Improvements in Brake Shoes
Year: 1895

page_text: Date of Application, 3rd May 1895-Accepted 27th July 1895
Improvements in Brake Shoes
I, ARCHIBALD BRAKE, residing at 327 Clinton Street, in the City of Toronto
in the County of York and Province of Ontario, Mouldei, 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 certain new and useful improvements in brake shoes, and
the object of the invention is
To provide brake shoe with sufficient soft metal to properly grip the running
face of the wheel when the brakes are applied, and also to provide a brake
shoe with sufficient chilled metal to prevent the rapid cutting away on wearing
of the shoe by the running face of the wheel, and to so arrange the shoe that it
will true up the running face of the wheel, and that that portion of the shoe nea
the flange of the wheel will be entirely soft metal, in order that the shoe will not
wear the tread of running surface of the wheel and will not cut into the flange
and the invention consists of arranging in the shoe a series of chills of
substantially triangular form, the bases of which are located along what will
normally be the outer edge of the shoc with the apex of each triangle extending
little beyond the middle of the shoe leaving a body of soft netal along the inne
edge of each shoe the whole device being constructed as hereinafter more fully set
forth and more particularly pointed out in the claims
In the drawings
1
1
Fig 1 is perspective view of one of the brake shoes showing the arrangement
of the soft metal parts and the chilled metal parts
Fig 2 is a perspective view of a similar shoe showing a modified shape of the
chilled metal parts
Like letters of reference refer to like parts throughout the Specification and
drawings
The shoe A is of the usual size and shape and consists of a series of chilled parts a
and soft metal parts a¹ respectively, preferably formed integially with each other
Each of the chilled parts a is of substantially a triangular shape with its base B
along what will normally be the outer edge of the shoe, and its apex b extending
slightly across the middle of the shoe The chilled metal parts a are preferably
four in number arranged equi-distant from each other with their bases B located
along the outer edge of the shoe A Between each of the chilled metal parts a
along the outer edge of the shoe is a narrow strip C of chilled metal Between the
chilled metal parts a and the chilled metal strip C and the opposite or innei
edge of the shoe A are the soft metal parts a¹ By constructing the shoe with the
chilled metal paits a arranged substantially in a triangular form with soft metal
between them the edges of the chills will be at an angle to the rotation of the
wheel, offering substantially no cutting surface to the rim of the wheel
arranging the shoe in this manner the chilled metal parts can, under no circum-
stances, come in contact with the flange of the wheel thus avoiding the possibility
of the shoe cutting into the flange Also by airanging the shoe in this manne
there will be little or no chilled metal on the tread of the wheel, as the chilled metal
parts come in contact with the outer edge of the rim of the wheel and have a
tendency to true up the rim of the wheel between the outer edge and tread
Fig 21 have shown the apex of the triangle to be slightly rounded instead of
coming to a sharp point as shown in Fig 1 With the exception of the rounding
By

page_text: of the apex there is no difference whatever in the construction of the shoes shown
in Figs 1 and 2 A shoe con tructed on this principle will give the best results
both for wear and for fictional grip on the rim of the wheel
Having now particularly described and ascertained the nature of my said inven
tion I hereby declare that what I claim is
1 Ihe brake shoe herein before de cribed and illustrated in Fig 1 of the
drawings
2 The brake shoe hereinbefore described and illustrated in Fig 2 of the
drawings
3 A brake shoe consisting of a series of chilled metal parts of substantially a
tangular form having their bases located along one edge of the shoe with the
apex of the triangle extending across the middle of the shoe, and soft metal between
the chilled metal parts and the sides and ends of the shoe, substantially as
specified
4 A brake shoe consisting of a series of chilled metal parts of substantially a
tangular form having their bases located along one edge of the shoe with the
apex of the triangle rounded and extending across the middle of the shoe, and soft
metal between the chilled metal parts and the sides and ends of the shoe substan-
tially as specified
0 A brake shoe consisting of a series of chilled metal parts of substantially a
triangular form having their bases located along one edge of the shoe with the
apex of the triangle extending across the middle of the shoe, a chilled metal
strip connecting together the bases of the chilled metal parts along the same edge
of the shoe as the bases, and soft metal between the chilled metal parts and the side
and ends of the shoe, substantially as specified
Dated this 3rd day of May A. D 1895
HUGHES & YOUNG,
23 Coleman Street, London, EC, Agents