US1230974A

US1230974A - Jig.

Info

Publication number: US1230974A
Application number: US8382116A
Authority: US
Inventors: Alfred S Abbott
Original assignee: J E BUKER; JOHN F LONG
Current assignee: J E BUKER; JOHN F LONG
Priority date: 1916-03-13
Filing date: 1916-03-13
Publication date: 1917-06-26
Anticipated expiration: 1934-06-26

Description

A. S. ABBUTT.

JIG.

APPLICATION FILED MAR. I3. 191'6.

1,230,974. Patented June 26, 1917.

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APPLICATION FILED MAR. 13. me.

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APPLICATION FILED MARJS. 1916. 1,239,974.

Patented June 26, 1917.

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ALFRED S. ABBOTT, OF SPRINGFIELD, 4MISSOURI, ASSIGNOR OF ONE-THIRD TO J'. E. BUKER, OF CHICAGO, ILLINOIS, AND ONE-THIRD TO JOI-IN F. LONG ,OF SPRINGFIELD,

MISSOURI.

J IG.

Application led March 13, 1916.

To all whom t may concern.'

Be it known that I, ALFRED S. ABBOTT, a citizen of the United States, residing at Springfield, in the county of Greene and State of Missouri, have invented certain new and useful Improvements in Jigs, of

work of this character which may be readily attached to an ordinary turret lathe, and which will be capable of adjustments giving the device a considerable range of utility.

The invention is illustrated, in a preferred embodiment, in the accompanying drawings, wherein- Figure 1 is a plan view of a turret lathe with the jig of my invention shown as applied thereto.

Fig. 2 is a side elevation of the lathe.

Fig. 3 is a plan view of the jig on an enlarged scale showing also a portion of the blank on which the tool forming part of the jig operates.

Fig. 4 is a sectional view on line 4 4 of Fig. 3.

Fig. blank.

Fig. 6 is a fragmentary section on line 6-6 of Fig. 8.

Fig. 7 is a sectional view taken through the partially cut blank vand through the finishing roller which operates to remove the 5 is a sectional plan of the jig and burs from the work.

Fig. 8 shows three packing rings which are cut and finished at one operation by means of the jig when constructed as shown in the preceding figures.

Fig. 9 is a view, similar to Fig. 5, showing the device modified so that it will produce a type of packing somewhat different from that produced by -the device shown in the preceding figures.

Specification of Letters Patent.

Patented J une 26, 1917.

Serial No. 83,821.

Fig.'10 is a sectional view on line 10-10 of Fig. 9.

Fig. 11 is aview similar to Fig. 7 further illustrating the modification.

Fig. 12 is a fragmentary perspective view of the blank from which this other type of packing is cut; and

Fig.v 13 is a view, in perspective, of the product.

Like characters of reference designate like parts in the several gures of the drawings.

While the jig of my invention might be employed in connection with other machines, it is most conveniently used on a turret lathe` of the familiar type shown in Figs. 1 and 2. 10 is the framework of the machine, 11 theturret which is supported on a carrier 12 movable to and from the automatic chuck 13. 14 is the tool holder having a dove-tailed connection, shown at 15, with the turret so as to be movable thereon transversely of the machine.

The device of my invention is intended particularly to operate upon a tubular blank 16 which is held in the chuck 13 and is revolved axially by any suitable mechanism.

The jig, as shown in Figs. 1 to 8 inclusive, consists preferably of a yoke 17, which is furnished with certain tools to be hereinafter described, and is formed with a shank 18 vfor rigid attachment to the tool holder 14. On one armv 19 of the yoke is secured, by means of bolt 20, a cutting blade 21 adapted to operate against the outer surface of the tubular blank 16 to reduce the thickness thereof. Assuming that the blank is to be cut into packing rings, for example, the rings whichare used in sets of six in the air pumps of air brake systems, thejig is provided with means for cutting, and `finishing in one operation three such rings. The ring `A (Figs. '5, 7 and 8) is beveled for its entire cured to the tool support, preferably in angular relation with the blank operated upon, is a cutting tool 27 which operates to reduce the thickness of the blank from the inside. It is adjustably secured to the tool support by

bolts

28, 29, the latter of which passes through an elongated slot 30 in the cutting tool 27. The arm 31 of the yoke has an opening 32 therethrough in which are arranged

transverse cutters

33, 34, 35, spaced apart Aby spacing blocks 36, the blocks and cutters being held in rigid relation in the yoke by any suitable means, for example, by means of the wedge key 37. The cutters are arranged with their cutting edges out of line with each other so that they come into contact with the work one after the other. The ring B is not severed from the blank until after the ring A is cut. The third ring, C, is cut off' after B has been cut. In the preferred embodiment of my invention the severing of the rings is accomplished by moving the tool holder 14 transversely on the turret in the direction indicated by the feathered arrow in Fig. 1. This movement brings the

transverse cutters

33, 34, 35 into operative engagement with the tubular blank 16, and moves the cutting tool 21 away from the blank. The tool 27 operates on the side of the blank adjacent the transverse cutters so that this tool does not interfere with the movement of the jig necessary to make the transverse cuts. Preferably the jig is provided with a finishing member, the purpose of which is to smooth off the burs made by the

transverse cutters

33, 34, 35. 38 is a rocking member pivoted on a stud 39 between ears 40 on the arm 31 of the yoke. The rocking member is provided withl ay fork 41 in which is pivoted on shaft 42 a roller 43 having the general contour of the blank after it has been cut by the tool 21. The smoothing or finishing roller may be applied to the blank during the operation of cutting off theJ rings in the manner best shown in Fig. 7. The roller has a beveled surface 44 adapted to bear against the beveled surface a of ring A, a beveled surface 45 adapted to bear against theJ beveled surface b of ring B, and a cylindrical surface 46 adapted to bear against theJ cylindrical surfaces of rings B and C.

Operation: The work which may be a tubular blank of Babbitt, or other metal or metal composition used for packing rings, is held in the revoluble chuck 13 in the usual manner. The jig is moved toward the blank by the forward movement of the turret carrier 12 until the

arms

19, 31 of the yoke stand on opposite sides of the blank. This brings the tool 27 in contact with the inner surface of the blank and the tool 21 in contact with the outer surface. The end of the blank is reduced in diameter both from the inside and outside and shaped as shown in Fig. 3. To cut the shaped end of the blank into rings, the tool holder 14 is moved transversely on turret 11` bringing the blanks against cutters 33 34 and 35 so that the rings A, B and C are successively severed from the blank. During this operation the finishing roller 43 is pressed against the partially cut rings smoothing theouter surfaces of the same and removing any burs which may be raised by the operation of making the transverse cuts.

In Figs. 9 to 13, inclusive, I have shown the jig modified so that it will produce packing rings of the sort known as the King type of packing. A set of this type of packing ordinarily consists of two two-part rings D, D. The rings are cut from a blank consisting of two roughly semi-cylindrical over-lapped pieces 47, 48 (Fig. 12). The device shown in Figs. 9, 10 and 11 may be in all respects like that shown in the preceding figures (and corresponding parts are correspondingly numbered in the drawing) except that the device has a single transverse cutter 49 instead of three

cutters

33, 34, 35 of the other form; the transverse cutter 49 being held in place in the yoke by means of two blocks 50, 51.

While I have described my invention in certain preferred embodiments, it will be understood that the device might be modified in other respects than those shown without departing from the invention. For example, if the device were constructed for use on a lathe in which the tool holder does not have transverse movement, the

cutters

33, 34, 35 might be arranged so as to be movable in the yoke to and from the work. I

wish it to be understood, therefore, that the invention is not considered as being limited to the precise constructions, arrangements and devices shown except so far as certain of the claims are expressly so limited. The claims refer to the blank as tubular. I mean by this term to cover a twopart blank such as is shown in Fig. 12, as well as the one-piece blank first referred to in the specification.

' In the description and in certain of the claims I have used the term "jig to designate a simple form of tool-holding device provided with one or more cutting or polishing tools that may be applied to a lathe in its operative position as a whole.

I claim:

1. In combination with means for holding and giving axial rotation to a tubular metal blank, a jig provided with tools to operate on the outside of the blank, and a cutting tool to operate on the inner surface thereof; said ig being adapted to be moved laterally with respect to said metal blank to move said tools into and out of operative engagement with said blank.

2. In combination With means for holding and giving axial rotation to a tubular metal blank, a jig having a pair of arms adapted to extend on opposite sides of the blank and provided with tools adapted to operate on the outer surface of the same, and a cutting tool arranged between said arms adapted to operate on the inner surface th-ereof; said jig being adapted to be moved laterally With respect to said metal blank to move said tools into and out of operative engagement with said blank.

3. In combination with means for holding and giving axial rotation to a tubular metal blank, a jig having a pair of arms adapted to extend on opposite sides of the blank provided with tools adapted to operate against the outer surface of the same, a tool support between said arms, and a tool adapted to operate upon the inner surface of said tubular blank and formed so as to permit angular adjustment on said tool support.

4. In combination with means for holding and giving axial rotation to a tubular metal blank, a jig provided With-a cutting tool adapted to operate upon the inner surface of the blank at one point thereof to reduce the thickness of the blank from the inside, and a cutting tool to simultaneously reduce the thickness of the blank from the outside; said jig being adapted to be moved laterally with respect to said metal blank to move said tools into and out of operative engagement with said blank.

5. In combination With means for holding and giving axial rotation to a tubular metal blank, a jig provided with a cutting tool to reduce the thickness of the blank from the inside, and a cutting tool arranged diametrically opposite the first-named tool to simultaneously reduce the thickness of the blank from the outside and to bevel the end of the same; said jig being adapted to be moved laterally with respect to said metal blank to move said tools into and out of 0perative engagement with said blank.

6. In combination With means for holdino and giving axial rotation to a tubular metal blank, a jig provided with a cutting tool to reduce the thickness of the blank from the inside, and a cutting tool to simultaneously reduce the thickness of the blank from the outside and to form tWo bevels on the same, one at the end and one spaced a trifle from the other; said jig being adapted to be moved laterally with respect to said metal blank to move said tools into and out of operative engagement With said blank.

7 In combination With means for holding and giving axial rotation to a tubular metal blank, a jig provided with a cutting tool to reduce the thickness of the blank from the inside, a cutting tool to simultaneously reduce the thickness of the blank from the outside, and transverse cutters adapted to be moved into engagement with the blank to sever the same into rings; said being adapted to be moved laterally With respect to said metal blank to move said tools into and out of operative engagement with said blank.

8. In combination with means for holding and giving axial rotation to a tubular metal blank, a jig provided with a cutting tool to reduce the thickness of the blank from the inside, a cutting tool to simultaneously reduce the thickness of the blank from the outside and to bevel the end of the same, and transverse cutters adapted to be moved into engagement With the blank to sever the same into rings; said jig being adapted* to be moved laterally With respect to said metal blank to move said tools into and out of op` erative engagement With said blank.

9. In combination with means for holding and giving axial rotation to a tubular metal blank, a jig provided with a cutting tool to reduce the thickness of the blank from the inside, a cutting tool to simultaneously reduce the thickness of the blank from the outside and to form tWo bevels on the same, one at the end and one spaced a triiie from the other, and transverse cutters to sever the blank into rings, one of said cutters operating against the blank between said bevels.

10. In combination With means for holding and giving axial rotation to a tubular metal blank, a jig provided With a cutting tool to reduce the thickness of the blank from the inside, a cutting tool to simultane ously reduce the thickness of the blank from the outside, transverse cutters to sever the blank into rings, and a finishing tool to remove burs. j

11. In combination with means for holding and giving axial rotation to a tubular metal blank, a provided With a cutting tool to reduce the thickness of the blank from the inside, a cutting tool to simultaneouslyv reduce the thickness of the blank from the outside, a rocking device on said jig, and a nishing roller on the rocking device having a contour corresponding to the contour of the cutting blank.

l2. In combination With means for holding and giving axial rotation to a tubular metal blank, a jig provided With a cutting tool to reduce the thickness of the blank from the inside, a cutting tool to simultaneously reduce the thickness of the blank from the outside and to bevel the end of the same, transverse cutters to sever the blank into rings, a rocking device on said jig, and a finishing roller on the rocking device having a contour corresponding to the conto-ur of the cut blank.

13. In combination with means for holding and giving axial rotation to a tubular metal blank, a jig provided With a cutting tool to reduce the thickness of the blank from the inside, a cutting tool to simultaneously reduce the thickness of the blank from the outside and to form two bevels, one at the end of the blank and one spaced a trifle from the other, transverse cutters to sever the blank into rings, one of said cutters operating between the two bevels, and a finishing roller having a contour corresponding to the contour of the cut blank. 14. In combination with means for holding and giving axial rotation to a tubular metal blank, a jig provided with a cutting tool adapted to reduce the thickness of the blank from the inside, and with a plurality of transverse cutters adapted to be moved into contact with the blank and arranged so as to cut off rings from the blank successively, said first-named cutting tool being adapted to be moved out of operative contact with the blank before said rings are cut off.

15. In combination with means for holding and giving axial rotation to a tubular metal blank, a jig provided with a plurality of transverse cutters arranged so as to cut off rings from the blank successively, and with a finishing roller having a contour corresponding to the contour of the blank.

16. In combination with means for holding and giving axial rotation to a tubular metal blank, a jig provided with cutting tools, a rocking device on said jig, and a finishing roller revolubly mounted on said rocking device.

17. In combination with means for holding and giving axial rotation to a tubular metal blank, a jig comprising a yoke, a cutting tool on one arm of the yoke adapted to reduce the thickness of the blank from the outside, a plurality of transverse cutters secured to the other arm of the yoke arranged so as to cut off rings from the blank in succession, and a vtool arranged between the arms of the yoke adapted to operate against the inner surface of the blank.

18. In combination with means for holding and giving axial rotation to a tubular metal blank, a jig comprising a yoke, a cutting tool on one arm of the yoke adapted to reduce the thickness of the blank from the outside, a plurality of' transverse cutters secured to the other arm of the yoke arranged so as to cut oli' rings from the blank in succession, a rocking device on the arm having the transverse cutters, and a finishing roller on said rocking arm.

19. In combination with means for holding and giving axial rotation to a tubular metal blank, a jig comprising a yoke, a cutting tool on one arm of the yoke adapted to reduce the thickness of the blank from the outside, a plurality of' transverse cutters secured to the other arm of the yoke arranged so as to cut ofl" rings from the blank in succession, a rocking device on the arm having the transverse cutters, a finishing roller on said rocking arm, and a cutting tool having capacity for angular adjustment arranged between the arms of said yoke.

20. In combination with means for holding and giving axial rotation to a tubular metal blank, a jig comprising a yoke, a cutting tool on one arm of the yoke adapted to reduce the thickness ofl the blank from the outside and bevel the end of said blank, a plurality of transverse cutters fixed in the other arm of the yoke with their cutting edges in stepped relation so that they cut oli? rings from said blank successively, a finishing roller having a rocking support and arranged on the same arm of the yoke with the transverse cutters, a tool support between the arms of said yoke, and a tool connected for angular adjustment with said tool support.

21. In combination with means for holding and giving axial rotation to a tubular metal blank, a jig comprising a yoke, a cutting tool on one arm of the yoke adapted to reduce the thickness of the blank from the outside and form two bevels thereon, one at the end of the blank and the other spaced a trilie from the first named bevel, a plurality of transverse cutters xed in the other arm of the yoke with their cutting edges in stepped relation so that they cut ofi' rings from said blank successively, a finishing roller having a rocking support and arranged on the same arm of the yoke with the transverse cutters, a tool support between the arms of' said yoke and adjustable with respect to the yoke, and a tool connected for angular adjustment with said tool support.

ALFRED S. ABBOTT.

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