Accession No

5179

Brief Description

bomb calorimeter, by Griffin and George Ltd. and Vitreosil, English, 1/2 20th Century

Origin

England

Maker

Griffin and George Ltd. Vitreosil

Class

laboratory apparatus

Earliest Date

1900

Latest Date

1950

Inscription Date

Material

metal (steel, brass copper); glass; wood (pine); plastic (ebonite); rubber

Dimensions

overall height 420mm; outer diameter 200mm; box of accessories 280 x 165 x 160mm

Special Collection

Provenance

Donated by Anglia Polytechnic University (now Anglia Ruskin University), East Road, Cambridge, on 20/08/1997.

Inscription

‘SERIAL NOP6307-800 STEEL BS 1501-845B GRIFFIN AND GEORGE LTD’ (on steel canister)
‘VITREOSIL
ENGLAND’ (on crucible)

Description Notes

Hollow steel canister 80 mm in diameter, in base steel plug with ring to support cloudy glass crucible, held in place by a screw ring with three steel feet and sealed with a rubber gasket. At top of canister another steel plug, with a brass wing nut and screwed valve inlet on top , also place for (slightly bent) steel lifting handle to screw in, plug held in place by screw ring and gasket. Canister fits into copper cylinder on three ebonite feet, two knurled knobs near top, from one of which insulated wire runs to the base of the cylinder. Joined at top and bottom to a narrower copper cylinder with three triple bladed propeller shaped stirers on a rod inside it. Outer jacket in copper with a brass rim, support for stirer shaft in grey painted metal (missing one of two pulleys). Rough pine box containing: reel of fine fuse wire, screw in handle for lifting bomb, grey painted carrying handle for bomb, 10 valve pins, a spare rubber seal, a knurled brass knob, a small steel plug and a length of bent copper pipe. Box also fitted to hold bomb. No thermometer.

Condition good; incomplete (thermometer missing)

References

Events