US548998A

US548998A - Tubular-rail joint

Info

Publication number: US548998A
Authority: US
Publication date: 1895-10-29
Anticipated expiration: 1912-10-29

Description

(No Mod-e1.)

R. MANNESMANN. TUBULAR RAIL. JoINT.

No. 548,998. Patented 088i 29, 1895.4

NITED STATES PATENT OFFICE.

REINHARD MANNESMANN, CE REMSCHEID, GERMANY, AssIeNoR To THE MANNEsMANN TUBE COMPANY, on JERSEY CITY, NEw JERSEY.

TUBULAR-RAIL JOINT.

SPECIFICATION forming part of Letters Patent No. 548,998, dated October 29, 1895.

Application tiled March 6, 1895. Serial No. 540,767- (No model.)

To all whom t may concern:

Be it known that I, REINHARD MANNES- MANN, a citizen of Germany, residing at New York, in the county of New York and State of NewYork, have invented new and useful Improvements in Tubular- Rail Joints, of which the following is a specification.

. In the construction or manufacture of various articles from tubes, such as frames of any kind, railings for cars, carriages, or vehicles, buildings, and ,many other purposes, the tubular parts are ordinarily connected by brazing, soldering, or casting metal about the joints, or by screw-threaded union-couplings into which the tubes are screwed.

lIn all prior methods the joints are difficult and troublesome to construct, and materially increase the expense of the railing or other article or frame, and in addition to this the jointsare liable to break or become disconnected, especially if subjected to excessive vibrations.

The objects of my invention are to avoid the objections stated; to provide novel, simple, efficient, and economical means for uniting tubes Where one tube passes through another; to provide such a construction of the parts that they cannot become disconnected or separated under` ordinary circumstances or if subjected to excessive jars or. vibrations, and to entirely avoid brazing, soldering, and screw-threading the parts together.

To accomplish all these objects, the invention consists, essentially, in atubular structure composed of a tube formed with a transverse orifice and another tube extending through said orifice and having a part of its shell struck into engagement with the interior of the other tube to prevent movement of the two tubes relatively to each other.

The invention also consists in a tubular structure composed of a tube having a transverse orifice through its shell and another tube extending through the transverse orifice and fianged into engagement with the edge of the said orifice.

The invention also consists in certain other features of construction hereinafter described two tubes connected or united according to my invention. Fig. 2 is a sectional view of the same. Fig. 3 is a side elevation showing a modification of the invention, and Fig. 4 is a sectional view of the modified construction.

In order to enable those skilled in the art to make and use my invention, I will now describe the same in detail, referring to the drawings, wherein- `The numerals l and 2 indicate two tubes, arranged, as here shown, at right angles to each other.

The tubes are preferably made according to the well'known Mannesmann method or process of producing seamless elastic tubes of steel or other metal; butA my present invention is useful in connection with tubes of any kind, and therefore I do not wish to confine myself to any particular method or process of manufacturing the tubes.

The shell of the tube 1 is constructed with a transverse orifice 3, having a form substantially the same as the tube 2 in cross-section. The tube 2 is then inserted through the transverse orifice, and its shell at a point inside of 4the tube l is perforated by suitable tools in such manner as to produce or strike up a fiange 4, which projects laterally and engages behind the edge of the transverse orifice.

I prefer to construct the tube 2 at a point inside the tube l, so that oppositely-projecting flanges 4 and 5 are produced. This can be accomplished in any suitable manner-as, for instance, by making a comparatively small perforation in one side of the shell of the tube 2 by the employment of a pointed instrument and gradually Working the instrument therethrough, so that the metal is flanged outwardly-as, for instance, as at 5. The other flange 4 can be formed, after the fiange 5 has been constructed, by forcing a larger tool through the shell of the tube opposite the flange 5, so as to force the metal outward and produce the flange 4.

The interlocking engagement of the tubes by a flanged construction of one of the tubes provides a joint which effectually prevents disconnection or separation of the tubes and entirely avoids connecting tubular parts by brazing, soldering, or casting metal about the joints, or employing screw-threaded union- IOO couplings into which the tubes are screwed.

In the modification, Figs. 3 and 4, the tubes G and 7 are flattened out at the joint and the transverse orifice 8, pierced through the shell of the tube 7, is of an oblong form to correspond to the oblong form imparted to the tube 6, where the latter lies in the transverse orice. The tube 7 is preferably provided in the first instance with a circular orilice and the tube 6 inserted through said orifice to the extent desired, after which the parts are compressed to flatten them together, and a part of the shell of the tube 6 is expanded laterally in an outward direction or is struck up With a part which engages the interiorol:` the tube 7, whereby the two tubes are firmly and permanently united, and movements of the same relatively io each other are prevented.

The tubes connected together in the manner described and shown can be used for many purposes not necessary to specifically mention. The invention, however, is particularly designed for railings intended for cars, carriages, and other vehicles, and for frames of any kind composed of tubular parts.

Having thus described lmy invention, what I claim is- 1. In a tubular structure, the combination of a tube formed with a transverse orifice, With a tube extending through said orice and having a part of its shell struck into engagement with the interior ot the other tube to prevent movement of both tubes relatively to each other, substantially as described.

2. In a tubular structure, the combination of a tube having a transverse orifice through its shell, With a tube extending through said orifice and flanged into engagement with an edge thereof, substantially as described.

3. In a tubular rail joint, the combination of a metal tube having a transverse oritice through its shell, with a tube extending through said orifice and having its shell perforated and struck up with a flange which en gages the inside of the edge ot the transverse orice, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

REINHARD MANNESMANN.

Witnesses:

EMIL KIPPER, ALBERT H. NoRRIs.