US136004A - Improvement in devices for cutting pipe - Google Patents

Description

. Y `2 sheets-sheen. A. 1 PENNQGK @L T. A. CHANDLER.

Devicesfur Cutting Pipe, &c. 4 No. 136.004. y Patented Feb.1s,1873.

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`Devices for Cutting Pipe, &c.

. No. 136,004-, Ptemedf.eb.1s,1873.

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AM PHommHosnAPmcco.unosonnldsmucesa) 4 To all whom fit may concern.:

NITEDY STATES PA'rInvfr DFFIGE.

V`ANDREW J. PENNooK AND rHoMAs A. CHANDLER, or IocKFoED, ILLINoIs.

IMPROVEMENT IN DEVICES FOR CUTTING PIPE, &c.

Specification-forming part of Letters Patent No. 136,004, dated February 18, 1873.

Be it known that we, ANDREW J. PENNocK and THOMAS A. CHANDLER, both of Rockford, in the county`-of Winnebago and State of Illinois, have invented certain newa-,nd useful that class of wrenches used by plumbers. Its

objects are to adapt the wrench to use in cutting screws, and in cutting pipe, as well as to act upon nuts of differing sizes. The subject matter claimed is hereinafter particularly specified.

The accompanying drawing represents all our improvements as embodied in a single implement; obviously, however, some of them may be used without the others, and in wrenches varying somewhat from the construction herein shown.

Figure 1 represents a plan" or front view of one side of our improved ratchetwrench, showing more particularly the pipe-cuttiu g devices. Fig. 2 represents an edge view of the wrench, its pawls and ratchets being shown in dotted lines. Fig. 3 represents a transverse section on the line .fc .fr of Fig. 1, through a portion of the body of the wrench, looking toward the cutter. Figs. 4 and v5 represent longitudinal sections through the handle-heads, showing their ratchets. Fig. 6 represents a section through one of the ratchet-heads. Fig. 7 shows aface view of, and a section through, the screwtap ordie-plate. Fig. 8 represents the body with the tap inserted. Figs. 9 and l0 show the handle-heads detached. Fig. 11represents one of the ratchet-heads with its adjustable nut-holders.

We construct our improved wrench, by preference,.in the following manner: lts body, A, is of cylindrical form with a longitudinal l slot, a, in it extending to its central cavity al.

(See Figs. 1, 3, and 8.) Afianged head, B, is formed on one end of this body. A cutter-arm, C, carrying a cutter, c, vibrates on a pivot, c1, in arecess in the face of this head, moving parallel therewith and transversely to the axis of the cavity al. A spring, c2, bears on the back end of the cutter-arm to retract it when free. A suitable plate covers the spring.

' The cutter is fed forward by means of a feedscrew, C.

An'V 'mplement constructed as above described can be slipped laterally over any portion of a pipe-of suitable diameter, and the pipe can be severed by turning the implement, the cutter being' fed forward by turning ithe feedscrew by hand as the cut deepens., We prefer, however, to render the feed automatic, and thus increase the utility of the implement.

To do this we mount a handle, D, (with a head slotted as shown in the drawing,) upon the body A, so as to t snugly but turn freely thereon. A segment-rack, el, on this handle engages at each revolution with a gear, c3, upon the feed-screw, thus causingit to turn intermittingly, to feedv the cutter automatically as the cut deepens. To adapt the wrench to screw-cutting, we insert a tap or die plate,

E, in a transverse groove, c, in thepbody of the wrench.. This tap is applied to the point where the screw is to be cut, and worked as other dies are. To adapt' the wrench to nuts of varying sizes we formv transverse dovetail grooves fin the body or head, in which clampA plates F slide, being held in any desired posiA tion by set-screwsj". As in many positions the handle of the wrench ca-nnot be turned entirely around, a ratchet arrangement becomes indispensable to effective work. We therefore form a ratchet-ring, b, on the inner face of the head B, into which a spring-pawl, d', working in a recess in the handle takes, as shown in dotted lines in Fig. 2. This device, however, while effective, will only produce an intermittent rotation, whereas, for rapid work, a continuous movement is desirable. We therefore apply another head, B', to the body A, (see Figs. 6 and 11,) and construct a ratchet, bl, on its inner face. A second handle, D', is applied to the body, but in reverse position; its pawl a2 working into its ratchet b2, as above described.

Both handles, it will be observed, move round the head Ain the same direction; either a right or left hand nut can be unscrewed by applying the corresponding face of the wrench,

as one set of the clamps turns to the right, .and

the other to the left. The handle-heads being lally to any portion of a pipe with facility; the

screwtap can also easily be removed and inserted, or replaced by one of different size, and yet is firmly held while in position. Both handles can be turned around the body together or independently of each other. We thus by our invention combine many valuable features in a single implement.

We do not broadly claim a two-handled ratchet-wrench, as such implements heretofore have been patented; but their construction and operation differ essentially from ours.

We claim as our invention- 1. A ratchet-wrenchconstructed substantially as set forth, with a rotatingtubular body slotted longitudinally to permit of the insertion of a pipe sidewise.

2. The combinationof a tubular body, an adjustable cutter, and a feed-,screw or its equivalent acting upon the cutter, these members being constructed and operating'in oombination, substantially as set fortl1,to advance the cutter as the eut deepens.

3. The combination in a ratchet-wrench of a rotating body, carrying an adjustable cutter and a feed-screw, with a rotating handle, and a rack upon it, these parts being constructed I vand operating substantially as set forth, auto- -With handles having longitudinally-slotted heads, these members being constructed and -operating substantially assetforth, so that a (pipe or similar article may be inserted sidewise'and then encircled completely by the ANDREW J. PENNOCK. THOS. A. CHANDLER.

limplement.

Witnesses:

WM. A. CURTIS, T. J. LAMONT.

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