IMPROVE- MENTS IN MACHINERY FOR THE MANUFACTURE OF MOULDS FOR CASTING METALLIC WHEELS
Year: 1865

page_text: LETTERS PATENT to Thomas Joseph Perry, of Highfields, near Bilston,
in the County of Stafford, Ironfounder, for the Invention of "IMPROVE-
MENTS IN MACHINERY FOR THE MANUFACTURE OF MOULDS FOR CASTING
METALLIC WHEELS."
Sealed the 8th May 1866, and dated the 17th November 1865.
PROVISIONAL SPECIFICATION left by the said Thomas Joseph Perry at
the Office of the Commissioners of Patents, with his Petition, on
the 17th November 1865.
I, THOMAS JOSEPH PERRY, of Highfields, near Bilston, in the County of
Stafford, Ironfounder, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN MACHINERY FOR THE MANUFACTURE OF MOULDS FOR CASTING
METALLIC WHEELS," to be as follows:-
My Invention consists of the arrangement or combination of the parts of
machinery for the manufacture of moulds for casting metallic wheels herein-
after described. My said Invention is especially applicable to the manufacture
of moulds for casting toothed wheels, but is also applicable to the manufacture
of moulds for casting pulleys and other wheels.
I will describe my Invention as applied to the manufacture of moulds for
casting toothed wheels. In the centre of the circular mould box in which the
wheel is to be cast a vertical shaft or centre is fixed. On the edge of
the mould box I mark out a number of divisions corresponding with the
pitch or number of teeth in the wheel to be cast. These divisions may either
be made by a radius pointer revolving on the vertical centre, with suitable

page_text: dividing wheels, or by dividing a circumferential line on the edge of the
mould box. I place upon the before-mentioned vertical shaft or centre, so as
to revolve upon it, a table with a deep socket carrying a horizontal moulding
plate or bar, the said bar being somewhat longer than the radius of the largest
wheel to be made, and adjustable to the requisite length by sliding on its
table. The end of the said bar is provided with a sliding bracket which
moves horizontally in the direction of a diameter of the mould box. To this
bracket the pattern is affixed, but is capable of being moved backwards and
forwards. The said bar is provided with one or more arms which can be
secured to the mould box by clamps in order to keep all parts rigid during
moulding. The pattern may be made with one or more teeth so as to mould
one or more teeth at one operation. Instead of the arrangement of vertical
shaft and table already described, the vertical centre may be hollow, and the
table be provided with a shaft or centre to revolve within it. The process of
moulding is as follows:-The horizontal moulding bar is fixed by the arms
and clamps in such a manner that a fixed point on the moulding bar coincides
with one of the divisions on the edge of the mould box. The bracket
carrying the pattern is slided out to the required diameter and the sand
rammed up in the usual way; the bracket is then withdrawn inwards horizon-
tally until the pattern is clear of the part moulded; the clamps are loosened
and the moulding bar moved round a distance equal to one or more of the
divisions, and the clamps again secured. The process of ramming up the
sand, and the several operations described, are repeated until all the teeth are
moulded. In manufacturing moulds for casting small wheels I prefer to
dispense with the vertical centre and to construct the moulding bar with a
horizontal frame, baving arms and studs or stops fitting either externally or
internally against the periphery of the mould box in such a manner that it will
move upon and concentrically with it. When pulleys or other kinds of wheels
are to be moulded the pattern has the figure which is required to be given to
the periphery of the wheel.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Thomas Joseph Perry in the Great Seal Patent Office on
the 11th May 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
JOSEPH PERRY, of Highfields, near Bilston, in the County of Stafford, Iron-
founder, send greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventeenth day of November, in the year of our
Lord One thousand eight hundred and sixty-five, in the twenty-ninth year
of Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Thomas Joseph Perry, Her special licence that I, the said Thomas
Joseph Perry, my executors, administrators, and assigns, or such others as I,
the said Thomas Joseph Perry, my executors, administrators, and assigns, should
at any time agree with, and no others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain and
Ireland, the Channel Islands, and Isle of Man, an Invention for "IMPROVE-
MENTS IN MACHINERY FOR THE MANUFACTURE OF MOULDS FOR CASTING METALLIC
WHEELS," upon the condition (amongst others) that I, the said Thomas
Joseph Perry, my executors or administrators, by an instrument in writing
under my, or their, or one of their hands and seals, should particularly
describe and ascertain the nature of the said Invention, and in what manner
the same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
NOW KNOW YE, that I, the said Thomas Joseph Perry, do hereby declare
the nature of the said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say:-
My Invention consists of the arrangement or combination of the parts of
machinery for the manufacture of moulds for casting metallic wheels herein-
after described. My said Invention is especially applicable to the manufacture
of moulds for casting toothed wheels, but is also applicable to the manufacture
of moulds for casting pulleys and other wheels.
I will describe my Invention as applied to the manufacture of moulds for
casting toothed wheels:-In the centre of the circular mould box in which
the wheel is to be cast a vertical shaft or centre is fixed. On the edge of the
mould box I mark out a number of divisions corresponding with the pitch or
number of teeth in the wheel to be cast; these divisions may either be made
by a radius pointer revolving on the vertical centre with suitable dividing
wheels, or by dividing a circumferential line on the edge of the mould box.
I place upon the before-mentioned vertical shaft or centre, so as to revolve
upon it, a table with a deep socket carrying a horizontal moulding plate or
bar, the said bar being somewhat longer than the radius of the largest wheel
to be made, and adjustable to the requisite length by sliding on its table.

page_text: The end of the said bar is provided with a sliding bracket, which moves
horizontally in the direction of a diameter of the mould box. To this bracket
the pattern is affixed, but is capable of being moved backwards and forwards.
The said bar is provided with one or more arms, which can be secured to the
mould box by clamps in order to keep 'all parts rigid during moulding. The
pattern may be made with one or more teeth, so as to mould one or more.
teeth at one operation. Instead of the arrangement of vertical shaft and
table already described the vertical centre may be hollow, and the table be
provided with a shaft or centre to revolve within it.
The process of moulding is as follows:-The horizontal moulding bar is
fixed by the arms and clamps in such a manner that a fixed point on the
moulding bar coincides with one of the divisions on the edge of the mould
box. The bracket carrying the pattern is slided out to the required diameter,
and the sand rammed up in the usual way. The bracket is then withdrawn
inwards horizontally until the pattern is clear of the part moulded. The
clamps are loosened and the moulding bar moved round a distance equal to
one or more of the divisions, and the clamps again secured. The process of
ramming up the sand and the several operations described are repeated until
all the teeth are moulded. In some cases I dispense with the vertical centre,
and construct the moulding bar with a horizontal frame having arms and
studs or stops fitting either externally or internally against the periphery of
the mould box in such a manner that it will move upon and concentrically
with it. When pulleys or other kinds of wheels are to be moulded the
pattern has the figure which is required to be given to the periphery of the
wheel.
Having explained the nature of my Invention I will proceed to describe,
with reference to the accompanying Drawings, the manner in which the same
is to be performed.
Figure 1 represents, partly in side elevation and partly in vertical section,
a machine for the manufacture of moulds for casting toothed wheels con-
structed according to one of the arrangements of my Invention, and Figure 2
is a plan of the same. The same letters of reference indicate the same parts
in both Figures.
a is the circular mould box in which the wheel is to be cast; b is a fixed
vertical shaft in the centre of the said mould box, having at its top a worm
wheel for the purpose herein-after explained; c is a bracket, the socket cof
which revolves upon the shaft 6; d is a table fixed on the bracket c; e is the
horizontal moulding plate or bar of somewhat greater length than the radius
of the largest wheel to be made. The said moulding plate or bare slides

page_text: upon the table d, and may be adjusted to the required length and fixed when.
adjusted by the screw pins and nuts f which pass through holes g in the said
bar on either side of the slot h, which said slot h runs down the middle of the
bar through nearly its whole length. The vertical shaft b passes through the
said slot h; i is a bracket capable of sliding on the end of the bar e, the sliding
motion of the said bracket being effected by the hand, wheel k and screw 1,
the said screw taking into a screw box fixed to the bracket i. The screw
is carried by a bearing n fixed on the bar e. To the bracket i the pattern o is
affixed, the said pattern being capable of being carried backwards and forwards
in the direction of a radius by the sliding motion of the said bracket i. The
bar e is provided with two arms p, p, which can be secured to the mould
box a by means of clamps q. By the clamping of the arms p to the mould
box a the moulding bar or plate e is kept rigid during moulding. The
pattern o may be made with one, two, or more teeth so as to mould one, two,
or more teeth at one operation. Instead of making the central shaft b solid
and making the socket of the bracket c work thereon, the said central
vertical shaft may be made hollow and the table d be provided with a shaft
or centre which revolves within it. On the edge of the mould box a I mark
out a number of divisions corresponding with the pitch or number of teeth
in the wheel to be cast. These divisions may either be made by a radius
pointer revolving on the vertical central shaft 6 with suitable dividing wheels,
or by dividing a circumferential line on the edge of the mould box, but I
do not limit myself to any particular dividing mechanism. In the machine,
Figures 1 and 2, I have represented dividing mechanism constructed as
follows-s is a worm wheel keyed to the fixed vertical shaft b; a worm r
gearing with the worm wheels works in bearings t on the end of the table d.
A hand wheel ų serves to give motion to the worm r; by the rotation of the
said worm r, the table d and moulding plate or bar e may be carried. round
the shaft 6 through any required angle. By means of the toothed wheels v, w,
and fixed pointer x, the distance through which the arm e is moved may be
registered. I prefer however to use a series of divisions on the edge of the
mould box to which divisions a fixed part of the bar e, such, for example, as
one of the edges of the arms p is brought. The moulding of the toothed wheel
to be cast in the box a is as follows:-The horizontal moulding bar e is
fixed by the arms p and clamps q in such a manner that the edge of one of
the arms p or other fixed part of the moulding bar e coincides with one of
the divisions on the edge of the mould box a. The bracket carrying the
pattern o is moved outwards to the required diameter and the sand rammed
up in the usual way. The bracket is then withdrawn inwards horizontally

page_text: until the pattern o is clear of the part moulded. The clamps 9 are loosened
and the moulding bar e moved round a distance equal to one or more of the
divisions on the edge of the mould box a, and the arms p again secured by
the clamps g. The process of ramming up the sand and the several operations
described are repeated until all the teeth are moulded.
Figure 3 represents in vertical section, and Figure 4 in plan, another
machine constructed according to my Invention, in which the central vertical
shaft is dispensed with; Figure 5 is a section of a portion of the same taken
on the line a, b; Figure 4 and Figure 6 is an elevation of a portion of the
machine. The same letters indicate the same parts in Figures 3, 4, 5, and 6.
c is the circular mould box, having a toothed rim c. Upon the top of the
mould box c, and capable of revolving concentrically thereto, is a circular
horizontal frame d, the said frame being connected to the said box by a
V-shaped annular projection on the latter engaging in a corresponding shaped
annular groove or depression in the former, as seen in the section, Figure 3.
The circular frame d has within it a rectangular frame e, upon which
rectangular frame e a table f is capable of sliding, and being fixed thereon at
any point to suit the diameter of the wheel to be moulded. The table fis
fixed on the frame e by the screw pins and nuts at 9 in the manner best seen
in the section, Figure 5. The sliding table f takes the place of the moulding
plate or bar in the first described machine; h is a bracket or slide capable of
sliding horizontally on the table f, to which said bracket or slide the pattern i
is fixed. The sliding motion of the bracket h is effected by the screw k and
band wheel 1, supported in the bearing m, secured to the table f, the said
screw k taking into a screw box in the bracket h. The circular frame d is
made to revolve within the mould box c by means of the pinion n gearing with
the toothed rim of the said mould box, the said pinion being turned by the
hand wheel p. The pinion n and hand wheel p are carried by the hollow
bracket, secured to the circular frame c, as best seen in Figure 6. I do not
limit myself to the use of the pinion n and toothed rim c for giving motion to
the circular frame d, as any other convenient mechanism may be employed,
or the circular frame d may be moved by hand.
The process of moulding by this machine is as follows:-A line on the
circumference of the mould box c is divided into as many divisions as there are
teeth in the wheel to be moulded; a pointer on the circular frame d having been
brought by the turning of the hand wheel p opposite one of these divisions,
the said frame d is fixed to the mould by a clamp, or otherwise; the pattern i
is then moved outwards by turning the hand wheel l, and sand or other
moulding material is rammed in between the said pattern i and mould box c

page_text: in the ordinary way. The pattern i is- then withdrawn inwards, so as to be
clear of the part moulded, and the circular frame d is carried round a distance
equal to one or more divisions on the mould box c, and the said frame is
again clamped or otherwise fixed, when the process of moulding is repeated
until the whole circumference of the wheel to be cast is moulded.
pulleys or other kinds of wheels are to be moulded the pattern has the figure
which is required to be given to the periphery of the wheel instead of the
toothed figure represented in the Drawings.
When
Having now described the nature of my Invention, and the manner in
which the same is to be performed, I wish it to be understood that I do
not limit myself to the precise details herein described and illustrated in the
accompanying Drawings as the same may be varied without departing from
the nature of my Invention, but I claim as my Invention,-
Firstly, the arrangement or combination, substantially in the manner
herein-before described and illustrated in Figures 1 and 2 of the accompanying
Drawings, of the parts of machinery for the manufacture of moulds for casting
metallic wheels.
Secondly, the arrangement or combination, substantially in the manner
herein-before described and illustrated in Figures 3, 4, 5, and 6 of the
accompanying Drawings, of the parts of machinery. for the manufacture of
moulds for casting metallic wheels.
In witness whereof, I, the said Thomas Joseph Perry, have hereunto set
my hand and seal, this Tenth day of May, in the year of our Lord
One thousand eight hundred and sixty-six.
5
Witness,
THOMAS JOSEPH PERRY. (L.S.)
FREDERICK RICHARD WHEELDON,
Highfields,
Bilston.