IMPROVEMENTS IN PICKERS, AND IN THE MAWOSAGE THERAP MADANG on ArrARANCS MATTEOR PRO IN THE MEANS OR APPARATUS EMPLOYED IN THE MANUFACTURE THEREOF
Year: 1863

page_text: LETTERS PATENT to John Burwin, of the Firm of Thomas Burwin and
Sons, of Keighley, in the County of York, Sattle and Picker Manu-
facturers, for the Invention of "IMPROVEMENTS IN PICKERS, AND IN THE
MAWOSAGE THERAP
MADANG on ArrARANCS
MATTEOR
PROVISIONAL SPECIFICATION left by the said John Burwin at the
Office of the Commissioners of Patents, with his Petition, on the 6th
April 1863.
I, JOHN BURWIN, of the Firm of Thomas Burwin and Sons, of Keighley,
in the County of York, Shuttle and Picker Manufacturers, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN PICKERS, AND IN THE
MEANS OR APPARATUS EMPLOYED IN THE MANUFACTURE THEREOF," to be as
follows:-
This Invention relates to pickers made of sizing or prepared animal hides,
which heretofore have been made with sharp angles on account of the method
adopted in their manufacture, and which sharp angles are very objectionable
in use, as they cut the straps and catch the weft, which is thereby damaged.
My improvements consist in rounding or removing these sharp angles, which
I effect by means of dies or moulds properly formed, into which the pickers

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Burwin in the Great Seal Patent Office on the
5th October 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
BURWIN, of the Firm of Thomas Burwin and Sons, of Keighley, in the County
of York, Shuttle and Picker Manufacturers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Sixth day of April, in the year of our Lord
One thousand eight hundred and sixty-three, in the twenty-sixth year of
Her reign, did, for Herself, Iler heirs and successors, give and grant unto
me, the said John Burwin, Her special licence that I, the said John
Burwin, my executors, administrators, and assigns, or such others as I,
the said John Burwin, 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 PICKERS, AND IN THE MEANS OR APPARATUS EMPLOYED IN THE
MANUFACTURE THEREOF," upon the condition (amongst others) that I, the said
John Burwin, 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 John Burwin, 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 follow-
ing statement and the accompanying Sheet of Drawings (that is to say) :-
This Invention relates to pickers made of sizing or prepared animal hides,
which heretofore have been made with sharp angles on account of the method
adopted in their manufacture, and which sharp angles are very objectionable in
use, as they cut the straps and catch the weft, which is thereby damaged.

page_text: My improvements consist in rounding or removing these sharp angles, which
I effect by means of dies or moulds properly formed, into which the pickers
are placed, and pressure applied thereto by lever, screw, or other suitablo
means of applying pressure.
The means or apparatus I employ for effecting this improvement will be
readily understood by reference to the accompanying Sheet of Drawings, where
Fig. 1 is a plan (with the top block and screw removed), and Fig. 2 is a
section of a portion thereof (with the top block and screw in its place), taken
through the line A, B ; Fig. 3 is a plan, Fig. 4 is a side view, and Fig. 5 is a
section of the improved picker, shewing the corners thereof rounded or the
sharp angles removed. C is a bed plate of metal, on which the moveable parts
of the apparatus are placed and operated; D is the bottom block, having a
projection D', which is similar in form to the inside of the picker; E, F,
are a pair of inclined slides, fitting into a groove of the bed-plate; G, H, I, J,
are dies or moulds, fitted and attached to the slides E, F, and resting upon
the bottom block; K is a slide block, formed to fit to the slides E, F, and to
which is attached another die L. Also at the opposite end a screw M is
attached by a strap K' and collar M². This screw passes through a nut N,
fixed to the bed plate, and is operated at the end by a winch or lever arms, or
a wheel and handle may be used for the purpose. P is the top block, with a
screw for pressing it down on the dies; R is a small die, which slides in a
recess of the projection D', and is forced out by the wedge P' on the top block;
S is a plug, passing through the hole of the picker, pressed up by a spring
T, to allow for the various lengths of pickers.
It will now readily be seen that when the top block P is raised and the
dies are open, as shewn, an ordinary square-edged picker in a soft state
may be placed on the projection D', the block P lowered, and the slide
block K screwed up, when the dies will all be pressed against the picker,
rounding the corners or pressing the angles thereof to the form shewn in the
section and detail Drawings. On reversing the screws the blocks and dies
will be removed from the picker, which may then be taken away and replaced
with another picker to undergo the same operation, and so on; thus by means
of this apparatus the angles of pickers are removed, and thereby less damage
is done to the straps and weft in the process of weaving.
Having thus described the nature of my said Invention, and the manner in
which the same is performed, I would have it understood that I do not
confine myself to the precise details of construction or arrangement as herein
set forth; but what I claim as of my Invention is, the means or method of

page_text: rounding or removing the sharp angles of pickers by dies or moulds, sub-
stantially as herein described, and shewn in the accompanying Sheet of
Drawings.
In witness whereof, I, the said John Burwin, have hereunto set my hand
and seal, this Third day of October, One thousand eight hundred and
sixty-threc.
Signed, sealed, and delivered,
by the within-named John
Burwin, in the presence of
W*. TASKER,
Patent Agent,
Halifax.
JOHN BURWIN. (L.S.)