Improvements in Anti Friction Journal Boxes.
Year: 1887

page_text: Date of Application, 15th Feb., 1887.
Specification Accepted, 22nd Mar., 1887.
Improvements in Anti Friction Journal Boxes.
I ALFRED JULIUS BOULT, of 323 High Holborn, London in the County of
Middlesex, Patent Agent, 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, reference being had also to the accompanying drawings
in which Figure 1 represents a central longitudinal section with part broken away, and
Figure 2 an end view of the same :-
This improvement relates to that class of anti-friction rollers in which gearing is
employed to keep the rollers in their proper relative position with respect to each other
around the main shaft; and the invention consists in the peculiar construction,
arrangement and combination of parts hereinafter more particularly described and then
pointed out in the claims.
Referring to the details of the drawing-A represents the shaft provided with a
collar B firmly fastened thereto and formed of the shape of two truncated cones with
their bases adjacent to or touching each other, and with teeth b formed substantially
in the centre of each cone.
Arranged around and supporting the collar are two sets of rollers C each formed of
the shape of truncated cones with their bases bevelled, as at c and each provided with
a ring of teeth c¹ that mesh with the teeth upon the roller B, and also with a ring
of teeth d upon the inside of the casing.
The casing is preferably formed, as shown in the drawing, in two parts D D¹ one
part (D) having the base d', formed integral therewith and other part (D¹) secured to
the part D by the bolts E and nuts F or otherwise. Between the two parts I prefer
to place one or more thicknesses of paper represented at G, so that by withdrawing
the paper and screwing up the nuts tighter on the bolts the wear that takes place in
the course of time may be compensated for, or any adjustment in "assembling" the
parts may be readily made.
It is important that all the bevels of the cones should be properly proportioned so as
to get the minimum of friction. I prefer an arrangement of bevels similar to that

page_text: shown in the drawing, but it is evident that this may be varied to some extent without
changing the spirit of my invention.
It will be seen that by the construction shown and described herein a new and
valuable arrangement of anti-friction rollers is produced whereby all or nearly all of
the friction is of the rolling variety and hence reduced to a minimum, the rollers are
all kept in their proper relative positions, and means for adjusting the parts or for
taking up wear provided; and besides these advantages, the parts are easy to make
and not liable to get out of order or wear out.
Having now particularly described and ascertained the nature of the said invention
as communicated to me by my foreign correspondent and in what manner the same
is to be performed, I declare that what I claim is ;-
1. In an anti-friction journal box, a shaft and suitable support for the same, said
shaft having a journal resting on said supports and formed in the shape of two truncated
cones with their bases adjacent to each other, and provided with teeth arranged around
the same, and meshing with teeth formed on said supports, substantially as described.
2. In an anti-friction journal box, a shaft provided with a bearing surface in the
shape of two truncated cones with their bases adjacent to each other, and each cone,
having teeth arranged around the same in combination with two sets of conical toothed
rollers whose teeth mesh with those on said bearing surface, substantially as described.
3. In an anti-friction journal box, a casing with teeth around the inside thereof,
and a shaft provided with a bearing surface in the shape of two truncated cones with
their bases adjacent to each other, and having teeth around the same, in combination
with two sets of rollers having teeth meshing with the teeth on the bearing surface
and with the teeth formed in the casing, substantially as described.
4. In an anti-friction journal box, a shaft provided with a bearing surface in the
form of two truncated cones with their bases adjacent to each other, and having teeth
around the same, in combination with two sets of conical rollers having teeth meshing
with the teeth on the bearing surface and a casing provided with means for drawing
the two sets of rollers closer together as desired substantially as described.
5. The combination of the casing D D' having two rings of teeth d formed in the
inner surface and provided with adjustable means, as the bolts E and nut F, with a
shaft having a bearing surface in the shape of two truncated cones with their bases
adjacent to each other, and having two sets of teeth formed around the same, and two
sets of conical rollers, cach having teeth which mesh with the teeth of the hearing
surface of the shaft and with teeth formed on the inside of the casing, substantially as
described.
6. The combination in a journal box, of a shaft provided with a bearing surface in
the shape of two truncated cones, with two sets of conical supporting rollers having
their bases bevelled where they touch, whereby they roll together without friction where
the come in contact, and a suitable casing in which the rollers turn, substantially as
described.
1L 15th dovre of February 1887