IMPROVEMENTS IN APPARATUS FOR GRINDING THE CARD PROVISIONAL SPECIFICATIONDING THE CARD FLATS AND CARD ROLLERS EMPLOYED IN CARDING ENGINES
Year: 1875

page_text: LETTERS PATENT to Joseph Standring Dronsfield, of the Firm of
Dronsfield Brothers, of Oldham, in the County of Lancaster, for
the Invention of "IMPROVEMENTS IN APPARATUS FOR GRINDING THE CARD
PROVISIONAL SPECIFICATION left by the said Joseph Standring
Dronsfield at the Office of the Commissioners of Patents, with his
Petition, on the 1st November 1875.
I, JOSEPH STANDRING DRONSFIELD, of the Firm of Dronsfield
Brothers, of Oldham, in the County of Lancaster, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN APPARATUS FOR GRINDING
THE CARD FLATS AND CARD ROLLERS EMPLOYED IN CARDING ENGINES," to be as
follows:-
My Invention relates in the first place to apparatus or
apparatus employed in the grinding of carding machine flats.
parts of
In such

page_text: apparatus the flats are fixed to parts which are mounted upon sliding
carriages, whereby the said flats are moved to and fro in contact with a
revolving grinding roller.
In apparatus which has been constructed previously to my said
Invention the said sliding carriages have received motion from a
revolving shaft, which has been mounted above the grinding roller.
I actuate the said carriages by means of a shaft mounted below the
said grinding roller. An excentric or crank imparts a rocking move-
ment to the said shaft, and levers fixed thereon are connected with
levers or lever frames, which are mounted below the slides and on the
bosses or collars of the bearings in which the axle of the grinding roller
is mounted. Slots or openings are formed in the slides to permit of the
connection of the carriages with the said levers. This connection may
be effected by means of a link, or a pin or projection on the lever may
work in a slot in the carriage, or in a part affixed thereto, or a pin,
stud, or projection in or on the carriage may work in a slot in the
lever.
If preferred spur wheels or quadrants gearing with or transmitting
motion to racks on the said carriages may be employed in lieu of the
said levers or lever frames. In an alternative arrangement the rocking
motion is imparted to the aforesaid levers or lever frames by means of a
revolving shaft, on which are fixed or formed excentrics or cranks,
which are connected by means of links, rods, or arms with the said
levers or lever frames. Both ends of each flat are set simultaneously
by means of a shaft, upon which are fixed or formed two excentrics or
cams, which act upon the parts to which the flats are fixed. The said
shaft is turned by means of a screw which is mounted in a bearing,
which is fitted to swivel and works in a nut also fitted to swivel in or on
a lever which is fixed to the said shaft.
A second part of my Invention relates to apparatus or parts of
apparatus employed in the grinding of card rollers. The card roller
to be ground is carried by a frame, which is fitted to swivel in or on
bearings at or near the lower part of the framing of the machine. The
upper parts of the ends of the said frame are formed or provided with
bearings for the axle of the card roller, one or both of the said bearings
being adjustable. The upper end of the said frame can be moved

page_text: towards the grinding roller by means of a screw. I prefer to situate
the points upon which the said frame swivels nearer to the vertical centre
line of the grinding roller than the upper bearings which support the
card roller.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Joseph Standring Dronsfield in the Great Seal
Patent Office on the 1st May 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOSEPи
STANDRING DRONSFIELD, of the Firm of Dronsfield, Brothers, of Oldham,
in the County of Lancaster, Machinists, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the First day of November, in the year of
our Lord One thousand eight hundred and seventy-five, in the fortieth
year of Her reign, did for Herself, Her heirs and successors, give
and grant unto me, the said Joseph Standring Dronsfield, Her special
licence that I, the said Joseph Standring Dronsfield, my executors,
administrators, and assigns, or such others as I, the said Joseph
Standring Dronsfield, 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
Invention for IMPROVEMENTS IN APPARATUS FOR GRINDING THE CARDS AND
CARD ROLLERS EMPLOYED IN CARDING ENGINES," upon the condition (amongst
others) that I, the said Joseph Standring Dronsfield, 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 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.
"
NOW KNOW YE, that I, the said Joseph Standring Dronsfield. do

page_text: the same is to be performed, to be particularly described and ascer-
tained in and by the following statement and accompanying Drawings,
that is to say:-
My Invention relates in the first place to apparatus or parts of
apparatus employed in the grinding of carding machine flats. In such
apparatus the flats are fixed to parts which are mounted upon sliding
carriages, whereby the said flats are moved to and fro in contact with a
revolving grinding roller.
In apparatus which has been constructed previously to my said
Invention the said sliding carriages have received motion from a
revolving shaft, which has been mounted above the grinding roller.
I actuate the said carriages by means of a shaft mounted below the
said grinding roller. Excentrics on the said shaft impart a rocking
movement to levers or lever frames, which are mounted below the slides.
Slots or openings are formed in the slides to permit of the connection of
the carriages with the said levers. This connection may be effected by
means of a link, or a pin or projection on the lever may work in a slot
in the carriage or in a part affixed thereto, or a pin, stud, or projection
in or on the carriage may work in a slot in the lever.
If preferred spur quadrants gearing with racks on the said carriages
may be employed in lieu of the said levers or lever frames. Both ends
of each flat are set simultaneously by means of a shaft, upon which are
fixed or formed two excentrics or cams which act upon the parts to
which the flats are fixed. The said shaft is turned by means of a screw
which is mounted in a bearing, which is fitted to swivel, and works in a
nut also fitted to swivel in or on a lever which is fixed to the said
shaft.
A second part of my Invention relates to apparatus or parts of
apparatus employed in the grinding of card rollers. The card roller
to be ground is carried by a frame which is fitted to swivel in or on
bearings at or near the lower part of the framing of the machine. The
upper parts of the ends of the said frame are formed or provided with
bearings for the axle of the card roller, one or both of the said bearings
being adjustable. The upper end of the said frame can be moved
towards the grinding roller by means of a screw. I may situate the
points upon which the said frame swivels nearer to the vertical centro

page_text: line of the grinding roller than the upper bearings which support the
card roller.
And in order that my Inventiom may be fully understood I have
appended hereunto a Sheet of Drawings marked with letters of
reference, corresponding marks indicating the same parts in the various
Figures.
Referring in this place to the said Drawings, Figs. 1, 2, and 3, drawn
about one-fourth of the full size, illustrate the first part of my Invention,
Fig. 1 being an end elevation, and Fig. 2 a side view of so much of a
card-grinding machine as is necessary to be shewn to illustrate my
Invention. In the said Figures A is the upper portion of one of the
end standards of the machine, B is the grinding roller, and C, O, are the
aforesaid sliding carriages. The said carriages are fitted to slide in
V slides planed in the two inclined faces of a saddle a, which is bolted
to the top of the standard, there being a corresponding arrangement at
the other end of the machine not seen in the Drawing. A lever
casting 6 is mounted on the outer boss of the bearing of the grinding
roller axle, the lever being bored and the said boss being turned so that
the boss forms a bearing upon which the said lever can work. A cor-
responding lever is similarly mounted at the other end of the machine.
The said lever is formed with two arms, in which are fixed studs c, c,
which engage with forked studs d, d, which are secured to the feet of
the sliding carriages. A portion of the saddle a is cut away in the left-
hand part of Fig. 1 to shew this connection, but the method of con-
necting the levers with the carriages may be varied as aforesaid. The
effect of this arrangement is that when the said levers are caused to
swivel the said carriages are caused to slide to and fro. A spur pinion e
fixed on the end of the axle of the grinding roller gears with a wheel f,
to which is secured a pinion g, which gears with a spur wheel h, which
is fixed on a shaft i. This shaft extends throughout the length of tho
machine, and is fitted to revolve in suitable bearings in or secured to the
standards. On the said shaft is secured an excentrick, there being also
a corresponding excentric on the other end of the shaft. Each excentric
is connected by means of a rod 1, which is secured to the excentric strap
with one of the two levers b. The effect of this arrangement is that
during the revolution of the grinding roller a slower revolving motion is
imparted to the shaft i, and the excentrics fixed thereon cause the said

page_text: levers to rock, whereby the sliding carriages at both ends of the machine
are caused to traverse to and fro, the corresponding carriages at both
ends of the machine moving in unison.
In some cases I mount the shaft i outside of the framing of the
machine instead of in the central position, as shewn in the Drawings,
and in other cases I mount the wheel and excentric k upon a short
shaft or fixed stud, and I substitute for the shaft i a lower shaft, indicated
by m in Fig. 3. On each end of this shaft is fixed a lever n, which is
connected by means of a rod n' with the corresponding lever b, and one
of the levers n is also connected by a second rod o with the excentric k.
A rocking motion is thus imparted to the shaft m, which in turn imparts
a rocking movement to the said levers b, b.
By suitably varying the forms of the levers and by suitably
arranging the slides in the saddles a the apparatus may be made capable
of grinding more than two flats, or one, two, or more flats and a roller,
as, for example, in some cases I arrange the machine to grind two flats
and one card roller.
Although I prefer to mount the levers b; b, upon bearings concentric
with the axles of the grinding roller I do not confine myself to this
arrangement, as in some cases I mount the said levers upon studs situated
suitably to the circumstances of each case. Upon each of the sliding
carriages C a frame p is fitted to slide towards and from the grinding
roller, the flat to be ground being secured to this frame. A shaft q is
fitted to rock in bearings secured to the backs of the carriages, the said
shaft extending from one carriage to the corresponding carriage at the 2
other end of the machine. On the said shaft are fixed cams or
excentrics r, each of which works between two horns 8, 8, cast upon each
of the frames p, so that when the said shaft is turned in one direction or
the other, the two corresponding frames are moved in unison towards or
from the grinding roller. The shaft q is turned by means of a screw t, a
which is mounted in a swivelling stud u, and works in a nut which is
formed with a shank, which is fitted to swivel in an arm v fixed or
formed on the said shaft. By turning the said screw the card flat may
be moved nearer to or farther from the grinding cylinder. This arrange-
ment is illustrated by Figs. 4 and 5, which are drawn to a larger scale i
than the other Figures.

page_text: roller formed and arranged substantially as herein-before set forth and
indicated.
And, lastly. The combination and arrangement of parts substantially
as and for the purposes set forth and indicated herein-before and by the
accompanying Drawings.
In witness whereof, I, the said Joseph Standring Dronsfield, have
hereunto set my hand and seal, this Twenty-eighth day of April
in the year of our Lord One thousand eight hundred and
seventy-six.
JOSEPH S. DRONSFIELD. (L.S.)
Signed and sealed by the said
Joseph Standring Dronsfield
in the presence of
EDWARD K. DUTTON,
Agent to the Patentee,
3, Princess Street,
Manchester.