US1264895A

US1264895A - Wrench.

Info

Publication number: US1264895A
Application number: US9865316A
Authority: US
Inventors: Allan G Carmichael
Original assignee: Individual
Current assignee: Individual
Priority date: 1916-05-19
Filing date: 1916-05-19
Publication date: 1918-05-07
Anticipated expiration: 1935-05-07

Description

A. G. CARWHCHAEL.

wnmcm AFFLICATION men WIAYIQ. 1916.. v 1 i i Patented May 7, L918.

. I )1 a $HEETS-SHEET 1. 5

A. G. CARMICHAEL.

WRENCH.

APPLICATION FILED MAY 19. ms.

Rammed May 7, i918.

3 SHEETS-SHEET 2.

A. G. OARIVHCHAEV...

WRENCH.

APPLICATION FILED MAY 19. ms.

Patented. May 7, 1918;

3 SHEETSSHEET 3.

tit)

ATLLM a. cnrcann, or Kennett, orrrane.

To all whom it may concern:

Be it known that I, ALLAN G. CAR- MICHAEL, a citizen of the United States, residing at Kendall, in the county of Fergus and State of Montana, have invented certain new and useful Improvements in Wrenches; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to improvements in wrenches.

The object of the present invention is to improve the construction of wrenches and to provide a simple, practical and comparatively inexpensive wrench of strong and durable construction adapted to be readily converted into a pipe wrench or a nut wrench and capable of a rapid adjustment to engage the jaws with the object to be operated on.

A further object of the invention is to provide a wrench of this character adapted to eliminate teeth and threads for eflecting an adjustment of the sliding jaw in the seating movement thereof.

It is also an object of the invention to provide a light and compact structure having detachable and renewal parts adapted to be stamped or otherwise formed of sheet metal.

With these and other objects in View the invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings and pointed out in theclaim hereto appended, it being understoodthatvarious changes in the form, proportion and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawings- [Figure 1 is a side elevation of a wrench constructed in accordance with this invention and arranged for operating on nuts and the like,

Fig. 2 is a longitudinal sectional view of t ew. r

F g. 3 IS a transverse sectional-view on v I the line 33 of Fig. 2,

Specification of Letters Patent.

Application filed may 19, 1918. Serial Ito. 98,653.

Patented May t, 1%.

Fig. 6 is a transverse sectional view on the line 66 of Fig. 2, Fig. 7 is a detail perspective view illustrating the construction of the pipe engaging jaw,

Fig. 8 is a side elevation partly in section illustrating a modification of the invention, in which the sliding jaw is laterally movable,

Fig. 9 is a side elevation of the same,

Fig. 10 is a transverse sectional view on the, line 10-10 of Fig. 9,

Fig. 11 is a similar view on the line 11--11 of Fig. 8,

Fig. 12 is a side elevation partly in section of a wrench showing another form of the invention,

Fig. 13 is a transverse sectional view on the line 13--13 of Fig. 12,

Fig. 14 is a rear end elevation.

Like numerals of reference designate corresponding parts in the several figures of the drawings.

Referring more particularly to Figs. 1 to 7 inclusive of the drawings, 1 designates a shank or bar provided at its outer end with a transversely disposed integral arm 2 constituting the body portion of an outer stationary jaw and receiving a shell or casing 3 stamped or otherwise termed of any suitable material and composed of sides 4: and a connecting web or portion 5 located at the inner side edge of the laterally extending arm or portion 2 and forming the engaging face or portion of the stationary jaw as clearly illustrated in Fig. 2 of the drawings.

The sides 4 of the shell conform to the configuration of the extension or body portion 2 which is tapered and which is provided with a perforation 6 for the reception of a screw 7 which secures the shell or casing on the arm or laterally extending portion 2 of the shank or bar 1.

The shank or bar 1 is provided with a longitudinal slot 8 and the slotted portion receives a slidable jaw comprising a shell or casing 9 and a solid body portion 10. The shell or casing which is constructed of sheet metal or other suitable material is composed of spaced sides 11 and a connecting web or back portion 12 as clearly illustrated in Fig. 6 of the drawings. The body portion 10 which is tapered to conform to the configuration of the tapered outer or front portion 13 of the side is secured between the same by a screw 14 or other suitable fastening means and it is provided with an engaging portion 15 extending laterally and fitting against the adjacent side edges of the projecting tapered portions 13' as clearly illustrated in Fig. 4 of the drawings.

The sliding jaw is retained on the slotted portion of the shank or bar 1 by a screw 16 which has a smooth portion 17 operating in the slot 8 and of substantially the diameter ofthe same and-the slot and constituting a pivot on which the sliding jaw is adapted to turn slightly to engage the front and rear edges of the shank or bar 1 at diagonally opposite points whereby the binding action of the sliding jaw on the said shank or bar will effectively hold the sliding jaw in its adjustment when pressure is applied to the wrenchthrough engagement with an object. The opening formed byspacing the body portion 10 from the rear connecting portion or web 12 is of slightly greater width than the width of the shank or bar to allow for the limited pivotal movement to engage the jaw with and disengage the same from the said shank or bar and resilient means is preferably provided for preventing the sliding jaw from accidentaly slipping. This resilient means may consist of a spring 18 interposed between the rear edge of the shank or bar and the web or connecting portion 12 or a spring washer as hereinafter explained may be employed for this purpose. The spring is located in rear of an outer engaging portion 19 adapted to engage against the rear end of the shank l and forming a recess to receive and house the spring 18. The pivot screw 16 is readily removable to enable the sliding jaw to be detached and a sliding jaw 19 having a curved serrated or toothed face 20 may be substituted for the nut engaging sliding jaw to convert the wrench into a pipe wrench for engaging pipes and rods and the like.

In Figs. 8 to 11 inclusive is illustrated another form of the invention in which the shank or bar 21 is provided at a point intermediate of its ends with an integral slotted portion or arm 22 receiving a sliding jaw 23.

The shank or bar is provided at its outer or front end with astationary jaw consisting of an integral projecting portion. 24 and a shell 25 of sheet metal or other suitable material stamped to form two sides, and a connecting back or web portion as clearly illustrated in Fig. 11 of the drawings- The sliding jaw 23 also consists of a shell of sheet metal or other suitable material composed of spaced sides and a connecting web and provided with a body. portion 26 forming the engaging face of the sliding jaw. and detachably secured between the sides thereof by a screw 27 or other suitable fastening device. The shell of the fixed or stationary jaw is secured to the shank or bar 21 by

screws

28 and 29 and the sliding jaw is equipped with a pivot 30 operating in the slot 31 of the lateral extension 22 to permit the sliding jaw to engage the opposite sides of the said extension or arm 22. By engaging the arm at opposite points a firm gripping action of the jaw is obtained like the sliding jaw of the form of the invention illustrated in Figs. 1 to 7 inclusive. In order to enable the sliding jaw to engage the lateral extension or slotted portion 22 at the rear end thereof, the said sliding jaw is preferably provided with a block 32 secured between the-sides of the shell by a screw 33 or other suitable fastening means but the block may be omitted and any other suitable means may of course be provided for this purpose. The sliding jaw, which is manually adjustable, is prevented from accidentally slipping by a spring washer 34 mounted on the pivot 30 and interposed between the shell or casing and the head of the pivot or screw. \Vhen the wrench is engaged with an object, the gripping action of the slidable jaw and its shell or casing on the bar or portion 22 will hold the parts against relative movement.

In Figs. 12 to 14 inclusive of the drawings is illustrated another form of the invention which comprises a shank 35 provided at the outer end with an integral relatively fixed jaw 36 having teeth 37 preferably arranged in a curved series and adapted to engage a pipe or rod. The shank 35 slidably receives a shell or casing composed of sides 38 and a rear connecting portion 39 which is provided with a transversely disposed engaging portion 40 similar to the engaging portion 19 and forming a recess for the reception of a spring 41. The spring 41 which is similar in construction to the spring 18'is interposed between the rear connecting portion 39 of the shell or casing and the rear edge of the shank 35. The shank 35 is provided with a longitudinal slot 42 through which passes a screw 43 or other suitable pivot, and the sides of the shell or casing extend beyond the front edge of the shank 35 and receive between them an adjustable jaw 44 provided with teeth 45 which cooperate with the teeth 37 of relatively fixed jaw 36. The adjustable or slidable jaw 44 is provided with spaced parallel inner and outer slots or openings 46 through which pass pins 47 which guide the adjustable jaw 44 in its inward and outward movements. The teeth 45 are arranged in a curved series and present a concaved engaging face to the pipe or rod. The slidable jaw is also provided with an inner concaved face 48 which is engagedby a cam head 49 of an operating handle or lever 50. The operating handle or lever 50 is eccentrically pivoted between the projecting porreeaeee tions of the sides of the shell by a screw 51 or other suitable fastening device and when the handle or lever 50 is swung outwardly with respect to the inner end of theshank 35 the cam action of the rounded portion or head 49 forces the adjustable jaw 44: toward the coacting relatively fixed jaw 36 thereby securely gripping the pipe or rod.

The out-ward movement of the lever or handle 50 on its pivot 51 is limited by projections 53 preferably formed by the terminal portions of a pin and arranged to engage projections or lugs 55. The lugs or projections 55 are located at the inner or lower edge of the sides of the shell or casing in the path of the projections 53, and the projections of the handle or lever may be located to secure the desired gripping action of the wrench without liability of crushing or injuring the pipe operated on.

What is claimed is A wrench of the class described including a shank provided with a longitudinal slot and having a relatively fixed jaw at its outer end, a shell or casing mounted on the shank and provided with a pivot extending through the slot of the said shank, an adjustable jaw carried by the shell or casing and slidably mounted thereon to move toward and from the'relatively fixed jaw and a lever or handle also mounted in the shell or casing and having an eccentric or cam portion arranged to engage and actuate the adjustable jaw, and means for limiting the relative movement of the lever or handle, said means including lugs or projections of the shell or casing and coacting projections carried by the handle or lever.

In testimony whereof I affix my signature in presence of two witnesses.

- ALLAN Gr. CARMICHAEL.

Witnesses:

JOHN S. KELLY, C. L. WILSON.