US1234781A - Hoisting-hook. - Google Patents

Description

L. E. LOZIER.

HOISTING HOOK.

APPLICATION FILED FEB- lll 191-5- Patented July 31, 1917;

OFFICE.

LEWIS E. LOZIER, OF NEW YORK, N. Y.

I-IOISTING-I-IOOK.

To all whom it may concern:

Be it known that I, LEWIS E. Loznnz, a citizen of the United States of America, and a resident of New York city, New York, have invented certain new and useful Improvements in Hoisting-Hooks, of which the following is a specification.

Broadly speaking, my invention relates to hooks and more particularly to that class known as hoisting hooks. The object of the invention herein disclosed is to provide a hoisting hook that will not become disengaged from the eye, swivel, or bail of eX- cavating buckets, tongs. shackles or any other mechanism that is associated with a hook of the character herein described when used for various purposes connected with the raising and lowering of structural material.

It is well recognized that there is more or less danger in the disengagement from the hook of heavy loads when used in construction work, particularly in the construction of caissons and coffer-dams and excavations, as well as in the moving of steel girders and the like for use in the erection of steel framework.

In this branch of engineering, it is necessary to properly support the walls and struts with braces to assist in withstanding the pressure thereon, such braces generally extending laterally and diagonally from wall to wall or from support to support and upon lowering a bucket or constructing material into an excavation or coffer-dam where supports are more or less necessary, there is always danger of the hoisting hooks becoming disengaged from the bucket or material by the latter coming in contact with, or coming to rest upon such supports or braces, thereby relieving the weight of the load from the hook, permitting the same to disengage itself, owing to its weight, from the material-carrying mechanism. Upon this disengagement, unless the bucket is substantially supported from its bottom, it immediately turns and falls to the bottom of the excavation scattering its load with great danger to the workmen therein.

Further details of my invention will be more specifically pointed out in the accompanying specification and drawings forming a part of this application, in which corresponding parts are designated by corre* sponding characters of reference.

Specification of Letters Patent.

Patented July 31, 1917.

Application filed February 11, 1915. Serial No. 7,616.

Figure 1 is a side elevation of my invention showing an adjustable sleeve/in closed posltlon.

Fig.2 is a perspective view of the sleeve. Fig. 3 is an enlarged view, partly in section, showing the locking mechanism carried by the sleeve.

My invention comprises a shank portion 1,'for1ned with a flat internal face 2, and tapering intoa thin outer edge 3, the shank being rounded at its lower end into a hook portion 4, and an upstanding ear 5, which terminates in a fiat beveled end indicated at 6, the mass of material being so proportioned that the upper end of the shank is of substantial thickness and gradually in creases toward the base of the hook to resist the tensile strain upon the hook which 1s greatest at this point.

Formed integrally with the upper end of the shank l and projecting outwardly and downwardly therefrom is the leg 7 comprising the horizontal portion 8 and the depending portion 9, such last named, portion terminating in a fiat beveled end 10, the face of which is parallel to the face of the beveled end 6 of the upstanding ear 5. By preference the upstanding ear 5 and the depending portion 9 of the leg should be of the same thickness and in alinement with each other.

Substantially at the junction of the leg 7 and the upper end of the shank 1 is an enlargement 11 having formed therein an eye 12 to which the cable or shackle may be attached; however, I do not wish to limit myself to such construction, as it may be advisable to form a swivel connection or the like in the hook.

Carried by the leg 7 and adapted to contact with the ear 5 is a sleeve comprising two halves 14 and 15 pivoted together as at 16, and having an internal diameter slightly larger than the diameter of the lug 7, and thereby to permit a sliding movement thereon. The two halves of the sleeves are adapted to unite by means of bolts 13 or the like after the sleeve has been placed in position around the depending leg 7 Formed on the outer half of the sleeve are lugs or projections 17, pivotally carried between which is the spring-pressed locking pawl 18, one end of which. projects in wardly as at 19 through an opening 20 in r 7 formed into ahead for depression.

Formed in the depending leg 9 are suit able recesses 21, 22, adapted to receive the mwardlyprojecting nose 19 of the springpressed pawl pivotally carried by the sleeve.

These recesses are so positioned that upon upward or downward movement of the sleeve to either open or close the opening in the hook the nose 19 of the pawl will enter the recesses thereby locking the sleeve in either of the two positions as shown in full and dotted lines in Fig. 1. V

In the closed position, as shown in Fig. 3, the lower end of the sleeve engages the upper end of the ear 5, which is of substan tially the same diameter as the leg 7, thereby rigidly closing the opening in the hook and preventing the disengagement: of the link from the hook when the same is inserted in the opening between the ends 10 5 and 6.

Having thus described my invention what I claim is, V V

A hoisting hook of the; character described comprising a shank, a hook port on terminating in anupstanding ear, a leg por- V i LEWIS E. LOZIERL Witnesses JOHN P. BROWN, ALBERT J. RICE.

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

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