A New or Improved Gear Case for Velocipedes.
Year: 1895

page_text: Date of Application, 8th Apr., 1895-Accepted, 11th May, 1895
A New or Improved Gear Case for Velocipedes.
I, WILLIAM MURRAY, of 97A, Chapel Street, Aberdeen, Cycle Manufacturer,
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 a new or improved gear case for velocipedes and has for
its object to provide a gear case of simple construction which shall serve as an
effectual cover or case for the chain gear of a velocipede, while it can be attached
or detached in a few minutes and access readily obtained to the chain and chain.
wheels at any time.
In carrying my invention into practical effect, my improved gear case is
constructed of any suitable material and in two parts, the lower part enclosing the
greater part of the chain wheels and chain, and the upper part or lid, having a
double flange running around same, which is placed over the aforesaid lower part.
and secured in position in such a manner that the inner flange enters the inside of
the lower part of the gear case, while the outer flange embraces the outside of the
said case, the edges of which are thus enclosed between the two flanges. Slides
are provided to. allow of chain adjustment, and the case is secured in position on
the machine by means of clips or clamps hereinafter more fully described.
In order that my invention may be more fully understood, I will now proceed to
describe same with reference to the accompanying drawings in which
Fig. 1 is a side elevation of my improved gear case, Fig. 2 being a corresponding
view with the lid or cover raised.
Fig. 3 is a plan of the gear case with the cover or lid removed and Fig. 4 is an
underside view of the said lid or cover.
Fig. 5 shows a modified form of clip.
My improved gear case consists of two parts, a lower part a and an upper part b.
The lower part a is provided with clips or clamps k, k, by means of which it is.
attached to the tube of the cycle frame and is furnished at its rear end with a
slide & working on pins m to allow of chain adjustment, said slide having a hinged
curved top piece / which is turned down over the axle of the machine when it is in.
position, or raised to allow the axle to be placed therein or removed as required.
The said part a is likewise provided with a detachable strip or plate d retained in
position by the turned over edges of the case and provided with a stop o to prevent.
it being pushed too far towards the left hand side of the case, as shown in Fig. 2,
while to remove it, it is pushed towards the right hand side of the case as shown in
dotted lines until it is free of the case at the left hand side, when it can be pulled
down and removed.
b
The upper part 6 forming the cover or lid is formed with a double flange or edge
running entirely around same (Fig. 4) the inner flange el entering within the lower
part a of the case while the outer flange e embraces the case on the outside, the two
parts being secured together by means of forked plates c, c, and screws and
nuts n, n. The top or cover 6 has a projecting part or plate p on each side of
same, furnished with flanges f, which enter grooves or recesses 3, 9', formed
in the lower part a of the case, the two semi-circular recesses r, 1, (Fig. 2).
forming, when brought together, the circular opening through which the crank.
axle passes.

page_text: In Fig. 5 a modified form of clip is shown which amounts practically to
constructing the clip and forked' plate c together. The lug t of the clip is
soldered or suitably secured to the lower part a of the gear case, the curved part t
surrounding the stays where it is secured in position by the screw s', thus firmly
attaching the said lower part a to the machine, while the cover or lid is placed
over same and secured in position by means of the forked end' c and nut n'.
The case would be furnished with a clip at each end of the machine, one on
either side.
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 new or improved gear case consisting of lower part a, cover or lid b
having double flanges e e¹, around same, projecting plates p provided with
flanges, fentering corresponding grooves 9, 9', in part a. Slides, hinged top'
piece and removable plate or strip d, substantially as described and shown for the
purposes specified..
2. In combination with the gear case such as above claimed the forked plates c
and nuts for securing the parts a and b together, the clips k, k, for fixing the
device to the frame of a velocipede, substantially as herein described and shown in
the accompanying drawings.
3. In combination with a gear case such as above claimed the modified form of
clip substantially as described and shown in Fig. 5 of the accompanying
drawings.
Dated this 5th da
•Annil 100'5
c
F. G. CASSELL
(Of Cassell & Co.).
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicant.