US867333A - Pipe-flanging machine. - Google Patents

Description

No. 867,333. PATENTED 'ocT'." 1, 1-907,

J. H. ALLEN & F. M. PATTERSON. PIPE FLANG ING MACHINE,

APPLICATION FILED MAR. 26, 1907. I

3 SHEETS-SHEET 1.

PATENTED ocT. 1, 1997. J. H; ALLEN 33 F. M. PATTERSON.

PIPE PLANGINGMAGHINE.

APPLICATION FILED MAR. 25, 1907.

. 3 sums-3113M 3,

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nnrrsn STATES Parana or es.

" JOHN H. ALLEN AND FRANKLIN M. PATTERSON, OF PHILADELPHIA, PENNSYLVANIA;

PIPE-FLANGING MACHINE.

Patented Oct. 1, i907.

Application filed March 25,1907. Serial No, 364,254.

Our invention hilSulOiOlGllCG to pipe flanging machines and consists of certain improvements which are fully set forth in the following specification and shown in the accompanying drawings which form a part thereof. 2 I

\ The object of our invention is to provide mechanical appliances which will be easily and speedily controlled and which, during their manipulation, will produce the expansion of the end of the pipe in the flange or ring to which it is to besecured, the said operation being accomplished in an inexpensive manner and with the most satisfactory results as to strength, tightness of joint;

and durability.

Our invention consists essentially in the employment of a sectional expanding die of special construcproper relation during the expanding operation.

' inFigs. l and'd; "Fig. 9 is an enlarged view of a portion More broadly, our invention comprehends the expanding die when formed with projections or ribs, intcgral or otherwise, upon the outer surfaces of the sections'and which when in alinement, form annular projections which exertdirect outward pressure upon the internal portion of thepipe for expanding the parts thereof which are in contact with the expanding die more or less into the annular recesses or grooves on the internal face of the flange to'which the pipe is to be united, the contact being especially tight at the corner edges of thesaid grooves. v

Our invention further consists in providing a suitable framework having means for-supporting the sectional hanging machine embodying our invention; Fig. 2-is an end elevation of same; Fig. 3- is an elevation of our improved expanding die with a portiorrre'inoved; Fig.

4 is an end elevation ofsame; Fig. 5 is an elevation of annodified form'ofou-r improved expanding die witha,

portion removed; Figs. 6 and 7 illustrate other modifications in the cross section of segments of the expanding die; Fig. 8 is an elevation of a pipeand flange with part 7 in sceti on united by the employment of the dies shown shown in Fig. 7.

of the joint thereof; Fig. 10 is an elevation of the pipe and flange when formed by the employment of the dies shown in Fig. 6; Fig. 11 is an enlarged view of the joint in same; and Fig. 12 is an elevation of a pipeand flange with part in section whenunitcd by the form of dies A isthe base orbed oithe machine and maybe of any 7 construction.

13 is a cast steel housing and is bolted to the bed.- Sleeved in this housing B is a hydraulic cylinder 0, the same being clamped in position by means of a large of the cylinder is sustained by a divided support B clamping the cylinder and bolted to the bed.

E is a piston working in the cylinder and is secured to the piston rod or plunger'E, which, for accuracy in alinement, is not only'cxtended through the forward head of the cylinder but also through the rear head. It is evident, however, that various forms of hydraulic cylinders and plungers may beemployed for the purposes of our invention, but we have shown herewith that form which we have found excellently adapted to the purposes of our tool. Wateror other power is applied to this cylinder at either. end as desired for reciprocating the piston and plunger. The end of the plunger is provided with a'sock'et G in which the arbor H is secured in a detachable manner so that various sized arbors may be employed.with the same machine.

F is a cast steel housing having, a large circular aperture preferably formed with steps, as at 'i. This housing is bolted to the bed frame and is in alinemcnt with the housing B and connected to it by strong bolts f whereby it is accurately and rigidly held in position with relation to the hydraulic cylinder. The axis of the plunger and arbor is preferably central with the aperture in the housing F. Fitted to the aperture of the housing is a removable abutment ring I which is also stopped on its periphery to cooperate with the stops on the housing F as indicated in Fig. 1. This abutment ring I is annular in form, having a central tapering segments arranged in a circle so as to form an annular die of special construction.- The various segments making'upthe expanding (lie arehcld together by suitable springs L which are circular in form and are. adapted :to seats or aperture s1 in the/segments.

The spring rings are prcfe1'ably,of'solid steel wire split at one place in their circumference as indicated in dotted lines in. Fig. 4. The cross section of thc scg- I ments is clearly shown in the drawings and comprises against the abutment ringI as shown .in Fig.- 1, said correspond to the tapering of the arbor H. Furthermore, the segments are transversely curved on their inner and outer surfaces so thatf when the several segments K making up the die are arranged side by side in a circle, the ultimate or complete die is substantially conical, that is to say it has a conical-central aperture and its outer diameter is larger at one end than the other although the particular operating part of .the die adjacent to the ribs k ispreferably made cylindrical except for the extension of the said ribs, so as to be in practical alinement with the interior surface of the pipe when the expanding operation is completed.

The pipe is shown at P and the pipe flange 1s indicated at T, in Fig. 1. Referring to Fig. 8, it will be seen that the union of the pipe and the pipe flange consists in having theinterior of the pipe expanded into one or more annular grooves at p and thereby forcing those portions of the pipe outwardly into the grooves t of the pipe flange. 1

By referring to Fig. 9, it will be seen thatthc actual joint, both for strength and tightness, is produced by the sharp corner edges of the grooves t of the pipe flange being embedded in the metal of the expanded portion of the pipe. It will, morcover bc seen that the pipe itself is not expanded tightly into the cylindrical portion of the pipe flange nor into the bottom of the annular groove t thereof. Such expansion is not at all necessary as we have found by careful experiment, and moreover, by avoiding this, there is less power necessary in producing the joint, and consequently, a very much smaller machine is required.- Furthermore, it is evident that as there .is more or less elasticity to metal, the metal of the pipe will have no reflex action where the expansion does not attempt to force it'up to a continuous contact with the pipe'flange, and consequently, the actual joints at the points S S (Fig. 9) are more secure and tight than would be the case if an attempt were made to force the metal to tlsebottom of the 'groovesand against the inner-surface of the'flange throughout its length. Such construction is however somewhat modified when the pipe is of very ductile metal, such as copper, which has a tendency to retain its set position after being subjected to considerable pressure; but for wrought iron or steel pipes, we have found it more desirable that contact with the bottom of the grooves and the inner surface of the flange throughout their length shall not be employed.

When employing our improved IIIZLChlIIGfOl expand ing pipe in its flange, the arbor H together with its operating mechanism is withdrawn from the die J. i

The pipe with the flange in place is then brought to the position shown in Fig. 1 and may be heldby hand or any suitable convenient device. The expanding die .I is then placed into the end of the pipe and with the flanges K resting against the annular abutment ring I, and the arbor is then driven forward through the flangng die to expand its sections and the annular ribs k thereof are forced outward against the internal surface of the pipe, producing specific expansion thereof at localized places as indicated in Figs. 8 and 9. When the arbor is Withdrawn, the die is retained by the pipe sufliciently long to release the die from binding upon the arbor, and after the withdrawal of the arbor, the die may be withdrawn from the pipe and the operation repeated'.

It is evident that while we have shown two of these annular ribs k on the die, one or more may be employed as desired. Two are preferable, but insome cases one would be suflicient. For finish and further strengthening of the joint, we may provide two additional annular ribs upon the die sections, as indicated at k, and this will produce the expanded portions at m, m shown in Fig. 10 adjacent to the front and rear edges of the pipe flangeso that they will make the pipe fit tightly at these points as well as in the actual grooves in the pipe flange. It is, of course, evident that either .one or both of said flanges it may be employed as desired. 3

In some cases, the joint may be made as shown in Fig. 12. In this case, there is only one annular groove in the pipe flange. The face side, however, of the pipe flange is recessed adjacent to its inner edge as at n. The preferred form of expanding die for this character of joint is shown in Fig. 7, in which the annular ribs I: produce the expansion of the pipeto force it into the annular groove of the flange and in which the larger of the ribs 1: produces the expansion of the pipe adjacent to the grooved edge of the pipe flange at n, and the smaller annular rib 1; produces a slight expansion of the pipe at n adjacent to the opposite end of the pipe flange. This illustration also indicates the use of a copper pipe and in which it is expanded tightly to the interior of the flange.

In the-operation of llanging pipe by our improved machinepit is evident that the expansion of the die J will produce some separation between the several segments, and consequently these points of separation will not permit the die to act upon the pipe with the same effect as if there were no such gaps. To overcome this possible result, the expansion is preferably accomplished by two operations, that is to say, first expanding the die'within thc pipe to produce approximately the proper expansion, then collapsing I the die somewhat, turning it slightly and once more expanding it to complete the operation before withdrawing the tool. In the use of the machine, it is preferable thati-t shall be operated in the customary manner whereinthere are two accumulators, one to produce the rapid movements of the plunger wherein great power is not required, and the other to apply the final power as when producing the final results desired.

In Fig. (i, we have shown the spring L at one end of the die segments as placed over hooked portions constituting seats in place of being put through the body' of the die as shown in the other end and also in Figs. 3 and G. A

In Fig. 5, we show the ribs of the die formed of separate parts L which also constitute the springs or at least a part of them for holding the die segments together. In this manner also there will be less breaking of joints in the alincment of the ribs. These parts L correspond to the ribs 1; and are included under the term rib employed in the claims.

By carefully examining;- Figs. l0 and ll, it will be seen that the actual grooves L in the pipe flange are not rectangular in Fig. 8, but that tlie'slmulders 0r corners of these grooves are turned with rectangular lateral grooves t which form abrupt shoulders for the lodgment of the metal. It will be seen from Fig. 1]. that in this case, not only do we have the annular corners of thc pipe flange entering the metal ol' the pipe, but we also have oppositely directed portions ol the material entering the grooves in the pipe. llange,

,thereby forming a double joint between the pipe and the flange and still without the main body of p the pipe flange and the bottom of its groove being reached by the metal of the pipe. This joint is perhaps better -than the joint shown in Fig; 8 and is not materially more expensive. 'lhe-principle 0i construction and mode of forming is, however, substantially the same.

We have described several joints between the pipe and flange which are produced by the employment of our improved dies and machine, and while we make no claim to said joints in'tliis application, said joints will form subject matter of separate applications.

While our invention is designedi'or large work in which a motive power, such as a hydraulic machine, is employed for operatinp the dies, it is evident that the machine may be made in suitable portable form in which the arbor might be driven in by hand power, and therefore we do not conline ourselves to that forni of our machine in which the die and arbor are combined other than by their direct connection in the act of expanding. v

While We prefer the construction shown as being most excellently adapted for the purposes of our invention, it is evident that the details maybe modified without departing irom the spirit of the invention.

Having now described our invention, what we claim as new and desire to secure by Letters Patent, is:

1. 15 pipe tlnngine' device consist of an annular die divided into sections and nuving its ions provided with circmnfercntinl ribs for acting on the interior surl'ncc of the tube to be expanded, combined with means for ex panding the nnnulur die. and menus indc n-ndent of the annular die iixcdly supported independent of the work acted upon tor snstnining the die against longitudinal movement. toward the pipe or the flange in which it is to be expanded and as guide for the pipe for insuring its propcr adjustment longltudiunlty with relation to the die.

2 A pipe flung-in device consisting of an expanding annnlnr die divided into sections and having the outer sur faces of its sections provided with circumferential relninint; flanges and rihstruclurc for ncting on the interior surfnce of the tube to be expanded and their inner surfaces vtapered to form a tnpcred aperture through the die, comhin'cd with a tapered :irhor to expand the die, on nuniilnr frame fixedly supported independent of the work and die and hnvilu, a tint annular stil'l'uce ngninst which the thing-es of rne die rest to hold the die against longitudinal movement townrd the work while permitting lntcrul adjustment of the die sections and of .the die as a whole relatively to the frame and powcr devices connected with the :innuln r fixed frame for reciprocating the tapered nrbor.

8. In a pipe Hanging nincliine, an expanding annular die divided into sections and hnvim, the outer surfaces of it's sections provided with circuml'erentin] ribs for acting on the intcrinr surface of the tube to be expanded and their inner so: lnrcs tapered to form a tapered aperture through the die, combined with means for expanding the annulnr dic consisting of u tapering arbor, power devices for reciprtu-zlllng thc nrbor. lixcd moans for lu'ildirm,- the annular die in :ilincincnt with the nrbor and supporting it against movement away from the power devices when the arbor is moved forward in tho nct of expanding the die.

4. A pipe llnueine' device consi .in,:; of on expanding on nulor die divided into sections and having; the outt url'nccs oi its sections provided with at least three circumt'oreutiol ribs for noting on the interior surface of which the outer ribs arc of loss height than the inner ribs of the tube, to be expanded, combincd with lll it'ilS for expanding; the annular die and holding it in lixed position, and a circulur spring u'm-cd to the several sections for normally holding lhcm in collnpsed position. i

.7. pipc longing die consisting of an nnnulnr structurc radially divided into sections and bnvinp; the outer surface of the sections provided with an outwardly extending unnulnr rib of small cross section for noting upon the interior surface of the pipe within the flange, combined with a lixcd support sustained in position independently of the work to hold the die 'niust longitudinal movement, nnd power devices connected with the lixed support for expanding lhc dic nnd without putting pressure upon the pipe in the dircclion of its length.

d. A pipe hanging die consisting of an annular flanged structure rndinll y divided into s Lions and, having the outer surface of the sections provided with an outwardly extending; nunulnr rib -ol' smnll cross section for acting upon hc interior surt'ncc ot' the pipe within the 'ihrngc and radial dances to prcvonl longitudinal shitting, coinbincd with an annular permanently fixed abutment ring supported independent of the work having :1 flat l'nce against which the flanges rest and rel t'ively to which the die may adjust itself in all transverse directions, and n. tapering nrbor l'or c.\'pnmlin;. the die.

7. ln :1 pipe thine-inc machine, the combination of n iixed noutmcnt ring, supported iudrmemhant oi the work, a llnne'ed dic rcmovnhly resting inst the nbntmcnl. ring and divided rndinlly into sectioi lll(l said sections having their snmllcr ends extended through the :ihutmeni ring and provided with rircuml'orenlinl ribs beyond the ring, ml: is independent of tho abutment ring; to hold the sections of the die io; '(.l'll(!t' and an :irbor for expanding the din.

s. ln'n pipe Hanging machine, the ('tllill llllililllll or" a hydraulic cylinder and plunger, :1 housing; rigidly connected to the cylinder, nu abutment ring rcniovn hly titled to the housii n thinned die rusting against the abutment ring,

their smaller ends extended through the nbuimcnl. ring, and housing and provided with circumi'creniinl ribs ieyond the ring, and un nrbor for expanding the die (1; ried by the plunger.

1). In it pipe tlnnging mnebinc. :1 bed combiucd with two annular housings bolted to the bed, a hydraulic cylinder secured lo one of the hous t bolls connecting the two housings, an abutment riue' .irried by the other housing, :in expanding nnnulnr thinning dic resting iguinsl. the nhutmcnl ring. a plunger tor the cylinder, and lnpor :lrbor cnrricd by. the plunger and movnblc through the ihlllgillg' dic.

In testimony of which invention, wc hnve hereunto set our hands i I .lUllN ll. ALLEN.

FRANKLIN M. IA'P'IIGHSON. Witnesses:

n. M. lfimmr, .\l, r. Junscorm.

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