CERTAIN IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1855

page_text: LETTERS PATENT to Richard Roberts, of Heaton Norris, in the County of
Lancaster, Machine Maker, and George Coppock, of the same Place,
Manager, for the Invention of "CERTAIN IMPROVEMENTS IN LOOMS FOR
WEAVING
Scaled the 21st December 1855, and dated the 9th July 1855.
PROVISIONAL SPECIFICATION left by the said Richard Roberts and
George Coppock at the Office of the Commissioners of Patents, with
their Petition, on the 9th July 1855.
We, RICHARD ROBERTS, of Heaton Norris, in the County of Lancaster,
Machine Maker, and GEORGE COProCK, of the same Place, Manager, do
hereby declare the nature of the said Invention for "CERTAIN IMPROVEMENTS
IN LOOMS FOR WEAVING" to be as follows:-
Our Invention consists in an improved letting-off motion. To the fulcrum
shaft of the vibrator is attached a lever, connected to a weighted lever, or to a
spring of the usual construction. To the said fulcrum shaft is also fixed a bush,
to which is attached one end of a weighted cord or chain, which passes over a
friction pulley mounted on the same stud as a spur piniou, gearing into a wheel
fixed to the warp beam. When the yarn is too tight the friction cord or band
is slackened, and the yarn is at liberty to unwind off the warp beam until it
regains its proper tension.
Our Invention also consists in an improved picking motion. The side lever is

page_text: supported on a stud passing through a swivel piece connected to the loom side,
thereby allowing the said side lever to move up and down in the usual manner,
and laterally, to suit the action of the picking lever, to which the picking stick
is attached; the shape of the picking lever is such, that the action of the side
lever is more advantageously applied than heretofore.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Richard Roberts and George Coppock in the Great Seal
Patent Office on the 9th January 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, RICHARD
ROBERTS, of Heaton Norris, in the County of Lancaster, Machine Maker, and
GEORGE COPPOCK, of the same Place, Manager, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Ninth day of July, in the year of our Lord One
thousand eight hundred and fifty-five, in the nineteenth year of Her reign.
did, for Herself, Her heirs and successors, give and grant unto us, the said
Richard Roberts and George Coppock, Her special license that we, the
said Richard Roberts and George Coppock, our executors, administrators, and
assigns, or such others as we, the said Richard Roberts and George Coppock,
our executors, administrators, and assigus, 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 "CERTAIN IMPROVEMENTS IN LOOMS FOR WEAVING,"
upon the condition (amongst others) that we, the said Richard Roberts and
George Coppock, by an instrument in writing under our hands and seals,
or under the hand and seal of either of us, 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 Scal-Patent
Office within six calendar months next and immediately after the date of the
said Letters Patent.
NOW KNOW YE, that we, the said Richard Roberts aud George Coppock,
do hereby declare the nature of our said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in and
by the following Specification thereof, reference being had to the accom-
panying Drawing (that is to say) :-

page_text: The nature of our Invention consists in an improved arrangement of parts
for letting the yarn off the warp beam; also in an improved combination
of parts for picking or throwing the shuttle from one shuttle box to the other.
We have in the said Drawing shewn how our improvements may be per-
formed, similar parts in the different views being marked with corresponding
letters of reference.
Figure 1 is a side elevation of a loom to which our improvements are
applied; and Figure 2 is a front elevation of part of the same. at is the
crank shaft; b, the connecting links; c, the lay or batten; d, the tappet shaft;
e, the warp beam; and f, the vibrator rail. These and the other ordinary parts
requisite to complete the loom are made as usual. To the warp beam e is
connected a spur wheel g, which gears into the pinion h, fixed to the friction
pulley i, the pinion and pulley revolving on a stud fixed to the loom side, or
they may be fixed on a shaft. One end of the cord or chainj is made fast to
the framing; it is thence taken once or more times round the friction pulley i,
and then attached to the bush k, which is connected to the fulcrum shaft f¹ of
the vibrator f by the clutch box f; the lever f³ is also fixed to the shaft f¹,
and this lever is acted upon by the spring f, or by a weight; this weight or
spring keeps the warp, which is indicated by the line 7, to the required degree
of tension in the usual manner.
When the stress on the warp becomes sufficiently great to overcome the
resistance of the spring f (or the weight which may be used instead), the
vibrator rail is drawn forward, thereby slackening the cord j, and allowing
the warp beam to be turned partly round by the pull of the warp; but as soon
as the requisite quantity of the warp has been drawn off the warp beam, the
spring fagain tightens the cord or band j, and prevents the drawing off of
the warp until the tension thereof again draws forward the vibrating rail. In
light goods the wheel and pinion may be dispensed with, and the friction
pulley is then connected to the warp beam.
The improvements in the picking motion consist of the following parts:
The tappet shaft & has at each end a lever m, with a bowl n to act on the side
levers o, in the ordinary manner. These side levers, instead of being jointed
to studs, as heretofore, are each jointed to a swivel piece p, supported in a
bush s, which is bolted to the loom side, as shewn detached at Figure 3. The
object of this is to allow the side levers to move laterally when depressed by
the action of the bowl n. The end of the side lever acts upon the picking
lever 9, shewn best in Figure 2; the shape of the picking lever being such,
that the action of the side lever is more advantageously applied than hereto-

page_text: fore. The picking stick r is secured to the picking lever, and is connected to
the parts for giving motion to the shuttle in the ordinary manner.
Having thus described the nature of our Invention, and the manner of
performing the same, we would remark, that the mode of constructing our
improvements may be modified without departing from the peculiar character
thereof; and that what we claim is,-
First, the improved arrangement of parts for letting the yarn off the warp
beam, as described.
Secondly, supporting the side levers of the picking motion in swivel pieces,
or in such wise that they are capable of moving laterally and vertically, as
described.
And, lastly, the improved shape of the picking lever where it is acted upon
by the side lever, as shewn at g, in Figure 2.
In witness whereof, we, the said Richard Roberts and George Coppock,
have hereunto set our hands and scals, the Seventh day of January, in
the year of our Lord One thousand eight hundred and fifty.