Improvements in and relating to Knitting Machines.
Year: 1891

page_text: Date of Application, 19th May, 1891-Accepted, 27th June, 1891
COMPLETE SPECIFICATION.
Improvements in and relating to Knitting Machines.
A communication from abroad by EDOUARD DUBIED, of Couvet, Switzerland,
Knitting Machine Manufacturer.
1. GODFREY STIBBE, of 25 Jamaica Street, Glasgow, Lanarkshire, Merchant,
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 writing, that is to say :-
This invention has for its object and comprises a new or improved system and
mode and means to enable circular knitted goods to be made on knitting machines
on the "Lamb" system without the carriage striking stops at the ends of its
traverse. To obtain this result I employ three modified constructions or arrange-
ments and combinations of mechanism represented in Figures I, II, and III of the
accompanying drawings. While Figures IV and V represent details of the
vements of the cams of the constructions shown in Figures and 11.
Sigures I and II, the raising or centre cam is formed in 3 pieces, to be herein-
referred to as cams a, b, r, a², b', The cams b, ', are fixed upon the
plates d, d, (shown in Figures I, II, and IV,) but the cams a, a, e, e¹, can be
pressed back into slots which correspond in shape with the said cams.
cams a, a, e, have a pin or organ which traverses the plate e of the carriage
(Figure 1V). This organ has an eccentric which causes the cam to enter into
the cam-plate, if placed in the position indicated by Figure IV. Upon the
organ of the moving cam is placed a spring (Figure IV,) which causes the cam
to descend against the needles when the eccentric is lowered.
The cams t, e,
These
a', c, are rectangular on one side, and cut into an inclined plane on the other side,
so that when the needles meet the cam at the side of the inclined plane the cam
passes over the needles without moving them up, as shown in Figure V. The
inclined side of the cam can be made parallel with the exterior side of the cam
(Figure 1) or parallel with the needles (Figure 11). The inclined part is always
placed on the interior or inward side of the can, and the rectangular part on the
exterior or outward part of the cam. When the machine has to operate circular
work, the cams c, c', (Figures I, II and IV) are raised by means of the eccentric/,
which is put into the position f¹. Those cams, c', do not then touch the needles,
but the cams a, a, remain in contact with the needles. If the carriage is moved in
the direction of the arrow, that is, from right to left, the needles of the back needle-
bed dare not raised by the cam c¹, but pass beneath the fixed cam, without
touching it, and raise the cam a', by means of its inclined plane and press it into
the cam-box against the pressure of the spring 7, Figure IV, therefore the back
needles do not work. The needles of the front needle-bed d come in contact with
e can a. This cam raises them above cam b, and those needles then work.
Then the carriage is moved in the direction opposite to the arrow, that is, from
ft to right, the contrary effect is produced. The front needles pass without
orking, by pressing the cam a into the cam plate d and the back needles are raised
the cam a', and work. The course followed by the needles is indicated by the
otted lines xx, y y and e¹ a¹, y', y'. When cams a, a', have passed the last needles
ap, they drop again into their former position by means of the spring,
(Figure IV) therefore it is unnecessary to work further than the last needle up in
order to produce circular web goods. In Figure III, I indicate another means of
producing the same result, without having any motion in the cams a, b, and a', h¹.
The raising or centre cam is also formed in three parts, but the parts or cams a, b,
a', ', are fixed to cam plates d, d', aud therefore immovable, and the cams c
raised into the cam plates d d by means of the eccentric f (Figure IV) when it is
care

page_text: wanted to work circular plain web. If the carriage is moved in the direction of
the arrow (Figure III) the back needles are not raised by the cam e', which is
pressed into the cam-box. They pass below cam b', and are raised slightly by
cam a', but not sufficiently high to take up the thread. The front needles on the
contrary are raised along the inclined plane of cam a, as high as the corner of
the cam b, which follows up and presses them up to the necessary height for taking
the thread. When the machine works in the direction of the arrow, the front
needles of the machine work alone. When moved in the opposite direction, the
needles of the back needle-bed only are worked.
By means of this arrangement there are no movements of the cams whatever, in
order to produce circular knitted web, as the cams used in that operation remain
absolutely fixed.
Having now particularly described and ascertained the nature of my said
invention, and in what manner. the same is to be performed, I declare that what
I claim is
First. The system or mode of, and arrangement and combination of cams and
mechanism applied to knitting machines of the "Lamb" principle workin
knitted goods, for the purpose of dispensing with "stops" at the en
traverse of the carriage, substantially as herein described, in reference t
way of application shown in the accompanying drawings.
Second. The construction, or arrangement and combination of c
mechanism for the purpose described in Claim 1, substantially as herein
in reference to and shown in Figure 1 of the accompanying drawings.
Third. The construction or arrangement and combination of cams and n
for the purpose described in Claim 1, substantially as herein set forth in reference
to and shown in Figure 2 of the accompanying drawings.
Fourth. The construction, or arrangement and combination of cams and
mechanism for the purpose described in Claim 1, substantially as herein set forth
in reference to and shown in Figure 3 of the accompanying drawings.
Fifth. The construction, and use of fixed or stationary cams for working circular
web goods on knitting machines of the Lamb" principle for the purpose described
in Claim 1, substantially as herein set forth in reference to and by way of applica-
tion shown in the accompanying drawings.