Improvements in Bicycles.
Year: 1896

page_text: Improvements in Bicycles.
I CHARLES FITZ ROY ALEXANDER HALLIFAX BAGÓT of 59 Cadogan Square in the
County of London Esquire do hereby declare the nature of this invention to be as
follows:-
My invention has for its object to provide an improved frame for bicycles which
is much stronger, more rigid, and lighter than are such frames as hitherto constructed.
According to my invention the frame is made of curved bars or tubes which are of
arch or equivalent curved form so disposed as to most efficiently resist the strain
brought upon them, the said frames being preferably male of two such bars, or tubes,
placed side by side, with a space between them to accommodate the saddle tube or
rod and the head tube for receiving the steering stem or handle-bar pillar. The
said bars or tubes constituting the frame are preferably inserted at one end into a
socket formed to receive the ends in the bracket body and are then carried forward
and curved outwards and then curved upwards to form the equivalent of the top tube,
they being then carried down to constitute the back stays and their other ends inserted
in sockets formed for their reception in the blocks, which carry the axle of the hind
wheel. The said sockets are preferably in the same longitudinal planes as the said
blocks which also receive the rear ends of the chain stays whose other ends are inserted
in a socket on the bracket body. The arched form of the bars or tubes at the part
which corresponds to the top tube is presented with its convexity upwards in a machine
for male riders but, for machines for female riders, the said bars, or tubes, instead of
being carried over in this simple arched form, are curved downwards, and joined by
clips, clamps, or loops to the parts of the bars, or tubes, extending forwards from the
bracket body and then are curved upwards and back to constitute the backstays. The
saddle tube or rod and the head tube which receives the steering stem or handle-bar
pillar may be secured to the bars or tubes aforesaid by clip pieces clamps or the like
which embrace the two bars or tubes and may be perforated for the passage of the
said saddle tube or rod and head tube. The lower end of the saddle tube or rod is
preferably pivotted to, or socketted in the bracket body so that the said saddle tube
or bar can be moved for adjusting the position of the saddle forward and backward.
The front forks are preferably each constituted by bars or tubes which are arched out-
wards relatively to each other, and are inserted in sockets on the axle carrying blocks
of the front wheel, their other ends being fixed in fork crowns connected with the
steering stem or handle-bar pillar. The arched bars or tubes are preferably of
D section with the flat faces presented towards each other as regards the frame, and
presented towards the wheel, as regards the front wheel fork.
The ends of the bars, or tubes, may be brazed, or otherwise secured, in the sockets.
which receive them.
11906
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.

page_text: Improvements in Bicycles.
I, CHARLES FITZ ROY ALEXANDER HALLIFAX BAGOT, of 59 Cadogan Square, in
the County of London, Esquire, 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 has for its object to provide an improved frame for bicycles which
is much stronger more rigid and lighter than are such frames as hitherto constructed.
According to my invention the frame is made of curved bars or tubes which are
of arch or equivalent curved form so disposed as hereinafter described as to most
efficiently resist the strain brought upon them, the said frame being preferably made
of two such bars, or tubes, placed side by side, with a space between them sufficient at
the necessary places to accommodate the saddle pillar or support and the head tube,
or socket, for receiving the stem, or shank, of the steering handle bar.
Figure 1 of the accompanying drawings represents in side elevation a bicycle
with a frame constructed according to my invention the saddle being removed.
Figure 2 is a plan of the same and
Figure 3 is a section of the frame on the line 1-2 Figure 1 drawn to an
enlarged scale.
The bars, or tubes, A A2 constituting the frame are each inserted at one end
into a socket B formed to receive the said ends in the bracket body B. From
the bracket body B the bars or tubes extend forward then curve upwards as
shewn at a then backwards in an arched form as shewn by dotted lines at a
and then are carried down as shewn at a³ to constitute the back stays and their
other ends are inserted in sockets.cc formed for their reception in the blocks CO³
which carry the axle of the hind wheel. The sockets c c are preferably in the
same longitudiual planes as the said blocks CC which also receive the rear ends d
of the chain stays D the other ends d2 of the said stays being inserted in
sockets B³ on the bracket body B2. The arched form of those parts of the bars
or tubes which take the place of the ordinary top tube of a machine for male
riders is presented with the convexity upwards as shewn by dotted lines a² in
Figure 1, but for machines for female riders, the said bars, or tubes, instead of
being carried over in this simple arched form are curved downwards and are then
carried parallel to the other parts of the bars or tubes extending forwards from
the bracket body B2 and then upwards as shewn at a and are then curved
backwards as shewn at a³ to constitute the back stays. To increase the strength
and rigidity of the frame as arranged for female riders rods or tubes A3 are
interposed between the bracket body B and the upper part of the back stays a³
the said rods or tubes A³ being inserted at their lower ends in sockets B in the
bracket body B2 and connected by clips, clamps or the like to the rods or
tubes A A at the upper part of the back stays a³. In the frame as arranged for
male riders the said rods or tubes A³ will be continued in a bowed form one
side being formed by the part A3 and the other by a part like at the upper part or
parts being passed through or into a clamp or the like which joins it to the arched
part of the frame formed by the parts a a3 and the lower ends of the said sides being
inserted in sockets in the bracket body B2. The head tube G which receives the stem
of the steering handle-bar may be secured to the bars or tubes A A' by clip pieces,
clamps or the like, as shewn at 62 in the case of the machine for male riders and as
shewn at 62 26 in the case of the machine for female riders which clips clamps or
the like embrace the two bars or tubes A A2. The saddle tube F is adjustably secured
in the clip or
clamp carrying the tubes or bars A A2 and to the additional rods or
tubes A3 by a clip or clamp which as well as connecting the said rods or tubes

page_text: supports the lower end of tube F to which it is connected by a nut. screwed onto.
a split screw on the lower end of the tube which split tube straddles a web on the-
clip 63. Or the clip 63 may be provided with a perforation for the passage of the said
saddle tube or rod and the lower end of the said saddle tube be pivotted to or socketted
in the bracket body B2 so that the said saddle tube or bar can be moved for adjusting
the position of the saddle forward and backward any suitable ineans being provided
for clamping it in its adjusted position. The arms of the front forks are preferably
each constituted by bars or tubes H which are arched outwards relatively to each
other their lower ends being inserted in sockets h on the blocks carrying the axle of
the front wheel, the upper ends of the said bars or tubes H being fixed in fork crowns [
connected to the steering pillar which receives the stem of the handle-bar. The bars
or tubes A A A and H are preferably of D section with the flat faces presented
towards each other, as regards the frame, and presented towards the wheel, as regards
the bars or tube H of the front wheel-fork.
The ends of the bars, or tubes, may be brazed, or otherwise secured, in the
sockets and clips which receive them, for instance, there may be projections on
the one which enter recesses in the other clamps being used to bind the parts
together.
The tubes which form the frame can be connected together at any suitable.
intervals by connecting pieces as shewn. Those not specially referred to herein-
before are marked ; and k those marked j embracing the adjacent pairs of tubes.
and those marked k embracing two pairs of tubes and binding them together.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1. A bicycle frame formed of tubes or bars arranged side by side and connected
together so as to leave a space between them substantially in the manner and for
the purpose hereinbefore described.
2. A bicycle frame formed of tubes or bars of D section arranged side by side-
and disposed and connected together substantially as hereinbefore described so as.
to most efficiently resist the strain brought to bear on the said frame.
3. A bicycle frame having in side elevation the form herein before described and
shewn in the accompanying drawings in full lines as applied to machines for
female riders and modified as indicated in dotted lines as applied to machines for
male riders.
4. The construction of the members of the front forks of bicycles each of bars.
or tubes which are arched outwards relatively to each other as hereinbefore
described and illustrated in the accompanying drawings.
5. The combination and arrangement of parts constituting the improved bicycle.
frame hereinbefore described and illustrated by the accompanying drawings.
Dated this 16th day of February 1897.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.