Improvements in and relating to Knitting Machines and Fabrics Produced thereon.
Year: 1891

page_text: Date of Application, 18th Mar., 1891
Complete Specification Left, 18th Dec., 1891-Accepted, 23rd Jan., 1892
PROVISIONAL SPECIFICATION.
Improvements in and relating to Knitting Machines and Fabrics
Produced thereon.
We, WILLIAM HENRY REVIS and JOSHUA MARRIOTT, Machinists of Gold-
smith Street Works, Nottingham do hereby declare the nature of this invention to
be as follows:-
This invention relates to improvements in and in connection with circular or
other knitting machines or apparatus and is designed to make parts of the ribbed
fabric of hose & other articles of greater thickness and strength wherever desired,
as at the knee, ankle &c. and to improvements in the hose and other articles
produced by such machines.
In circular knitting machines provided with two or more feeders and welting
apparatus we attach an additional lever, operated by the welting wheel, to the
ordinary bracket carrying the welting wheel. The additional lever is at its upper
end attached to one of the machine knocking-over bolts, so that at a movement of
the lever the knocking-over bolt to which it is attached is withdrawn from
operation. This movement of the lever is effected by a cam on the welting wheel
revolved in the usual manner. At the same time as the one of the machine knocking-
over bolts is thus withdrawn from operation, the welting wheel attached to the next
feeder is caused by another cam on the welting wheel to shorten the throw of those
machine needles, which it affects, in the usual manner so as to enable these needles
to take a second loop within the latch of each of them. When the two loops thus
placed on each needle have been knocked over in the usual manner a fabric is
produced which is considerably thicker and stronger than the fabric of the other
parts of the hose or other article made in the usual way. The mechanism above
described is brought into operation & the resulting fabric produced at any part of
the article as desired by a stud or studs upon the pattern chain in the usual
manner.
March 17th 1891
W. H. REVIS.
JOSHUA MARRIOTT.
COMPLETE SPECIFICATION.
Improvements in and relating to Knitting Machines and Fabrics.
Produced thereon.
We, WILLIAM HENRY REVIS & JOSHUA MARRIOTT, Machinists, Goldsmith
Street, Nottingham 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 :-
In ordinary circular knitting machines for making ribbed fabrics provided with
two feeders both the cylinder and dial (otherwise called respectively the "frame"
& "machine") of the machine or head, are provided with two sets of cams or
inclines for clearing and knocking over the loops, one set for each feeder. In
making the fabric in the ordinary manner each of these cams is brought into
operation & the result is that two courses of fabric are made in one revolution of
the machine. In order to make a much stronger & thicker fabric than is thus
produced by the ordinary method of knitting on such a machine, we remove from
operation the knocking over cam in the dial attached to one of the feeders and also
the clearance cam in the dial attached to the other feeder. By this means the
[Price 4d.]

page_text: thread which has been taken into the hooks of the dial needles from the first of the
two feeders is carried round in them to the next feeder without being drawn
through & knitted into the fabric. The dial clearance cam attached to the second
feeder being withdrawn from operation, these loops are not cleared or slid over the
latches of their needles in the usual manner, but still remain in the hooks, which at
this point take in additional loops from the second thread guide. The two loops thus
placed in the hook of each dial needle are then drawn through the loops already on
the stem of each of them by the knocking over cam of this second feeder. On
arriving at the clearance cam of the first feeder the double loop, which is in the eye
of each dial needle, is cleared or slid behind the latch & on to the stem of the needle
thus completing one revolution of the head. The whole process previously
described is repeated as often as desired. Whilst this method of knitting with the
needles in the dial is proceeding the needles in the cylinder are forming & com-
pleting their loops in the usual manner & the ribbed fabric thus produced is
composed on the one side of double stitches, by the dial needles drawing double
loops through the double stitches previously completed by them; & on the other
side of stitches formed in the usual manner.
The method of knitting with the dial needles resulting from the arrangement of
the knocking over & clearance cams just described, can be performed equally well
with the cylinder needles by means of an exactly similar arrangement of the cylinder
knocking over & clearance cams, whilst the knitting by the dial needles is allowed
to proceed in the usual manner. In this case the resulting fabric is composed on
the one side of double stitches, by the cylinder needles drawing double loops
through the double stitches previously completed by them; & on the other side of
stitches formed in the usual manner.
It is obvious that on a machine provided with more than two feeders the same
fabric can be produced by repeating the arrangement of the knocking over &
clearance cams previously described in the case of each additional pair of feeders
& it is to be understood that such a repetition of the arrangement forms part of our
invention.
It is also obvious that in machines provided with the requisite number of feeders
we can by using the principle of our invention & suitably adjusting the knocking
over & clearance cams attached to the feeders, enable the needles to take into their
hooks more than two loops before drawing them through the stitches previously
formed.
The above described method of knitting either by the dial or cylinder needles can
be effected at any part of a circular rib knitted fabric, which it is desired to
strengthen, such as the knee or ankle of a stocking, by adjusting the knocking
over & clearance cams of the dial or cylinder by hand, or if it is desired to introduce
this method of knitting into a fabric at any required intervals automatically, we
effect this object by attaching the knocking over & clearance cams to levers
operated by studs on a pattern chain or other suitable device.
Having now particularly described & ascertained the nature of our said inven-
tion & in what manner the same is to be performed we declare that what we
claim is :
1. A circular rib knitting machine provided with moveable knocking over &
clearance cams arranged in the manner described for the purpose specified.
2. A knitted fabric or article composed wholly or in part of stitches formed
substantially in the manner described for the purpose specified.
Dated this 17th day of December 1891.
WILLIAM HENRY REVIS.
JOSHUA MARRIOTT.