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50 inch 'Bull' engine

50 inch "Bull" engine built by Harvey & Co., Hayle, Cornwall, in 1876-7 for the iron shaft at Severn Tunnel Pumping Station, Sudbrook, Monmouthshire

50 inch 'Bull' engine

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Main steam valve

Main steam valve

4 bolts of 9 nuts for fixing piston rod gland

4 bolts of 9 nuts for fixing piston rod gland

Fragments of wooden cylinder cleading

Fragments of wooden cylinder cleading

2 slippers for piston rod cap guides

2 slippers for piston rod cap guides

7 cast brackets (1 broken in eye) and 6 stanchions (1 with broken shank. All have top pins cut off) for gallery around cylinder. Note : Piece of curved handrail removed from this lot and put with other pieces found later, item 67

7 cast brackets and 6 stanchions

10 handrail stantions from stairs item 60 (some have tops broken off, one has broken foot); 13 similar stantions for horizontal rail on front of working floor (one broken) and one heavier corner stantion

Handrail stantions from stairs

Weigh post, left, with frame bolts & nuts and studs & nuts for arbor bearing

Weigh post

Beam forming cill of weigh frame

Beam forming cill of weigh frame

Column

Piston, complete with piston rod

Piston, complete with piston rod

Beam with gudgeon stool, links (complete) and loop for plug rod and air pump rod. The pin for the piston rod cap is not fitted

Beam with gudgeon stool

Guide frame for piston rod cap, right

Guide frame for piston rod cap, right

Eduction pipe - 2 pieces joined with spigot of faucet expansion joint

Eduction Pipe

Transom

Cataract loop and 2 guides for cataract rod

Cataract loop and 2 guides for cataract rod

Common joists for working floor with wooden bearing pieces.

Common joists for working floor with wooden bearing pieces

Bridging joist for working floor.

Bridging Joist for Working Floor

Spindle bracket & lever for blowing through valve

Spindle bracket & lever for blowing through valve

Beam to support guide frames item 7 & 8

Beam to support guide frames item 7 & 8

Guide frame for piston rod cap, left (as seen from front).

Guide Frame for Piston Rod Cap

Cylinder beam rear

Cylinder beam rear

3 swinging guides for rods (item 47) with 6 bearing pieces (1 broken & corner lost) and 5 rubber bumpers

3 swinging guides for rods

Bottom beam, rear (nearest towards pit).

Bottom beam, rear (nearest towards pit)

Bottom beam, front of engine furthest away from pit.

Bottom Beam

3 catches from plug frame

3 catches from plug frame

3 rods from weighshaft to valve spindles

3 rods from weighshaft to valve spindles

Feed pump with plunger & rod, complete with loop, brasses, gib & cotter; foot bracket (fits to 18). Suction clack with relief bypass, delivery clack, shut off cock and tee; lever and weight removed

Feed Pump

Stop for pump rod, comprising two halves to clamp around rod, and two pad plates, one with wooden pad and 5 bolts for the other

Stop for pump rod

Stay for parts 7 & 8 with nut & washer

Stay for parts 7 & 8 with nut & washer

4 cylinder holding down bolts with nuts & washers

4 cylinder holding down bolts with nuts & washers

Cast cleading plate for cylinder bottom

Cast cleading plate for cylinder bottom

Plug rod with tappets

Plug rod with tappets

Cylinder with nozzles and bottom cover (lacking gland)

Cylinder with nozzles and bottom cover

Condenser cistern with condenser and air pump complete with bucket, rod and cover

Condenser cistern with condenser and air pump complete with bucket

Staircase handrail with top bend and a length of plain handrail

Staircase Handrail for 50 inch "Bull" Engine

4 cast valve bonnets.

4 cast valve bonnets

Brass kerb to surround plug rod on working floor (2 pieces); cylinder lubricator; 1/2" screw down valve and trap; 6 pairs of brasses for arbors on plug frame (stamped inverted V for A,B,C,D,E,F); 3 ebonite plug cocks and a wooden back board for a gauge.

Brass Kerb to surround plug rod on working floor

Head of weigh frame, with gland for plug rod

Head of weigh frame, with gland for plug rod

Black museum box of approximately 31 screw-caps and associated parts (such as nuts and bolts). Parts of the 50 inch "Bull" engine built by Harvey and Company Limited, Hayle, Cornwall.

Brass Screw-Cap Grease Lubricators

1876-1877

8 cast treadplates for the gallery around the cylinder

8 cast treadplates for the gallery around the cylinder

Cylinder cover

Iron staircase (1 tread broken but piece present) with wooden boards held to back by iron straps and dog bolts (wood in poor condition)

Iron staircase

2 keepers each with two bolts & nuts for seaming column to bottom beams

Keepers, bolts and nuts

11 [checker?] rolled tread-plates for working floor, and a disc of plate to go under steam valve bonnet

11 checker? rolled tread-plates for working floor

Plug rod guide (bracket with gland) and packing plate

Plug rod guide

Cast side plates (3 long & 1 short) and 4 cast top plates for cleading the plinth around the cylinder

Cast side plates

Weigh post right with frame bolts and nuts and studs & nuts for arbor bearing

Weigh post right with frame bolts and nuts and studs

Common joists for working floor with wooden bearing pieces

Common joists for working floor with wooden bearing pieces

3 hanging rods with weights from arbors complete with clevis pins etc

3 hanging rods with weights

Column spindel with crank, loose crank, lever and push rod with two clevis pins for injection cock

Column spindel with crank

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