US364425A - Island - Google Patents

Description

3 Sheets-Sheet 1.

(No Model.)

J. T. MAOLEOD.

.FLANGING MAGHINE.

Patented June 7, 1887.

N. PETQRS. Phmwl-hhognpvm, Willinginn, D. C.

(No Model.) 3 Sheets-Sheet 2.

. J. T. .MAGLEOD;

FLANGING MACHINE. No. 364,425. Patented June 7, .1887.

n PETERS. Photo-Lillwlnpher. Wznhlngion. 0.0

3 Sheets-Sheet 3.

(No Model.)

J. T. MAGLEOD. PLANGING MACHINE.

No. 364,425. Patented June 7, 1-887,

ixumaw NITED STATES PATENT Orrrcre.

JOHN .T. MAOLEOD, OF PROVIDENCE, RHODE ISLAND.

'FLANGING- MACHINE.

SPECIFICATION forming part of Letters Patent No. 364,425, dated June 7, 1887.

Application filed February 15,1887.

T aZZ whom it may concern:

Be it known that I, JOHN T. MAoLEOD,acitizen of theUnited States, residi ng in the city and county of Providence, in the State of Rhode Island, have invented a new and useful Machine for Turning Flanges upon Boiler-Heads or TubeSheets and Similar Plates of Metal, of which the following is a specification.

The purpose of my invention is to provide means of forming from the body of the sheet or plate outside or inside flanges, or both, of uniform thickness without cracking or otherwise weakening the metal. a

It consists, primarily, of the provision of means for holding and turning the sheet while its outer edge is formed into a flange by aroll acting in a tangential are at right angles to the plane of the face of the sheet, and of means of holding and forcing the sheet down uponaseries of vertical rolls pivoted upon the revolving bed of the machine and acting within a central opening in the sheet against the surroundingedge to form a flange around said opening.

structurally my machine may, for the purposes of this speeification,be divided into three principal systems of mechanism, namely: The first systenrcomprises the revolving bed and its operating mechanism, the second system comprises the sheetholding device and its feeding and governing mechanism, and the third system comprises the outside or peripheral flanging-roll with its feed, stop, and operating devices. Of these the firstsystem has added toit, when outside flanges are to be turned, a metal former. Vhen inside flanges are to be turned, in place of the metallic former I use a series of rolls secured upon the bed by vertical pins, about which said rolls revolve independently of the movement of the revolving bed. Ialso provide in the second system, for use in turning inside flanges, a former against which the vertical rolls turn the edge of the sheet surrounding the central opening as the sheet is forced down.

As assembled in the complete machine, the first and second systems are used in turning inside flanges, and the first, second, and third systems in turning the outside or peripheral flange. In the first system I mount upon a vertical shaft inthe framing a circular bed having a plane horizontal face, and I revolve Serial No. 227,667. .(No model.)

this bed upon its shaft by power applied, as shown, through a system of bevel-gears, or in any other suitable manner. In turning the peripheral flange I use a former consisting of a heavy circular body of metal with its upper corner properly beveled or rounded off, and I place this former upon the bed and secure it thereon. In turning the inside flange, or the flange formed around a central opening or man-hole in the sheet, I mount upon the re volving bed a circular plate, upon which I place a series of conical rolls having pins extending through them vertically and through said plate. The rolls are free to revolve about these pins, the plateturning with the bed, and the rolls revolving in the reverse direction when in contact with the edge of the sheet in the process of turning the flange.

In the second system I have a spindle swivcled to a foot provided with branching arms at its lower end adapted to be secured to an annular plate or collar, and provided near its upper end with a rack engaged by a pinion on a cross-shaft j ournaled in the upper part of the framing, the spindle extending up through the top of the frame. The wlloleis raised or lowered in the ordinary way, by means of said rack and pinion, to release the sheet or to clamp it firmly upon the former and revolving bed. This construction is used in conjunction with the first system to form the outside or peripheral flange on the sheet. When the inside flange is to be turned, it is necessary to hold the sheet stationary while the bed and vertical rolls revolve. I then attach to the annular former, which is secured to the arms of the spindle-foot,stop-dogs,which extend upward into the framing and prevent the second system from revolving with the first system. The sheet is forced downward upon the series of rolls by means of the rack and pinion already mentioned. For the purpose of steadying the sheet and preventing it from chattering, I have finger-bars secured to the under side of the supporting-plate and extend in g upward through the framing connected by chains passing over pulleys to weights sufflciently heavy to afford a proper degree of resistance to the downward movement of the plate. V

In the third. system a sliding carriage is gibbed upon-a bed,whieh forms a part of the frame of the machine, and is moved thereon by a feed-screw operated in the well-known manner. A cheek-nut on a threaded shaft regulates the traverse of the carriage. Upon this carriage I hinge a bracket upon pins passing through each side of the carriage, near its top,and through the arms ofthe bracket. From this bracket I suspend a roll by means of a spindle through the latter axially andjournaled in the bracket, thereby permitting the roll to rotate independently in any position of the bracket. The bracket is rotated on its pin-joints by means of a wrench, and carries the roll with it in an arc of ninety degrees perpendicular to the plane of the bed. As an auxiliary to this system, for the purpose of smoothingthesheetwhile turningupthe flange,

I attach or pivot upon the frame opposite the carriage a shaft which carries a smoothing-roll. This roll may be raised to free the sheet. I also attach to the front of the carriage one or more ro1ls,which serve to hold up and steady the edge of the former-plate.

In the drawings, Figure 1 is an elevation of my flanging-machine adjusted to turn the outside flange on a tube=sheet. Fi 2 is a top plan of the same. Fig. 3 is an elevation of my flanging-machine adjusted to turn the inside flange on a tubesheet, and Fig. 4. is a top plan of the same. The remaining figures show details on a larger scale. Fig. 5 is a vertical section, partly in elevation. Fig. 6 is a plan view, partly in section; and Fig. 7 is a corresponding vertical section, partly in elevation.

Similar letters of reference indicate corresponding parts in all the figures where they occur.

I designate the frame of the machine by the letters A A, and that portion forming the bed for the roll-carriage by A. The revolving bed Bis mounted upon a vertical shaft, 1), journaled in the lower part of the frame, and connected at its lower end by bevel-gears and a shaft with a driving-pulley, P. B represents the former on which the outside flange is turned. It is secured upon the bed B and re volves with it.

The roll Q rotates upon its shaft 70, hinged upon the frame at g, to permit the roll to be raised to free the tube-sheet.-

E represents the shaft vertically placed in the upper part of the frame and a swiveling foot which is provided with two or more branching arms, E E E, bolted or otherwise rigidly attached to an annular plate or eollar,F. Said shaft E and its connected parts areraised and lowered by a rack and pinion operated by a hand-wheel, H, as illustrated in the draw ings. The parts of the machine described in the two preceding sentences constitute that portion of the second system used in turning the outside flange.

13 is a second circular plate, upon which I mount a series of conical rolls, D D D, arranged in a circle and loosely pivoted on vertical axial pins (2 d d, as shown in Fig. '3. This construction permits the rolls D D D to rotate in either direction independently of the movement of the bed B and plate B When the inside flange is to be turned, ad ditional parts are made available. There are two or more finger-bars, ff, bolted to the under side of the plate G, and extended upward through the adjacent part of the frame A, and connected by chains 0 c, passing over pulleys s s, with weights W W. The former-plate F, bolted or otherwise rigidly secured to the arms E E E, must for this part of the work be annular. Stop-dogs e e are bolted to the former F, and extend upward into the frame A, and serve to prevent the plate F and its connected parts from turning with the rolls D D D.

Upon the bed Ais gibbed a carriage, M,

which is moved along the bed in the ordinary way by the feed-screw m, operated by the wheel 12. The traverse of the carriage is regulated by a cheek-nut on the threaded shaft n, also connected with the carriage M. A bracket or bar, J, having rigid arms a a, is mounted upon the carriage M, and is rotated on pins 00 :0, pass ing through said arms and the upper part of each side of the carriage. A wrench-lever, L, is adapted to engage the bar J, to rotate it in a quadrant of a circle, of which the arms a a are the radii and the pins an ac the centers of rotation. Upon the bar J, I hang a roll, R, which revolves freely on its axial pin 2.

In the practical operation of my invention, the several systems being arranged as shown in' Fig. 1, to turn the outside or peripheral flange, the tube-sheet X, having been properly heated, is placed upon the former B, and clamped thereon by the plate F and its con nected mechanism, and the bar J and roll It are nowbrought by means of the lever Linto the position shown instrong lines in Fig. 1. Power is then applied to rotate the bed B,the sheet X, clamping-plate F, and its connected parts in the direction indicated by the arrows, and the lever L being gradually depressed by the attendant, the roll R, impinging on the sheet X, rotates, as indicated by its arrow, and is also rotated on the pinszvzr, as axes in a quarter-circle from the full-line position to the dotted-line position shown in Fig. Land by this movement will bend the sheet about the former B to form a flange, as shown by the dotted lines in Fig. 1.

A roll, Q, serves to remove any unevenness in the sheet and to prevent crimping. The rolls V V, mounted upon shafts bolted to the carriage M, Figs. 1 and 2, assist in steadying and holding the former B.

In turning the inside flange, the tubesheet X is clamped between the plates F and G, which are respectively held stationary by the finger bars f f and the stopdogs e a. The plate B, mounted on hollow studs, has the rolls D 'D D secured upon it loosely by the vertical pins (2 d of extending downward through all into the wheel B. The parts being arranged as shown in Fig. 8, power is applied to revolve the opening in the sheet.

wheel B, which carries with it the plate l3 and the conical rolls D D D in the direction indicated by the arrows. The sheet is fed down against the rolls by the rack and pinion, and impinging against the rolls the friction causes them to revolve in the reverse direction, and to bend that part of the sheet about the central opening up against the former F, thereby forming the flange around the central The extreme positions of the sheet and clamping means are indicated by the full and dotted lines in Fig. 3.

In turning the inside flange, the carriage -M is withdrawn, by means of its feed-screw m, from contact with the plate or wheel,the roll R of course moving with the carriage.

I claim as my invention and desire to secure by Letters Patent I. In a Hanging machine, the revolving wheel 13 and its operating means, the plate B,

and a series of conical rolls, D D D, in combi-,

nation with each other and with a clamping device consisting of the plates F G and spindle E, provided with arms E E and a rack and pinion, as shown, the whole arranged for joint operation and adapted to serve, as specithe plate B, and a series of two or more conical rolls, DD,and vertical pins (Z (l, in combination with each other and with a vertical shaft I),

the series has an independent reverse rotary 5 movement upon its axis (1, resultant upon contact with the edge of a sheet of metal, as shown and described.

4. The carriage M, bar J, pivoted thereon, as shown, and roll It, suspended axially from 50 the bar J, as shown, in combination with each other and with the bed A, feed-screw m, and threaded shaft 02, all arranged as shown, to allow both the changing of the radial position of the carriage M and the limiting its inward 5 5 movement by a suitable check-nut on shaft n, as herein specified.

5. The plate F and its supports, in combination with the stop-dogs e 6, plate G, and frame A A, as shown, and adapted to serve 60 as specified.

In testimony whereof I have hereunto set my hand, at Providence, Rhode Island, this 27th day of January, 1887, in the presence of two subscribing witnesses.

JOHN T. MAGLEOD.

\Vi tn esses HENRY MARSH, Jr., J AMES TRIBE.

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