Improvements in the Manufacture of Knitted Fabrics and in Apparatus therefor.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Knitted Fabrics and in
Apparatus therefor.
We, CHARLES BARROWDALE CARRYER, and WILLIAM MOORE, both Hosiery
Manufacturers, and JOHN GODDARD, Glove Factory Manager, all of 67 Granby
Street, Leicester, do hereby declare the nature of this invention to be as
follows:-
:-
This invention relates to improvements in the manufacture of knitted fabrics
and in apparatus therefor and has reference to means designed more particularly
for producing press off" fabric on rotary plain and rotary rib knitting machines
and Cotton's patent frames.
66
"Press off" fabric has heretofore only been produced on hand knitting
machines but by our invention we are enabled to produce on power frames numerous
fancy patterns which it has been impossible to produce up to the present
on power frames.
According to our said invention in the case of a rotary frame, the frame per-
forms the ordinary knitting operation, as usual, but the presser (which is a Tuck
presser) besides coming down once in the ordinary manner, is by means of extra
presser cams, brought down at the time the loop is being brought forward, thus press-
ing off a certain number of loops. The presser is then shogged automatically so that
when the frame goes through the ordinary knitting operation above referred to,
the presser acts as in the ordinary work, thus pressing twice in the formation of
each course, or in each revolution of the frame. The apparatus for thus auto-
matically actuating the presser may be applied to hand frames.
In the case of a Cotton's patent frame, instead of the presser falling twice as
above referred to, the needle bar is caused to rise to meet the presser, the presser
being a fixture and the needle bar being operated by our extra presser cams.
: Dated this 021 d. of T
1007
Improvements in the Manufacture of Knitted Fabrics and in
Apparatus therefor.
We, CHARLES BARROWDALE CARRYER, and WILLIAM MOORE, Hosiery Manu-
facturers, and JOHN GODDARD, Glove Factory Manager, all of 67 Granby Street,
Leicester, in the County of Leicester, do hereby declare the nature of this invention
[Price 811

page_text: 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 improvements in the manufacture of knitted fabrics
and in apparatus therefor, and has reference more particularly to means designed
for producing "press off fabric on plain rotary power knitting frames and on
Cotton's Patent frames.
"
"Press off" fabric has heretofore only been produced on hand-knitting
machines, but by our invention we are enabled to produce numerous fancy
patterns or power frames.
According to our said invention in the case of a rotary frame, the frame per-
forms the ordinary knitting operation as usual, but the presser (which is a tuck
presser) besides coming down once in each course can by means of an extra presser
cam, be caused to perform a second pressing operation in a course or revolution
when desired.
For this purpose mechanism is provided for shogging the presser automatically
at the proper times so as to cause it to be actuated by the extra presser cam as may
be required, it being when in its normal position operated only by the ordinary
presser cam.
The said mechanism may conveniently comprise a pattern wheel or disc carrying
adjustable cam-like studs or projections which are adapted to effect the shogging
of the presser frame through a suitable lever and connections.
The pattern wheel is actuated from a cam on the cam-shaft through the medium
of a lever carrying a pawl or clawker adapted to engage a ratchet wheel connected
with the said pattern wheel.
In order that our invention may be clearly understood and readily carried into
effect we will proceed to describe the same fully by aid of the accompanying draw-
ings which illustrate a convenient arrangement of mechanism for carrying out
our said invention and in which:-
Figures 1 and 2 are respectively a rear and a front elevation of the said
mechanism only so much of the knitting machine being shewn as is necessary for
the purpose of explanation.
Figure 3 is an end view of a portion of the said mechanism.
Figure 4 is a part section on the line Figure 2, looking towards the left,
illustrating certain details hereinafter referred to.
a is the cam shaft which carries the ordinary presser cam b and the extra presser
cam b', these two cams being in the present case secured by a pin 62 to a flanged
collar 63 on the said shaft, and being so arranged that the swell or lift of the
cam b is in advance of that of the cam 6' as seen more clearly in Figure 4.
c is the pattern wheel which is mounted on a suitable pivot c¹ secured to frame
of the machine, and c² ² are the adjustable cam like projections which are secured
by bolts for pins engaging in holes in the said pattern wheel.
d is the cam on the main shaft a for operating the pattern disc, while d¹ is the
leven, the nawl or clawker and d³ the ratchet wheel throuch the medium of
which the movement is transmitted from the cam d to the pattern wheel. The
lever d¹ is pivotted at d to the extremity of a rod secured to the frame of the
machine, and has a truck or bowl de on which' the cam d acts.
e is the lever by which the presser is shogged. This lever carries a lateral pro-
jection e¹ having a rounded surface against which the projections strike and so
turn the lever slightly on its pivot e³.
f is a bar or member of the frame to which this lever is connected, the connec-
tion having sufficient play to allow of the movements of the parts. This bar f
has mounted on it an arm f¹ which 'partakes of its endwise movements and has a
forked extremity f which engages a grooved collar f³ for the purpose of control-
ling the position of a roller fadapted to work on one or other of the cams 6 b¹.
This roller is carried by a pivot nin f5 projecting from a rod fo connected with the
presser, and the collar is formed on the said pin.
The arrangement is such that the aforesaid lever when moved on its pivot by

page_text: the projections c² causes the presser to be shogged to the right to the extent required
to move the roller f* through the medium of the bar f and forked arm f¹ from the
ordinary presser cam 6 to the extra presser cam b¹. The presser is thus caused
to press-off twice in the particular course which is being formed at the
time a projection strikes the projection el.
By varying the position and number of the projections c³ on the pattern wheel
the courses in which this double pressing has taken place can be caused to follow
each other in any desired order according to the pattern required.
After a projection has passed the projection e¹, the lever e and the presser are
moved to the left into the original position by a spring e3, and the roller f³
resumes its position on the ordinary presser cam.
The operation of a machine provided with the aforesaid mechanism is as
follows:-
The machine is started in the ordinary manner and as the cam shaft a revolves,
the cam d causes the clawker d² to rise and fall, so feeding the ratchet wheel d³
and the pattern wheel c round gradually. As the studs are carried round they
strike the projection e¹ on the lever e and cause the latter to shog the presser in
the manner described, thus shifting the roller f* from one presser cam to the
other. The parts are so arranged that this movement takes place when the cams
are approximately in the position shown in Figure 4, where their surfaces are on
a level and so will not interfere with the lateral movement of the roller.
In applying our invention to a Cotton's Patent frame, the needle bar is caused
to rise to meet the presser twice in a course at the required times instead of the
presser falling twice as in the case above referred to. In such a case the presser
is fixed or stationary, and the needle bar is actuated by a similar arrangement of
presser cams to that hereinbefore described, but instead of the bar f, forming a
part of the presser it is separate therefrom and the rod f6 is connected to and
operates the needle bar.
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:-
-
1. The manufacture of press-off fabric on a power knitting frame, sub-
stantially as described.
2. In a power frame for manufacturing press off fabric, the employment of an
extra-presser cam in combination with the ordinary presser cam, substantially as
described.
3. A power frame provided with mechanism for producing press off fabrics,
substantially as hereinbefore described with reference to the accompanying
drawings.
Dated this 19th day of October 1897.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicants.