Improvements in Roller Bearings.
Year: 1898

page_text: Date of Application, 12th Feb., 1898-Accepted, 11th Feb., 1899
COMPLETE SPECIFICATION..
Improvements in Roller Bearings.
I, FRANK MOSSBERG, of 101, Sabin Street, Providence, Rhode Island, United
States of America, Manufacturer, do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
11
My invention relates to roller bearings and while particularly adapted for
use in connection with shaft hangers its use is not restricted in this direction
and the invention may be applied to many other specific uses with equally good
results.
My invention includes a cage or frame made in one piece or in sections as
desired, adapted to receive a series of rollers, these rollers preferably being
arranged in sets and the rollers of each set together, each set being preferably
separated from the adjacent set by a stationary piece or web extending between
the parts of the cage. The rollers are loosely supported within the cage, the
rollers of each set having contact with each other, but the cor ection with the
cage is such as to prevent the rollers from dropping out or from being displaced
in the manipulation of the cage containing the same and this is accomplished
by grooving the inner walls of the end rings of the cage and making the ends
of the rollers conform thereto.
In the principal form of my invention, Figs. 1 and 2, (Figure 1 being a side
elevation and Figure 2 a cross section with some of the rollers removed), I form
a cage in halves A, B, adapted to be joined together by dowels a and recesses b.
Each half of the cage comprises two semi-circular end rings 3 connected by
longitudinal pieces c, and an intermediate division piece or brace d, may extend
across between the end rings centrally thereof, as shown, thus dividing the
complete cage into quarter sections. In the spaces thus provided I insert a
series of elongated rollers e, the ends of the rollers being rounded as at f, while
the inner faces of the end rings are grooved or hollowed as at g (Figs. 2 and 3)
to correspond to the configuration of the roller ends. This construction not only
prevents the rollers from becoming displaced or dropping out but also reduces the
friction at the bearing ends. I do not limit myself to the rounded ends of the
rollers and the correspondingly grooved end rings, as the ends of the rollers and
the grooves may assume any other form which will have the effect of retaining
the rollers in place against displacement. Thus I may make the ends of the
rollers conical or frustro-conical and it is obvious that they may assume other
forms. Neither do I limit myself to the particular construction of the cage, as
this may be made of built up pieces or may be made of one piece and I may
use more than one division piece if this be found necessary to strengthen the
construction. It will be noticed that the rollers in their diameter exceed the
diameter or width of the metal of the cage, thus extending beyond the cage upon
each side thereof and providing a rolling surface not only to the parts sustained
by the rolls but also to the bearing surface supporting the rollers. In Figure 3
I show the cage at A, the shaft at C, and the hanger support at D.
In the application of the invention to a shaft hanger I may use two such cages
arranged end to end and I prefer this so as to permit the use of short rolls, but
it will be understood that it is possible to use a single cage with rolls extending
from end to end.

page_text: I have described the rollers as being self contained within the cage so as to
be readily removable with the cage and I prefer this construction but I do not
limit myself in this connection as for some purposes the divided cage may be
used with division pieces and have the rollers not self contained but arranged
in sets within the spaces formed by the division pieces with a plain end bearing
against the inner face of the end ring. In such a construction it is necessary
to put the cage in place and then add the rollers.
In Figures 4 and 5 I have shown a modified construction. In these figures
in the cage the rolls are separated by webs and are dropped into the recesses
or pockets from the outside. The cutter by which the recesses or pockets are
milled is made in such a way that it leaves the outside edge of the recess smaller,
or just the diameter of the roll, so that when the roll is squeezed in, it will stay
but to make it perfectly secure the edges i may be hammered down. This is an
exceptionally cheap way of making the bearings. The rollers are self contained
in this form also.
In Figures 6 and 7 I show a modification of the roller bearing shown in Figure 4
by which I am enabled to get a more perfect bearing at the ends of the pocket
or recess for the ends of the roller. This bearing is spherical and fits accurately
about all sides of the spherical end of the roller, and affords a perfect bearing
therefore in all directions. In forming the cage in this way the length of the
outer opening of the pocket or recess is not so great as that of the roller and in
order to get the roller in it is made in three sections. In placing it in position
the end sections are dropped into the pockets and then slipped lengthwise so
that the spherical ends will fit into the spherical or cup shaped bearings at the
ends of the pocket and then the middle section is dropped into place and the
edges of the pocket hammered down to retain the sections.
Figure 7 shows an outside face view of part of the cage broken away at one
end and it will be seen that the spherical end of the roller extends at * beyond
the end of the pocket opening, into the spherical bearing socket.
Figure 6 is a section on line 6-6 of Figure .
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what.
I claim is:-
1. A roller bearing comprising a cage having end rings with a groove in the
inner face of each end ring, and a series of rollers loosely held within the cage-
and having their ends conforming to the configuration of the grooves in the end
rings whereby the displacement of the rollers is prevented, substantially as
described.
2. A roller bearing comprising a cage, rollers having rounded ends, said cage
having a series of grooves or pockets adapted to receive the rollers, the openings
to the grooves being of such size as to just allow the insertion of the roller or to
have their edges hammered down to prevent displacement.
3. The formation of the rollers in sections with the end sections having their
spherical ends engaging spherical bearing sockets at the ends of the pockets,
the walls of said spherical bearings fitting accurately about the ends of the
rollers, and the edges of the pockets in the cage, being forced over to retain the
roller sections as shown and described.
Dated this 12th February 1808
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.