Nunn 18 kW Generating Set

The portable generator illustrated above comprises an I8 kW. mobile alternator, driven by a 30 hp Ford V8 cylinder petrol engine.  The complete unit is carried on a totally enclosed trailer with a waterproof cowling, mounted on two pneumatic tyred wheels and overslung springs and fitted with automatic over run brake and hand brake.

The unit has a wide range of application for isolated work where electric power is required.

When the unit is standing, the weight must be taken off the tyres by means of the four retractable screw jack legstands and the machine levelled up before running is commenced.

The power load should be distributed as equally as possible over the 3 phases, with not more than 2 kW out of balance.

The complete unit can be towed for considerable distances, at speeds not exceeding 30 mph.  After transportation a check should be made of the switch panel mounting to ensure that no movement has taken place.

Weight - 1 ton 12 cwt.

Overall dimensions: -

• Length - 9 ft. 8 in.

• Width - 7 ft. 0 in.

• Height - 5 ft. 3 in.

Rating - 18 kW, 225 kVA,  0.8 PF, 400 volts, 3-phase, 4 wire, 50 cycles, 1,500 rpm.

Fuel consumption - 3 gall. per hour at full load.

Liner Portable Saw Bench, 26 in

The portable saw bench is illustrated above and consists of a 26 in. diameter saw, giving a normal depth of cut of 7 in. to 9 in. according to the quality of timber.  The table is of machined cast iron, with loose insert to facilitate removal of saw.  The power unit is a 6 hp single cylinder air-cooled JAP engine.  A boring attachment is fitted to take drills up to ½ in shank.  The complete unit is fitted on a steel frame mounted on four steel wheels with drawbar.

This item of equipment was transferred to Part 13, Section 1 in the 2nd Edition.

The saw bench can be used for the following operations - cross-cutting, bevelling, ripping and boring.

It is imperative that the saw guard is in the correct position over the saw before starting the engine.

Weight - 11¼ cwts.

Size of table - 4 ft. 0 in. x 1 ft. 8 in.

Overall dimensions: -

• Length - 6 ft 2 in

• Width - 4 ft. 0 in

• Height - 4 ft. 2½ in.

Fuel consumption ½ gallon per hour

British Steel Piling 50 ft pile driving plant with 30 cwt drop hammer/BSP Co Ltd, light type pile driving plant, 50 ft derrick, 30 cwt drop hammer.

1. The British Steel pile driving plant is operated through a Zenith winch, powered by a Lister diesel engine, Type Model CE 14 (later CE 16). The plant has four twin-flanged travelling wheels and, when in use, is usually mounted on rails; the frame base channels are upturned to facilitate skidding the frame, if necessary.

2. The winch is used when erecting the derrick, or operating the pile driver or crane; a travelling rope can be wound on to the warping drum to provide means by which the plant can be moved along the rails.

MT required for transportation -

• Plant transporter

This item of equipment appears to have been added to the 2nd Edition by the issue of AL36 and is amended up to AL52.

Lister, Model CE 14, 2-cylinder, water-cooled, Diesel engine:  Capacity - 139 cu in:  BHP - 14 at 1,000 rpm (up to AL52)

Lister, Model CE 16, 2-cylinder, water-cooled, Diesel engine:  Capacity - 139 cu in:  BHP - 16 at 1,200 rpm (from AL52)

Running gear - Twin-flanged, cast-iron wheels, swivelling

Frame - 50 ft

Clutch - Single plate, hand operated

Controls - Manual

Winch - Zenith, double drum, 30/40 cwt

Reduction gear - Lister: ratio 2 to 1

Weight of drop hammer - 30 cwt

Single Sheave block - Max load 2½ tons

Winch, double drum - Max load, 2 tons each drum singly

Drum capacity - Approx 530 ft of 2 in circumference rope in 4 layers or 300 ft of 2¼ in circumference rope

Winch speed - 70-75 ft/min

Counterweight - 2 tons, if guy ropes are not used when operating plant.  4½ tons when erecting derrick.

Backward rake - 1 in 5 Max

Ropes

• Hammer rope - 2¼ in circumference x 160 ft

• Pile rope - 2¼ in circumference x 210 ft

• Travelling rope - 2 in circumference x 80 ft

• Guy ropes - 1¼ in circumference x 80 ft (4 off)

Weights

• Plant complete - 20,944 lb

• Frame only - 7,000 lb

• Base (without travelling wheels) - 2,688 lb

• Timber decking - 392 lb

• Head sheaves - 224 lb

• Lifting sheaves - 114 lb

• Travelling wheels - 616 lb

• Raking gear, complete - 672 lb

• Winch and engine - 5,040 lb

• Ropes and pile block - 448 lb

• Drop hammer - 3,360 lb

Overall dimensions: -

• Length - 10 ft 3 in

• Width - 14 ft. 11½ in with counterweight channels stowed, 16 ft 11½ in with counterweight channels extended

• Height - 50 ft. 0 in.

• Track - 10 ft

• Width of wheels at base of flanges - 2-5/8 in (recommended rail head dimension - 2¼ in)

Pullen PBS laying machine

1. The Pullen P. B.S. laying machine is used to apply a liquid solvent to one side of the prefabricated bitumous sheeting with the object of effecting adhesion between layers, and to lay the material evenly on the ground.

2. The machine consists primarily of a two-wheeled pneumatic-tyred chassis capable of being towed by a prime-mover. Mounted on the chassis are: -

   1. A spring-mounted adjustable draw-bar.

   2. Six rollers which guide the PBS through the machine.

   3. A brush for removing dusting powder from the underside of the PBS.

   4. A large and a small tank each containing gasoline oil mixture.

   5. A canvas and felt covered wooden roller, the lower portion of which is immersed in the gasoline and oil mixture in the small tank.

   6. A pump chain driven from the shaft of the wooden roller. The chain carries mixture from the large tank to the small tank, thus keeping the latter topped-up.

   7. An articulated roller.

   8. A roller to carry a single roll of PBS for patching purposes

   9. A stanchion adjustable in height to hold the machine horizontal when not in use

   10. Tool box.

MT required for transportation -

• Tender, 4x4, Bedford QL

• Tender, 6x4, Crossley IGL

• Tender, 4x2, Bedford OY

• Tender, 4x2, Bedford OWL

This item of equipment appears to have been added to the 2nd Edition by the issue of AL36.

Tyres - 10.50 x 16

Draw-bar - Standard military type (1¾ in. hole)

Draw-bar springs - 5 in. long x 17 in. inside dia. x 3/8 in. dia. steel

Draw-bar heights (adjustable) - 2ft. 8 in.; 2ft.5 in.; 2ft.2in.; 1 ft. 11 in.; 1 ft. 8 in.

Capacity of tanks (total) - 150 gall.

Capacity of tanks (working) - 100 to 120 gall.

Weights

• Vehicle (nett) - 1 ton 8½ cwt

• Vehicle with liquid - 2 tons 12 cwt (approx)

• Loose axle with tyres - 5½ cwt

Overall dimensions: -

• Length (roller down) - 12 ft. 3 in.

• Length (roller up) - 9 ft. 9 in.

• Width - 6 ft. 7½ in.

• Height (roller up) - 5 ft. 6 in.

• Track - 5 ft 9 in

Woodborer, pneumatic reversible, Model 315-RW-750

1. The Model 315-RW-750 reversible pneumatic woodborer consists primarily of a rotary air motor designed to operate on compressed air ranging from 70 to 100 lb per sq. in (recommended operating pressure 80 to 90 lb per sq. in).  Four vanes rotate on a spindle and operation is obtained by an even distribution of compressed air upon the vanes.  The motor drives a chuck through the medium of a train of gears.  A governor is incorporated in the machine to prevent it from racing on light speed.  The machine is operated by a side throttle handle combining both forward and reverse speed control.  The tool is used for the speedy boring of bolt and spike holes in wood.

This item of equipment appears to have been added to the 2nd Edition by the issue of AL45 (moved to Part 13, Section 3 - AL71)

Free speed - 750 rpm

Chuck - Woodbit chuck to take ½ in parallel shank wood augers.

Weight - 15 lb

Overall dimensions: -

• Length - 14½ in.

• Spindle offset - 1-3/8 in.

Air Consumption - 40 - 45 cu ft of free air per minute at 100 lb/sq in pressure.

Trianco block making machine, Model G2

1. The Trianco model G.2 is a hand operated concrete block making machine with a power operated jolting attachment; the jolting attachment is driven by an electric motor from a 240 volt AC mains supply.

2. The machine is suitable for making solid or hollow concrete blocks up to the maximum dimensions of length 18 inches, width 9 inches and height 9 inches.

3. Moulds are provided to produce both hollow (two cavity) and solid blocks, with tongued and grooved end faces; these are the only moulds normally supplied with RAF machines.  When fitted with moulds of the appropriate shapes the machine can be used for producing cornice stones, gutters and a variety of different shaped blocks for building purposes.

4. The machine should be set upon a hard, level base.  Two wheels are fitted to the rear of the machine to facilitate moving the machine on site to the most appropriate position for feeding with aggregate, or to lessen the carrying distance for stacking finished products; a bogey trolley should he placed under the lower cross member when moving the machine on site.

MT required for transporting: -

• 3 ton truck

This item of equipment appears to have been added to the 2nd Edition by the issue of AL82

Type - Automatic jolting

Attachments

• Mould box for solid blocks

• Mould box for hollow blocks

Electrical equipment - Motor, 240 volt, AC, single phase

Subsidiary equipment

• Carrier for removing blocks.

• 1,000 pressed steel pallets for solid blocks.

• 600 pressed steel pallets for hollow blocks.

Output capacity - 120/130 solid blocks per hour or 70/80 hollow blocks per hour

Dimension of blocks

Solid type

• Nominal size  

  • Length -  18 in.

  • Height - 9 in

  • Thickness - 4½ in

• Actual size  

  • Length -  17-5/8 in.

  • Height - 8-5/8 in

  • Thickness - 4¼ in

Hollow type        

• Nominal size  

  • Length -  18 in.

  • Height - 9 in

  • Thickness - 9 in

• Actual size  

  • Length -  17-5/8 in.

  • Height - 8-5/8 in

  • Thickness - 8¾ in

Dimensions of machine          

Working order

• Width - 3 ft. 6 in

• Height - 4ft. 10 in

• Length - 5 ft. 9 in.

Crated

• Width - 3 ft. 10 in

• Height - 4ft. 11 in

• Length - 5 ft. 2 in

Dimensions of pallets (crated)                       

• 1,000 pallets for solid blocks             

  • Length - 3 ft. 2 in.

  • Breadth - 1 ft. 10 in

  • Height - 2 ft. 5 in

• 600 pallets of hollow blocks                  

  • .Length - 4 ft. 0 in.

  • Breadth - 1 ft. 10 in.

  • Height - 3 ft. 5 in.

Weights          

Nett (Actual)  

• Machine with mould - 1,624 lb

• 1,000 pallets, solid block - 2,600 lb

• 600 pallets, hollow block - 2,010 lb

Gross (Crated)

• Machine with mould - 1,988 lb

• 1,000 pallets, solid block - 2,844 lb

• 600 pallets, hollow block - 2,184 lb