New or Improved Brake for Hand Trucks and Trolleys.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
A New or Improved Brake for Hand Trucks and Trolleys.
We, EDMUND BUSH, of Stratford Street, Dewsbury Road, Leeds, Engineer,
and CHARLES EDWARD RHODES, of Park Terrace, Pudsey, near Leeds, Engineer.
both in the County of York, do hereby declare the nature of this invention
to be as follows:-
The object of this invention is to construct brakes for hand trucks and trolleys,
hereinafter termed trolleys, in such a manner that when they are not in use the
wheels are braked automatically, and they are then held braked until they are
released by hand, thus effectually preventing them from starting by themselves
and gaining speed on an incline, to the possible danger to persons and railway
traffic.
According to our invention, we employ one or more brake shoes which are
centred in such a manner that they may be rocked to and from the wheels as
required, and the said shoes are automatically pressed against the wheels of the
trolley by means of toggle pieces which are kept against the brake shoes by
means of suitable springs or counter-balance weights. The undersides of the
toggle pieces are connected to a bar running longitudinally under the floor of
the trolley, and the ends of the bar are coupled to bell-crank levers which are
fulcrumed to the frame, and whose opposite arms are connected to two sliding
rods carried in vertical guides at opposite ends of the trolley; in such a manner
that the depression of either of the sliding rods releases the brake, and the con-
tinued depression keeps the brake out of action. The trolley can thus only move
whilst one of the rods is held down, and this can be done with ease by the porter
or other person pushing the trolley, but on the rod being released the brake
becomes applied automatically, thus preventing the trolley continuing or starting
to move when it is not under proper control.
The sliding rods could also be employed for releasing strap or other brakes,
and the brakes could be applied by levers, arms, or other connections as desired.
1
1011
November AD
1898
BREWER & SON,
London and Leeds, Agents for the Applicants.
A New or Improved Brake for Hand Trucks and Trolleys.
We, EDMUND BUSH, of Stratford Street, Dewsbury Road, Leeds, Engineer,
and CHARLES EDWARD RHODES, of Park Terrace, Pudsey, near Leeds, Engineer,
both in the County of York, do hereby declare the nature of this invention
077

page_text: and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
The object of this invention is to construct brakes for hand trucks and trolleys,
hereinafter termed trolleys, in such a manner that when they are not in use the
wheels are braked automatically, and they are then held braked until they are
released by hand, thus effectually preventing the trolleys from starting by them-
selves and gaining speed on an incline, to the possible danger to persons and rail-
way traffic.
In order that our invention may be clearly understood we will proceed to
describe the same with reference to the accompanying drawing in which, similar
letters refer to like parts in both the figures.
Figure 1 is a side elevation of a trolley fitted with a brake constructed accord-
ing to our invention, and Figure 2 is an inverted plan of the same trolley.
According to our invention A, A are brake shoes which are fulcrumed on
brackets B, B which are attached to the under. frame of the trolley in such a
manner that they may be rocked to 'and' from the wheels as required. The
shoes A are connected together by a connecting bar C; the centre of which carries
an adjustable incliné D, and the' said incline is subjected to a toggle action by
means of a roller E carried on a triangular piece F fulcrumed at the base of a
divided, bracket G attached to the underframe of the trolley. The triangular
pièce F is connected to a bar H the ends of which are coupled to bell crank
levers J and K fulcrumed on a lug L and bracket M respectively and the opposite
arms of the bell crank levers J and K are connected by means of connecting
rods N and P with two adjustable lugs N and P¹ carried on hinged handle bars R
and S. T is a spring which tends to keep the parts above described in the
positions shewn, in the drawing.
When it is required to move the trolley, one of the handles R or S is depressed,
thus causing the bar H to move out against its spring taking with it at the same
time the piece F and raising the roller E from the incline D. The said inclino
being thus relieved, the weight of the shoes A causes them to swing away from
the wheels, which are thus released and kept free so long as the handle R or S
is kept depressed. On the said handle being released, the spring moves the
bar H back to its normal position thus turning the piece F on its fulcrum and
causing the roller E to move down the face of the incline D which is wedged
forwards with great force and presses the shoes A against the wheels of the
trolley. The trolley, can thus only move whilst one of the rods N or Pis
depressed, and this can be done with ease by the porter or other person pushing
the trolley; but on the handle R or being let go the rod is released and the
brake becomes automatically, applied, thus preventing the trolley continuing or
starting to move when it is not under proper control.
The amount of leverage and positions of the rods N and P may be adjusted
through the medium of the lugs N and P¹, and the rods N and P are provided
with screw ends to enable their lengths to be "adjusted as required.
The rods N and P could be made to slide: vertically in guides if desired, in
which case the handles R and S instead of being hinged would be made to move
vertically also. It is quite immaterial which end of the trolley is pushed, as the
depression of either of the handles R or S slides the bar H, with the consequent
result of releasing the brake.
1'
By the adjustment in angle of the incline D the amount of movement or play
may be regulated as required. By connecting the bar C to the triangular piece I
by means of a link, the incline D and roller
toggle-movement is thus obtained.
may be dispensed with, and a true
:
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is ;-
1. The bell crank levers J and K connected together by the har H and operated.

page_text: by sliding rods N and P situated at opposite ends of the trolley, in combination
with suitable brake mechanism operated from the bar H, substantially as and for
the purposes set forth.
2. The combination of the shoes A, connecting bar C, adjustable incline D,
triangular piece F, roller E, divided bracket G and bar H, substantially as and
for the purposes set forth.
3. The combination of the shoes A, brackets B, bar C, incline D, triangular
piece F, roller E, divided bracket G, bar H, bell crank levers J and K, lug L,
bracket M, connecting rods N and l', lugs N¹ and P¹, hinged handles R and S,
and spring T, substantially as and for the purposes set forth.
Dated this 5th day of August A D 1890
BREWER & SON,
London and Leeds, Agents for the Applicants.