Improved Construction of Brake Block and Shoe for Brakes of Vehicles.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improved Construction of Brake Block and Shoe for Brakes of
Vehicles.
I, WILLIAM RENDALL, of Castle Street, Kingsland, London, Wheelwright, do
hereby declare the nature of this invention to be as follows:-
The object of this invention is to construct a brake block and shoe in such
manner that the block may be formed of a number of pieces easily fitted in place
and perfectly bound with one another when in position, the remains of each or
all of the pieces being easily removable when the block is worn and it is desired
to make a new one, also the block may be built up to any height to suit the
distance the wheel rim is from the ordinary position of the brake shoe.
For the purpose of my invention, I form the brake shoe or a block thereon with
dovetail or similar shaped recesses transversely across its face and these may
slightly taper towards one side. Into these tapered dovetailed recesses I fit blocks
of double dovetailed shape also slightly tapered to one end, if desired these forming
dovetailed recesses between them at those parts projecting from the shoe, which
recesses can be filled in with corresponding shaped pieces of wood or other
material so as to make a smooth or level surface on the working face of the brake
block, or they may have other double dovetailed shaped blocks when it is required
to make the block thicker.
By this invention, the brake block surfaces when worn may be easily made good
again by the driver or other attendant, all that has to be done is to drive out the
worn pieces and fit in new ones, the worn pieces serving to fill the intermediate
recesses on the working face of the block. The pieces can be easily carried in any
part of the vehicle for fitting in as desired.
The dovetail recesses are made tapering in their lengths to ensure a firm grip
of the blocks to the recesses and to each other when driven home by, say, a hammer,
and the blocks may also be made tapering in their length, if so desired.
Dated this 20th day of Anil 1000
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said William Rendall.

page_text: be performed to be particularly described and ascertained in and by the following
statement:-
The object of this invention, is to construct a brake block and shoe in such
manner that the block may be formed of a number of pieces easily fitted in place
and perfectly bound with one another when in position, the remains of each or
all of the pieces being easily removable when the block is worn and it is desired
to make a new one, also the block may be built up to any height to suit the
distance the wheel rim is from the ordinary position of the brake shoe.
My invention will be more clearly understood by reference to the annexed draw-
ing. A is the brake shoe, the back of which is formed with a recess or cross
channel for the reception of a strap by which it can be secured to the lever arrange-
ment for foot or hand action in the well known manner. The face of the shoe
has dovetailed slots either taper or parallel formed in it across the front into which
one portion of X or double dovetailed or equivalent shaped pieces of wood metal
or other materials B, B, or a combination of such can be forced and become fixed,
said double dovetailed pieces B having parallel sides or faces for their full length,
or they may be slightly tapered, or the entry ends be shaped for readily being
hammered in.
Only half or about half the depth of the blocks B, B, find a lodgment in the
grooves of the shoe A, the remainder C, C, being exposed and projecting so that
the spaces between each pair can have portions D, D, of other correspondingly
shaped blocks forced in and with their other portions E, E, exposed, each series
of blocks being so arranged that additional strips of double dovetailed form can
be driven in to build up the face of the brake to any desired extent to suit the
tyre or rim of the wheel the brake has to act upon, but if desired especially with
the brakes of light vehicles where there is little wear on the brake some of the
strips can be severed along the middle of their length, such as I show at F to
present a flush face to the brake for equal action on the wheel for the full depth
of the brake, but if desired the intervening strips F can be dispensed with because
in practice although there may be gaps between the strips E, E, there is always
found sufficient working face for surface bite against a wheel to brake it.
The double or single dovetailed strips can be of any kind of wood, or other
material, or compounds, or be used in conjunction therewith to constitute my
improved brake, such as from long strips capable of being cut into suitable
lengths to fit the width of the shoe or back A.
By this invention, the brake block surfaces when worn may be easily made good
again by the driver or other attendant, all that has to be done is to drive out the
worn pieces and fit or drive in new ones, the worn pieces serving to fill the inter-
mediate recesses on the working face of the block. The pieces can be easily
carried in any part of the vehicle for fitting in as desired.
Although I have shown the grain of the strips of wood running transversely,
the wood can be cut for the wheel to run end on of the grain.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed I declare that what
I claim is
1. The improved construction of brake shoe as set forth, in which dovetail
grooves are formed in the face for the reception and utilisation of short pieces or
lengths of wood, metal, or other materials of double dovetailed formation, and into
which other double or single dovetailed shaped pieces can be lodged to act as the
brake proper for pressure against wheels of vehicles substantially as represented
on the drawing.
2. As my improved construction of brake block and shoe, the article represented
on the annexed drawing consisting of affixable pieces set transversely in one

page_text: another and in the shoe A respectively to build up the brake proper to the desired
thickness, as described.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said William Rendall.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said William Rendall.