wheels of Kanway Cars, naving Chilled and Unchilled Parts in the Face thereof.
Year: 1886

page_text: wheels of Kanway Cars, naving Chilled and Unchilled Parts
in the Face thereof.
I, JOHN JOSEPH LAPPIN of the City of Toronto, in the County of York in the
Province of Ontario, in the Dominion of Canada, Gentleman, 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:-
My invention relates to a process which I have found after numerous experiments
to be a great improvement on the process previously known and practised in this
manufacture.
.
It consists in a novel mode of casting and chilling simultaneously portions in the
face of the shoe with its face downwards.
In the accompanying drawings.
Fig. 1 is a side view of the pattern from which a
shown as laid upon a follow-board with its face up.
front removed, and bottom board above the same.
brake shoe is made, and is
It also shows a flask with
Fig. 2 is a side view of the pattern, with the flask turned over, and the face of
the pattern down, the cope is also shown on the top of the flask, and formed
therein is the gate for running the molten metal in the mould. The fronts of
these parts are also removed.
Fig. 3 is a plan view of the flask showing the mould prepared to receive the
molten metal, when the cope is replaced and clamped thereon, which was taken off
to withdraw the pattern.
Similar letters of reference indicate the same parts in all the views as in this
specification.
A represents the pattern of the shoe from which pattern the mould is made in
the sand, and is shown as laid upon a follow-board B, with its face up. In the face
of the pattern are several recesses C, into which recesses certain pieces of metal D
are placed; a flask E is placed upon the follow-board, and sand F filled therein,
and packed and rammed between the pieces of metal D, and filled to the top of the
flask, closely packed and smoothed off; a bottom board G is placed on the flask
and clamped thereto and turned over. The follow-board B is now removed. The
cope or upper half of the flask marked E¹ is now placed on the lower half E, and
nli...מ

page_text: filled with sand and rammed, and a gate G for running the molten metal into
the mould is formed in the ramming thereof. The gate pin by which the gate
is formed is now removed, and the cope E¹ taken off. The pattern A is now
carefully withdrawn from the mould, when the pieces of metal D remain therein
with their faces up and projecting above the floor of the mould. The mould is
now complete; the cope El is replaced on the flask E and clamped and is now
ready for the molten metal being poured therein, due care having been taken in
ventilating the mould for the escape of air or gas therefrom in running the molten
metal in the mould, and in this operation the heavier metal always falls to the
bottom, and by this mode of forming the mould becomes the face of the shoe.
The impure metal rising to the top and forms the back of the shoe.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
1. A process for the casting of brake shoes having chilled and unchilled parts in
the face thereof, and cast in the sand with the face down, so that the heavier metal
falls to the bottom of the mould, and becomes the face of the shoe, and the impure
and lighter metal rises to the top and becomes the back of the shoe as specified and
shown.
'
2. The process of casting a brake shoe. First, by laying a pattern A, upon a.
follow-board B, with its face up, in which there are several recesses C, and placing
certain pieces of metal D in the recesses C; and placing a flask E on the follow-
board enclosing the pattern, with the pieces of metal, and filling sand therein, and
packed and rammed around the pattern and between the pieces of metal D, and
filled to the top of the flask well packed and smoothed off; Second, by laying a
bottom-board G, on the flask E and clamping it thereto and turning over the flask;
Third, the follow-board B is now removed and the upper half of the flask E, or
cope marked El is now placed on the lower half E and filled with sand and
rammed, and the gate G¹ formed in the ramming thereof; Fourth, the gate pin is
now removed, and the cope taken off, and the pattern A withdrawn from the
mould, the pieces of metal D, remaining therein with their faces up; Fifth, the
mould is now complete; the cope E is to be replaced on the flask E and clamped
and is then ready for the molten metal being poured therein, substantially as shown
and described.