US2748636A

US2748636A - Gripping device having a pivoted actuating handle

Info

Publication number: US2748636A
Application number: US368948A
Authority: US
Inventors: Lewis L Busby
Original assignee: Individual
Current assignee: Individual
Priority date: 1953-07-20
Filing date: 1953-07-20
Publication date: 1956-06-05
Anticipated expiration: 1973-06-05

Description

L. L. BUSBY June 5,, 1956 GRIPPING DEVICE HAVING A PIVOTED ACTUATING HANDLE Filed July 20, 1953 2 BY D 2,748,636 GRIPPING DEVICE HAVING A PIVOTED ACTUATING HANDLE Lewis L. Bushy, Bremerton, Wash. Application July 20, 1953, Serial No. 368,948 1 Claim. (Cl. 81-3) This invention relates to the broad class of tools and more particularly to a gripping device.

An object of the invention lies in the provision of a gripping device having clamping jaws movable toward and away from each other in a common plane and actuated by swinging a pivoted lever handle; the jaws being adapted to be applied to articles having dimensions covering a wide range without adjustment of the device, and being especially designed for removing seals from the bungs of barrels, though it is not restricted to such use; said gripping device having a novel lever and linkage assembly constructed and arranged so that a swinging movement of the handle adjusts the clamping jaws to the object to be clamped and continuation of the handle movement accomplishes the work.

This and other objects of the invention will become apparent during the course of the following description.

In the accompanying drawings, forming a part of this specification, and in which like numerals are employed to designate like parts,

Figure 1 is a side elevation of the improved tool having parts broken away for convenience of illustration;

Figure 2 is a view in elevation looking toward the open jaws of the tool;

Figure 3 is a vertical cross section taken at line 3-3 of Figure 1; and

Figure 4 is a fragmentary side elevation of a tool having a modified gripping face.

Referring now more particularly to the drawings, 1 have disclosed my invention as having a pair of opposed upper and lower elongated jaws 10 and 11. Upper jaw 10 is provided with the bifurcated rear end, as indicated by the numeral 12 and a transversely enlarged head 13 having an arcuate gripping face of substantially 180 degrees of a cylinder 14 provided with serrations constituting transversely extending teeth 15 covering the full face. The mean of the arcuately disposed teeth is substantially parallel with the longitudinal axis of the jaw 10.

The lower jaw 11 is provided with a disc-shaped rear end portion 16 and this is disposed within the bifurcation 12 and a pivot pin 17 extending transversely through the rear ends of the upper and lower jaws 10 and 11 pivotally unites the jaws on their longitudinal axes intersection. At its outer free end the lower jaw 11 is provided with a transversely enlarged head 18 and this head is provided with a planar gripping face 19 having transversely extending serrations or teeth 20. The plane of the gripping face 19 intersects the longitudinal axis of the lower jaw 11 at an exterior angle of about 45". It is thus apparent that the upper and lower jaws 10 and 11 are pivotally united at their rear ends for movement in a common plane toward and away from each other.

Intermediate its length the lower jaw 11 is pivotally secured in the bifurcated forward end 21 of the lever handle 22. This pivotal mounting is accomplished by extending a pin 23 through the ears of the bifurcation 21 at their free ends and through the body of the jaw 11 on an axis spaced from its gripping face 19.

With the structure thus far described, the upper jaw 10 is free and pivotal movement with relation to the lower jaw 11 is permitted. However, to adapt the upper jaw 10 for relative movement with the lower jaw 11, I have provided a pair of

links

24, 24 disposed at each side of the upper jaw 10 and pivotally united therewith, substannite fitates Patent ice 2 tially midway its length, by means of a pivot pin 25 extending through the upper jaw 10 and having its ends secured in the upper ends of links 24. The opposed lower ends of links 24 are pivotally united to the bifurcated forward end of the handle or lever 22 by means of pivot pin 26.

Inspection of Figures 3 and 4 will reveal that the inner, upper ends of links 24 are provided with bosses 27 which space the links 24 from the side faces of the upper jaw 10 and maintain the links in parallel relation to each other. This will prevent binding of the links during use of the tool.

The lever 22 is provided at its outer end with an enlarged plug 28 which is externally threaded at 29 to cooperate with the internal threads 30 of a handle extension 31.

The handle extension 31 is. preferably tubular for providing a light weight tool and the outer end is knurled at 32 to make a suitable hand grip.

Referring to Figure 4, it will be seen that the modified form of the invention omits the arcuate gripping face 14 from the upper jaw 10 and in its place provide a planar face 33 which is disposed at an exterior angle of approximately 45 from the longitudinal axis of the jaw 10. In this particular construction it will be noted that the outermost tooth 34 is enlarged or lengthened over the other teeth or serrations 35 to permit the jaw to grip articles of small size.

While the preferred use of the tool is for removing seals from the bungs of barrels, it is not my intention to limit the use of my invention unnecessarily and therefore, I desire to secure a patent for the disclosed invention as broadly as possible, limited only by the appended claim and in view of the prior art.

Having thus described my invention, I claim:

A device of the character described comprising a pair of coplanar and opposed elongated jaws pivotally secured to each other at their rear ends for movement of their outer ends toward and away from each other about a pivot axis and in paths containing a common plane, longitudinal axes of said jaws intersecting at said pivot axis; gripping faces on the outer ends of said jaws; the gripping face of one jaw having laterally extending teeth arranged in a convex substantially are having its chord extending parallel to the longitudinal axis of said one jaw; the gripping face of the other jaw being disposed on a plane perpendicular to said common plane and intersecting the longitudinal axis of said other jaw at a substantially 45 exterior angle; a handle pivotally connected at one end to said other jaw for swinging movement in a path containing said common plane and about an axis located closer to said planar gripping face than to said pivot axis; and a link pivotally connected at one end to the handle on an axis perpendicular to said common plane and located between said one end of the handle and a free end of the handle, said link being pivotally connected at its other end to said one jaw on an axis perpendicular to said common plane and located intermediate the length of said one jaw.

References Cited in the file of this patent UNITED STATES PATENTS 444,255 Shaw Jan. 6, 1891 892,497 Barr July 7, 1908 1,029,074 Little June 11, 1912 1,099,427 Christopherson June 9, 1.914 1,174,907 Stickles et al Mar. 7, 1916 1,965,487 Carlson July 3, 1934 2,282,148 Mandi H May 5, 1942 2,520,652 Pfauser et al Aug. 29, 1950 FOREIGN PATENTS 11,593 Germany Nov. 20, 1880