Improvements in Journal Bearings.
Year: 1890

page_text: Date of Application, 5th June, 1890-Accepted, 2nd Aug., 1890
COMPLETE SPECIFICATION.
Improvements in Journal Bearings.
I, HERBERT JOHN HADDAN, of the firm of Herbert & Co., Patent Agents, of
18, Buckingham Street, Strand, W.C., London, in the County of Middlesex, Civil
Engineer, do hereby declare the nature of this invention, a communication to me
from abroad by Marion Adelbert Andrews and James Milford Andrews both of
Syracuse, United States of America, Gentlemen, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:
The invention relates to the construction of journal bearings, and especially to that
class known as anti-friction bearings, and which are designed to reduce the friction of
the axle or shaft (hereinafter referred to and intended to be included in the term "axle")
rotating therein, and especially when carrying a load.
The object is to produce an anti-friction journal-bearing, which requires no oiling,
in which a ring bears frictionally upon the top of the axle, grooved rollers fit inwardly
upon an endless track-way upon the periphery of the ring, and outwardly upon an
endless track-way upon the inner wall of the casing frame, and in general to produce
a bearing in which the axle is grooved to fit an endless track-way within the ring and
the frictional rollers or wheels travel upon endless track-ways, the rollers being
mounted upon separate axles, so that they do not rub against each other.
The invention consists in the several novel features of construction and operation
hereinafter described and specifically set forth in the claims annexed hereto.
It is constructed as follows reference being had to the accompanying drawings
in which Fig. 1 is a front elevation with the cap or cover removed.
Fig. 2 is a vertical transverse section.
Fig. 3 is a section taken on radial lines from the center outward both ways through
the centers of the two friction rollers.
A is the casing constructed in sections, which together comprise an inner circular
bearing face.
1 and 2 is an endless track-way secured upon or integral with the inner wall of the
bearing.
B is the axle or shaft ring having an endless internal track-way. 3, and an endless
track-way 4 around its periphery.
Between and adapted to travel upon the track-ways 2 and 4, I place the grooved
friction rollers or wheels 5 between the ring B and the journal-box A.
The axle 6 is smaller than the bore of the ring and fits loosely therein as shown,
the axle being also grooved as at 7 which groove fits over the track-way 3 in the
ring B.
The rollers 5 are separately mounted in arbors 8 which are in turn mounted in
annular rings 9 or 10. Graphite or other anti-friction washers are interposed around
the arbors and between the inner face of the rings and the outer face of the rollers,
and these arbors hold the rollers away from each other so that one cannot touch or
rub or travel upon the adjoining roller, but all are free to travel together upon their
track-ways.
It will thus be seen that the shaft of the axle rotates against the inner track-way of
the central ring and thus carries said ring around; and that the friction rollers
actuated by the rotation of the ring also travel, upon inner and outer trackways;
also that the axle is considerably smaller than the bore of the ring, so that when
weight is applied, the axle supports the ring; also by reducing the size of the ring
the axle bears with greater frictional contact against the upper side of the ring.
It will also be observed, that the front and rear of the bearing can be provided
with an ordinary cap or cover to close the same and keep out the dust and grit.
It will be further seen that by the use of the endless trackway in the ring, all end
thrust of the axle is prevented.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. A sectional journal casing, an endless trackway within it, a central ring having
endless trackways upon its inner and outer faces, and groove rollers travelling upon
the trackway within the casing and upon the outer face of the ring, in combination
with an axle grooved to fit over the trackway within the ring and passing loosely
through the ring as set forth.
2. A friction ring having an endless trackway within it, an endless trackway
around its exterior, an axle grooved to fit upon the trackway within the ring, an
exterior casing, and an endless trackway within it, grooved rollers fitting over the
external trackway upon the ring and the internal trackway of the said casing, and
annular rings carrying separate arbors for the grooved rollers, in combination, as.
set forth.
3. A journal bearing comprising an external casing having an internal trackway,
grooved rollers mounted upon separate arbors, rings supporting said arbors, anti-
friction washers upon said arbors, the grooved shaft and the central ring having
internal and external trackways, and a bore of larger diameter than the axle, as set
forth.
HERBERT & Co.,
18, Buckinghain Street, Strand, W.C., London, Agents to Applicant.