IMPROVEMENTS IN DRAWING AND SPINNING FRAMES
Year: 1873

page_text: LETTERS PATENT to Arthur Greenwood, of Leeds, in the County of
York, Engineer, for the Invention of "IMPROVEMENTS IN DRAWING
AND SPINNING FRAMES."
Sealed the 2nd September 1873, and dated the 14th March 1873.
PROVISIONAL SPECIFICATION left by the said Arthur Greenwood at
the Office of the Commissioners of Patents, with his Petition, on
14th March 1873.
1, ARTHUR GREENWOOD, of Leeds, in the County of York, Engineer,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
DRAWING AND SPINNING FRAMES," to be as follows:-
This Invention relates to improvements in the drawing and spinning
frame, whereby its construction will be somewhat simplified, and the
removal of the pressing rollers for the purpose of cleaning the same will
be greatly facilitated.
In silk spinning it is found practically that the adjustment of the
reach to suit varying lengths of fibre is seldom or never required. I

page_text: propose therefore, in place of the several pairs of carrying rollers now
employed to use but one pair of these rollers and an adjustable tension
plate for supporting the roving on its passage to the drawing rollers.
This plate is slightly curved and polished on its surface.
The pairs of pressing rollers of both the back and front fluted rollers
instead of being mounted in stands or U bars, as heretofore, I now
propose to carry in saddle pieces, which are hinged to the main framing,
and are weighted like the ordinary detached saddle pieces. This arrange-
ment greatly facilitates the taking out of the pressing rollers for cleaning,
as by simply tipping their saddle on its hinge the pressing rollers will
drop out of place.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Arthur Greenwood in the Great Seal Patent Office
on the 13th September 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ARTHUR
GREENWOOD, of Leeds, in the County of York, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fourteenth day of March, in the year of
our Lord One thousand eight hundred and seventy-three, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Arthur Greenwood, Her special licence that I,
the said Arthur Greenwood, my executors, administrators, and assigns, or
such others as I, the said Arthur Greenwood, 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 DRAWING AND SPINNING
FRAMES," upon the condition (amongst others) that I, the said Arthur
Greenwood, 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
.
"

page_text: months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Arthur Greenwood, 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, reference being had to the Drawing hereunto
annexed, and to the letters and figures marked thereon (that is to
say) :—
This Invention relates to improvements in the drawing and spinning
frame, whereby its construction will be somewhat simplified, and the
removal of the pressing rollers for the purpose of cleaning the same
will be greatly facilitated,
In silk spinning it is found practically that the adjustment of the
"reach" to suit varying lengths of fibre is seldom or never required. I
propose therefore as an improvement in the construction of silk spinning
frames, in place of the several pairs of carrying rollers now employed, to
use but one pair of these rollers, and to provide an adjustable tension
plate for supporting the roving on its passage to the drawing rollers.
The pairs of pressing rollers of both the back and front fluted rollers,
instead of being mounted in stands or U bars, as heretofore, I now
propose to carry in saddle pieces, which are hinged to the main framing,
and are weighted like the ordinary detached saddle pieces.
In the accompanying Drawings Fig. 1 shews in transverse sectional
elevation so much of a silk spinning frame as will serve to explain the
nature of my Invention; and Fig. 2 is a partial front elevation of the
same.
A, A¹, are the back or retaining rollers; the roving passes through
these rolls over a curved friction plate B. This plate is adjustable by
means of the screws b, so as to give more or less friction upon the “roving.”
The roving then passes through a pair of carrying rollers C, C₁, placed
immediately over the front drawing rollers D, D', and is by them drawn
out to the desired length, and twisted by the spindle F. E is a thread
plate for guiding the thread over the centre of the spindle. e, e, are
similar guides for the roving to pass through. The "pressings" for the
rolls A and D are carried in saddle pieces G, H, which are hinged on
rods g, h, fixed to the main framing I of the machine. Each are connected

page_text: by a link rod K to the weighted levers K'. This arrangement of the
saddle pieces, it will be seen, greatly facilitates the taking out of the
pressing rollers for cleaning, as by simply tipping the saddles on their
hinges the pressing rollers will drop out of place.
Having now set forth the nature of my Invention of "Improvements
in Drawing and Spinning Frames," and explained the manner of carrying
the same into effect, I wish it to be understood that under the above in
part recited Letters Patent I claim,—
First. The arrangement of hinged saddle pieces, as above described, for
supporting the top and bottom pressing rollers.
Second. The adjustable friction plate in combination with a fixed
"reach," as above described.
In witness whereof, I, the said Arthur Greenwood, have hereunto
set my hand and seal, the Tenth day of September, in the year of
our Lord One thousand eight hundred and seventy-three.
TRTHD