Year: 1899

page_text: GEORGE MICHAEL RICHES, Azalea, Queens Road, Beccles, Suffolk, Foundry
Foreman, do hereby declare the nature of this invention to be as follows:
-
This invention consists of a machine for pressing the sand moulds of metal
founders.
The whole operation being performed by the movements of a single lever
through a double crank shaft connected directly by two rods to the platen above.
When the moulding box is filled and ready to be pressed the lever is pulled
forward, which allows the platen to come forward until directly over the mould
where its forward action is stoped by stops on one or both sides of the table, to
which stops it is kept by a weighted chain or spring; continuing the lever for-
ward and downward, the platen comes down and presses the mould.
The lever is then reversed which raises the platen until a projection on the
lever engages the rod connected to the platen and carries the latter backward
clear of the mould.
Dated this First day of September 1899.
GEORGE MICHAEL RICHES,
Azalea, Queens Road, Beccles, Suffolk.
Sand Mould Pressing Machine.
GEORGE MICHAEL RICHES, of "Azalea," Queens Road, Beccles, Suffolk, England,
Foundry Foreman, 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 a machine for pressing the sand moulds of metal
founders, its object being to reduce the time spent in moulding by applying the
instantaneous operation of the machine in place of the usual hand ramming,
and by the same operation the runner head can be formed. The novelty of this
invention relates to a machine in which a lever at one side is fixed to a double
crank-shaft running parallel to and near the base of the standard from side to
side of the machine, which said crank-shaft is connected directly to the platen
or presser above by a single or compound rod, link or bolt at each side of the
machine. Also in the upward or return stroke of the lever a catch on the same
engages the side rod or link, thereby, carrying back the platen or presser clear
277

page_text: of the mould, the same side rod being kept against the said catch by means of a
weighted chain or spring.
The machine can be made of any size to suit the work as shown in the accou
panying drawings.
Figure 1, is a front elevation, showing the lever and platen down.
Figure is a side elevation, showing the lever and platen down.
Figure 3, is a side elevation, showing the lever up and platen back.
Figure 4, is a front elevation of the double crank.
Figure 5, is a side elevation of the double crank and link.
In the above named figures-A is the stand or frame, consisting mainly of a
base A', table A2, also bearings A3 for the crank-shaft, preferably all cast in one
piece.
B is the operating lever. C is the double crank-shaft, 'C' studs to secure
lever B to crank-shaft, C crank journals.
D shows the connecting rods, terminated at one end by eyes to fit on crank
journals C, at the other end by threads and nuts, for adjusting the platen E.
The two connecting rods are braced together by the piece F to which is
fastened the weight W by means of a chain running over a pulley G, this
weight W keeps the platen E over the table A2 also the connecting rods D against
the stops H cast on the table A² except when held back by the lever B and the
catch on the same B2.
The lever B is stoped from going too far back by the end of the crank C com-
ing in contact with the projection I.
The weight W and chain and pulley G may be replaced by a spring.
In using the machine there are three distinct methods:
First With patterns and gates fixed to a plate.
Second With loose patterns on odd sides or blocks.
:-
Third When using either of the above, to press the boxes full or partly full
of sand.
When it is desirable to have the sand level with the edge of the box a filling
frame is used on the box, and a block which will pass in the filling frame is
fixed on the platen of the machine so that just sufficient sand is used to be level
with the box edge after being pressed.
When it is not necessary to fill the boxes, no block need be used on the platen
and no filling frame is required, the requisite quantity of sand being placed in
the box, a board which will pass into the box is laid on the sand and pressed in
by the platen. On either the above named block or board the patten runner head
is fixed which forms the required indent in the mould.
When using plates of patterns-place the plate between the two parts of the
box, press the sand in one side then turn the whole over and press the other side.
Pins should be fixed in the table A2 so that the boxes or blocks can always be
placed in approximately the same position.
When the box containing the sand is ready for pressing, the lever B is pulled
forward, which allows the platen E-urged by the weight W-also to come for-
ward until directly over the table A2 where its forward action is stoped by the
connecting rods D coming in contact with the stops H, the lever B continuing its
forward and downward motion brings the platen E downwards and presses the
mould between the table A2 and the platen E. The lever B is then reversed
which carries the platen upwards until the projection B³ on the lever B engages
the rod connected to the platen and carries the latter backward clear of the
mould, when the operation is complete.
In actual use the time saved in making moulds by this machine varies from
25% to 75% according to the class of work and the apparatus and methods
employed.
The chief advantages being as follows:-
Ramming or pressing done instantaneous.
More uniform

page_text: 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 sand mould pressing machine having a double crank-shaft connected
directly to the platen or presser by single or compound rods, links or bolts, sub-
stantially as described or illustrated in the accompanying drawings.
2. A sand mould pressing machine or the like, having the combination of parts
as herein substantially described or illustrated in the accompanying drawings.
Dated this Ninth day of April 1900.
GEORGE M. RICHES,
Applicant.