IMPROVEMENTS IN WEFT GRATES USED IN LOOMS FOR WEAVING
Year: 1876

page_text: LETTERS PATENT to Samuel Cook, of Bury, in the County of Lancaster,
Machinist, for the Invention of "IMPROVEMENTS IN WEFT GRATES USED IN
LOOMS FOR WEAVING."
PROVISIONAL SPECIFICATION left by the said Samuel Cook at the Office of
tlie Commissioners of Patents on the 28th July 1876.
"IMPROVE-
SAMUEL COOK, of Bury, in the County of Lancaster, Machinist.
MENTS IN WEFT GRATES USED IN LOOMS FOR WEAVING."
Steel weft grates hitherto have been made in one piece out of sheet steel, the
openings being punched out of the solid plate and the bars left in the plate so as
to form a grate, betwixts the bars of which the prongs of the weft fork enter and
operate upon the weft when the loom is working. The said bars have to be
rounded on the edges and made perfectly smooth so as not to damage the weft,
and hitherto there has been great difficulty and cost in files and labour in accom-
plishing this. Now by my Invention this difficulty is overcome, and I am enabled
to produce a perfectly smooth and easy working grate, which is of great value in
weaving all kinds of fabrics.
My Invention consists of a steel plate as before, into which I punch an opening
or frame into which frame I insert loose bars inade of steel, iron, or brass, rounded
so as to be perfectly smooth.
To accomplish this I cut or punch slits or openings in the top and bottom of
the frame corresponding to the thickness of the bars which I mean to insert, and
then rivet up the ends of the same so as to make a firin and substantial grate.
I may also make brass weft grates out of sheet brass and insert loose bars in the
same way as for steel grates.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Samuel Cook in the Great Seal Patent Office on the 27th January
1877.
SAMUEL COOK, of Bury, in the County of Lancaster, Machinist.
IN WEFT GRATES USED IN LOOMS FOR WEAVING."
"IMPROVEMENTS
Steel weft grates hitherto have been made in one piece out of sheet steel, the
openings being punched out of the solid plate and the bars left in the plate so as
[Price 4d.]

page_text: to form a grate, betwixt the bars of which the prongs of the weft fork enter and
operate upon the weft when the loom is working. The said bars have to be rounded
on the edges and made perfectly smooth so as not to damage the weft, and hitherto
there has been great difficulty and cost in files and labour in accomplishing this.
Now by my Invention this difficulty is overcome, and I am enabled to produce a
perfectly smooth and easy working grate, which is of great value in weaving all
kinds of fabrics.
My Invention consists of a steel plate as before, into which I punch an opening
or frame, into which frame I insert loose bars made of steel, iron, or brass, rounded
so as to be perfectly smooth.
To accomplish this I cut or punch slits or openings in the top and bottom of the
frame corresponding to the thickness of the bars which I mean to insert, and then
rivet up the ends of the saine so as to make a firm and substantial grate. I also
make brass weft grates out of sheet brass, and insert loose bars in the same way as
for steel grates.
This Invention will be clearly understood by reference to the accompanying
Sheet of Drawings, with the figures and letters of reference marked thereon, in
which Fig. 1 is a view of one of the plates punched for receiving the loose bars,
and Fig. 2 a view of a grate with the bars rivetted in position.
In the Figs. a represents the steel plate in which are punched slits or openings b,
into which are inserted the bars c, inade of steel, iron, or brass, rounded so as to be
perfectly smooth.
I cut or punch the slits or openings b in tho. top and bottom of the frame of the
plate a corresponding to the thickness of the bars c which I mean to insert and
rivet up the ends of the same, so as to make a firm and substantial grate. I also
make brass weft grates out of sheet brass, and insert loose bars in the same way as
for steel grates.
Having now described the nature and particulars of my said Invention, and the
manner in which the same is to be perforined, I desire it to be understood that I
claim the making of weft grates with loose bars as herein described, whether the
samo be inade of steel or brass or other inctul.
In witness whereof, I, the said Samuel Cook, have hereunto set my hand and
seal, this Twenty-fifth day of January, in the year of our Lord One thou-
sand eight hundred and seventy-seven.
11
-
within named Samuel Cook, in
the presence of
G. SEPTIMUS HUGHES,
Patent Agent,
Manchester.
SAMUEL COOK. (L.S.)