US915540A

US915540A - Quick-action monkey-wrench.

Info

Publication number: US915540A
Application number: US44932408A
Authority: US
Inventors: Jeremiah L Beers
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-08-19
Filing date: 1908-08-19
Publication date: 1909-03-16
Anticipated expiration: 1926-03-16

Description

J. -L. BEBRS. QUICK ACTION MONKEY WRENCH.

APPLIUATION FILED AUG. 19, 1908.

Patented Mar. 16, 1909.

INVENTOR I Wm iififlyawwvwfimr 2 2 2 2 3 I FIGJ.

E 55s 7 I removable plate covering I 1n the lower side of the movable aw; and Fig,

UNI

v JEREMIAH L. BEERS, OF WILKINSBL'RG, PENNSYTXAXIA.

QUICK-ACTION MONKEY-WRENCH.

Specification of Letters Patent.

Patented March 1c, 1909.

Application filed August 19, 1908. Serial No. 449,324.

To all whom it may concern:

-Be it known that l, JEREMIAH L. BEERS, a resident of \Vilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Quick-Action Monkeyrenches, of which the following is a specification.

This invention is a quick-acting monkeywrench, and the object of the invention is to provide a wrench of this character which is of simple and strong construction, which can be readily operated, which is so constructed as to hold the movable jaw a ainst movement in either direction, and w ich permits the movable jaw to be moved to engage the nut by means of the hand of the operator which is holding the wrench.

he invention comprises the construction and arrangement of parts hereinafter described and claimed.

In the accompanying drawings Figure 1 is a longitudinal sectional view of a wrench embod ing my invention; Fig. 2 is a section on the ins 2--2, Fig. 1, showing a face view of the detents on the lower side; Fig. 3 is a similar view on the line 3-3, Fig. 1, showing in face view the detents and operating mechanism on the back of the shank; Fig. 4 is a cross section on the line 44, Fig. 1; Fig. 5 is a similar section on the line 5-5, Fig. 1; Fig. 6 is a longitudinal section showing the manner of adjusting the detentson the back of the shank; Fig. 7 is a detail view showing the the wedge block 8 is a perspective view of the s ring.

My wrench has the usual shan r 1, carryin the fixed jaw 2, and rovided with the usua handle 8. The shai is provided on what is usually termed its lower edge with rack teeth 4, which are comparatively coarse, and which referably run entirely across the lower edge of the shank. On what is usually termed its up er edge or back the shank is also pro vi ed with rack teeth 5, which are of only half of the size of the rack teeth i, and alternate ones of which are located directly opposite the teeth 4. Preferably the rack teet 5, extend only partly across the back or top of the shank, leaving side ortions which are not toothed, toserve as a caring for the jaw and prevent mutilation of the teeth.

Mounted on the shank is the movable jaw 7, which has a sleeve portion entirely,s ur rounding the shank, as is usual. he bottom portion of the jaw is'provided with'a restaggered relation with reference cess, 8, open toward the shank and containmg form of plates provided on their inner edges with teeth 10, cooperating with the teeth 4, on the lower edge of the shank. The teeth on these several detents are arranged in staggered relation with reference to each other, as shown'in Fig. 2, so that the jaw can be held in positions constituting fractions of the distance-between the teeth 4. Four detents 9, are shown, so that if the rack teeth 4, on the shank are spaced of an inch, by means of these detents the jaw can be locked at distances of 5 '2- of an inch apart.

The detent plates 9, are normally held or pressed .against the rack teeth by means of a owed or leaf spring 11, in the recess behind the detents. These detents are provided with openings 12, having one side inclined as shown. In these openings is a wedge block 14, adapted to e moved longitudinally and by acting against the inclined side of the openings, to retract the detents against the action of the s ring 11. The wedge block is provided wit 1 end portions 15, that at one end working in a groove 16, in one of the walls of the jaw, and the other working in asimilar groove 17, in a plate 18, which is removably secured to the jaw, such as by means of a screw 19, so that said plate can be removed to permit the removal of the wedge block to assemble and d .sassemble the parts. The Wedge block 14, is actuated by a usher or button 20, which projects throug a hole in the end of the jaw. This pusher has a threaded connection with the wedge block so that it can be unscrewed and taken out for the pur ose of disassembling the arts. It normal is held in its outwar ppsition by a spiral spring 21, interposed etween a shoulder on said pusher and a ledge surrounding the opening through which the )usher projects.

The bac or rear member 2 1, of the jaw is grooved or recessed longitudinally, and mounted in said groove on a pivot 25, are two detents or dogs 26, ada ted to engage the rack teeth 5, on the bac of the shank. The teeth of these dogs are. also placed in to each other. Springs 27, are arranged in the backs of these detents and normally press them into engagement with the rack teeth 5, on the shank. The dogs are disengaged from the rack teeth by a wedge block 28,

a number of detents or dogs 9, 1n the I adapted to be'forced behind or beneath the I 65 in the movable jaw.

tails of said dogs. This wedge block is actuated by a pusher 29', projecting through an opening in the end of the jaw. This pusher has a threaded connection with the wedge 5 block and is rovided with a collar 31, en-

gaging the plhte 32, which is notched to straddle the pusher. This plate and collar serve to prevent longitudinal movement of I the pusher when it is rotated, so that by turning the pusher, the threaded connection with the wedge serves to push said wedge underneath the tails of the detents or dogs 26, to hold them in the groove in the jaw or out of contact with the rack teeth, as shown in Fig. 6. Thisis done only when assembling or disassembling the jaw and shank. For ordinary operations of the wrenclithe wedge block 28 is actuated by shoving the pusher 29 inwardly.

The

rack teeth

4 and 5, ranged; that is, the teeth 4, face toward the iixed jaw, while the teeth 5, face away from the fixed jaw. Consequently by means of these racks and the detents or dogs described, the movable j aw is held against movement in either direction. The detents 9, and rack teeth 4, hold the movable jaw from o ening away from the fixed jaw, but by pus g inwardly on the pusher 20, the detents 9, are released from the rack teeth 4, and the movable jaw can be moved away from the fixed jaw'to open the wrench.

The detents 26, and rack teeth 5, hold the movable jaw from accidentally closing,which are oppositely arset to fit a certain nut, and it is-necessary to remove the same, it is desirable to have the jaw remain in the adjusted position so that frequent applications of the wrench to the nut can be made without further adjustment. By merely pushing in on the pusher 29, however, these detents are-disen aged from the rack teeth 5, and the mova le jaw can be closed on the nut, or moved toward the fixed from the outer end of the movable jaw, it is in a convenient position to be engaged by the thumb of the hand which grasps the handle, so that the wrench can be readily manipulated by a single hand; .In other words, it is merely necessary to place the wrench in engagement with the nut, and then by means of the thumb push the pusher 29, and the detents 26, are disengaged from the teeth 5, and simultaneously the movable jaw is pushed up into close contact 'with the nut. This makes the device very convenient to operate. By turning the pusher 29, the wedge 28, is forced under the tails of the detents 26, thus permanently retracting the same, said wedge being held from moving from underneath the tails of the detents by the collar 31, and plate 32.

The parts are assembled by first placing all of the detents and springs within the recesses The wedge block 14, is

1s Important, since after a wrench has been aw. Inasmuch as the pusher 29, projectsfix I put in place through the opening which is closed by the plate 18. ,The usher 20, is j connected to the wedge block by merely screwing the same into said block. The handle 3, is then removed from the shank, and I the shank slipped endwise int-o the opening in the movable jaw.

To take the wrench apart the handle 3, is removed from the shank, the pusher 29, is rotated to force the wedge 28, underneath the tails of the detents 26, and then by pressing the pusher 20, inwardly and holding the same in that position, the movable jaw can j be slipped ofi the shank. To remove the detent plates 9, from the jaw the plate 18', is removed, the pusher 20, is screwed out of the wedge block, and the wedge block taken out, I afterwhich the detent plates 9, can be removed from the inside.

The wrench described is of simple con struction, having a small number of simple and strong parts. It positively holds the j movable jaw against movement in either direction and can be readily manipulated to close the jaw on the nut by the use of only a single hand.

What I claim'is:

1. In a wrench, the combination of a shank provided with two sets of rack teeth, said teeth in the two sets facing in opposite directions, a movable jaw on said shank, two sets of detents carried by said jaw and engaging said racks, each set of detents being provided with teeth staggered relatively to each other, and a pushing element extending through the end of the jaw toward the handle and arran ed to release the detents from the rack teeth which face away from the fixed jaw, whereby by merely pushing on said element, the detents are released and the jaw simultaneously moved toward the fixed jaw.

2. In a wrench, the combination of a shank carrying a fixed jaw and provided with rack teeth on its underside facing toward said 'ed jaw, a movable aw on said shank, a series of detents carried and engaging said rack and provided with teeth staggered relatively to each other, a wedge member arranged to disengage said detents from the rack, and means for moving said wedge member.

carrying a fixed jaw and provided on one edge with rack teeth facing toward said 'aw, a movable jaw mounted on said shank, a series of detents carried by said jaw and en. gaging the rack and provided with teeth staggered relatively to each other, a spring normally pressing said detents into engagement with said rack, a wedge block engaging said detents, means for actuating said wedge block, and a removable plate arranged to permit the removal of said wedge block.

4. In a wrench, the combination of a shank carrying a fixed jaw and provided on one 3. In a wrench, the combination of a shank provided with ing member for with the rack teeth, a'wedge block located in the Openings of said detents and arranged to actuate the same, an actuating member havmg a disconnectlble connection with said wedge bIock, and a removable plate closing an opening through which the wedge block can be withdrawn.

5. In a wrench, the combination of a shank rack teeth, a jaw movably mounted on said shank, detents pivotally mounted on said jaw and engaging said rack teeth, springs normally holding said detents in engagement with said rack teeth, a wedge slidably mounted'in the jaw and engaging the tails of said. pivoted. detents, and a pushactuating said wedge.

6. In a wrench, the combination of a shank provided with rack teeth, a movable jaw on said shank, detents mounted on saidjaw, a

wedge arranged to move said detents out of engagement from the rack teeth, a pusher having a threaded engagement with said wedge and mounted to rotate and also recipl rocate inwardly and move the wedge, and

ward movement when rotated, whereby the I wedge is forced into position to hold the detents permanently out of engagement with j the rack teeth.

provided with a fixed jaw and with rack l teeth on opp0site faces and facing in opposite directions, a movable jaw on a shank,

l detents carried by said movable jaw and engaging said rack teeth and arranged to hold 1 the movable jaw from movement both, toward and from the fixed jaw, and a reciprocating actuating member-for the detent E engaging the teeth facing away from. the l fixed aw, said actuating member projecting i from the outer end of the jaw toward the E handle, whereby when said member is pushed ithe detent is released from the rack teeth and the movable jaw simultaneously moved vi toward the fixed jaw. In testimony whereof, I have hereunto set my hand. 7 l JEREMIAH L. BEERS.

l Witnesses:

G. GLEN CAIN, l JOHN J. WALKER.

l means for holding said pusher against out- 7. In a wrench, the combination of a shank r