Improvements in Vehicle Brakes.
Year: 1891

page_text: Date of Application, 16th Apr., 1891
Complete Specification Left, 18th Jan., 1892-Accepted, 27th Feb., 1892
PROVISIONAL SPECIFICATION.
Improvements in Vehicle Brakes.
A communication from ALFRED GELHAR, of Thillay, in the Republic of France,
Laundry Proprietor.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
M.I.M.E., do hereby declare the nature of this invention to be as follows:-
This invention consists of an improved brake having a compound or double
action and adapted to arrest the wheels of vehicles in motion either from the front
or the rear.
This brake consists of a rope of hemp, wire or other suitable material wound on
a drum or hoop fitted to the axle. Ench end of this rope is looped for the
reception or connection therewith of a chain whereby they are both connected to a
stationary ring or link.
There is also provided an operating plate made preferably of iron and provided
with two inclined perforations for the passage of the rope.
To the centre of this plate is connected a yoke or fork which is connected by a
lever or link of which it may form a part, to a crank-handle or treadle arranged
within reach of the driver.
This link or lever is preferably mounted on the axle and the driver is enabled to
impart to the plate a radial movement towards or from the axle.
The movement of the plate results in a pulling strain being exercised upon the
ends of the rope but inasmuch as the point at which the ends of the rope or the
chains connected thereto are connected together is permanent or fixed this strain is
transmitted to the rope which will in consequence firmly grip the drum around
which it is coiled and thereby retard or stop its rotary motion.
As soon as the plate is released from the strain the rope becomes loose and
enables the axle to revolve as before.
This brake is applicable to vehicles, carriages, and the like of any description.
Dated this 16th day of April 1891.
иргоѵощеню
A communication from ALFRED GELHAR, of Thillay, in the Republic of France.
Laundry Proprietor.
I, ALFRED JULIUS BOULT of 323 High Holborn, in the County of Middlesex,
M.I.M.E., 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 an improved brake having a compound or double
action and adapted to arrest the wheels of vehicles in motion either from the front
or the rear.
In the accompanying drawings

page_text: Figure 2 a plan view thereof,
Figure 3 a front view of the operating plate G fitted with its yoke,
Figure 4a front view,
Figure 5 a vertical section and
Figure 6 a horizontal section of a modified form of the apparatus.
Like letters indicate like parts throughout the drawings.
The brake consists of a rope A (Figures 1 and 2) of hemp, wire or other
suitable material wound on a drum or hoop B fitted to the axle C. Each end of
this rope A is looped for the reception or connection therewith of a chain D or E
whereby they are both connected to a stationary ring or link F (Figs. 1 and 2).
There is also provided an operating plate G made preferably of iron and provided
with two inclined perforations g and g' (Figures and 3) for the passage of the
rope.
To the centre of this plate is connected a yoke or fork H (Figures 1 2 and 3)
which is connected by a lover or link of which it may form a part to a crank handle
treadle or foot lever arranged within reach of the driver.
This link or lever is preferably mounted on the axle and the driver is enabled to
impart to the plate G a radial movement towards or from the axle C.
The movement of the plate G results in a pulling strain being exercised upon the
ends a and a' of the rope A (Figure 1) but inasmuch as the point F at which the
ends of the rope or the chains connected thereto are connected together, is
permanent or fixed this strain is transmitted to the rope A which will in con-
sequence firmly grip the drum around which it is coiled and thereby retard or stop
its rotary motion.
As soon as the plate is released from the strain the rope becomes loose and
enables the axle to revolve as before.
In the modification illustrated in Figures 4, 5 and 6 the plate C instead of having
two perforations for the passage of the cord as the before-described plate G has, is
hinged by means of a link A to each end of the cord, the pivot of A being itself
jointed (on the Gall system) and terminating at a fixed point B.
In this manner the plate with the two joints forms a triangle of which the fixed
point B forms the apex and the plate C the base. To stretch the cord in this
arrangement, the plate C instead of being moved towards the nave, is on the
contrary moved away from it in the direction of the arrow D.
As the point B cannot be displaced, the before mentioned joints are necessary to
enable the triangle to undergo the necessary alterations in the operation of the
brake. As soon as action upon the operating plate is discontinued, the brake also
becomes inoperative, similarly to what it does under the same circumstances in the
device hereinbefore described.
The pins also referred to in connection with the before described arrangement
are here dispensed with, the plate C being permanently connected with the
stationary part B, while it is capable of being shifted in the direction of the
arrow F.
This brake is applicable to vehicles, carriages, and the like of any description.
Having now particularly described and ascertained the nature of the said inven-
tion as communicated to me by my foreign correspondent, and in what manner
the same is to be performed, I declare that what I claim is:-
1. A brake acting through the medium of a rope or equivalent upon the axle of
the vehicle for the purpose of arresting its motion by either a forward or rearward
strain, substantially as described and shown in the accompanying drawings.
2. In a brake the combination with a drum fast upon the axle to be controlled of
a rope chain or equivalent coiled around the drum and an adjustable plate adapted
to move nearer to or farther from the drum so as to tighten or loosen the rope
substantially as described and illustrated in the accompanying drawings.
3. In a brake device the arrangement of an operating plate connected by means

page_text: of a hinge or joint to both ends of a cord, and also to a fixed point, whereby the
said plate may be shifted in one direction only, for the purpose of applying the
brake, substantially as described.
ليمي
Laman 1802
W. P. THOMPSON & BOULT,
Agents for the Applicant.