Improvements in or relating to Gear Cases for Cycles.
Year: 1896

page_text: Date of Application, 8th Jan., 1896
Complete Specification Left, 8th Oct., 1896-Accepted, 21st Nov., 1896
PROVISIONAL SPECIFICATION.
Improvements in or relating to Gear Cases for Cycles.
We, JAMES RICHARD TRIGWELL of 146 Brixton Hill, County of Surrey,
Cycle Manufacturer and THE ALUMINIUM CYCLE FITTINGS COMPANY
LIMITED of 164 Clerkenwell Road, County of Middlesex, Manufacturers, do
hereby declare the nature of this inveution to be as follows:-
This invention relates to gear cases for cycles, the points aimed at being the
fixing of the case and the closing of the openings against the admission of dirt.
The fixing relates particularly to the bracket or attachment by which the case
is secured to the tube or tubes, usually only one, which passes through the
case.
In carrying out this part of the invention we provide a suitable bracket or clip
which may be formed of one or more pieces preferably of metal suitably shaped to
fit the tube and drawn together in any convenient manner say by one or more bolts
and nuts. To cach end of this clip we connect in any convenient manner say by
turning up the end of the clip and passing through it a bolt or equivalent, a yoke
or other device, adapted to engage with the interior of the gear case, and also
adapted to accommodate itself to the position and inclination of the gear case.
A convenient means for providing this accommodation is to slot the yoke, the neck
of the before mentioned bolt passing through this slot so that the yoke may turn
about the bolt as upon a pivot and may also slide upon it so as to accommodate
itself to the plane in which the gear case lies. Means other than the bolt and
slot above described may however be employed for connecting the clip with the
movable yokes.
To connect the yoke with the gear case we provide upon the latter any suitable
form of sockets into which one or both limbs of the yoke may enter; the sockets
need not be of the same width as the yokes and may with advantage be made
considerably longer so as to provide for longitudinal adjustment. The socket may
be made by securing to the case a strip of metal or other material so that the yoke
will enter between the strip and the gear case, felt or other suitable material being
employed if desired to prevent noise.
Although for convenience of adjustment we prefer to make the bracket in the
three parts above described, the clip and the two yokes, we do not bind ourselves
to make all or any of these parts separate as if desired the whole bracket may be
made rigid, accommodation being provided by the adjustment allowed for in the
gear case socket, and other adjustment provided by bending the parts of the
bracket. Or the clip and one yoke may be rigidly connected and the other yoke
may be separate. Or portions of one or both of the yokes or yokes and clip may
be adjustable in relation to other parts.
The dirt excluding device consists of a slotted or perforated plate or piece of the
metal or other material, say aluminium-of which the gear case is constructed,
pivotted to the case in such a manner that while embracing the axle, it can easily
turn about its centre so as to allow of the adjustment upon the axle of the gear
case which may be slotted radially or otherwise to allow of its taking up its proper
position about the axle. This pivotted plate may be placed on one or both sides

page_text: of the case and wherever required may be used by itself or in conjunction with a
slide or sliding fork if required.
Dated this 8th day of Tano 1900
BOULT & WADE,
Agents for the Applicants.
improvements in or relating to Gear Cases for Cycles.
We, JAMES RICHARD TRIGWELL of 146 Brixton Hill, County of Surrey,
Cycle Manufacturer and THE ALUMINIUM CYCLE FITTINGS COMPANY
LIMITED of 164 Clerkenwell Road, County of Middlesex, Manufacturers, 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:-
This invention relates to gear cases for cycles, more particularly to a bracket or
attachment by which the case is secured to the tube or tubes, usually only one,
which passes through the case.
In the accompanying drawings
Fig. 1 is a perspective view of one form of device constructed in accordance with
our invention.
Fig. 2 is an elevation partly broken away, showing the application of the same
for the purpose of attaching the gear case to the cycle frame.
Fig. 3 is a perspective view of a modified form of the device.
Like letters indicate like parts throughout the drawings.
We construct a suitably shaped clip or bracket A (Fig. 1) of a piece of metal,
shaped to fit the tube and provided with lugs or ears A having holes in them
through which a bolt B passes, by means of which the clip A is securely attached
to the tube. A nut C is attached by brazing or otherwise to the clip A, or may
be formed in one with the latter. This nut is adapted for the reception of a
screw D. A metal yoke E having a slot Et cut in its central portion and running
transversely is attached to the clip A by the screw D which passes through the
slot E', a spring washer F being preferably interposed beneath the head of the
screw D. Holes are bored in the sides of the yoke E through which passes a
screw bolt G, by means of which the sides of the gear case are attached to the
yoke, this bolt being provided at one end with a loose washer G interposed at one
end between the head of the bolt and the side of the yoke, and a nut G2 screwing
on its other end. Two of these clips are preferably employed as shown in Fig. 2,
one being utilised to hold the upper part of the gear case, while the other has the
lower part attached to it. The slot E' in the yoke allows the latter to be adjusted
so as to be in alignment with the chain the spring washer effectually preventing the
screw D from shaking loose.
After the clips have been attached to the tube H and adjusted in accordance
with the position of the chain, the upper and lower halves J J of the gear case
are placed in position and the bolts G passed through the sides of the gear case and
the yokes E and nuts G² screwed up, the arrangement being such that one side of
the gear case is held between the washer G and one side of the yoke E, while the
other side of the gear case comes between the other side of the yoke and the
nut G.
In the modification illustrated in Fig. 3 the clip is constructed of two parts A²
and A³ which are united by screws or bolts B. A yoke E similar to that described
in reference to Fig. 1 is attached by a screw or bolt to each end of the piece A²;
in this case it will be seen that a single clip carries a yoke for the support of each
half of the gear case.

page_text: It is obvious that other means than the bolt and slot above described may be
employed for connecting the clip with the adjustable yoke.
Although for convenience of adjustment we prefer to make the whole device in
two or three parts, the clip and the yoke or yokes, we do not bind ourselves to
make all or any of these parts separate, as if desired the whole device may be
made rigid, accommodation being provided by the adjustment allowed for in the
gear case socket and other adjustment provided by bending the parts of the
bracket device. Or the clip and one yoke may be rigidly connected and the other
yoke separate and adjustable, or portions of one or both of the yokes, or yokes and
clip, may be adjustable in relation to other parts.
If desired the whole or any part of the above-mentioned adjustable device for
attaching cycle gear cases to the framing may be made of aluminium, though
other metals may equally well be employed.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, we declare that what
we claim is ;-
1. An adjustable yoke for attaching a cycle gear-case to the framing.
2. In a cycle gear-case the combination with a clip attached to the framing of
one or more yokes to which the gear case is secured, these yokes being adjustable
on the clip substantially as described.
3. The combination and arrangement of parts constituting the complete device
for attaching cycle gear cases to the framing substantially as described and
illustrated in Figures 1 and 2 of the accompanying drawings.
4. The combination and arrangement of parts constituting the complete device
for attaching cycle gear cases to the framing substantially as described and
illustrated in Figure 3 of the accompanying drawings.
Dated this 5th day of October 1896.
J. R. TRIGWELL.
THE ALUMINIUM CYCLE FITTINGS CO. LD.,
WM. GODDARd,
Managing Director.
Boult & Wade,
Agents for the Applicants.