Improvements in Knitting Machine Thread Carriers.
Year: 1892

page_text: Date of Application, 7th May, 1892
Complete Specification Left, 6th Feb., 1893-Accepted, 11th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in Knitting Machine Thread Carriers.
WALTER PRINGLE and ROBERT PRINGLE of Robert Pringle & Son Hawick
Hosiery Manufacturers do hereby declare the nature of this invention to be as
follows:-
Our invention relates to the construction of thread carriers for use in the
production of plated knitted work on straight bar knitting machines of the cotton
type.
At the present time plated work is generally made by using two thread carriers
and our invention consists according to one design of a thread carrier with two
eyes one of which is lower than the other. In a second carrier arranged for fine
gauge machines, the second and lower eye of the carrier is in the form of a tube,
fitted to slide in the ordinary carrier finger and automatically raised at the end of
each course to allow of the sinkers being brought forward. When this carrier
starts upon its return traverse the raised tube is released and moved down to its
working position by a spring.
These carriers are traversed across the machine, and the amount of their traverse
regulated by the arrangements usually adopted in the class of knitting machines
heretofore referred to.
With these carriers we are enabled to produce a better class of plated fabric
than is possible with the present arrangement of thread carriers.
Dated this 6th day of May 1892.
W. H. POTTER, M.I.M.E.,
Parliament Chambers, Nottingham, Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Knitting Machine Thread Carriers.
WALTER PRINGLE and ROBERT PRINGLE of Robert Pringle & Son Hawick
Hosiery Manufacturers, 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 :-
Our invention relates to an improved thread carrier or guide for use in the
production of plated knitted work on straight bar knitting machines of the Cottons"
type.
According to our invention the thread carrier is provided with two eyes, one of
which is made in the form of a tube and fitted to slide vertically. This tube
supplies the plating thread, and at the end of each traverse is raised clear of the
sinkers in order that the latter may be brought forward and divide the threads
upon the needles. At the commencement of each traverse of the thread carrier
the tube is lowered, in which position the carrier lays its thread upon the needles,
the tube being again raised when the traverse of the carrier is completed.
For raising and lowering the tube, the carrier is provided with a lever which is
connected by a link to the tube and so acted upon by a spring that the tube is held
by it, in its lowest position. At the end of each traverse the lever is acted upon
by a suitable arrangement of mechanism which raises the tube, and lowers it again
just before the carrier starts upon its return traverse.
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page_text: We have attached hereto one sheet of drawings illustrating our invention and
have referred to the same in- the following description.
Fig. 1 is a side elevation, Fig. 2 a front elevation and Fig. 3 a plan of our
improved thread carrier and
Fig. 4 a side elevation of part of a thread carrier showing an alternative method
of connecting the lever and tube.
The carrier is attached to, and traversed to and fro across the needles by a
carrier rod a Figs. 1. 2. and 3. which may be of any of the usual sections. Mounted
upon the rod a is an upright b to which the top plate c is secured, this latter
carrying the guide piece d which is provided with an eye e of the usual kind and
also a sliding tube f. Upon the upper side of the plate c there are bearings g for
a lever h, which is connected at one end to the tube f by a link k, while the other
end is acted upon a spring / which tends to keep the tube f in the position shown.
In the carrier shown in Fig. 4 the parts c, d, e, h, g, and I are constructed
substantially as described with reference to Figs. 1. 2. and 3, but the tube f is
made long enough to project above the plate c which may form a guide for it, and
the tube is then connected to the lever h direct, the link k in this design being
dispensed with.
When working with our improved carrier the usual knitting thread passes through
the eye e and the plating thread through the tube which would be in its highest
position until just before the carrier commenced its traverse. The tube would then
be lowered and the carrier traversed across the machine until the carrier rod was
stopped by the fashioning screw, the carrier being then at the edge of the fabric
being made. Directly after the motion of the carrier is stopped, the tube f is
raised to clear the sinkers as they are brought forward, and it is held in its raised
position until the carrier is just about to start on its return traverse.
It should also be understood that the spring may be used for holding the tube
in its raised position, instead of in its lowered position and that the lever for
raising and lowering the tube may be acted upon by stops which are moved in and
out by the fashioning screw, or that other mechanism may be used for acting upon
the lever at the desired time.
We are fully aware there are other knitting machine carriers with two fixed
guide eyes and with two guide eyes so fitted that one of the same may be moved
to the right and left of the other eye, and we lay no claim to carriers of this
description, nor to the general principle of a thread carrier with two eyes.
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―
A knitting machine thread carrier having one fixed guide eye, and one guide-
eye in the form of a tube, fitted so that the same can be raised and lowered,
substantially as and for the purpose, and in the manner shown and described in the
accompanying drawings and Specification.
Dated this 4th day of February 1893.
W. H. POTTER, M.I. Mech. E.,
Parliament Chambers, Nottingham, Agent for the Applicants.