Improvements.in Brake Mechanism for Railway Trucks and the like.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements.in Brake Mechanism for Railway Trucks and the like.
I, WILLIAM ROBERT RENSHAW, of 47, Victoria Street, Westminster, in the
County of Middlesex, Engineer, do hereby declare the nature of this invention
to be as follows:-
This invention relates to putting on the brakes from either side of the truck.
The brakes are operated in any usual way from a transverse shaft. Spring levers
are fixed to the two ends of this shaft and these levers engage with the ordinary
racks or segments of teeth so that they can be retained in any position.
rigid levers pivotted to the ends of the shaft may be employed.
Or
In order to disengage the levers simultaneously from the teeth of the racks or
segments they are connected to the arms of a bell crank or other lever pivotted
to the shaft. When therefore the end of either lever is pulled outwards from
the truck to disengage it from the teeth a similar movement is given to the other
lever.
Improvements in Brake Mechanism for Railway Trucks and the like.
E, WILLIAM ROBERT RENSHAW, of 47, Victoria Street, Westminster, in the
County of Middlesex, Engineer, 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 relates to putting on the brakes from either side of the truck.
The brakes are operated in any usual way from a transverse shaft. Spring levers
are fixed to the two ends of this shaft and these levers engage with the ordinary
Or
racks or segments of teeth so that they can be retained in any position.
rigid levers pivotted to the ends of the shaft may be employed.
In order to disengage the levers simultaneously from the teeth of the racks or
segments they are connected to the arms of a bell crank or other lever pivotted
to the shaft. When therefore the end of either lever is pulled outwards from
the truck to disengage it from the teeth a similar movement is given to the other
lever.

page_text: It will be seen that by this arrangement the spring levers and their connecting
bell crank lever are always in the same plane whatever the position of the spring
levers.
The drawings show a truck made in accordance with this invention.
Figure 1 is a side clevation, Figure 2 a plan, and Figure 3 an end elevation.
Figures 4 and 5 show the brake mechanism.
a a¹ are spring levers fixed to the transverse shaft b, these levers engage with
segments of teeth c c so that they can be retained in any position. The arms d d
of a bell crank lever pivotted to the shaft bat e are connected to the levers a a¹
by links f f respectively. The brake blocks g g are operated by means of
levers hh pivotted to the shaft b.
In order to operate the brake one of the spring levers is pulled outwards from
the truck by which movement both the levers are freed from the segments of
teeth cc; the lever is then pressed downwards turning the shaft and pressing
the brake blocks g g against the wheels.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I wish it to be
understood that I am aware of the Patents granted to Thorvald Klein, No. 7270,
A.D. 1891, Fred Platt, No. 4726, A.D. 1896, and Haydon Parker, No. 5099,
A.D. 1896, and I do not claim anything described or claimed therein, but I declare
that what I claim is:
1. In brake mechanism for railway trucks and the like, spring levers at each
side of the truck fixed to a shaft to which the levers for operating the brake
blocks are pivotted, the spring levers being connected together by a bell crank
lever also pivotted to the shaft, substantially as described.
2. Brake mechanism substantially as described and illustrated in the drawings.
Dated this 7th day of Santamhan 1000