US1039930A

US1039930A - Method of attaching a collar to the end of a pipe.

Info

Publication number: US1039930A
Application number: US61981911A
Authority: US
Inventors: Paul H Grimm
Original assignee: CHARLES G CORNELL JR
Current assignee: CHARLES G CORNELL JR
Priority date: 1911-04-08
Filing date: 1911-04-08
Publication date: 1912-10-01
Anticipated expiration: 1929-10-01

Description

P. H. GRIMM.

METHOD OP ATTACHING A COLLAR T0 THE END OF A PIPE.

APPLICATION FILED APRA?, 1911.

Patented Oct. 1, 1912.

2 SHEETS-SHEET 1.

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P. H. GRIMM.

METHOD 0F ATTACHING A COLLAR T0 THE END 0F A PIPE.v

APPLICATION FILED Amm, 1911.

1,039,930, Patented Oct. 1, 1912.

2 SHEETS-SHEET 2.

16 Qmd'ncmm f1/V14 m,

"has

shaded section 15, of Fig. 4.. After the The advantages' of this method of formi'- inga flange or collar on the end of the pipe, are that when two such lianged pipe ends are placed together in practice, thebore of the pipe is uniform and no water pockets are formed at the joints, as in the case of many prior made y my invention makes a perfectly homogeneous union between the end of the pipe, t-he inside diameter. of the collar and the new metal or Swedish iron which has been added, and in no sense lare the metals united by the molten Swedish iron acting similar to a solder, but rather by molecular union of the three metals composing the Swedish iron pipe and collar by inter-fusion. Q This perfect union of the metals is made possible by my method, for the reason that the welding surfaces are constantly in sight and; it can be seen whether they are perfectly, clean and free from substances which wouldv interfere with the securing of a strong weld, i -thereby avoiding all use` of a linx, and at the same time seeing that the metals and parts It has also been found that by my method a flange can be secured to a pipe six inches in length,

have actually been fused together.

while in the prior couplings and'methods of which I am aware, eighteen inches of pipeare required. Furthermore, by the method herein described the welded or connecting surfaces are square, thereby effecting a maXi-' mum resistance to the pipe and flange beingV separated. It has also been found that by.

the 'useof afheating torch-10, which previously brings the end of the pipeto a redV heat, before the 'Oxy-acetylene blow pipe is applied, the cost of fastening a flange to a pipe section vis reduced to a minimum for the reason that the oxygen and acetylene used in an Oxy-acetylene burner are expened to tightly draw up the abutting flanges 4,

secured to the ends of the pipe sections by my process.

In attaching collars to the ends of pipes, it must be considered that both ends of the pipe to be treated will have a collar attached. These collars after they are welded on, must be practically parallel with each other before j they are faced. After facing, they must be exactly parallel. It follows, therefore, that pipe couplings. The finished weld 1 i I i Il the ends 'of the pipe itself must be made parallel before the collar isvplaced on the pipe. In practice I find that iron or steel pipes as they come from the mill are never axially straight and hence their ends are not parallel with each other. To weld collars on pipes in this condition would result in the co lars beingso much out of parallelism that when the collars are finally faced off, they would not be of the same thickness onv their periphery. Hence, I prepare the pipe to receive the collars by placing it in a lathe.

which vhas two revolving cutter heads, and face olf both ends at the same time. The pipe itself during the facing operation remains stationary. When the recesses 5 of the collars are now slipped over the ends of the pipe andagainst the slight shoulders, the take a position which make the collars at the ends of the pipe, practically parallel,

regardless of the curvature of the pipe,

should there be any. After the collars are welded on in this position, the pipe with its collars is again placed in the lathe and faced oft', both ends at the same time. This results not only in exactparallelism, but also in exact length, both of which are of the greatest importance in high grade work for heavy vsteam pressures.

What I claim is 1. The method of making a lianged pipe by uniting a collar to the end of a pipe, which comprises supporting the collar on the edge of the end of the pipe by means of a small lip on said collar so that the inner periphery of said collar rests on and projects from the end of the pipe, melting and fusing the metal at the contiguous end of the pipe and inner periphery ofthe collar and adding metal in a fused state during the said melting and fusing of the end of the pipe and inner periphery of the collar.

2. The method of making a pipe having a flanged end, which comprises supporting a collar on the edge of the end of the pipe by means of a small lip on said collar so that the inner periphery of said collar rests on and projects from the end of the pipe, melting and fusing the metal at the contiguous end of the pipe and inner periphery of the collar and adding metal in a fused state during the said melting and fusing of the end of the pipe and inner periphery of the collar sufficient to fill up the an lar pocket between the end of the pipe and inner periphery of the collar.

3. AThe method of making a pipe having a flanged end, which comprises supporting a collar on the edge of 'the end of the pipe by means of a small lip. on said collar so that the inner periphery of said collar rests on and projects from the end of the pipe, heating the end of the pipe and collar to a red heat bv a torch, melting and fusing the metal at the contiguous end of the pipe and inner periphery of the collar byv means'of Oxy-acetylene blow pipe and adding metal in a fused state during the said melting and fusing of the end of the pipe and inner periphery of the collar suiieient to till up the angular pocket between the end of the pipe and inner periphery of the collar.

4; The method ofmaking a ianged pipe by uniting a collar to the end of a pipe, which comprises supporting the collar in a substantially vertical position onthe edge 'of the end of the pipe supported in a horizontal position so that the inner periphery of said collar rests on and projects from the end of the pipe, slowly rotating said pipe and collar, melting and fusing the metal at the lowest section of the contiguous end of the pipe and inner periphery of the collar during the rotation of said pipe and collar, and adding metal in a fused state during the said melting, fusing and rotation of the end of the pipe and inner periphery of the Collar.

5. The method of making a flanged pipe by uniting a collar to the end of a pipe, which comprises supporting the collar in a substantially vertical position on the edge of the end of the pipe supported in a horizontal position so that the inner periphery of `said collar rests on and projects from the end of the pipe, slowly rotating said pipe and collar, melting and fusing the metal at the lowest section of the contiguous end of the pipe and inner periphery of the collar during the rotation of said pipe and collar and adding metal in a fused state during the said melting, fusing and rotation of the end of the pipe and inner periphery of the co1- lar sufficient to lill up the angular pocket between the end of the pipe and inner periphery of tbe collar.

In testimony whereof I aHiX my signature in presence of two witnesses.

PAUL H. GRIMM.

Witnesses:

JAMES J. PHELAN, MORRIS SALTPE'I'ER.