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pump e is led through the steam-jacketed chamber m to enable it to volatilize the bisulphide of carbon in a. g is a gas-holder to hold any superfluous gas, to keep the capacity adjusted to the varying volume of the contents. The boiling-point of the bisulphide of carbon is 118° Fah. The process is adapted to dissolving the oils contained in the strippings of machine-cards in factories, and saving the waste from the axles of car-boxes, the journal-boxes of machinery. See also Sim's and Hutchinson's processes and machines, patented 1869, 1870, 1871. These are also particularly intended for extracting fusel-oil from grain. Oil-fil′ter. Robinson's oil-filter acts by the upward pressure of a column of water below the oil. The operation is as follows: — Robinson's oil-filter. Oil-gas apparatus. The butt g of oil being placed on a stillion, communication is made with its lower portion by means of a pipe a leading from a cistern of water n. As the water flows into the bu
hout mitering with the horizontal cross fillets on the panels. Ru′pert's drop. A tear-shaped drop of unannealed glass. On breaking a piece from the point or tail the whole drops to pieces. This philosophical toy was first brought into notice, perhaps invented, by Prince Rupert, nephew of Charles I. of England. Mr. Peter did show us the experiment of the chymicall glasses, which break all to dust by breaking off a little small end; which is a great mystery to me. — Pepys, 1662. Hutchinson's forceps for rupturing the prepuce. Rup′tur-ing-for′ceps. (Surgical.) An instrument used in rupturing the prepuce in cases of phimosis. It is introduced between the glans and the prepuce, distending the latter to rupture or forming a director for the bistoury. Ru′ral lock. (Locksmithing.) A cheap kind of lock with a wooden case. In Fig. 4505, K is the key having studs which lift the spring tumblers H H′ out of the notches i i in the springbolt C. The spring-tumbl
l 23, 1867. Starch and cellulose treated in acidulous water, boiled under pressure. Saccharine liquid neutralized with lime, filter, defecate with bone-black, concentrate to 20° B. Allow the lime to precipitate. Filter; neutralize with soda. Boil, crystallize (?) Mold. Loew, June 25, 1868. Woody fiber digested in hydrochloric acid, and heat; acid distilled over. Glucose and paper-stock the results. Wesselholft, October 6, 1868. Extract of malt for dietetic purposes. Sim and Hutchinson, March 16, 1869. Meal treated with bisulphide of carbon to extract oil, rendering starch more easily saccharified. Delamarre, December 6, 1870. Sweet potatoes steamed, mashed, and mixed with malt, macerated, steamed, pulp precipitated, saccharine liquid decanted, concentrated. Grosheintz, May 23, 1871. Hydrochloride or sulphuric acid saturated with an alkali to produce a salt which may remain in the saccharine matter. Sug′ar-cane mill. A mill for grinding sugarcane. See Fig