Improvements in or relating to the Manufacture of Brake Shoes, and Apparatus therefor.
Year: 1895

page_text: Date of Application, 1st Apr., 1895
Complete Specification Left, 20th June, 1895-Accepted, 29th June, 1895
Improvements in or relating to the Manufacture of Brake Shoes,
and Apparatus therefor.
A communication from JOSEPH HARCOURT PARKINSON, of Roxborough Street,
in the City of Toronto, Province of Ontario, Dominion of Canada, Gentleman.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Chartered Patent Agent, do hereby declare the nature of this invention to be as
follows:-
--
In the manufacture of brake shoes, the cost of the manufacture is considerably
higher than what it should be, owing to the present complicated slow and
tedious method of arranging the moulds for casting, the brake shoes; and this
invention relates to a certain new and useful process and apparatus whereby a
considerable saving of time in the construction of moulds can be effected, with
a consequent saving in the cost of manufacture of the brake shoes, and the
invention consists, essentially, of arranging a series of shoe patterns on a bar
and providing a drag of sufficient size to receive the series of shoe patterns and
fitting the drag with a metallic cope which will serve the dual purpose of a
follow board and cope, in order that the follow board may be entirely dispensed
with in the construction of the moulds, and a saving effected of approximately
two-thirds of the moulder's time.
The drag is of ordinary size and shape. Supported in the drag bar is a bar to
which are fastened a series of shoe patterns. Between each adjacent pair of shoe
patterns is an interval and between the under side of the shoe patterns and the
bottom of the drag is a space. The intervals between each adjacent pair of shoe
patterns are of a uniform size, and between the ends of the shoe patterns, and the
sides of the drag are spaces and between the outer sides of the end shoe patterns
and the ends of the drag are spaces. Connected to each end of the drag is a lug
and extending upwardly from each of the lugs is a pin. The lugs are located
substantially at the middle of each end and the pins pass through the ends of the
bar in order that the bar may always be in its proper position and the shoe
patterns in the proper relation to the box when they are within the drag. Fitted
to the top of the drag is a metallic cope. Each end of the cope is provided with
an outwardly extending lug corresponding in position with the lugs and passing
through these lugs are the above named pins. The metallic cope completely covers
the top of the drag and the under side of the cope is curved to correspond with the
curvature of the shoe patterns in order that the under side of the cope will fit
snugly against the top of the shoe patterns and make a perfect bearing for the
moulding sand packed into the intervals between the shoe patterns so that a
perfect clearance will be formed at the top of the intervals for the removal of the
shoe patterns. In the top of the cope are a series of lateral openings which
correspond in size and location with the size and location of the shoe patterns and
between each adjacent pair of openings is a metallic bar or strip and these metallic
strips correspond in size and location with the size and location of the interval
between each adjacent pair of shoe patterns. Between the extreme edge of the
cope and the openings in a metallic strip corresponding in size with the space and
between the opposite edge is a metallic strip corresponding in size with the space
and at each end of the cope are metallic strips corresponding with the spaces to
form a perfect bearing for the moulding sand in the spaces.

page_text: In the
Surrounding each of the openings is an upwardly extending metallic flange in
order that there will be sufficient depth to the metallic cope between the top of the
flange and the under side of the cope to receive and securely hold the moulding
sand within the openings. When it is desired to employ chills in conjunction with
the cope, one side of each of the openings is fitted to receive a metallic plate. To
each of the plates are connected a series of chills. These chills may be of any
suitable size or shape in order to throw the required chill into the shoe. By
securing the chills to a plate attaching this plate to the cope, it is possible to
render the chills interchangeable, and by this means make any style of chilled shoe
and also by securing the chills to a plate which is removably connected to the
cope, it is possible to entirely remove the chills and cast a soft metal shoe.
operation of the invention, the shoe patterus are placed within the drag. The cope J
is then fitted to the drag and the box is turned upside down. The moulding
sand is placed in the box from the under side of the drag and is packed into the
intervals between the shoe patterns and into the above named spaces and into the
bottom of the drag, the cope remaining in place and making a perfect bearing on
all of the moulding sand in the intervals and spaces. After the moulding sand
has been packed into the intervals and spaces and the bottom of the box is filled
level with the lower edge of the drag, the box is turned upside down." After the
box has been turned upside down the moulding sand' is filled into the openings in
the cope the shoe patterns making a perfect bearing for the bottom of the moulding
sand in these openings. When the openings have been packed full of moulding
sand: the cope is removed to permit of the withdrawal of the patterns from the
drag. The cope is then replaced and the metal is poured into the box through the
gates. To divide the flow of the metal in the drag a metallic plate is placed across
the: middle of the box, passing through the said in the middle interval. The
metal then flows into the spaces left by the shoe patterns. Above each of the
spaces left by the shoe patterns is one of the before-mentioned' openings and as
the moulding sand in these openings is level with the under side of the cope, the
metal will rise in the spaces left by the shoe patterns until it comes in contact with
the bottom of the sand in the openings. The metallic strips are above the sand
walls between the mould spares, and form a tight contact with the sand walls. It
might also be stated that when packing the sand into the box whilst the shoe
patterns are within the drag the cope forms a perfect bearing on all the moulding
sand within the drag and allows of a perfect clearance for the removal of the shoe
patterns when being withdrawn.
.
1
By fitting each of the openings in the cope with a series of chills it is possible to
throw a chill of any desired shape into the pattern at any desired point.
Dated this 1st day of April 1895.
BOULT & WADE,
Agents for the Applicant.
Improvements in or relating to the Manufacture of Brake Shoes,
and Apparatus therefor.
A communication from JOSEPH Harcourt PARKINSON, of Roxborough Street,
City of Toronto, Province of Ontario, Canada, Gentlenian.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Chartered Patent Agent, 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 :-
In the manufacture of brake-shoes, the cost of the manufacture is considerably

page_text: the moulds, and a saving effected of approximately two-thirds of the moulder's
time; the invention being hereinafter more fully set forth and more particularly
pointed out in the claims;
Figure 1 is a perspective view of the box.
Figure 2 is a perspective view of the drag and shoe patterns.
Figure 3 is a perspective view of the drag and moulds.
Figure 4 is a perspective view of the cope.
Figure 5 is a perspective view of one of the openings in the cope.
Like letters of reference refer to like parts throughout the Specification and
drawings.
The drag A is of ordinary size and shape. Supported in the drag bar A is a
bar B to which are fastened a series of shoe patterns C. Between each adjacent
pair of shoe patterns C is an interval D and between. the under side of the shoe
patterns C and the bottom of the drag A is a space. The intervals D between
each adjacent pair of shoe patterns C are of a uniform size and between the ends
of the shoe patterns C and the sides of the drag A are spaces F F respectively,
and between the outer sides of the end shoe patterns and the ends of the drag A
are spaces G G¹ respectively. Connected to each end a' of the drag A is a lug H
and extending upwardly from each of the lugs H is a pin 1. The lugs Hare
located substantially at the middle of each end a' and the pins I pass through the
ends of the bar B, in order that the bar. may always be in its proper position and
the shoe patterns in the proper relation to the box when they are within the drag.
Fitted to the top of the drag A is a metallic cope J. Each end of the cope is
provided with an outwardly extending lug K corresponding in position with the
Ings H, and passing through these lugs K are the above-named pins I. The
metallic cope completely covers the top of the drag A and the under side of
the cope Jis curved to correspond with the curvature of the shoe patterns C, in
order that the under side of the cope will fit snugly against the top of the shoe
patterns and make a perfect bearing for the moulding sand packed into the
intervals D between the shoe patterns so that a perfect clearance will be formed at
the top of the intervals D for the removal of the shoe patterns C. In the top of
the cope Jare a series of lateral openings L which correspond in size and location
with the size and location of the shoe patterns C and between each adjacent pair of
openings L is a metallic bar or strip M and these metallic strips correspond in
size and location with the size and location of the interval D between each
adjacent pair of shoe patterns C. Between the extreme edge of the cope J
and the openings L is a metallic strip N corresponding in size with the space F,
and between the opposite edge 7 is a metallic strip O corresponding in size with the
space F, and at each end of the cope J are metallic strips P corresponding with
the spaces G G to form a perfect bearing for the moulding sand in the spaces FF¹
and G G¹.
Surrounding each of the openings L is an upwardly extending metallic flange in
order that there will be sufficient depth to the metallic cope J between the top of
the flange Q and the under side of the cope J to receive and securely hold
the moulding sand within the openings L. When it is desired to employ chills
in conjunction with the cope, one side of each of the openings L is fitted to
receive a metallic plate R. To each of the plates R are connected a series of
ohills S. These chills S may be of any suitable size or shape in order... to

page_text: throw the required chill into the shoe. By securing the chills S to a plate R
and attaching this plate R to the cope it is possible to render the chills inter-
changeable, and by this means make any style of chilled shoe and also by
securing the chills to a plate which is removably connected to the cope it is possible
to entirely remove the chills and cast a soft metal shoe. In the operation of the
invention, the shoe patterns C are placed within the drag A. The cope J is then
fitted to the drag A and the box is turned upside down. The moulding sand is
placed in the box from the under side of the drag A and is packed into the
intervals D between the shoe patterns C and into the spaces F F and spaces G G¹
and into the bottom of the drag the cope J remaining in place and making a
perfect hearing on all of the moulding sand in the intervals and spaces. After the
moulding sand has been packed into the intervals D and spaces G G and the
bottom of the box is filled level with the lower edge of the drag, the box is turned
upside down. After the box has been turned upside down, the moulding sand is
filled into the openings L in the cope J the shoe patterns C making a perfect
bearing for the bottom of the moulding sand in these openings L. When the
openings L have been packed full of moulding sand the cope is removed to permit
of the withdrawal of the patterns from the drag. The cope is then replaced and
the metal is poured into the box through the gates T. To divide the flow of the
metal in the drag A a metallic plate is placed across the middle of the box passing
through the sand in the middle interval D. The metal then flows into the spaces
left by the shoe patterns C. Above each of the spaces left by the shoe patterns C
is one of the openings L and as the moulding sand in the openings L is level with
the under side of the cope J the metal will rise in the spaces left by the shoe
patterns until it comes in contact with the bottom of the sand in the openings L.
The metallic strips M are above the sand walls U between the mould spaces and
form a tight contact with the sand walls. It might also be stated that when
packing the sand into the box whilst the shoe patterns C are within the drag, the
cope forms a perfect bearing on all the moulding sand within the drag A and
allows of a perfect clearance for the removal of the shoe patterns C when being
withdrawn.
By fitting each of the openings L in the cope J with a series of chills S it is
possible to throw a chill of any desired shape into the pattern at any desired
point.
Having now particularly described and ascertained the nature of the said
invention as communicated to me by my foreign correspondent, and in what manner
the same is to be performed I declare that what I claim is ;-
1. A process for moulding brake shoes consisting of arranging a shoe pattern
within the drag and providing the drag with a cope which will form a perfect
bearing for the moulding sand then filling the drag with moulding sand and packing
it around the shoe pattern against the cope then removing the shoe pattern and
pouring the molten metal into the mould substantially as specified.
2. A process for moulding brake shoes consisting of arranging a shoe pattern
within the drag and providing the drag with a cope which will form a perfect
bearing for the moulding sand and forming in the cope an opening corresponding
in size and location with the shoe pattern and filling the drag with moulding sand
and packing it around the shoe pattern against the cope and filling the opening in
the cope with moulding sand and parking tight against the shoe pattern then
removing the cope and shoe pattern then replacing the cope and pouring the
molten metal into the mould substantially as specified.
3. A process for moulding brake shoes consisting of arranging a series of shoe
patterns within the drag with an interval between each adjacent pair of shoe
patterns and providing the drag with a cope which will form a perfect bearing for
the moulding sand having an opening above each shoe pattern each opening
corresponding in size and location with its respective shoe pattern and filling the
drag with moulding sand packing it around the shoe patterns and into the intervals

page_text: between them and tightly against the under side of the cope and filling the
openings in the cope with moulding sand then removing the cope and shoe patterns
and then replacing the cope and pouring the molten metal into the mould
substantially as specified.
4. A process for moulding brake shoes consisting of arranging a series of shoc
patterns within the drag and providing a cope which will form a perfect bearing
for the moulding sand having a series of openings corresponding in size and location
with the size and location of the shoe patterns and providing each of the openings
in the cope with a series of chills and packing the sand into the drag and into the
intervals between and around the shoe patterns and tightly against the under
side of the cope then filling the openings in the cope with moulding sand then
removing the cope and shoe patterns then replacing the cope and pouring the
molten metal into the moulds substantially as specified.
5. A process for moulding brake shoes consisting of arranging a shoe pattern
within the drag and providing the drag with a cope which will form a perfect
bearing for the moulding sand and forming in the cope a series of openings
corresponding in size and location with the shoe patterns and removably attaching
to the opening in the cope a series of chills which come in contact with the shoe
patterns and packing the moulding sand into the drag around and against the shoe
patterns and filling the openings in the cope with moulding sand then removing the
cope and shoe patterns then replacing the cope and pouring the molten metal into
the mould substantially as specified.
6. The process of and apparatus for moulding brake shoes consisting of arranging
a series of shoe patterns within the drag with an interval between each adjacent
pair of shoe patterns and providing the drag with a cope which will form a perfect
bearing for the moulding sand having an opening above each shoe pattern each
opening corresponding in size and location with its respective shoe pattern and
filling the drag with moulding sand packing it around the shoe patterns and into
the intervals between them and tightly against the under side of the cope and
filling the openings in the cope with moulding sand then removing the cope and
shoe patterns and then replacing the cope and pouring the molten metal into the
mould substantially as specified.
7. The process of and apparatus for moulding brake shoes consisting of arranging
a shoe pattern within the drag and providing the drag with a cope which will form
a perfect bearing for the moulding sand and forming in the cope a series of openings
corresponding in size and location with the shoe patterns and removably attaching
to the opening in the cope a series of chills which come in contact with the shoe
patterns and packing the moulding sand into the drag around and against the shoe
patterns and filling the openings in the cope with moulding sand then removing the
cope and shoe patterns then replacing the cope and pouring the molten metal into
the mould substantially as specified.
8. An apparatus for moulding brake shoes comprising the following elements ;-
The drag A bar B shoe patterns C lugs H lugs K pins I cope J lateral openings L
metallic plates R chills S and gates T substantially as described and for the
purpose specified.
9. In an apparatus for moulding brake shoes the combination of the drag A
bar B shoe patterns C spaced on and connected to the bar B lugs H lugs K pins I
adapted to pass through lugs 11 and lugs K cope J spaced and curved to
correspond with the curvature of the patterns C and spaces between the same
lateral openings I shaped and located as specified metallic plates R chills S and
gates T substantially as described and for the purpose specified.
In 1905
BOULT & WADE,
Agents for the Applicant.