IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1879

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 the Invention of " IMPROVEMENTS IN LOOMS FOR
WEAVING."
Sealed the 12th August 1879, and dated the 14th February 1879.
PROVISIONAL SPECIFICATION left by the said James Hollingworth at the
Office of the Commissioners of Patents on the 14th February 1879.
JAMES HOLLINGWORTH, Managing Director of the Firm of Hutchinson, Holling-
worth, and Co., Limited, of Dobcross, in the County of York, Machine Makers.
"IMPROVEMENTS IN LOOMS FOR WEAVING."
This Invention relates to looms for weaving fancy goods, in which change shuttle
boxes are employed; and my improvements consist in a combination of parts for
facilitating the changes in the order of the shuttle boxes when weaving an irregular
pattern, whereby I am enabled to produce the same results with a greatly reduced
number of pattern surfaces or peg lags.
According to my Invention the shuttle boxes are selected by the action of the
pattern surface upon a series of bell-crank levers, and I employ two chains of
pattern surfaces or peg lags instead of one, as hitherto used.
The chains are mounted upon barrels placed upon a sliding rod or shaft, and by
means of a hand lever I am enabled to bring either of the barrels underneath the
bell crank levers before mentioned.
of
When it is necessary to alter the order of picking, the weaver raises the ends of
the bell crank levers from the pegs or projections of the pattern surface by means
cam, eccentric, or other suitable means, and then removes the barrel from
underneath the levers, at the same time substituting the second one in its place,
after which the levers are lowered on to the pegs or projections ready for operating.
Secondly. My Invention consists in forming the "check-neb" on the picking
tappit or boss of spring steel instead of rigid or cast metal, as heretofore, so that
when the shuttle is sent home the spring yields at the first contact with the
picking shaft and breaks the shocks, thus preventing any tendency of the same to
rebound.
Instead of forming the "check-neb" of spring steel I may use a rigid shell or
outer casting with a yielding spring underneath.

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 14th
August 1879.
JAMES HOLLINGWORTH, Managing Director of the Firm of Hutchinson, Holling-
worth, and Co., Limited, Dobcross,_in_the_County_of York, Machine Makers.
"IMPROVEMENTS IN LOOMS FOR WEAVING."
This Invention relates to looms for weaving fancy goods, in-which-change-shuttle-
boxes are employed; and my improvements consist. in a combination of parts for
facilitating the changes in the order of the shuttle boxes when weaving an irregular
pattern, whereby I am enabled to produce the same results with a greatly reduced
number of pattern surfaces or peg-lags. According to my Invention the shuttle
boxes are selected by the action of the pattern surfaces upon bell-crank levers, and
I employ two chains of pattern surfaces or peg-lags instead of one, as hitherto
used.
The chains are mounted upon barrels placed upon a sliding rod or shaft, and by
means of a hand lever I am enabled to bring either of the barrels underneath the
bell-crank levers before mentioned. When it is necessary to alter the order of
picking the weaver raises the ends of the bell-crank levers from the pegs or
projections of the pattern surface by suitable means, and then removes the barrel
from underneath the levers, at the same time substituting the second one in its
place, after which the levers at lowered on to the pegs or projections ready for
operating.
Secondly. My Invention consists in forming the " check-neb" on the picking
tappit or boss of spring steel instead of rigid or cast metal, as heretofore, so that
when the shuttle is sent home the springs yields at the first contact with the
picking shaft and breaks the shock, thus preventing any tendancy of the same to
rebound.
Instead of forming the "check neb" of spring steel I may use a rigid shell or
outer casting with a yielding spring underneath.
53
for
In order that my Invention may be more fully understood I herein give reference
to the accompanying Sheet of Drawings illustrative thereof. Fig. 1 is part back
elevation of one half of loom, and Fig. 2 is end elevation of same. A is the crank
shaft, upon which are a series of cams or tappits B of different sizes or "lifts
depressing the shuttle box lever in the usual manner. These cams slide upon the
crank shaft, being moved by the forked lever C, mounted upon a stud D, and
connected by means of a rod d with a bell crank lever E, one arm F of which rests
upon a chain of links or pattern surfaces working upon a barrel G upon the
shaft H.
•
Hitherto only one chain of pattern surfaces or links has been used, but I employ
_two-chains-J-and-JL;-each-of-these-are-composed of links..arranged. to produce..a_
certain pattern or to actuate the shuttle boxes in a definite order, and they can be
brought into operation at the will of the attendant; or each set can be placed, under
the bell crank levers E and E' by sliding the shaft H in its bearings, the end K
being formed square, so as to slide in the boss of the driving or noggin wheel h.
To enable the weaver to move the shaft readily the exact distance there is a
lever L mounted upon a stud M in front of the loom, the upper end of this lever
being connected to the sliding shaft H by rod N. The segment plate P is provided
with stops or notches at its two extremities which indicate the extent of motion
which is necessary to remove one set of links and substitute the other set..
Before moving the pattern surfaces it is necessary to raise the ends of the
levers E and E' clear of the projections upon the links. The lever E is shewn in
this position in the Drawing. It will be seen that the pin a which connects the
rod d with the lever E is inserted through a slot in the arm of the said lever, and

page_text: that when the said pin rests in the upper extremity of the slot the lever is clear of
the links, but if it rests in the lower extremity of the slot the lever will be drawn
down on to the links, in which position the lever E¹ and the parts belonging thereto
are shewn in the Drawing. The position of the pins in the slots is controlled by
the two series of levers R, which can be operated by the attendant through the
handles R'. Each series has two fixed studs c upon which it works, and it will be
seen that if the handle R' of the right hand series be moved towards R² the end of
the lever R³ will be moved downwards, and this lever being connected with the
rod d and pin a the latter will be forced into the lowest part of the slot, whereby
the end of the lever arm F will be lowered on to the pattern surfaces and occupy a
position corresponding to that of the levers E', F'.
The second part of my Invention is illustrated by Figs. 3 and 4, each of which
represents a picking tappit.
In Fig. 3 is shewn a "check-neb" formed of a flat spring A bent to a smaller
radius than the body of the tappit, so as to touch the same at each end a but to
leave it a short distance at b. As the shuttle is sent "home" the picking shaft or
the tappit thereon strikes this spring about the centre, which gives way and so
prevents any tendancy to rebound on the part of the picking shaft.
The spring is secured at one end to the plate B, which, being bolted to the body
of the tappit, secures the spring thereto, leaving the other end at liberty to allow
for the extension of the spring.
In Fig. 4 the "neb" A is formed of rigid or cast metal, the elasticity being
derived from the spiral spring C.
Having thus described the nature of my Invention, and shewn by Drawings how
the same is to be or may performed or carried into practice, I would liave it
understood that I do not limit myself to the precise details of construction or
arrangement herein set forth, as the same may be varied; but what I claim as mny
Invention and consider to be new is,-
Firstly. The employment of two series of pattern surfaces mounted upon and
turned by the saine shaft, substantially as and for the purpose herein shewn and
described.
Secondly. The combination and arrangement of parts L, N, P, for effecting the
lateral or endwise movement of the pattern surfaces, as herein shewn and
described.
Thirdly. The employment of an elastic picking "neb" constructed and applied
as shewn in Figs. 3 and 4, or any merė modification thereof.
In witness whereof, I, the said James Hollingworth, have hereunto set my
hand and seal, this Eighth day of August, in the year of our Lord One
thousand eight hundred and seventy-nine.
JAS. HOLLINGWORTH.
(L.S.)