US1193147A - Wrench - Google Patents

Description

S. N. HOLM.

WRENCH.

APPucAloN min ocT. l. 1913.

1. ,1 93, 1 Patented Aug. 1, 1916.

SVEN N. HOLM, lOIE' DORCHSTER, MASSACHUSETTS.

WRENCH.

Appli-cation filed October 1, 1913.

To all whom t may concern Be it known that l, SVEN N. HoLM, a citizen of the United States, residing at Dorchester, county of Suffolk, Commonwealth of Massachusetts, have invented certain new andA useful Improvements in Wrenches, of w-hich the following is a speciiication.

This invention relates to Wrenches and particularly to a pipe Wrench.

My invention involves a radical departure from and an improvement over existing devices of thisclass.

The object of my invention is to provide a wrench capable of manufacture at a reasonable cost, and embodying these essential characteristics, ease and simplicity of adjustment, perfect control of the grip and release of the jaws and great durability and strength.

In my present invention I employ two pivoted levers having integrally formed pipe jaws and a sliding member adjustably embracing one lever and pivoted tothe oo operating lever. This construction enables me to get an easy and quick adjustment and provides for perfect control of the grip and release of the jaws.

The construction and principle of my invention will be more fully disclosed in the speciiication which follows; and in the drawings which form a part of that specification I have shown as anillustrative embodiment a construction which not only clearly illustrates my invention but is in itself a form proven to be of the greatest utility in practical use.

Throughout specification and drawings like numerals of reference are correspondingly applied.

lin the drawings: Figure 1 is a side elevation of a wrench in accordance with my invention. Fig. 2 is a plan view thereof. Fig.

3 is a partial section on the line 3-3 of Fig. l

2. Fig. 4 is a cross section on the line 4 4 of Fig. 1, and Fig. 5 is an enlargeddetail view illustrating particularly the action of the bearing lugs or dogs which form an important feature of my invention.

The wrench thus illustrated comprises a pair of uncrossed levers 1 and 2, the lever 1 being regarded as the fixed member and the lever 2 as the relatively movable member.

The lever 1 has a smooth handle portion 3 at one end and has an external screw thread 4 cut thereon for a part of its length.

i Specification of Letters Patent.

Patented ang. i, raie.

Serial No. 792,699.

Above this thread the lever is longitudinally enlarged and terminates in an approximately horizontally disposed jaw 5, the inner face of which has inwardly pointed serrations 6. This enlarged portion of the `lever has an elongated slot 7 in which is guided and works across member 8 heldl in said slot externally thereof by a transverse pin 9. At this end the member S has a sliding engagement with the back of the lever 1. The pin 9 is journaled at its ends in two rounded bearing lugs or dogs 10 loose on ,said pin so as to turn under the rocking movement of the lever'2.

The under faces of the lugs are flattened to provide a constantly fiat bearing on the top face of the lever 1 on both sides of the slot, irrespective of the position of the lever (see Fig. 5). This construction also permits the lugs to slide freely along the lever when the coperating lever 2 is moved back and forth relative to the lever 1.

The other end of the cross member 8 is fastened to a pivot pin l1 near the upper end of the opposite lever 2. This lever terminates in a jaw y12 opposite to and cooperating with the jaw 5 and similarly provided with serrations 13. Said lever is enlarged at 14 similarly to the lever 1 and has its remaining portion formed as a smooth handle 15 cooperating with the handle 3.

That part of the metal of the lever 2 adjacent the pivot pin 11 is cut out on each side' to-provide somewhat circular recesses 16 which receive the free ends of the substantially horizontal arms 17 of a sliding member 18 adjustable along the lever 1 for the lengthof the slot 7 by a relatively sliding movement thereon and normally lying in substantial parallelism with the lever 1. The pin 11 fastens the arms 17 to the lever 2.

The sides ofthe lever 1 adjacent to the ing opening of the jaws and thus of the rocking member, within the limits of the 'Y slot 7 ,is effected by a milled feed nut 22 internally threaded to correspond to theV through the slot and link connection therewith. In this movement the sliding member as a whole slides along the lever 1 within the limits of the slot 7 Its travel, however, maybe regulated within the limits of said slot bythe adjusting nut V22, which, therefore controls the degree of separation of the jaws 5V and 12. When the proper adjustment has been found the lever 2 is moved toward and Vaway from the lever' 1- (see Fig. 3). This relative'movement of the levers is permitted through the sliding member. j

In' Voperation in order to turn a pipe or other object itV is necessary to move the wrench as a whole, the movement of the handles toward or fromfeach other` serving simply to grip orrelease the pipe on the yWorking or return stroke.

Various modications in the form and construction of my wrench may obviously be resorted to within the limits of the appended claims.

"f' What I therefore claim and desire to secure by Letters Patent is: 1. Ina wrench, a pair of relatively movj able levers,a connection fixed to one of said levers and having a sliding engagement with the cooperating lever, and means adjustable along one of said levers and pivotally connected with the other lever by the same fastening which fixes the connection to said leverand effectively disposed to control the 'position of said connection relative to said levers whereby to hold the adjustment of 4said levers.

2. In awrench, a pair of relatively movi able levers, a connection held to one of said rlevers and having a sliding engagement with the cooperating lever permitting adjustment of said levers by relative sliding movement thereof, and a member pivoted to one of said 'levers and slidable on the coperating lever and having engagement with the free end of said. connection to control the effective positioning of said connection and thereby hold l the adjustment of said levers.

5. In a..wrench, a pair of levers having gripping jaws, a connection between said levers permitting relative adjustment 0f said jjaws toward and from each other and a member pivotally connectedto one of said levers by the same fastening which fixes said connection to said lever and slidably engaging the other lever, said member having connection to be varied.

engagement with the free end of said connection to. control the effective positioning of said connection and thereby hold the adj ustment of said levers, and said member adjustable toward and from said connection to permit the effective positioning of said 4. In a wrench a pair of levers having gripping jaws and one lever having a slot, a connection held tothe other lever and working in the slot of said slotted lever, whereby said levers may be adjusted by simple sliding movement of one relative to the other, and a member pivotally connected with one of the levers and slidably engaging the other of said levers and effectively disposed to control the position of the connection in said slot whereby to hold the adjustment of the levers.

V5. In a wrench a pair of levers having 'gripping jaws and one lever having a slot, a connection held to the other lever and working in the slot of said slotted lever, whereby said levers may be adjusted by simple sliding movement of one relative to the otheigand a member pivotally connected with one of the levers and slidably engag-l ing the other of said levers and effectively disposed to control the position of the connection in said slot whereby to hold the adjustment of the levers, and means on said connection for limiting the motions of said member.

6. In a wrench, a pair of levers having gripping jaws, one lever having a slot, a connection held to the other lever and received in said slot and permitting adjustment of said levers relatively to each other, a pin through the free end of said connection, a pair of bearing devices on said pin having constantly flat bearing on the edges of said slotted lever on each side of the slot therein, and means pivotally connected to Vsaid unslotted lever and slidable on said slotted lever for controlling the effective positioning of said connection in said slot whereby to hold the adjustment of said levers.

7. A wrench of the class described comprising a pair of uncrossed levers each having a jaw at one end and one of said levers having a slot therein, a member pivoted to one of said levers and slidably embracing the cooperating lever, means for controlling the effective disposition of said member, a cross member held to one of said levers and Vguided in said slot of the coperating lever a pin moya-bly fastening the free end of said cross member in said slot, and lugs loose on 15 said pin and having flattened bearing faces arranged to slide freely along the face of said lever on each side of said slot and to maintain a constantly flat bearing on said lever irrespective of its Working position.

In testimony whereof I aiiX my signature in presence of two Witnesses.

SVEN N. HOLM.

Witnesses:

IDA S. CLEMENT, GEO. B. RAWLINGS.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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