IMPROVEMENTS IN AND MEANS OR APPARATUS FOR CASTING DRUMS
Year: 1862

page_text: LETTERS PATENT to Jonathan Barker, of Todmorden, in the County of
York, Engineer, Millwright, Iron and Brass Founder, for the Invention
of "IMPROVEMENTS IN AND MEANS OR APPARATUS FOR CASTING DRUMS,
DA
Sealed the 5th September 1862, and dated the 6th March 1862.
PROVISIONAL SPECIFICATION left by the said Jonathan Barker at the
Office of the Commissioners of Patents, with his Petition, on the
6th March 1862.
I, JONATHAN BARKER, of Todmorden, in the County of York, Engineer,
Millwright, Iron and Brass Founder, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN AND MEANS OR APPARATUS FOR CASTING
DRUMS, PULLIES, GEAR AND OTHER WHEELS, AND BUSHES OR KEYS FOR THE SAME,"
to be as follows:—
This Invention relates to those drums, pullies, gear, and other wheels which
are fixed on shafting by conical bushes or cylindrical keys, and my object is
to economize labour, and reduce the cost of fitting up or of manufacturing
shafting and gearing. Heretofore the hole in the boss of such drum, pulley;
or wheel has been cast smaller than the bush or key, and afterwards made to
the proper size by boring tools. The bush or key has been cast in sand in
one, two, or more parts, and afterwards, by filing or other means, fitted to the
conical hole in the drum, pulley, or wheel, and also to the shaft on which they
are to be fixed.

page_text: Now, my improvements consist in casting the hole in the drum, pulley, or
wheel of proper size and form to receive the conical bush or key, and also in
casting the said bush or key of proper size and form to fit the hole, and the
shaft in two or more parts, and in suitablo condition for insertion in the hole
of such drum, pulley, or wheel to secure the same upon the shaft, and thus
dispense with turning and boring. I effect this by having the moulding box
formed and fitted specially for the particular drum, pulley, or wheel to be cast
therein. Cross bars with a central boss are provided in both top and bottom
parts, bored out true, and faced to receive a portable spindle or mandril, which
is turned to fit therein (in a certain position), and also to the size and form
of the hole required in the casting. A metal chill or casing in parts is also
provided to fit on the said spindle or mandril and betwixt the faced bosses of
the top and bottom parts of the moulding box, the interior of which is made
to the form and size of the boss of the drum, pulley, or wheel pattern, and to
fit to or around the arms thereof, whereby the outside of the bosses of drums,
pullies, or wheels may be made true without turning them, as the pattern
thereof when placed in the moulding box is held in a certain position by the
casing or chill and spindle while being rammed up with sand, and can then
be withdrawn in the usual manner. For casting the conical bushes or keys,
the moulding box is formed in parts fitting to the outside of the bush or key,
with a portable spindle the size of the shaft, on which such bush is to be fixed,
passing through the box, and having ribs or projections thereon to divide the
said bush into parts, whereby the bush or key is cast to fit the conical hole in
the drum; pulley, or wheel, and also to the shaft on which the same are to bo
fixed.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Jonathan Barker in the Great Seal Patent Office on the
6th September 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JONATHAN
BARKER, of Todmorden, in the County of York, Engineer, Millwright, Iron
and Brass Founder, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Sixth day of March, in the year of our Lord
One thousand eight hundred and sixty-two, in the twenty-fifth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Jonathan Barker, Her special license that I, the said Jonathan

page_text: Barker, my executors, administrators, and assigns, or such others as I, the
said Jonathan Barker, 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 Bri-
tain and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN AND MEANS OR APPARATUS FOR CASTING DRUMS, PULLIES,
GEAR AND OTHER WHEELS, AND BUSHES OR KEYS FOR THE SAME," upon the con-
dition, amongst others, that I, the said Jonathan Barker, 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 samo to be filed in the Great Scal Patent Office within
six calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Jonathan Barker, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement (that is to say):-
This Invention relates to those drums, pullies, gear, and other wheels which
are fixed on shafting by conical bushes or cylindrical keys, and my object is
to economize labour, and reduce the cost of fitting up or of manufacturing
shafting and gearing. Heretofore the hole in the boss of such drum, pulley,
or wheel has been cast smaller than the bush or key, and afterwards made to
the proper size by boring tools. The bush or key has been cast in sand in
one, two, or more parts, and afterwards, by filing or other means, fitted to the
conical hole in the drum, pulley, or wheel, and also to the shaft on which they
are to be fixed.
Now, my improvements consist in casting the hole in the drum, pulley, or
wheel of proper size and form to receive the conical bush or key, and also in
casting the said bush or key of proper size and form to fit the hole, and the
shaft in two or more parts, and in suitable condition for insertion in the hole
of such drum, pulley, or wheel to secure the same upon the shaft, and thus
dispense with turning and boring. I effect this by having the moulding box
formed and fitted specially for the particular drum, pulley, or wheel to be cast
therein. Cross bars with a central boss is provided in both top and bottom
parts bored out true, and faced to receive a portable spindle or mandril;
which is turned to fit therein (in a certain position), and also to the size
and form of the hole required in the casting. A metal chill or casing in

page_text: .parts is also provided to fit on the said spindle or mandril and betwixt the
faced bosses of the top and bottom parts of the moulding box, the interior
of which is made to the form and size of the boss of the drum, pulley, or
wheel pattern, and to fit to or around the arms thereof, whereby the outside
.of the bosses of drums, pullics, or wheels may be made true without turning
them, as the pattern thereof when placed in the moulding box is held in a
certain position by the casing or chill and spindle while being rammed up
with sand, and can then be withdrawn in the usual manner.
For casting
the conical bushes or keys, the moulding box is formed in parts fitted to
the outside of the bush or key, with a portable spindle (the size of the shaft,
on which such bush is to be fixed) passing through the box, and having ribs
or projections thereon to divide the said bush into parts, whereby the bush or
key is cast to fit the conical hole in the drum, pulley, or wheel, and also to
the shaft on which the same are to be fixed.
And in order that my said Invention may be clearly understood, I have
given reference to an accompanying Sheet of Drawings illustrating the means
or apparatus I employ for effecting the object and purposes set forth.
Fig. 1 is a plan of a moulding box for a drum or pulley, and Fig. 2 is a
vertical section of the same. A is the bottom part, and B the top part, which
are fitted together and held in position by steady pins and cotters C, as usual.
Both top and bottom parts have cross bars or radial bars with central
bosses D, E, bored out true to fit the spindle or mandril G, which is turned
to the size of the bush or key to be employed. His the drum, pattern, or
model of metal, the boss of which is bored to fit the mandril, and I and J are
the chills, which are formed to fit the outside of the boss and also the mandril,
so that when the pattern has been rammed up and withdrawn, the chills can
be replaced and will retain their position, and, when the metal has been run,
the mandril can be driven or drawn out. Moulding boxes constructed and
fitted in this mauner can be employed in the usual manner, and castings
produced thereby with great facility and truth or accuracy of formation.
Fig. 3 is a cross section, and Fig. 4 a vertical section, of a moulding box
for casting conical bushes or keys. A, B, are the side parts, which are bolted
together and bored out to the exterior form and size of the bush and of the
hole cast in the drum in which it is to be introduced; C, D, are caps or
covers fitting to the other parts, and having central holes therein for the ends
of the portable spindle E to pass through. The spindle is formed to the size
of the shaft to which the drum or pulley is to be applied or fixed, and pro-
jections e, e, are formed or fixed thercon, leaving spaces G, H, each of which
forms one-third or other part of a bush of suitable shape and size to fill the

page_text: space betwixt the shaft and boss of a drum to be fixed thereon, and cotters I, J,
are passed through the spindle to hold all the parts of the moulding box
together during the casting of the bushes.
It will be readily seen by those conversant with the casting of metals that
moulding boxes for gear and other wheels, coupling boxes, and similar articles
can be constructed in this manner, and employed to great advantage, and con-
sequently a great saving effected in the labour or in the cost of production
of shafting and gearing, or other similar machinery or articles of metal
manufacture.
Having thus fully described the nature of my said Invention, and the
manner in which the same is or may be performed or carried into practice,
I would have it understood that I do not confine myself to the precise details
of construction of the parts or apparatus as herein set forth, as various modi-
fications may be made therein; but what I claim as of my Invention, and
which I believe to be new within the realm, is the construction and use of
moulding boxes, in manner and for purposes substantially as herein described
and illustrated by the accompanying Sheet of Drawings.
In witness whereof, I, the said Jonathan Barker, have hereunto set my
hand and seal, this Third day of September, One thousand eight
hundred and sixty-two.
Signed, sealed, and delivered by the
within-named Jonathan Barker, in
the presence of
W". TASKER,
Patent Agent,
Halifax.
JONATHAN BARKER. (L.S.)