US124255A - Improvement in spindle-steps - Google Patents

Description

W. ,C.,CROSS.

Improvement in Spindle Steps.

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Patented March 5,1872.

Unteren @Iraans IVILLIAM O. CROSS, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO HIMSELF AND EPHRAIM C. CROSS, OF SAME PLAGE.

IMPROVEMENT IN SPINDLE-STEPS.

Spccilication forming part of Letters Patent No.124,255, dated March 5, 1872.

To all whom it may concern:

I, WILLIAM C. Cnoss, of Boston, in the county ot' Sutl'oll; and State of Massachusetts, have invented acertain new and useful Step 7 or Vertical Journal-BOX, of which the following is a specication:

The Nature of the Intention.

The nature of my invention may be best understood by reference to the accompanying drawing and the following specification.

Description of thc Accompanying Drawing.

Figure lis a vertical section of my improved step. Fig. 2 is a vertical sectiouof the same taken on a pla-ne at right angles to the plane of the section ot' Fig. 1. Fig. 3 is a plan.

General Description'.

My invention is for that class of supports or bearings for revolving vertical shafts called steps.

In the drawing, B represents the step, the hollow chamber L of which receives the lower end of the shaft. he outer chamber E, formed by the outside of the step and the interior of the housing` A, constitutes an oil-cup. D D, Fig. l, are holes for iilling the cup E E with oil. The upper end ot the chamber L is provided with a fillet or circular recess, M, into which dust and surplus oil may gather from the revolvingshaft. Two channels, N N Figr 2, lead from the fillet M to the oil-chamber E, through which the overliowin g oil may descend.

K is a small duct leading from the bottom of the chamber L through the step, as shown. H H, Fig. 2, are small ducts leading from the oil-chamber E to the duct K, and thence to the chamber L. I is a set-screw, made sutciently strong to support, in connection with the screw-thread at the top of B, the weight of the step B and the shaft within it. By this arrangement it will be seen that, as the step or shaft becomes worn, the step may be moved upward vertically, so as to make up for the loss by wear. To adjust the step, I have only to unscrew it so that it shall rise to the desired height, and then to move up the set-screw P until it comes to a bearing.

The operation of the oiling device is so obvious as scarcely to need explanation. The chamber E being full, the oil will have a tendency to iiow upward around the shaft in L, and thus keep it always lubricated, the surplus oil flowing back through the ducts N N. The ducts K H H may be cleared out by removing the screw P and inserting a wire.

, I claim as my invention- The combination of the step B with the hous ing A, when constructed and applied together, as specified, so as to form an annular chamber, E, communicating, by ducts N N and H H, with the journal, and also provided with the screw-plug P, the whole arranged to opera-te substantially as described.

IVitnesses: WILLIAM C. CROSS. y

WILLIAM EDsoN, FRANK G. PARKER..

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