Improvements in Knitting Machines.
Year: 1894

page_text: Date of Application, 27th Jan., 1894
Complete Specification Left, 28th Jan., 1895-Accepted, 2nd Mar., 1895
PROVISIONAL DI BUITICATION
Improvements in Knitting Machines.
I, ROUGHSEDGE WALLWORK of the Firm of Henry Wallwork and Company
of Union Bridge Ironworks Manchester in the County of Lancaster, Engineer do
hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in knitting machines, more particularly
circular knitting machines, and the object of my invention is chiefly to simplify
the construction and use of the machines and to obtain therefrom a higher class of
work.
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My invention consists firstly in improved means for retaining the ribber-dial in a
stationary position. To this end I mount centrally upon the ribber arm
eccentric or cam preferably a plate having an eccentric groove about the centre
thereof which I will term a cam-plate. The spindle which carries the ribber dial
passes through the eccentric or cam-plate and is formed with a flanged head. In
the flanged head at the opposite sides are bolt-holes or notches formed. The cam-
plate has a passage cut radially from the edge of the flanged head to the outside
edge of the cam-plate so that the ribber arm may be removed without breaking the
yarn. Upon the yarn-post or column is fixed preferably an eccentric or
equivalent thereof in such a manner that it may be readily adjusted radially to
alter the position of the dial. The equivalent may consist of a radial-arm having
a stud thereon. An arm or lever having the ends forked is constructed and
arranged to engage in and slide upon the cam-plate at one end and upon the
eccentric, pin, or equivalent at the other end. A roller mounted on the underside
of the lever engages in the groove of the cam-plate. The lever is guided to slide
longitudinally by the flanged head of the spindle aforesaid. Upon the lever are
fixed two projections in such manner that they slide alternately in and out of the
bolt-holes or notches of the flanged head of the ribber-dial-spindle, with the
movement of the lever and so that alternately a projection or pin engages
the flanged head and so causes the dial to remain stationary.
My invention consists further in improvements in the manner of construction and
arrangement in the cylinder of the "sinkers" or work-holders, this part of my
invention having reference to the Specification Number 3136 of the year 1893. In
place of arranging the "sinkers or work-holders in separate fixings and in a
separaté cylinder I mount all of them in the main cylinder which I cut to receive
them, and in place of pivoting each one upon a separate pin I turn a groove in
the cylinder into which a wire-ring which may be formed in several segments
passing through each "sinker" is secured by screw clamps or by other suitable
means.
My invention consists further in the improved construction and arrangement of
the cam-action for depressing or freeing the "sinkers or work-holders. In place
of fixing the cam we cause it to move, upon reversing, in a radial slide in a
convenient position on the machine, and also cause the slide to act as a support to.
the ribber-needles when out at full extent.
R. J. URQUHART,
57, Barton Arcade, Manchester, and 5, Clayton Square, Liverpool,
Consulting Engineer and Patent Agent.

page_text: improvements in Knitting machines..
I, ROUGHSEDGE WALLWORK of the Firm of Henry Wallwork & Company
of Union Bridge Ironworks Manchester in the County of Lancaster, 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:-
My invention relates to improvements in knitting machines, more particularly
circular knitting machines, and the object of my invention is chiefly to simplify
the construction and use of the machine and to obtain therefrom a higher class of
work.
The first part of my invention consists in the improved manner in which I
support the ribber-dial" in a stationary position in a revolving arm without
interference with the carrying of the yarn round the ribber dial, and also obtain
lateral adjustment for the needles therein.
The second part of my invention consists in the improved manner of mounting
the sinkers" or work-holders on the cylinder, having reference to Patent
No. 3136 A.D. 1893.
"
My invention consists, thirdly, in the improved construction of the reversible
cam arrangement by which the "sinkers or work-holders are relieved from holding
the work while the loops are being formed upon the needles.
In order that my invention may be more readily understood I have attached
hereunto a sheet of drawings to which I will now refer.
In the said drawings Figure 1 represents partly in section an elevation of a
circular knitting machine embodying my improvements. Fig. 2 represents a plan
of the same. Fig. 3 a section of part of the cylinder, Fig. 4 a sectional elevation
of the revolving yarn-carrier, Fig. 5 an elevation of the sliding-cam.
In the several figures the same parts are indicated by similar letters of
reference.
Referring now to Figures 12 and 4-in carrying out the first part of my
'invention, in order to support the ribber-dial in a stationary position so that the
yaru may be carried round the needles in the same, I mount upon the ribber arm (
an eccentric or cam a¹ preferably a circular plate containing an annular groove a
in its upper surface eccentrically mounted and arranged to rotate with the ribber
arm a. Through the eccentric a¹ and ribber-arm a is passed a spindle & having a
disc-head at its upper end and carrying the ribber-dial & at its lower end, so
fitted that the ribber-arm a may rotate upon it. In order to hold the spindle b to
prevent it and the ribber-dial from turning round with the ribber-arm a, I make
two bolt holes 33 in the disc-head in the same plane and axial line or form one
hole or groove through. In connection with the bolt holes in the disc-head b¹
I arrange a guide-plate d sliding upon the face of the eccentric a¹ and upon a
support fixed to the yarn-post c. Said guide-plate carries a roller d' engaging in
the annular groove, and fingers d sliding in the bolt holes in the disc-head b',
the fingers being of such length and space apart that during one revolution of the
eccentric a' each finger leaves the disc-head so that the yarn, which passes through
a thread hole a' formed in the eccentric. close up to the disc-head and opened out
by means of a slit a' at the periphery of the eccentric, may be carried round the
needles in the ribber-dial by the rotation of the ribber-arm a carrying round with
it the eccentric a'.
c

page_text: "
of
The guide-plate d is forked or opened in one part at the larger end dª resting
on the eccentric for the purpose of allowing the yarn to be inserted into the
slit leading to the thread hole in the eccentric so that ribber-arm and its
attachments may be removed or replaced without breaking the yarn. The other
end d is preferably forked or slotted to permit of longitudinal movement upon the
support c' carried by the yarn post e which support forms a guide for the end
the guide plate and is capable of lateral adjustinent by which the end of the
guide-plate may be shifted laterally causing the ribber-dial to move round a few
degrees. I may use any other suitable means of adjusting the end of the guide-
plate in a lateral direction upon the yarn-post. Referring now to the second part
of my invention which is illustrated by Figures 1, 2, and 3, instead of mounting the
"sinkers or work-holders in separate fixings, and arranging these in a separate
cylinder, I mount them in one cylinder as indicated in Figures 1 and 3 the latter
view shewing a full sized part of the cylinder f. For clearness most of the sinkers
and needles are not shewn in the drawings. The sinkers e I make of the form
shewn, and for mounting them, the cylinder f, Figures 1 and 3 has a number of
radial slits spaced round the upper end into which the "sinkers" e are inserted.
At a suitable distance below the top of the cylinder is turned a groove ³. A wire
ring g, or segmental parts of a ring preferably, is or are passed through a number
of the "siukers" which are placed in position in the radial slits and the ring-
segment carrying these "sinkers" is inserted in the groove f* and held in position
there preferably by the heads of screws g¹ as shewn in Figure 3. The sinkers
are held in position by springs arranged on the outside of cylinder ƒ as shewn,
leaving the interior of the cylinder without any obstacles to the descent of the
work and protecting the springs from dirt.
"
The manner of carrying out the third part of my invention is illustrated in
Figures 1, 2 and 5 of which Fig. 1 shews the reversible cam-arrangement operating
the "sinkers" or work-holders; Figure 2 the same in plan and Fig. 5 an elevation
of the slide-block or sliding-cam. To the yarn guide-bracket I fix a guide /
which is preferably formed as a curved plate having a slot concentric with the
cylinder as shewn by Figures 1 and 2, the upper surface of the guide 7' serving as
a support or rest for the needles when out at their full extent. In this slide
I arrange a slide-block or sliding cam k which is bevelled off towards each end
upon the underside and is capable of sliding freely the full length of the slot /*.
The length of the travel in the slot may be shortened by the use of the
eccentrics or by other suitable means. Two adjustable catches are fixed upon
the revolving cylinder m by which the slide block k is moved in the guide ¹ upon
each reversal of motion of the machine.
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. In circular knitting machines the arrangement of mechanism for holding the
ribber-plate spindle stationary by means of sliding-bolts or their equivalents
engaging therewith and operated by means of an eccentric or cam on the arm
supporting the ribber plate spindle and in such a manner that the rotation
of the yarn guided in said eccentric or cam round the ribber-plate spindle is
not impeded substantially, as hereinbefore described and illustrated by the
drawings.
2. In combination with the arrangement claimed in the preceding claim, the
arrangement of mechanism for varying the position of the ribber-plate substantially
as herein before described.
3. In knitting machines with oscillating "sinkers" or work-holders the mounting
of the same in one slotted cylinder substantially as hereinbefore described and
illustrated by the Figs. 1 and 3 of the drawings.
4. The arrangement of the reversible sliding-can operating the "sinkers" or

page_text: work-holders and concentrically slotted guide and means of adjustment substantially
as herein before described with reference to Figs. 1 3 and 5 of the drawing.
Dated the 26th day of January 1895.
R. J. URQUHART,
57, Barton Arcade, Manchester, and 5, Clayton Square, Liverpool,
Consulting Engineer and Patent Agent.