US935668A - Wrench. - Google Patents

Description

P. LIGHT.

WRENCH.

APPLICATION FILED APR.16, 1909.

Patented Oct. 5, 1909.

FRED LIGHT, OF TRAVERSE CITY, MICHIGAN.

WRENCH.

' Specification of Letters Patent.

Patented Oct. 5,1909.

Application filed April 16, 1909. Serial No. 490,259.

To all whom it may concern:

Be it known that I, FRED LIGHT, a citizen of the United States, residing at Traverse City, in the county of Grand Traverse and State of Michigan, have invented a new and useful rench, of which the following is a specification.

This invention relates to improvements in monkey-wrenches and particularly to that class commonly known as quick-acting Wrenches.

The invention has for its object to provide a wrench of the character described in which means are provided for quickly adjusting a movable jaw to any desired position, and also means for holding the jaw in that position while engaging a nut or any other article.

The invention comprises a relatively stationary jaw, a movable jaw slidably mounted 011 the shank of said stationary jaw, a handle pivoted to the lower end of said shank, and a spring pressed pawl, one end thereof being pivoted to the handle and the other end adapted to engage and retain the movable jaw in various positions.

In the drawings, Figure 1 is a perspective view of the wrench. Fig. 2 is a longitudinal sectional view of the same. Fig. 3 is a detail sectional view taken on the line 33 of Fig. 2. Fig. 4 is a detail sectional view taken on the line t4 of Fig. 2.

Like figures designate corresponding parts in all of the drawings.

Referring to the drawings, 1 designates a handle having an opening 2 which extends nearly the whole length of said handle for the purpose of decreasing the weight of said handle. The upper or inner end of the bandle is bifurcated to form upstanding ears 3 and 3 respectively. These ears are of greater width than the handle, and are provided with alined openings 4: and P respectively to form bearings for the bolts or rivets 5 and 5 respectively, the purpose of which will be hereinafter more fully described. Arranged between and pivoted to the said cars by means of the bolt 5, is a shank 6 having on its upper or outer end a fixed jaw 7 of the usual construction.

The invention further comprises a movable jaw consisting of an upper member 8 and a lower member 9 which are spaced apart and integrally connected by means of a central transverse barlO. Each of the with alined openings 11 and 12 in which is arranged the shank 6 of the relatively fixed jaw 7, the said openings being arranged adjacent to the bar 10. The end of the lower member opposite the opening 12, is bifurrated to form spaced arms 9 and 9 respectively, the ends of which are respectively connected to the upper member 8 by the bars 13 and 13, which are spaced from the bar 10 to form side openings 14 and 14?. The said transverse bar 10 extends between walls of the lower member 9 and is provided on its outer face with a series of teeth 15. A pawl 16, having a length greater than half the length of the shank 6, is also arranged between the ears 3 and 3 of the handle, and is pivoted thereon by means of the bolt 5 The pawl is provided with an outwardly curved thumb-piece 17 which extends downwardly ashort distance over the handle 1. The inner edge of the pawl is provided with a series of teeth 18 which are adapted to engage the teeth 15 of the movable jaw. A flat spring 19 is secured to the .upper member 8 by a screw 20 or other suitbears against the outer side 21 of the pawl 16, to normally hold the pawl in engagement with the teeth 15 of the movable jaw. The upper or inner end of the pawl is provided with an outstanding transverse stop-pin 22 which is adapted to enter a slot 23 located in the inner side of the lower member 9 of the movable jaw. The inner surfaces of the arms 13 and 13f as well as the arms 9 and 9 are inclined in such a manner that the lower portion of each of said arms is of greater cross sectional area than the upper portion thereof. This construction will permit of a stop-pin 22 being moved between the spaced arms 13 and 13 whenever it is desired to disengage the pawl from the movable jaw; but when the movable jaw is in its uppermost position the pin 22 will enter the slot 23, which being limited in depth, will prevent the movable jaw from becoming detached from the pawl. The slot is also of sufficient width to permit a lateral movement of the pin whenever it is desired to disengage the pawl from the teeth of the movable jaw. The upper member 8 is provided on its under side and directly above the pawl with a cut-out portion 24 which will permit of the movable jaw being spaced members 8 and 9 are respectively provided a greater distance from the fixed jaw.

on which the -pawl is arranged.

It will be evident from referring to Fig. 2 of the drawings that by bearing on the thumb-piece 17 of the pawl 16, the pawl will be forced out of engagement from the movable aw, which will then permit the said jaw to be adjusted as desired upon the shank 6 of the relatively fixed jaw. When the movable jaw has been properly posi- 'tioned, the thumb-piece is released, and the spring 19 will throw the pawl into engagement with the movable jaw and thereby hold the same in that position.

movable jaw and is pivoted to the handle,

forces the said jaw tightly against the nut or whatever article is being operated upon. To release the movable jaw from the nut, it

"is necessary to swing'the handle back to its normal pos1t1on,sa1d movement causing the movable aw to recede fromthe article.

Fromthe foregoing, it-is thought that the construction, operation and many advantages of the herein described invention will be apparent'to those skilled inthe art, without further description, and it will be understood that various changes in the size, shape, proportion and minor details of con str'uction, may be resorted to without departing'from'the spirit or sacrificing any of the advantages of the invention.

WVhat I claim is 1. In a wrench, the combination with a handle having spaced longitudinal ears formed at'one end thereof, and 'havmg a plurality of spaced and alined openings formed therein, of a relatively fixed jaw arranged between the said ears and pivoted thereto by a transverse bearing which is arranged in one pair of the alined openings, a

movable aw slidably mounted on the shank ofthe fixed"jaw above the handle and provided with a cut-out portion, and a pawl pivoted between the ears of the handle by a transverse bearing which'is arranged in the other pair of alined openings thereof, one

end of the pawl extending into the cut-out portion and engaging the movable jaw, and the other end thereof terminating 1n an extended finger-piece.

2. In a wrench, the combination with a handle having spaced longitudinal ears formed at one end thereof and having a plurality of spaced and alined openings formed therein, of a relatively fixed jaw arranged between the said ears and pivoted thereto by a transverse bearing which is arranged in one pair of the alined openings, a movable jaw slidably mounted on the shank of the relatively fixed jaw above the handle and provided with a cut-out portion, a pawl pivoted between the ears of the handle by means of a transverse bearing which is arranged in the other pair of alined openings thereof, said pawl extending along the shank of the relatively fixed jaw in a substantially parallel relation thereto, one end of the pawl extending into the said cut-out portion and engaging the movable aw and the other end terminating in an extended finger-piece, and

means carried by the end of the pawl for engaging the movable jaw for limiting the movement of the said aw and also preventing the said pawl from becoming disengaged from the said jaw.

3. In a wrench, the combination with a handle having spaced longitudinal ears formed at one end thereof, and having a plurality of spaced and alined openings formed therein, of a relatively fixed jaw, one end of the shank thereof being arranged between the said ears and pivoted thereto by a transverse bearing which is arranged in one pair of the alined openings of the ears, a movable jaw slidably mounted on the shank of the relatively fixed jaw, and consisting of upper and lower members which are spaced apart andintegrally connected by a centrally arranged transverse bar which extends down to the bottom of the lower member, and is provided on its outer side with a plurality ofteeth, a pawl pivotally connected to the handle by means of a transverse bearing which is arranged in the other pair of alined openings of the ears, said pawl being spaced from but substantially parallel to the shank of the fixed jaw and provided on its inner side with a plurality of teeth which are adapted to engage the teeth of the movable jaw and thereby retain the said jaw in position, an inwardly extending spring secured to the movable jaw and adapted tobear against the outer face of the pawl to normally hold the said pawl into engagement with the said jaw, and a thumb-piece integral with the pawl and extending outwardly over the handle, said thumb-piece being adapted to act as a lever for the pawl and thereby disengage the pawl from the movable aw.

4. In a wrench, the combination with a handle having spaced longitudinal ears formed-at one end thereof, and having a plurality of spaced and alined openings the shank of the relatively fixed aw, and consisting of upper and lower members which are spaced apart and integrally connected by a centrally arranged transverse bar, which extends down to the bottom of the lower member and is provided on its outer side with a plurality of teeth, the end of the lower member being bifurcated to form spaced arms which are connected at their respective ends to the upper member by tapered arms, and a slot located in one of the spaced arms, a pawl pivotally connected to the handle by means 01 a transverse bearing which is arranged in the other pair of alined openings of the ears, said pawl be ing spaced from but substantially parallel to the shank of the fixed jaw and provided on its inner side with a plurality of teeth which are adapted to engage the teeth of the movable jaw and thereby retain the said jaw in position, a stop-pin secured on the end of the pawl and adapted to enter the slot in the lower member of the movable jaw, and thereby prevent the said jaw from becoming disengaged from the pawl, said slot being of a suflicient width to permit the pawl being disengaged from the teeth of the jaw.

In testimony, that I claim the foregoing as my own, I have hereto aiiixed my signature in the presence of two witnesses.

FRED LIGHT. Vitnesses:

OTTO KYsELKA, C. D. LA POINTE.

Images