Wilson, Joseph M. (ed.) / The Masterpieces of the Centennial International Exhibition illustrated: history, mechanics, science
Wilson, Joseph M.
Mechanics and science, pp. -375 ff.
14 THE INTERNATIONAL EXHIBITION, I876. brated-solid, substantial and neat, with no useless ornamentation, every part fitted to gauges and thoroughly interchangeable, the whole being an excellent specimen of American manufacture. In connection with the motive-power exhibits we may very appropriately mention Lonergan's Patent Oil-Cups and Automatic Lubricators. The principles upon which they work have been beautifully carried out, resulting in most excellent forms of apparatus for the requirements. The oil-cups are of several varieties to suit different purposes. Our first engraving, on page 15, shows the usual construction for stationary motion, being partly in section and partly an exterior view. It consists of a metallic cup or casing, A, A, pierced by diamond-shaped openings in the cylindrical part, with a tube, B, to be connected with, and passing to, the part to be lubricated. Inside of this casing is a glass cylinder, C, with cork rings, D, D, at top and bottom. The cap, E, screws down tightly on to the cork, making an oil-tight joint. A plug, F, with ground joint, and held in place by a spiral spring, G, effectually closes the tube B and prevents the passage of oil unless desired otherwise. This plug connects with the handle, H, H, on top, the connection being movable through the cap, E, of the casing and hollow in the upper portion as shown at I, I, there being openings, K, at the lower end of this hollow space, and a cap, L, screwed on at the top, the latter having an air-hole, 0, pierced through it. A set screw, M, passes through the rim of the handle, H, with a rest, N, for the same in the cap, E. When it is desired to fill the cup, the cap, L. is unscrewed and the oil poured in, the handle, H, being turned around until the set-screw, M, is off of its rest, N, the plug, F, then tightly closing the entrance to the tube, B. After filling and replacing the cap, L, then by turning the handle, H, and placing the set-screw, M, on its rest, we can, by adjusting this screw, regulate exactly the required amount of opening necessary at F for the proper oiling of the machine. When the machine is at rest and no oiling needed, it is only requisite to raise the handle, H, and turn it so as to move the set-screw from its rest, and the spring, G, at once closes the plug, F, into the opening of B and stops the consumption of oil. Figure 2 shows a modification adapted to movable parts under rotary motion. The spring, G, is dispensed with and the loose plug, F, has a little stop, P, in it, the set-screw, M, being differently arranged as shown. At each rotation the loose plug,
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