US9926A

US9926A - Improvement in friction-rollers

Info

Publication number: US9926A
Authority: US
Publication date: 1853-08-09
Anticipated expiration: 1870-08-09

Description

No. 9,926. PATENTED AUG. 9, 1853,

' J. PATTERSON.-

FRICTION ROLLER.

TAES

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J AMES PATTERSON, OF FRANKLINVILLE, Nllli' YORK.

Specification forming part of Letters Patent No. iigtllfifiir, dated August 9, 1853.

To all whom it may concern: v

Be it known that 1, JAMES PATTERSON, of Franlclinville, in the county of Oattaraugus and State of New York, have invented a new and useful Improvement in the Bearings of Car Axles and Wheels; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, making part of this specification.

Figure 1 is a central section of a car wheel and axle, and Fig. 2 a section of the same in the line a: :r of Fig. 1.

Like letters designate correspondingparts in both figures.

The nature of my invention consists in arranging within a central aperture of the car- Wheel and around its axle a series of antifriction rollers, each of which has bearing portions of different diameters, the larger 0 O of which roll upon the inner periphery a of the car-wheel and the smaller 0 upon an en larged portion 7) of the axle. Their proportions may be such that the inner circumference u. of the wheel shall bear the same ratio to that of the larger portions of each roller as the circumference of the enlarged port-ion b of the axle bears to that of .the smaller portion of each of the rollers.

The car-wheel A is constructed with a cylindrical aperture in its center of sufficient diameter" to receive both the axle and theanti-friction rollers, and may have a permanent shoulder 7L at the outer end of said aperture to prevent the rollers from moving cndwise, but should have a removable shoulder or plate f at the inner end of the aperture,

whereby to insert said rollers and then to se-- A plate (I cure them within the aperture. fits over and closes the outer end of the aperture for the purpose of excluding dust therefrom and for the axle 13 to bearagainst slightly to prevent any rubbing friction of the ends of the rollers againstthe shoulder h by the inward pressure of the rails against the wheel or its flange. Said plates 11 f are secured to the wheel by bolts yg', &c., passing through all and fastened by nuts.

The axle it does not revolve, but is perinanently attached to the car-truck. Within the aperture of the car-wheel, midway and about one-half the distance between the two shoulders (Zf, (at b, Fig. 1,) it is enlarged to such a diameter that the required size and proportion may be given to the rollers between it and the periphery (I of the whcels aperture.

The anti-friction rollers are made of the same length as the cylindrical aperture of the carwheel, between the shoulders (I and f, and as many in number as can'bc inserted without coming in contact with one another.-

The portion a of each roller, which comes in eontact'with the peripheryb of theaxle is of less diameter than the portions 00- at each end thereof, which come in contact with the inner periphery (t of the car-wheel. The large port-ions of the rollers should not come in contact with the small portions of the axle.

In order to keep the rollers at the proper relative distance apart, I form upon the ends of each roller small journals i i, which fit loosely into equidistant bearings in plates n Fig. 1, which revolve freely with said rollers. These plates may be kept in their positions upon said journals of the rollers by screws Z Z,

which enter theends of two or three of the journals, their heads preventing the plates from slipping oit' endwise. The friction on these journals is extremely slight, because they perform an office in practice which in theory would not be necessary.

13y enlarging the diameter of that portion of the rollers which runs in contact with the wheel the liability of the lat-tor to become indented by the rollers is greatly diminished, and thus one of the great dillicultics in the way of using friction-rollers is avoided. Moreover the rolling of thewhoel upon the axle is rendered much more certain, and the tendency to slip greatly diminished by the comparative smallness of that part of the roll Which bears upon the axle, and whose turw What I claim as my invention and desire latter being enlarged at the point of contact to secure by Letters Patent, iswith the rollers, as herein specified.

Fitting the bearing of a, rolling camwheel I on a fixed axle, with .a series of frietion-rollv JAMES PATTERSON. ers having bearings of large diameter to run Witnesses: I in contact with the wheel and of smaller di- Z. O. ROBBINS, amet-er t-o r1111 in contact with the axle, the GEORGE A. C; SMITH.