IMPROVE- MENTS IN LOOMS FOR WEAVING
Year: 1880

page_text: LETTERS PATENT to George Pickup Hartley, the younger, of Blackburn, in
the County of Lancaster, Cotton Manufacturer, for an Invention of "IMPROVE-
MENTS IN LOOMS FOR WEAVING."
PROVISIONAL SPECIFICATION left by the said George Pickup Hartley, the
younger, at the Office of the Commissioners of Patents on the 7th October
1880.
GEORGE PICKUP HARTLEY, the younger, of Blackburn, in the County of Lancaster,
Cotton Manufacturer. "IMPROVEMENTS IN LOOMS FOR WEAVING."
My Invention relates more particularly to the weaving of that class of cloth
known as lenos, and is designed to allow more time and greater freedom of action
to those warp threads that require to cross over and pass the loop of the dupe
heald, which may be effected by placing in suitable bearings a shaft provided with
levers or arms; the extremities of these are connected by cords to the heald through
the eyes of which the warp thread pass that are required to cross over and pass the
loop of the dupe; the said levers or arms may be actuated from the crank arın or
other moving part of the loom, whereby the said warp threads will be raised bigher
than usual at the time of crossing or while the crank is at its top centre so as to
clear the said warp threads from the loop of the dupe; this extra raising of the
said warp threads to clear the loop of the dupe heald at the time of crossing forms
an essential feature of my Invention.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said George Pickup Hartley, the younger, in the Great Seal Patent
Office on the 7th April 1881.
GEORGE PICKUP HARTLEY, the younger, of Blackburn, in the County of Lancaster,
Cotton Manufacturer. IMPROVEMENTS IN LOOMS FOR WEAVING."
My Invention relates to the weaving of that class of cloth known as lenos, and
is designed to allow more time and greater freedom of action to those warp threads
that are required to cross and pass over the loops of the dupes, which may be
effected by placing in suitable bearings a shaft provided with lovers or arms, to the
extremities of which are connected by cords the healds, through the eyes of which
those warp threads pass that are required to cross over the loops of the dupes. The
said levers or arms may be actuated from the crank arm or other moving part of
the loom, whereby the said warp threads will be raised clear of the loops of the
dupes at the time of crossing while the crank is at its top centre. And in order
that my Invention may be fully understood and readily carried into operation, I
will proceed to describe the annexed Sheet of Drawings, reference being had to the
Figures and letters marked thereon. Fig. 1 is a cross section of a loom; and
Figs. 2 and 3, are detached views, in which are represented my improvements for
effecting greater freedom of action for the passage of those warp threads required
to cross and pass over the loops of the dupes. A is the frame side of a loom, to the
top tree of which is fixed hanger brackets B, for the purpose of supporting the
dobby or like apparatus, to the jacks of which are respectively connected by cords
the skeleton staves 1 and 3, the dupes 2 and 4, and the healds 5, 6, 7, and 8, which
are depressed when required, together with the staves containing the loops of the
dupes, by means of springs seen attached thereto in Fig. 1. The parts above
enumerated may be constructed in the ordinary manner. In bearings secured to
the hanger brackets B, hereinbefore alluded to, is supported the longitudinal shaft C
to which are fixed the levers or arms C¹; one of these is connected by the link D to
the crank arm E by which both are actuated. Each lever or arm C₁ is attached by
cords to the healds 7 and 8, so that with the closing of the shed, or at the time of
crossing, the crank having arrived at its top centre, the crank arm through the
medium of the link D will have imparted an additional lift to the healds 7 and 8,
by which means the warp threads passing through the eyes thereof will be raised
clear and allowed to pass freely over the loops of the dupes.
A modification of my
Invention is represented in Figures 1 and 3, in which the dupes 2 and 4 shoot or
rise alternately, by which means greater freedom of action is effected for the warp
threads in passing. In Fig. 1 the dupe 4 and heald 5 are elevated, whereby the
warp threads are raised to form the upper portion of the shed, the warp thread
passing through the eye of heald 5, having shot or carried with it the loop of dupe 2
while the healds 7 and 8 are lowered to form the lower portion of the shed. In the
next shed, as seen in Fig. 2, the dupe 4 and heald 5 are lowered to the position of
dupe 2 and heald 6, the warp threads of which now form the lower portions of the
shed, the skeleton staves 1 and 3 being likewise lowered, thereby allowing the
springs attached to the staves containing the loops of the dupes to exert the required
pressure, to bring the extremities of the loops on a level or plane with the lower
shed, the healds 7 and being at this time elevated to form the upper portion of
the shed. Fig. 3 represents a reverse position assumed alternately to Fig. 1 of the
dupes 2 and 4, and their respective healds 5 and 6. The description herein given
of the latter will therefore answer for the former. By the reverse or alternate
action of the dupes 2 and 4, only half the loops are shot or carried at one time, by
which means the warp threads required to pass over the loops of the dupes will be

page_text: enabled to effect their passage with greater freedom than by the ordinary method.
If desired the dupes 2 and 4 may be placed in the loom with the extremities of the
loops pointing downwards, the healds and dupes being now actuated by means of
tappets placed under the loom, springs being used above the healds to elevate them
when required, and an additional lowering movement being imparted to the healds
7 and 8 by a tappet so as to clear the warp threads from the loops of the dupes at
the time of crossing.
Having now described the nature of my said Invention and in what manner the
same is or may be performed, I wish it to be distinctly understood that I claim the
mode or manner herein described and set forth for effecting greater freedom of
action for those warp threads required to cross and pass over the loops of the
dupes.
In witness whereof, I, the said George Pickup Hartley, have hereunto
set my hand and seal, this Sixth day of April, in the year of our Lord
One thousand eight hundred and eighty-one.
GEORGE PICKUP HARTLEY, JUN*. (L.S.)