The engineer's sketch-book of mechanical movements, devices, appliances, contrivances and details employed in the design and construction of machinery for every purpose

by Thomas Walter Barber

[2306]. Swivel joint for pump rods, &c.

[Larger plate.]

[2307]. Screw socket and spigot joint for rods.

[2308]. Conical socket joint and set screw.

[2309], [2310], [2311] & [2312]. Socket joints, various forms of. See also [Section 28].

[2313]. Taper drill socket. The drill socket end is shaped to fit a cross slot in the holder, into which a taper cotter can be driven to loosen the drill; the slot gives a positive drive to the drill.

Section 51.—LUBRICATORS.

(See also [p. 120].)

[2314]. Lieuvain’s needle lubricator, with bent needle for oiling a crank pin. The latter has a pad attached, which rubs in passing the bent needle and thus takes off the oil.