CERTAIN IMPROVEMENTS IN THE METHOD OF CASTING, FORMING, OR PRODUCING TOOTHED WHEELS OR GEARING TO BE EMPLOYED IN MACHINERY FOR PREPARING, SPINNING, AND TWISTING COTTON OR OTHER FIBROUS SUBSTANCES
Year: 1867

page_text: LETTERS PATENT to William Hall, of Ashton-under-Lyne, in the County
of Lancaster, John Wren, aud James Brandwood, both of Manchester, in
the same County, for the Invention of "CERTAIN IMPROVEMENTS IN THE
METHOD OF CASTING, FORMING, OR PRODUCING TOOTHED WHEELS OR GEARING
TO BE EMPLOYED IN MACHINERY FOR PREPARING, SPINNING, AND TWISTING
COTTON OR OTHER FIBROUS SUBSTANCES."
Sealed the 21st April 1868, and dated the 31st October 1867.
PROVISIONAL SPECIFICATION left by the said William Hall, John Wren,
and James Brandwood at the Office of the Commissioners of Patents,
with their Petition, on the 31st October 1867.
We, WILLIAM HALL, of Ashton-under-Lyne, in the County of Lancaster,
JOHN WREN, and JAMES BRANDWOOD, both of Manchester, in the same County,
do hereby declare the nature of the said Invention for "CERTAIN IMPROVE-
MENTS IN THE METHOD OF CASTING, FORMING, OR PRODUCING TOOTHED WHEELS OR
GEARING TO BE EMPLOYED IN MACHINERY FOR PREPARING, SPINNING, AND TWISTING
COTTON OR OTHER FIBROUS SUBSTANCES," to be as follows:-
The Invention relates to such wheels or gearing as are required to be made
in halves or two parts in order that they may be secured upon any shaft
without removing the shaft or other gearing therefrom.
The improvements consist in casting the tootbed wheels or gearing.in one
piece, having à hollow midfeather or double flange with a slot or opening left
between them extending at the back from the boss to near the periphery.
When the wheel is finished in the lathe a tapered wedge is inserted in the
boring for the shaft, which being sharply struck with a hammer causes the

page_text: casting to break through the boss, and the ends or junction of the midfeather
and the periphery, which being the weakest parts, and the wheel is thus
broken into halves, having the uneven granulations of the metal as a fitting
surface. When the wheel is to be secured on a shaft the halves are placed
one on each side, so that the boss encircles the shaft, and screw bolts or
screws are passed through holes in the sides of the midfeather or flange, and
the two halves are thus secured together, the fractured parts fitting so closely
that the junction is scarcely perceptible, and the true pitch of the wheel is
retained.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Hall, John Wren, and James Brandwood in the
Great Seal Patent Office on the 29th April 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
HALL, of Ashton-under-Lyne, in the County of Lancaster, JOHN WREN, and
JAMES BRANDWOOD, both of Manchester, in the County of Lancaster, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirty-first day of October, in the year of our
Lord One thousand eight hundred and sixty-seven, in the thirty-first year of
Her reign, did, for Herself, Her heirs, and successors, give and grant unto us,
the said William Hall, John Wren, and James Brandwood, Her special
license that we, the said William Hall, John Wren, and James Brandwood,
our executors, administrators, and assigns, or such others as we, the said
William Hall, John Wren, and James Brandwood, our executors, adminis-
trators, 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 Inven-
tion for "CERTAIN IMPROVEMENTS IN THE METHOD OF CASTING, FORMING, OR
PRODUCING TOOTHED WHEELS OR GEARING TO BE EMPLOYED IN MACHINERY FOR
PREPARING, SPINNING, AND TWISTING COTTON AND OTHER FIBROUS SUBSTANCES,"
upon the condition (amongst others) that we, the said William Hall, John
Wren, and James Brandwood, executors or administrators, by an instru-
ment in writing under our, 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!

page_text: the Great Seal Patent Office within six calendar months next and imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that we, the said William Hall, John Wren, and James
Brandwood, do hereby declare the nature of the said Invention, and in what
manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement and accompanying Drawing (that is.
to say)-
The Invention relates to such wheels or gearing as are required to be made
in halves or two parts, in order that they may be secured upon any shaft
without removing the shaft or other gearing therefrom.
The improvements consist in casting the toothed wheels or other gearing in
one piece, having a hollow midfeather or double flange with a slot or opening
left between them, extending at the back from the boss to near the periphery.
When the wheel is finished in the lathe a ta ered wedge is inserted in the
boring for the shaft, which being sharply struck with a hammer causes the
casting to break through the boss and the ends or junction of the midfeather
and the periphery, which is the weakest part, and the wheel is thus broken
into halves, having the uneven granulations of the metal as a fitting surface.
When the wheel is to be secured on a shaft the halves are placed one on
cach side, so that the boss encircles the shaft, and screw bolts or screws are
passed through holes in the sides of the midfeather or flanges, and the two
halves are thus secured together, the fractured parts fitting so closely that the
junction is scarcely perceptible, and the true pitch of the wheel is retained.
In order that the Invention may be better understood and explained in
detail, I have hereunto attached a Sheet of Drawings made about the full
size.
Fig. 1 represents an elevation of the back view of a wheel constructed
according to our Invention, being one of the class of wheels known as
"skewed gearing" which are employed in machines for preparing cotton
termed "roving" and "slubbing" frames, and is shewn as an example; Fig. 2
represents a side elevation of the same.
In Figs. 1 and 2 a, a, are two flanges which are cast with and project
from the back of the wheel 6; these flanges have openings or slots i between
them extending from the boss c to the webs or feathers of metal d, which
connect the wheel at its periphery, and which in conjunction with the "skewed
teeth" form the connections between the top and bottom halves or portions of
the wheel, the whole being cast in one piece. When the wheels is bored and
finished in the lathe the internal surfaces of this slot are acted upon by a
tapered wedge which is inserted in the Loring for the shaft, and which being

page_text: sharply struck with a hammer causes the casting to separate or break in two
halves, having the uneven granulations e of the metal as a fitting or uniting
surface. When the wheel is to be secured on a shaft the balves are placed
one on each side, so that the boss encircles the shaft; the screw bolts g, 9, are:
then passed through holes in the flanges a, a, and the two halves are thus
secured together, the fractured parts fitting so closely that the junction is
scarcely perceptible, and the true pitch and circular or original condition of:
the wheel is retained.
We would here remark that we are aware that wheels have been cast in
two parts, and the uniting. surfaces planed flat, and then the halves have
been secured together, but we wish it to be distinctly understood that we
claim,―
First. Forming or producing the description of wheels or gearing used for
the purposes aforesaid in one piece, and dividing the same in such a manner
that the granulations of the fracture which divide the wheel into two parts
shall constitute or form the junction or uniting surface when the parts of the
wheel are secured together, and so that the original or circular condition of
the wheel may be retained.
And, secondly. The method of casting or forming such wheels with a
slotted midfeather, so as to render them readily fractured, as herein-before
described.
In witness whereof, we, the said William Hall, John Wren, and James
Brandwood, have hereunto set our hands and seals, this Twenty-
seventh day of April, in the year of our Lord One thousand eight
hundred and sixty-eight.
Witnessed by
JOHN L. DAVIES, C.E.,
Office for Patents,
Manchester.
WILLIAM HALL.
(L.S.)
JOHN WREN.
(L.S.)
JAMES BRANDWOOD. (L.S.)