Improvements in or relating to Cases for Covering the Driving Gear of Velocipedes and the like.
Year: 1893

page_text: Date of Application, 4th Dec., 1893
Complete Specification Left, 4:h Sept., 1894-Accepted, 20th Oct., 1894
PROVISIONAL SPECIFICATION.
Improvements in or relating to Cases for Covering the Driving Gear
of Velocipedes and the like.
We, BENJAMIN BARTON, Ironmonger and WALTER HARRY BARTON, Clerk,
both of No. 3 Saint Michael's Terrace, Priory Street, and WILLIAM STEVENSON
LOUDON of Rosslyn Villa Warwick Road, Merchant, all in the City of Coventry,
in the County of Warwick, do hereby declare the nature of this invention to be as
follows:-
Our invention relates to cases for covering the driving gear of velocipedes
especially those velocipedes in which the propelling power is transmitted through
an endless chain running on a driving and à driven toothed or chain" wheels, and
has for its object the production of a case which shall exclude dirt and wet from
the gear and which shall be readily attachable to and detachable from the
velocipede.
"
two runs
We will describe our invention as applied to a velocipede of the type commonly
known as the "rear driving safety bicycle and having the meinber of the
frame known as the "back stay" on the chain side, arranged so that starting
from the outside the outer face of the driven chain wheel, it crosses between the
"of the chain and terminates inside the inner face of the driving
chain wheel; but our invention may be adapted to other types of velocipedes and
other construction of frames. To attain our object, we construct the case of
tinned steel or other suitable material and form it in four principal parts, which
when assembled in position enclose the chain and the two wheels. The first two
parts run round the outside of the chain and wheels and the second two parts
run round between the "runs" of the chain and between the wheels, so that each
of the two " runs "of the chain is enclosed in a separate chamber. The second
two parts are attached to each other and to the back stay, which passes between
them, by any suitable means. We tongue the edges of the upper part into the
lower part and further secure them to each other by one or more screws passing
through a clearance hole or holes in one, into a suitably tapped hole or holes in the
other; a clip of any convenient form is fitted near each end of the back stay to
hold the two parts to the said back stay, one clip being on the face and the other
on the back of the case; and these two clips may also hold or assist in holding the
said second two parts together. The divisions between the first two parts an
between the second two parts are preferably arranged in a plane passing through
the axes of the two chain wheels. The ends of the back and front of the second
two parts are straight and at right angles to the dividing line or of other con-
venient form. The first two parts of the case have the inner edges of their backs
and fronts adapted to engage with the outer edges of the backs and fronts of the
second two parts when the first two parts are approached to the second two parts,
one from above and the other from below in the vertical plane of the second two
parts and in directions perpendicular to the before mentioned plane through the

page_text: axis of the two wheels. And the said edges are respectively tongued and grooved
for the purpose, or the upper and lower edges may be so tongued and grooved and
the end edges provided respectively with wires or staples and tubes or eyes, or
otherwise. The first two parts encompass the second two parts and where the edges
of the first two parts meet each other, beyond the ends of the second two parts, the
upper part is preferably tongued into the lower part. And the first two parts are
attached or fastened to one another (and so, indirectly to the second two parts and
to the velocipede) by any suitable means, or by a screw at each end of the case
passing through a clearance hole in the lower first part into a screw threaded hole
in the tongue of the upper first part; or a hook on one may engage with an eye or
the like on the other; or a hasp on one may engage with a spring knob on the
other; or a loop on one may engage with a catch on the other, which catch may
also be rotatable on its axis so that it may be turned a quarter circle and act as a
button or bar. Or any other or additional suitable attachment or fastening may be
used which shall not be liable to accidental disarrangement.
To attach the case to the machine, the second two parts are fastened to each other
and to the back stay the first two. parts are then attached to the second two parts
and to each other. The case is detached by reversing the above operations.
Instead of constructing the case of four principal parts, we may construct it of
three, by forming the first two parts in one piece. This one piece constitutes a ring
and we form it with a suitable division so that the ring may be opened and the
piece passed on to the back stay; the division may be closed and secured in any
convenient manner.
Any convenient means may be provided for adjusting and lubricating the
gearing.
Dated this 2nd day of December 1802
W. B. MAXFIELD,
Applicants Agent.
Improvements in or relating to Cases for Covering the Driving Gear
of Velocipedes and the like.
We, BENJAMIN BARTON, Ironmonger and WALTER HARRY BARTON, Clerk
of No. 3 Saint Michael's Terrace, Priory Street, and WILLIAM STEVENSON
LOUDON of Rosslyn Villa, Warwick Road, Merchant, all in the City of Coventry
in the County of Warwick 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:-
Our invention relates to cases for covering the driving gear of velocipedes,
especially those velocipedes in which the propelling power is transmitted through
an endless chain running on a driving and a driven toothed or chain" wheels, and
has for its object the production of a case which shall exclude dirt and wet from
the gear and which shall be readily attachable to and detachable from the
velocipede.
We will describe our invention as applied to a velocipede of the type commonly
known as the "rear driving safety bicycle" and having the member of the frame
known as the "back stay on the chain side, arranged so that starting from outside
the outer face of the driven chain wheel it crosses between the two runs of the chain
and terminates inside the inner face of the driving chain wheel, and in order that
our said invention may be well understood we append drawings which show the
general form and arrangement of the parts when applied, but our invention may be
adapted to other types of velocipedes and other constructions of frames, and modifi-
cations may be made without departing from the nature of our invention.

page_text: Similar numerals refer to similar parts throughout the drawings.
Figure I is a front view in elevation of a case constructed according to our inven-
tion and fitted to a rear driving safety bicycle.
Figure is a back view in elevation of the same when removed from the
velocipede and the principal parts separated from one another.
Figure III is a front view in elevation of the parts III and IV made in one
piece. Figure IV is a plan of the same.
Figure Vis an end view of the same to an enlarged scale.
Figure VI is a vertical section on the line - in Figure to an enlarged scale.
Figure VII is a broken front view in elevation of a portion of the said case
showing an alternative method of attaching the outer parts to the inner parts
or part.
To attain our object we construct the case of tinned steel or other suitable
material and form it in four principal parts (I, II, III and IV) each of which
consists mainly of two suitably shaped sheets joined side by side at a suitable
distance apart by soldering or other convenient means to a channel shaped strip in
the well known inanner, and which parts when assembled in position, enclose the
chain 2 and the two wheels 3 and 4 (indicated by dotted lines in Figure 1). The
first two parts 1 and I run round the outside of the chain and wheels and the
second two parts III and IV run round between the " ruus of the chain and
between the wheels so that each of the two runs of the chain is enclosed in a
separate chamber.
The second two parts III and IV are attached to each other
and to the back stay 13 which passes between them, by any suitable means;
according to the method illustrated in Figures I and II we tongue the edges 6 of
the upper part III into the lower part IV and additional strips 5 enclosing the
upper edge of the lower part IV may be added by soldering or other suitable
means where convenient as shown, and we further secure them to each other by
screws 8 passing through clearance holes 9 into suitable tapped holes 10.
A clip
of any convenient form is fitted near each end of the back stay 13 to hold the
parts III, IV to the said back stay, one clip 11 being on the face and the other, 12
on the back of the case; the clips 11, 12 shown consist partly of shaped
bars 39, 40 made of gunmetal or other suitable material and of suitable dimensions
fixed on to the parts III and IV by screws 43 passing into tapped holes in the
blocks 44, 45 also of gunmetal or other suitable material and of suitable dimensions
soldered or otherwise suitably secured to the parts III and IV, the blocks 44
being on the front of the case towards the rear end, and the blocks 45 being on the
back of the case toward the forward end. Recesses 46, 47 are formed in the
parts III and IV to receive the back stay 13 and these with the bars 39, 40
respectively complete the clips 11, 12; which clips also assist in holding the two
parts III and IV together, as the bars 39 and 40 bridge the divisions between
them. The divisions between the first two parts I and II and between the second
two parts III and IV are preferably arranged in or approximately in a plane
passing through the axes of the two chain wheels, as shown. The ends of the
backs (14 and 15) and fronts (18 and 19) of the parts III and IV respectively are
straight and at right angles to the dividing line or of other convenient form so that
the ends of the two parts III and IV taken as a whole, are not effectively concave,
but on the other hand they may conveniently be somewhat convex so as to give
the parts I and II a "lead" when fitting them into position. The parts I and II
of the case have their respective upper and lower inner edges 22 and their end
inner edges 23 of their backs 16 and 17 and fronts 20 and 21 respectively, adapted
to engage with the respective upper and lower outer edges 24 and the end outer
edges 25 of the backs 14 and 15 and fronts 18 and 19 of the parts III and IV.
when the parts I and II are approached to the parts III and IV one (1) from
above and the other (II) from below in or approximately in the vertical plane of
the parts III and IV, and in directions perpendicular or approximately perpen-
dicular to the before mentioned plane through the axes of the two wheels 3 and 4.

page_text: And the said edges 22, 23; and 24, 25, are respectively tongued and grooved
(preferably by the addition of strips 48, 50) for the purpose, or the upper and
lower edges 22, 24 respectively may be so tongued and grooved and the end
edges 23, 25 be provided respectively with wires or staples 26 and tubes or eyes 27
as shown in Figure VII or otherwise; the edges 22, 24 may be similarly provided
with alternate tubes or eyes 27 adapted to receive a withdrawable wire or staple 26
as shown in the same figure. The parts I and II encompass the parts III and IV
and where the edges 29, 30 of the respective parts I and II meet each other, beyond
the ends of the parts III and IV, the upper part is preferably tongued into the
lower part II, and an additional strip 49, enclosing the upper edge of the lower
part II may he added where convenient, as shown. And the parts I and II are
attached or fastened to one another (and so indirectly to the parts III and IV and
to the velocipede) by any suitable means such as a screw 31 at each end of the case
passing through a clearance hole in the part II into a screw threaded hole in the
tongue of the part I; or a hook on one may engage with an eye or the like on the
other, or a hasp on one may engage with a spring knob on the other; or a loop on
one may engage with a catch on the other which catch may be rotatable on its axis
so that it may be turned a quarter circle and act as a button or bar. Or any other
or additional suitable attachment or fastening may be used which shall not be liable
to accidental disengagement.
To attach the case to the machine, the parts III and IV are fastened to each
other by the tongued and grooved edges 6 and 7 respectively and the screws 8 and
to the back stay 13 by the clips 11 and 12; the parts I and II are then approached
to the parts III and IV perpendicularly to the plane through the axes of the
wheels 3 and 4 as hereinbefore described and are attached to the said parts III
and IV by the tongues, grooves, or eyed and stapled edges 22, 24 and 23, 25
respectively, and to each other by the tongued and grooved edges 29 and 30
respectively and the screws or other fastenings. And in order to facilitate the
engagement of the tongued edges 22 of the parts I and II with the grooved edges 24
of the parts III and IV respectively or for the sake of appearance or other reasons
the said edges may be caused to depart from straight lines as shown with respect
to the edges 24 by dotted lines in Figure III.
The case may be detached by reversing the above operations.
Instead of constructing the case of four principal parts we may construct it of
three, by forming the parts III and IV in one piece-as shown in Figures III, IV
and V. This one piece constitutes a ring and we form it with a suitable division 37
so that the ring may be opened and the piece passed on to the back stay 13; the
division may be closed and secured by any suitable means, such as that illustrated
wherein a screw 38 passes through a clearance hole near one end of the ring into a
tapped hole in an overlapping lug 51 secured to the other end of the ring.
Any convenient means may be provided for adjusting and lubricating the gearing.
Suitable slides are provided to allow for the adjustment of the chain and apertures
are cut to allow of the revolving parts of the machine moving freely. An aperture
or apertures is or are preferably made in the bottom of the case for the escape of
waste oil and other refuse matter. As the material used for making the case is
usually too thin to allow of a sound screw thread being formed in a hole made
therethrough, it is advisable to thicken the material at such points by soldering or
otherwise securing thereto an additional piece of metal or other suitable material
of sufficient thickness and this additional piece may conveniently take the form of
a suitably tapped nut or washer. Where a joint is made by tonguing one part into
another, we prefer (in order to make the joint smooth on the exterior) to make the
tongue from a separate strip and solder or otherwise suitably secure it into the part,
and where the joint occurs at a rounded end we prefer to secure the strip at a slight
angle so that the bent part of the tongue inclines slightly inward (as shown at the
ends of the part in Figure 11) being thus capable of more ready introduction
into its position in the joint.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that we are
aware that cases for covering the driving gear of velocipedes and the like have
already been constructed so as to enclose the runs of the chain in separate
chambers, and with a separate central portion adapted to be fixed to the back stay
and carry the remainder of the case and we do not broadly claim such construction
as our invention, and further we wish it to be understood that we are aware of the
Specification of Henry Bate No. 1384 of 1893 and we do not claim anything
described and claimed therein, but what we claim is :-
1. A case for covering the driving gear of velocipedes and the like consisting of
four principal parts two of which are adapted to be attached to one another and to
the back stay or other suitable part of the velocipede between the two runs of the
chain and between the two chains wheels, such two parts being further adapted to
engage with and carry the other two parts which run round the outside of the said
chain and chain wheels, and which are divided, beyond the ends of the first two
parts, in or approximately in a plane passing through the axes of the said two
chain wheels. The said four parts when assembled in position enclosing the
driving gear substantially as and for the purpose set forth.
2. A case for covering the driving gear of velocipedes and the like consisting
of three principal parts one of which is adapted to be attached to the back stay
or other suitable part of the velocipede between the two rims of the chain and
between the two chain wheels, such part being further adapted to engage with and
carry the other (two) parts which run round the outside of the said chain and
chain wheels and which are divided beyond the ends of the first part in or
approximately in a plane passing through the axes of the said chain wheels these
parts when assembled in position enclosing the driving gear substantially as and
for the purpose set forth.
3. In a case, for excluding dirt and wet from the driving gear of relocipedes
of the kind referred to in Claims 1 and 2, dividing the outer principal parts,
that is to say, those which run round the outside of the chain and chain wheels,
beyond the ends of the other (or inner) principal part or parts in, or approximately
in a plane passing through the axes of the said chain wheels and making the said
outer parts approachable to and withdrawable from the said inner parts in or
approximately in the vertical plane of the said inner parts and in directions
perpendicular or approximately perpendicular to the said plane passing through the
axes of the chain wheels, substantially as and for the purpose set forth.
4. The improvements in or relating to cases for covering the driving gear of
velocipedes and the like substantially as described and herein illustrated.
Dated this 1st day September 1894.
WILLIAM BESTWICK MAXFIELD,
Registered Patent Agent,
19, Bowling Green Street, Leicester, Applicants' Agent.