Improvements in or relating to Straight-bar Knitting Frames.
Year: 1889

page_text: Date of Application, 27th Feb., 1889
Complete Specification Left. 26th Nov. 1889-Accepted. 28th Dec.. 1889
PROVISIONAL SPECIFICATION.
Improvements in or relating to Straight-bar Knitting Frames.
I, JOHN ARTHUR BARFOOT of Canning Place, Leicester, Hosiery manufacturer,
do hereby declare the nature of this invention to be as follows:-
"
1
This invention relates to straight bar knitting frames and is particularly applicable
to machines constructed on the Cotton's principle and known in the trade as "shog
bar frames employed in the production of Cardigan jackets and similar goods and
the object of the invention is to effect certain alterations or improvements in the
construction of the said machines by means of which the pattern of the fabric may
be varied, at the will of the operator, as is hereafter described. In the manufacture
of Cardigan jackets it is frequently desirable to alter or vary the pattern of certain parts
of the garment, such as the pockets, cuffs, etc., during the course of manufacture, in
order to give the garment a more ornamental appearance and heretofore this has been
done upon this particular class of frames viz. the "shog bar" frames, by the shogging
or lateral movement of the machine needle bar at the time when the machine needles
were pressed or knocked over the stitches to form a course in the fabric i.e. at every
second or return traverse of the thread carrier.
Now according to this invention I provide that the machine needle bar may be
shogged or moved laterally at every half course, that is at the end of every traverse
of the thread carrier.
In order to effect this result I may construct the shogging wheel in such a manner
that it may cause the machine needle bar to shog twice during the time that it now
shogs once; or I may attain the same end by employing an additional cam to act
upon the trucks of the said machine and cause the rack which operates the shogging
wheel to rack twice where it now racks once.
I also provide, after a certain amount of fabric has been knitted in the manner
before described, that instead of the machine needle bar being caused to shog in one
direction while the machine needles are being pressed and casting their loops and
to return to its original position ready for the next lateral move while the frame
needles are being pressed the reverse operation may take place and the machine
needle bar shog while the frame needles are pressing and return it to its original
position while the machine needles are pressing.
In order to effect this alteration in the time of shogging I mount on the side of the
wheel which operates the trucks or in other suitable position a bracket or equivalent
carrying one or more adjustable horizontal arms adapted to act upon the clawker
of the rack which operates the shogging wheel and keep the said clawker out of
action for a desired interval and allow it to come in operation again when either the
machine or frame needles are pressing or at such other times as may be desired.
I do not limit myself strictly to the mechanism described for effecting the results
referred to as other forms or variations of mechanism may be employed to serve the
ame purpose and the mechanism described may be modified in certain particulars.
Dated this 27th day of February 1889.
COMPLETE SPECIFICATION.
Improvements in or relating to Straight-bar Knitting Frames.
I, JOHN ARTHUR BARFOOT, of Canning Place, Leicester, Hosiery Manufacturer, 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 straight-bar knitting frames and is particularly applicable

page_text: to machines constructed on the Cotton's principle and known in the trade as 'shog
bar frames employed in the production of Cardigan Jackets and similar goods, and
the object of the invention is to effect certain alterations or improvements in the
construction of the said machines by means of which the pattern of the fabric may
be varied at the will of the operator, as is hereinafter described. In the manufacture
of Cardigan jackets it is frequently desirable to alter or vary the pattern of certain
parts of the garment, such as the pockets, cuffs, etc., during the course of manufacture,
in order to give the garment a more ornamental appearance, and heretofore this has
been done upon this particular class of frames viz. the 'shog bar' frames by the
shogging or lateral movement of the machine needle bar at the time when the machine
needles were pressed i.e. at every second or return traverse of the thread carrier.
Now according to this invention I provide that the machine needle bar may be
shogged or moved laterally at every half course, that is, at the end of every traverse
of the thread carrier.
The invention will be more clearly understood by reference to the accompanying
drawings in which Figure 1 is a perspective view of so much of a knitting machine of
the class before mentioned as is necessary to illustrate my invention.
Fig. 2 is a front elevation of Fig. 1, drawn to a larger scale.
Fig. 3 is a section on on the line Y. Z of Fig. 2.
Fig. 4 is a sectional elevation on the line X. X of Fig. 2.
Fig. 5 is a sectional plan, and Fig. 6 an elevation, showing the attachment of the
roller C to the rocking lever C.
In Cotton's shog bar' frames of ordinary construction the machine needle bar
shogs or moves laterally, for the purpose mentioned, at the end of every second or
return traverse of the thread carrier and while the machine needles are pressing.
The shogging operation is effected in the usual manner by means of the following
well known mechanism, in which A is the ordinary shogging wheel from which the
machine needle bar ultimately receives its lateral movement, the former being actuated
by a ratchet wheel B formed integrally therewith and mounted on the same axle B'.
The ratchet wheel B is operated by the pawl B2 pivotted at the upper end of the
spring-controlled rocking lever C which is moved forward by the usual cam which
through the medium of the spring is in constant peripheral contact with the
roller C2 on the rocking lever C. The shogging wheel A causes the machine needle
bar to move laterally at the end of every return traverse of the thread carrier through
the operation of the following usual mechanism. The vertical lever E which is
pivotted at its upper end E2 to the side of the standard has its lower end in contact
with the side of the shogging wheel A and is moved laterally by the projections or
cam plates A¹ on the latter, which through the medium of the connecting bar E¹
causes the horizontal lever F, Figs. 1 & 2, to move on its pivot F¹. This movement
on the part of the lever F causes the latter to bear against the collar G and com-
municates a lateral movement to the machine shaft H and finally to the machine
needle bar to which the shaft H is connected. So far the construction and operation
of the frame are of the usual well known character. In order to carry this invention
into effect and cause the machine needle bar to shog at the end of every single
traverse of the thread carrier it is necessary for the shogging wheel A to revolve
at twice its present speed, so that instead of the end of the lever E remaining on the
outer edge of one of the projections or cam plates A¹ while the thread carrier
completes its return traverse, it shall only remain thereon during such time as the
thread carrier makes a single traverse over the needles.
To obtain this double or increased speed of the shogging wheel A it is arranged that
the ratchet wheel B which operates it shall rack twice or move two teeth forward in
the time that it now racks once. This result is obtained by mounting on the cam-
shaft D an additional or auxiliary cam J which as will be noticed is in peripheral
contact with the roller C² and shaped in such a manner as to move the rocking lever C
and pawl B2 twice during every complete revolution of the shaft D. The roller C
can be moved onto the cam J for shogging the machine needle bar at the end of every
traverse of the thread carrier, or onto the next adjacent cam X for shogging in the

page_text: usual way, by means of the lever K the upper forked end K¹ (Figs. 4 and 5) of which
engages with the roller C and the other end of which terminates in a handle K² to
enable it to be partly turned on its fulcrum or centre K³ on the end of a bar L fixed
to the rocking lever C by means of screws L' for the purpose named. In order that
the machine needle bar may perform the shogging operation during the pressing of
the frame needles instead of while the machine needles are pressing.
I mount on the side of the ratchet wheel M (from which the wheel N derives its
motion to shog the shafts N' N2), one or more arins O each provided near its end with
a boss or tubular socket O' partly enclosing a spindle P adapted to be extended and
withdrawn by means of the pin or stud P₁ connected to the saine and passing through
a slot P* in the tubular socket O'.
Each of the spindles P when in its outer or extended position is kept rigid and
secure from accidental movement by the spring R the tongue R¹ of which passes
through a slot O2 in the tubular socket O' and lodges in a groove P³ in the side of the
spindle P.
The mechanism hereinbefore described for shogging the machine needle bar is put
in or out of action for a given interval i.e. until such time as the frame-needles are
brought under the influence of the presser, when the shogging mechanism may again
be allowed to come into operation.
To effect this result one of the spindles P, preferably the one which has last
passed the pawl B2, is moved by hand into its extended position, as shown in the spindle
uppermost in Fig. 2, so that before completing its next revolution it will come into
contact with the pawl B2 and elevate it and hold it out of action for an interval
equal to that in which the ratchet wheel B would otherwise have moved forward two
teeth.
The spindle P continuing to revolve with the ratchet wheel M. passes out of contact
with the pawl B' whereon the latter immediately falls of its own weight and cominences
to actuate the ratchet wheel B, and the mechanism for operating the machine needle
bar will come into operation as before described.
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 :-
:-
1. The application to a knitting machine such as described of mechanism or
apparatus to cause the machine needle bar to shog at the end of every traverse of the
thread carrier substantially as and for the purpose described.
2. The application to a knitting machine such as described of mechanism or
apparatus for automatically causing the machine needle bar at certain intervals to shog
alternately during the pressing of the machine needles and frame needles or vice versa
substantially as and for the purpose described.
3. In a knitting machine the combination of one or more arms such as O each
provided with a tubular socket O' carrying a spindle P capable of being extended or
withdrawn by a pin P¹ and secured against accidental movement by a spring R
substantially as and for the purpose described and illustrated in the accompanying
drawings.
4. In a knitting machine the combination with the special features set forth in the
preceding claiming clause of a cam J substantially as and for the purpose specified and
illustrated in the accompanying drawings.
Dated this 25th day of November 1889.
2004.
JOHN ARTHUR BARFOOT.
W. P. Thompson & Boult,
Agents for the Applicant.