US1579539A - Hoisting device - Google Patents

Description

April 6 1926. 7 v 1,579,539

M. ITJEN ET AL HOTSTING DEVICE Filed 001;. 22, 1925 @lm M4,\

Juan-0 GEORGE TONY RAPUZZI, citizens ofthe United 'States, residing at Skagway, Alaska, have invented certain new and useful Improve- I the forward end of the lifting lever, the.

Patented Apr. 6, 1926.

- UNITED STAT MARTIN ITJEN'AND GEORGE TONY RAriIz zI, or SKAGWAY, ALASKA.

'I-IOISTING DEVICE.

To (tail/limit it may concern:

Be it known that we, MARTIN I'IJEN and 0 lifting means is disposed in an operative po- 2 V sition. A V

A further object is-to provide a hoisting device of. the above mentioned character which is simple in construction, inexpensive, strong and durable and further well adapted to the purpose for which it is designed. I

Otherobjects and advantages ofthe in 'vention will be come apparent during the course of the following description taken in connection with the accompanying-drawing.

In the accompanying drawing forming a part of this application and in which like numerals designate like parts throughout the same: v

Figure 1 is a side elevation of the device embodying our invention showing the manner in which the same is used.

Figure 2 is a detail perspective View of clevis pivotally. suspended therefrom, and the locking link, and I Figure 3 is a detail enlarged perspective of the upper end of the load supporting chain showing, the locking link associated therewith. I

In the drawing, wherein for the purpose of illustration is shown the preferred embodiment of our invention, the numeral 1 designates an'elo-ngated lever, the forward end of which is provided with the downwardly disposed claw2 which is adapted for engagement with the link of a suitable chain 3 which is suspended from a stationary support 4 at its upper end. A The purpose of this claw will be hereinafter more fully described. a

A substantially U-sha-ped clevis 5 is pivto improvements in and the free end of the chain Application filed October 22, 1925. Serial No. 64,197.

otally suspended from the lever 1 .ata point adjacentthe claw 2, and to this end there is provided a bolt 6 which extends transversely through the forward portion of 60.

the-lever and through the upper free ends of the arms of'the U-shaped clevis. A suitable wing nut 7 is associated with the threaded end of the bolt-in the manner clearly shown in Figure 2.

This clevis extends through an enlarged link 8 which forms the uppermost link of the load supporting chain 9 the latter having a hook 10 associated with the lower end thereof for engagement with the article or object 0 to belifted or hoisted. An extension in the form; of an arm '11 is formed on the 'upper end of this enlarged link 8 and said extension is disposed between the arms of the U-shaped clevis- 5, as clearly shown in Figure 2.

An additional enlargedxlink. 12 has its ink her end reduced or restricted to providela neck portion 13, the purpose 'of which will be presently apparent' This last mentioned link is termed forthe purpose of convenience, a locking link; The locking link is'secured to the upper end of the extension orarm 11 in any suitable manner so as' to cause the. locking link to be 'dispo-sedat substantially right angles to the enlarged link 8 and as is further illustrated in the drawing, *the arms'or. sides of the locking link are 'disposed in a horizontal plane. The locking link is furthermore offset at the juncture of the neck portion 13 with'the main body por- 'tion of the link, as illustrated, at 14. This locking link has its neck portion disposed betweenthe arms'of the U-shapedclevi's 5 and the major portion of said locking link 7 forward end of the elongated lever l'for cooperation therewith in the manner toxbe V is disposed below the claw 2 formed on the presently described.

In use, the hook, of the load supporting chainv 9 is securedto the object to be lifted, in the present instance noted by the letter A, 3 extends through the outwardly disposed portion of the link 12. In order to lift the load, the free end of the chain 3 is moved inwardly so as to cause one of the links thereof to be 7 disposed within the neck portion 13, and when in this position the free end of the lever 1 isswun downwardl so as to cause the forward en ofthe lever aving the claw 2 formed thereon to be raised; This will permit the claw to move upwardly on the the lifting means and easily brought into operative position.

"he used for tightening and we do not wish to limit ourselves to the particular use tor which the device 1s and permit the load toagain he raised a slight distance.

'In this rniner, a step by step arrangement is provided for raising a load, and provision oi a hoisting device of the above mentioned character wiil prevent any possi hility of the load being accidentally dropped after it has been raised,'the n'ieans for holdingthe load'in a suspended position while is actuated, being readily A device of this character may not only be used as a hoisting device, but may also chains, or as a binder,

adapted.

While we have shown the preferred emhodiment'o't our invention it is to be understood that minor changes in the size, shape and arrangementof parts maybe resorted to withoutvdeparting from the spirit of the invention and the scope of the appended claims.

Having thus described the inventlon, what we claim as new 'is 1. A hoisting device of the class described comprising a lever, a claw formed on the forwardend'thereot vand adapted for engagement with a chain suspended from a stationary support, a cievis pivotally suspended t'rom the forward portion of the lever, a load supporting chain having its upper end suspended from the clevis, and a locking link having its inner endsecured to the uppermost link of ;aid load supporting chain, the free end of the first mentioned chain being adapted to extend through said link, the inner end of the linkbeing provided with a restricted neck portion for cooperation with the link of the first mentioned chain in supporting the load in a suspended position while the claw on the lever is moved upwardly on the first mentioned chain to engage-an upper link,-said first mentioned chain being adaptcdito'he disengaged from said restricted neck portion when the claw has-been moved upwardly to facilitate furtherraising oit theload.

A hoisting device of: the class described comprising a lever, a chain engaging claw termed on the forward end thereof,-a-substantialiy U-shaped clevi-s having the free ends of the arms thereof pivotally securedto the opposed sides of the forward portionof the l ver, a load supporting chainhaving its uppermost link extending through the crown portion of the clevis, an arm extending upwardly from the upper end of the upper most link oi said load supporting chain, a locking link through which the freeend of the last mentioned chain is adapted to ex tend, the inner end of said locking link being provided with a reduced neckportion for cooperation with a link of the first 'mentioned chain, the inner'end of said locking link being secured to the upper endof said arm, said'elaw adapted to he .inoved upwardly on :the lirstmentioned chain when the links of the chain are held in locked engagement with therestricted neck portion of the lockinglink to-perinit-the claw to enan upper link andenable the lever to be actuated whereby-to further raise the load. I

In testimony whereof we have affixedlour signatures.

MARTIN :ITJEN. GEORGE TONY JRAPUZZI.

Images