An Improved Brake Applicable to Wagons, Lorries, Vans, and other Vehicles Employed on Common Roads.
Year: 1888

page_text: Date of Application, 27th Sept., 1888
Complete Specification Left, 21st June, 1889-Accepted, 27th July, 1837
PROVISIONAL SPECIFICATION.
An Improved Brake Applicable to Wagons, Lorries, Vans, and
other Vehicles Employed on Common Roads.
WO, JOHN HARROW and GEORGE GRAY both of the firm of Gray, Harrow and
Company, 14 South Charlotte Street, in the City and County of Aberdeen North
Britain, Wheelwrights and Smiths do hereby declare the nature of this invention
to be as follows:-
This Invention, which relates to an improved brake applicable to wagons, lorries,
vans and other vehicles employed on common roads, consists of a pair of arms or
hangers with stud; at their lower ends which are fixed to the underpart of the
framing of the wagon, lorry, van or other vehicle to which the said brake is applied.
Upon each of these studs there is carried an arm formed at its outer end with a palm
or shoe for carrying a brake block and the inner end of one of which is formed with
a longitudinal slot whilst the inner end of the other arm is formed with a circular
hole through which a bolt passes. This bolt also passes through the inner end of a
link whose outer end is coupled to a nut that is worked backwards and forwards by
means of a screw operated by a hand wheel. This screw is carried in bearings formed
in hangers which are also attached to the under framing of the wagon, lorry, van or
other vehicle. By turning the hand wheel and screw in one direction the link con-
necting the screw nut with the inner ends of the brake levers or arms draws them
to such an angle to each other that the brake blocks are applied whilst by turning the
screw in the opposite direction the brake blocks are withdrawn from the wheels of
the vehicle.
The brake constituting this Invention as hereinbefore described may be fitted to
the front, back, or side of the vehicle and for heavy wagons it is preferably placed
on the side thereof so as to enable the driver to have full command both of tho
horses and the brake.
Dated this 56th day of Santambor 1988
ST. JOHN V. DAY,
115, St. Vincent Street, Glasgow, Petitioners' Agent.
COMPLETE SPECIFICATION.
An Improved Brake Applicable to Wagons, Lorries, Vans, and
other Vehicles Employed on Common Roads.
We, JOHN HARROW, and GEORGE GRAY, both of the firm of Gray, Harrow and
Company, 14 South Charlotte Street, in the City and County of Aberdeen, North
Britain, Wheelwrights and Smiths, 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 which relates to an improved brake, applicable to wagons, lorries,
vans and other vehicles employed on common roads, consists of a pair of arms or
hangers with studs at their lower ends which are fixed to the underpart of the
framing of the wagon, lorry, van, or other vehicle to which the said bruke is applied.
Upon each of these studs, there is carried an arm formed at its outer end with a palm
or shoe for carrying a brake block, and the inner end of one of which is formed with
a longitudinal slot, whilst the inner end of the outer arm is formed with a circular
hole through which a bolt passes. This bolt also passes through the inner end of a
link whose outer end is coupled to a nut that is worked backwards and forwards by
means of a screw operated by a hand wheel. This screw is carried in bearings formed
in hangers, which are also attached to the under framing of the wagon, lorry, van, or

page_text: other vehicle. By turning the hand wheel and screw in one direction the link con-
necting the screw nut with the inner ends of the brake levers or arms draws them to
such an angle to each other that the brake blocks are applied, whilst by turning the
screw in the opposite direction the brake blocks are withdrawn from the wheels of
the vehicle.
In order that our said Invention may be properly understood and readily carried
into effect we will now proceed to describe the drawing hereunto annexed, the said
drawing being a perspective view of part of underside of a lorry having brake
arrangement attached. The two brake levers A, B, are shewn pivoted upon the studs
of the brackets D, which are bolted to the underside of the wagon; the brake blocks
are shewn at E. By giving a turn to the hand wheel F, the screw shaft f, is rotated
and the nut G, being prevented from rotating, by its connection with the inner ends
of the brake levers, through the connecting rod H, is caused to travel along the screw
-shaft, and in so doing, either draws in or pushes out the two levers and thus puts on
or takes off the Brake blocks. In order to allow the required movement of the two
brake levers we provide the inner end of the one lever with a slot a, within which the
pin L, of the other lever works, and it is to this pin that the power
given from the
travelling screw; we form the connecting rod H, with a forked end h, which
embraces the inner ends of the two brake levers, the said forked formation also
allowing of the different positions which the brake levers take up, when they are
putting on and taking off the blocks.
We have shewn the brakes operated by one hand wheel at the one side of the
vehicle, but it is to be understood that we may employ a handle at both sides of the
vehicle if found desirable, in which case we would extend the screw shaft f, right
across the vehicle. As a further modification of our Invention, we may employ a
pair of travelling nuts (in lieu of one as shown in the drawings,) each having a
connecting rod to the pin L, which actuates the brake lovers; in this case the shaft
would be provided with right and left handed screws.
It is also to be understood that the hand wheel may be situated in front of, or at
the rear of the vehicle in lieu of at the side as hereinbefore described.
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 we
claim is.
First. In brakes for wagons, lorries, vans, or other vehicles employed on common
roads, the general arrangement and construction of parts for actuating the brake
blocks by lovers operated through the medium of a screwed spindle, and travelling
nut, substantially as and for the purposes hereinbefore set forth with reference to the
accompanying drawings.
Second. The arrangement and construction of the lovers A, B, actuated by the
travelling nut G, through the connecting rod H, or any modification of the said
arrangement such as by the employment of a pair of nuts, actuated by right and
left handed screws, substantially as and for the purposes specified with reference to
the accompanying drawings.
Dated this 20th day of June 1889.
JOHNSONS,
115, St. Vincent Street, Glasgow, Applicants' Agents.