This Boyle’s machine was made by the British Oxygen Company (BOC) in the 1950’s. The original Boyle's machine was invented by the British anaesthetist, Henry Boyle in 1917. His machine was a modification of the American Gwathmey apparatus of 1912, and became the best known early continuous flow anaesthetic machine. The Boyle’s machine was first made by Coxeter and Sons, under the direction of Lord George Wellesly, which was later acquired by the British Oxygen Company (BOC). Though a lot of changes have been made to the original design of the Boyle’s machine, the basic structure remains the same today.Green trolley on casters with flowmeter and vaporiser bottles attached to a stainless cross bar. There is a glass shelf at top of the trolley and a second glass shelf at base of trolley, above a pull out drawer. The pull out drawer contains 4 x black rubber masks, 3 x black rubber tubing connectors, 4 x seals, 1 a black corrugated rubber hose with red rebreather bag, red tube and masonite support board.Tin plate attached to upper portion of trolley: THE / BOYLE / apparatus / BY THE BRITISH OXYGEN CO. LTD.henry boyle, anaesthetic machine, gas, oxygen, flowmeter, nitrous oxide, british oxygen company, boc, coxeter and sons

In 1905 Richard Squire was manager of the West Berry Consols at Allendale, and developed an improved system of mine ventilation, which was supported in "The Age."[4] He was successful in combating and remedying the gas and ventilation troubles of the Deep Mines of Creswick and Allendale Districts after all had failed.[5] MINE MANAGERS’ ASSOCIATION. Ballarat Branch. ... Mr R. B. Squire, manager of the West Berry Consols, at Allendale, submitted a paper detailing what he had done tor the betterment of ventilation in the alluvial mines of Smeaton and Mary borough districts- Members gave Mr Squire every credit for the results that he claimed to have effected; the adoption of his ideas had testified to their value to mine-owners. It was painted out, however, that for want of a thorough debate of the subject with experienced men the author had unwittingly included some general statements that required modifying in some points and extending in others, in justice to other workers among the earlier and the present day managers of mines. It was decided to invite the author to meet a sub-committee on this subject![6]Handwritten letters from Richard Squire to his son Tom and Family reporting happening at the mine richard squire, tom squire, engine trouble, basil, f.l. smythe broker, trembath, w. ryall, mt mercer, flu, plant, skids, pump, c. hayes, illness, poppet, carburetor, mum, ned, shaft, balance weight, hazel squire, pearson, pulleys, syndicate, goon, len hopkins, suction, dunstown, lease, jim squire, bannockburn, nina, albert, mrs trenery, connie, jay, judy squire, cohuna, bladder attack, reports, estimates, dunstan & coy, jelbarts, barrett, flat fields, brown, gold estates, berry leads, parsley roots, share book, meredith, reef, pay sheet, colin, mr gibbs, l.r.g plan, banagwanth, mcnaughton bores, glenfine, allan, william thomas, john lynch, crawford, shelford, liz the car, trucks, chandlers, ballarat trustees, cameron, elaine, mrs read, clark, j. hayes, dunlop, dr lawrence, eye specialist, reid, mullock bank, jack squire, herman, peter's legal inc. ballarat, freddie reid, j.r. whipp, a.b. reid, grenville, leigh river plan, johnstone's, premier petrol coy, chandler's, ballarat deep leads extension, harwood & pincott, a. rice, lillas, l. e. walker, secretary for mines, pipeclay, sandstone, mr saville, weymouth & carroll, suction pipe, valves, financiers, gold mines of australia, mr hanley hunter, sadowa coy, kerang shareholder, buninyong, stanley hunter, len, fran, max, dr jones, honeycomb rock, booth, sandy mcnab, emily shaw, john cock, ross creek, mitchell, rowe, neil cameron, walker, kidney disease, holst, nellie, ronaldson's, ronaldson & tippett, brokers, investors, lockett, miller & co, wellesly, john sharpe, elizabeht ellen, old lawaluk, mining