfoot Roller

1. Like the Allen sheepsfoot roller, the Le Tourneau roller is designed to consolidate the fill, and the method of using both types of roller is the same. The Le Tourneau roller, however, is articulated to facilitate the compaction of undulating ground.

This entry as been amended up to AL3, 2nd Edition.

• Width of rolls - 4 ft 0 in.
• Diameter of rollers (less feet) - 3 ft 6 in
• Diameter of rollers (including feet) - 4 ft 10 in
• Number of feet on each roller - 88
• Length of each foot - 8 in
• Base of foot (at drum) - 5 in x 5 in
• Size of each tamping surface - 2¼ in x 2¼ in
• Area of foot face - 5-1/16 sq in
• Overall length - 14 ft 7 in
• Overall width -  9 ft 7 in
• Overall height - 4 ft 10 in

• Empty - 6,040 lb

• Loaded with water - 10,240 lb

• Loaded with saturated sand - 13,440 lb

Pullen pneumatic-tyred roller (10 ton)

1. The Pullen pneumatic-tyred roller is a piece of consolidation equipment which is towed hollow body mounted on nine wheels, four in the front by a tractor. The roller consists of a  and five at the rear. The wheels are mounted in pairs with the exception of the centre rear wheel. Each pair of wheels are mounted on a single axle which is pivoted at the centre and arranged in such a manner that the wheels oscillate, thus offsetting the unevenness of the ground The front draw-bar is adjustable in height so that it can be moved to suit a variety of towing vehicles.
2. To obtain the necessary weight for rolling, the hollow body is filled with ballast normally prefabricated steel planking but sand or water may be used

MT required for transporting: -

• Hands or Templewood 8 wheeled flat trailer

This item of equipment appears to have been added to the 2nd Edition by the issue of AL8.

• Capacity of body - 171.5 cu ft
• Running gear - 9 x pneumatic tyred wheel, four at the front and 5 at the rear. - 11.00 x 12
• Overall length - 15 ft 1½ in
• Overall width -  7 ft 0 in
• Overall height - 5 ft 3½ in
• Width between wheel centres - 1 ft 6 in
• Ground Clearance from bottom of body - 1 ft 0¾ in

• Empty - 2 tons 5 cwt

• Loaded with sand - 10 tons (approx)

• Loaded with water - 4 tons 9 cwt (approx)

Pullen pneumatic-tyred roller (20 ton)

1. The Pullen 20-ton pneumatic-tyred roller is a larger and heavier development of the Pullen roller above and is designed for the compaction of soil at greater depths than can normally be attained with the lighter roller.

2. The roller consists of a hollow body mounted on nine pneumatic-tyred wheels, four in the front and five at the rear. The wheels are mounted in pairs with the exception of the centre rear wheel.  Each pair of wheels is mounted on a single axle which is pivoted at the centre, and arranged in such a manner that the wheels oscillate, thus offsetting the unevenness of the ground and providing a kneading action to the material immediately under the tyres.  The draw-bar is adjustable in height so it can be moved up and down to suit a variety of towing vehicles.

3. To obtain the necessary weight for compaction, the hollow body is filled with ballast; a variety of materials can be used according to the weight required and their availability on the site.  The upper portion of the body is large enough to accommodate bundles of PSP tracking.

MT required for transporting: -

• Plant transporter

This item of equipment appears to have been added to the 2nd Edition by the issue of AL50.

• Capacity of body - 350 cu ft
• Running gear - 9 x pneumatic tyred wheel, four at the front and 5 at the rear. - 9.00 x 20
• Overall length - 19 ft 0 in (including draw-bar)
• Overall width -  7 ft 1 in
• Overall height - 6 ft 8 in
• Width between wheel centres - 1 ft 6 in
• Wheelbase - 10 ft 6 in
• Ground Clearance - 1 ft 2¾ in
• Rolling width - 6 ft 9 in
• Towing eye from ground - Adjustable from ground level to 4 ft 0 in

• Empty - 5 tons 8½ cwt

• Maximum weight of ballast - 16 tons

Onions 16/60 ton, Model 159 compaction roller, Mk 1

1. The Model 159 roller is a two wheeled pneumatic tyred roller which is towed by a tractor.  A detachable towbar, fitted with two wheels, is provided, and a yoke is fitted to each end of the body to enable towing to be carried out from either end; the towbar can be adapted to suit a variety of tractors including crawler types.

2. The roller is designed to serve a dual purpose

   1. For the compaction of sub-grade and base-course materials

   2. For proving tests on completed surfaces.

3. The body is divided into calibrated compartments to contain ballast, and each compartment is fitted with emptying doors and drain plugs.  Either loose ballast or metal kentledge can be used to load the roller, and a measuring box is provided for checking the density of loose ballast.

4. Four jacking columns are fitted, located at each corner of the body, to support the machine when it is not connected to a towing vehicle, and to take the full weight of the machine when it is parked.  Two hydraulic jacks are provided to raise the roller when setting the jacking columns to take the load off the tyres.

5. The top of the body is open for loading the ballast compartments, but a detachable canopy is fitted over the centre part to protect the tyres from the effects of the sun when the roller is being used in tropical climates.

MT required for transporting: -

• 30 ton drop frame trailer

This item of equipment appears to have been added to the 2nd Edition by the issue of AL90.

Operating speed - 3 mph.

Maximum permissible speed - 5 mph.

Roller track - 5 ft. 7 in

Minimum turning circle (dia.) - 90 ft.

Minimum weight (empty) - 15 tons 17 cwt

Maximum weight (full ballast) - 54 tons

Dimensions

• Total length, working order (with 2 swan-necks and towbar) - 47 ft. 4 in

• Length with swan-necks and tow-bar removed - 26 ft. 11 in.

• Width   - 9 ft. 6 in.

• Height - 8 ft. 4 in

Total weight (empty) - 15 tons 17 cwt.

Johnson, Benjo No 2, Power Rammer

1. The purpose of the power rammer is to compact the soil or other material that is used when making  or repairing roads, filling trenches consolidating the foundations of buildings and similar classes of work particularly where it is uneconomical or impracticable to use large and bulky tamping equipment.
2. The machine which is controlled manually by the operator, is provided with its own fuel container and is a self contained unit that does not have to be connected to an external supply of power.  The tamping force is obtained from the explosion of a mixture of gasoline vapour and air in a cylinder.  The cylinder, like that of an internal combustion engine, is provided with a piston, inlet valve, exhaust ports, and a sparking plug; but, unlike the conventional engine, the piston is connected by a rod to the tamping foot of the machine instead of to a crank pin.   The explosion in the cylinder drives the piston downwards, which in turn drives the rod and consequently the tamping foot against the material to be compacted and also causes the machine to jump upwards.  In this way a succession of blows - at a rate of approximately 45 to 50 a minute - are applied to the material to be compacted, the force of the blows depending on the nature of the material and the resistance it offers to the tamping foot of the machine.

3. Machines supplied under early contracts were known as Johnson Power Rammers, Benjo Series 2 (gasoline operated) and were manufactured by B. Johnson & Son, Ilkley, Yorkshire.  Later machines have been manufactured by Messrs. Warsop Power Tools Ltd., who are now the sole manufacturers.  Machines of both makes are identical, except for the maker's name, and all information in this leaflet applies to machines supplied by. either manufacturer. (AL78)

This item of equipment appears to have been added to the 2nd Edition by the issue of AL4 and as been amended to AL78.

Later re-titled - Benjo power rammer (Warsop or Johnson), Series 2, gasoline operated. (AL78)

Johnson, Benjo No 2, air-cooled, petrol:  Capacity - 15 cu in.

Area of tamping face - 68 sq in

Diameter of tamping face - 9½ in

• Overall Length - 4 ft 3 in.
• Overall width -  2 ft 0 in (across handles)
• Overall width -  11 in (at right angles to handles)

Trolley

• Overall Height - 4 ft 0 in.
• Overall width -  2 ft 6 in
• Diameter of wheels -  1 ft 4 in

• Power rammer (dry) - 235 lb

• Power rammer (including oil and fuel) - 240 lb

• Power rammer trolley - 75 lb (approx)