Year: 1888

page_text: Date of Application, 28th Mar., 1888
Complete Specification Left, 27th Dec., 1888
Complete Specification Accepted, 12th Feb., 1889
We, WILLIAM HARGREAVES, and WILLIAM INGLIS, of Soho Iron Works, Bolton,
in the County of Lancaster, Engineers, do hereby declare the nature of this Invention
to be as follows, that is to say :-
Our said Invention has for its object to construct bearings for shafts, such as the
crank shafts of steam engines, in an improved and simple manner, and so that they will
accommodate themselves or become automatically adjusted with their bearing surfaces
truly parallel to the shafts.
In carrying out our Invention according to one modification we fit a base upon
a sole or sole plate so as to be free to turn to a small extent about a vertical
axis, such vertical axis passing, by preference, through the centre of the bearing. In
the upper side of the base we form a recess with a cylindrically concave bottom; and
to the recess we adapt a pillow block made with a cylindrically convex bottom to fit
the concave bottom of the recess. The axis of the cylindrical surfaces is at right
angles to the axis of the bearing surface formed in the upper part of the pillow
block or in a brass or other piece fitted therein. The cap of the bearing is fixed
to the pillow block in the ordinary way; and the pillow block is held down by bolts
passing through the base to the sole or foundation. The nuts of the bolts boar on
small blocks made with convex bottoms to fit concave recesses made for them in the pillow
block, the convex and concave surfaces being concentric with that of the bottom of
the pillow block. With this construction the pillow block can turn about a horizontal
axis at right angles to the shaft, whilst the pillow block and base together can turn
about a vertical axis.
According to a second modification the same capability of adjustment is obtained by
making the bearing bush with zonal spherical surfaces externally and providing
corresponding spherical surfaces in the pillow block and cap. At the middle of the
bearing the spherical surfaces will be of small radius, other surfaces near the ends of

page_text: the bearing being of larger radius. By making different parts of the spherical surfaces o
different radii as described, the bush can be made with less thickness and weight of metal
than when the spherical surface is made all of one radius large enough for the outer
ends of the bush. In some cases instead of a bush being used with spherical
surfaces all around it, the bottom only of a bush or of a pillow block may be 5
made spherical, the base being made with a concave spherical surface for the pillow
block or bush to rest upon, and one or more clips or stops being provided to limit the
extent to which the pillow block or bush can move on its concave bed.
the day of March 1888.

page_text: We, WILLIAM HARGREAVES, and WILLIAM INGLIS, of Solo Iron Works, Bolton,
in the County of Lancaster, Engineers, 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, that is to say :-
Our said Invention has for its object to construct bearings for shafts such as the
crank shafts of steam engines, in an improved and simple manner, and so that they
will accommodate themselves or become automatically adjusted with their bearing
surfaces truly parallel to the shafts.
In carrying out our Invention, according to one modification, we fit a base upon a
solo or sole plate so as to be free to turn to a small extent about a vertical axis, such
vertical axis passing by preference, through, the centre of the bearing. In the upper
side of the base we forin a recess with a cylindrically concave bottom; and to the
recess we adapt a pillow-block made with a cylindrically convex bottom to fit the
concave bottom of the recess. The axis of the cylindrical surfaces is at right angles
to the axis of the bearing surface formed in the upper part of the pillow-block or in a
brass or other piece fitted therein. With this construction the pillow-block can turn
about a horizontal axis at right angles to the shaft, whilst the pillow block and base
together can turn about a vertical axis.
According to a second modification the same capability of adjustment is obtained by
making the bearing bush with zonal spherical surfaces externally and providing
In some cases
corresponding spherical surfaces in the pillow block and cap.
instead of a bush being used with spherical surfaces all round it, the bottom
only of a bush or of a pillow block may be made spherical, the base being made
with a concave spherical surface for the pillow block or bush to rest upon, and one or
more clips or stops being provided to limit the extent to which the pillow block or
bush can move on its concave bed or to fix it when adjusted.
And in order that our said Invention and the manner of performing the same may be
properly understood we hereunto append two sheets of explanatory drawings to be
hereinafter referred to and representing three modifications of our improved shaft
bearings.
One modification is shown on sheet, 1, of the drawings, figure, 1, being a plan,
figure, 2, a sectional end elovation, figure, 3, a sectional side elevation, figure, 4, a
transverse vertical section, and figure, 5, a longitudinal vertical section. The second
modification is shown in longitudinal vertical section in figure, 6, on sheet, 2, and the
third modification is shown in figures, 7 to 11, which are a plan, a sectional end elevation,
a side elevation, a transverse vertical soction and a longitudinal vertical section.
these drawings the same reference letters are used to mark the same or like parts
wherever they are repeated.
In
In the modification shown on sheet, 1, of the drawings, a base, A, is made with
vertical cylindrical ends, B, to fit in concave parts of a recess in a sole plate, C, the
base, A, resting on the bottom of the recess and being made with a central down-
wardly projecting cylindrical flange, D, which fits a circular depression in the bottom

page_text: of the recess. The base, A, is on its upper side made with concave cylindrical
surfaces, E, F, which are of different radii but concentric; and counterpart convex
cylindrical surfaces are formed on the bottom of the pillow block, G, which rests on
the base, A. A cap or cover, H, is bolted down to the pillow block, G, in the usual
way, and the pillow block and cap aro represented as formed with bearings for the
shaft, J, and lined with white metal; brasses or other bearing pieces may however
be used if preferred. The pillow block, G, is held down by long bolts, K, which pass
down through holes in the pillow block, G, base, A, and sole plate, C, which holes are
made large enough to allow of a little adjustment. The nuts of the bolts, K, bear
upon small blocks, L, made with convex bottoms to fit concave recesses made for them
in the pillow block, G, these convex and concave surfaces being concentric with the
surfaces, E, F, of the bottom of the pillow block, and top of the base, A.
A simple example of the second modification is shown in figure, 6, on sheet, 2,1
comprising a fixed pillow block, M, with a cap, N, and with a pair of brasses or a
bush, P. The pillow block, M, and cap, N, are made with zonal spherical surfaces, Q, R,
which are concave and concentric but of different radii, and counterpart convex
surfaces are formed on the outside of the brasses or bush, P. The surfaces, Q, at the
middle of the bearing are of small radius, the other surfaces, R, near the ends being
of larger radius. By making different parts of the spherical surfaces of different radii
as described, the brasses or bush, P, can be made with less thickness and weight of
metal than when the spherical surface is made all of one radius large enough for the
outer parts of the bush.
In the third modification shown in figures, 7, to 11, a base or sole, S, and a pillow
block, T, which rests on it are made with spherical contact surfaces, U, allowing of
angular adjustment of the pillow block.in any direction. The cap, H, is bolted to the
pillow block, T, in the ordinary way. This modification is suitable for heavy flywheel
shafts or others which have no tendency to rise. The pillow block, T, is made with
projections, V, at the sides, and clips or stops, W, are bolted to the solo, S, to extend
inwards over the projections, V, for the purpose of checking any movement of
the pillow block, T, or to hold and steady it when it has been adjusted in position.
Having now particularly described and ascertained the nature of our said Inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. Constructing bearings for shafts substantially as herein before described and as
shown in figures, I, to 5, of the accompanying drawings.
2. Constructing bearings for shafts substantially as hereinbefore described and as
shown in figure, 6, of the accompanying drawings.
3.-Constructing bearings for shafts substantially as hereinbefore described and as
shown in figures, 7, to 11, of the accompanying drawings.
Dated this Twenty-sixth day of December 1888.
EDMUND HUNT,
Applicant's Agent.