An Improvement in Spring Apparatus for use with Wheels and other purposes.
Year: 1892

page_text: Date of Application, 5th Sept., 1892
Complete Specification Left, 29th Mar., 1893-Accepted, 2nd June, 1893
PROVISIONAL SPECIFICATION.
An Improvement in Spring Apparatus for use with Wheels and
other purposes.
ISIDORE MAC WILLIAM BOURKE Doctor of Medicine 40 Redcliffe Square
London S. W. do hereby declare the nature of this invention to be as follows:-
By means of tubular sliding or telescopic arrangement of the bar or other means
of connecting the axle box of wheel and the hub, to prevent torsion whilst admitting
free motion in the vertical plane-and I also use rollers or ball bearings to facilitate
free motion between the various parts of the mechanism when necessary to insure
their working easily the attachment of the sliding bars may be by running on bars
attached to the hub or in other-convenient manner and the attachment to axle box
may be similar.
The apparatus before mentioned which may be called a driver is shewn by
accompanying drawings as used with rear wheel of bicycle, it is also of use with
any spring apparatus used at the centre of a wheel or in any apparatus where the
axle box or corresponding parts in any apparatus are required to be attached
firmly to the hub to which spokes are attached so that both shall rotate together
whilst at the same time allowing free motion of the springs within the hub in the
vertical plane in any direction. Any elastic media, compressed air, india rubber,
metallic springs, cork etc. may be interposed between the hub and the axle box or
axle tree as the spring.
The various other means of effecting the end mentioned in my Specification,
telescopic, tubular etc., will be shewn in drawings with Complete Specification.
The driving movement herein alluded to being attached as may be convenient
or necessary to the axle box or axle tree & hub or other corresponding part of
any apparatus requiring the peculiar movement, even where springs are not
necessary.
The apparatus consists of one frame sliding on bars with another frame sliding
on it to which the axle box or axle tree or corresponding part of any mechanism is
attached and the apparatus is furnished with a cap to keep out dust if required &
has a constant oil supply.
ISIDORE MCWM. BOURKE, M.D.,
40, Redcliffe Square.
COMPLETE SPECIFICATION.
An Improvement in Spring Apparatus for use with Wheels and
other purposes.
ISIDORE MAC WILLIAM BOURKE Physician 40 Redcliffe Square London S.W.
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, references being had to the accompanying drawings:-
-
The invention which may be called a driver is composed of several slides or their
equivalent as hereafter described and figured has for its object connection of the
axle box or axle tree of a wheel with a hub from which the spokes spring so that
both shall rotate together whilst permitting free motion in the vertical plane the
different methods which I adopt in the construction of my apparatus are shewn in
the accompanying drawings. With wheels requiring the use of springs any elastic
media may be interposed between the axle tree or axle box and hub, compressed
air metallic springs india rubber etc. may be used. In using compressed air as a
[P]

page_text: spring a pneumatic tube formed of alternate layers of some inelastic material and
india rubber is preferred the number of layers to be proportioned to the weight
carried. A double hub the inside revolving on the outer one and a loose sleeve on
the axle box or without either of these may be used with the pneumatic tube but
are not essential. In using metallic springs they may be of any convenient shape
or pattern but those of the shape and with the attachment shown in drawings
Figure 5 are preferred.
The arrangement of the slides as shewn in Figure I is a half end elevation where
the driver is used with rear wheel of bicycle are those where no ball bearings are
used.
A. External slide fixed to axle box or axle tree.
B. Internal slide running on cross bars.
C. Cross bars or frame.
D. Space for elastic media.
E. Axle box or axle trec.
F. Flange for attachment of spokes.
G. Adjusting nuts.
H. Chain wheel.
These slides can also be used inside the hub that is resting on the cross bars or
other convenient attachment from the inside of the hub, in certain cases only one
set of slides at one side may be used or one set only may be used in the centre of
the hub or several sets in certain cases as may be convenient or the slides may be
used in any convenient position in or upon the hub. The external slide A moves
on the internal slide and drives it B moves on the cross bars C and drives it, and
through it the wheel the external slide is fixed to the axle box or axle tree
adjusting screws as shewn may be used or any other convenient arrangement and
the slides may be V shaped or any other convenient form. The driving arrange-
ment is applicable to wheels of all descriptions.
Figure is a half end elevation. Letters represent similar part as Fig. I.
Figure II is an end elevation shews the same slides with the ball bearing or ball
slide movements.
A. External slide fixed to axle box.
B. Internal slide running on cross bars.
C. Cross bars or frame.
D. Space for elastic media.
E. Axle box or axle tree.
F: Flange for attachment of spokes.
And. it also as above mentioned can be used inside or outside or upon the hub and
may be fixed in any covenient position and one or more sets of slides may be used.
The movement here is similar to that described in Figure I the opposing surfaces
of the slides and frame however being grooved to hold the ball bearings and the
groove in one face of the slides is divided by stops into two or more spaces con-
taining one or more balls in each the opposing groove not having stops fixed in it.
Figure is a part sectional side elevation L is lug for attachment of spring
to hub. Mis lug for attachment of spring to axle box or axle tree lettering
similar to lettering in Figure II.
Figure III is an end elevation or the telescopic arrangement with a cruciform
arrangement of the telescopic slides.
A. Telescopic arrrangement fixed to axle box or axle tree.
B. T piece moving on interual frame or cross bar.
C. Cross bar or frame.
E. Axle box.
F. Flange for spokes.
They also can be used as in the two previous instances and most convenient
place and number singly or in pairs or as many as may be required instead of the
four telescopic slides as shewn only two may be used in certain cases and ball
bearings may be used on the Ț portion sliding on the cross frame. Chain and bars

page_text: means described for forming the driving arrangement may be attached to the axle
box or axle tree in any convenient manner and number.
The boss shewn as fixed to the axle box or axle tree is with the telescopic slides
attached the equivalent of the external slide described in Figure I and II and is
provided with the telescopic slides as figured.
The external shaped portion is equivalent to the internal slides and is free to
move on the cross frame and the telescopic action of the arms permits a similar
movement of the axle tree or axle box within the hub to that previously shewn.
Ball bearings may be used in the Ț shaped portion proper grooves being provided
for them.
Figure IV is an end elevation shews the driver arrangement running on rollers.
A. External frame or slide.
B. Internal do.
C. Cross bars or frame.
D. Space for elastic media.
E. Axle box or axle tree.
F. Flange to which spokes are attached.
But ball bearings may be used instead of rollers and similarly to Figure 1-1|-|||
it can be used in the most convenient place and number. This arrangement may
be described as a double ended lever A fixed upon the axle tree or axle box and
provided with two rollers-these rollers are free to move on the secondary frame B
and drives it and B moves on the cross bar or frame C, and drives it.
Figure IV shows an end elevation of the arrangement of driver with rollers.
Figure V shews barrel shaped metallic spring and attachment any other con-
venient forms of spring may be used these springs pivot at the axle box or axle
tree and the hub and these pivots points are provided with lugs L & M. Figure II*
to which the springs are attached.
India rubber springs are shewn in Figure VI any convenient shape and size
may be used the arrangement of the springs is the same in all the foregoing
alternative methods and position of the axle box or axle tree in the hub is
dependant on the resiliency of the spring.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is
I. In wheels a driving mechanism connecting the hub to the axle or axle box
allowing while operating free motion in the vertical plane or substantially as
described in the several figures of the drawings annexed.
II. In wheels the combination of the driving mechanism substantially as claimed
in Claim I with the springs or their equivalent as illustrated in the drawings
annexed operating substantially as for the purposes set forth.
March 29th 1893.
D. Space for elastic media.
E. Axle box or axle tree.
F. Flange to which spokes are attached.
But ball bearings may be used instead of rollers and similarly to Figure 1-11-11
it can be used in the most convenient place and number. This arrangement may
be described as a double ended lever A fixed upon the axle tree or axle box and
provided with two rollers-these rollers are free to move on the secondary frame B
and drives it and B moves on the cross bar or frame C, and drives it.
Figure IV shows an end elevation of the arrangement of driver with rollers.
Figure V shews barrel shaped metallic spring and attachment any other con-
venient forms of spring may be used these springs pivot at the axle box or axle
tree and the hub and these pivots points are provided with lugs L & M. Figure I^
to which the springs are attached.
India rubber springs are shewn in Figure VI any convenient shape and size
may be used the arrangement of the springs is the same in all the foregoing
alternative methods and position of the axle box or axle tree in the hub is
dependant on the resiliency of the spring.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed declare that what 1
claim is
I. In wheels a driving mechanism connecting the hub to the axle or axle box
allowing while operating free motion in the vertical plane or substantially as
described in the several figures of the drawings annexed.
II. In wheels the combination of the driving mechanism substantially as claimed
in Claim I with the springs or their equivalent as illustrated in the drawings
annexed operating substantially as for the purposes set forth.
March 29th 1893.
ISIDORE MAC WILLIAM BOURKE, M.D.