Improvements in and relating to Velocipedes.
Year: 1892

page_text: Date of Application, 22nd June, 1892
Complete Specification Left, 22nd Mar., 1893-Accepted, 6th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in and relating to Velocipedes.
1 GEORGE ELLARD MARSHALL of 6, Grove Terrace, North End Road, West
Kensington, in the County of Middlesex, Mechanic, do hereby declare the nature
of this invention to be as follows:-
My invention relates to an improved construction of case or cover for enclosing
the chain driving gear of cycles, and it has for its object enabling such cases to be
more readily and easily fixed and applied.
In carrying my invention into practical effect I proceed as follows:-I take any
suitable form of clip capable of being fixed round the pedal-crank axle bracket or
bearing case, and to this clip I fix in any convenient manner a plate forming part
of one side of the case or cover. On to the axle carrying the driving wheel I place
a washer or sleeve adapted to be locked to the frame at the same time that the said
axle is locked thereto by the usual nuts. This sleeve or washer carries another
plate forming part of the other side of the case or cover. On to these two plates-
fixed to the frame of the machine as described-are fixed or attached the two parts
completing the case or cover.
On the plate carried by the axle of the driving wheel is formed or fixed the part
of the case or cover adapted to enclose the chain wheel on the driving wheel, the
rear portion of this part of the case or cover being preferably hinged to enable it
to be opened to facilitate the removal or replacement of the driving chain. The
sides of this part of the case or cover are made straight and parallel to enable it to
slide telescopically in the other part of the case or cover, which is also made with
straight and parallel sides at one end for the same purpose, the object being to
allow the two parts of the case to slide with respect to one another to allow of the
adjustment of the driving chain.
On to the plate fixed to or carried by the pedal-crank axle bracket or bearing
case, is attached or fixed by suitable bolts, screws, or their equivalents, the other
part of the case or cover. This is preferably made open along one of its edges to
enable it to be passed round the chain and member of the lower back fork, the
edges being fixed together when in position by bolts, screws, or their equivalents.
The edges of the cover are preferably strengthened by beads or their equivalents,
and where the two edges are adapted to be fixed together the bead on one of the
edges is split to allow the bead on the other edge to engage with it.
The case or cover may be made of any suitable metal, or other material, but I
prefer to make it of aluminium.
Dated this 22nd dox of June 1892.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to Velocipedes.
I, GEORGE ELLARD MARSHALL, of 6 Grove Terrace, North End Road, West
Kensington, in the County of Middlesex, Mechanic, 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:-
My invention relates to an improved construction of case or cover for enclosing

page_text: the chain driving gear of cycles, and it has for its object enabling such cases to be
more readily and easily fixed and applied.
In carrying my invention into practical effect I proceed as follows:-I take my
suitable form of clip capable of being fixed round the pedal-crank axle bracket
or bearing case, and to this clip I fix in any convenient manner a plate forming
part of one side of the case or cover. On to the axle carrying the driving wheel
I place a washer or sleeve adapted to be locked to the frame at the same time that
the said axle is locked thereto by the usual nuts. This sleeve or washer carries
another plate forming part of the other side of the case or cover. On to these two
plates fixed to the frame of the machine as described-are fixed or attached, the
two parts completing the case or cover.
On the plate carried by the axle of the driving wheel is formed or fixed the part
of the case or cover adapted to enclose the chain wheel on the driving wheel, the
rear portion of this part of the case or cover being preferably hinged to enable it
to be opened to facilitate the removal or replacement of the driving chain. The
sides of this part of the case or cover are made straight and parallel to enable it to
slide telescopically in the other part of the case or cover, which is also made with
straight and parallel sides at one end for the same purpose, the object being to
allow the two parts of the case to slide with respect to one another to allow of the
adjustment of the driving chain.
On to the plate fixed to or carried by the pedal-crank axle bracket or bearing
case is attached or fixed by suitable bolts, screws, or their equivalents, the other
part of the case or cover. This is preferably made open along one of its edges to
enable it to be passed round the chain and member of the lower back fork, the
edges being fixed together when in position by bolts, screws, or their equivalents.
The edges of the cover are preferably strengthened by beads or their equivalents,
and where the two edges are adapted to be fixed together the bead on one of the
edges is split to allow the bead on the other edge to engage with it.
In order that my invention may be fully understood I will more particularly
describe it making reference to the accompanying drawing, in which
Figure 1 is a view in side elevation of my improved case or cover.
Figures 2 and 3 are views in front and back elevation respectively of the case or
cover.
Figure 4 is an end view of the plate adapted to be fixed to the pedal-crank axle
bracket or bearing case.
Figure 5 is a view in transverse section of the case on line a, x, Figure 1 showing
one side of the case open, and
Figure 6 is a view in plan of the case showing one side of it open.
Throughout the several views similar parts are marked with like letters of
reference.
On to the pedal-crank axle bracket or bearing case X of the velocipede I fix-by
means of a clip A or its equivalent-a plate B forming part of one side of the case
or cover.
On to the axle Z of the driving wheel of the velocipede I clamp between the cone
on the axle and the frame of the machine a plate C forming part of the other side
of the case or cover. These two plates carry or support the other parts of the case
or cover.
On to the plate C is formed or fixed the part C¹ of the case or cover adapted to
enclose the chain wheel on the driving wheel. A portion C³ of this part of the
case or cover is formed as a hinged cover as shown by Figures 1, 2, and 6 to
facilitate the removal and replacement of the driving chain. In the side of the
part C of the case or cover fitting against the hub of the driving wheel is formed
à circular hole large enough to allow this part of the case to be passed over the
chain wheel on the driving wheel. This hole is closed by a divided plate D, one
part of which is attached to the hinged cover C² so that it moves with the said cover
as shown by Figure 1, and the other part is loosely mounted in a channel formed
.

page_text: round the hole in the part C¹ of the case or cover so that it can be removed
therefrom when the hinged cover C² is open.
On to the plate B fixed to the pedal-crank axle bracket or bearing case is
attached or fixed the other part E of the case or cover, the one side E' of which
is made open-preferably along its top edge-to enable it to be passed round
the driving chain, and the member of the frame forming one prong of the lower
back fork, as shown by Figures 5 and 6. This open side E¹ of this part of the
case or cover is closed to the other part by means of bolts, screws, or sliding
pins e, e, preferably the latter as shown in the views of the accompanying drawing.
The main part E of the case or cover is also attached or fixed to the plate B by
similar contrivances.
The open end of the part C of the case or cover is adapted to telescope within
the other part E thereof as shown to allow of the adjustment of the driving chain.
The cover is preferably made of aluminium and its edges are preferably strengthened
by beads or their equivalents, and when the two edges are adapted to be fixed together
the bead on one of the edges is split to allow the bead on the other edge to engage
with it:
By thus constructing a gear case in the manner hereinbefore described it can
readily be attached to or removed from the frame while at the same time it is firmly
and securely fixed thereto when attached.
I wish it to be clearly understood that I do not limit myself to the precise details
of construction hereinbefore described and illustrated by the accompanying drawing,
but that I hold myself at liberty to make such changes and alterations as fairly fall
within the spirit and scope of my invention.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The improved construction of case or cover for enclosing the driving chain gear
of velocipedes, substantially as set forth.
2. The combination and arrangement of the respective parts forming the improved
gear case, as set forth.
3. In a gear case or cover the combination of the plate B adapted to be fixed
by a clip A or otherwise to the pedal-crank axle bracket or bearing case, of the
plate C adapted to fit over the end of the axle carrying the driving wheel and to be
clamped between the cone thereon and the frame, of the end part C¹ carried by the
plate C and having a hinged cover C2 and divided plate D, and of the main
body of the case or cover E having one side E' open along its top edge and
adapted to be attached to the parts B and C by suitable fastening devices such as
the sliding bolts or pins e all combined, arranged and operating as and for the
purpose set forth.
ROBT. ED. PHILLIPS, M.1.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.