US407671A

US407671A - Edwin a

Info

Publication number: US407671A
Authority: US
Publication date: 1889-07-23
Anticipated expiration: 1906-07-23

Description

(No Model.) A

E. A. LBLAND. GOUPLING FR STEAM PIPES FOR RAILWAY CAR HEATING APPARATUS..

No. 407,671. Patented July 23, 1889.

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ling-piece is supported.

The invention consists inthe several novel` UNITED STAT-Es PATENT OFFICE.

EDWIN A. LELAND, OF BROOKLYN, NEW YORK, AssIGNoR rro LEONARD RICHARDSON, OF SAME PLACE.

COUPLING FOR ST-EANl-PIPES FOR llAlLWAY-.CAR-HEATING APPARAIUS.

SPECIFICATION forming part of LettersjPatent No. 407,671, dated July 23, 1889.

Application filed April 16, 1889. Serial ITO. 307,430. (No model.)

AYork, have invented new and useful Improvements in Couplings for Steam-Pipes for Railway- Oar-Heating Apparatus, of which theV following is a specication.

My invention relates to steam-heating apparatus for railway-cars; and the particular purpose thereof is to provide an all-metal coupling or connection whereby the trainpipes may be connected between the several cars, said coupling having the capacity of permitting universal movement of the connected sections in every possible direction without leakage and without material wear of the metallic packings. It is my purpose, also, to provide a comparatively simple and durable construction whereby the Wear Of the packing shall be compensated and the .joints between the coupling-sections rendered tight and durable, the Wear of the packing being taken up by automatic means. I also propose to combine with the coupling-section attached to each train-pipe a spring-buckle by which the coupfeatures of construction and new combination of parts hereinafter fully set forth, and

then definitely pointed out in the claims folling-section enlarged, together with a portion of the train-pipe and the intermediate expansion-chamber. Fig. 3 is a transverse section of Fig. 2 on the line a: Fig. 4 is a detail section of one part of the packing-joint connecting the coupling-section with the expansion-chamber. Fig. 5 is a det-ail section showing the spring-buckle.

In the said drawings, the reference-n umeral 1 shows the body of the car, beneath which the train-pipe 2 is arranged in the usual manner. This train-pipe at each end makes communicationrwith an expansion-chamber 3, arranged beneath the end of the car and supported in any suitable manner.

The expansion-chamber 3 consists of a cylindrical shell 3, into one end of which is threaded a cap 4, through which the trainpipe 2 enters. The shell 3 is supported under the car by means of a loop or bracket 5 or by any other suitable means.

Threaded into the end of the expansionshell 3, next to the platform of the car, is a short cylindrical section 6, having` a collar 7, which abuts against the end of the shell 3. Outside this collar the metal is contracted to form afzonoidal section S of a sphere, an opening 9 being formed in said portion to admit a short sleeve 10, upon which is formed a spherical section 12, which accurately fits the zonoid cap S.

. Threaded into the inner end of the short cylindrical' section 6 is a packing-ring 13, having at equal intervals nipples 14 tapped `through said ring and containing plungers 15 and springslG actingthereon, said plungers bearing against an annulus 17, by which a. suitable packing 1S is compressed, said packing lying in a packing-chamber 18, which contracts in the direction of spring-tension `between the wall of the, short cylindrical sleeve 6 and the surface of the spheroid or spherical section 12, the wear of the packing `being instantly taken up by the tension of the spring-actuated plungers.

The spheroidal or spherical section 12 is formed upon one end of the short sleeve 10, which projects alittle in front of the opening 9, through which said sleeve projects, and Vwhereby its movement in all directions, not exceeding forty or forty-five degrees of movement upon the longitudinal radius, is permitted.

Entering and sliding within t-he short sleeve 10 is a coupling-pipe section 2O` the end of which projects somewhat within the expansion-chamber 3. This pipe-section passes through a packing-box 2l,l1aving a substantially conical or flaring form and screwed upon the outer end of the sleeve 10.

Into the end of this box is tapped a cap 22,-

ever material composed is tightly compressed Within the contracted end of the packingboX. A collar 26 is mounted on the couplingpipe section, and is connected by a chain 2oL or other suitable means to the bracket or loop 5, supporting the expansion-chamber 3, whereby the telescoping movement of the pipe-section is limited in both directions.

Inasmuch as the coupling-sections 10 are necessarily of better iinish and require a closer t within the universal bearing or spherical section 12, as well as within the packing-box 21, I may utilize the collar 26 as an attachment or connection between the coupling-section 2O and a separate pipe-section 20a, the ends of said sections being tapped into opposite ends of the collar and bearing against an interior ange 27. Upon the extremity of the pipe-section 2Oa I employ the construction and combination of parts shown .by an application tiled by me upon the 11th day of April, 1889, Serial No. 306,787, or any other coupling mechanism adapted to imite the parts.

In order to sustain the weight of the coupling-pipe section and at the same time permit its free universal movement within the spherical joint, I provide a spring-buckle (shown in Fig. 5) consisting' of an eye 27, forming part of a rod 28, which is passed through a screw-cap 29, turned upon a cylindrical casing 30. A spiral spring 31 of suitable force surrounds the rod 28 and supports a washer 32, adj ustably mounted on said rod. The cylindrical casing 30 is tapped into a screw-cap 33 at its upper end, said cap being suspended from the car. The eye or loop 27 surrounds the pipe, as shown in Fig. l.

By interposing the expansion-chamber 3 between the train-pipe and the spherical joint, and by so arranging the pipe-coupling relatively thereto that the telescoping eX- tremity of the coupling-section shall have a limited longitudinal play within said eXpansion-chamber, I am able to provide a coupling in which all the needed play of the rigid coupling-pipe sections, as Well as their longitudinal or telescopic adjust-ments, is amply provided for. Moreover, by forming the packing-chamber 18 in the manner set forth the wear is immediately taken up by the tension of the spring-plungers 15, which may be adjusted as regards tension by simply turning the nipples 14 in or out. A similar advantage is derived from the construction of the packing-box 21, surrounding the telescoping pipe-section shown in Fig. 2.

It will be seen that the telescoping pipesection may, but for the limiting-chain 26, be withdrawn from the coupling-section, having the spherical joint or globular connection with the end of the expansion-chamber 3. Thus the telescoping pipe-section may, in case of a rupture of the coupling between the adjacent cars, be withdrawn by a simple break of the limiting-chain 26 and avoid the total disorganization of the parts so common in couplings of this character.

lVhat I claim is- 1. In a coupling for the steam and other pipes of railway-cars, the combination, with the train-pipe havin'ga cylindrical shell forming an expansion-chamber and provided with a zonoidal section, of a spherical section fitting the latter and containing an internal' sleeve having at its outer end an attached conical packing-box, a packing-ring in said conical packing-box, a spring acting upon the packing-ring, and a coupling-pipe section telescoping in the said sleeve and conical packing-box, substantially as described.

2. In a pipe-couplingfor the steam-pipes of railway-cars, the combination, .with the trainpipe, of a cylindrical casing forming an eX- pansion-chamber, a short cylindrical section threaded into one end of said casing and having a zonoidal section, a cylindrical section having a spheroidal bearing fitting the zonoidal section, an annular packing located between the spheroid and the inner face of the short cylindrical section, and spring-actuated plungers acting on the annular packing, substantially as described.

3. In a coupling for the steam and other pipes of railway-cars, the combination, with the train-pipe having a cylindrical shell forming an expansion-chamber and provided with a Zonoidal section, of a spherical section fitting the latter and containing an internal sleeve having at its outer end an attached packing-box, a coupling-pipe section telescoping in the said sleeve and packing-box and provided at its outer end With a collar, and a chain secured to said collar for limiting the outward sliding movement of the telescoping pipe-section, substantially as described.

4. In a coupling for the steam-pipes of railway-cars, the combination, with the couplingpipe section having both angular and telescopic adjustment, of a spring-buckle supporting the same and consisting of an eye or loop surrounding the pipe, a rod on said eye passing through a screw-cap turned upon a cylindrical shell or casing which contains a spiral spring supporting said rod, and a screwcap turned upon the upper end of the shell and connected to the platform-bottom, substantially as described.

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

' EDVIN A. L'ELAND.

Vitnesses:

A. H. BRADLEY, JOHN S. HENRY.

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