Improvements in and relating to Cycle Gear Cases
Year: 1897

page_text: Improvements in and relating to Cycle Gear Cases,
I, CHARLES GOULD, of No. 11-20, Court Arthur Street, Small Heath, Birming-
ham, Tin-plate Worker, do hereby declare the nature of this invention to be as
follows;-
This invention consists in forming the gear case in such a manner that it can
be readily attached & detached from the machine.
The case is constructed according to one method of my invention by attaching
the front and back to the edges or moulding at the base and at each end by either
soldering same or by folding the edges over so as to form a perfect join, this fold-
ing over of the edges being known in the trade as "knocking up."
A certain portion of the moulding upon the upper edge is made detachable to
adjustably fit within grooves or channels on the edges of the horizontal upper
part of case, said grooves or channels are formed by "back lapping
the edges.
"
The one end of case that encloses the upper part of the rear chain wheel is suit-
ably cut out and a loose section formed of the cut out piece is hinged or otherwise
suitably attached which boxes in this cut out part when closed and is fastened by
a slide on each side which forms a horizontal clip fitting over the back fork end
the rear wheel hub is enclosed by a suitably cut out sliding plate either top or
bottom on each side of the end portion. Vertical slots are upon the sides of the
case to allow for fitting up over the front gear spindle and bracket and stay
suitable slides covering in these slots.
To attach the case the upper adjustable moulding and the vertical slides having
been removed and the adjustable end opened the case is fitted in position by
passing it up vertically over the gearing from below same. The end is then closed
down two side wing pieces fitting into grooves in a skirting in the meeting parts
to receive same, the vertical side slots are covered in by the slides which fit down
to and enclose the spindle bottom bracket and compression stay. The base of slide
in. front face of case is curved so as to complete the disc fitting round spindle;
the edges of said slides are backlapped and allow of same fitting in flush with the
case the upper moulding is then placed in the grooves or channels in the edges
of the sides the one end being passed beneath the meeting part of the loose end
and the other end secured by a small screw spring or catch or other device.
The case is attached to the seat pillar tube or the diagonal member of the
frame by any suitable clip arrangement.
A modification of the above arrangement consists in constructing the upper part
of the case so that it is detachable by dividing the sides horizontally from the
one end the lower part and the other end being formed in one that is to say the
lower part integral with the one end.
The lower part of case when fitted on the machine by passing it up over the
gearing in manner before described, the upper part fits into grooves or channels
in the edges of same said grooves being formed by back lapping horizontally

page_text: and also the vertical edges of the end piece; so that the top part can slide into
place.
The parts are firmly secured at the end by a screw or other device, the mould-
ing is attached to the side parts by knocking up or soldering. In this latter
arrangement of gear case the vertical slots upon the sides will not be needed as
the meeting parts of the case are suitably shaped to fit over the spindle and rear
hub and compression stay. By either of these arrangements the gearing can be
readily examined by removing the upper moulding according to the first described
method & in the latter method by removing the upper part of case without detach-
ing the gear case bodily from the machine.
Dated this 19th day of October 1807
EDWD. J. PAYNE & SON,
Warwick Chambers, 104, Colmore Row, Birmingham.
Patent Agents for the Applicant.
I, CHARLES GOULD, of 62, Herbert Road, formerly of No. 11-20, Court Arthur
Street, Small Heath, Birmingham, Tin-plate Worker, do hereby declare the nature
of this invention and in what manner the same is to be performed to be particu-
larly described and ascertained in and by the following statement, reference
being had to the drawings forming a part of this specification, and to the figures
and letters shewn thereon;-
Figure 1 represents in elevation a gear case constructed according to one of the
methods of my invention.
Figure 2 represents the upper moulding of same disconnected. Figure 3, an
elevation of the gear case closed up intact. Figure 4 a vertical cross sectional
view drawn to a larger scale.
My present invention consists in forming a gear case in such manner by the
means and in the several ways hereinafter described so that the said gear case
can be readily attached or detached from the machine or the gear examined
without the necessity of wholly removing the case from the machine.
Proceeding to describe one method I employ I carry the same into effect by
attaching the front and back or two sides, A, to the edges or moulding B, at the
base and at the one end, the other end being hinged as presently referred to, the
said sides are attached to the moulding by soldering or otherwise or by folding
the moulded edges over to form a perfect join, this process being known in the
trade as knocking up." A certain portion of the moulding, B, upon the upper
edge is made detachable as shewn to adjustably fit within longitudinal grooves
or channels, C, Figure 4, on the edges of the case, these grooves or channels are
or may be formed by "back lapping" the edges.
6
The end, D, of the case that encloses the rear chain wheel is suitably cut out
either diagonally and vertically or vertically as may be required, the end, D, is
hinged at D, or otherwise conveniently attached to the case, vertical apertures
are formed in the sides of the case to allow for fitting up over the gearing suitable
alides, E, covering in the said apertures. The rear wheel hub may be enclosed
by the ordinary or other suitable method of sliding plates.
The case is attached by removing the moulding B from the top, the usual slides
having been removed the hinged end D is opened and the case fixed in position
by passing it up vertically over the gearing from below, the end D having wing
pieces thereon. Dis then closed and fastened the slides as at E are placed in posi-

page_text: tion the lower part of the slide E in front side of case may be formed as shewn
so as to complete the disc J, the moulding B is then placed in the grooves or
channels C, of the sides the end 13 of the moulding B is passed under the lip K,
on the hinged end D) the other end of moulding B is secured by a screw L, spring
catch or other device. I will now refer to my second method of construction.
Figure 5 represents the lower half of a case. Figure 6 a plan of same.
Figure 7, the upper half. Figure 8, a vertical section of same. Figure 9, a plan
of same. Figure 10 shews the case put together. Figure 11, a vertical section
to a larger scale.
According to this arrangement the lower half B of the case is constructed by
dividing the sides horizontally as far as the rear chain wheel the lower half B
is formed integral with the end B₁ that encloses the rear chain wheel. It will be
seen that the end B¹ is cut down from the top diagonally the upper part of the case
Figure 7 corresponding thereto by being cut to the same angle so as to make a
perfect join when the two halves of the case are fitted together.
The meeting edges of the ends of the two halves may however be cut vertically
or otherwise.
The lower half B of the case is fitted on the machine by passing it up vertically
and drawing it along horizontally for the end B' to cover in the back chain wheel,
and the upper half A is fitted in position by means of the tongues C¹ C₁, which
are received in the channels or grooves C, C.
The meeting parts at the end B' are or may be grooved or winged B² so that
the upper part can be readily fitted, the lip D is received by and engages the
moulding at D of the end B₁, a screw E or other device securing the other end.
A modification of the above arrangement is illustrated in Figure 12 in elevation.
Figures 13 and 14 shew the upper and lower halves apart.
According to this arrangement the upper half A of the case is formed integral
with the end A¹ which encloses the driving chain wheel whilst the lower half B
is formed integral with the end B¹ which encloses the rear chain wheel; in other
respects the construction and method of attaching and putting together this case
is similar to my second arrangement, shewn in Figures 5 to 11. The meeting
edges of the respective ends may be of the form shewn or cut to any other suit-
able angle at (a) (b). By this latter method of making the end A¹ integrally_a
part of the half A, it enables the case to be readily fitted together the parts A, B,
easily sliding into one another by means of the horizontal tongues and
grooves C, C₁.
The moulding of the bottom half may be perforated with one or more apertures
as occasion may require to make the case non-oil containing. The method of
attaching the case in any of the forms, to the machine will be by the ordinary or
other suitable clips or fastenings.
I wish it to be understood that I may sometimes vary the above described_several
methods to suit requirements without however departing from the main features
of my invention but
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what I
claim is:-
Firstly In gear cases for cycles the arrangement and construction consisting
of the several parts composing my improved gear case viz. the particular forma-
tion of the sides A, A, the detachable moulding B, fitting into grooves or chan-
nels C, the construction of hinged end D, the side apertures and slides E adapted
to allow the case to be passed up vertically over the gearing all in combination
substantially as and for the purpose described and shewn in Figures 1 to 4 of the
accompanying drawings.
Secondly In gear cases for cycles the construction and formation of the
parts A, B, fitting together as described, the end B31 being formed integral with
the part B, the other part A being formed to correspond as shewn the points of

page_text: junction at the rear chain wheel end being cut diagonally or otherwise also the
method of attachment D D all in combination with the other parts composing
a gear case substantially as and for the purpose described and illustrated in
Figures 5 to 11 of the accompanying drawings.
Thirdly In gear cases for cycles the arrangement of the parts consisting of the
formation of the parts A, B, of the case having the ende A, B, integral there-
with and the meeting edges of said ends formed as shewn or to other angles and
adapted to engage, the one part of the case with the other in manner and for the
purpose described and shewn in Figures 12 to 14 of the accompanying drawings.
Fourthly The general construction arrangement and combination of parts com-
posing my improved gear cases all substantially as and for the purposes herein
described and illustrated in the drawings.
1000
EDWD. J. PAYNE & SON,
Warwick Chambers, 104, Colmore Row, Birmingham,
Patent Agents for the Applicant.