US363097A

US363097A - trailer

Info

Publication number: US363097A
Authority: US
Publication date: 1887-05-17
Anticipated expiration: 1904-05-17

Description

(No Model.)

0. R. TRAXLER.

HOISTING APPARATUS.

:No. 363,097 Patented May 17, 1887.

Uirnn STATES Arnr rricn.

CISCO R. TRAXLER, OF HASTINGS, NEBRASKA.

HOISTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 363,097, dated lday 1'7, 1887.

Application filed September 1, 1886. Serial No. 212,429. (No model.)

To all whom it may concern.-

Be it known that I, Crsoo R. TRAXLER, a citizen of the United States, residing at Hastings, in the county of Adams and State of Nebraska, have invented a new and useful improvement in Hoisting Apparatus, of which the following is a specification.

My invention relates to an improvement in hoisting-machines; and it consists in the peculiar construction and combination of devices, that will be more fully set forth hereinafter, and particularly pointed out in the claims.

I11 the drawings, Figure l is a front elevation of a hoisting-machine embodying my improvements. Fig. 2 is a side elevation of the same. Fig. 3 is partly a front elevation and partly a vertical section on the line a: a: of Fig.

7 2. Fig. dis a verticaltransverse sectional view taken on the line y g of Fig. 3, the quadrantarm being omitted. Fig. 5 is a detailed sectional View taken on the line .2 z of Fig. 4.

A. represents a pair of vertical standards, in which is j ournaled a transverse shaft, B, that is provided with a drum, 0. On one end of the shaft, which projects beyond one of the standards A, is rigidly secured a head, D, comprising a friction-pulley, E, having a sleeve, F, projecting from its inner side. The said sleeve F is reduced at its inner end, thereby forming a bearing, G, which is of less diameter than the adjacent bearing H. Notches I or recesses are made in the face of each hearing, G and 1-1, and in the said notches or recesses are secured pawls K and L. The pawls K are secured to the bearing H, and the pawls L are secured to the bearing G, and the said pawls K and L extend in opposite directions. On the bearing H is journaled a spurpinion, M, which is provided with interior ratchet teeth adapted to be engaged by the pawls K when the pinion is rotated in the direction indicated by the arrow in Fig. 3. On the bearing G is journaled a similar spur-pinion, N, which is also provided with interior ratchetteeth, which are adapted to be engaged by the pawls L when the said pinion is rotated in the reverse direction to that indicated by the arrow in Fig. 3.

0 represents a bracket, which is bolted to one of j the standards A at a suitable distance above the projecting end of the shaft and out of line vertically therewith. This bracket is provided with a horizontallyproieeting spindle, O, on which is pivoted a rocking quadi'antarni, P. The said arm is provided near its curved side with a segmental slot, R. Upon the lower side of said slot is asegmental rackbar, S, the teeth of which are adapted to e11- gage the pinion N. On the upper side of the segmental slot is a rack-bar, T, which also forms a segment, and the teeth of which engage the pinion M on the upper side of the latter. The lower end of the slot R is plane, and is not provided with teeth on either side.

U represents a brakeblock, which is formed with the quadrantarm and extends outwardly over the lower end of the slot R, and is adapted to bear upon the frietionpulley E. ()n the upper side of the quadrant-arm is formed a triangular arm, V, which is provided with a curved slot, V, drawn from the center of an opening, X, that is made in the arm P.

Y represents a hand-lever, which is fulcru med on a bolt, Z, that projects through the opening X. A bolt, Z, extends through the slot V and through the hand-lever Y, and is provided with a clainpiiignut, Z

From the foregoing description it will be readily understood that the hand-lever Y is permitted to move independently of the quad rant-arm for a distance corresponding to the radius of the curved slot W.

The operation of my invention is as follows: The rope or chain to which the weight to be elevated is connected is attached to the drum 0. In order to rotate the said drum, so as to cause it to wind up the rope and elevate the weight, the hand-lever Y is grasped and 0s cillated through a portion of a circle, thereby causing the quadrant-arm to also oscillate. \Vhen the said arm moves in the direction indicated by the arrow a in Fig. 3,. the segment-raek T engages the pinion M and rotates it idly on the bearing H, and the segmentrack S engages the pinion N and rotates it in the opposite direction from the pinion M, thereby causing the pawls L to engage the said pinion N and cause it to communicate its rotation to the shaft B, carrying the drum, thereby rotating the latter. On the reverse movement of the quadrant-arm the rotation of the pinions is reversed, and the pinion M is engaged by the pawls K, thereby imparting its movement to the shaft B, while the pinion N slips idly over its pawls L. The pinions M and N are thus rotated si multaneousl yin opposite directions, and their motion is reversed at each movement of the quadrant-arm; but the shaft B is rotated constantly in the same direction, being alternately engaged by the pini'ons M and N. If it be desired to lower the weight, the hand-lever Y is moved upwardly, thereby throwing the pinions into the plain end of the slot R, which is not provided with rack-teeth, and the pinions are thus disengaged from the quadrant-arm, and the shaft B is free to rotate in the reverse direction from that previously described. In order to regulate the speed at which the weight descends, the handlever Y is moved upwardly to the extreme limit o'fits movement, thereby causing the brake-bloek U to bear upon the pulley 1 and by frictional contact therewith prevent the shaft from rotating too rapidly.

Having thus described my invention, I claim- 1. The combination of the shaft 13, having the two series of pawls extending in opposite directions, and provided with the friction-put ley E, the'pinions journaled on the said shaft and adapted to be engaged by the pawls, and

I the oscillating arm having the segmental rack engaging the pinions on opposite sides, the said oscillating arm being provided with the brake-block adapted to bear upon the friction-pulley when the pinions are not engaged by the rack-bars, for the purpose set forth, substantially as described.

2. The combination of the shaft B, having the friction-pulley E and the two series of pawls extending in opposite directions, the pinions j ournaled on the said shaft and adapted to be engaged by the said pawls, the rocking quadrant-arm having the segmental rack-bars adapted to engage opposite sides of the pinions, the said quadrant-arm being provided with the brake-block adapted to engage the friction pulley when the segment rack-bars are not engaged by the pinion, and the handlcver Y, pivoted to the quadrant-arm and movable independently thereof for a slight dis tance, for the purpose set forth, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature-in presence of two witnesses. V

' GISCO R. TRAXLER.

\Vitnesses:

L. A. ROYCE, C. H. AINGTON.