US 707176 A
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Description (OCR text may contain errors)
Patented Aug. I9, 1902.
- (Application filed Oct. 6, 1901.)
(No lllodeL) INVENTEIFF.
ATTEET v m: NORRIS PETERS c0. now-ui'na. WASHINGTON, 0.6.
. upright support.
UNITED STATES PATENT OFFICE.
MARTIN STEINER, OF ERIE, PENNSYLVANIA.
SPECIFICATION forming part of Letters Patent No. 707,176, dated August 19, 1 902.
Application filed October 5, 1901. Serial nmmsi. (no modeli.)
To all whom it may concern Be it known that I, MARTIN STEINER, a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylvania, have invented certain. new and useful Improvements in Bearings; and I do declare that the following is a full,- clear, and exact description of the invention,which will enable others skilled in the art to which it ap pertains to make and use the same.
. My invention relates to improvements in trolley and other bearings and the invention consists in a combined Wood and metal'bearing, all substantially as shown and described, and more particularly pointed out in the claims.
In the accompanying drawings the invention is shown in connection with a trolley- Wheel and its support, wherein this improvement is especially well adapted for use.
Figure 1 is a central sectional elevation of the trolley-wheel and its support provided with myimproved bearing. Fig. 2 is a crosssection on line X ,X, Fig. 1, looking inward. Fig. 3 is a perspective view of-the bearingsleeve alone, and Fig. 4 is a perspective vie of one of the side contact-rings.
Referring now again to the drawings, A represents a trolley-wheel, and B a bifurcated or double-armed end of the trolley-pole or A shaft 0 is fastened or fixed at its ends in the ends of the arms of support B, and trolley-wheel A is equipped with a metallic sleeve D, mounted on this shaft. The said WheelA preferably is made of brass or bronze, which material is a good electrical conductor. Rings E are mounted on the ends of sleeve D at each side of the hub of wheel A, which is shown as that much shorter than sleeve D, and pins (1, rigid with rings E, are freely socketed to move laterally in pockets bin the arms of support B. Small spiral springs Fbear against the outer ends I support B.
of pins (1 and are adjustably held in engagement therewith by screws G in the threaded outer portions of said pockets. A perfect working engagement is always maintained between rings E and thehublof wheel A, springs F taking up the wear without breaking electrical contact between pins 01 and Beferrin g now more particularly to bearingsleeve D,,it will be seen that said sleeve is filled'with perforations or holes distributed thicklyover its entire surface, and these holes are perferabl'y' arrangedspirally lengthwise of the shaft and .areeach plugged with wooden plugs H, which occupy the space of the metal removed. In fact, the larger portion of the bearing-surface of sleeve D becomes wood by this construction, and practically onlyenough metalv is left between the perforations therein to hold the sleeve together and to provide a support for the wood plugs and'conductivity to the current. The said plugs are flush at both ends with the surfaces of the sleeve D, sothat they are backed outside by the wall of the hub of the wheel into which the sleeve is inserted and come inside flush against shaft 0, and the sleeve is reamed out after plugging to give it this smooth interior where it bears and rotates upon fixed shaft 0. In thus reducing the amount of metal which comes into bearingcontact with the shaft 0 and introducing a wood surface in additionl find that friction is correspondingly reduced or eliminated and the heating of the bearing thereby reduced in like proportion. In a practical test it has been shown. that the wood portion of the bearing-surface becomes highly glazed, and there appears to be neither wear nor heating after thisglaze upon the surface is formed At least the wear is very slow and there is no heating as such or that hurts. The ends of sleeve D also are provided with openings plugged with a W006. or other like plug H. These ends bear against the inside face of the arms of support B and reduce the friction at this point in like manner as the side plugs. The rings E are also provided with openings in which a wood filler is placed to reduce the friction at the point where said rings engage the hub of wheel A.
The object in forming the plugs in spiral rows is to have a continuous Woodbearing of holes from end to end extending through I the same from side to side, and wooden plugs filling said holes and having their ends flush faces thereof, and Wooden bearing-plugs set with the inside bearing-surface of the said into the ends of said tube and flush with the tube, whereby both metallic and Wooden bearend surfaces thereof, in combination with ing and contact surfaces are obtained for said means for engaging the plugs in the ends of 15 5 wheels, substantially as described. the tube, substantially as described.
2. In wheels, a metallic wheel having a cy- VVitness my hand to the foregoing specifilindrical bore through its axis, a bearing-tube cation this 20th day of September, 1901. fixed in said bore and a metallic contact there- MARTIN STEINER. with from end to end,said tube having wooden Witnesses:
'o plugs filling the same from end to end and ALFRED HENDERSON,
flush with both the inner and the outer sur- IDA M. MILLAR.