IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1866

page_text: LETTERS PATENT to Robert Clayton, Engineer, James Raper, and John
Goulding, Machinists, and William Howarth, Dentist, all of Bradford, in
the County of York, for the Invention of "IMPROVEMENTS IN LOOMS FOR
WEAVING."
Sealed the 24th May 1867, and dated the 11th December 1866.
PROVISIONAL SPECIFICATION left by the said Robert Clayton, James
Raper, John Goulding, and William Howarth at the Office of the
Commissioners of Patents, with their Petition, on the 11th December
1866.
We, ROBERT CLAYTON, Engineer, JAMES RAPER, and JOHN GOULDING,
Machinists, and WILLIAM HOWARTH, Dentist, all of Bradford, in the County
of York, do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN LOOMS FOR WEAVING," to be as follows:-
Our Invention consists in stopping the tappet shaft of swivel looms while
the swivel shuttles are producing the pattern, and in again starting the tappet
shaft while weaving the plain or figured ground between the patterns, or
when weaving the ground during the process of producing the pattern.
In performing our Invention we place a cam on a crank shaft acting on a
lever which rises at every pick and moves the swivel shuttles into position
when required for weaving the pattern, at the same time the catch box on the
tappet shaft is thrown out of gear to stop the said tappet shaft. The above
lever is connected to a second lever, which is actuated when required by the

page_text: jacquard; this second lever is keyed on a shaft. to which an elbow lever is
fixed, one arm of which lifts a bar for throwing the catch box on the tappet
shaft in and out of gear, the other arm is connected to a lever by which the
shaft for moving the swivel shuttle frame laterally and vertically is actuated;
upon this last-mentioned shaft is another lever for moving the swivel racks
up and down and in and out of gear. The elbow lever above referred to,
instead of actuating the catch box bar, as described, may be connected to
another elbow lever for obtaining the same results. The bar or elbow lever
described must be weighted to counterbalance the swivel racks and shuttles
so as to hold them up when required. Our improvements are applicable to
looms for weaving various fabrics either with or without swivel shuttles.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Robert Clayton, James Raper, John Goulding, and William
Howarth in the Great Seal Patent Office on the 11th June 1867.
TO ALL. TO WHOM THESE PRESENTS SHALL COME, we, ROBERT
CLAYTON, Engineer, JAMES RAPER, and JOHN GOULDING, Machinists, and
WILLIAM HOWARTH, Dentist, all of Bradford, in the County of York, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eleventh day of December, in the year of our Lord
One thousand eight hundred and sixty-six, in the thirtieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto us, the said
Robert Clayton, James Raper, John Goulding, and William Howarth, Her
special license that we, the said Robert Clayton, James Raper, John Goulding,
and William Howarth, our executors, administrators, and assigns, or such
others as we, the said Robert Clayton, James Raper, John Goulding, and
William Howarth, 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 "IMPROVEMENTS IN
LOOMS FOR WEAVING," upon the condition (amongst others) that we, the said
Robert Clayton, James Raper, John Goulding, and William Howarth, our
executors or administrators, by an instrument in writing under our, or their,
or one of our or their hands and seals, should particularly describe and ascer-
taip the nature of the said Invention, and in what manner the same was to be

page_text: 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.
1.
NOW KNOW YE, that we, the said Robert Clayton, James Raper, John
Goulding, and William Howarth, do hereby declare the nature of our said
Invention, and in what manner the same is to be performed, to be par-
ticularly described and ascertained in and by the following statement (that
is to say)-
Our Invention consists in stopping the tappet shaft of swivel looms while
the swivel shuttles are producing the pattern, and in again starting the tappet
shaft while weaving the plain or figured ground between the patterns, or
when weaving the ground during the process of producing the pattern. Our
improvements are applicable to looms for weaving various fabrics either with
or without swivel shuttles.
And in order that our Invention may be fully understood and readily.
carried into operation we will proceed to describe the accompanying Sheet of
Drawings, which represent two modes of performing our Invention; but we
wish it to be understood that we do not intend to limit ourselves to the details
given, as they may be considerably varied and modified.
Figure 1 is a front view, and Figure 2 an end view of part of an ordinary
swivel loom to which our improvements are applied.
が
a, a are the loom sides and b'is the crank shaft to which is fixed the usual
spur wheel gearing into the wheel c¹ loose on the tappet shaft c, but con-
nected to it when required by the sliding catch box c3 which fits on a key
fixed in the shaft; the catch box when in gear acts against studs projecting
from the face of the wheel c'. To the crank shaft 6 is also fixed the cam b
which gives an up-and-down motion to the lever'd mounted on the stud d';
this lever when required throws the catch box c out of gear to stop the tappet
shaft in the following manner :-The upper end of the cord e is connected' to
the jacquard engine, and the lower end is fastened to the vertical rod f; this
rod is connected to the inclined piece g sliding up and down in a slot in the
bar h. Above the inclined piece 9 is the hook i, which is hinged to the bar h.
The lower end of the bar his provided with an inclined slot h¹ through which
passes a stud projecting from the link j, the other end of which is jointed to
the lever k, which is forked above and takes into a circular groove in the
sliding catch box c. The parts are shewn in the positions they occupy when
the tappet shaft is at work, and when the loom is supposed to be weaving
the ground of the fabric, but as soon as the swivel shuttles are required to be
brought into operation tho jacquard lifts the cord e and the rod f, the inclined

page_text: piece then acting on the hook i causes this hook to catch on the end of the
lever d, consequently when this lever is raised by the cam 6 the hook i and
the bar hare raised, and the inclined slot h¹ acting on the link j causes this
link to move the lever k from the frame side, thereby throwing the catch
box out of gear with the wheel c¹ on the tappet shaft c, which then ceases
to revolve until the swivel shuttles have finished the pattern. At the next pick
after the cord e has been raised by the jacquard another cord from the jacquard
comes into operation; this cord is connected to a lever which is actuated by
an eccentric on the crank shaft, and when one end of the lever is raised by the
cord the swivel shuttles which had been held up by a weighted lever are
allowed to descend into their proper positions for weaving the pattern.
Figure 3 represents a side elevation, and Figure 4 an end view of part of a
loom to which a modification of our Invention is applied.
b
a is the frame side; b, the crank shaft, and c the tappet shaft; in this
arrangement the cam * is dispensed with, and the cord e from the jacquard is
connected to the lever m jointed to the stud m¹ by a universal link. The
wheel b¹ on the crank shaft 6 gears into the wheel c¹ loose on the tappet shaft,
but connected to it when required by the levers n, which act as a catch box
in the following manner :-To the end of the tappet shaft c is fixed the box o,
in which are fulcrum studs for the levers n; through the front plate of the
box o passes the pin o¹, the inner end of which is jointed to the levers n, and.
the outer end to the lever p. On the face of the wheel c¹ are cast projections.c²
against which the ends of the levers n act when the tappet shaft is at work,
and other projections for acting on the lever m when the tappet shaft is to
be stopped or started.
The mode of operation is as follows, and the parts are shewn in the positions
they occupy when the tappet shaft is at work:-As soon as it is necessary to.
stop the tappet shaft the jacquard raises the cord e and the lever m sufficiently
to allow the projection c³ to act against the lever m and push it slightly from
the loom side; this motion of the lever m acts on the lower arm of the lever p
and causes its upper arm to press the pin o¹ inwards, thereby disconnecting
the ends of the levers n from the projections and allowing the wheel c¹ to
turn loose on the tappet shaft. The spring c fixed to the back of the wheel c¹
acts on the levers n to prevent the back lash of the wheel c'. The swivel
shuttles are lowered or brought into the shed for weaving the pattern in the
following manner :-On the tappet shaft is fixed a wheel gearing into a pinion
which gives motion by a crank to an auxiliary lay sword which is connected
by a link with a curved slot to the swivel shuttle rack; when the tappet shaft
is stopped the lay in going back lowers the swivel rack by means of the curved

page_text: slot into the proper position for weaving the pattern. To the pinion above
referred to for working the auxiliary lay sword is connected an eccentric for
actuating the taking-up motion when the tappet shaft is stopped.
Having thus stated the nature of our Invention, and described two con-
venient modes of carrying the same into operation, we wish it to be understood
that we do not limit ourselves to the details given, but what we do claim is,
stopping and starting the tappet shaft of swivel or other looms by self-acting
mechanism governed by the jacquard or other shedding motion, in the manner
and for the purposes described.
In witness whereof, I, the said John Goulding, have hereto set my
hand and seal, this Eighth day of June, One thousand eight hundred
and sixty-seven.
JOHN GOULDING. (L.S.)