US1007776A - Derrick. - Google Patents

Description

E. EREVIGK.

DERRICK.

APPLICATION FILED MAY 4, 1911. 1,007,776. Patented Nov.'?, 1911.

2 SHEETS-SHEET 1.

coLuMBm PLANOGRAI'II co wAsHmli'roN. u. C

E. EREVICK.

DERRICK.

APPLICATION FILED MAY 4, 1911.

1,007,776. Patented Nov. 7, 1911.

2 SHEETSSHEET 2.

EINER EREVICK, 0F CLARKFIELD, MINNESOTA.

DERRICK.

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Specification of Letters Patent.

Application filed May 4, 1911.

Patented Nov. '7, 1911.

Serial No. 624,928.

To all whom it may concern:

Be it known that I, Emnn Ennvron, a subject of the King of Norway, residing at Clarkfield, in the county of Yellow Medicine and State of Minnesota, have invented certain new and useful Improvements in Derricks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide an improved derrick, especially adapted for use in lifting wagon boxes and racks.

To the above ends, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

In the accompanying drawings which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a view of the improved device in side elevation, some parts being broken away, and the exposed parts in section, and with other parts illustrated by dotted lines; Fig. 2 is a plan view of the same; Fig. 3 is a detail view, on an enlarged scale, of a portion of the lower end of the device, some parts being broken away and the exposed parts shown in section; and, Fig. 4 is a detail view, on an enlarged scale, of one of the socalled grapples.

The numeral 1 indicates a base support for the improved device, and is preferably made up of a pair of crossed timbers having secured, at their extreme outer portions, castings 2 and which castings, in turn, are secured to any suitable support, not shown, by means of bolts, or otherwise. Secured to the upper surface of the base 1, by means of screws, or otherwise, is a casting 3 having an upwardly projecting stud 4 on which is telescoped the lower end of an upwardly projecting column 5, preferably, as shown, in the form of a pipe. The column 5 is secured on the central casting 3 in an upright position by means of a plurality of upwardly and inwardly projecting brace rods 6. These brace rods, at their upper ends, are secured to the column 5 by means of a collar 7 and their lower ends are secured to the end castings 2. Secured to each end casting 2 is a hanger bracket 8 and which brackets support and hold an annular anchoring track 9, the piirpose of which will presently appear. Swiveled to the upper end of the column 5, is a bifurcated fulcrum-head 10, having a depending stem 11 working within the column 5. A horizontally extended channel shaped bracket 12 is pivoted to the prongs of the fulcrum-head 10 by means of a pivot pin 13. Mounted on the bracket .12, between its side flanges, is a long lever 14 in the form of a beam. This lever 14 is secured to the bracket 12 for endwise adjustment by means of a pair of nutted bolts 15 secured to the bracket 12 and passed through any one pair of a series of holes 16 formed in the lever 14. Depending hooks 17 and and 18 are secured one to each end of the lever 14. To the hook 17 is secured a multiplicity of depending chains 19, as shown, four in number, each having secured to its lower end a grapple 20. Each of these grapples 20 is provided with an in-turned and upwardly projecting serrated lifting edge, which is made adjustable in different vertical positions by lengthening and shortening the chains 19. The adjustment of the chains 19 is accomplished by passing their free ends through eyes formed in the grapple hooks 20 and providing the same with hooks 21 that are engageable with any one of the links of the chains 19. For the purpose of illustrating the grapples 20 in operative positions, a wagon body has been indicated by means of dotted lines with the grapples supporting the same at its ends and sides.

The lever 14 is operated by means of a lifting device, preferably, as shown, in the form of a block and tackle such as is commonly used for stretching wire, said device being self-locking at any point. The lifting device is indicated as an entirety by the numeral 22 and it is not thought necessary for the purpose of this case to describe the same in detail as its operation is well known. The lifting device 22 is suspended from a hook 18 of the lever 14 by means of a link and its lower end is connected to a wheel bracket 23 on which is journaled a flanged wheel 24 mounted to run upon the underside of the track 9 and acts as a movable anchor for the lifting device. After a load has been lifted by the grapples to any desired height, it may be swung into a different horizontal position by rotating the lever 14 with respect to the column 5. As the lever 14 is rotated, the flanged wheel 24 will travel on the track 9, thereby always keeping the pulling device directly under the lever 14.

The above device, While extremely simple, is thought to be highly eflicient for the purposes had in view.

What I claim is:

1. In a device of the kind described, the combination with a column having an annular track section, of a lever of the first class pivoted and swiveled to said column and having at one end a grapple, a grooved wheel adapted to run upon said track and detachably seated thereon, a bracket secured to said wheel, and a pulling device connecting the other end of said lever to said wheel bracket, substantially as described.

2. In a device of the kind described, the

combination with a column having a sup;

porting base, radially projecting brackets secured to said supporting base, and an annular track section secured to anddepending from said brackets, of a lever of the first class plvoted and swiveled to said column and having at one end a grapple, a grooved wheel adapted to run upon said track and detachably seated thereon, a bracket secured to said wheel, and a pulling device connecting the other end of said lever to said wheel bracket, substantially as described.

3. In a device of the kind described, the combination with a column having an annular track section, of a head rotatively mounted in the upper end of said column, a bracket pivotally connected to said head, a lever of the first class secured to said bracket for longitudinal adjustment and having at one end a grapple, a grooved wheel adapted to run upon said track and having a bracket, and a pulling device connecting the other end of said lever to said wheel bracket, substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

' EINER EREVIGK.

lVitnesses:

JACOB AMUNnsoN, Lnwrs MoNsnN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

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