US1249781A - Grab-hook and strut-puller. - Google Patents

Description

1. H'. LAND'Q GRAB HOOK AND STRUT FULLER.

APPLICATION TILED AUG.29| I917- Patented Dec. 11,1911;

WIN a r giwwmloz JOSEPH H. Lawn JOSEPH I-I. LAND, 013 TULSA, OItiCLAI-TDDTA.

GBAB-HOOK AND STRUT-FULLER.

nairavsi.

Application filed August 29, 1917.

To all whom it may concern Be it known that T, Josnrrr H. LAND, a citizen of the United States, residing at Tulsa, in the county of Tulsa and E State of 'Oklahoma, have invented certain new and useful Improvements in Grab-Hooks and titrut-lthlllers, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to an improved grab hook and strut puller, and has for its primary object to provide a device of this character which may be effectively employed for the removal of struts from concrete forms such as are commonly employed in the construction of concrete building walls.

it is another and more particular object of my invention to provide a device for the above purpose embodying an L-shaped lever member pivotally mounted on a body bar and having a grab hook on one end, and operating means mounted on the bar and operatively connected to said hook, said operating means including means movable by gravity to position to hold the hook in.

engagement with the object or in an open disengaged position.

it is also a further general object ofmy invention to provide a grab hook and strut puller which may be advantageously employed for a variety of purposes such, for instance, as fishing broken parts of drills from well holes, and in like instances where it is ordinarily a ditlicult matter to remove the part.

With the above and other objects in view, my invention consists in the novel features of construction, combination and arrangement of parts to be hereinafter more fully described, claimed, and illustrated in the accompanying drawing, in which,

Figure 1 is a side elevation of my improved grab hook and strut puller, illustrating the preferred embodiment thereof and showing the hook lever in its open position;

Fig. 2 is a similar view showing the lever closed upon a strut or other part;

Fig. 3 is a top plan view;

lFig. d is a section taken on the line f t of Fig. 1; and

Fig. 5 is a section taken on the line 55 bf l ig. 2.

lieferring in detail to the drawing, 5 designates the body bar of the device, and upon the opposite longitudinal edges of this Specification of Letters Patent.

Patented 1]., 1917. Serial No. iaasai.

bar in spaced relation toone of its ends, the laterally projecting arms 6 are formed. The ends of these arms are offset inwardly toward each other and apertured to receive a pivotbolt 7 upon which the angular lever 8 is loosely mounted at the juncture of the long arm 9 of said lever with the relatively short arm 10 thereof. The end of the long lever arm 9 is formed into a hook 11 having spaced tern'iinalspurs 12 of relativelydifferent lengths. tapurs 13 are also formed upon the end of the body bar 5 in opposed relation to the hook end of the lever, said latter spurs being arranged in spaced relation to each other both longitudinally and transversely of the bar and preferably being obliquely inclined toward the pivoted end of the lever.

14- designates the lever operating bar, one end of which is disposed between the spaced arms 6 and is slotted or bifurcated. To this bifurcated end of the operating bar, the shorter arm 10 of the lever 8 is pivotally connected at its end by means of the bolt 15. Upon one side of the bar 5, a bearingplate 1b is riveted or otherwise securely fixed and, in the same, one end of a link 17 is loosely engaged for rocking movement. A similar bearing plate 18 is also secured to the op posed face of the operating bar 14 in which the other end of said link is engaged. Wood handle bars indicated at 19, which may be of any desired length, are detach-ably secured to thcouter sides of the body bar 5 and operating bar 14 at spaced points by the bolts indicated at 20.

From the foregoing description, the operation of the device will be clearly understood. When the link 17 is disposed upon one side of the center of gravity as shown in Fig. 1, the operating bar 14 is disposed in an inclined position with respect to the body bar 5 and the lever 8 is held in an inoperative position with its hooked arm in spaced relation to the end of the body bar. l Vhen the spurred end of the body bar and the end of the lever 8 are properly disposed upon the relatively opposite sides of a strut, templet, or other spacing element of a concrete wall form, the bar 1 1 is pulled longitudinally so as to rock the link 17 in the bearing 16 and swing the lever 8 inwardly. Nhen the link 17 moves to the relatively opposite side of the center of gravity from the position shown in lFig. 1, the spurs 12 on the hook end of the lever will be engaged with the object and the bearing 14 will be disposed substantially in parallel relationto the body bar 5. The operator then exerts a pressure upon the handle members in a direction toward each other so that the spurs on the body bar-andthe pivoted lever are caused tosecurely grip the part which may then be moved or pulled out from between the spaced walls of the form. The part is easily released bysimply-reversing the movement of the bar Mto disengage the hook spurs from said part, as will be readily understood.

While my invention as above described is primarily designed for use-in the removal of struts'or spreaders and like parts from conerete forms, it is apparent that the device may also be employed in the manner of the ordinary grab hook and can be advantageously used for the removal of broken drill parts from well holes, and for various other analogous purposes. Owing to the simple and compact arrangement of the several elements, the device may be used in narrow or confined spaces. The article is also very strong and durable in its construction and may be manufactured at relatively small cost. r

1 While I have herein shown and described the preferred construction and arrangement of the several elements; it is to be understood that the same is susceptible of considerable modification and I, therefore, reserve the privilege of adopting all such legitimate changes as may be fairly embodied within the spirit and scope of the invention as claimed. I

.Having thus fully described my invention, what I desire to claim and secure by Letters Patent is:

1. A device of the character described ineluding a body bar, a lever pivotally mounted upon the body bar and having an angular arm extending upon one side of its pivot, said lever at its other end being provided with a gripping hook in opposed relation to the end of the body bar, an operating bar pivotally connected at one of its ends to the angular arm of the lever, and a link loosely connecting said operating bar intermediate of its ends to the body bar for longitudinal shifting movement with respect to the body bar, whereby the lever hook may be engaged with an object or disengaged therefrom.

2. A device of the character described ineluding a body bar having arms projecting laterally from its longitudinal edges in spaced relation to one end of the bar, a lever pivotally mounted between the ends of said arms and having a short angular arm projecting inwardly toward the body bar from the pivot, said lever at its other end terminating in a gripping hook 1' rojeeting inwardly toward the body bar. said body bar having spaced, angularly disposed gripping spurs formed thereon, an operating har pivotally connected at one of its ends to the angular arm of the lever, and a link connecting the operating bar intermediate of its ends to the body bar and movable to opposite sides of its center of gravity in the longitudinal shifting movement of the operating bar in opposite directions to maintain the lever hook in gripping engagement with an object or in an open inoperative position.

In testimony whereof I hereunto atlix my signature in the presence of two witnesses.

JOSEPH H. LAND.

Witnesses:

CHAS. T. ABBOTT, F. V. LINDER.

Qopies oi this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, I). C.

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