Improvements in Looms for Weaving Ornamental Fabrics.
Year: 1886

page_text: Date of Application, 8th Apr., 1886.
Complete Left, 7th Jan., 1887.
Complete Accepted, 8th Feb., 1887.
Improvements in Looms for Weaving Ornamental Fabrics.
We, JOHN CLARK, of Parkhead Factory, 59 East Hope Street, Glasgow, in the
County of Lanark, North Britain, Manufacturer, and JOSEPH WHITSON, of the same
place, Factory Manager, do hereby declare the nature of this Invention to be as
follows, that is to say:
This Invention has for its object to improve and simplify combinations of mechanism
for weaving certain kinds of ornamental fabrics by power in an economical manner.
The fabrics referred to are of the kind having spots or stripes or other ornamental
devices formed by small raised loops upon a ground which may be either of a plain or
more or less ornamental texture.
In carrying out the Invention the loops are formed by means of bent, wires fixed to
a horizontal bar which has inward and outward and lateral movements imparted to it
so as to enter behind some of the warp threads and move forward under them to the
fell of the cloth so as to form loops, the wires being withdrawn laterally from the
loops as soon as the loops are secured by one or more weft shots. The bar to which
the bent wires are adjustably fixed is made round or with round ends which move in
guide slots at the sides of the loom, and bosses with crank pins on them are placed on
the ends of the bar so as also to enter and move in the guide slots. The bosses are
fixed to the bar by pinching screws and the bar can be turned and adjusted in the
bosses so as to raise or lower the bent ends of the wire. The bar is moved inwards
and outwards by two levers acting on it near its ends and fixed to a rocking shaft
having on it a lever acted on by a cam on the low or second-motion shaft of the loom.
The lateral movements of the bar are caused by two wires or cords connected by
bellcranks or otherwise to levers placed so as to be acted on by cams on the low
shaft, but not directly, the cams acting on levers fitted with pins with which hooks
jointed to the other levers engage when required by the pattern. The hooks have
springs applied to tend to keep them off the pins of the levers and are made to engage
with those pins when required by cords or wires moved by the Jacquard or other
pattern mechanism employed. The lateral movement of the rod carrying the looping
wires is steadied by frictional action when entering the shed to form loops. The rod
passes through slots in the ends of the levers which move it inwards and outwards and
adjustable springs or brake blocks are arranged in the slots or upon the levers in such
positions that the rod bears against them when moved inwards.
EDMUND HUNT,
Applicant's Agent.

page_text: COMPLETE SPECIFICATION.
Improvements in Looms for Weaving Ornamental Fabrics.
We, JOHN CLARK, of Parkhead Factory, 53 East Hope Street, Glasgow, in the
County of Lanark, North Britain, Manufacturer, and JOSEPH WHITSON, of the same
place, Factory Manager, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement, that is to say-
This Invention has for its object to improve and simplify combinations of mechanism
for weaving certain kinds of ornamental fabrics by power in an economical manner.
The fabrics referred to are of the kind having spots or stripes or other ornamental
devices formed by small raised loops upon a ground which may be either of a plain or
more or less ornamental texture.
In carrying out the Invention the loops are formed by means of bent wires fixed to
a.horizontal bar which has inward and outward and lateral movements imparted to it
so as to enter behind some of the warp threads and move forwards under them to the
fell of the cloth so as to form loops, the wires being withdrawn laterally from the loops
as soon as the loops are secured by one or more weft shots.
The improved mechanism by which we effect the operations hereinbefore referred to
is shown on an accompanying sheet of explanatory drawings, figure, 1, of which is a
plan showing some of the looping wires and parts immediately connected therewith,
whilst figure, 2, is a vertical section of the loom as at right angles to the front but
with various well known parts not shown. In these drawings the same reference
numerals are used to mark the same or like parts wherever they are repeated.
The bent looping wires, 3, are fixed to a horizontal bar, 4, which has a number of
horizontal holes formed in it for the wires which when adjusted are fixed by pinching
screws. The looper bar, 4, is made round or with round ends which move in guide
slots, 5, in brackets, 6, near each side of the loom (the parts at one side only, being
shown) and bosses, 7, with long crank pins, 8, on them are fixed on the bar, 4, the
crank pins moving in the guide slots, 5. The bosses, 7, are fixed to the looping
bar, 4, by pinching screws, and the bar can be turned and adjusted in the bosses so
as to raise or lower the bent ends of the looping wires, 3. The looping bar, 4, is
moved inwards and outwards by two levers, 9, with forked ends, acting on it near its
ends and fixed to a rocking shaft, 10, having on it a lever, 11, 12, acted on by a
cam, 13, on the low or second-motion shaft, 14, of the loom. The lever acted on by
the cam, 13, is in two paris, 11, 12, jointed to each other and connected by a strong
spring, 15, which yields when the movement of the levers, 9, is obstructed in any
way.
The lateral movements of the looping bar, 4, are caused by two wires or ords
connected by belleranks or otherwise to levers placed so as to be acted on by
cams (16) on the low shaft, 14, but not directly, the cams (16) acting on levers (17)
with pins or catches with which hooks, (18) jointed to the other levers (19) engage
when required by the pattern. When these parts are used in duplicate they act in

page_text: opposite directions on the looping bar, 4, and the paris are by preference simplified as
shown in the drawings by applying a spring, 20, to move the looping bar in one
direction, whilst for moving it in the other direction there is one cam, 16, on the low
shaft, 14, which acts on a lever, 17, made with a slot and catch for a hook, 18. This
hook, 18, is jointed to a lever, 19, to which is adjustably attached a strap, 21, passing
round a guide pulley, 22, and fixed to the boss, 7, of the looper bar, 4. The hook, 18,
extends below the joint attaching it to the lever, 19, and has at its lower end a
pin, 23, which is acted on by a lever, 24, connected by a cord or wire, 25, to the
Jacquard or other pattern mechanism. A spring, 26, applied to the hook, 18, to
make it tend to keep engaged with the lever, 17, and when it is not to be acted on by
that lever the lever, 24, is by the pattern mechanism made to move it clear of the
catching part of the lever, 17.
A catch lever, 27, acted on by a spring, 28, is provided so as by a notch or shoulder
to hold the lever, 11, 12, in its highest position so as not to be acted on by the
cam, 13, when the looping action is not required; and this lever, 27, is moved aside
at the proper times by a cord or wire connecting it to the pattern inechanism.
Having now particularly described and ascertained the nature of our said Invention
and in what manner the same is to be performed we declare that what we claim is :-
The combination of parts constituting our improved mechanism for forming loops
in weaving ornamental fabrics, substantially as hereinbefore described.
EDMUND HUNT,
Applicant's Agent.