US1237677A - Combined pipe cutter, groover, and reamer. - Google Patents

Description

E. J. MURPHY. COMBINED PIPE CUTTER, GROOVER, AND REAMER. APPLICATION FILED JUNEZ. 1915- RENEWED JAN. 17.19.

1,237,677. I Patented Aug. 21,1917.

2 SHEETS-SHEET I.

E. I. MURPHY.

COMBINED PIPE CUTTER, GROOVER, AND REAMER. APPLICATION FILED JUNE 2. I9I5- RENEWED JAN- 17, I9IT. 1,237,577, Patented Aug. 21, 1917.

2 SHEETS E.T 2.

E WARD; MURPHY, or WAT FORD, NEW YORK, ASSIGNOR T0 w. is. ARMSTRONG 00..

' or ALBANY, NEW YoRK, a CORPORATION on NEW YORK.

Application filed June 2, 1915, Serial No. 31,674.,

and useful Improvements in'Gombined Pipe Cutters, Gro'overs, and Reamers, of whichthe following is; a specification.

Reference may be had to the accompanying drawings, and the reference characters marked thereon. which form a part of this specification. Similar characters refer to similar parts in the several figures therein. Certain objects of the invention are, by a singleoperation, to cutoff a desired length of pipe and to provide the same .with a peripheral groove near the cut-end; to prevent accidentally cutting through or dangerously weakening the pipe while'cutting a peripheral groove therein; to maintain the accuracy of a depth-gage in connection with a pipe-groove-cutter which requiresto be ground down or sharpened from time to time; and to properly finish the cut-end of the pipe-in thesame device in which it was cut.

Other objects will appear in connection with the following description.

Figure 1 of the drawings is, a view in sideelevation of a combined pipe-cutter groover-and-reamer embodying my invention, applied to a. sectlon of plpe.

' Fig.2 isa'front view of the same.

Fig. 3 is a view of the pipe-engagingportions of the device viewed from theside 0pposite that shownin Fig. 1. I

Fig. 4 is a vertical section of the same taken longitudinally of the pipe on the broken .line 4-4 in Fig. 1.

.:Fig. 5 is a similar view showing the reamer applied to the cut-end of the pipe.

Fig. 6 is a plan view. of one of the cuttersupporting slide-blocks with the cuttingknife, grooving: knife and depth gage mounted thereupon I Fig.7 is a viewin elevation of the outer side; of the same.

Fig. 8 -is a view in elevation; of the inner side of-the .same.

V Fig. 9 is a view partly in elevation and partly in vertical section. of the same as seen from the front.

Fig. 10 is a vertical cross-sectlon of the I Specification of Letters Patent.

COMBINED PIPE CUTTER, GROOVER, AND REAMER.

Patented Aug. 21, 1917.

Renewed January 17, 1917. Serial No. 142,953.

oflugs or brackets, 4, embracing a slideway- I flange, 5, on the frame.

The jaw-member, 3, can be moved toward and from the stationary jaw-member, 2, by means of a hand-operated screw, 6, which passes through an interiorly threaded bearing, 7 .on one end of the frame.

The other end of the frame is provided with a socket, 8, adapted to receive an op-- crating-handle, 9, by means of which the device can be turned around thev pipe to be operated upon, which pipe is closely embraced between, and supported by, the jaw members during the cutting-and-grooving' operation. v

Each 'of the jaw-members, 2' and 3, is formed with a slideway, 10, for a slideblock, 11, said slide-blocks being yieldingly actuated by springs, 12, which, under compression, tend to forcethe slide-blocks toward each other. Y

Attachedto the outer side of each slideblock, 11, is a cutter, 13, for severing a pipe; and attached to the inner side of each slide-block, 11, is a cutter, 14, for grooving the pipe, the cutter, 14, being somewhat shorter than the cutter, 13. v

The two cutters, 13, are located in a common transverse plane, and the two cutters, 14, are located in a common transverse plane parallel therewith.

A dept gage, 15, is also mounted upon each slide-block,,11, adjacent to the shorter cutter, 14. 7

Each slide-block, 11, thus has a cutter, 13, a cutter, 14, and a depth-gage, 15, mounted thereupon in fixed relation to the block and to each other The depth-gage, '15, is shorter than the shorter groove-cutter, '14, a distance equal to the depth of groove desired; and the cutter, 13,'is sufliciently longer than the cutter, 14, tosever the pipe before the cutter, 14, has penetrated the pipe the distance permitted by the depth-gage, 15.

beyond the pipe-engaging portions of the jaw-members, so that in applying the device to a pipe, 18, when the movable aw, 3, is forced toward the stationary jaw-member,

2, the pipe will be first engaged by the longer cutters, 13, causing the slide-blocks, 11, to be forced back into their respective slideways against'the force of the'springs,

12, until the pipe is closely confined between the jaw-members, after which the device is rotated uponthe. pipe, while the cutters, under the action'of the springs, 12, are causedto penetrate the pipe, which isfinally severed by thecutter, 13, and grooved by the cutter, 14, to the depth permittedby the depth-gage, 15.

In' Figs. 1 and 2, the pipe is shown nserte'd inthe device with the cutters, 13, in engagement with opposite sides of the pipe to forceback the slide-blocks, 11, into their respective slideways, as the movable jawmember, 8, is forced toward the stationary jaw-member, 2. j

, In Figs. '3 and 4, the pipe is shown closely confined between the jaw-members with the slide-blocks, 11, forced back into their slidewa'y's position to begin the cutting opera tion.

In Fig. 5, the pipe is shown still supported by the aw-mei'nbers after the pipe h as been severed by the cutter, 13, and a groove, 19, formed in the pipe by the cutter, 14, the further penetration of which cutter, 14, is prevented by the engagement of the depth-gage, 15, with the outside of the pipe. i

.As the cutters, 13 and 14, require to be ground down or sharpened from time to time, I have,.in order to maintain the accuracy ofthe deptlrgage, provided a screwand-slot connection which permits a limited movement of adjustment of the depth-gage toward and from thecutting end of the cut ter,'14, a distance equal to the depth of groove desired. I j

The depth-gage, 15, is adj ustably attached to the cutter, 14, by means of a screw, 20,

i which passes through a slot, 21, in the depth permitted gage, which slot permits, when the screw, 20, is loosened, a movement of the depthgage towardthe cutting-end of the cutter a distance equal to the depth of groove desired.

When it is found necessary to grind down or sharpen the cutter, 14, the screw, 20, is loosened, the depth-gage'is moved toward the cuttind end of the cutter, the distance bythe slot, 21, which. brings the end'of thedepth-gage flush with the end of the cutter, and the parts'are firmly secured in this position by setting up thescrew, 20. Both the cutter and the depth-gage are then ground down togetherand eq 1ally,.,as by an emery-wheel,,untilthecutter is properly re sharpened The screw,.20, 1s then again loosened and the depth-gage is dropped back the limited distancepermitted, leaving its end the original distance back of the cutting-end of the cutter. 3

For certain purposes of the invention,.the adjustable movement of the depth-gage relatively to the cutter, 14, may be limited in any known manner.

7 As shown in the drawing, the adjustable movement of the depth-gage away from the cutting-end of the cutter, 14, is limited by "either the end-wall of. the slot, 21, orby the wall, 22, of a recess in theblock, 11, within which the cutter and depth-gage are mounted, by m'eans'of screws, 23, whiclr screws pass through apertures in the depth-gage and cutter, 14. Said apertures in the depthgage may be. in the form of slots, 24, per mitting the same degree of adjustment as the slot, 21, in case it should bedesired to sharpen the cutter, 14, without removing it from the block.

'In severing a piece of pipe, the cut-end is usually left with a bur upon its edge which is objectionable, particularly if the pipe is to be used as'part of an electric conduit.

A further feature of my invention is'a pipe-reamer whereby the cut-end of the pipe can be finished before the pipe is removed from the device wherein it was cut.

For this purposeI pivotally mount at 25 upon one ofthe jaw-members, preferably the stationary jaw-member, 2, a reamerholder, 26, in the swinging end'of which is movably mounted a .reamer, 27, which is.

The reamer-holder is thus mounted upon,

the jaw-member, 2, in suchva manner that its swlnglng end can ,be oscillated. to-ward' and from the neighboring cutter, 13, andthe reamer, 27, is of such dimensions that it is adapted to pass through the clearance-openwith the cut end of the pipe.

During the cutting-andfgrooving operation, the reamer is swung back away from the pipe and cutter, 13, in the position shown in Figs. 1 and 2, in which position "itfis yieldingly held "by a spring-latch,

ing, 30, in said cutter, 13, into engagement After the cutting-and-groovingoperationhas been completed and before't-he ipe" is removed from the' device, "jtheream'er' is swung to a position opposite the cut-end of the pipe and is then forced inwardly by hand through the clearance-opening, 30, into engagement with the cut-end of the pipe, while the device is rotated around the pipe in the same manner as during the cutting operation.

The burs and rough edges left by the cutting tool are thus scraped off, leaving the cut-end with a smooth finished surface.

The aperture, 32, in the reamer-holder through which the reamer plays, is somewhat larger than the body of the reamer, permitting the reamer to adapt itself to dif- "ferent sizes of pipes.

In the reaming operation, the reamer, 27, is supported laterally by the side-walls of the clearance-opening, 80, in the neighboring cutter, 13. p

I have shown a reamer having a forked end adapted to embrace the edge of the pipe and finish the same both internally and externally.

lVhat I claim as new and desire to secure by Letters Patent is l. A device of the class described having pipe-supporting jaw-members, and a cutter and a depth-gage movably mounted in fixed relation to and out of line with each other upon one of said jaw-members.

2. A device of the class described having pipe-supporting jaw-members, and a cutter and a depth-gage movably mounted in fixed relation to and out of line with each other upon each of said jaw-members.

3. A device of the class described having pipe-supporting jaw-members, a cutter and a depth-gage movably mounted in fixed relation to each other upon one of said jawmembers, and another longer cutter movably mountedupon one of said jaw-members in a different transverse plane from said firstmentioned cutter.

4. A device of the class described having pipe-supporting jaw-members, and having movably mounted upon one of said jawmembers in fixed relation to each other in different transverse planes two cutters of different lengths, and a depth-gage for the shorter of said cutters.

5. A device of the class described having pipe-supporting jaw-members, a spring-actuated block slidably mounted on one of said jaw-members, and a cutter and a depth-gage mounted out of line with each other upon said block in fixed relation thereto.

6. A device of the class described having pipe-supporting jaw-members, a spring-actuated block slidably mounted upon one of said jaw-members, and having in fixed rela tion to said block in different transverse planes two cutters of different length, and a depth-gage for the shorter of said cutters.

7 A device of the class described having a cutter, a depth-gage out of line with said cutter capable of a limited movement toward and from the cutting-end of the cutter, and means for detachably securing said cutter and depth-gage in fixed relation to each other in each of the extreme positions of adjustment permitted the depth-gage.

8. A device of the class described having a cutter,-and a depth-gage with a screw-andslot connection whereby they are detachably secured together in fixed relation to and out of line with each other with the depth-gage at a distance from the cutting-end of the cutter equal to the depth of cut desired, said screw and slot connection permitting adjustment of the depth-gage toward the cutting-end of the cutter a distance equal to said desired depth of cut.

9. In a device of the class described, and

in combination, a pair of pipe-supporting jaw-members; a cutter movably mounted upon one of the jaw-members and provided with a clearance-opening; and .a reamer removably supported in said clearance-opening in the cutter in position to engage the cutend of the jaw-member-supported pipe.

10. In a device of the class described, and in combination, pipe-supporting jaw-members; a cutter movably mounted upon one of the aw-members and provided with a clearance-opening; a reamer-holder pivotally mounted upon one of the jaw-members to swing to and from said cutter; and a reamer movably mounted upon the reamer-holder adapted to engage the cut-end of the jawmember-supported pipe through said clearance-opening in the cutter.

In testimony whereof, I have hereunto set my hand this 10th day of May, 1915.

EDWARD J. MURPHY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. I

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