US823405A - End support for locomotive turn-tables. - Google Patents

Description

No. 823,405. PATENTED JUNE 12, 1906.

H. FULLER.

END SUPPORT FOR LOUOMOTIVE TURN TABLES. APPLICATION FILED MAR. 5. 1906.

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APPLICATION FILED MARE, 1906.

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END SUPPORT FOR LOGOMOTIVE TURN TABLES.

- APPLIGATION FILED MAE. 5, 1906.

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UNITED STATES PATENT OFFICE.

HARRY FULLER, OF CLEVELAND, OHIO, ASSIGNOR TO THE KING BRIDGE COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

Specification'of Letters Patent.

Patented June 12, 1906.

Application filed March 5, 1906. Serial No. 304,184.

To a whom, it may concern:

Be it known that I, HARRY FULLER, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in End Supports for Locomotive Turn-Tables, of which the following is a full, clear, and exact description.

The object of the present invention is to provide an end support for a locomotive turn-table which shall be able to withstand the shocks received from the heavy modern locomotives.

The invention resides particularly in so dividing and mounting the end supports that the shock of the oncoming engines shall be distributed between the supporting units and in such manner as to cause a'minimurn distortion of the supporting-frames, and consequently decrease the liability of binding action between the supports and the circular trackway.

Referring to the accompanying drawings, Figure 1 is a side elevation of part of a locomotive turn-table. Fig. 2 is a plan view of same. Fig. 3 is an end elevation. Fig. 4 is a cross-section partly broken away near the center.

The table A is, as usual, supported centrally upon the usual steel plates A and rollers A permitting it to be swung horizontally and tilt slightly in a vertical plane and does not present any novelty which I desire to claim in this application, consisting of the usual framework provided with bracing-girders. At each end of the table, however, where there has heretofore been rigidly secured a truck-frame having journaled therein four supporting-wheels I provide a pair of supporting-frames B D, one mounted at each side of the table end and each j ournaled in such manner as to freely oscillate in a vertical plane without regard to the movement of the table. Since each of these supportingframes B D may oscillate in a vertical plane without regard to the movement of the table, it is plain that the oscillation of each is independent of that of the other. This is of primary consequence in attaining the results sought by this invention. As is well known, these end supports of turn-tables normally do not touch the circular track O of the pit until a locomotive is run thereon, the entire wei ht of the table, if properly constructed, belng borne by the central support. This produces a condition not ordinarily occurring in any other supporting structurenamely, one of normal instabilityand renders it subject to wearing shock on every occasion of its use. As locomotives pass thereon the end of the turn-table receives a sudden downward blow, the entire force of which is directed onto the end supports. Where these end supports have been rigid, as in the turn-tables heretofore constructed, any inequality in the level of the track at that point results in uneven wear on the wheel-bearings and frequently in distortion of the frame, which results in the binding action between the wheels and the circular track, as aforesaid. For exam ple, suppose the two outside wheels of the rigid truck to be the first to come in contact with the trackway. The result will be that the entire load will be borne by these two wheels, and the resulting strain will tend to distort the truck, so as to cause it to sag in the center. This happens more readily than one would think to be the case, owing to the enormous weight suddenly thrown upon the structures. As will be plainly evident, any distortion of the frame whatever produced in any manner is likely to throw the wheels out of alinement, so that upon their movement about the circular track they will bind thereagainst and make it difficult to operate the table. In the structure which I have devised it will be plain that should the two outer wheels B D be the first to come in contact with the track, owing to any inequalities in the latter, the support of each of these outer wheels will yield in an oscillatory manner until the inner wheels B D also reach the track, thus distributing the blow given by the locomotive between the four points of support to which the structure is designed to transmit such blows.

This structure is to be plainly distinguished from those cases in which divided trucks in traveling carriers are used for their equalizing effect, since the conditions which obtain in the apparatus under consideration are not found in the moving carriers. While it is true that these supports do operate as equalizing-trucks during the movement of the turn-table, it is not for this purpose that they are applied, and for this purpose alone they would be ordinarily a superfluous luxury. It is because the end supports of locomotive turn-tables of necessity receive such sudden- Having thus described my invention, 1.

claim 1. A locomotive turn-table having an end support comprising two independent truckframes, each pivotally mounted so asto-be capable of vertical oscillation.

2. A. locomotive turn-tablehavingan end support comprising a pair of independent trucks; eachpivotally mountedto thetableframe, and eachzhaving a supporting-wheel r 5 on each side of its supporting-p1vot In testimony whereof I hereunto affix my signature in the presence of tvvo Witnesses.

HARRY FULLER. Witnesses:

J. B WooDWARD, E. B. GILCHRIST.

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