US930247A - Bumper-beam draft-rigging. - Google Patents

Description

E. G. WASHBURN. BUMPER BEAM DRAFT RIGGING.

APPLIOATION FILED AUG. 12, 1907.

Patented Aug. 3, 1909A [16172265565 i #(W :wf

illustrate the invention, like characters in-n also preferably cast hollow in steel;

mann s'rnrns ser nir onnion;

EDWIN C. WASHBURN, OF MIN'NEAPOLIS,y MINNESOTA, ASSIGNOR, BY MESNE ASSIGNMENTS, vTO COMMONWEALTH STEEL COMPANY, OF ST. LOUIS, MISSOURI, ,f-CORPORATION OF NEW JERSEY.

BUMPER-:snaar DRAFT-ardente.

Patented Aug. 3, 1909.

.application ed August 12, 1907. Serial N @$88,164.

To all whom 'it may concern:

Be it known that I, EDWrN C. I/VASHBURN, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements' in Bumper- Beam Draft-Riggings; and I do hereby declare the following to be a full, clear, and ex act description ofthe invention, such as 'will enable others skilled in the art to which it appertains to make and use the saine.

My invention has for its object to improve that type of draft rigging wherein the coupler draft bar is connected to and has its base of reaction against a bumper beam.

To the above ends, the invention 'consists of the novel devices and combinations of devices hereinafter described and defined lin the claims.

In the accompanying drawings, which.

dicate like parts throughout the several views.4 I

Referring to these drawings; Figure 1 is a view partly in plan and partly in horizontal section showing my invention incorporated. in a bumper beam and draft bar. Fig. 2 is a View partly in front elevation and partly in vertical section, with some parts broken away, showing'the parts illustrated in Fig. 1; and Fig. 3 is a vertical section taken on the line x3 m3 of Fig. 1.

The bumper beam 1 is made hollow, being preferably cast in steel. At its central portion it is, provided with a bar receiving pocket 2, the top and bottom of which are formed by thickened portions la of the upper and lower plates of the beam, and the sides of which are formed by ribs that diverge slightly in a direction from the rear toward the right face of the beam. The upper and lower plates of the beam 1, on each side of the pocket 2, are formed with internal forwardly diverging reinforcing ribs 3, and between and on each side of these ribs 3 the lower plates are preferably'cut away, as shown at 4. By this arrangement, a maximum strength is given te the beam with a minimum amount of metal. The

said forwardly diverging reinforcing ribs 3 produce a trough-like reinforcement for the said upper and lower plates of the4 bumper beam. The draft bar 5, which is short, is This draft bar is extended into the pocket 2, and

cylindrical in a vertical plane, as shown at 6, and closely fits the correspondingly shaped seat 2a formed at the' back or` inner extremity of the pocket 2 and, as shown, constituting the bulge in the rear plate or Wall of the bumper beam. A vertically extended coupling pin or bolt 7 is extended through and pivote-ily connects the inner end ofthe draft'bar 5 to the bumper beam 1. The 'axis of this coupling pin 7 is located coincident with the axis of the engaging semi-cylindrical extremities of the pocket 2 and draft bar 5, and when slight play is permitted between said pin and the parts which it pivotally connects, the semi-cylindrical or rounded extremities of said draft bar and pocket willbe pressed directly into engagement under bumping strains.

At the u per and lower surfaces of its probuffer lugs or shoulders 9 formed on the forl wardly projecting face of the beam 1 above and below the said pocket 2. The engaging surfaces of these buffer lugs or shouldersS and 9 extend concentric to the axis of the pivot bolt 7, and hence, concentric to the axis of the rounded inner end of said draft bar.- In this waybufling strains are transmitted from the draft bar 5 to the bumper beam 1 at several different places, to-wit, both at the front and rear of the said beam.

The forwardly projectin end of the draft bar 5 terminates 1n vertica ly spaced ears 1() to which a coupling head, not shown, is adapted to be connected for slight pivotal motion by means of a couling in 11.

Draft strains on the raft ar are, of course, taken and transmitted to the bum )er beam through the coupling pin 7. The ateral oscillatory movements of the draft bar, permitted by the forwardly diverging side walls of the lpocket 2, permit the draft' bar to adapt itse f to curve i A device of the kind described is especially adapted for application to the front end of a locomotive, but may, ofcourse, be applied to the rear end of the engine or to the ends of cars or tenders.

TWhat I claim is 1. A hollow cast bumper beam having a tain of said reinforcing ribs being extended said pocket, substantially as described.

o receiving pocket extendingto the rem' Wall oedeem r l' sidee, the said beem also having diagonal reiii-forcing ribs extending from the forward ortions of the sides of said pocket to the rear wall of said beam. In testimony whereof l aflx my signature from the forward portions of the side Walls of l in presence of two Witnesses.

EDWIN WASHBURN.

draft bar receiving pocket at its central po tion, and Ithe upper and lower plates ofseid Vbeam having internal diverging reinforcing 4,ribs on the opposite sides of said pocket, ce1'- 2. A hollow cust bumaerbeam having im l integrally formed centra ly `llocated draft bar l Vlfitnesses:

l MAME Hom,

' tllereoL und having forwardly diverging i H. D. KILGQRE.

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