US1019063A - Pipe-cutter. - Google Patents

Description

J.'R.LONG.

PIPE CUTTER.

APPLICATION FILED JULY 28,1911.

Patented Mar. 5, 1912.

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JOHN R. LONG, OF EAST AKRON, OHIO.

PIPE-CUTTER.

Specification of Letters Patent.

Application filed July 28, 1911.

Patented Mar. 5, 1912.

Serial No. 641,134.

To all whom it may concern.

Be it known that I, JOHN R. Lone, citizen of the United States, residing at East Akron, in the county of Summit and State of Ohio, have invented certain new and useful Improvements in Pipe-Gutters, of which the following is a specification.

My invention relates to improvements in pipe cutters, and particularly upon the style of cutter originally shown and set forth in my application for Letters Patent of the United States, Ser. No. 613,608, all substantially as shown and described and particularly pointed out in the claim.

In the accompanying drawings, Figure 1 is a sectional elevation of the invention lengthwise axially, and Fig. 2 is a plan view thereof. Fig. 3 is a perspective view of the inner cutter jaw, and Fig. 4 is a cross section substantially on line ww, Fig. 1. Fig. 5 is a perspective of the inner j awholder or support.

In the construction above referred to and upon which this invention is an improvement the inner jaw support or holder 2 was recessed in its bottom and front so as to provide room beneath and within the same for the inner jaw 3, which rested directly upon the tapered shank of the outer jaw member 4, and the sleeve or yoke 5 was the same as shown herein, flaring slightly in the direction of said jaws and adapted to lock the parts 2 and 4 together in working relation as is now well known in several wrenches patented by me. Likewise the screw 6 was engaged through a lengthwise threaded bore in the rear inner portion of holder 2 and was rotarily confined in a socket in the heel of aw 3 as shown herein, the said jaw meanwhile having its support directly upon the shank of the lower jaw and its rotary cutter 0 at its top and front of the holder 2 as also in this case.

The difficulty as to the original construction thus generally described was that the jaw member 3 lay directly between the holder 2 and the shank 4, and that when the yoke was moved forward upon the parts to working position and the cutter was put at work the slack both above and below the member 3 not only had to be taken up but there was a tendency to tilt down and bind at the front of said parts with the effect that the said jaw 3 would become locked and could not be operated by screw 6. Now, by my construction, I have effectually overcome and remedied this objection by providing the supporting member 2 with a lengthwise cavity or recess 7 which is oblong in cross section with flat sides and of the same proportions its full depth to receive the shank or body of the jaw member 3. It will be noticed that the said jaw member projects about two-thirds its length into said cavity and that the bottom wall 8 of said cavity is part of the jawholder and is flat on its outside and lies directly upon the flat edge of outer jaw member 4. It follows that the said jaw 3 is not in anywise afiected by the action of the yoke upon the parts 2 and 4, and that it is equally free to slide back and forth at all times regardless of whether the yoke is locked or loose. This makes the said jaw 3 responsive to the adjusting screw 6 by which it is advanced as the cutting of the pipe progresses and while parts 2 and 4 are firmly and fixedly yoked together. The front end of jaw 4 is curved upward and carries two cutters c and c at different elevations and so as to come respectively above and below the advancing cutter 0.

It is also to be observed that in the present construction the respective outer edges of the main jaw and the slidable jawholder are rounded in cross section, as is also the yoke to match, as clearly seen in Fig. 4, and which is material in contributing to the overcoming of the tendency of theflat or angular edges heretofore used to become bound and locked together. As to this it should be understood that there is a disposition in the construction to wedge so tightly within the yoke that often it is diflicult to separate the parts, and the present rounded formation is therefore material and of the essence of the present invention because it practically eliminates this objection while it is none the less quick and effective in producing the temporary locking required. 7

A detaining screw 9 engages through yoke 5 into a slotor recess 10 in the side of the slidable member 2.

The threaded bore for screw 6 in jaw- 12 carrying the cutters c and 0 and the slidable member 2 being tapered reversely or rearwardly.

What I claim is:

A pipe cutter having fixed and movable jaws respectively provided each with a rotary cutter and a slidable holder for the inner of said jaws having a recess lengthwise in its bottom open from the front and in which said inner jaw is adjustable, the said fixed jaw and the said slidable holder being tapered in opposite directions along their Copies of this patent may be obtained for outer edges, a yoke confining said parts in operative relations and a handle threaded lengthwise through the lower portion of said 15 I slidable holder and rotatably locked in the said slidable jaw.

In testimony whereof I affix my signature five cents each, by addressing the Commissioner of Patents, 1 Washington, I). G.

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