Improvements in Covers or Cases for the Chain Gear of Velocipedes.
Year: 1895

page_text: Date of Application, 4th Oct., 1895
Complete Specification Left, 4th July, 1896-Accepted, 15th Aug.,
1896
PROVISIONAL SPECIFICATION.
Improvements in Covers or Cases for the Chain Gear of
Velocipedes.
We, CHARLES WILLIAM BLUEMEL, ERNEST ADOLPHUS BLUEMEL and
FRANK HENRY BLUEMEL (trading as C. W. Bluemel & Bros.) of Crown
Works, Rose Place, Globe Road, London, E. Manufacturers, do hereby declare
the nature of this invention to be as follows:-
This invention consists of the hereinafter described improvements in covers or
cases for the chain gear of velocipedes, the object being to construct them in such
a manner that they can be more easily attached to the velocipede than has hitherto
been possible; while a gear case formed according to our present invention, will be
light, durable and noiseless, and efficiently fulfil all the ordinary requirements of
such an article.
A gear case according to this present invention, which is constructed of celluloid,
xylonite or other suitable material, cousists essentially of two parts, the back and
the front, the back being slightly smaller than the front which fits over it after the
manner of a lid, the two parts being then secured together by means of one, two or
more pivoted clamps or catches. The back of the gear case is also formed in two
parts, an upper and lower half, which are hinged together at one end, so as to
allow of the top half being raised to facilitate attachment to the machine, the top
half being then closed down and the free ends secured by means of a suitable
catch, the longitudinal joint being furnished with a covering strip or strips to
prevent the entrance of dust, damp or the like, and to make a tight joint.
The front of the gear case, which fits over the back after the manner of a lid, is
constructed in one piece and furnished with the usual depressions for the gear
wheels etc., and with suitable slides to fit closely around the axles of the velocipede,
and also to allow for chain adjustment, while at the end near the rear sprocket
wheel a top portion of the front is detached from the main part, the said detached
portion being hinged to the end of the case so as to allow of its being opened out
while fitting the case to the machine, it being then closed, and the top meeting
edges connected together by two metal plates, rivetted one to each edge, which are
furnished with alternate tubular projections, the projecting parts forming, when
brought together, a continuous tube through which a suitable pin is passed so as to
make a firm joint, the completed gear case being attached to the machine in a
similar manner to the gear case described in our former Letters Patent No. 22,539
A.D. 1892.
Dated in 1th dor of Ou1005
F. G. CASSELL
(Of Cassell & Co.),
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicants.

page_text: Improvements in Covers or Cases for the Chain Gear of
Velocipedes.
We, CHARLES WILLIAM BLUEMEL, ERNEST ADOLPHUS BLUEMEL and
FRANK HENRY BLUEMEL, (trading as C. W. Bluemel and Bros.) of Crown
Works, Rose Place, Globe Road, London, E. Manufacturers, 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 consists of the hereinafter described improvements in covers or
cases for the chain gear of velocipedes, the object being to construct them in such
a manner that they can be more easily attached to the velocipede than has hitherto
been possible, while a gear case formed according to our present invention, will be
light, durable and noiseless, and efficiently fulfil all the ordinary requirements of
such an article.
A gear case according to this present invention, which is constructed of celluloid,
xylonite or other suitable material, consists essentially of two parts, the back and
the front, the back being slightly smaller than the front which fits over it after
the manner of a lid, the two parts being secured together by means of one, two or
more catches. The back of the gear case is divided along the centre forming two
parts, an upper and a lower half, which are hinged together at one end, so as to
allow of the top half being raised to facilitate attachment to the machine, the top
half being then closed down and the free ends secured by means of a suitable
catch the longitudinal joint being furnished with a covering strip or strips to secure
the two halves and at the same time to prevent the entrance of dust, damp or the
like, and to make a tight joint.
The front of the gear case, which fits over the back after the manner of a lid, is
constructed in one piece and furnished with the usual depressions for the gear
wheels etc., and with. suitable slides to fit closely around the axles of the
velocipede, and also to allow of chain adjustment, while at the end near the rear
sprocket wheel a top portion of the top is detached from the main part, the said
detached portion being hinged to the end of the case so as to allow of its being
opened out while fitting the case to the machine, it being then closed and the top
meeting edges connected in any suitable manner.
In order that our invention may be more fully understood, we will now proceed
to describe the same with reference to the accompanying drawings in which Fig. 1
is a front elevation of our improved gear case complete, Fig. 2 being an elevation
of the back half of same, and Fig. 3 a cross section through the said gear
case.
Fig. 4 is a detailed view of the end of the gear case showing in dotted lines the
detachable portion in the raised position and Fig. 5 is a detailed view of the larger
end of the back of the gear case illustrating a slight modification in the form of
construction.
Our improved gear case consists essentially of two main parts viz.: the front a
and the back b, the former being slightly larger than the latter over which it fits
after the manner oi a lid, as clearly indicated in Fig. 3. The back b (Fig. 2) of
the gear case is further divided longitudinally at or about its centre, the two
parts and being hinged at h', the dotted lines showing the lower half c as
slightly lowered. The back is formed in this manner so as to allow of its being
more readily attached or secured to the machine and it is retained in the closed
position by means of a catch such as d (Fig. 3), while the joint is furnished or
fitted with covering strips s, s, of any suitable material.
The front of the gear case a is furnished with the usual
depression p and carries guides g, g, provided with slides f, f.
chain wheel
The smaller

page_text: end of the gear case is furnished with guides g¹, g', and g², g², designed to receive
the slides, as shown (Fig. 1) while the back of the case is fitted with two
guides g³, g, designed to accommodate the slide f³.
The back of the gear case is further provided or formed with a raised rib or
ridge to the edges of which is secured by means of stitches or in any other
convenient manner, a panel of leather furnished with a flap the lower edges of
which are eyeletted as shown in order that it may be readily laced or secured to
the said flap extending beneath same. This leather is designed to be cut or the
necessary hole or perforation for the axle of the machine to be formed in the
required position.
The front a of the gear case is further provided at the smaller end with a
detachable portion (Fig. 4) secured, when closed by a catch of a similar
construction to that shown at d, the said detachable portion being hinged at h while
the free edges are contained or held between plates t when in the closed position,
so as to allow of the said portion being raised when required, as indicated in
dotted lines, so as to allow of ready access being had to the chain and sprocket
wheels.
In order to secure the front and back of the gear case together, the back b
(Fig. 2) is furnished with two short pins p³, p³, designed to pass through short slots
formed in the flange or edge of the outer cover, while the top of the front or
cover a is furnished with a spring s¹ the free end of which carries a small pin v
passing through a hole or perforation, slot or the like formed in the edge or flange
of the front and back halves of the case, and the larger end of the front a is further
furnished or provided with a plate m the end of which is turned over and carries a
cross pin m³ the end of which is bent into the form of a ring and passes behind the
back of the case so as to further retain it in position until the said ring has been
turned in an outward direction.
Instead of the back of the case being furnished with leather / as shown in Fig. 2
it may, if required, be furnished with a chain wheel depression (Fig. 5) similar to
that shown at p (Fig. 1) but the leather is preferably adopted as it allows of the
said case being more easily fitted to the machine.
We wish it to be understood that we do not restrict ourselves to the number of
pins or other fastenings to be employed for securing the back and the front of the
gear case together, although those hereinbefore described will generally be found
sufficient.
The fastenings and connections for securing the completed gear case to the
frame of a velocipede are practically similar to those described in our former
Letters Patent No. 22,539 A.D. 1892, with the exception that the bolt therein
described as being permanently secured to the end of the gear case in this case
passes through the slot or perforation y in the plate y¹ which is capable of sliding
slightly upon the pins or rivets y² for the purpose of facilitating adjustment, but to
this arrangement we wish it to be understood, that we lay no claim.
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 what we
claim is :-
1. The new or improved gear case for velocipedes comprising a front a designed
to pass over the back 6 after the manner of a lid, said back being formed in two
parts c, c, the whole combined and arranged in combination with a detachable
portion such as p, and having the usual slides f, f¹, f, and g³, for adjustment, with
covering strips and pins p¹, p³, spring fastening s¹, and pin connection or
fastening m, m³, m², the whole combined and arranged substantially as herein
described and shown and for the purposes specified.
2. In combination with a gear case such as above claimed the formation of the
back b in two parts c, c¹ hinged together as at h and secured when in the closed
position by a catch such as d, substantially as described and shown and for the
purposes specified.

page_text: 3. The improvements in cases or covers for the chain gear of velocipedes,
substantially as herein described and shown and for the purposes specified.
Dated this lot dex of July 1806
F. G. CASSELL
(Of Cassell & Co.),
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicants.