Improvements in and relating to Detachable Cases or Coverings for Cycle Gearing.
Year: 1895

page_text: Date of Application, 23rd Nov., 1895
Complete Specification Left, 6th Mar., 1896-Accepted, 23rd May, 1896
PROVISIONAL SPECIFICATION.
Improvements in and relating to Detachable Cases or Coverings for
Cycle Gearing.
I, DAVID ROSE of 78 Glovers Road Small Heath near Birmingham in the
County of Warwick Tin Plate Worker do hereby declare the nature of this
invention to be as follows:-
This invention consists in a new construction and arrangement of detachable
case or covering for cycle gearing and which is made of thin metal or other
suitable material for the purpose, the case is formed in two halves and the centre
portion is cut away, thus shaping out the case so as to individually enclose the
chain and other parts of the gearing of the machine.
The two halves of the case are hinged or otherwise connected to each other at
the one end, and a spring catch or other method is provided at the other end so as
to securely fasten it when closed over the gearing; there may also be a horizontal
sliding clip which assists in securing the two parts of the case.
To allow the case to be fitted in place over and on to the pedal pin, and axle
pin of rear wheel, semi-circular apertures are cut in the meeting edges upon each
half, and the rear end of the case is fitted with a self-adjusting arrangement of
aperture, so that I can regulate the same, as it frequently happens that the chain
requires to be re-adjusted when it becomes necessary to move the adjustment pin so
as to adjust the chain.
To effect this I attach two adjustment plates on each side above and below, in
which is the aperture, these slide by means of pins or such like, in horizontal slots
upon the inside of case, thus the case can be adjusted to suit requirements, and the
spindle always be entirely covered round by the case.
In order to complete the boxing in of the chain the case has grooves running
around the interior edges of the cut out portion, within which slide strips of
leather, celluloid, or other suitable material, these strips are provided at their ends
with finger pieces to draw the same along the grooves, the curved part has a
similar strip fitting in, which completely boxes in the gearing, at the meeting parts
of the strips may be suitable clips, if required, to attach and fix same.
Instead of the usual means of attachment of the case to the machine, I attach to
each part of the rear end of the case, two clips into which slide an eye piece which
can be readily passed on to the adjustment pin of the machine, the forward part of
the case is connected to the usual upright bar by any suitable clip arrangement.
By this method 1 dispense with the usual necessary clips for attachment to the
horizontal bar.
To prevent the case being opened too far, whereby the hinge might be strained,
I provide sliding distance pieces which permit the two halves to be opened a
certain width.
To obviate any possibility of the parts rattling, I propose if required to fit up
the interior of the case with cork or other material, and also the aperture that fits
around the base of the gearing may be padded on the edge with india rubber or
other material thus rendering it noiseless, and dust proof.
A much lighter construction of case is thus produced than has bee possible and

page_text: at very much less cost, less machinery being needed for the purpose of turning
them out.
Dated this 22nd day of November 1895
EDWD. J. PAYNE & SON,
104, Colmore Row, Birmingham, Patent Agents for the Applicant.
Improvements in and relating to Detachable Cases or Coverings for
Cycle Gearing.
I, DAVID ROSE of 78, Glovers Road Small Heath near Birmingham in the
County of Warwick Tin Plate Worker, do hereby declare the nature of this
invention and in what manner the saine is to be performed, to be particularly
described and ascertained in and by the following statement, reference being had
to the drawings accompanying this Specification and to the figs. and letters shewn
thereon :-
My invention consists firstly in a new construction & arrangement of detachable
case or covering for cycle gearing & which case is made of thin metal or other
suitable material for the purpose & is formed in two halves & the centre portion
cut away thus shaping the case so as to individually enclose the two lengths of
the continuous chain as also the chain wheels of the machine.
Figs. 1 and 1 represent in side and part side elevation my improved detachable
gear case. Fig. 2. represents a detail view of the same in part longitudinal section.
Fig. 3. represents a vertical cross section on the line A. B.
.
Fig. 4. is a side elevation shewn open.
Fig. 5. represents in plan one half of the case.
Figs. 6. 7 and 8 shew parts for boxing in the gearing in connection with my
improvements.
Fig. 9. represents a longitudinal section of one half.
Fig. 10. a top view.
Fig. 11. is a part elevation shewing the case when attached to the machine.
Fig. 12 represents in side elevation my improved detachable case shewing a
modification of the arrangement round centre opening for boxing in the gearing.
Fig. 13 shews the arrangement detached. Figs. 14 and 15. respectively are cross
sections of same upon the lines C. D. E. F.
Figs. 16. 17. 18 and 19 are detail views of the slides used in connection with my
improvements for strengthening and other purposes.
Fig. 20 represents an alternative method of the covering strips for filling in the
edges of the centre opening fastened at the ends instead of the si les.
Figs. 21 and 22 are details of my improved sliding adjustment plates in connection
with case.
Fig. 23. represents a side elevation with the covering in arrangement in position
for attachment.
Fig. 24 shews in plan one half of Fig. 23.
Fig. 25 is a cross section of the case alone on line C. H.
Figs. 26 and 27. shew front and side views of a suitable clip for attaching the
case to the machine.
Similar letters of reference indicate similar parts on the several figs.
The two halves A. A. of the detachable case are hinged (or otherwise connected)
to each other at the one end B. and a thumb screw or screw and fly nut or spring
catch C. or other method is provided at the other end so as to securely fasten it
when closed over the gearing and in order to give rigidity to the parts and keep
the same tight there may be a longitudinally grooved slide D. and D' fitting onto

page_text: or into ribs or grooves D2 at the meeting edges of the two halves of the case.
To allow the case to be fitted in position over and onto the pedal crank axle pin
it has semi-circular apertures E. E cut in the meeting edges on the one side upon
each half fitting over same, the other side being suitably cut out on the meeting
edges and having a right angled projecting rim or flange E³ around same to
closely fit over and box in the pedal gearing and the rear end of the case has
preferably oval apertures in the meeting edges of each half F. F¹ and as it
frequently happens that the chain requires to be readjusted it becomes necessary to
move the adjustment pin and rear wheel further back in these apertures.
By the present method hitherto adopted the slides or plates have to be moved
when required by pressing finger pieces attached to same, by my improvements two
self acting adjustment plates F2 F3 having semi-circular apertures therein are
attached upon each side of the case above and below the meeting edges and slide
in horizontal or other slots G. therein by means of pins or sliding pieces H
connected to the sliding plates and are clenched upon the inside Fig. 2 so that it is
impossible for them to get out of place, by these means the rear wheel axle and
cog wheel are always entirely covered round by the sliding adjustment plates F' F³
which as stated being self acting when the rear wheel is moved further back the
adjustment plates are drawn with it as far as necessary as they slide over the oval
apertures in the case and effectually prevent dust dirt or wet etc. from entering to
the gearing a great advantage in this arrangement is that obviously no side pro-
ecting finger pieces are required for manipulating the same (which are very liable
to catch in the spokes) my improved action being automatic.
In order to complete the entire boxing in of the chain-gear one of the
methods I employ is to form the case with grooves I running around the edges
where the centre portion is cut out as seen in plan Fig. 5. the said grooves are
formed between two narrow metal projections or rims J. integral with the case
within which slide and closely fit strips of leather, celluloid, metal or other suitable
material K. these strips are provided at their ends with finger pieces L. to draw
the same along the grooves in the direction indicated by the arrows, the bow M of
the opening is filled in with a metallic or other strip or clip N. which secures the
ends of the strips K. the other ends may be fastened by a screw and fly nut O. thus
the gearing is fully covered in. Or instead of the strips of leather, celluloid, or
metal being drawn along the grooves above described I form upon the edges of
the cut out centre longitudinal channels or slots P. as shewn in plan Fig. 24. and
cross section Fig. 25. into these channels or slots are fitted narrow strips of
metal Q of the same width as the case laterally and outline of the cut out centre,
these strips are hinged in the bowed part Q and are divided in their length the
edges of the strips are turned over at right angles to form a rim upon each side
which shuts closely into and are received in the slots P. as shewn in Figs. 12
and 23. To attach the gear case it is placed over the pedal crank axle and is then
closed down over the rear wheel axle pin ends and secured by screw C. spring
catch or other means and is attached to the machine by the usual or other
suitable clip arrangement the sliding piece D. is passed over the horizontal
side ribs or grooves D' one on each side of the meeting edges as in Fig. 1. and the
slide D is similarly passed into position at the other end, the leather, celluloid,
metal, or other strips K. are then drawn into place in the grooves I. and secured
as described and thus the attachment is complete.
By the second method the case having been attached to the machine and the
slides D. D' fitted in position the side rims of the hinged metal strips forming the
one part are placed in the larger bow M. and are closed tightly into the channels
or slots P. and the corresponding strip, in the sides, or instead of hinging the
placed in position in like manner and
connected by the screw and fly nut
metallic strips Q at each end Q' they may be made in two lengths the one end
overlapping the other as in Fig. 20 and connected by a screw and fly nut at O'
passing through same or other means.
Instead of the usual means of attachment to the machine I may connect to each

page_text: part of the rear end of the gear case two clips into which slide an eye piece
which can be readily passed over an adjustment pin on the machine by this method
I dispense with the usual clip attachment to the horizontal bar, the forward part of
the gear case may be connected to the usual upright bar by any suitable clip
arrangement as ordinarily used such as shewn at Figs. 26 & 27. or the clip may be
attached to the case so as to fit onto the other end of the horizontal bar.
By the above described arrangements the gearing is securely boxed in and
protected and in either of the methods where metallic covering strips are used the
gear case is rendered not only dust and dirt proof but also oil proof and the upper
side of the cut out opening being sloping towards the centre a channel is formed
for the oil to drain and if necessary an aperture and screw plug may be provided
to run it off. In order to prevent the two halves of the case from being opened
too far whereby the parts might be forced and the hinge strained I provide
distance pieces R. within the case Fig. 4. on each side which work in suitable
attachments and allow of their being opened a certain distance only.
To obviate any possibility of the parts rattling I propose if required to line the
interior of the same also the parts of junction and on the flange piece E' that
fits around the gearing, with cork, india rubber or other material which may take
the form of pads or cushions on the edges thus rendering the case absolutely
noiseless and assisting to keep it dust, dirt, wet and oil proof.
A feature of my improvements consists in the fact that the gear case can be
expeditiously attached and detached without the use of spanners or tools, as I
propose to apply adjustment screws and fly nuts or some such convenient means
which can be readily manipulated.
By the herein described or other similar acting means many advantages are
gained, a much lighter construction is provided than hitherto used and at a greatly
reduced cost, there being fewer parts less machinery and labour is required to turn
them out, moreover in other forms of gear cases detachable or fixed by reason of
the nature of their construction it has not been possible to cut away a large centre
opening, by my method I obtain an oil proof detachable case with a cut out centre
larger at the one end than the other which not only gives a better appearance but
obviously is of importance in lessening the weight and also allowing for windage
when travelling thus affording increased speed.
In carrying out my improvements I wish it to be understood that I do not limit
myself to the precise details or the arrangements herein more fully described as
I may modify the same to suit different requirements that may be necessary for
the various types of cycles, without departing from the principle of my invention.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, 1 declare that what
I claim is,
Firstly. In detachable cases or coverings for cycle gearing the formation and
arrangement of same in two halves hinged at the one end and fastened at the other
by thumb sciew or screw and fly nut or other means, said gear case having a cut out
centre with grooves formed in longitudinal rims or flange pieces integral with the
case around the edges of the cut out centre within which grooves slide strips of
leather, celluloid metal or other material in combination with strips or clips for
connecting same in the bowed ends of case all for the purpose set forth described
and illustrated.
Secondly. In detachable gear cases the formation and arrangement of same
having a cut out centre with longitudinal grooves or channels upon the edges
thereof and integral with same within which close in and tightly fit metallic strips
either hinged at their bowed ends or connected by screws and fly nuts or other
means and which may or may not (in the latter case) be secured in the sides by
screws and fly nuts all for the purpose set forth described and illustrated.
Thirdly. A detachable case formed with semi-circular and oval apertures upon
the closing edges and the application & use of self adjusting plates through

page_text: which the rear wheel axle passes, said plates sliding automatically within horizontal
or other slots in the rear end of the case all in combination and operating in manner
and for the purpose set forth described and illustrated.
Fourthly. I claim alone and in combination the general formation and
arrangement of parts constituting my improvements in and relating to detachable
gear cases and the method or methods of applying the same for the purpose set
forth and described.
Dated this 5th day of March 1896.
EDWD. J. PAYNE & SON,
104, Colmore Row, Birmingham, Patent Agents for the Applicant.