US64958A - Stephen w - Google Patents

Description

S. W. EATON. SUPPORT 0R BEARING FOR FRICTION ROLLERS.

No. 64,958 Patented May 21, 1867.

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STEPHEN W. EATON, 0F FAR MINGTON MAINE. Lam-8 Patent No. 64,958, dated My 21, 1867.

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TO ALL PERSONS TQ WHOM THESE PRESENTS SHALL COME;

Be it known-that I, STEPHEN W. EATON, of Farmington, in the county of Franklin, and State of Maine, have invented a new and useful Improvement in the Supports or Bearings of Friction-Rollers used for supporting the body of a railway carriage on the truck-frames thereof; and I do hereby declare the said invention to be fully described in the following specification, and'rcpresented in the accompanying drawings, of which- Figure 1 is a top view, and

Figure 2 a side elevation of a roller and its supporting box.

The said box is to be fastened on the top part of the truck-frame, and with the roller resting on the upper surface of the base-plate ofsthe box. The carriage body is to rest on the upper part of the periphery of the roller. The usual mode of supporting the roller is byjeurnals projecting from-it and sustained in cylindrical bearings formed in the cheek-pieces of the box or housing of the roller, in which case the weight of the carriage body and the friction-rollers is borne by the journals and their bearings. Under this state of things each of the rollers can have no other motion relatively to its housing or box than a rotary motion on and about the axis of the roller. It is found in practice. that under this mode of supporting the roller it is very liable to become worn more or less flaton its periphery, whereby it will be prevented from revolving and performing its duty. The consequence of this is great danger of the car or carriage, while turning a curve, being throwrnofi or caused to leave the railwaytraclc. My improvement not only obviates or greatly reduces all such danger, but it saves the roller from being so worn. It also saves the wheels and rails from much wear that would be experienced with the common roller bearing. 'It also effects a saving in the tractile force, or enables it to operate with greater effect in movingthc carriage on a curve. y

In carrying out my invention the journals 6 c of the roller 13 are arranged inlong curved semicircular or other proper shaped recesses or notches a a, made in the check-pieces I) I) of the roller-supporter or box A, and the roller-bearings are not to reston the bottoms of their recesses, but are to be off the same, the roller at its periphery being supported on the upper surface of the base-plate e of the box, and so that the roller may roll thereupon a short distance lengthwise of such plate,'its movement either way being estopped by the jour-' nals of the roller bringing up against the shoulders of the elongated. recesses or notches a a. 7

Thus the roller, by my improvement, can have n compound 'motion, that is to say, one of rotation on its axis, and one either forward or backward on the base-plate c. This enables the truck-frame to readily adjust itself to the curves of the rails of the track, as the roller will always revolve, and is not liable to become flat-' tened on its periphery, as it is when cylindrical bearings for the journals are employedl What, therefore, I claim as my invention, is-

The box A constructed snbstantiall as s ecified viz with the elon atcd recesscsor notches an to receive the journals of the roller 13, and so made as to enable the roller to rest on the base-place c of the box, and roll thereon a short distance in either direction from the middle of the plate, as described.

STEPHEN W EATON. Witnesses:

G. L. Foss,- J. A. LINCOLN

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