US662292A - Whim. - Google Patents

Description

Patented Nov. 20, [900.f .1. H. uBmEN. Y 4

WHIM.

(Application flied May 1 6, 1900,)

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JOHN H. OBRIEN, OF NASBY, SOUTH DAKOTA.

SPECIFICATION forming part of Letters Patent No. 662,292, dated November 20, 1900.

Application filed May 16 1900.

To al?, whom it may concern,.-

Beit known that I, JOHN H. OBRIEN, a citizen of the United States, and a resident of Nasby, in the county of Lawrence and State of South Dakota, have invented a new and Improved Whim, of which the following is a full, clear, and exact description. v

The object of the invention is to provide a new and improved whim or miners hoist, to the end that the Sallie may be operated with perfect control and freedom from accidents.

The invention consists in the novel features hereinafter particularly described, and defined in the claims.

Reference is to be had to the accompanying drawings, forminga part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure l is a perspective View of a hoistingwhim embodying my invention. Fig. 2 is a central vertical section, the tripod or frame at the mine-shaft being omitted. Fig. 3 is a plan view of the parts shown in Fig. 2, a fragment of the tripod being included; and Fig. 4 is an elevation of rnyimproved bucket-hook, part of the hook being broken away.

The horizontal hoisting-drum A is operated by the sweep B, which has a suitable drafttree b' for the horse and depending knees or clutch-arms b,which enteropenings a between the spokes a* of the drum. The drum rotates around the vertical hollow standard or bearing c, risingfrom the frame O, the eye of the drum being hushed, as at a'. The sweep B has a central pin B', which passes downward through the bearing c and rests on the short arm of a foot-lever D, said lever being housed by a boxing D' below the surface of the ground and having its outer end d inclined upward to a height to be conveniently pressed upon by the foot of the operator, the weight of the sweep normally tending-to press down the in ner end of the lever and drop into engagement with the drum A. A latch E, pivoted to a standard A2 of the frame, is shouldered at e, Fig. 1, and is adapted to be swung over into engagement with the free end d of the lever D, and thus hold the sweep in the inoperative position at the will of the operator.

The hoisting-rope F passes from the drum over an idler a2 on the frame and up over a second idler g on the ordinary tripod or frame Serial No. 16,884. (No model.)

G at the mine-shaft, and at its lower end said rope carries a bucket-hook H for engaging the bail of the bucket I. The hook H isI of novel form to facilitate hitching on to and casting oi the bucket, which latter is, as usual, dumped into a car (not shown) which is run beneath the bucket. The body or shank of the hook is secured at its upper end to the rope and is formed of two spaced members H' H2, and at the lower end of the body a tongue 7L' is pivoted to swing in the vertical plane. -A sliding ring h2 is adapted to be slipped downward over the tongue when the latter is raised, and a spring-catch h3 holds the ringin the lowered position, the said catch having a bend h4 for engaging the ring and being bent outward at its free end, as at h5,

forconvenience of manipulation. Thespringcatch h3 may be pressed inward between the members H' H2 in releasing the ring and tongue.

A brake-band J, secured to the frame at j, extends around the drum to a connection with a brake-rod J', the brake-band having ears j', which rest on suitable blocks as, which may be a part of the frame A. Thus the brake is maintained in position when slackened. The brake-rod J' is connected by links ,7'2 with the brake-lever J2, which is fulcrumed to the frame at .7'4 below the connection with the brake-rod J', and a plate ji on the lever J 2 engages a ratcheted segment K for holding the brake set.

In connection with the brake a safety device L is provided which may be thrown into engagement with the drum upon releasing the brake. Thus the safety deviceL isin the form of an elbow-lever,havinga dog or toothed head L at the elbow, the short arm being fulcrumed to the frame at Z2 and the longer arm pivoted to the brake-rod J', the arrangement being such that an abnormal movement of the brake-rod in the direction to release the brake will throw the toothed dog L into engagement with the drum A and positively hold the drum against movement should the harness brake or the horse back up while the drum is relieved. The dog L' is slotted, as at l, and adj ustably secured by bolts Z'. Vith this arrangement, including the hook l-l, the operator can control the hoist and dump and lower the bucket without backing up and IOO slackening therope, which is necessary with ordinary hooks. l y

In operation the bucket is raised high enough to permit a car to be run under the bucket. The tender then depress'es the foot! lever, thereby disengaging the sweep from the drum, and at the same time he puts lthe brake on hard. Then by keeping command of the brake the bucket is lowered onto the car,

and this done, without letting the rope slack,

the brake-lever is locked with the brake ap-V plied, and the hook His manipulated to cast off the bucket.. The operator is now free to run the car out and empty the bucket, and

upon returning the car beneath the hook the bucket may be readily engaged by the hook H without slackeniug the rope. With the rope thus maintained free from slack the bucket can be swung clear of the car and will hang plumb without the necessity of starting the horse to take up slack, as is the case Where ordinary bucket-hooks are employed.

Having thus described my invention, I claim as ne1 and desire to secure by Letters Patent- 1. A hoisting apparatus comprising a frame, a drum, a hoisting-rope, a sweep debrake.

an arm connected with the brake-rod, and an adjustable dog` mounedbn the lever and movable into engagement with the drum by an excessive In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

` JOHN H. onRiEN.

Witnesses:

E. MCDONALD, J. W. HIGBIE.

releasing movement of the

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