US1543686A - Hoist - Google Patents

Description

Julie 30, 1925. 1,543,686

F. W. WENGRAF HOIST Original Filed Jan. 1920 Patented June 39, 1925.

UNITED STATES PATENT FREDERICK W. WENGRAF, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO WIL'HELMINE WENGRAF, OF CHICAGO, ILLINQIS.

Application filed January 2, 1920, Serial No. 348,929. Renewed November 22, 1924.

To all whom it may concern:

Be it known that I, FREDERICK, IV. W'nm GRAF, a citizen of the United States, and residing at New Haven, county of New Haven, and State of Connecticut, have made a certain new and useful Invention in I-Ioists, of which the following is a specification.

This invention relates to hoists and particularly to such hoists as are employed in garages, machlne shops or the like for re- 7 tive arrangement of parts, all as will be more fully hereinafter set forth, as shown by the accompanying drawings, and finally pointed out in the appended claims.

Referring to the drawings Figure 1 is a view in front elevation of a structure embodying my invention.

Figure 2 is a sectional view on the line 2-2 of Figure 1, looking in the direction of the arrows.

Figure 3 is a front view, partially in section, of the top point of the hoist support;

Figure 4 is a sectional view taken on the line 44 of Figure 3, looking in the direction of the arrows.

The same part is designated by the same reference numeral wherever it appears through the several views.

It is among the special purposes of my present invention to provide a hoisting structure ofbut few parts which may be set up readily and quickly at any place where it is desired to lift a heavy object or piece of machinery. While its use .is particularly adaptable for lifting the explosion engines or motors from the chassis frame of automobiles, I do not desire to be limited or restricted in this respect.

In accordance with my invention I provide two, what I call seat joints 1 and 2, each of which is provided with angularly disposed recesses 3 adapted to receive therein vertically extending rods 4. The recesses 3 may be disposed in any suitable angle relative to each other. A horizontal bar 5 is received in a recess 6 in the seat joints 1 and 2. The horizontal bar 5 may be loosely received in the recess 6 of the seat joints 1 and 2, or it may be screwed therein as illustrated in Figure 3, wherein the recess 6 is provided wvith interior threads adapted to cooperate with exterior threads on the end of the horizontal bar v5. By properly proportioning the respective sizes of the vertical rods 4 and the recesses 3 in the seat joints 1 and 2, a limited degree of adjustment is secured between the vertical rods 4 at each end of the horizontal bar 5. To lend strength and rigidity to the structure and to lock the respective arms 4 in their adjusted position, I provide collars 7 on the horizontal bar 5 which are slidable adjustable therein and are connected by means of levers 8 to collars 9 which are slidable adjustable on the vertical rods 4. The hoist proper is supported by a rod 10, the ends of which pass preferably angular-1y through the seating joints 1 and 2, as illustrated in Figures 1 and 3 and are secured thereto by means of nuts 11. Any form of hoist may be employed in connection with the support thus far described and for convenience sake I have merely shown diagrammatically such a hoist 12 provided with a hook 13 which is removably secured to the rod 10.

To provide self adjustment of the hoist on uneven ground and to prevent sliding of the vertical rods 4 on the surface of the ground, I provide at the lower ends of said rods feet 13dpivotally carried by the lower end of the ro s.

A further feature of my invention is to provide means for detachably locking the vertical members 4 in the seat joints 1 and 2. While this may be accomplished in any number of ways I have shown one simple arrangement, to which, however, I do not wish to be limited or restricted, wherein the top end of the rod members 4, as shown in Figures 3 and 4, is rounded, and a short distance below the end thereof is provided with a depression or annular recess. On the outer surface of the seating joints 1 and 2, I secure a spring actuated dog 14 with the projection 15 thereof normally extending through the wall of the joint into the recess 3 thereof. By this arrangement it will be seen that when the rods 4 are inserted in their recess 3 in the joints, the rounded end of the rod will force the dog and spring and 15 outwardly until the recess or depression in the rod 4: comes opposite the dog 15, thereupon the dog 15 seats in the recess and locks the rods in their position. The spring 14 may be provided with a suitable handle or knob to permit the plunger to be withdrawn from the recess of the rodl when it is desired to disassemble the hoist support.

5 Many modifications and changes will readily occur tothose skilled in the art without departing from the spirit and scopeof my invention as defined in the claims, there fore what I claim as new and useful and of my own invention and .desire to secure by 7 Letters Patent is 1. The combination with a horizontal member, of joint members carried by the ends thereof and having downwardly extending angularly disposed recesses therein,

supporting rods adapted to have their. free ends seated in said recesses, collars slidably mounted on said horizontal member and said rods, means for locking said collars against movement, and ties pivotally connected atone end to said rod collars'and at their other end to the collar on'the hori- Zontal member, and means for supporting a hoisting device between said joint members.

2. In a hoisting support, a main horizontal bar, a sea-t joint for each end of said bar, and having a threaded socket into which each end of said main bar is adjustably held,

said seat joints being also provided with sockets disposed at an angle to each other and at right angles 'to said threaded socket, vertical standards fitting into said sockets, spring clips for holding said standards in said sockets, and a depending tie bar fastened into said seat joints for slidablyholding a hoisting element.

3. A seat joint for detachably holding a frame work, comprising a solid block mem- FREDERICK W. VENGRAF.

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