Improvements in the Bearings of the Shafts of Machinery and other Rotating Shafts, Axles, and Spindles.
Year: 1889

page_text: Date of Application, 31st May, 1889
Complete Specification Left, 21st Feb., 1890-Accepted, 5th Apr., 1890
PROVISIONAL SPECIFICATION.
Improvements in the Bearings of the Shafts of Machinery and other
Rotating Shafts, Axles, and Spindles.
We CHARLES TAYLOR the Elder and GEORGE BENJAMIN TAYLOR both of Edmund
Street Birmingham in the County of Warwick Machinists do hereby declare the
nature of this Invention to be as follows:-
Our invention has reference principally to the overhead driving shafts of work-
shops and the spindles of lathes but is also applicable to the axles of carriages and
other vehicles and to rotating shafts axles and spindles generally.
We will describe the said invention as applied to the spindle of a lathe. Instead of
making the headstock of the lathe in which headstock the rotating spindle works in
the ordinary way each of the two cheeks or uprights of the headstock is cast solid or
with a hole for the neck of the spindle to work in. When the headstock is cast
without holes for the spindle the said holes are made by drilling. When holes are
cast in the headstock they are finished by rimering. In one side of the casting and
in the plane in which the axis of the hole is situated we saw a slot the said slot
extending from the outside of the casting to the hole described or it may be
continued some distance on the other side of the said hole the cheeks or uprights
of the headstock being thus divided on one or both sides of the hole. The cheeks of
the headstock thus divided are capable of a slight opening and closing at the slot in
consequence of the elasticity of the metal. The hole into which the slot opens and in
which the spindle works can consequently be slightly enlarged or diminished by
the separation or approach of the divided parts. The opening and adjustment of the
divided parts and the enlargement and contraction of the hole is effected by the
end of a screw working in one part bearing against the other part. By driving home
the said screw to a greater or less extent the divided parts may be separated to the
required extent and may be locked in their adjusted position by a screw bolt and nut
or other like fastening.
Instead of making one slot extending from the outside of the casting to the hole
in it we sometimes make two or more slots but in these cases the slots extend from
the hole nearly to but do not reach the outside of the casting. When we make two
slots they may be made in the same plane and an adjusting screw and clamping
screw may be used on each side of the hole. Or the two slots may be made in planes
inclined to one another. Where more than two slots are employed we prefer to
arrange them in planes radiating from the axis of the spindle one of the said slots
extending to the outside of the casting.
Where the hole in which the spindle works has but one slot opening into it we
prefer to employ a tubular bush divided on one side the division in the bush coinciding
by preference with the division in the hole. Brasses or bushes of the ordinary kind
may however be employed in some of the modifications of our invention.
The application of our invention to shafts axles and spindles other than the spindles
of lathes differs in no essential respect from its application to the spindles of lathes
as hereinbefore described.
1000
W. T. WHITEMAN,
Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in the Bearings of the Shafts of Machinery and other
Rotating Shafts, Axles, and Spindles.
We CHARLES TAYLOR the Elder, and GEORGE BENJAMIN TAYLOR both of Edmund
Street Birmingham in the County of Warwick Machinists do hereby declare the nature
of our invention and the manner in which the same is to be performed to be particularly
described and ascertained in and by the following statement :-
Our invention has reference principally to the overhead driving shafts of workshops
and the spindles of lathes but is also applicable to the axles of carriages and other
vehicles and to rotating shafts axles and spindles generally.
We will describe the said invention as applied to the spindle of a lathe. Instead
of making the headstock of the lathe in which headstock the rotating spindle works
in the ordinary way each of the two cheeks or uprights of the headstock is cast solid
or with a hole for the neck of the spindle to work in. When the headstock is cast
without holes for the spindle the said holes are made by drilling. When holes are
cast in the headstock they are finished by rimering. In one side of the casting and
in the plane in which the axis of the hole is situated we saw a slot the said slot
extending from the outside of the casting to the hole described; or it may be con-
tinued some distance on the other side of the said hole; the cheeks or uprights of
the headstock being thus divided on one or both sides of the hole. The cheeks of
the headstock thus divided are capable of a slight opening and closing at the slot or
slots in consequence of the elasticity of the metal. The hole into which the slot opens
and in which the spindle works can consequently be slightly enlarged or diminished
by the separation or approach of the divided parts. The opening and adjustment of
the divided parts and the enlargement and contraction of the hole is effected by the
end of a screw working in one part bearing against the other part. By driving
home the said screw to a greater or less extent the divided parts may be separated
to the required extent and may be locked in their adjusted position by a screw
bolt and nut or other like fastening.
Instead of making one slot extending from the outside of the casting to the hole in
it we sometimes make two or more slots but in these cases the slots extend from the
hole nearly to but do not reach the outside of the casting. When we make two slots
they may be made in the same plane and an adjusting screw and clamping screw may
be used on each side of the hole. Or the two slots may be made in planes inclined
to one another. Where more than two slots are employed we prefer to arrange them
in planes radiating from the axis of the hole and spindle one of the said slots extending
to the outside of the casting.
Brasses or bushes of the ordinary kind may be employed in some of the modifications
of our invention.
Figure 1 of the accompanying Drawings represents in vertical section the upper or
bearing part of one of the cheeks of the headstock of a lathe for receiving the rotating
spindle or shaft, the said upper or bearing part of the said cheek being constructed
according to one of the arrangements of our invention. a is the cheek or upright of
the headstock and b is the hole cast or drilled in the upper or bearing part of the same
in which hole the rotating spindle works in the ordinary way; c is a horizontal slot
situated in the plane of the axis of the hole the said slot extending from the out-
side of the cheek to the hole b and d is a second horizontal slot in the same plane as
the slot c; the said second slot d extending some distance on the other side of the
hole 6 but not to the outside of the cheek a as represented. The slots c and d are
made in the cheek by sawing. The cheek of the headstock divided in the manner
represented is made capable of a slight opening and closing at the slots c d in con-
sequence of the elasticity of the metal and the hole 6 in which the spindle works and
into which the slots c d open can consequently be slightly enlarged or diminished to
compensate for the wear of the spindle and hole and to very accurately adjust the size

page_text: of the hole in the bearing to the diameter of the spindle to be used with the
headstock.
The separation or approach of the divided parts of the elastic bearing of the cheek a
is effected by the set screw e screwing through one of the divided parts and its end
bearing against the other divided part. By driving home the set screw e to a greater
or less extent the divided parts of the elastic bearing of the cheek may be separated
to the required extent and locked in their adjusted position by the screw bolt f
The second horizontal slot & may be omitted but we prefer to employ the two
slots cd as the bearing is made more efficient by their use.
Figure 2 represents in vertical section another arrangement of the elastic bearing.
In this arrangement the two horizontal slots g, h extend in the same plane from
opposite sides of the hole b in which the spindle works nearly to the outside of the
cheek of the headstock and an adjusting screw pin i and clamping screw k are used
on each side of the hole b as represented.
Or the elastic bearing may be provided with more than two slots.
Figure 3 represents an arrangement of our invention in which three radial
slots l, m, m are used, the upper slot passing to the outside of the cheek but the
other slots m m terminate within the cheek. In this arrangement the adjusting
p is arranged concentrically about the locking or clamping screw q as
screw
represented.
Figure 4 represents another arrangement of the elastic bearing in which arrange-
ment a series of radial slots is used the long top radial slot r passing to the outside
of the cheek being used in combination with a series of shorter slots s s terminating
within the cheek; t is the adjusting screw and u is the locking screw bolt fastened
by a screw nut.
The application of our invention to shafts, axles and spindles other than the
spindles of lathes differs in no essential respect from its application to the spindles of
lathes as hereinbefore described and illustrated in the accompanying Drawings.
Having now particularly described and ascertained the nature of our invention
and the manner in which the same is to be performed we declare that what we
claim as our invention of "Improvements in the bearings of the shafts of machinery
and other rotating shafts axles and spindles :-
Constructing an elastic bearing for rotating shafts axles and spindles by dividing
the bearing part of the cheek; upright or support by one or more slots opening into
the hole in which the shaft axle or spindle works so that the divided or slotted bearing
is capable of a slight opening and closing at the slot or slots and the consequent
enlargement or diminution of the spindle or axle hole; and the combination with
the said elastic bearing of an adjusting screw and clamping screw or adjusting screws
and clamping screws substantially as herein before described and illustrated in the
accompanying Drawings.
n this 10th day of February 1890
CHARLES TAYLOR, SENR.
GEORGE BENJAMIN TAYLOR.