An Improved Brake for Trolleys and other Vehicles.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
An Improved Brake for Trolleys and other Vehicles.
ROBERT BRASH WHEELER, of the Firm of J. Wheeler & Co., Fancy Warehouse-
men, 44, Bow Lane, and 90, North Side, Wandsworth Common, S.W., do hereby
declare the nature of this invention to be as follows:-
My improved brake consists of a pair of cranked levers pivotted to the frame
of the vehicle and provided at their lower ends with blocks which embrace the
wheel and bear against the ground. Such levers are operated by a handle which
when it is desired to move the vehicle is pressed backwards, thereby causing the
levers to expand and so raising the blocks from the ground and releasing the
wheels leaving them free to rotate. Immediately the pressure on the handle
is removed the blocks again clip the wheels and so stop the vehicle. Instead of
applying the brake automatically it may be applied by hand, the handle in that
case being furnished with a stop to hold it in position.
ROBERT BRASH WHEELER, of the Firm of J. Wheeler & Co., Fancy Warehouse-.
men, 44, Bow Lane, E.C., and 90, North Side, Wandsworth Common, S.W., 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 follow-
ing statement; —
My invention is an improved automatic brake, or scotch for trolleys, to pre-
vent them from moving or starting when unattended, on railway platforms or
other places.
I will now proceed to describe my invention.
Fig. 1 Sheet I, shews the side elevation of trolley with the brakes or scotches
on, and the trolley not in use, and is worked from the back end of the trolley.
Fig. 2, Sheet 2, is the plan of Fig. 1.
Fig. 3, Sheet 3, is the end elevation of Fig. 1.
Fig. 4 Sheet 3 is the side elevation of the back end of trolley shewing the brake
or scotches off and trolley in use.
Fig. 1. Sheet 1, shews the position of the crossbar A when the brake or
scotches are on, and the trolley not in use. By pushing the crossbar A against

page_text: the back of the trolley B as shewn in Fig. 4, it lifts lever C into position C³ as
shewn in Fig. 4 and at the same time lifts angle levers D against metal plate E¹
on the bottom of the trolley, causing them to expand into position DI D' as
shewn in Fig. 4, thus releasing the wheel, but immediately the hand of the
person using the trolley is withdrawn, and crossbar A released it falls into its
original position as shewn in Fig. 1 thus applying the brake or scotch to the
wheel.
The crossbar A is secured to two levers A2 A2 Fig. 3 and works on ful-
crum A3 A3 as shewn in Figs. 1, 2, 3 and 4, and lifts lever C by a pin or stud A*
as shewn in Fig. 1.
Lever C works on fulcrum C which is secured to the bottom of the trolley.
The fulcrum for levers A2 A2 are carried by two brackets A5 A5 and are fastened
to the vertical back rails of the trolley, or in any other convenient way.
The levers D, D, work on fulcrum C as shewn Fig. 1, and Fig. 4, Sheet 3.
The scotches E, E, Fig. 1 and Fig. 4, Sheet 3 can be made either of wood or metal,
and are fastened on to levers D, D, by bolts or screws, the clearance of scotches
in Fig. 4, can be regulated by the lift of lever C, Fig. 1.
The metal plate E¹ is fixed to the bottom of the trolley to prevent angle
levers D, D, from wearing away the wood.
Figs. 5, 6 and 7, shews an arrangement for working the brake or scotches from
either end of the trolley, by means of a lever A6 A6 linked on to levers A² by a
stud A7 as shewn in Figs. 5 and 7, connected on to lever A8 at Aº A⁹ and lever A8
works on fulcrum A10 as shewn in Figs. 5, 6, and 7. When the crossbar is pushed
into position A¹ Fig. 7, at either end of the trolley, it also acts on the opposite
end of the trolley, and brings the other crossbar into a similar position, lifting
the lever C as already explained in Figs. 1, 2, 3 and 4.
Fig. 5 is the side elevation of trolley, with brake or scotches on.
Fig. 6 the plan, and Fig. 7 the side elevation shewing the brake or scotches
off.
Figs. 8, 9 and 10, shew, an arrangement for trolleys drawn by a handle, with
the brake or scotch applied to the front wheel, Fig. 8 shews the brake or
scotch E, E on, and the handle A in an upright position, also resting on the
ground, in both cases the brake is on. The two front wheels turn on pivot B
as shewn in Fig. 8, 9, and 10. At the end of spindle B₁ is fixed a crank B²,
which when the handle is in any position between A2 and A³ as shewn in Fig. 10,
lifts lever C in Fig. 8 against metal plate E causing levers D, D to expand, as
already previously described, lever C works on fulcrum C which is attached to
a crossbeam F, as shewn in Fig. 9, and turns bodily on a pivot B, the pin in
crank B2 works in a curved slot 133 as shewn in Figs. 8 and 10, the handle can be
straight or otherwise.
In the above described the brake or scotches have only been applied to one
wheel, but in all cases if desired it can be applied to two wheels, it can also be
applied to other vehicles or hand carts.
The weight of levers D, D, C and A2 A2 is sufficient to scotch the wheels itself.
when the crossbar A is released, therefore it acts automaticly.
.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what
I claim is:
An improved automatic brake or scotch which will prevent trolleys or other
vehicles, from moving when left unattended on railway platforms or other
places.
Dated this 6th day of June 1899.