Improvements in Circular Knitting Machines.
Year: 1894

page_text: Date of Application, 5th Mar., 1894
Complete Specification Left, 5th Dec., 1894-Accepted, 5th Jan., 1895.
PROVISIONAL SPESIFICATION.
Improvements in Circular Knitting Machines.
I WILLIAM INGRAM JAMES of Green End House Stafford in the County of
Stafford Engineer, do hereby declare the nature of this invention to be as
follows:-
--
An improved method of holding the knitted web as it is produced by the needles
of a circular knitting machine without the use of weights and applicable to machines
for producing either ribbed or plain work or both.
To some convenient revolving part of a circular knitting machine I attach one
or more presser feet so shaped and placed as that they shall press down on the
knitted web at the time that the needle is moved to "throw off its loop." The
action of these presser feet being to assist to roll the last previously formed loop
off the hook of the needle and subsequently to hold this loop whilst the needle is
pushed through the last formed loop (i.e. the one formed next to above mentioned
une) by the action of the knitting cams and thus counteract the tendency that the
knitted web has to be carried with the needles instead of the needles sliding through
the loops of the web.
1
1
1904
Improvements in Circular Knitting Machines.
I WILLIAM INGRAM JAMES, of Green End House, Stafford, in the County of
Stafford, Engineer, 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 :—
.
This invention relates to circular knitting machines and has for its object an
improved method of holding down the knitted web as it is produced by the needles
without the use of weights and is applicable to machines for producing either ribbed
or plain work, or both.
To some convenient revolving part of a circular knitting machine-as for instance
the cam cap-I attach one or more presser feet so shaped and placed that they
shall press down on the knitted web at the time when the needle is moved to throw
off its loop.
•
These presser feet assist the needles in throwing off their loops and subsequently
hold these thrown off loops clear of the needles while the needles are thrust out
through the last formed loops to again take hold of the yarn.
The presser feet are placed so that in revolving they act upon the knitted web
at the places, where the cylinder and dial needles are being thrust outwards by the
action of the knitting cams and so counteract the tendency which the knitted web
has to be carried with the needles and they hold the web so that the needles slide
through the loons.

page_text: My invention is illustrated by the accompanying drawings in which,
Fig. 1 is a plan of a portion of a circular knitting machine shewing my
improvements.
Fig. 2 is an elevation looked at from one side.
Fig. 3. is an elevation looked at from the opposite side.
Fig. 4. is a vertical section through one of the presser feet.
Fig. 5. is a vertical section through the other presser foot.
Fig. 6. is a plan and Fig..7..an elevation of a cam cap shewing a modified form
of presser foot.
Fig. 8 is a vertical section of part of a knitting machine shewing the same presser
foot.
A is the upper portion of a cylinder of a circular knitting machine. B is a dial
and C is a cam cap.
The cam cap Ċ is driven round by the machine in any usual manner so as to
actuate at the proper times the dial needles D. The cylinder needles E also are
operated by the usual cams.
To the cam cap C I attach a presser foot F and another presser foot G. The
one F is conveniently held to the cam cap C by a screw f and the other G is
clamped in an adjustable manner by a screw g in a piece g₁ held fast to the cam
cap C by screws g² g³ though either of these methods of construction may be
modified.
These two presser feet F and G are carried round by the cam cap C the one F
following the yarn carrier H which in the drawing is supposed to be revolving in
the direction shewn by the arrow and coming into action at the point where the
cylinder needles rise after drawing down their loops thereby preventing the web
rising with the needles.
The other presser foot G leads the yarn carrier H and comes into action at the
point where the dial needles are being thrust out, and thereby prevents the web
moving out with the needles.
The position of the presser foot F is shewn more clearly in Fig. 4. It is carried
round behind the cylinder needles E and with its lower edge f¹ nearly touching
both the edge of the dial B and of the cylinder A just leaving sufficient space for
the loops i. and the web to pass.
The position of the presser foot G is very similar (see Fig. 5) only that it is kept
small enough in cross section to allow the dial needles D to pass over it.
I may vary the construction of these presser feet as I may find convenient. For
instance they may take the form of an arm; (see Figs. 6. 7 and 8) with a wheel ji
or roller which runs just behind the cylinder needles E and in front of the hooks of
the dial needles D.
.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed I declare that what I
claim is..
The use in circular knitting machines of a piece or pieces which I call presser feet
which act immediately behind the cylinder needles for the purpose of pressing. the
loops off the knitting needles and for holding down the loops when they have been
pressed off as described.
Dated this 4th dox of December 1801