Year: 1896

page_text: Date of Appl.cation, 17th Mar., 1896
Complete Specification Left, 17th Dec., 1896-Accepted, 27th Feb., 1897
I, ROBERT CHAPLIN of 27, Durand Gardens, Clapham Road, S. W. Draughtsman,
do hereby declare the nature of this invention to be as follows:-
This invention relates to gear cases for cycles and has for its object to provide
an arrangement which can be easily fitted in place or detached, and which will
serve to effectually protect the gearing.
In carrying out my invention, according to one arrangement I employ a light
metal frame of channelled form and furnished with a rim or lip around each edge
forming a groove. This frame forms the central portion of the gear case, a large
hole or space being left at the middle, the chain running in channels at top and
bottom. One end of this frame is split so that it can be passed over the stay or
tube of the cycle, and it is also furnished with clips or other suitable device for
securing it to the frame.
The body of the gear case is made from metal celluloid, or other suitable material,
and is formed in two main parts, an upper and a lower one. The edges of each
portion are adapted to fit in the grooves of the central frame so that when the parts
are placed together a complete case is formed adapted to contain the gearing.
Small catches are employed at each end consisting of a hinge and slotted plate
and hook or made in any other suitable manner which can be used for connecting
the ends together securely.
The edges of one part overlap those of the other so as to form a proper joint.
According to a modified arrangement the separate internal frame is dispensed
with, the large hole or opening however, being retained, this opening extending
through the greater part of the length of the case.
One end of this case is also split to permit of its being fitted in position over
the rear stay of the frame and caps or end pieces are employed to complete the
case. These end pieces are of semi-circular form and are hinged at the top to the
body of the case so that they can be raised out of the way when desired. A catch
of similar form to that described is employed to secure these end pieces in position,
the edges overlapping as before.
A hinge suitable for these pieces consists of a plate on each part with tubular
ends connected together by a double wire. This allows of slight play in closing
or opening the ends.
These gear cases can be easily detached or fitted in position and are light and
also dust proof and ample allowance is made for chain adjustment.
Dated this 17th day of March 1896.
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.

page_text: I, ROBERT CHAPLIN of 27, Durand Gardens, Clapham Road, S. W. Draughtsman,
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, and has for its object to provide
an arrangement which can be easily fitted in place or detached, and which will
serve to effectually protect the gearing.
In carrying out my invention, according to one arrangement I employ a light
metal frame of channelled form and provided with a double edge forming a groove.
The frame forms a portion of the gear case, a large hole or space being left at
the middle, the chain running in channels at top and bottom. One end of this
frame is split so that it can be passed over the stay or tube of the cycle, and it is
also furnished with clips or other suitable device for securing it to the frame.
The body of the gear case is made from metal celluloid, or other suitable
material, and is formed in two main parts, an upper and a lower one. The edges
of each portion are adapted to fit in the grooves of the central frame so that when
the parts are placed together a complete case is formed adapted to contain the
gearing. Small catches are employed at each end consisting of a hinge and
slotted plate and hook or made in any other suitable manner which can be used for
connecting the ends together securely.
The edges of one part overlap those of the other so as to form a proper
joint.
According to a modified arrangement the separate internal frame is dispensed
with, the large hole or opening however, being retained, this opening extending
through the greater part of the length of the case.
One end of this case is also split to permit it to pass over the tube of the frame
and caps or end pieces are employed to complete the case. These end pieces are
of semi-circular form and are hinged at the top to the body of the case so that
they can be raised out of the way when desired. A catch of similar form to that
described is employed to secure these end pieces in position, the edges overlapping
' as before.
A hinge suitable for these pieces consists of a plate on each part with tubular
ends connected together in closing or opening the ends.
These gear cases can be easily detached or fitted in position and are light and
also dust proof and ample allowance is made for. chain adjustment.
In order that the invention may be more clearly understood, reference is had to
the accompanying sheet of drawings in which
Fig. 1 is a side elevation of a gear case constructed according to my invention,
Fig. 2 is a cross section and Fig. 3 an end view of the same, and Fig. 4 shows a
modified arrangement in side view.
Referring to Figs. 1, 2 and 3 A is the central metal frame of channelled form.
The frame is doubled and is slightly open at the edges a so as to form a groove at
cach side extending completely around it.
The frame is cut at a¹ at one end so that it can open allowing it to pass over the
stay of the cycle. The body of the case is formed in two parts B and B', the parts
being connected together along a central line.
When the parts are fitted together, the edges of B and B¹ fit in the grooves a
of the central frame as shown clearly in Fig. 2. The metal straps 6 placed at each
end and fixed to the upper side and overlap the lower so as to form a better con-
nection. The top and bottom parts are connected together by the fastening C

page_text: consisting of a small plate hinged to the top part and a screwed pin on the lower
passing through the perforation in the plate with a small nut holding the plate
down. Any other simple form of clip may be employed for this purpose.
The rear end of the gear case is provided with the sliding plate D carried by
the guides d and perforated to permit the axle of the rear wheel to pass through."
The plate a serving to attach the case to the tube of the cycle is rivetted
to one side of the frame and screwed to the other, allowing the frame to be
sprung open at that end to admit the tube.
Referring to Fig. 4 the body of the case E is formed with the central hole e
being fixed to the central frame. In this case the detachable frame A is dispensed
with and instead of dividing the case along the centre it is provided with the
separate end pieces E' and E' of approximately semicircular shape hinged at el
to the body of the case and secured by means of the fastenings e² at the top,
these fastenings being similar to those employed in the arrangements above
described, the overlapping straps or plates serving the same purpose as
those shown in Fig. 1. The case is split or open at e to allow it to spring
over the tube.
The guide d' for the sliding plate D is made in two parts one fitted to the end
piece E and the other to the body of the case.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manuer the same is to be performed I declare that what I
claim is :-
(1.) A new or improved gear case for cycles, the combination with a central
split metal frame of channelled form of the body of the case made in two parts
fitting together along a central line and secured by suitable fasteners, substantially
as and for the purposes specified.
(2.) In a gear case for cycles, the combination with a central split metal frame
of channelled form having grooves on each side of the body of the case made in
two parts, the edges of which fit in the said grooves connected together at their
ends by suitable fastenings, substantially as described and shown and for the
purposes specified.
(3.) In an improved gear case the combination with a case cut at one end and
formed with a large central opening, of end pieces of semicircular form hinged to
the body of the gear case and secured by means of fastenings or clips substantially
as described and shown and for the purposes specified.
Dated this 17th day of December 1896.
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.