IMPROVEMENTS IN THE CONSTRUCTION OF MACHINERY OR APPARATUS FOR GRINDING CARDS
Year: 1878

page_text: LETTERS PATENT to George Henry Parkin, Tom Crowther, John Crowther, and.
Alfred Crowther, all of Oldham, in the County of Lancaster, for the Invention
of IMPROVEMENTS IN THE CONSTRUCTION OF MACHINERY OR APPARATUS
FOR GRINDING CARDS.”
Sealed the 24th January 1879, and dated the 8th November 1878.
PROVISIONAL SPECIFICATION left by the said George Henry. Parkin,
Tom Crowther, John Crowther, and Alfred Crowther at the Office of the
Commissioners of Patents on the 8th November 1878.
GEORGE HENRY PARKIN, TOM CROWTHER, JOHN CROWTHER, and ALFred.
CROWTHER, all of Oldham, in the County of Lancaster. "IMPROVEMENTS IN THE:
CONSTRUCTION OF MACHINERY OR APPARATUS FOR GRINDING CARDS."
The Invention relates to the machinery or apparatus employed for grinding
the card wires of carding engines, and is designed to "set" the card rollers to the
emery or grinding roller with greater accuracy and steadiness than hitherto.
To each end of the side frame of the machine we fix a bracket, upon which is
mounted a shaft in suitable bearings. At each end of this shaft we key an eccentric.
which is connected by a link to the sliding "steps" or bearings which support the
axes of the rollers to be ground.
To this shaft (by preference about midway) is keyed a toothed quadrant which
gears into a worin turned by a hand wheel. By turning the hand wheel attached.
to this worm the shaft is caused to perform part of a revolution which actuates the
excentrics connected thereto, thereby causing the "steps" supporting the card
rollers to be moved nearer to or further from the grinding rollers as required.
By this means the card rollers may be set with the greatest accuracy to the
periphery of the emery or grinding roller, and. will. ruu much steadier. than
hitherto.

page_text: The sliding "steps" are provided with three recesses or bearings so as to be
capable of carrying the various sizes of card rollers.
The end bracket supporting the bearings or steps may also be made adjustable
(by sliding in grooves or otherwise) so that various lengths of card rollers may be
ground in the same machine.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Henry Parkin, Tom Crowther, John Crowther, and Alfred
Crowther in the Great Seal Patent Office on the 8th May 1879.
«
GEORGE HENRY PARKIN, TOM CROWTHER, JOHN CROWTHER, and ALFRED
CROWTHER, all of Oldham, in the County of Lancaster. IMPROVEMENTS IN
MACHINERY OR APPARATUS FOR GRINDING CARDS."
This Invention relates to the machinery or apparatus employed for grinding the
card wires of the rollers and clearers of carding engines, and is designed for the
purpose of setting the said card rollers to the surface of the emery or grinding roller
with greater accuracy and steadiness than hitherto.
The Invention consists principally in dispensing with the arms or levers usually
employed for carrying the said rollers and in carrying the latter on slides acted
upon directly by excentrics which are rotated by means of a worm and worm
wheel.
Such being the nature and object of our said Invention, we will now proceed to
describe in detail the manner in which the same is to be or may be per-
formed or carried into practical effect, and in order that the same may be clearly
understood we have annexed hereunto a Sheet of Drawings illustrative thereof, and
have marked the same with figures and letters of reference corresponding with
those in the following explanation thereof.
Fig. 1 in the annexed Drawing is an end elevation, and Fig. 2 a vertical section
of a roller grinding machine constructed according to our Invention.
At each end of the frame a, a, of the machine is bolted a bracket b, b, upon which
is mounted a shaft c, c, in suitable bearings.
At or near each end of this shaft we key an excentric d, d, the clip e, e, of which
forms a link by which it is connected to the sliding steps or bearings f, f, which
support the axes of the roller g, g, to be ground.
These steps are made with two or three notches for the accommodation of rollers
and clearers of different diameters.
To the shaft c, c, (by preference about midway) is keyed a toothed quadrant h, h,
which gears
into a worm i, i, upon a short shaft on which is also keyed a hand
wheel k, k, for giving motion to the same.
Upon turning the hand wheel k, k, the shaft c, c, is caused to turn a portion of
a revolution which actuates the excentrics d, d, keyed thereon, thereby causing the
sliding steps f, f, supporting the card roller g, g, to be moved nearer to or further
from the emery or grinding roller, as required.

page_text: By this means the card rollers may be set with the greatest accuracy to the
periphery of the emery or grinding roller and they will run much steadier than
hitherto.
We have before mentioned that the sliding steps f, f, which support the card
rollers are made with two or three notches, so as to be capable of carrying card
rollers of various diameters, and we would here remark that the end brackets b, b,
supporting the bearings or steps may also be made adjustable (by sliding in grooves)
so that card rollers of various lengths can be ground in the same machine.
Having now described the nature and object of our said Invention, together with
the manner in which the same is to be or may be performed or carried into practical
effect, we wish it to be understood that we claim as our Invention the employment
or use in such machines of sliding bearings for the card rollers, acted upon directly
by means of excentrics, substantially in the manner and for the purposes herein-
before set forth.
In witness whereof, I, the said George Henry Parkin (on behalf of myself
and the said Tom Crowther, John Crowther, and Alfred Crowther), have
hereunto set my hand and seal, this Sixth day of May, in the year of our
Lord One thousand eight hundred and seventy nine.
GEORGE HENRY PARKIN. (L.S.)