US486984A

US486984A - Tube-flanging machine

Info

Publication number: US486984A
Authority: US
Publication date: 1892-11-29
Anticipated expiration: 1909-11-29

Description

(No Model.) Y. 2 sheets-sheet 1.

TUBE, PLANGI-NG MACHINE.

No. 488,984. Patented Nov. 29,1892.

" 2 sheetssheet 2. A

J.D.MU8PHY. TUBE PLANGING MAGHINB'.

` No; 486,984. Patented Nov. 29.1892.

UNITED STATES PATENT OFFICE.

JOHN D. MURPHY, OF CHICAGO, ILLINOIS.v

TUBE-FLANGING MACHINE.

SPECIFICATION forming part of Letters Patent N o. 486,984, dated November 29, 1892.

Application filed February 15, 1892. Serial No. 4Z1|603| (N0 modem l To all whom t may concern.-

Be it known that I, JOHN D. HURPHY, a citizen of the United States, residing at Chicago, in the county of Cook and State of I llinois, have invented a new and useful Improvement in Tube-Flanging Machines, of

ends of the tubes against the tube-sheets.

My object is, further, to provide, in combination with the upsetting mechanism, means for shaping the iiange into a bead, improved means for securing the implement in a tube,

and still further to provide a machine or implement for the purposes described which shall be particularly quick and eeotive in its operation, readily adjustable into operative position, strong, durable, and comparatively ineXpensive to manufacture.

In the drawings, Figure l is a broken sectional view of the end portion of a boiler, showing tubes partly in section and partly in elevation and illustrating my improved device in longitudinal section and secured in operative position; Fig. 2, an enlarged view in elevation of the rotary upsetter and header; Fig. 3, a view in elevation of a bar or frame forming part of the construction shown in Fig. l; Figs. 4 and 5, views in elevation, re-

spectively, of an expanding sleeve or mandrel and a tubular wedge or expander forining part of the improved mechanism for securing the device in operative position; Fig. 6, a longitudinal section of the expanding sleeve or mandrel, the section being taken on line 6 of Fig. 7; Fig. 7, a section taken on line 7 of Fig. 6 and viewed in the direction of the arrow, and Fig. 8 a broken sectional view illustrating a simplified construction of my improved device applied to a boiler-tube.

Ais atube-sheet,and BBboiler-tubes. Before my device is brought into use for upsetting and beading the ends of the tubes the tubes are cut to proper lengths, inserted at their ends through the openings in the tubesheets, and a shoulder t formed upon each tube at the inner or water side of the tubesheet by means of a suitable tube-expander` C is securing means for fastening my improved device in operative position. It comprises a sleeve s, formed, preferably, 1n four longitudinal segments held together by ex-` receive an internallythreaded nut s4, which is held secure against turning. Extending through the sleeve is a rod q of a diameter which permits it to pass freely through the openings s2 and provided at one end with a thread q to engage the thread of the nut s4. The opposite end of the rod is squared, as shown at q2, and adjacent to its squared end the rod is threaded, as shown at g3. Surrounding the rod q is a tubular Wedge or conical expansion-core p, adapted to enter the Iiaring opening in the sleeve s. At the large end of the tubular wedge p is a washer o, which is held against longitudinal movementk upon the rod q by a pin o. On the outer surface of the sleeve s, near its outerl iiared end,is a circumferential bead or shoulder S5. In their normal state the segments of the sleeve are contracted by the springs r, so as to reduce the diameter of the sleeve and permit it to be readily inserted in a tube B. The sleeve is inserted into a tubeB until its shoulder S5 registers with the inner circumferential socket of the tube formed under the bead t. The rod q is turned from its squared end q2 to travel through the nut s4, and causes the Washer or collaro to bear against the end of the tubular wedgep. The wedge p is thus forced into the sleeve s, and by bearing against the sides of the fiaring passage s expands the sleeve against the inner surface of the tube B and causes the shoulder 35 to enter and engage the bead-socket t. lVhen the sleeve is thus expanded, it and the rod q are held rigidly inplace.A

IOS)

D is a frame having an elongated slot n to receive theV rod q, a threaded opening n for a set-screw m, a threaded opening n2 to receive the threaded end portion of a shaft Z,

and an opening n3, affording a bearing for a shaft 7c. The set-screw m is provided with a sWiveled base-block m', adapted to iit upon the end of a tube, as shown, and at its opposite end the set-screw is squared, as shown at m2. The outer end of the shaft Z is squared, as shown at Z, and near its inner end it is provided with a shoulder Z2. Extending from the shoulder Z2 is a threaded reduced portion 0r stem Z3 of the shaft Z, carrying a ring Z4. The ring Z4 is held against a ferrule Z5, interposed between it and the shoulder Z2 by a nut Z6. The ring Z4 fits closely but loosely into a tube B and affords a bearing for the shaft Z. Turning upon the shaft Z is a head or circular block t', provided around its periphery at one side with cogs t. In the face of the block t' is a deep circular recess Z2. Crossing the recess t2 are radially-extending shafts i3, located equidistant from each other and 'carrying Wheels Zz, which revolve in the recess Z2. The peripheries of the wheels h are concave, as shown, and alternate Wheels-that is, every second wheel of the series-are formed on their outer sides with circumferential cutting-edges h. Upon the shaft Z at the side of the blockql is a loose Washer Z7 and at the'side thereof adjacent to the yoke D is a loose Washer Z8. Confined between the Washers Z7 Z8 is a spring Z9,Which operates normally to press the rotary block t' in the direction away from the yoke against the shoulder vZ2 on the shaft Z. On the shaft Za is a pinion Za', which meshes with the cogs 1l 0n the block t'. At its outer end the shaft Za is provided With a crank k2.

In the construction of boilers the tubes B are equidistant apart, so that each tube is surrounded by a series of tubes located at a uniform distance radially from it. The frame D is so arranged that it may be adjusted at its slot n upon the rod q, so that the upsettingwheels h may engage one of the tubes nearest to that in which the rod q is secured or a tube farther away. To adjust the device in position,the `frame D is passed at its socket n over the rod q and a clamping-nut Q4, placed upon the threaded end Q3 of the rod. The set-screw m and the nut g4 are then turned to clamp the yoke firmly in position to press the upsetting-Wheels against the tube to be operated upon and to contract the spring Z9. Turning of the crank k2 produces rotation 0f the pinion Zr and block t', causing the Wheels hto travel around the end of the tube. Pressure of the spring Z9 thus exerted against the ends of the tube causes the latter to be upset by the concave wheels h. The force of the spring Z9 may be augmented from time to time by tightening the nut Q4. As the end 0f the tube is upset the cutting-edges h on the Wheels hshave off metalat the outer circumferential edge of the ange produced by upsetting the end of the tube and form the bead shown. In the construction shown in Fig. 8 the rotary block carrying the upsettin g-Wheels is mounted directly upon the rod q, which also thus performs the function of the shaftZ ofthe device shown in Fig. l. This machine is of a more simple construction than that described; but it necessitates adjusting the securing means in a tube each time the device is to be operated. The crank 7a2 is fastened directly upon the block i vand. the frame D, shaft Za, and set-screw m are dispensed With. In the use of this simpler construction, as the securing means C is placed in each tube, the separate tube-expander referred to above for forming the shoulder t may be dispensed with, and the shoulders t produced by the expansion of the bead S5 on the sleeve s. The construction shown in Fig. l is preferred because I ind it takes less time to produce the shoulder t with an expander in common use than to remove and replace the securing means Q each time the upsetting mechanism is to be operated.

While I have shown my improved device in the form I prefer to employ, it may be modified in the matter of details of the construction Without departing from the spirit of my invention as defined by the claims.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a device for upsetting the ends of tubes, the combination, With a support and vmeans for securing the same in operative po` sition, of a shaft on the support, a rotary head on the shaft, provided with revoluble upsettin g-Wheels to engage and travel upon the tube end, a confined spring upon the shaft, bearing against the rotary head to press the upsetting- Wheels against the tube end, tensioning means upon the shaft for the said spring, and means for turning the said head, substantiallyas described.

2, In a device for upsetting and beading the ends of tubes, the combination, with means for securing the device in operative position, of a series of rotary upsetting and beading wheels mounted in revoluble bearings to engage and travel upon the tube end, one or more wheels of the series being provided with a cutting-edge h to shave off the edge of the tube during the beading operation, and means for pressing the upsetting and beading Wheels against the tube end and for revolving the bearings, substantially as and for the purpose set forth.

In a device for upsetting the ends of tubes, means for securing the device in operative position, comprising, in combination, an expansible sleeve adapted to enter a tube provided with an annular shoulder s on its outer circumference and a conical opening, and a conical expansion-core to enter said opening and expand the sleeve against the-inner circumference of the tube and cause the shoulder 35 to form a circumferential bead t on the tube and engage the groove under the said bead, substantially as and for the purpose set forth.

4. In a device for upsetting the ends of IOC IIC

rif

tubes, the combination, with a support and support for clamping the upsetting mechanmeans for` securing it in a tube, of a frame ism against a tube end, substantially as deadjustably mounted between its ends upon scribed.

the su pport, a setfsorew upon one end portion JOHN D. MURPHY. of the frame, having a base to engage a tube In presence ofend, upsetting mechanism on the opposite end M. J. FROST,

portion of the frame, and means upon the- W. N. WILLIAMS.