TOMS IN POWER LOOMS FOR WEAVING
Year: 1857

page_text: LETTERS PATENT to William Todd and Jacob Todd, of Heywood, in the
County of Lancaster, Spinners and Manufacturers, for the Invention of
Car TOMS IN POWER LOOMS FOR WEAVING"
on the 11 1ebruary 1897.
We, WILLIAM TODD and JACOB TODD, of Heywood, in the County of
Lancaster, Spinners and Manufacturers, do hereby declare the nature of our
said Invention for "CERTAIN IMPROVEMENTS IN POWER LOOMS FOR WEAVING," to
be as follows::.
Our Invention relates, first, to a novel method of actuating the "picking rod'
employed for propelling the shuttle, and consists in a certain arrangement of
mechanism designed for the purpose of actuating the said rod upon the shuttle
entering the shuttle box. The several parts are so contrived that as the shuttle
enters the box it presses back the ordinary "swell," to which is connected a
spring in communication with a sliding rod or projecting finger; also upon the
"crank arm." is placed a stud, so situated as to strike the projecting finger or
rod in connection with the "swell" when the shuttle enters the box and presses
back the said "swell" and finger, and thereby cause any of the "picking
motions" in ordinary use to be put in motion to propel from one box to tho

page_text: "
other. It will be evident that by this arrangement the "picking motion " can
only be actuated where the shuttle completes its "race" and presses the
"swell" in the box, as when such is not the case the stud on the "crank arm
will work clear of the projecting finger in connection with the said "swell,"
and consequently the "picking motion will not be worked thereby.
Secondly, our Invention relates to a novel method of working the ordinary
"weft fork" stopping motion, which consists in placing it in connection with
the aforesaid apparatus, and working the "weft hammer" by rods in con-
nection with the "swell and stud. on the crank.arm."
Thirdly, our improvements in combining the "crank arm" with the "slay"
by two centres or joints instead of one, and employing a connecting lever
between the two. The end of tho crank arm is attached to the upper end of
the lever, the connection with the "slay" being made at a point lower down
the lever, the lower end of which projects downwards towards a stop or "latch"
placed at the end of a lever, at the other, end of which the "stop rod" bears.
This stop prevents the connecting lever being forced too far, out by the crank
arm when the loom is in proper action, but when an accident occurs.the "stop
rod" strikes the "frog," thus throwing up the end upon which it bears, and
forces down the latch or stop at the opposite end of the lever, thus removing
the bearing of the projecting end of the connecting lever, whereby the crank
arm is allowed to continue its revolution, leaving the slay stationary.
Fourthly, the Invention consists in the application of a lever to the back of
cach shuttle box, having an incline formed on the "picker," and to the back
of which is secured one end of the ordinary swell spring," so that as the
picker strikes the incline extra pressure will be exerted upon the "swell," and
consequently a gradual "break" upon the shuttle, instead of using the ordinary
"check strap," &c. for such purpose, or a similar effect will be produced by
placing at the end of each box two springs in the form of a fork or wedge, so
applied that the "picker" may strike between the fork or wedge, and become
gradually checked.
And lastly our improvements consist in regulating the tension of the yarn
or-warp by passing a band round the warp beam, one end of which is secured
to the framing by an intermediate spring, and the other to the short end-of a
lever in connection.. with, the ordinary vibrating motion; for regulating the
tension of the yarn upon the long. end of the lever beyond the fulcrum I employ
a sliding weight, by which I can regulate the vibration of the yarn guide at the
same time, and equally with the: yarn beam! **

page_text: :
السلام
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Todd and Jacob Todd in the Great Seal Patent
Office on the 11th August 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
TODD and JACOB TODD, of Heywood, in the County of Lancaster, Spinners and
Manufacturers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eleventh day of February, in the year .of our
Lord One thousand eight hundred and fifty-seven; in the twentieth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said William Todd and Jacob Todd,. Her especial license that we, the
said William Todd and Jacob Todd, our executors, 'administrators, and assigns;
or such others as we, the said William Todd and Jacob Todd, our 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 CERTAIN :IMPROVEMENTS IN LOOMS FOR WEAVING,".
upon the condition; amongst others, that we, the said' William "Todd and
Jacob Todd, by an instrument in writing under our hands and scals, or under.
the hand and seal of one of us, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same was to be per-.
formed, 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 Jacob Todd, do hereby declare the
nature of our said Invention, and in what manner the same, is to be per-.
formed, to be particularly described and ascertained in. and by the following,
statement and accompanying Drawings, that is to say:
Our Invention relates, first, to a novel method of actuating the. " picking
rod" employed for propelling the shuttle, and consists in a certain.arrangement
of mechanism designed for the purpose of actuating the. said rod upon the
shuttle upon the shuttle entering the box. The several parts are so contrived
that as the shuttle enters the box it presses back the ordinary "swell,". to
which is connected a spring in communication with a sliding rod or, projecting,
finger; also upon tlie "crank arm" is placed a stud, so situated as to strike:
the projecting finger or rod in connection with the swell when the shuttle
enters the "box" and presses back the said "swell" and finger, and thereby

page_text: cause any of the picking motions in ordinary use to be put in action to propel
the shuttle from one box to the other. It will be evident that by this arrange-
ment the "picking" motion can only be .actuated when the shuttle completes
its race and presses the swell in the box, as when such is not the case the
stud on the crank arm will work clear of the projecting finger in connection
with the said swell, and consequently.the picking motion will not be worked
thereby.
;
Secondly, our Invention.relates to n novel method of working the ordinary
"weft workstopping.motion, which consists in placing it in connection with
the aforesaid apparatus, and working the "weft hammer" by rods in con-
nection with the swell" and stud on the "crank arm."
Thirdly, our improvements consist, in combining the "crank arm" with the
"stay" by two centres or joints instead of one, and employing a connecting
lever between the two.. The end. of the crank arm is attached to the upper
end of the lever, the connection with the slay being made at a point lower down
the lever, the lower end of which projects downwards towards a stop or latch
placed at the end of a lever, at the other end of which the stop rods bears; the
stop rod prevents the connecting lever. being forced too far out by the crank
arm when the loom is in proper action; but when an accident occurs the
stop rod" strikes.the "frog," thus throwing up the end upon which it bears,
and forces down the latch or stop at the opposite end of the connecting lever,
whereby the crank arm is allowed to continue its revolution, leaving the slay
stationary.
Fourthly, the Invention consists in the application of a lever to the back of
each shuttle box, having.an incline formed on the "picker," and to the back
of which is secured one end of the ordinary "swell spring," so that as the
picker strikes the incline extra pressure will be exerted upon the "swell,"
and, consequently a gradual break, upon the shuttle, instead of using the,
ordinary check strap, &c. for such purposes, or a similar effect will be produced.
by placing at the end of each box two springs in the form of a wedge or fork,.
so applied that the "picker" may strike between the fork and become
gradually checked.
And, lastly, our improvements consist in regulating the tension of the yarn,
or warp, by passing a band or cord around the warp beam, one end of which.
is secured to the framing by an intermediate spring, and the other to the short,
end of a lever in connection with the ordinary vibrating motion for regulating.
the tension of the yarn; upon the long end of this lever beyond the fulcrum
I employ a sliding weight, by means of which I can regulate the vibration of
the yarn guide, aud equally with the yarn beam.
'

page_text: .
In order. that our Invention may be more readily understood and explained
in detail, I have hereunto attached a Sheet of Drawings, made upon a scale
of about two inches and, a quarter to the foot, and having similar letters
of reference marked upon corresponding parts of the apparatus in all the
Figures.
Fig. 1 is a side elevation of a loom, having our improvements applied; this
Figure shews the lever and tumbler upon the slay for actuating the picking
motion; I employ a spring or metallic band upon the crank arm for striking
the lever in connection with the "swell;" the method of regulating the tension of
the warp or yarn is also seen in this Figure. Fig. 2 is a plan view of one side
of the loom, shewing more clearly the manner in which motion is imparted to
the picking rod by means of the spring or, the crank arm coming into contact
with the aforesaid lever; this Figure also exhibits the motion I employ for
actuating the "picking rod" by means of the tappets,' ono being upon the
tumbler, and the other upon a shaft giving motion to the "picking rod."
Fig. 3 is side view shewing the tumbler in connection with the levers actuated
by the crank arm for working the weft hammer, and stopping the loom when
the weft breaks; and Fig. 4 is a side view of a novel arrangement of picking
apparatus.
.
In Fig. 1, a, a, is the framing of the loom, and 6, the slay sword, upon
which is secured the cranked lever c, one end of which presses against
the "swell" c', the opposite end being moved to or from the crank armid;
according to the action of the "swell" upon the cranked arm d, is the spring
or band e, which when the lever is pressed against the crank arm by the
action of the shuttle upon the swell, strikes the said lever c, taking it down-
wards with the motion of the crank arm; as the lever is struck down it causes
the tumbler f to partake of a similar motion, and bring the stud or tappet g
into contact with the tappet h, upon the shaft i giving motion to the picking "
rod ; or a similar motion may be obtained by fixing the tappet g upon the
slay swords, and imparting a reciprocating motion to the shaft i, by means of
a strap or band actuated from the ordinary rocking shaft, as seen in Fig. 4.
On the tumbler being drawn to its former place by the spring f', that side of
the loom nearest to the "weft fork motion," a connecting rod is attached to
the tumbler f, and to the lever m; which as the tumbler is brought down
moves the horizontal lever n, thus imparting a vibratory motion to the "weft
hammer" o in a more simple manner than at present for regulating the
tension of the warp; p is the beam or roller upon which the yarn is wound,
and g is a band or rope secured at one end to the framing; the band passes
roun the beam, and the opposite end is attached to the leyer r, upon which

page_text: weights s are placed, so as to regulate the drag or break upon the beam p, and
consequently upon the yarn; the action of the mechanism for actuating tho
picking motion will be more clearly understood upon reference to the Drawing
and the following description of the actions of various parts. Supposing the
shuttle to have entered the box, the swell c will become pressed outwards, the
lever c being pressed against the crank arm by means of the "swell," will be
struck by the spring e and carried downwards; thus the tumbler f will also be
forced down; and the tappet g will be brought in contact with the tappet h on the
shaft i; and motion will thus be given to the picking rod, and the shuttle pro-
pelled to the opposite box; which having taken place, the spring f¹ will bring
the tumbler to its former position; and thus keep the cranked lever c against
the "swell." In the instance of 'the shuttle not completing its race, the
"swell" will not press the lever c against the cranked. arm, so that it will not
be struck by the spring, and consequently the "picking motion will not be
brought into action, the motion in connection with the weft hammer" being
then employed to effect the stoppage of the looin.: :
Having now described the nature of our said Invention, together with the
imanner of performing the same, we wish it to be distinctly understood that we
claim, first, the novel application, employment, and use of the aforesaid
mechanism, for causing the picking rod to work only when the shuttle com-
pletes its race and enters the box, and the apparatus whereby the absence of
the shuttle causes the stoppage of the loon, together with the general con-
struction and arrangement of the various parts for effecting the more perfect
action of the loom; as herein-before more particularly described, set forth, and
fully exhibited in the Drawings attached.
In witness whereof, I, the said Jacob Todd, have hereunto set my
hand and seal, this Tenth day of August, in the year of our Lord
One thousand eight hundred and fifty-seven.
JACOR TODD
JACOB TODD. (..)