US595308A - james - Google Patents

Description

(N0 Model.) 2 Sheets-Sheet 1.

U. S. JAMES.

HOISTING DRUM.

No. 595,308. Patented Dec. 14,1897.

M Attorney! {No Model.) 2 Sl1eets-Sheet 2. U. S. JAMES.

HOISTING DRUM.

No. 595,308. Patented Dec. 14,1897.

I I II II Ilium...

ilivTTTn STATES PATENT OFFICE,

ULYSSES JAMES, OF HELENA, MONTANA, ASSIGNOR OF ONE-HALF TO LEVVIS II. GRAVES, OE SAME PLACE.

HOlSTlNG-DRUM.

SPECIFICATION forming part of Letters Patent No. 595,308, dated December 14, 1897.

Application filed April 15, 1897. Serial No. 632,304. (No model.)

To ctZZ whom, it may concern.-

Be it known that I, ULYSSES S. J AMES, a citizen of the United States, residing at IIelena, in the county of Lewis and Clarke and State of Montana, have invented certain new and useful Improvements in Hoisting Apparatus, of which the following is a specification, reference being had therein to the accompanying drawings.

Referring to the drawings, Figure 1 is a plan view, Fig. 2 a vertical section, and Fig. 3 an end view, of my improved apparatus.

The design of my invention is to provide a strong and safe apparatus especially for use in mining, as more fully hereinafter set forth.

lVithin a strong frame a is mounted the horizontal drum 1) of the usual or any improved construction. The vertical shaft 0 of the drum is journaled in suitable bearings d d, secured to the framework, its lower end being stepped in a bearing D carried by a pivoted lever 0., located underneath the drum. The free end of this lever is pivotally connected by a link f to an arm g, carried by a crank or rock shaft g, journaled horizontally in the frame to one side of the drum. Connected to a crank on one end of this shaft is a suitable operating-rod 9 By these means the shaft, as will be observed, may be readily raised and lowered endwise, sliding freely through its two bearings d d.

The hub of the drum is a hollow casting h, substantially rectangular and having lateral flanges at its upper and lower corners to embrace the transverse beams t' of the drum, to which beams the hollow hub or box is securely fastened. Hollow trunnions 71 project, re spectively, from the upper and lower sides of the hollow box, the lower trunnion fitting around the upwardly'projecting cylindrical part 7& of the lower bearing d and resting on the horizontal flange of said bearing, and the upper trunnion being j ournaled in a bearing 7;, supported on the frame a, this trunnion loosely embracing the shaft 0. By these means the drum is firmly supported concentrically with the shaft and allowed to rotate freely independently thereof. Keyed rigidly to the shaft, within the hub-box, is the n1ovable part Z of the clutch, which engages the other part Z of the clutch, this latter part being formed on the bottom of the hub-box within the same.

The drum is provided on the upper edge of its rim with a circular series of ratchet-teeth m, and engaging these teeth is a pawl 'm, pivoted on the adjacent part of the frame above the drum, the pawl being held in engagement with the ratchet-teeth by gravity. Depending from the free end of the pawl is a pivoted trip-rod m whose lower end is provided with a stop hi adapted to be struck by the lever 6 when the latter is raised, thereby disengaging the pawl and leaving the drum free to rotate. bifurcated at its lower end to embrace the lever 6 and be guided thereby.

The upper end of the shaft 0 is provided with the usual sweep-socket n, and the drum is provided with the usual band-brake 0, connected to and operated by the usual lever 0. As shown in Figs. 2 and 3, the lever 6 works in and is guided by a vertical loop 19, depending from the upper portion of the framework.

It will be observed that normally both the clutch and the pawl are in engagement, the latter serving, as usual, to prevent the drum unwinding. hen it is desired to release the drum, the operator simply raises lever e, whereupon the shaft is raised and the movable part of the clutch disengaged from the hub of the drum. Then as the lever e rises higher it strikes the stop m and disengages the pawl on, holding the pawl out of engagement until the lever is lowered. It will thus be seen that the shaft is released before the pawl is disengaged, whereby all backlash against the animal attached to the sweep is avoided.

The essential advantages of this hoisting apparatus lie in its compactness and safety. These arise particularly from the peculiar construction of the hub and clutch. The hub is made hollow and entirely incloses the clutch parts, the lower part of the clutch being an integral part of the hub. This arrangement of the clutch devices brings them directly in line with the strain on the drum, this being of great importance when the drum is heavily loaded, as in that case the great strain has a tendency to twist and strain the shaft and would be liable to disengage the clutch if 10- The lower end of rod m is IOO cated above or below the drum. In my clutch there is practically no danger that the heavy straining of the shaft or of the drum will disengage the clutch parts or that the parts will be otherwise accidentally disengaged.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is- I 1. The combination of a frame, a drum journaled therein and having its hub made hollow, an endwise-movable shaft journaled in the frame, means for adjusting said shaft endwise, a two-part clutch inclosed within the hub, one part of the clutch being attached to the hub and the other part carried by the shaft, substantially as described.

2. The combination of a frame, a vertical shaft journaled therein, bearings supporting said shaft, a lever carrying one of said bearings, means for raising and lowering said 1ever, a drum journaled in the frame and provided with a ratchet, a two-part clutch, one part carried by the shaft and the other part by the drum, a pawl engaging the ratchet on the drum, a trip-rod connected to the pawl and adapted to be engaged by the movable lever carrying the shaft-bearing,substantially as described.

8. The combination of a frame, a vertical shaft and means for endwise supporting and adjusting said shaft, bearings 61 d supporting said shaft, the lower bearing cl having an upward tubular extension, a drum having a hollow hub, said hub having upper and lower tubular extensions or trunnions, the upper one embracing the shaft and the lower one embracing the upward tubular extension on the lower shaft-bearing, a bearing 70 attached to the frame and embracing the upper trunnion, and a two-part clutch inclosed within the hub, one part being carried by the hub and the other part by the shaft, substantially as described.

In testimony whereof I affix my signature in presence of two Witnesses.

ULYSSES S. JAMES.

lVitnesses:

WVALTER H. LITTLE, RALPH T. BICKELL.

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