Cornish pumping engine

Bedplate from bob wall

Measurements:: overall: 180 mm x 1200 mm x 2960 mm,

Object Number:: 1954-178/1

type:: bedplate

2 Gudgeon Stools

2 gudgeon stools

Object Number:: 1954-178/2

type:: stools

2 new brasses for gudgeons

32 new brasses for gudgeons (made in Museum; require fitting to items 2)

Measurements:: overall: 270 mm x 275 mm x 130 mm,

Object Number:: 1954-178/3

type:: brasses

Working beam or bob

Working beam or bob; lacks pin for back links of parallel motion; otherwise complete.

Object Number:: 1954-178/4

type:: beam

Cylinder bottom

Measurements:: overall: 420 mm x 1360 mm x 1360 mm,

Object Number:: 1954-178/5

type:: cylinder

4 holding down bolts with nuts & washer

4 holding down bolts for item 5 with nuts & washers

Object Number:: 1954-178/6

type:: bolt

Steam cylinder

Object Number:: 1954-178/7

type:: cylinder

Cylinder cover

Cylinder cover with gland and packing and lubricator

Measurements:: overall: 590 mm 1320 mm,

Object Number:: 1954-178/8

type:: cylinder

Piston with rod, piston rod cap and piston rings

Piston with rod, piston rod cap and piston rings.

Object Number:: 1954-178/9

type:: piston

Pair of great links of parallel motion complete

Measurements:: overall: 320 mm x 1860 mm x 1120 mm,

Object Number:: 1954-178/10

type:: link

Back links of parallel motion complete

Measurements:: overall: 350 mm x 1500 mm x 620 mm,

Object Number:: 1954-178/11

type:: link

Pair of parallel bars of parallel motion

Pair of parallel bars of parallel motion, complete with brasses etc & 2 nuts each

Object Number:: 1954-178/12

type:: bar

Arbor with loop to which item 12

Arbor with loop to which item 12 (parallel motion) are secured.

Object Number:: 1954-178/13

type:: arbors

Pair of radius rods of the parallel motion

Object Number:: 1954-178/14

type:: radius rod

Arbor for Anchorage Point

Arbor for anchorage point of items 14 with pair of bolting brackets.

Measurements:: overall: 270 mm x 1875 mm x 410 mm,

Object Number:: 1954-178/15

type:: arbors

Top nozzle with valves and 2 of 3 bonnets

Top nozzle with valves and 2 of 3 bonnets (one missing) for stop valve steam inlet and equilibrium valve. Spindle of equilibrium valve is bent

Object Number:: 1954-178/16

type:: valve

Flanged elbow of short pipe section

Flanged elbow of short pipe section, possibly for steam inlet pipe

Object Number:: 1954-178/17

type:: pipe elbow

Perpendicular pipe with brasses for exhaust valve weigh shaft

Perpendicular pipe with brasses for exhaust valve weigh shaft, gland ring for joint in bottom nozzle, bottom nozzle & exhaust valve complete, all assembled together

Measurements:: overall: 990 mm x 3300 mm x 630 mm,

Object Number:: 1954-178/18

type:: valve

Upper part of eduction pipe

Upper part of eduction pipe with guides for plug rods complete with glands

Measurements:: overall: 640 mm x 2670 mm x 460 mm,

Object Number:: 1954-178/19

type:: education pipe

Lower end of eduction pipe and condenser body joined together

Lower end of eduction pipe and condenser body joined together (rust joint)

Measurements:: overall: 2500 mm x 1980 mm x 780 mm,

Object Number:: 1954-178/20

type:: condenser

Air Pump Body with Foot

Air pump body with foot (rust joint) and head (bolted joint)

Measurements:: overall: 2920 mm x 1420 mm x 1170 mm,

Object Number:: 1954-178/21

type:: air pump

Air pump bucket, rod, cap and pin and cover with gland complete

Measurements:: overall: 610 mm x 2630 mm x 610 mm,

Object Number:: 1954-178/22

type:: air pump

Air pump rod complete with brasses

Air pump rod complete with brasses, keeper, gib & cotter

Measurements:: overall: 80 mm x 6800 mm x 280 mm,

Object Number:: 1954-178/23

type:: air pump

Top part of pump spear with plates

Top part of pump spear with 2 hanging plates and 2 flitch plates

Measurements:: overall: 410 mm x 620 mm x 8200 mm,

Object Number:: 1954-178/24

type:: pump spear

Bearing block for pump spear and gib and cotter

Object Number:: 1954-178/25

type:: block

Sword (catch wings)

Object Number:: 1954-178/26

type:: sword

Pair of Plates to Carry Sword

Pair of plates to carry sword.

Object Number:: 1954-178/27

type:: plate

1 stay to sword with loop; cotter and nuts fitted

Measurements:: overall: 80 mm x 2235 mm x 350 mm,

Object Number:: 1954-178/28

type:: stay to sword

2 heavy stools

2 heavy stools; purpose unknown but perhaps to catch blocks

Object Number:: 1954-178/29

type:: stools

Cylinder false cover (cleading) ;in 2 parts

Cylinder false cover (cleading) ;in 2 parts, one part with mechanical lubricator fitted.

Measurements:: overall: 530 mm x 1200 mm x 110 mm,

Object Number:: 1954-178/30

type:: cylinder

Feed pump rod with brasses, keeper gib & cotter

Measurements:: overall: 70 mm x 6000 mm x 300 mm,

Object Number:: 1954-178/31

type:: pump

Feed pump complete with plunger and clevis

Feed pump complete with plunger and clevis, suction valve with relief valve and delivery valve. Clack of relief valve & rod to hold it down removed to item 64

Object Number:: 1954-178/32

type:: pump

Wrought iron pipe with elbow & flange

Wrought iron pipe with elbow & flange (2.5" nom) being suction line to feed pump.

Measurements:: overall: 210 mm x 260 mm x 1000 mm,

Materials:: wrought iron

Object Number:: 1954-178/33

type:: pipe

Galvanised tank that was used as the hot well

Object Number:: 1954-178/34

type:: tank

Injection valve body (for valve & rod see item 49)

Measurements:: overall: 620 mm x 300 mm x 500 mm,

Object Number:: 1954-178/35

type:: valve

Left weigh post with brasses for arbors

Left weigh post with brasses for arbors & pin for catches

Measurements:: overall: 90 mm x 3200 mm x 480 mm,

Object Number:: 1954-178/36

type:: post

Right hand weigh post

Right hand weigh post with brasses for arbors and two pins for catches with collars washers & pins

Measurements:: overall: 190 mm x 3200 mm x 480 mm,

Object Number:: 1954-178/37

type:: post

Head of weigh frame

Head of weigh frame with 2 glands for plug rod guides

Measurements:: overall: 390 mm x 1350 mm x 380 mm,

Object Number:: 1954-178/38

type:: frame

Weigh shaft with 3 levers and 4 pillars

Weigh shaft with 3 levers and 4 pillars (1 detached) and 2 other pillars to support the spindle guide.

Object Number:: 1954-178/39

type:: weigh shaft

3 Valve spindle loops (stop steam of equilibrium)

3 Valve spindle loops (stop steam of equilibrium), spindle guide for these (fits on pillars of item 39); exhaust valve spindle cap and lifting link, exhaust valve weighshaft with 2 levers and rod to exhaust valve arbor, 3 catches with weights

Object Number:: 1954-178/40

type:: valve

3 arbors with all levers, sectors etc in place

Object Number:: 1954-178/41

type:: arbors

Two Rods from Steam & Equilibrium Arbors

2 rods from steam & equilibrium arbors to levers on weighshaft

Measurements:: overall: 80 mm x 140 mm x 3160 mm, 25 kg

Object Number:: 1954-178/42

type:: arbors

Image ©: The Board of Trustees of the Science Museum

Three Hanging Rods for the Arbors

3 hanging rods for the arbors, 2 to attach to balance boxes item 44, and one with hook end

Measurements:: overall: 150 mm x 540 mm x 3930 mm, 45 kg

Object Number:: 1954-178/43

type:: rods

Image ©: The Board of Trustees of the Science Museum

2 balance boxes on beams with trunions

2 balance boxes on beams with trunions. (Beaming stools item 78; old iron from boxes amongst item 67)

Object Number:: 1954-178/44

type:: box - container

Rod from Exhaust Arbor

Rod from exhaust arbor to work injection valve

Measurements:: overall: 60 mm x 85 mm x 1330 mm, 5.5 kg

Object Number:: 1954-178/45

type:: rods

Image ©: The Board of Trustees of the Science Museum

Arbor with two levers to go below working floor for working injection valve

Arbor with two levers to go below working floor for working injection valve, with one bearing plate (of 2).

Object Number:: 1954-178/46

type:: arbors

Rod for Connecting Arbors

Rod to go from item 46 to item 48 (arbor to arbor)

Measurements:: overall: 70 mm x 85 mm x 3365 mm, 13 kg

Object Number:: 1954-178/47

type:: rods

Image ©: The Board of Trustees of the Science Museum

Arbor with 2 levers to straddle condenser cistern

Arbor with 2 levers to straddle condenser cistern, with two plummer blocks

Measurements:: overall: 25 mm x 2290 mm x 235 mm,

Object Number:: 1954-178/48

type:: arbors

Injection valve on rod

Object Number:: 1954-178/49

type:: valve

Steam and exhaust cataract complete

Object Number:: 1954-178/50

type:: steam and exhaust cataract

Improvised cock spanner to control steam exhaust

Improvised cock spanner to control steam exhaust cataract being an iron pipe with end squared and a lever pinned on complete with bearing plate

Measurements:: overall: 105 mm x 1850 mm x 415 mm,

Object Number:: 1954-178/51

type:: spanner

Steam and Exhaust Cataract Rod

Steam and exhaust cataract rod (forked lower end with elongated loops)

Measurements:: overall: 45 mm x 50 mm x 2360 mm, 5.5 kg

Object Number:: 1954-178/52

type:: cataract rod

Image ©: The Board of Trustees of the Science Museum

Steam and Exhaust Cataract Loop

Steam and exhaust cataract loop and two guides for loops and rod (bushes loose)

Measurements:: overall: 70 mm x 760 mm x 280 mm, 8 kg

Object Number:: 1954-178/53

type:: cataract loop

Image ©: The Board of Trustees of the Science Museum

Equilibrium cataract complete

Equilibrium cataract complete, with drop link to item 55

Object Number:: 1954-178/54

type:: equilibrium cataract

Lever on arbor on pair of light stools

Lever on arbor on pair of light stools, used for resetting equilibrium cataract

Measurements:: overall: 530 mm x 275 mm x 1220 mm,

Object Number:: 1954-178/55

type:: stools

Control Rod for Equilibrium Cataract

Control rod for equilibrium cataract in two lengths - lower cranked with 2 nuts, upper with lantern screw, hand knob and bracket

Measurements:: overall: 200 mm x 400 mm x 1700 mm, 7.5 kg

Object Number:: 1954-178/56

type:: control rod

Image ©: The Board of Trustees of the Science Museum

Equilibrium Cataract Rod with Roller Head and Guide

Equilibrium cataract rod with roller head and guide

Measurements:: overall: 210 mm x 390 mm x 2750 mm, 6 kg

Object Number:: 1954-178/57

type:: cataract rod

Image ©: The Board of Trustees of the Science Museum

Spindle for Stop Valve

Spindle for stop valve, with handwheel, bearing pillar, forked end with clevis screwed on, bevel wheel & lever for automatic regulating gear

Measurements:: overall: 260 mm x 480 mm x 2860 mm, 23.5 kg

Object Number:: 1954-178/58

type:: valve

Image ©: The Board of Trustees of the Science Museum

Light Rod with Ball Weight

Light rod with ball weight for engaging automatic regulating gear

Measurements:: overall: 40 mm x 40 mm x 1900 mm, 1.5 kg

Object Number:: 1954-178/59

type:: weights

Image ©: The Board of Trustees of the Science Museum

"St. Austell Govenor" comprising arbor with double gathering pallet striking arm and counterpoise arm

"St. Austell Govenor" comprising arbor with double gathering pallet striking arm and counterpoise arm on 2 pillars screwed to 2 bars, counterweight detached.

Object Number:: 1954-178/60

type:: arbors

Left plug rod with two tappets, nut & pin

Measurements:: overall: 170 mm x 150 mm x 7550 mm,

Object Number:: 1954-178/61

type:: plug

Right plug rod with cut-off slide nut & pin

Measurements:: overall: 150 mm x 355 mm x 7550 mm,

Object Number:: 1954-178/62

type:: plug

Upper plug rod with horizontal head of plug frame

Upper plug rod with horizontal head of plug frame, and strap, brasses, gib and cotter

Object Number:: 1954-178/63

type:: plug

Feed pump relief valve components

4 tappets and clack and pin with clevis of feed pump relief valve

Object Number:: 1954-178/64

type:: components

4 'U' shaped bars. 4 large & 4 small plates with holes

4 'U' shaped bars. 4 large & 4 small plates with holes, presumably keepers for holding down bolts & 4 cotters from cylinder holding down bolts.

Object Number:: 1954-178/65

type:: bar

A quantity of stud bolts

A quantity of stud bolts, nuts and washers, many of these would suit the steam joints

Measurements:: overall: 520 mm x 710 mm x 360 mm,

Object Number:: 1954-178/66

type:: bolts

Spings, clevis pins and iron components

Some springs (from U.S. piston rod packing ?), clevis pins (from gear?) and a quantity of rough iron components including 2 chaudron wheels. Many of these served as balance weights for the cataracts and balance boxes (see photograph in technical file)

Materials:: iron

Object Number:: 1954-178/67

type:: springs and clevis pins

Spare piston rod cap

Spare piston rod cap.

Measurements:: overall: 320 mm x 590 mm x 320 mm,

Object Number:: 1954-178/68

type:: piston rod cap

Two wooden beams for driving floor

Object Number:: 1954-178/69

type:: beam

5 wooden beams for middle chamber floor

Object Number:: 1954-178/70

type:: beam

Tongue and Grooved Floor Boards from Engine-House

Quantity of tongue & grooved floor boards (6 1/8" in face x 1 3/4" thick) from engine-house

Object Number:: 1954-178/71

type:: floor board

"Plug door" (bob wall of house)

"Plug door" (bob wall of house) and four parts of doorcase (incomplete as lacks short upright for top light. There was no cill)

Object Number:: 1954-178/72

type:: door

Posts and rails from staging outside plug door

Object Number:: 1954-178/73

type:: post

Staircase from Driving Floor to Middle Chamber

Staircase from driving floor to middle chamber

Object Number:: 1954-178/74

type:: staircase

Simple staircase

Simple staircase (either from driving floor, down floor or from middle chamber, up floor)

Measurements:: overall: 2760 mm x 630 mm x 140 mm,

Object Number:: 1954-178/75

type:: staircase

Length of handrail from staircase item 74

Object Number:: 1954-178/76

type:: handrail

Short length of handrail

Short length of handrail, 2 handrail end posts, a quantity of balusters for staircase and horizontalk rail in middle chamber and a piece of side skirting for a staircase

Object Number:: 1954-178/77

type:: handrail

4 wooden chocks in which balance box bearers

4 wooden chocks in which balance box bearers (item 44) work. Chock for the St. Austell govenor (item 60) and four other shaped wooden pieces

Measurements:: overall: 340 mm x 630 mm x 480 mm,

Materials:: wood

Object Number:: 1954-178/78

type:: chock

Cylinder cleading boards

A quantity of cylinder cleading boards (about a full-set; no cleading bands found)

Measurements:: overall: 90 mm x 1170 mm x 3080 mm,

Object Number:: 1954-178/79

type:: cylinder

One spring beam ie longitudal timber from top chamber floor; there should be two

One spring beam [ie longitudal timber from top chamber floor; there should be two]

Measurements:: overall: 400 mm x 235 mm x 5970 mm,

Object Number:: 1954-178/80

type:: beam

Wooden hood to go over gudgeon of beam

Measurements:: overall: 1900 mm x 910 mm x 860 mm,

Materials:: wood

Object Number:: 1954-178/81

type:: hood

Crank, to fit 1 3/4" nom base arbor

Crank, to fit 1 3/4" nom base arbor (purpose not known).

Measurements:: overall: 65 mm x 295 mm x 80 mm,

Object Number:: 1954-178/82

type:: crank

Component

Object Number:: 1954-178/83

type:: components

4 Tread wooden steps

Measurements:: overall: 720 mm x 1030 mm x 1100 mm,

Materials:: wood

Object Number:: 1954-178/84

type:: steps

engineering drawings

A set of engineering drawings associated with the Carpella engine.

Object Number:: 1954-178/85

type:: drawings

Part of the steam supply pipe to the engine

Part of the steam supply pipe to the engine, originally partly built into the house structure and removed when the engine house was dismantled.

Object Number:: 1954-178/86

type:: steam pipe

Details

Parts