IMPROVEMENTS IN LOOMS FOR HAZING
Year: 1881

page_text: LETTERS PATENT to James Hollingworth, Managing Director of the Firm of
Hutchinson, Hollingworth, and Co., Limited, of Dobcross, in the County of
York, Machine Makers, for an Invention of "IMPROVEMENTS IN LOOMS FOR
HAZING"
PROVISIONAL SPECIFICATION left by the said James Hollingworth at the
Office of the Commissioners of Patents on the 7th February 1881.
JAMES HOLLINGWORTH, Managing Director of the Firm of Hutchinson,
Hollingworth, and Co., Limited, of Dobcross, in the County of York, Machine
Makers. "IMPROVEMENTS IN LOOMS FOR WEAVING."
This Invention relates to looms for weaving woollen and other goods, and the
first part refers to the jacquard or pattern apparatus for removing the weight of
the bell crank levers off the pattern surface or peg-lags, so that the "lagging back"
can be accomplished with less exertion than when the whole weight of the levers
are resting upon the pattern surface. The improvements consist in the employment
of a lever, at one end of which is a stud or pin working in an inclined slot formed
in the arm of another lever. This second lever is connected to one end of another
or third lever, and each are connected to and act on the bell crank levers previously
referred to, which rest upon the peg-lags or pattern surface. The first named lever
is in connection with the ordinary reversing handle, so that when the weaver
requires to "lag back" the reversing handle is moved in the direction required and
the arrangement of levers referred to are actuated thereby in such a manner that
the first mentioned lever lifts the bell crank levers off the peg-lags or pattern
surface, and as the weight is removed the operation of lagging back is rendered
easy.
Secondly. The Invention relates to the picking mechanism, and the object of the
Invention is to construct the loom so that the change of pattern surfaces can take
place without moving the pulley from the check tappet, and the improvements
consist in making the picking grid or grate a separate casting but connected to the
ordinary upright rod by means of lugs and a spiral spring.
Upon the crank shaft I place a cam, which operates against one end of a bell
crank lever, the other end of the said lever being in contact with a projection on
the grid, either on the upper or underside, so that when in the order of picking
Prins 1

page_text: the upright rod is raised and the end of the lever is on the upper side of the
projection the upright rod would be lifted without the grid, but immediately the
cam came into contact with the other end of the said lever it would be removed
from contact with the projection on the grid, and the grid would then be lifted by
means of a spiral spring on the bottom of the upright rod acting between lugs on
the said grid. When the end of the lever is on the underside of the lug both the
grid and rod are held up until released by the cam.
Thirdly. The Invention relates to a new arrangement of apparatus for lowering
the shuttle boxes gradually and without noise and consequent wear and tear. The
improvements consist in attaching an upright projection to the bottom box lever in
which is formed one or more notches or steps for purposes hereinafter explained.
A horizontal lever is also employed, to one end of which is connected a pendant
arm having a hinged toe piece or finger kept in position in one direction by a
spring. When the shuttle boxes are descending the bottom box lever rises, carrying
with it the notched projection, which catches into the toe or finger hanging from
one end of the horizontal lever, and as the other end of the said horizontal lever
bears upon a cam on the crank shaft the box lever can only rise in proportion to
the speed at which the said cam is revolving, by which means the boxes are
lowered steadily and without concussion. After the boxes have lowered and come
to rest the toe piece is released and drops back into its original position.
Fourthly. The Invention relates to another method of lowering the shuttle
boxes, and the improvements consist in the employment of a piston connected to
either the bottom or top box lever working within a tube or barrel containing
water or other liquid, so arranged that as the shuttle boxes are being lowered from
one box to another the piston acts upon a column of water or other liquid, and the
weight of the boxes press the water or other liquid out of the barrel into a
receiver, the boxes lowering at the ratio at which the water or other liquid is
being forced from the barrel, by which means the boxes are lowered without
concussion. Or instead of the piston acting upon water or other liquid it may be
actuated by compressed air.
Fifthly. The Invention relates to that class of loom in which, in addition to the
crank shaft, a low shaft tappet shaft is employed, usually revolving at half the
speed of the crank shaft, the two shafts being geared together by two spur wheels,
so arranged that the crank shaft revolves from right to left in such manner that
the pressure required to move the slay board towards the breast beam is underneath
or a lifting pressure. My improvements consist in causing the crank shaft to
revolve in the opposite direction, by which means the power or pressure required
to move the slay board towards the breast beam shall be from above or a downward
pressure, and this I accomplish by arranging the spur wheels which drive the crank
shaft and tappet shaft so that the two wheels are not in gear, except through the
intervention of an intermediate wheel, by which means the crank shaft and tappet
shaft revolve in the same direction, and the power required to move the slay board
towards the breast beam is not so great when it comes from above as when it
comes from below. By this arrangement the speed of the loom can be regulated
to suit the material being woven by changing the size of the intermediate
wheel.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Hollingworth in the Great Seal Patent Office on the 6th
August 1881.
JAMES HOLLINGWORTH, Managing Director of the Firm of Hutchinson,
Hollingworth, and Co., Limited, of Dobcross, in the County of York, Machine
Maker. "IMPROVEMENTS IN LOOMS FOR WEAVING."
This Invention relates to looms for weaving woollen and other goods, and the
first part refers to the jacquard or pattern apparatus, which consists in an
arrangement of apparatus for removing the weight of the bell crank levers off the
pattern surface or peg-lags, so that the lagging back can be accomplished with
less exertion than when the whole weight of the levers are resting upon the
pattern surface. The improvements consist in the employment of a lever, at one
end of which is a stud or pin working in an inclined slot formed in the arm of
another lever.
This slotted or second lever is connected to one end of another or third
lever, and each are connected to and act on the bell crank levers previously
referred to, which rest upon the peg-lags or pattern surface. The first named lever
is in connection with the ordinary reversing handle, so that when the weaver
requires to "lag-back," the reversing handle is moved in the direction required, and
the arrangement of levers referred to are actuated thereby in such a manner that
the bell crank levers are removed off the peg-lags or pattern surface, whereby the
weight is removed, and the operation of lagging back is rendered easy.
A is the
In order that these improvements may be better understood, I herein give
reference to the accompanying Sheets of Drawings, wherein Fig. 1 is back elevation
of a loom with my Invention applied thereto. In this representation the various
parts are shewn in the positions they assume when the loom is at work.
pattern surface or peg-lags passing around the barrel B, and C are the bell crank
levers with their upper ends resting upon and being lifted by the pattern surface in
the usual manner. D is a lever having a pin E at its lower end, working within a
slot formed in the arm of another lever F; one end of this slotted lever F is con-
nected to and works within a slot G formed in the hanging arin of the other bell
crank lever; C is connected to the slotted lever F by a third lever I, by which
means the parts are coupled together and actuated simultaneously. On the other
end of the shaft or stud J upon which the lever D is keyed, is also keyed the
reversing handle K, so that when the said handle K is moved in the direction of
the arrow, the whole of the levers are operated, and the bell crank levers and
picking lever L are removed off the peg-lags, as shewn in Fig. 2, consequently the
weight thereof is removed, and the operation of lagging back is rendered easy,
which is not the case when the weight of the levers are resting upon the pattern
surface during the time the weaver is lagging back.
Secondly. This Invention relates to looms, in which in addition to the crank
shaft, a low or tappit shaft is employed, revolving at half the speed of the crank
shaft, the said shafts being geared together by two spur wheels so driven that the
ascending motion of the crank is performed during that half of the revolution in
which it approaches the breast beam, whilst the descent occurs as the crank recedes
therefrom. Owing to the position in which the fulcrum or hinge of the slay sword
is usually fixed, the tendency of the slay is to gravitate or fall away from the
breast bcam. In consequence of the arrangement above described, more power is
expended during the "beat up or forward motion of the slay than in the
backward movement, as. both the crank and slay have to be lifted, and I have
ascertained by experiment that the loom runs more evenly and with less expenditure
of power if the crank shaft is caused to revolve in the opposite direction. To
JJ

page_text: effect this alteration without interfering with the direction of the tappet shaft, I
employ a third or intermediate wheel which, by gearing with the two wheels
hitherto used, causes them to revolve in the same direction.
"
There is another advantage in the use of the third wheel, inasmuch as being only
carrier," it requires but a short stud, which being adjustable, permits change
wheels to be used for altering the speed of the loom, instead of requiring new
pullies and alteration of driving belts as heretofore.
In order that this part of my Invention may be more fully understood, I herein
give reference to Sheet 2 of the accompanying Drawings, in which Fig. 3 represents
the driving end of a loom, and Fig. 4 a front view of the same parts. A is the
crank shaft, and B the low or tappet shaft which carry the wheels C and D
respectively. E is an adjustable bracket mounted upon a fulcrum stud E, and
provided with strengthening arms G, through which passes bolts H secured through
the radial slots I. The bracket E supports a short shaft or stud J which carries
both the spur wheel K and the driving pullies L. The wheel K gears with the
wheels C and D respectively, and the directions of rotation are indicated by arrows.
It will be seen that the wheel K may be changed whenever an alteration of speed
is required.
Having now described the nature of my said Invention, and described with the
aid of Drawings how the same may be carried into practice, I would have it
understood that I do not limit myself to the precise details or configuration of the
parts I have described and shewn, as the same may be varied or modified without
departing from the nature of my said Invention, but what I do claim and desire
to be secured is,―
Firstly. The combination and arrangement of slotted levers for removing the
weight of the levers C and L off the peg-lags or pattern surface, substantially as
herein shewn and described.
Secondly. The combination of the wheels C, D, and K geared together and
revolving in the directions herein shewn and described.
In witness whereof, I, the said James Hollingworth, have hereunto set my
hand and seal, this Fourth day of August, in the year of our Lord One
thousand eight hundred and eighty one.
JAS. HOLLINGWORTH,
(L.S.