IMPROVED HAY ELEVATOR.

Eugene L. Church, Walworth, Wis.--This is a hay elevator and carrier

of simple and effective construction; and it consists essentially of a

traveling carriage locking, by a tilting catch, on a fixed stop block

of the track, from which it is released by the action of the bail

of the sheave frame of the hay fork on a pivoted grappling hook, the

sheave being held in suspended position by the joint action of a fixed

hook, of the pivoted hook, and of the tilting catch. A track beam,

which is suspended from the rafters of a barn or other building by

means of eyebolts passing through the center of the track beam. A

carriage runs along the track beam by a pair of flanged wheels, at

each end of which the wheels of one pair are set at such distance from

each other that they clear readily the suspension bolts as they pass

along the same. A hoisting rope is attached, in the customary manner,

to a fixed point at one end of carriage, and passed then through the

sheave frame of the hay fork, and over a pulley of the carriage, and

through a sheave at the end of track beam, and down to the ground,

where a horse is hitched to its free end.

Scientific American, Vol. XXXVII.—No. 2. [New Series.], July 14, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures · 第 69 / 213 题