Improvements in and relating to Roller Bearings.
Year: 1895

page_text: Date of Application, 3rd July, 1895-4ccepted, 24th Aug.,
1895
COMPLETE SPECIFICATION.
Improvements in and relating to Roller Bearings.
I, FRANK MOSSBERG, of Attleborough, Massachusetts, 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 :-
This invention relates to improvements in that class of antifriction bearings
known as "roller bearings" and in the method of making the same.
The object of this invention is to produce a bearing in which the journalled
portion of the shaft will be provided with antifriction-bearing surfaces extending
nearly the full length of said journalled portion.
The further object of this invention is to produce a roller-bearing in which the
torsional strain exerted on the antifriction-rolls and the cage containing these rolls
by the revolution of the shaft journalled therein will be reduced to a minimum.
The invention consists in the cage for holding the rolls in place and the method
of making it and the novel combination therewith of rolls adapted to provide long
bearings for the shaft as will be more fully hereinafter described.
Figure 1 represents a horizontal sectional view of the improved roller-bearing
and journal, a part of a shaft being shown in elevation as journalled therein.
Figure 2 is a section of the cage lengthwise through its centre on line æ, æ,
Figure 4, after being bored for the rolls.
Figure 3, shows the ring on the right hand end of the cage in Figure 4.
Figure 4 is a side elevation of the cage with the rolls in place.
Figure 5 represents one of the rolls.
Figure 6 shows a cross section of the cage alone on line z. Figure 2.
Figure 7 represents a gauge for holding the cage for drilling.
Figure 8 shows a modification of the way of holding the roll in the cage.
Figures 9 to 17, show details of a modification that will be hereafter explained.
Figure 18 is a sectional view of the gauge shown in Figure 7.
Similar numbers of reference designate corresponding parts throughout.
In carrying out my invention I take a sleeve or tube A, made of suitable metal
and of the proper diameter, the sides of the same being of considerable thickness,
and, starting at one end, I bore it from end to end of a uniform size a little larger
in diameter than the journal it is to be used upon. The outer surface of the
sleeve is then turned off until the sides are of a less thickness than the diameter
of the roll to be held in it, except that at the end from which the holes were bored
a strengthening flange r, is left, which extends around the sleeve.
This sleeve A, is then placed in the gauge shown in Figures 7, and 18, which
consists of two upright studs J and N, secured in a bed plate H'. Each stud J, N,
is provided with a hardened steel bar k, k', let into the sides of the studs opposite
to each other and are made concave in their outer edge faces so that they will
form parts of the same circle, and between which faces the twist drill n, will be
supported on two sides the whole length of the sleeve whilst drilling it.
The sleeve A, is placed over the stud N, with the flange, in the notch of
the bar, and the drill as in Figure 18, will drill in succession a series of holes
of the proper size for the rollers a, to turn easily in, nearly to the bottom of the
sleeve, leaving only a short portion to hold the bars together at that end, as the
drill cuts through on both the inside and outside of the sleeve except at the end
where the Hanger is, which flange holds the bars together at that end. The

page_text: holes in the sleeve may be spaced off whilst it is in the gauge by means of an
index or they may be marked off before putting the sleeve in the gauge, as the
result will be the same in either case.
The rolls a, a, Figure 5, are then prepared from round bars of metal of a size
to easily fit and rotate within the bearings formed by the concaved surfaces of
the bars h, the ends of these rolls being rounded or slightly cone shaped to avoid
friction with the ends of the cage. The bearing holes or slots v, in the cage
being filled with a like number of rolls, I secure ring i, over the open ends of said
slots by bolting or screwing it to the flange r; to which it corresponds in size and
shape by means of the screws or bolts p. The bearing is now complete and can be
shipped without danger of the rolls falling ont. When it is to be placed in
position in a journal box, I cut away a portion of the inner surface of said box at
the end, to admit the entrance therein of the flange r, and the ring i, as is shown in
Figure 1. The ring i, may be omitted however, and the inner ends of the
rolls a, a, allowed to bear against the collar on the shaft, or a groove may be made
in the end of the bars inside the flange and a wire ring g Figure 14, sprung in as
shown in Figure 8, to keep the rolls in when handled. When' in operation, those
portions of the rolls extending beyond the outer surface of the cage will bear
against the inner surface of the journal-Box, while the portions of the rolls
extending beyond the inner surface of said cage will bear against the journalled
portion of the shaft, the end of which is generally surroun.led with the collar H,
secured in place on the shaft by the set-screw s.
It will be readily seen that the twisting or torsional strain either on the cage or
on the rolls is entirely prevented' by this device, the cage being free to revolve and
'the rolls to rotate in their bearings, in which they are held perfectly parallel
to each other and to the line of the shaft, it being impossible for one end of a
roll to move faster than the other, which is usual' in' roller bearings.
When it is not desirable to make a recess in the end of the box to admit the
ring, I modify the construction somewhat as shown in Figures 9 to 17, as follows:
The cage for holding the rollers is constructed in a way similar to that described
above; and then making a ring of metal D, of the same diameter, inside and
outside, as the tube, and counterboring one face of the ring with a counterbore
having a hollow centre of the same size as the holes drilled in the cage, so as to
leave a series of projections b, Figures 11 and 13, that will just fit into the holes
drilled in the cage leaving recesses e, e between the projections b, b, that will just
receive the ends of portions, left between the holes in the cage. This ring or
cap D, is then pressed on to the end of the drilled' cage, the projections b, b, on
the cap entering the holes drilled in the cage, then placing the cage with the
cap on the end of it on an arbor, and turning off in a lathe, the flange r, and
If the
cap D, to the same size as the rest of the cage, as shown in Figure 9.
end cap D, is now removed, the cage A, would appear as represented in Figure 10,
but before removing the end cap D, a groove, is turned in the periphery, just
far enough from the outside of the cap to cut across both the projections b, on
the face of the cap, and the bars h, of the cage, a little way on from their ends,
so that ring 9, of wire, represented in Figure 14. fitted to spring into this groove
and be level with the surface of the bars of the cage A, will hold the cap D,
securely to the end of the bars. By spring the ring g out of the groove, the cap
can be removed and the rollers a, a, put in between the bars h, then the cap is
again put on, with the projection & entering between the bars h, as described, the
ring g, is then sprung into the grooves, and the bearing is complete for use.
Both ends of the bars of the cage may be held in same way as last described
for the ring end, this is shown in Figure 15, with one of the bars shown in side
view, in Figure 16, and in cross section in Figure 17.
For the purpose of application to shafts in running position the cages may be
divided lengthways through the centre of opposite bars and in cages using the wire
ring fastening seen in Figures 9 and 15, the ring can be made in two halves and its
ends turned in to holes made in the bars.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. A roller bearing cage consisting of a tube or sleeve of parallel bars the adjacent
sides of which are made oppositely concave and are connected at one end by a solid
portion integral with said bars, and at the other end by the perforated flange, of a
diameter greater than the diameter through the barred portion, forming an integral
part thereof, the antifriction-rolls, held between the concaved surfaces of the
bars, and the ring adapted to secure said rolls in place substantially as described.
2. In a roller bearing, a cage to hold the rolls, consisting of a series of parallel
bars solidly connected together at one end, and forming receptacles between them
to receive the rolls, and closed at their other ends by a cap having projections,
entering into the spaces between the ends of the bars, with said cap and rolls,
and means for holding said cap to the bars, all said parts combined substantially as
described.
3. In a roller bearing, a cage to hold the rolls, consisting of a series of parallel
bars connected together at both ends by caps having projections entering into the
spaces between the ends of the bars, with said caps and rolls, and means for holding
said caps to the bars, all said parts combined substantially as described.
4. A roller-bearing cage connected solidly together at both ends and having a
groove in the ends of the cage bars to receive a ring to retain the rolls in com-
bination with a ring to occupy said groove and a set of rolls to run between said cage
bars, substantially as described.
5. A roller-bearing cage consisting of a series of bars solidly connected together
at both ends with means, substantially as described, for retaining the rolls between
the bars when not applied to a journal.
6. A roller-bearing cage consisting of a series of bars connected together at both
ends in a substantially solid manner with means for retaining the rolls between
the bars when not applied to a journal.
Dated this ora as
ΟΙ
1890.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.