US511014A - Hoisting device - Google Patents

Description

(No Model.)

H. HAGELSTEIN.

HOISTING DEVICE.

No. 511,014. Patented Dec. 19, 1893.

min y 2 NATIONAL LITWDGRAFHMI: COMPANY UNITED STATES PATENT OFFICE.

HENRY HAGELSTEIN, OF SAN ANGELO, TEXAS.

HOlSTlNG DEVICE.

SPECIFICATION forming part of Letters Patent No. 511,014, dated December 19, 1893.

Application filed August 16,1893. fierlal No. 483,295- (No model.)

To all whom it may concern.-

Be it known that I, HENRY HAGELSTEIN, a citizen of the United States, residing at San Angelo, in the county of Tom Green and State of Texas, have invented a new and useful Hoisting Device, of which the following is a specification.

The invention relates to improvements in hoisting devices.

The object of the present invention is to provide a simple an inexpensive hoisting or lifting device adapted for extracting stumps, lifting stones and other heavy bodies, stretching wires, and for serving as a lifting jack for vehicles and analogous uses.

The invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure 1 is a perspective view of a lifting device constructed in accordance with this invention and shown arranged for extracting stumps. Fig. 2 is a side elevation of the device detached. Fig. 3 is a longitudinal sectional view of the same.

Similar numerals of reference indicate corresponding parts in the several figures of the drawings.

1 designates a casin g, composed of two similar sides 2, and having slidingly mounted in it between the sidesa rack-bar 3, provided at its longitudinal edges with teeth 1, which are engaged by operating levers 5, fulcrumed on the casing. The casing is provided at one end with lateral extensions 6, formed integral with the sides 2 and provided with bearingopenings 7, in which are loosely arranged pivots or trunnions 8, of the operating levers 5. The operating levers 5 are provided at their inner ends with heads 8, of segmental form, provided at the curved edges with teeth for meshing with those of the rack-bar which may be moved either inward or outward according to the character of the work to be performed. The bearingopenings 7 are trefoil-shaped, and consist of three bearing recesses arranged in the form of a triangle as shown, the inner two forming bearings to en able the rackbar to be forced upward and downward, and the outer recess being for the purpose of permitting the segmental heads of the operating levers to be disengaged from the rack-bar in order to obtain a new hold.

The rack-bar is held against outward move- 5 5 ment by an inclined rectangular pawl 9, pivoted at the inner or upper ends of its sides, .which are provided with eyes, by a bolt 10 to the casing and arranged on the outer faces of the sides of the latter. The pawl 9 is retained 6c in engagement with the teeth of the rack-bar by a spring 11, and is forced out of such engagement to allow the rack-bar to be moved freely outward, or in either direction Without the aid of the operating levers, by a cam lever 6 5 13, fulcrumed on the casing, and arranged to engage the pawl adjacent to the outer end of the same. The spring 11 is a flatone secured at one end to the casing and bearing against a stop 14:, intermediate of its ends, and having its other end engaging the pawl. The teeth of the rack-bar are slightly oppositely-inclined, and the inclination of the pawl enables it to engage the teeth squarely at theirouter inclined edges to prevent the rack-bar from 7 moving outward; but the inner inclined edges of the teeth are adapted to move the pawl outward sufficiently to allow the teeth to pass under the same when the rack-bar is moved inward by the operating levers. The rackbar is provided with a longitudinal opening 15 and is guided in its movements longitudinally by a block 16, arranged between the sides of the casing on a bolt 19, and the said bolt 10. The outer end of the rack-bar and the opposite end of the casing are provided with clevis-loops '20 and 21, for the reception of chains to enable the lifting device to be suspended from a supporting frame 22, as illustrated in Fig. 1 of the accompanying or: drawings, and to be connected to a stump or other heavy body to be lifted.

The supporting frame is preferably in the form of a tripod,- and in lifting a load or extracting a stump the rack-bar is drawn out 5 from the casing and depends therefrom, whereby a downward movement of the operating lovers will lift the rack-bar and move the same inward into the casing.

The rack-bar may be connected with a fence mo wire for drawing the latter to the desired tension; and one end of the casing is provided with a foot piece 23 adapted to rest upon the ground or other support to enable the device to be employed as a lifting jack for vehicles. In using the device for a lifting jack the rackbar is placed beneath an axle and it is moved upward and outward by the operating levers to lift the adjacent wheel clear of the ground.

Where great strength is required, when the device is employed in connection with heavy objects of any character, supplemental levers 24 may be employed to increase the length of the operating levers. The supplemental levers or bars 24 are provided at their inner ends with loops 25 to receive the operating levers to detachably connect the supplemental bars or levers to the same.

It will be readily apparent that the lifting device is simple and comparatively inexpensive in construction, that it is strong and durable, and that it may be readily applied to a variety of uses, such as for extractingstumps, lifting heavy obj ects,stretchin g wires, serving as a wagon jack, and the like.

WVhat I claim is 1. In a lifting device, the combination of a casing provided with lateral extensions having trefoil-shaped bearing-openings consisting of triangularly-arranged recesses, a longitudinally-movable rack-bar provided at its sides with teeth and slidingly mounted in the casing, and the operating levers journaled in the bearing-openings and provided with seg mental heads having teeth meshing with those of the rack-bar, substantially as described.

2. In a lifting device, the combination of a casing, a rack-bar slidingly mounted in the casing and provided with teeth, an operating lever journaled on the casing and having a segmental head provided with teeth engaging the rack-bar, an inclined rectangular pawl pivoted to the casing and engaging the teeth of the rack-bar, a spring for holding the pawl in such engagement, and a cam lever fulcrumed on the casing and arranged to engage the pawl to move the latter outward, substantially as described.

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

HENRY HAGELSTEIN.

Witnesses:

OSCAR RUFFINI, O. L. BROOME.

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