Improvements in Apparatus for Grinding the Cards of Carding Engines.
Year: 1898

page_text: Date of Application, 17th Aug., 1898
Complete Specification Left, 17th May, 1899-Accepted, 17th June, 1899
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Grinding the Cards of Carding
Engines.
We, WILLIAM SENIOR, Mechanic, and GEORGE ALEXANDER KENNEDY, of the
Firm of Horsfall & Bickham, Card Makers, both of Bridgewater Works, Pendle-
ton, in the County of Lancaster, do hereby declare the nature of this invention
to be as follows;-
"
This invention relates to that kind of apparatus for grinding the cards of
carding engines which is known as the Horsfall Grinder," and the object of
the invention is to provide such apparatus with a very simple noiseless motion
for driving the screw from the tube.
For this purpose we provide a suitable casing or box on the end of the grinder
but prevented from rotating by a suitable arm or bracket (or otherwise).
The tube projects part way into the casing and is provided therein with a
specially formed worm wheel in gear with a worm carried by a suitable bracket
or brackets fixed in the casing. The worm wheel is so mounted and its teeth are
so cut or beveled that they only reach to a point about vertically beneath the
centre of the worm, and a second similar worm wheel fixed on the screw which
This
passes right through the casing is also in gear with the same worm.
second worm wheel is made with (say) one tooth less than the first and thus the
tube will drive the screw at the desired differential speed.
Tad this 10t1
J
с Juomat 1908
GEO. DAVIES & SON,
Agents for the Applicants,
4, St. Ann's Square, Manchester.
Improvements in Apparatus for Grinding the Cards of Carding
Engines.
We, WILLIAM SENIOR, Mechanic, and GEORGE ALEXANDER KENNEDY, of the
Firm of Horsfall & Bickham, Card Makers, both of Bridgewater Works, Pendle-
ton, in the County of Lancaster, 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 that kind of apparatus for grinding the cards of
carding engines which is known as the "Horsfall Grinder," and the object of

page_text: the invention is to provide such apparatus with a very simple noiseless motion
for driving the screw from the tube or sleeve.
The manner in which our said invention is to be performed or carried into
practical effect will be readily understood on reference to the sheet of drawings
hereunto annexed and the following explanation thereof.
Fig. 1 on the drawings is a partial longitudinal section of the improved appa-
ratus, Fig. 2 is a transverse section of the same taken through about the line AB
on Fig. 1 and Fig. 3 is a plan view of the box for containing the differential
driving mechanism. Fig. 4 is a longitudinal sectional view (full size) of the
divided worm wheel hereinafter more particularly referred to.
C
a is the grinding wheel, b the double threaded screw, and c the tube or sleeve.
For the purposes of our invention we provide a suitable casing or box d on the
end of the grinder which is prevented from revolving by means of a suitable
arme attached thereto and held fast in a groove formed in the fixed bracket f
which carries the grinder, or in any other convenient manner.
The tube c projects part way into the casing d and is provided therein with a
specially formed worm wheel g, in gear with a worm carried by a suitable
bracket or brackets i fixed in the casing d.
The worm wheel g (see full size sectional view Fig. 4) only reaches to a point
vertically opposite to the centre or axis of the worm h (see Fig. 1) and a second
similar worm wheel g fixed on the screw 6 which passes right through the
casing d is also in gear with the same worm h, the two wheels and g forming,
as it were, a divided worm wheel each half being in gear with the worm but
the second half g which is fixed on the screw b is made with (say) one tooth less
than the first half g (fixed on the tube or sleeve c) and thus the said tube will
drive the screw at the desired differential speed, so as to cause the traverse of
the grinding wheel a.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is;-
The peculiar construction and arrangement of worm gearing consisting of a
divided worm wheel both halves of which are in gear with the same worm, one
half of the wheel being fixed on the tube and the other half on the screw, and
being made with one tooth less than the first half whereby the requisite differen-
tial motion is given to the screw.
GEO. DAVIES & SON,
Agents for the Applicants,
4, St. Ann's Square, Manchester.