US367962A

US367962A - Hoisting-machine

Info

Publication number: US367962A
Authority: US
Publication date: 1887-08-09
Anticipated expiration: 1904-08-09

Description

(No Model.)

- P. GONNOLLY.

' HOISTING MACHINE.

No. 367,962. Patented Aug. 9, 1887.

ATTORNEYS.

N. frrz'ns FhOb-Uthngnphur, Washingtom n, a

UNITE STATES PATENT OFFICE.

PATRICK CONNOLLY, OF SORANTON, PENNSYLVANIA.

HOlSTlNG-MACHINE.

SPECIFICATION forming part o Letters Patent No. 367,962, dated August 9, 1887.

Application filed May 16, 1887. Serial No. 238,391. (No model.)

To all whom, it may concern:

Be it known that I, PATRICK CONNOLLY, of Scranton, in the county of Lackawanna and State of Pennsylvania, have invented a new and improved Hoisting Machine, of which the following is a full, clear, and exact description.

The object of my invention is to provide a hoisting device for use principallyin mines for putting roof timbers and props or struts in place; and the invention consists of the machine constructed substantially as hereinafter described and claimed.

Reference is to be had to'the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a front elevation of my new hoisting apparatus. Fig. 2 is'a side elevation of the same. Fig. 3 is a detailed sectional view' of the pawl-and-ratchet and lever mechanism for revolving the drum. Fig. 4 is an enlarged end view of the brake applied to the drum,

and Fig. 5 is an enlarged side view of the detachable platform.

A represents a strong frame of suitable length and provided at the base with an extension piece or leg, B, which is notched at each side, as shown at b, and slides in the plate a and guide or cross piece a. Pawls (Z (Z are pivoted in the plate a to engage with the teeth I) for locking the leg B at any position at which it may be extended for elevating or lowering the frame A, as circumstances require.

At'or a little below the center of the frame A is journalcd the winding-drum O, on which is placed the rope D, which passes up over the pulley f, secured upon the rod or shaft f at the top of the frame A. The rope, after passing over pulley f, is connected to the sliding block E, applied to the frame A, so that by turning the drum 0 the said block may be raised and lowered or moved along the frame A. The block E is provided with arms E E, on which a stick of timber or other object to be hoisted may be placed.

The drum 0 may be revolved by a crank or the ratchet-lever F, the pawl g of which en= gages the ratchet-wheel g, secured to the shaft or gudgeon of the drum 0.

g is a stop-pawl to prevent the drum 0 from turning back. Upon the opposite end of the drum 0 is applied a brake composed of the pivoted lever H and the strip or band H, at-

tached at one end to the pivot of the lever H, passed thence on the drum, and connected at the other end to the saidlever,so that by forcing the lever downward the drum 0 may be prevented from turning back at rapid speed, even though the two pawlsgg were disengaged from the ratchet-wheel 9.

J represents a platform connected to the frame A, and in this instance this platform may be raised and lowered by means of the series of clips j j, secured in the frame A, and the arms j j, attached to the platform and formed with studs 3' adapted to enter the clips j, as will be understood from Figs. 1 and 5.

The pawl 9 may be disengaged from the ratchet g by means of the hand-lever 71, one end of which engages with the rear end of said pawl, as shown in Fig. 3.

In use, the apparatus being placed. in the mine and the leg B extended to properly support same, the timber to be lifted will be placed upon the arms E and the lever F operated, which will wind up the rope D and elevate the timber.

In case any fitting is required the platform J will be attached to the frame, and on this platform a person can stand and easily do the work required. I

The apparatus is applicable for use not only in mines, but in various other situations.

Having thus described my invention, what I claimas new and desire to secureb Letters Patent, is-

1. A hoisting apparatus comprising a main frame, A, a sliding block, E, with arms E, an extension-leg, B, a winding-drum, O, rope D, and a top support or pulley for the rope, sub stantially as described.

2. The main frame A of a hoisting apparatus, in combination with the extensiouleg B and the pawls d, the leg being notched, substantiall y as described.

PATRICK CONNOLLY.

Witnesses:

GRACE M. TEAL, G. W. MILLER.