Improvements in Bearings for Shafts, Crank Pins, and for like purposes.
Year: 1896

page_text: Date of Application, 3rd June, 1896
Complete Specification Left, 2nd Mar., 1897-Accepted, 8th May, 1897
PROVISIONAL SPECIFICATION.
Improvements in Bearings for Shafts, Crank Pins, and for like
purposes.
I, WILLIAM JAMES HAY, of 9 Dalhousie Place, Arbroath, in the County of Forfar,
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to an improved form of adjustable bearing suitable for use in
connection with ordinary revolving shafting, for crank pins, connecting rods, and for
other like purposes; the object being to provide an automatically adjustable bearing
which will follow up the wear arising therein.
In carrying my invention into effect when constructing my bearing for use as a
connecting rod end, I form the brass on one side with an inclined surface or bearing
plate, and I provide in the crosshead a space sufficient for the reception of a slide
having a corresponding taper thereon to hear against the tapered surface of the
bearing block.
I prefer to make my bearing slide with a hollow centre or with two or more holes
therein, into which may be introduced keep bolts or a keep bolt having a shouldered
end for receiving a spring which encircles the reduced end of the bolt, while I form
the sliding conical plate with a smaller hole at the outer end to enable the reduced
stem of the bolt to pass through. By this reduction in size of the hole I am enabled
to provide two abutments for the spring, one acting on the screw, the other acting
against the adjusting sliding block, so that the tension of the spring is always being
exerted to cause the sliding block to travel up the incline of the brass, and thus to
keep it in correct position upon the revolving pin. I increase the tension or adjust
the tension of the spring to suit any desired degree of pressure or thrust which is to
be given to the sliding block by means of a nut at the screw or screws.
When forming a gib and cotter arrangement of brass I make my bolt with a
tapered end which passes throngh the brass bearing block and the slipper, and I allow
the conical adjusting piece to terminate in a screw which projects beyond the outer
surface of the slipper, and 1 pass a washer over the inner end of the screw to act as
an abutment for my adjusting spring at one end, while the outer abutment I provide
for by placing a washer with ordinary nuts or lock nuts thereon, so that the tension
of the spring can be adjusted to suit any desired requirement.
I employ the same method of adjusting brasses or bearings for ordinary shafting,
making two or more spring bolts with tapered wedge block surfaces for keeping the
bearing brass in position, modifying the arrangement of the cotter bolt and the form
of spring to suit the bearing block to which it is to be attached. I sometimes pin a
thin brass or other metal liner on the face of the wedge, which bears against the iron
cover or keep to prevent the two surfaces rusting.
1904
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.

page_text: Improvements in Bearings for Shafts, Crank Pins, and for like.
purposes.
I, WILLIAM JAMES HAY, of 9 Dalhousie Place, Arbroath, in the County of Forfar,
Engineer, 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:-
My invention relates to an improved form of adjustable bearing suitable for use in
connection with ordinary revolving shafting, for crank pins, connecting rods, and for
other like purposes; the object being to provide an automatically adjustable bearing
which will follow up the wear arising therein.
In the accompanying sheet of explanatory drawings-
Figure 1 is a sectional elevation of a connecting rod end showing my improved
method of adjustment and
Figure 2 is a bearing of an engine also shown in section having my adjusting
devices arranged thereon.
Fig. 3 is a sectional elevation of strap connecting rod end fitted with my improved
adjustment.
In carrying my invention into effect when constructing my bearing for use as a
connecting rod end A, I form the brass B on one side with an inclined surface or
bearing plate b and I provide in the crosshead a space sufficient for the reception of a
slide having a corresponding tapered surface c thereon to bear against the tapered
surface b of the bearing block.
I prefer to make my bearing slide with a hollow centre or with two or more holes
therein, into which may be introduced keep bolts or a keep bolt D having a shouldered
end d for receiving à spring E which encircles the reduced end of the bolt, while
I form the slide with a smaller hole c' at the outer end to make the reduced stem of
the bolt to pass through. By this reduction in size of the hole I am enabled to
provide two abutments for the spring, one d acting on the screw, the other C' acting
against the adjusting sliding block, so that the tension of the spring is always being
exerted to cause the sliding block to travel up the incline of the brass, and thus to
keep it in correct position upon the revolving pin. I increase the tension or adjust
the tension of the spring to suit any desired degree of pressure or thrust which is to
be given to the sliding block by means of a nut F at the screw or screws.
When forming a gib and cotter arrangement of brass as illustrated in Fig. 3,
I make my bolt with a tapered end d' which passes through the connecting rod end
and the strap, and I allow the conical adjusting piece to terminate in a screw D' which
projects beyond the outer surface of the strap, and I pass a washer cover the inner
end of the screw to act as an abutment for my adjusting spring E at one end, while
the outer abutment 1 provide for by placing a washer with ordinary nuts or lock
nuts thereon, so that the tension of the spring can be adjusted to suit any desired
requirement.
1 employ the same method of adjusting brasses or bearings G for ordinary shafting,
making two or more spring bolts with tapered wedge block surfaces for keeping the
bearing brass in position, modifying the arrangement of the cotter bolt and the form
of spring to suit the bearing block to which it is to be attached. I sometimes pin a
thin brass or other metal liner on the face of the wedge, which bears against the iron
cover or keep to prevent the two surfaces rusting.

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.) The improvements in bearings and the fittings for the adjustments thereof
substantially as and for the purposes herein before described.
(2.) In a bearing for a crank pin or other like revolving pin or shaft the combination
and arrangement of a tapered block or plate with a like tapered bearing surface and
having a bolt or bolts provided with a spring or springs for automatically keeping the
bearings or brasses in true contact with the pin or shaft substantially as hereinbefore-
described and as illustrated in the accompanying drawings.
Dated this 2nd day of March 1897
MARKS & CLERK,
18, Southampton Buildings, London, W.C., Agents.