US916376A - Pipe-wrench. - Google Patents

Description

C. W. SIEVERT.

PIPE WRENCH.

APPLICATION FILED NOV. 11, 1908.

Patented Mar. 23, 1909.

IN VENTUR M%M PI PE JVRENCH.

Specification of Letters Patent.

Patented March 23, 1909.

Application filed November 11, 1908. Serial No. $62,085.

['0 all whom it may concern.-

Be it known that 1, CHARLES i, Sinvica'r, a citizen of the United States, residing in the city of Los Angeles and county of Los Angeles, State of (,aliforna, have invented new and useful Improvements in Pipe-\Vrenches, of which the following is a specification.

It isthe object of my invention to construct a pipe wrench of cheap construction,

efficient operation and which can be quickly adjusted to fit upon pipes of ditl'erentv sizes. I accoin lish this object by the wrench described ierein and illustrated in the accoim panying drawings in which;

' Figure 1 1s a side elevation partly in section of my irn roved pipe wrench. Fig. 2 is outer end of which is the fixed jaw 6 which is vated as shown in- Fig. 1

The rocking jaw is preferably of tool steel referably made integral with the handle. his jaw is provided with a jacket? provided with teeth 8, which is removably secured by rivet 9. This jacket is of hardened steel an d when thetecth become dull or worn out, by removing the rivet 9 a new jacket can be placed upon the jaw. If desired the jacket could be omitted and the teeth made in the face of the jaw, but I prefer the use of the jacket, as the handle and fixed jaw can be more easily drop forged without teeth on the fixed jaw, than with teeth. There is a greater wear on the teeth than on any other part of the wrench, and itis therefore advantageous and economical to be able to replace them when dull and worn out.

10 is the rocking jaw of the wrench which is provided with a pin 11 in the top thereof. This pin projects into a recess 12 in'the top of the rocking jaw container 13 to hold the jaw from accidentally separating from the container 14 is a spring secured to the lower face of the rocking jaw at the rear'end thereof, and normally keeps the front end of the jaw eleand the teeth 15 are preferably tempered. The rocking jaw container slides upon the handle and is provided on the upper surface. of the front portion of the lower part thereof,

of the drawings.

with ratchet teeth 16 which engage with like ratchet teeth 17 in thelower edge of the handle. At the rearof the lower sideof the container is a release lever or handle 18 the front portion of which contacts with the lower surface -of the handle. When it is desired to adjust the rocking jaw by applying ressure to the rear end of the container handle the ratchet teeth thereof are moved out of engagement with the .ratchct teeth of the handle, and the container, carrying the rocking jaw, can be moved toward or from the fixed jaw as desired to adjust it for the size bf pipe upon which it is to beused. A screw 19 in the upper surface of the handle limits the rearward motionof the container and is so placed that when the container contacts with said screw the jaws are opened to their fullest capacity for use upon pipe of the largest size upon which the wrench is capable of being used.

In the modification shown in Fig. 2 the lower front portion of the container is pro vided with a removable plate 20 provided with ratchet teeth 21 which engage the ratchet teeth of the handle. This plate may be removahly secured to the container by screw 22. The object in providing this plate is that it may be made of tempered steel while the container is preferably male of cast metal. The outer ends of the jaws are preferably wider apart than the inner ends rock downward thereby wedging the plpebetween the jaws and gripping the pipe most firmly. This motion is produced by the rear end of the shank of the jaw engaging the container which holds it against longrtudinal movement, while the front end containing the teeth is free to move downward.

The reverse movement of the handle uickly releases the jaws from the pi e. The j constitutes the shank of the hired jaw.

By this construction a chea quickly adjusted and efficient pipe wrenc is provided,

' as the handle, fixed jaw, and rocking jaw can be drop forged of tool steel and the rocking andle jaw container can be formed.of malleable cast steel or iron.

claim is;

Having'described my invention what I series of ratchet teeth on the hack of the handle extending to near the jaw; a rocking jaw container slidably mounted on said handle, said container having ratchet teeth adapted to engage the ratchet teeth of the handle, said container having a handle on the lower rear portion thereof, the front end of which engages the wrench handle and the other portion of which handle normally projects away from the wrench handle; a rocking jaw removably contained in said rocking jaw container; means secured to said rocking jaw for removably securing the same in said container; and means for holding the front end of the rocking jaw elevated above the wrench handle when the parts are assembled for use.

2. A pipe wrench comprising a handle having a fixed jaw on the outer end thereof and having ratchet teeth on the back of the handle termir'r ting near the fixed jaw; a-

jacket removahly secured to said fixed jaw,

' said jacket having teeth in its outer face; a

rocking jaw container sli'dably mounted on said wrench handle, a plate removably secured within the lower front portion of said container, said plate having ratchet teeth which engage the teeth. of the handle and hold the containeragainst rearward movement; a handle secured. to said container on the lower rear portion thereof, the front end of which engages the wrench handle, and the I other portions normally project away from. the wrench handle; a rocking jaw removably secured in said container; and means for' holding thefr'ont end of the rocking jaw yieldingly elevated above the wrench handle when the parts are assembled.

3. A pipe wrench comprising a straight handle iaving ratchet teeth in the back thereof; a fixed jaw on the outer end of said handle projecting away from the front of the handle; teeth in the face of said fixed jaw which is toward the rear end of the handle, saidteeth being in a plane inclined to a line perpendicurar to the upper surface of the handle; a rocking jaw container s'ljdably mounted on said handle, said container havi ing in its lower front portion teeth to ngage the teeth on the handle; means secured to said container to rock the teeth thereof out of engagement with the teeth of the handle; and a rocking jaw rockahly secured in said container, said rocking jaw having teeth normally standing in a plane inclined to a line perpendicular to the upper surface of In witness that I claim the foregoing I' v the wrench handle, the teeth in send aws be-

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