CERTAIN IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1853

page_text: LETTERS PATENT to George Coppock, of Heaton Norris, in the"
County of Lancaster, Manager to Messieurs Williamson and
Roberts, of Heaton Norris aforesaid, Machine Makers, for the
Sealed the 27th October 1853, and dated the 14th May 1853.
PROVISIONAL SPECIFICATION left by the said George Coppock at
the Office of the Commissioners of Patents, with his Petition, on
the 14th May 1853.
I, GEORGE COPPOCK, of Heaton Norris, in the County of Lancaster,
Manager, do hereby declare the nature of the said Invention for
"CERTAIN IMPROVEMENTS IN LOOMS FOR WEAVING" to be as follows:-
My Invention consists in an improved combination of parts for
throwing the shuttle from one shuttle box to the other; this is effected
in the following manner:-On each end of the tappet shaft is fixed a
cam or wiper which acts on a bowl projecting from a horizontal shaft,
to the end of which is attached an adjustable slot lever, the slot of
which fits on a stud projecting from the socket of the picking stick; by
this means every revolution of the tappet shaft causes the slot levers to

page_text: act on the picking sticks, and thereby throw the shuttle across the shed.
I prefer to make the tappet shaft revolve in the same direction as the
crank shaft, and this is effected by having a carrier wheel between the
pinion on the crank shaft and the wheel on the tappet shaft; but I do
not limit myself to this mode of construction, as the shaft on which the
slot lever is fixed may, in some cases, be driven direct from the crank
shaft. The object of my Invention is to dispense with the straps by
which the picking levers have hitherto been worked. I wish also to
point out, that by having a carrier wheel 'between the pinion on the
crank shaft and the wheel on the tappet shaft the relative positions of
the two shafts can be easily adjusted, thereby regulating with facility
the picking motion to the throw of the cranks.
The socket of the picking stick may also be made with a slot or
groove into which a stud projecting from a lever on the picking shaft
enters.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed. by the said. George Coppock .in the. Great Seal Patent
Office, on the 14th November 1853..
TO, ALL TO WHOM THESE PRESENTS SHALL COME, I.
GEORGE COPPOCK, of Heaton Norris, in the County of Lancaster,
Manager to Messieurs Williamson and Roberts, of Heaton Norris
aforesaid, Machine Makers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fourteenth day of May, in the year
of our Lord One thousand eight hundred and fifty-three, in the six-
teenth year of Her reign, did,' for Herself, Her heirs and successors,
give and grant unto me, the said George Coppock, Her special
licence that I, the said George Coppock, my executors, administrators,
and assigns, or such others as I, the said George Coppock, my execu-
tors, administrators, and assigns, should at any time agree with, and
uo others, from time to time and at all times thereafter' during the
term therein expressed, should and lawfully might make, use, exercise,

page_text: and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for. "CERTAIN
IMPROVEMENTS IN LOOMS FOR WEAVING," upon the condition (amongst
others) that I, the said George Coppock, by an instrument in writing
under my hand and seal, 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 George Coppock, do hereby
déclare 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 (that is to say):
My Invention consists in certain improved combinations of parts for
actuating the picking sticks of looms whereby the picking straps usually
employed are dispensed with, also in making the tappet shaft revolve in
the same direction as the crank shaft; and in order that my Invention
may be fully understood, and readily carried into effect, I will proceed
to describe the means pursued by me, reference being had to the annexed
Drawing, and to the letters and figures marked thereon.
i,
DESCRIPTION, OF THE DRAWING.
'
Fig 1, is a side elevation of a-loom to which my improvements
are applied. Fig. 2, is a front view of the same;. a, is the crank
shaft, the tappet shaft; c, the connecting links; 'd, the lay swords.
and e; the lay bottom, all of which are similar to those in generál use.
At each end of the tappet shaft are fixed the cams' or wipers f, and f',
which as the tappet shaft revolves come against and depress the conical
antifriction rollers.g, and g', mounted. on studs projecting, from. the
horizontal shafts h, and h, which are supported in bearings -attached to
-the loom sides, as seen best in Fig. 2. To the shafts h, and h; are
also fixed: the toothed plates, the teeth of which enter between
similar.teeth.on the slot levers i; and .- These slot levers fit on the anti-
friction rollers j, and 7, mounted on studs projecting from the pieces k,
and, into which the picking sticks 7, and are bolted. The object

page_text: of the teeth in the plates, and lever i, is to enable the relative positions
of the lever i, and roller g, to be changed with facility. The picking
sticks 1, and l, are supported on studs projecting from the brackets m
and m', fixed to the cross shaft d', of the lay swords d, in the usual
+manner. In Fig 1, and 2, the various parts are shewn in the posi-
tions they occupy before the pick is given, and the shuttle is supposed
to be at the left-hand side of the loom; the cam or wiper f, is close
.upon the antifriction roller g; consequently, as soon as the tappet shaft
b, has performed a small portion of a revolution, the cam or wiper f
depresses the roller g, and brings the slot lever i, and picking stick 1,
into the positions shewn by dotted lines in Fig. 2, thereby throwing
the shuttle to the right-hand side of the loom. As soon as the pick
has been given the picking stick and parts in connection therewith are
.brought back to their original positions by a strap and spring attached
to the under side of the pieces k, and ke¹, or by any of the usual con-
trivances for that purpose. The cams or wipers f, and f', are fixed
opposite each other on the shaft b, in order that the picking sticks may
be acted upon alternately. By the above-described combination of
parts it is evident that no picking straps are required; consequently, the
expence of the same, and the time required for setting them to the
proper length when they have become stretched from use, are saved.
In Figs. 3, and 4, I have shewn another combination of parts for
effecting the same object; in these views the stud with the antifriction
roller j, is fixed to the lever i, and the slot in which the antifriction
roller fits is made in the piece k, to which the picking stick 1, is
attached. The shaft, remains the same as in Fig 1, and 2, and
is put in motion in the same manner by the cam or
tappet shaft b, acting on the conical antifriction roller g. On referring
to Fig, 1, it will be seen by the arrows on the dotted circles a', and
6', that the tappet shaft revolves in the contrary direction to the crank
.shaft, as is customary in looms of the usual construction; this arrange-
ment renders it necessary to have the antifriction roller g, at the left-
.hand side of the tappet shaft; but ou referring to Fig. 5, it will be
seen that by introducing the carrier wheel 6 between the wheels a', and
b³, the tappet shaft will then revolve in the same direction as the crank
wiper f, on the

page_text: shaft, thereby allowing the antifriction roller g, to be placed to the
right-hand side of the shaft b; by this means the shaft h, is considerably
reduced in length, and consequently its strength is increased. By
introducing the carrier 62, it is also more casy to vary the relative
positions of the crank and tappet shafts.
Having thus described the nature of my Invention, and the manner
of performing the same, I wish it to be understood that I do not limit
myself to the details herein set forth, as the same may be varied without
leparting from the peculiar character of my Invention; but what I
claim is, the improved combinations of parts herein-before shewn and
described for actuating the picking sticks of looms without the aid of
picking straps; also, making the tappet shaft revolve in the same
direction as the crank shaft for the purposes herein-before described.
In witness whereof, I, the said George Coppock, have hereunto
set my hand and seal, this Twelfth day of November, One
thousand eight hundred and fifty-three.
GEO. COPPOCK. (L.S.)