Improvements in the Manufacture of Dress Guards and Chain Covers for Ladies' Safety Bicycles.
Year: 1893

page_text: Date of Application, 4th Nov., 1893
Complete Specification Left, 4th Aug., 1894-Accepted, 15th Sept.,
1894
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Dress Guards and Chain
Covers for Ladies' Safety Bicycles.
I, HORACE WALTER DOVER of The Dorman Engineering Company,
Mayorhold, Northampton, Engineer, do hereby declare the nature of this invention
to be as follows :-
This invention relates to improvements in the manufacture of dress guards and
chain covers for ladies' safety bicycles, and consists essentially in moulding the dress
guard and chain cover each in one piece of papier maché, celluloid, xylonite, or other
material capable of being moulded when in a pliable or plastic condition and which
when dry or set, will have sufficient strength and rigidity for the purpose for which
it is intended.
.
The dress guard is a quadrant-shaped casing adapted to enclose the upper part of
the wheel and formed by two side cheeks and an arched peripheral portion moulded
in one piece therewith by the usual method and means of moulding articles of such
material. It is fixed to the frame of the machine by straps fixed to the side cheeks,
embracing the back stays and by a bolt fixed to the peripheral portion of the
guard, secured to the crossbar of the back stays in the usual way of fixing a mud
guard.
The chain cover is also moulded complete with the exception of the hub end. It
has an outer face or cheek extending rearwards as far as the hub and slotted towards
the rear end to give passage to the back stay, the edges of this cheek turning over
and inwards so as to form a cover by which the chain gearing is partially or wholly
enclosed. It is secured in position at the front end by an internal bracket fixed to
the rear leg and at the rear or hub end the cover is completed by a metal U-shaped
end frame attached to a longitudinal bracket fitting on the wheel spindle, the
bracket being slotted to admit of adjustment of the chain gear, the U-shaped frame
being U-shaped also in cross-section and its side members fitting upon the
correspondingly rounded top and bottom edges of the chain cover so as to be
adapted to embrace a greater or less portion of the length of the cover and be riveted
thereto, to suit the distance between the crank axle and the hub which varies in
different machines.
Duted this 4th day of November 1893.
H. W. DOVER,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Dress Guards and Chain
Covers for Ladies' Safety Bicycles.
I, HORACE WALTER DOVER, of The Dorman Engineering Company,
Mayorhold, Northampton, Engineer, 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 relates to improvements in the manufacture of dress guards and

page_text: chain covers for ladies' safety bicycles, and consists essentially in moulding the dress
guard and chain cover each in one piece of papier maché, made of extra strong
fibre, and japanned after being brought to its final form so as to thoroughly protect
it from wet.
The invention will be described with reference to the accompanying drawings
forming part of this Specification wherein
Figure 1 represents a side elevation of the dress guard and as much of the frame
of a bicycle as is necessary to illustrate the mode of fixing, the chain cover being
removed.
Figure 2 is a cross section of the dress guard on line 2-2 Figure 1, looking
in the direction of the arrows.
Figure 3 is a detail view of one of the straps for fixing the dress guard.
Figure 4 is a side elevation of the chain cover.
Figure 5 is a cross section of same on line 3-3 Figure 4 and
Figure 6 is a detail view of the bracket for fixing the chain cover to the
back leg.
The dress guard is a quadrant-shaped casing A of the form shown in side view
and cross section in Figures 1 and 2 and adapted to enclose the upper part of the
driving wheel, the said casing being moulded of papier maché in one piece by the
usual method and means of moulding articles of such material. The casing A is
fixed to the frame of the machine by metal straps B (Figure 3) fixed to the sides
of the casing embracing the back stays C and by bolts de fixed to the peripheral
portion of the dress guard A and secured, the one, to the cross-bar c of the back
stays C, and the other, to the cross-bar f of the rear legs F, the dress guard being
provided at this point with a sheet metal shield 9 rivetted to it to which the bolt e
is secured as shown.
The rear end of the dress guard bas a sheet metal binding a rivetted to it and is
provided with a mud guard extension flap a' made of leather.
The outer side of the dress guard is of less depth than the other side so as to
adapt it to accommodate the chain cover or gear case.
The chain cover G is made of the same material as the dress guard and is
moulded complete with the exception of the hub end. Its outer face or cheek, that
is to say the moulded cover G extends rearwards as far as the hub only and its outer
face or cheek is slotted at g¹ to give passage to the back leg F, whilst towards the
front it has an oblong sloth adapted to pass over the boss of the crank axle
bearing. At the rear side of the cover there is an opening i large enough to pass
clear over the chain gearing which is thus only partially enclosed. The cover is
secured in position at the front end by screws k screwing into an internal bracket K
fixed to the rear leg F by a strap k. At the rear or hub end the cover G is
completed by a U-shaped end piece of sheet metal L rivetted to a longitudinal
slotted bracket fitting on the spindle of the back hub and gripped between the
cone and the adjustment the bracket being slotted to admit of setting it forward or
backward to suit the adjustment of the chain gear. The end piece L is of half
round cross-section and its longitudinal members fit with a sliding connection upon
the correspondingly rounded top and bottom edges of the chain cover G, to which
they are secured by screws . By making these longitudinal members of the end
piece L embrace a greater or less length of the cover G the length of the cover can
be varied to suit the distance between the crank axle and the hub which varies in
different machines.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1. The herein described dress guard moulded in one piece substantially of the
form showen and commed in th C

page_text: 2. The herein described chain cover moulded substantially of the form
described and combined with an adjustable end piece of metal substantially as
specified.
Dated this 3rd day of August 1894.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.