An Improved Brake for Bicycles and Tricycles, the same being Applicable also to the Wheels of other Vehicles.
Year: 1889

page_text: Date of Application, 23rd Jan., 1889
Complete Specification Left, 9th Oct., 1889-Accepted, 9th Nov., 1889
PROVISIONAL SPECIFICATION.
An Improved Brake for Bicycles and Tricycles, the same being
Applicable also to the Wheels of other Vehicles.
1, JAMES MCDONALD BOYD of Market Square, Galashiels, in the County of Selkirk,
North Britain, Cycle Agent do hereby declare the nature of this invention to be as
follows:
This Invention, which relates to an improved brake for bicycles and tricycles, is
also applicable to the wheels of other vehicles for transit in common roadways and
the object of the Invention is to provide considerably increased brake power whilst in
the case of cicyclists it provides for them additional ease whilst "coasting" long
hills.
The Invention consists of a pair of levers each formed with a spoon or hollow
grate surface which bears upon or against the tyre of the wheel or wheels to which
the brake is to be applied. One of these levers is attached to an axis which is rigid
relatively to the axis of the wheel. The other brake lever is attached at one end to
the aforesaid lever and its other end is attached to a lever coupled to the operating
handle. By the movement of the operating handle the last named brake lever is not
only pressed downwards upon the wheel but is simultaneously drawn horizontally
forwards so that the moment it commences to brake the wheel its horizontal movement
also brings the first mentioned brake lever into operation upon the wheel so that by
one action of the operating lever the two brakes are at once brought into operation
instead of one as hitherto."
"
Springs are provided for withdrawing the brake levers from the wheels.
n
30 1 1
c T
1000
ST. JOHN V. DAY,
115, St. Vincent Street, Glasgow, Petitioner's Agent.
COMPLETE SPECIFICATION.
An Improved Brake for Bicycles and Tricycles, the same being
Applicable also to the wheels of other Vehicles.
I, JAMES MCDONALD BOYD of Market Square, Galashiels, in the County of Selkirk,
North Britain, Cycle Agent 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 stateinent :-
This Invention which relates to an improved brake for bicycles and tricycles,
is also applicable to the wheels of other vehicles for transit in common roadways,
and has for its object to provide a considerably increased brake power whilst
in the case of cyclists it provides for them additional ease whilst "coasting" long
hills.
This Invention consists in the employment of an extra spoon brake mounted
imme liately behind the Forks, to which the ordinary front spoon brake is jointed, by
which means on the action being applied to the front brake it causes the wheel to
draw on the back brake, so that no extra force is required from the brake lever, thus
doing away with all extra strain on the hand.
In order that my said Invention may be more readily understood and carried into
effect I will proceed to describe it with reference to the accompanying Drawings,
Figure 1 of which is a part sido elevation of a Safety bicycle having my improved
brake attached, the position shown of the brake being when off, and Figure 2, a part
side elevation of the same, but with the brake on.

page_text: A, Figures 1 and 2, is the driving wheel of a Safety bicycle, having the forks B
mounted in the usual manner. Immediately behind the said forks B, I mount a suit-
able shaped lever C, having its end c, formed as a spoon, or having a hollow grate
surface which bears upon the tyre of the wheel or wheels to which the brake is to be
applied, this lever C, is attached at its other end to a suitable pin c¹, or axis which
is rigid relatively to the axis of the wheel. The other levar or front brake D, is also
formed with a spoon d, or hollow grate surface at its one end, and is attached at
its other end by a suitable pin or axis d', to the lever C, as shown. This lever D,
being also coupled by suitable means preferably by a pin or its equivalent e, to the
lower end of the operating handle lever or rod E, which is provided with a suitable
spring F, for the purpose of withdrawing and holding the front brake D off the
wheel, there being also another suitably mounted spring G so mounted as to withdraw
and hold the back brake lever C, off the wheel, in unison with the front brake D.
The action of the whole being such that on the operating handle being moved it
presses down the rod or lever E, thus causing the brake lever D, to be not only
pressed downwards but simultaneously drawn horizontally forwards, so that the
moment the brake lever D, commences to brake the wheel, its horizontal movement
also brings the brake lever C, into operation upon the tyre of the wheel, so that by
one action of the operating handle, the two brakes C, and D, are at once brought
to bear upon the tyre of the wheel, as shown in Figure 2, instead of one as hitherto,
thus providing a very effective brake, giving more than double the effect with the
same amount of applied power.
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 :-
First. In bicycles, tricycles and other vehicles for transit in common roadways, the
employment of a pair of brake levers, so arranged relative to one another that by the
one action of the operating handle both brake levers are caused to come into
operation simultaneously on the wheel or wheels to be braked, as described and
shown.
°
Second. In brakes for bicycles, tricycles, and other vehicles, the general arrange-
ments and construction of the brake levers C, and D, having pivot c¹, and joints d',
and e, or their equivalents, and in combination therewith the operating handle
lever E, and springs F, and G all substantially as and for the purposes herein before
described and shown in the accompanying Drawings.
Dabed
243
ப
1000
JOHNSONS,
115, St. Vincent Street, Glasgow, Applicant's Agents.
JOHNSONS,
115, St. Vincent Street, Glasgow, Applicant's Agents.