An Improved Tumbler Bearing for Shafts.
Year: 1886

page_text: Date of Application, 22nd May, 1886.
Compléte Left, 22nd Feb., 1887.
Complete Accepted, 29th Mar., 1887.
PATIONAL DI MULTICATION.
An Improved Tumbler Bearing for Shafts.
We, WILLIAM HENRY VAUGHAN of Fairfield, near Manchester, in the county of
Lancaster, Engineer, and THOMAS FOSTER of 221 Ridgway Street, Butler Street,
Manchester, in the same county, Engineer, do hereby declare the nature of this
Invention to be as follows:-
-
The automatic shaft support which forms the subject of our invention is designed
for application to travelling cranes,, lathes, planing machines, and other machinery
where a long shaft or screw is used and where fixed bearings are inadmissible, but
where a support is required to prevent bending of the said shaft or screw.
The apparatus consists essentially of a frame formed of cast iron or other suitable
material, having a sliding piece fitted within it to slide at right angles to the axis of
the shaft which is to be supported.
The outer end of the said sliding piece is provided with a seat formed of brass or
other suitable material, in which said seat the shaft to be supported may revolve freely
when the sliding piece is brought in contact therewith.
The required motion is given to the said sliding piece by means of a reciprocating
inclined plane, within the aforesaid frame, which engages with a suitably formed slot
in the sliding piece, so that the motion of the inclined plane in one direction forces
the sliding piece outwards in contact with the shaft, while the motion of the said
inclined plane in the opposite direction withdraws the sliding piece into the frame
clear of the shaft. Flat steps are provided at the top and bottom of the inclined
plane, so that the sliding piece has firm and direct support when in either of the two
required positions.
A stud provided with a roller is affixed to the said inclined plane, and the said roller
enters a suitably formed groove or guide on a plate which is attached to the crab (in
the case of a travelling crane) or to the worm box, gearing head, or other part of the
machine moving along the shaft for giving motion to the said machine or to any part
of the said machine, and by this means the required motion is given to the said
inclined plane, and in consequence to the said sliding piece as before described.
Our improved apparatus may be arranged to be worked either vertically, horizontally,
or diagonally in accordance with the position or direction of the particular shaft to
which it is to be applied.
1
33
1 1
35
1000
AMBROSE MYALL, C.E.,
Agent for the Applicants.

page_text: An Improved Tumbler Bearing for Shafts.
We, WILLIAM HENRY VAUGHAN of Fairfield, near Manchester, in the county of
Lancaster, Engineer, and THOMAS FOSTER of 221 Ridgway Street, Butler Street,
Manchester, in the same county, 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:-
The automatic shaft support which forms the subject of our invention is designed
for application to travelling cranes, lathes, planing machines, and other machinery
where a long shaft or screw is used and where fixed bearings are inadmissible, but
where a support is required to prevent bending of the said shaft or screw.
In the accompanying five sheets of drawings, Figure 1 is a front elevation, Figure 2
a cross-sectional elevation through the line XX on Figure 1, and, Figure 3 a plan of
an improved tumbler bearing constructed according to our invention. Figure 4 is a
front elevation of the sliding bearing detached from the rest of the apparatus.
Similar letters of reference denote similar parts throughout the drawings.
A is a frame formed of cast iron, or other suitable material, and secured to any
convenient means of support, by the flanges shewn in Figures 1 and 3 and having a
recess A, in which a sliding piece B is fitted to slide at right angles to the axis of the
shaft C, which is to be supported.
A plate A, bolted to the frame A, retains the sliding piece B in the recess A¹ and
permits of adjustment for wear.
The outer end of the sliding piece B is provided with a seat, or half-bearing D,
formed of brass or other suitable material, in which said scat the shaft C
freely when brought in contact therewith."
may revolve
The required motion is given to the sliding piece B in the following manner.
A slot B is formed in B, as shewn in Figure 4, having inclined edges B2, B².
A casting E, of similar cross-section for a portion of its length, to the slot B', and
having inclined faces E, E, is fitted to slide within the said slot and within openings
in the frame A and plat A2 and a guide A3 bolted to the plate A2, so that the direction
of motion of E is at right angles to that of B.
When E is moved in one direction, it forces B outwards into contact with the
shaft C and when moved in the opposite direction it withdraws B into the frame A,
clear of the shaft.
Flat steps E, E, are provided at the top and bottom of the inclined face E', so that
the sliding bearing B has firm and direct support and is locked by the said steps when
in either of the two required positions. A stud F, provided with a roller F', is affixed
to E, and enters a suitably formed groove or guide H in a plate or casting J attached
to the crab (in the case of a travelling crane) or to the worm box, gearing head, or
other part of the machine moving along the shaft C, to which machine, or to any part
thereof, motion is imparted by the said shaft.

page_text: Figure 5 is a plan of the plate or casting J, shewing the form of the groove or
guide H. By this means the required motion is given to the inclined plane E and in
consequence to the sliding bearing B.
Our improved apparatus may be arranged to be worked either vertically, horizontally,
or diagonally, in accordance with the position or direction of the particular shaft, to
which it is to be applied.
We wish it to be understood that in carrying out our invention in practice, we do
not necessarily confine ourselves to the exact details of construction herein shewn and
described, as the same may be modified to suit the particular machine to which the
apparatus is to be applied, provided that the essential features of the invention be in
all cases retained.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed, we declare that what we claim is :-
(1) The improved automatic tumbler bearing for shafts, constructed in the manner
and for the purposes substantially as herein shewn and described with reference to the
accompanying drawings.
•
(2) In an automatic tumbler bearing for shafts, the inclined plane E receiving a
reciprocating motion from a groove or guide H, or other suitable device, for advancing
and withdrawing the bearing B, substantially as herein described and shewn with
reference to the accompanying drawings.