US1315614A - Die for making radiator units. - Google Patents

Description

C. H. TRUE.

DIE FOR MAKING RADIATOR UNITS.

APPLICATION FILED APR. 17. 1918.

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DIE FOR MAKING RADIATOR UNITS.

APPLICATION F !LED APR.17. 1918,

l ,8 1 5, 6 1 4. Patent-ed Sept. 9, 1919.

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UNITED STATES PATENT OFFICE.

CHARLES H. TRUE, OF HAMMOND, INDIANA, ASSIGINOR T0 LOCOMOTIVE SUPERHEATER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

DIE FOR MAKING RADIATOR UNITS.

Specification of Letters Patent.

Patented Sept. 9, 1919.

Original application filed April 10, 1917, Serial No. 161,011. Divided and this application filed April 17, 1918. Serial No. 229,114.

To all whom it may concern:

Be it known that 1, CHARLES H. TRUE, a citizen of the United States, and resident of Hammond, Indiana, have invented a certain new and useful Improvement in Dies for Making Radiator Units, of which the following is a specification.

My invention relates to dies of the class referred to and has for its purpose the pro vision of such a structure whichwill expeditiously, economically, and reliably make radiator units by the process described and claimed in my United States Patent Number 1,26%,155 of April 30th, 1918, of which the present application is a division.

In the drawings accompanying this and forming part thereof, Figure 1 is a projection of one half of the female die; Fig. 2 is a plan view of the same showing in addition the male die at the end of its inward stroke and two pipes, on which it has just operated, in section; Fig. 3 is a similar view with a third pipe connected to the second; Figs. 4 and 5 are perspective views of the work done by the die; Figs. 6 to 9 illustrate successive steps in completing a radiator unit; Figs. 10 and 11 illustrate variations; Fig. 12 shows a completed unit; Figs. 13 and 1% illustrate a modification of the die.

Referring to Fig. 1, I have here illustrated one of the two symmetrical halves of the female die. It has two semi-cylindrical grooves 1 and 2, separated by the wall 3.

Separated from groove 2 by wall 4 is the clearance space 5. Walls 3 and 4 are identical in shape. They do not extend entirely to the end of die 6, but terminate some distance short of it, merging gradually from their greatest height to the surface 7 which is continuous with the bottom of grooves 1 and 2 and the bottom of clearance space 5. The wall 14, forming the outer side of groove 1, extends the entire length of the die, as is clearly shown in the figure.

As stated supra, the other half of the female die'is symmetrical with the one just described, and when the two are placed to gether there will be formed two cylindrical bores and an opensided channel or clearance space, all in line, and connected with each other for a certain distance from one end.

The male die 8 comprises a body portion 9 and two legs 10, connected by the web 11.

Itconforms generally in shape to the portion of the female die with which it cooperates, but is smaller so that when inserted in the female die it is spaced everywhere from its walls by an amount approxiP mately equal to the thickness of the walls of the pipes to be operated on. 7

Figs. 4: and 5 illustrate what is to be accomplished by the die just described. Pipes l2 and 13 are first joined by one operation. To do this, the two pipes are first suitably heated, are then clamped between the two halves of the female die in a position which will be clear from Fig. 2, whereupon the male die is by suitable mechanism caused to perform its inward stroke. In doing so, it splits the two neighboring pipe walls, spreading the portions adjacent to each side and to the bottom of the slit outward. The conformation and relative positions of the male and female dies are such that the edges of the spread portions come together with just the requisite amount of pressure to form a good weld. The male die then performs its outward stroke. This entire op eration, it may be pointed out, is well known to those versed in this art.

After pi cs 12 and 13 have been joined as just descri d, pipe 15 is to be joined to them in the relative position indicated, whereafter pipe 16 is to be joined to pipe 15. Any desired number of pipes may evidently be added. In Fig. 2 the first two pipes, 12 and 13, are shown, in section, the operation of joining them having been completed. When die 8 has been withdrawn, the joined pipes 12 and 13 are moved to the position of Fig. 3, pipe 15 is placed into the position indicated in that figure, and joined as shown. It is understood of course that the parts to be operated on are first suitably heated in each case. The desired num ber of pipes having been joined as described, the resulting structure appears as shown in Figs. 6 and 6", where portions are broken away. Fig. 6 is a top view, showing the several pipes 12, 13, 15, etc, the lines along which they have been joined being indicated made in each end wall and the wall above it is slotted as at 19. The wings are then bent outward as shown in Figs. 8 and 8*. Next the upper portions of the walls are bent together and welded as at 21, in Figs. 9 and 9". Next the opening at each end is given the necessary shape and a suitable boss 22 is built or welded on to be tapped out or otherwise prepared for connection.

It will be understood that the entire process is repeated for the other ends of the pipes, so that the resultant unit appears as in Fig. 12.

Instead gated cross-sectional shape, they may be made round, as in and 11.

Figs. 18 and 14 illustrate another form of my invention There are here as many places in the female die 23 for pipes as it is desired to weld pipes into one structure. The male die 24 corresponds in shape, and is of course made with the required clearance. The female die is made in halves 25 and 26, and in the operation of the apparatus the pipes are all simultaneously heated, placed into the open female die, whereupon the female die is closed, the male die makes its operative stroke and return stroke, performing the operation for all the pipes by this one complete stroke.

What I claim is 1*- 1. A die for forming headers on sets of parallel pipes, comprising a female and a male member, the female member having spaces adapted to receive at least three pipes, said spaces being connected by a transverse space, the male me her having a body portion and at least two legs connected by a web for entering said female member, said of making the headers of an elonas in Fig. 9", Figs. 10

body portion, web and legs being shaped generally complementary to the cooperating portions of the female die but being, when inserted in it, spaced everywhere from its walls.

2. 'A die for forming headers on sets of pipes comprising a female and a male member; the female member having two cylindrical bores and a groove, all parallel and in the same plane and separated by walls of equal thickness, and connected by a space opening from one end of the female die; the male member comprising a body portion, two legs and a web joining the two legs all shaped generally complementary to the cooperating portions of the female member, but smaller, so that, when inserted in it, the male member is everywhere spaced from the walls of the female member.

3. A die for forming headers on sets of pipes comprising a-female and a male memher; the female member comprising two symmetrical halves whose cooperating faces are of such conformation that when the die is closed there are formed two cylindrical bores and a groove whose axes are parallel and lie in the plane separating the two halves and which are separated from each other by Walls of equal thickness, and connected by a space opening from one end of the female die; the male member comprising a bodv portion, two legs and a web joining the two legs all shaped generally complementary to the cooperating portions of the female member, but smaller, sothat, when inserted in it, the male member is everywhere spaced from the walls of the female member.

CHARLES H. TRUE.

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