An Improved Auxiliary Brake for Tramway Cars and other Vehicles.
Year: 1890

page_text: Date of Application, 3rd May, 1890
Complete Specification Left 1st Sent.. 1890-Accepted, 4th Oct., 1899
PROVISIONAL SPECIFICATION.
An Improved Auxiliary Brake for Tramway Cars and other
Vehicles.
I ALFRED DICKINSON of Tramway Depot Darlaston in the County of Stafford
Tramway Manager do hereby declare the nature of this invention to be as follows:-
An improvement in the method of fixing and applying auxiliary brakes for tram-
way cars and other vehicles whereby increased efficiency and greater simplicity is
obtained and consists of a drum or drums either solid or built up with wood iron or
other approved materials fixed upon the axles of the vehicles with suitable brake
blocks hung in such a manner as to be easily applied to the drams. These blocks are
manipulated by means of levers pulleys, or chains and by special ratelict levers
whereby unlimited travel is obtained and can be applied effectually with the exertion
of less manual force than is the case with other kinds of brakes.
D1000
ALFRED DICKINSON.
COMPLETE SPECIFICATION.
An Improved Auxiliary Brake for Tramway Cars and other
Vehicles.
I ALFRED DICKINSON of Tramway Depôt Darlaston in the County of Stafford,
Tramway Manager do hereby declare the nature of the said invention and in what
manner the same is to be performed to be particularly described and ascertained in
and by the following statement, that is to say :-
My invention has for its object an improvement in the method of fixing and applying
auxiliary brakes for tramway cars and other vehicles whereby increased efficiency and
greater simplicity is obtained and consists of a drum or drums either solid or built up
with wood, iron, or other approved materials fixed upon the axles of the vehicles with
suitable brake blocks hung in such a manner as to be easily applied to the drums.
These blocks I manipulate by means of levers, pulleys, or chains and by special ratchet
levers, whereby unlimited travel is obtained I am enabled to apply it effectually with
the exertion of less manual force than is the case with other kinds of brakes.
In order that my invention may be clearly understood and more easily carried into
practice I have appended hereunto two sheets of drawings upon which I have fully
illustrated! the application of my said improvements to an ordinary tram car propelled
by an engine and from which the application to other vehicles will be readily
understood.
Figure 1 is an inverted plan of one end and the centre of an ordinary tram car A
and engine B with my improved auxiliary brake attached thereto.
Figure 2 is a longitudinal sectional elevation of the same.
Figure 3 is a front elevation of the operating wheel M.
Figure 4 is a similar sectional elevation to Figure 2 but shewing a modification in
the arrangement of the various parts.
of
In carrying my invention into effect I fix the drums E & E' upon the ordinary
axles F of the tram car A. These drums E and E' may be either solid or built up
wood iron or other approved materials and are acted upon as hereafter described by
the brake blocks H and H which are in turn hung by the supports h¹ Figure 2 from
any convenient part of the vehicle support such as the brackets a' on the bogey
carriage A².
Pivoted to one of the supports
is connected at its lower end to the
ro 627
is the lever ' which by means of the rod /³
brake block on the other axle so that as the

page_text: lever is drawn in the direction of the arrow the block His pressed tightly against
the drum E where it forms a stationary pivot froin which the lower end of the lever h*
forces the brake block H against the drum E. The lever is connected with the
pivoted lever Kat & by the rod Figure 1 the lever K being in turn operating by
the rod m and chain from the operating and wheel L which is placed in
a convenient position on the platform at the side of the door A of the car
Figure 3. Both ends of the car are similarly arrange and thus by the application
of the hand wheel M the chain is wound upon the barrel m³ the rod, m
being drawn in the direction of the arrow W the turning the lever K upon
its vol and applying the brake as before described by means of the connecting rof k².
The ratchet wheel N is fixed to the lever K and is engaged by the pawls and n
thas permanently fixing the brake in operation until such time as it may be released
by disconnecting the pawls and from the ratchet who N which may be offected
by the hane For additional security the rack is provide upon the operating
rod me having the powl m³ engaging th rawith th han to being provided for the
purpose of releasing the rod again. The spring O is provided for keeping the brake
off in its normal condition.
It will be noticed that if the engine coupling becomes several that the engine
itself would apply the brake by means of the rod P and chain which connect
the end of the lever K with the engine so that upon the engine leaving the ear the
lover K and brakes are operated in an oxartly similar way to that when operated by
the rods m the brakes being still retained in operation in the same minuer after the
chain p² has been broken.
I may vary the arrangement of the rols levers and rat hots as for instance 1 may
in place of the hand wheel provide the lover R. Figure and ratchet wheel in place
of the rack m while in place of the ratchet wheel N 1 may provide the ruck 4ª and
pawl 4ª as also seen in Figure 4.
Laving now particn'arly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
An improved auxiliary brake for tramway our and other vehicles substantially as
herein set forth and as shewn upon the drawing.
Dated this 3 th August 1890.