IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1881

page_text: LETTERS PATENT to Richard Longden Hattersley, of Keighley, in the County
of York, and David Bailey, of Huddersfield, in the same County, for an
Invention of "IMPROVEMENTS IN LOOMS FOR WEAVING."
PROVISIONAL SPECIFICATION left by the said Richard Longden Hattersley
and David Bailey at the Office of the Commissioners of Patents on the
2nd June 1881.
RICHARD LONGDEN HATTERSLEY, of Keighley, in the County of York, and
DAVID BAILEY, of Huddersfield, in the same County. "IMPROVEMENTS IN LOOMS
FOR WEAVING."
This Invention relates to an improved arrangement of apparatus for operating
the weft fork and knocking-off lever in looms having change shuttle boxos. Upon
each side of the slay board and for operating upon each single shot of weft the
weft fork is placed about the centre of the slayboard, and is fixed to an oscillating
rod mounted in bearings in front of the slayboard, and extending from the centre
of the slayboard to that part opposite the lever for knocking off. On this rod is.
a small arm or crank, to which is attached a pin or stud which hangs down under-
neath the arm and passes through slide bearings attached to the slayboard, rising
and falling along with the weft fork. Through the same bearings passes an upright
pin, tho.lower end of which rests upon a lever hinged underneath the slay-board,
the upper end being directly under the arm or crank on the weft fork rod, but
not attached to it. A stud fixed to the end of the lever last mentioned rides
during the forward motion of the slay on a circular bearing attached to the loom
end and over a hinged inclined plate during the backward motion, which movement.
elevates the weft fork and keeps it in this position until the end of the plate is
reached, when it drops down on to the circular bearing. Under the slay board is
hinged a lever capable of working horizontally. As the slayboard recedes this
lever comes in contact with a self adjusting stop picco attached to the loom end;
which causes the end of the lever to project forward under the weft fork mechanism.
So long as the weft is present the lever end recedes as the slay moves forward,
but if there is no weft then the fork descends lower than usual, and the pin attached
to the arm of the weft fork rod passes through a hole in the horizontal lever,
retaining it in its forward or projecting position, and causes it to strike the
knocking off lever and thereby stop the loom.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent_filed
by the said Richard Longden Hattersley and David Bailey in the Great
Seal Patent Office on the 28th November 1881.
RICHARD LONGDEN HATTERSLEY, of Keighley, in the County of York, and
DAVID BAILEY, of Huddersfield, in the same County. "IMPROVEMENTS IN LOOMS
FOR WEAVING."
This Invention relates to an improved arrangement of apparatus for operating the
weft fork and knocking off lever in looms having change shuttle boxes. Upon each
side of the slay board and for operating upon each single shoot of weft the
weft fork is placed about the centre of the slay board, and is fixed to an oscillatory 1
rod mounted in bearings in front of the slay board, and extending from the centre
of the slay board to that part of it opposite the lever for knocking off. On this
rod is a small arm or crank, to which is attached a pin or stud which hangs down
underneath the arm and passes through slide bearings attached to the slay board,
rising and falling along with the weft fork. Through the same bearings an upright 1
pin, the lower end of which rests upon a lever hinged underneath the slay board,
the upper end being directly under the arm or crank on the weft fork rod, but not
attached to it. A stud fixed to the end of the lever last mentioned rides during
the forward motion of the slay board on a convex plate attached to the loom end
and on the backward motion of the slay board over an inclined plate, which latter 2
elevates the weft fork and keeps it in this position until the end of the plate is
reached, when it drops down on to the convex plate and brings down the weft
fork, or allows it to fall at the same time.
Under the slay board is hinged a lever capable of working horizontally. As the
slay board recedes this lever comes in contact with a self-adjusting stop piece 2
attached to the loom end, which causes the end of the lever to project forwards
under the weft fork mechanism. So long as the weft is present the lever end
recedes as the slay moves forwards; but if there is no weft in the shed then the
fork descends lower than usual, and the pin attached to the arm of the weft fork
rod passes through a hole in the horizontal lever, retaining it in its forward or 3
projecting position, and causes it to strike the knocking off lever and thereby stop
the loom.
In order that our Invention may be more fully understood, we herein give
reference to the accompanying Sheets of Drawings illustrative thereof. Fig. 1 is a
front elevation; Fig. 2, a plan view; and Fig. 3 a vertical cross section of such 3
parts of a loom as are concerned in our Invention. A is the slay board; B, the
breast beam, and C the ordinary knocking off lever. The weft fork D is attached
to a rod E suspended between the screwed pivots F so as to work with the
greatest delicacy. To the rod E is also attached a small lever arm e from which
depends a stud or pin G passing through the slide bearings H. Through the 4
same bearings a second pin J passes, the lower of which rests upon a lever K
working upon a fulcrum a fixed to the slay board. Through the end of the lever K
is secured a pin or stud b which during the forward motion of the slay rests upon
the convex plate L, but during the backward motion it passes over the incline M
hinged directly above the plate L. A lever N is hinged underneath the slay at c. 4
On one end of this lever is a beak or projection d, and the other end of the lever
is pressed upon by a flat spring O so as to keep the end d underneath the slay
board when the slay advances. P is a stop piece rendered slightly yielding by
means of a spiral spring Q, though practically rigid under ordinary pressure.
The action of the apparatus is as follows:-
During the forward motion or beat up of the slay the weft fork falls and rests
upon the shoot of weft, and as the slay recedes the lever K rides over the incline M,
5

page_text: and by means of the pin J raises the lever arm e and weft fork D to allow the
shuttle to pass at the next pick. As soon as the end of the incline is reached the
lever K drops, allowing the weft fork to fall and rest on the shoot of weft when
the slay board is at the back centre. Previous to this time the lever N has come
in contact with the stop piece P, and as the slay continues to recede the end d of
the lever is forced forwards, thus bringing and retaining the lever N for sufficient
time under the pin or stud G. When the weft is present the pin G does not fall
low enough to interfere with the lever N, which consequently retires under the
slay board at the next advance thereof; but if the weft is absent the fork falls
into the groove f, and the pin G enters a hole in the lever N, thus retaining the
lever in its forward position, so that at the next beat up the the beak & comes in
contact with the lever C and knocks off the loom.
Having thus described the nature of our Invention, and the manner in which
the same is to be performed or carried into practice, we would have it understood
that we do not claim the whole of the parts herein shewn," as many of them
are well known, but what we do claim as our Invention and consider to be
new is,―
a
Firstly. The employment of the horizontal lever N operated on by the stop
piece P and pin G, as and for the purpose herein shewn and described.
Secondly. The combined use of the hinged incline or cam M, lever K, and loose
pin J for raising the weft fork and allowing it to fall in the manner and for the
purpose, as herein shewn and described.
In witness whereof, I, the said Richard Longden Hattersley, for and on
behalf of myself and the said David Bailey, do hereby set my hand and
seal, this Twenty ninth day of September, in the year of our Lord One
thousand eight hundred and eighty one.
RICHARD LONGDEN HATTERSLEY. (L.S.)