IMPROVEMENTS IN MACHINERY OR APPARATUS FOR MOULDING TOOTHED WHEELS AND OTHER CIRCULAR ARTICLES
Year: 1874

page_text: LETTERS PATENT to William Edwin Heys, of Manchester, in the
County of Lancaster, Engineer, for the Invention of "IMPROVEMENTS
IN MACHINERY OR APPARATUS FOR MOULDING TOOTHED WHEELS AND OTHER
CIRCULAR ARTICLES."
Scaled the 15th June 1875, and dated the 17th December 1874.
PROVISIONAL SPECIFICATION left by the said William Edwin Heys
at the Office of the Commissioners of Patents, with his Petition,
on the 17th December 1874.
I, WILLIAM EDWIN HEYS, of Manchester, in the County of Lancaster,
Engineer, do hereby declare the nature of the said Invention for "Im-
PROVEMENTS IN MACHINERY OR APPARATUS FOR MOULDING TOOTHED WHEELS AND
OTHER CIRCULAR ARTICLES," to be as follows:-
My Invention relates to an arrangement and construction of apparatus
for moulding toothed wheels and other circular articles which is portable,
so as to be capable of casy removal from one part of the foundry to

page_text: another, and which may be adapted to mould in a box or on the outside
thereof, the said box in the latter case, as well as in the former, being
the support and guide for the moving parts.
The arrangement I propose is as follows:-Upon a box of circular
form is placed a ring confined to the said box by keys or other suitable
means, so as to be capable of removal therefrom. This ring has a V or
other such guide, upon which is placed another but moveable ring,
carrying a bracket in which is mounted a worm taking into a worm
wheel formed upon the stationary ring, and the former ring may thus be
turned through any desired portion of the circle, which extent of motion
is regulated by gearing of change wheels, and by a dividing plate if
desired. Upon the moveable ring are formed arms which carry a trammel
capable of being moved radially by means of a scrow or other suitable
means, and this trammel has a guide in which a part carrying a
segment of the article to be moulded is mounted, it being capable of
being moved downward and upward for successive rammings of the sand,
between each of which operations the above mentioned gearing is turned
so as to move the pattern to another position. By extending the said
trammel beyond the periphery of the box a circular article may be
moulded on the foundry floor.
When an article has been moulded in the box, the moving parts and
their guide may be adapted to another box by removing the aforesaid
keys or other such fastenings.
Another part of my Invention relates to an improvement in the con-
struction of that wheel moulding machine for which Letters Patent were
granted to George Lamb Scott, dated
No.
I still use the pivot upon which the whole machine is mounted, but upon
this pivot I place a tube capable of being fastened thereto by set screws
or other ordinary means; and fast with the said tube and beneath the
trammel is a worm wheel into which the worm for giving motion to the
trammel and dividing apparatus is in gear. The aforesaid tube at
its upper end receives a stud on which is a plate forming the base of the
guide for the trammel, which is half circular in form. At one end of
the trammel guide is a pulley handle mounted on a screw which works in
a nut for moving the trammel inward and outward, and this screw is
mounted over the centre motion of the said trammel.

page_text: For moving the part which carries the ordinary segmental pattern
upward and downward I employ a nut capable of being turned, but pre-
vented from moving bodily by fixed flanges. This nut works on a screw,
the upper and lower ends of which abut against projections extending
from the sliding part.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Edwin Heys in the Great Seal Patent
Office on the 17th June 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, WILLIAM
EDWIN HEYS, of Manchester, in the County of Lancaster, Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventeenth day of December, in the
year of our Lord One thousand eight hundred and seventy-five, in the
thirty-eighth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said William Edwin Heys, Her
special license that I, the said William Edwin Heys, my executors,
administrators, and assigns, or such others as I, the said William
Edwin Heys, 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 In-
vention for "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR MOULDING TOOTHED
WHEELS AND OTHER CIRCULAR ARTICLES," upon the condition (amongst others)
that I, the said William Edwin Heys, by an instrument in writing under
my hand and seal, should particularly describe and ascertain the nature
of the said Invention, and in what manner the same was to be per-
formed, 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.
TATT EVAM
L
T II...

page_text: say.
My Invention relates, firstly, to an arrangement and construction of
apparatus for moulding toothed wheels and other circular articles which
is portable, so as to be capable of easy removal from one part of the
foundry to another, and which may be adapted to mould in a box or on
the outside thereof, the said box in the latter case as well as in the
former being the support and guide for the moving parts.
Fig. 1 is a side view of the apparatus; Fig. 2, a vertical section; and
Fig. 3, a plan view.
At 1 is a mould box which for the purposes of my Invention is
circular in form, and upon it is cast a projecting flange 2; upon this
flange is placed a ring 3 which is secured to the said flange by screws 4,
and upon it is formed a ring of worm wheel teeth 5. The upper part
of the ring 3 is formed with a V recess within which is a circular V
part 6; and to this is fixed a circular plate 7 which carries a bracket 8.
Attached to this bracket is a nut 9 within which is a screw 10, provided
at its outward end with a pulley handle 11, the boss of which embraces
the end of a hollow semicircular trammel 12, the flat bottom part thereof
being capable of sliding upon the surface of the bracket 8, such part
thereof however being provided with a slot for the purpose of admitting
the stationary nut 9. At 13 is a cap piece fixed to the bracket 8 and
extending over the trammel, and this therefore, together with the surfaco
of the bracket 8 constitute a guide in which the trammel 12 may be
moved inward or outward. To the end of the trammel 12 is attached a
plate 14 which carries a nut 15, and within this is a screw 16 provided
with a pulley handle 17, the boss of which is embraced by one end of a
semicircular sliding frame 18, over which there passes a cap piece 19
secured to the said plate 15, and thus a guiding arrangement is provided
for the sliding frame 18, which at its lower end carries the segmental
pattern from which it is intended to mould. Connected to the bracket 8
are two other brackets 20, 21, both of which are attached to the circular
plate 7, and the latter carries a short shaft 22, upon which there is a
worm 23 in gear with the fixed worm wheel 5. Upon the said shaft 22

page_text: is a pinion 24 in gear with a carrier 25 which takes into a pinion 26
on an axes supported by the arm 27, and this axis also carries the
detant 28 for taking into the notched dividing plate 28 which is fixed to
the arm 27.
In using this apparatus a segmental pattern (not shown in the
Drawing) is attached to the part 18, and the box 1 having been supplied
with sand, the pulley handle 11 is turned, thereby causing the screw 10 to
revolve, which by working in the fixed nut 9 will cause the sliding part
12 to move outward, carrying with it the guide 19, 14, and consequently
sliding part 18 therein mounted. This motion is continued until the
radius of the intended article has been reached by the segmental pattern,,
after which the said pattern is raised and depressed by the pulley
handle 17 for successively moulding portions of the article as is well
understood between each of such mouldings, the detant 29 and gearing
24, 25, 26, are turned, and thus the worm 23 is caused to revolve, which
(being in gear with the fixed worm wheel 5) moves bodily around
the box 1, together with the gearing connected with it, the radial
arm or trammel 12 and all other parts carried by the circular plate 7.
.
If it be desired to mould with the same apparatus in another box the
screws 4 are removed and then the whole of the said moulding parts may
be removed and adapted to the required box.
If it be desired to mould an article of greater diameter than the box,
then by using a trammel of sufficient length the part 18 may be moved
outward to the required distance.
Figs. 4, 5, and 6, shew a modification of the above described appa-
ratus. In this instance the dividing wheel 28 and gearing connected
therewith attached to the box 1, and do not therefore move bodily,
and the worm wheel 5 is formed. upon a part 30 corresponding to the
formerly described circular plate 7, and it rests upon a V guide pro-
jecting from the box 1 moving with the moulding parts which are
precisely the same as those above referred to.
Another part of my Invention relates to improvements on that wheel
moulding machine for which Letters Patent were granted to George Lamb
Scott, dated Twenty-fifth of. October, Eighteen hundred and sixty-five,

page_text: of the machine, and also the fixed wheel 37 mounted on the tube 36 and
situate beneath the trammel.
In witness whereof, I, the said William Edwin Heys, have here-
unto set my hand and seal, this Sixteenth day of June, in
the year of our Lord One thousand eight hundred and seventy-
five.