US1551763A

US1551763A - Wrench

Info

Publication number: US1551763A
Application number: US691175A
Authority: US
Inventors: Raymond C Morris
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-02-07
Filing date: 1924-02-07
Publication date: 1925-09-01
Anticipated expiration: 1942-09-01

Description

Se t. 1, 1925; 1,551,763

R. C. MORRIS WRENCH Filed Feb. 7. 1924 IN V/z'N TOR fay/77040 C Nor/v3 i X A TTORNE m Patented Sept. 1 1925.

RAYMOND C. MORRIS, OF KALAIAZOO, MICHIGAN.

' wanton.

Application fled February 7, 1924. Serial No. 691,175.

To all whom it may concern: I

Be it known that I, RAYMOND C. MORRIS, a citizen of the United States, residing at the city and county of Kalamazoo, State of Michigan, have invented certain new and useful Improvements in Wrenches, of which the following is aspecification.

This invention relates to improvements in wrenches.

The main object of this invention is to provide a wrench which is very effective in Y its gripping action and which may be used either as a pipewrench or as a nut and bolt wrench.

A further object is to provide a wrench embodying these advantages which is very simple and economical in structure and at the same time strong and durable.

Further 'objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodi ment of my invention is clearly illustrated in the accompanying drawing, forming a part of this application, in which:

Fig. I is a side view of my'improved wrench.

Fig. II is a detail section on a line corresponding to line 22 of Figs. I and III.

Fig. III is a detail view partially in section on a line corresponding to line 3-3 of Fig. II. I

In the drawing similar reference characters refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawing, my improved wrench comprises a handle 1 having an integral head 2 and fixed jaw 3, the jaw, in the structure illustrated, being disposed longitudinally of the handle.

The head 2 is provided with a dove-tailed way 4 for the slide portion 5 of the movable jaw 6. This slide portion 5 is provided with a rack 5, the nut 7 being supported in the transverse slot 8 in the head 6 by means of the pivot pin 9.

The movable jaw 6 has a slot 10 therein adapted to receive the flat shank 11 of the gripping member 12, the gripping member being retained in theslot' by the pivot 13 and having a curved bearing surface 14 coacting with the bottom of the slot, as shown in.

Fig. III, This relieves the action.

The face 15 of the gripping member is preferably curved and toothed, the teeth facing outwardly. The fixed jaw has a toothed face 16.

The, ivot.13 is disposed eccentrically so that w en the gripping member is swung rearwardly, it is carried toward the fixed aw.

A spring 17 is seated in the slot of the movable jaw, the gripping member 12 being shouldered at 18 and cut away adjacent the shoulder to provide a notched portion in the shank of the gripping member to receive the spring 17 which engagesthe' shoulder pinof shearing 18, (see Fig. III) so that the gripping mem-.

ber is normally held in its forward position and when engaged with a piece of work the swinging of the handle swings the gripping member on its pivot thusmore effectively clamping the work and avoiding the necessity ,of accurate adjustment of the movable aw.

My improved wrench is very simple and economical-to manufacture, is eflic'ient and at the same time strong and durable in proportion to the amount of material entering into the same.

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

1. A wrench com rising a handle having a head provided wit a fixed jaw, a movable jaw slidably mounted on said head, said movable jaw being slotted, a gripping member for said movable jaw having a notched shank portion embraced in and pivotally secured in said slot, the pivot axis of said gripping member being disposed eccentrically so that when the gripping member is swung rearwardly it-is moved toward the coacting fixed jaw, and a spring seated and completely encased in said slot reacting in the notch of said shank to hold said gripping member yieldingly forward. V

2. A wrench comprising a handle provided with a fixed- -jaw, a' movable jaw having a bearing recess therein, a gripping member for said movable jaw having a shank portion pivotally disposed in said recess, a spring seated in said recess at the inside of said shank portion having a shoulder at its said grlpping member to ooaet with the 10 inner side and acurved bearin in bearing shoulder thereof whereby said gripping engagement with the bottom 0 the recess, member is he ld yieldingly forward.

"'the pivot axis for said gripping member be- In witness whereof; 1'.- have hereunto set ing eccentrically disposed so that when the my hand. gripping member is swung reargwardly it-is Y moved toward the coacting fixed jaw, and RAYMOND C. MORRIS.