Improvements in or relating to Circular Knitting Machines.
Year: 1899

page_text: Date of Application, 26th May, 1899
Complete Specification Left, 23rd Feb., 1900-Accepted. 19th May. 1900
PROVISIONAL SPECIFICATION.
Improvements in or relating to Circular Knitting Machines.
We, OSMOND TABBERER, ALEXANDER LORRIMER, GEORGE OSMOND TABBERER,
MAURICE LORRIMER, FREDERICK SAMUEL SHIPP, and WILLIAM HENRY TABBERER,
of the Firm of Pool, Lorrimer and Tabberer, of Nos. 33 and 35, King Street,
Leicester, in the County of Leicester, and Lockhurst Lane Foleshill, in the
County of Warwick, Fancy Hosiery Manufacturers, do hereby declare the nature
of this invention to be follows:-
This invention refers to improvements in or relating to circular knitting
machines of the Griswold type having four or more feeders with fixed dial and
needle cylinder, revolving shell, and the work running down to taking down
mechanism or apparatus for winding the fabric upon the ordinary rollers.
It has been found that the above machines as at present constructed with up-
throw and adjustable stitch cams and short needles are too-slow and cannot be
worked at a higher speed without the risk of displacing or breaking both the
frame and machine needles and damaging the plain, ribbed or fancy fabric made
thereon; also that the yarn bobbin carrying devices as at present arranged
around the revolving shell and needle cylinder if run at a higher speed causes the
breaking and mixing of the several threads. To overcome these objections and
in order that such machines can be run at a much greater or nearly double the
speed, and consequently increase the capacity of the machine and the production
of work, and that the needles shall be held from falling out of the tricks a
sectional needle ring or rim is fixed inside the top of each segmental curved plate
fitted to the revolving shell, said needle ring or rim going all round the needle
cylinder, the ends fitting close to each other in all the sections or feeders, under-
neath said ring in each sectional plate is fitted an up-throw, down-throw and stop
cam, and a fixed cam race, all of a suitable shape, the fixed cam race coming next
to, and the top of its incline in line with the race way of the flat surface of the
shell, between the down throw and stop cam is a vertically adjustable cam for
regulating the length of loop, or obtaining the length of loop desired at each
feeder or division in the frame of the machine. The above mentioned clasp or
needle ring comes to about the centre of the frame needles which are longer in
the stems than now used in machines of this character and are of the ordinary
kind as employed in hand Griswold" machines.
"
In the machine or ribbing dial the machine or ribbing needles are kept in
their respective positions, also by sectional rings or rims fitted to and in line
with the ordinary taking out bits, and complete the circle of the ribbing dial and
machine race.
By the employment of the needle rim to hold the frame needles in their
vertical position and from falling out of the tricks of the stationary needle cylinder
and getting the depth of stem as above stated, oil can now be used in the needle
cylinders without fear of damaging the work, which cannot be done in machines
of the like kind as at present constructed.
The arms for carrying the bobbin spindles and thread guide peices are mounted

page_text: upon a central sleeve which is loosely mounted on the dial shaft and revolves
around it this keeps the yarn bobbins well balanced more centrally than by the
old outside swinging movement.
2000
W. BESTWICK MAXFIELD,
Applicants' Agent
Improvements in or relating to Circular Knitting Machines.
We, OSMOND TABBERER, ALEXANDER LORRIMER, GEORGE OSMOND TABBERER,
MAURICE LORRIMER, FREDERICK SAMUEL SHIPP, and WILLIAM HENRY TABBERER,
of the Firm of Pool, Lorrimer and Tabberer, of Nos. 33 and 35, King Street,
Leicester, in the County of Leicester, and Lockhurst Lane Foleshill, in the
County of Warwick, Fancy Hosiery Manufacturers, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement:
This invention refers to improvements in or relating to circular knitting
machines of the Griswold type having four or more feeders with fixed dial and
frame needle cylinder revolving shell and cam plate, the work passing to taking
down mechanism or apparatus for winding the fabric upon ordinary rollers.
It has been found that the above machines as at present constructed with up-
throw and adjustable stitch cams and short needles are too-slow and cannot be
worked at a higher speed without the risk of displacing or breaking both the
frame and machine needles and damaging whatever fabric that is at the time
being made thereon; also that the yarn bobbin carrying devices as at present
arranged in such machines around the revolving shell and frame needle cylinder
if ran at a higher speed causes the breaking and mixing of the several threads.
In order that this invention may be cleaily understood reference is made to the
accompanying drawings in which:
Figure 1 is an inner plan view of one of the segmental plates B a series of
which encircle the frame needle cylinder and fits to the revolving shell of the
machine.
Figure 2 is an inner view of the gate C employed to remove or change the
position of the frame or cylinder needles. Figure 3 is an end view of same.
Figure 4 is a sectional view of the frame or cylinder showing the recessed
tricked face.
Figure 5 is an inner view of one of the segmental plates H a series of which
according to the number of feeders employed encompass the machine or ribbing
dial.
Figure 6 a modification of same employed when the machine is set out for
making tuck or fancy work.
Figures 7, 8 and 9 are views drawn nearly full size of the different parts of the
needle ring or rim fitting as seen in Figures 5 and 6, and
Figure 10 is a front view in elevation of the bobbin carrving devices and
thread guides with dial shaft and part of cross head constructed and arranged in
accordance with this invention.
Letters of reference are employed to denote those parts which are new and
figures are used to denote the parts well known. Similar letters and figures
represent like parts in all the figures in which they occur.
The object of the invention is to overcome the objections before stated, and to

page_text: 60
"
seen in
enable the machine to be run at a much greater speed, or nearly double the
speed than is now the case, and so increasing the capacity of the machine and
the production of work therefrom. The needles are kept from falling forward
or out of the tricks in the frame or needle cylinder by the aid of a sectional
needle ring or rim A coming in front of the needles and fixed inside on the upper
edge or in line therewith in each segmental plate B, and gate C
Figures 1 to 3 inclusive." The segments are fitted to each other and to the re-
volving shell 1 of the machine, the gate C is held by the blade-spring c¹ and by
the projections 2 and 3 in the segment of ring at top being placed in corre-
sponding recesses (not shown) in the ends of the other segments A and is used
when it is desired to move or alter the position of the frame needles and can be
lifted out and replaced by the handle "Figure 3." The said sectional needle
ring or rim A projects inwards more than the cams see Figure 3" to fit in the
recessed part 1 of the needle cylinder 6. The number of plates B correspond
with the number of feeders and closely encircle the frame or needle cylinder 6.
In each plate underneath the said needle ring or rim A is fitted the up-throw
cam close in with the fixed cam race 2. Above the cam band in line there-
with is the down throw cam b' which forms a protector or guide for the butts
of the needles. Between the said cam and the stop cam 62 is fitted the ver-
tically adjustable stitch cam 3 and also a wing nut b₁ for regulating or obtaining
the required length of loop at each feeder or division in the frame. The fixed
rising cam is made of steel and fits in an open space in the shell the top of
its incline coming in line with the fixed cam race 4 or race way of the flat sur-
face of the shell. The upper surface of the sectional needle ring or rim A comes
up to about the centre of the frame needle stems and the recessed portion D of
the front or tricked face of the frame or needle cylinder 6. The said frame
needles are longer than those now used in this type of machine and are of the
kinds employed in Griswold hand knitting machines.
"
"
The lower edge of the rim a seen in Figures 2 and 3 is level with the lower
edge of the stop cam 62, the butts of the frame needles riding thereunder,
The machine needles in the ribbing dial are kept from falling out in moving
from cam to cam in each segmental plate by aid of the sectional rings or rims
E, F, and also G, shown in Figures 5 to 9 inclusive, in their respective positions
so as to be in line with the ordinary taking out bits (not shown) on and adjacent
to the segmental plates H and H₁ Figures 5 and 6, which are of the number to
correspond with the number of feeders round the machine cam plate 7, and
screwed down to the ribbing dial by the screw holes for completing the circle
of the dial and machine race. The segmental plates H, Figure 5, are used for
ordinary knitting and carries the following: A pivotal vertically adjustable
switch cam 8, for stiffening or slackening the fabric its upper pivotal end fitting in the
✓ end of the sectional ring or rim E which is screwed down to the outside of the
plate H by its lug e, the other segment F being secured by its lug f to the side
of the plates H and H and to the cam plate. The above forming in conjunction
with the vertically adjustable out-throw cam 9 and guide 10 a combination of
elements to produce the desired result. The upper pointed or rounded end of
the segment F is secured in the position shown in Figures 5 and 6 to the cam
plate so that the butts of the machine needles in coming from the switch cam 8
may run on the inside to the next set of cams in the adjoining plate.
A slight modification of the segmental plate H is shown in Figure 6 and
marked H¹ this is employed when it is desired to run the machine for knitting
tuck or fancy work and differs from H by splitting the out-throw cam 9 at h¹
and fixing the other portion 2 permanently to the plate H and dispensing with
the guide 10. The sectional ring or rim G Figures 6 and 9 is fitted by its lug g
to the side of the plate H¹ and to the cam plate. The segmental rings or rims
such as A for the frame, and E, F and G for the machine keep the needles from
falling out or losing their positions in the tricks of the cylinder and dial. The
frame or cylinder needles 5 have long stems as seen in Figure 4, and the front

page_text: The
tricked face of the frame needle cylinder 6 is recessed at D as before described
which will allow oil to be used as a lubricant in the tricks of the frame needle
cylinder 6, so easing the working of the needles without any fear of damaging
the work. In machines of the kind now in use which have the front tricked
face of the needle cylinder solid it is not possible for oil to be used.
appliances for carrying the bobbins and thread guides are usually fixed to the
cam shell and cause much inconvenience and annoyance by the bobbins working
loose and the threads of yarn getting mixed in the four or six feeders as may be
employed by the outside swinging movement occurring therewith. We desire
to obviate this, and in order to do so we mount four or six arms I according to the
number of feeders employed on the machine upon the flat sides of the central
octagonal sleeve J by the screws i, said sleeve is placed loose upon the vertical
dial shaft 13, which carries at its base the nut 14, machine cam plate 7 and its
boss 7, and coming under this (not shown) is the machine ribbing dial. The
upper end of the dial shaft 13 passes through the bearings in the cross head 15
in the ordinary manner. The lower turned out ends of the arms I carry the
bobbin spindles K and the upper ends also turned at right angles from the
thread guides L and secured thereon by screws m are the movable thread guide
pieces M which serve to tension the yarn, the yarn thread or threads 11 are taken
from the bobbin 12 " seen at right hand side of Figure 10" and threaded through
the hole, eye or tube 7 and conducted through another hole, eye or tube m¹ thence
straight down in the direction of the arrow to the yarn feeder nearest thereto (not
shown). To drive the bobbin carrying frame and yarn guides so that it moves
with the machine a hole m² is made in one of the spindle carrying arms k in
which is inserted the thin end of the stud N fitted upon the plate n secured to
the revolving cam plate of the machine.
By the aforesaid arrangements the yarn bobbins are kept well balanced and
cannot work loose.
We do not confine ourselves to the particular construction shown of the yarn
carrying frame and thread guides for instead of being flat and each end turned
at right angles to form the spindle carrying and yarn guides each may be may
made separately that is to say; the yarn guides and their supports may fit in
the sleeve and the spindle carrying arms screwed or otherwise fitted into the
sleeve which in this case me be circular without departing from our invention.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:-
1. In a circular knitting machine of the character described the employment
of segmental curved plates such as B fitting around the stationary frame needle
cylinder in which are arranged a sectional needle ring or rim A, up-throw
cam b, down throw cam b¹ stop cam b² a vertical adjustable stitch cam 63 steel
rising cam 65, gate C, in combination with the cam races or shell 2 and 4 with
reference to Figures 1 to 3 inclusive of the accompanyng drawings, for the
purpose herein before referred to.
2. In a circular knitting machine of the character described the arrangement
of segmental plates such as H and H in the machine provided with sectional
rings or rims such as E, F and G in combination with swith and out-throw
cams and guides; with reference to Figures 5 to 9 inclusive of the accompanying
drawings for the purpose herein before referred to.
3. In a circular knitting machine of the character described the combination
of segmental frame and machine plates such as B, H and H¹ fitting around the
frame needle cylinder and upon the machine cam plate provided with segmental
rings or rims such as A, E, F and G and cams arranged therein substantially
in the manner and for the purpose as herein set forth.
4. In a circular knitting machine of the character described the employment
of a sleeve such as J, upon the vertical dial shaft having mounted thereon or

page_text: attached thereto arms such as I provided with bobbin spindles and yarn thread
guides arranged and operating in the manner and with reference to Figure 10
of the accompanying drawings.
Dated this 10th day of Rohwua…. 1000
W. BESTWICK MAXFIELD,
Registered Patent Agent, No. 34, Belvoir Street, Leicester,
Applicants' Agent.