This section is from the book "The Engineer's And Mechanic's Encyclopaedia", by Luke Hebert. Also available from Amazon: Engineer's And Mechanic's Encyclopaedia.
An ingenious contrivance, of comparatively recent introduction, for drawing beer from different casks, situated in an apartment or cellar beneath, without descending for that purpose; by which means much trouble and great waste of liquor is avoided. The machine consists of three or four small lift and force pumps, firmly bedded in two blocks of wood, and inclosed in a handsome mahogany case. To the lower end of each pump is attached a suction pipe, which is inserted in a cask of beer, (each pump being employed to draw a particular quality of beer,) and from the upper end of the pump proceeds a pipe connected to a nozzle in front of the case of the machine. The piston rod passes through a small stuffing box on the cover of the barrel, and through a guide, by which its parallel movement is secured; and it is connected by slings to a bent lever, by which it is worked. This lever consists of a short arm, to which the slings are attached, and stands at an angle of about 130° with the long arm or handle, which works through a slit in the semicircular head of the case.
A small cistern of white metal is fitted to the case beneath the nozzles, and from it a pipe conveys the drippings to the waste-butt.

 
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