Year: 1888

page_text: Date of Application, 27th Apr., 1888
Complete Specification Left, 8th Jan., 1889
Complete Specification Accepted, 16th Feb., 1889.
I, JOHN STEVENSON of Newtownards in the County of Down in Ireland, Hosiery
Manufacturer do hereby declare the nature of this invention to be as follows:-
My invention is applicable to that class of knitting machines in which two sets of
needles are used, commonly known as Circular Ribbed Knitting Machines and my
object is to produce a greater quantity and variety of knitted fabric by the use of two
or more double cams working simultaneously in both the rib dial and the cylinder or
frame of the machine.
The cams are so arranged that they can be worked independently as commonly
practised..
Any form of rib can be made and the welt is formed in the usual way by putting out
of action both of the welt cams.
The welt cams are actuated by direct action and are kept in position by pins
or bars passing through slots in the rib cam-shell and secured by nuts and springs or
other equivalents. The welt cams and stitch cams being on the same plane the rib
needles are prevented from drooping or falling down at the latch end.
For more accurately regulating the stitch I provide the rib spindle with a flanged
socket and a knob each threaded at one end so as to be screwed together for the
purpose of adjusting the rib dial, and a screw in the knob prevents it shifting when
adjusted.
When two or more double rib cams are not required I remove the cam-shell which
carries them and in their stead employ a single cam of similar construction.
I make the second cylinder guard and stitch cams shorter than the guard and stitch
cams employed on the opposite side of the machine thereby giving greater space for
the operator to manipulate the needles and requiring only one upthrow cam which I
actuate by a slide on the cylinder cam-shell.
The second yarn bobbin and carrier rest on the rib spindle and are stationary
and the large bobbin may thus be used. Both carrier and bobbin can be removed
at pleasure.
Indicators for securing accuracy of stitch are provided.
The cams are applicable to machines of any gauge or diameter and of various makes.
HYNDMAN & DICKSON,
6 Waring Street, Belfast,
Agents for Applicant.

page_text: 1, JOHN STEVENSON of Newtownards in the County of Down in Ireland 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:
My invention is applicable to that class of knitting machines in which two sets of
needles are used commonly known as Circular Ribbed Knitting Machines and my object
is to produce a greater quantity and variety of knitted fabric by the use of two or more
double cams working simultaneously in both the rib dial and the cylinder or frame of
the machine.
The cams are so arranged that they can be worked independently as commonly
practised.
Any form of rib and also Cardigan and fancy stitches can be made and the welt is
formed in the usual way by putting out of action both of the welt cams.
The welt cams are actuated or adjusted manually by direct action and are kept in
position by pins or bars passing through slots in the rib cam-shell and secured by nuts
and springs or other equivalents, the pressure of the springs against the top of
the cam holding the adjustable portions or welt cams in position when in or out
of action.
Rotary motion is given to the cams by means of a pin or bolt which drops from a
moveable crossbar into the cam shell.
The welt cams and stitch cams being on the same plane, the rib needles are pre-
vented from drooping or falling down at the latch end.
For more accurately regulating the stitch I provide the rib spindle with a flanged
socket and a knob or loose collar, the socket being chased at the knob or collar end
with a screw thread and the knob or collar being tapped to receive the chased portion
of the socket so as to be screwed together for the purpose of raising or lowering the
rib dial by means of which the coarseness or fineness of the stitch is regulated
and a thumb screw in the knob or collar prevents it shifting when the socket and
knob or collar are adjusted. A thumb screw is also provided in the cross bar to prevent
the socket shifting.
When two or more double rib cams are not required I may put one welt cam
out of action or I may remove the cam-shell which carries them and in their
stead employ a single cam of similar construction and similarly actuated or
adjusted.
I make the second cylinder guard and stitch cam shorter than the guard and stitch
cam employed on the opposite side of the machine, thereby giving greater space for the
operator to manipulate the needles and requiring only one upthrow cam which I actuate
by a slide on the outside of the cylinder cam shell.
The second yarn bobbin and carrier rest on the rib spindle and are stationary and
the large bobbin may thus be used.
Both carrier and bobbin can be removed at pleasure.

page_text: Indicators as ordinarily used for securing accuracy of stitch are provided for both
the cylinder stitch cams.
The cams are applicable to machines of any gauge or diameter and of various
makes.
The cams and guards which I have described effect the work in the same way as the
ordinary cams and guards.
For ordinary tubular knitting, while the stitch and welt cams are operating in the
usual way on one side of the machine, the cams and guards introduced by me on the
opposite side make a second course of work at the same time so as to produce double
the ordinary amount of ribbed or plain work and I may, in any of the work, use
different colors or qualities of yarn on the bobbins. By putting either of the welt
cams or the short stitch cam out of action I also produce different varieties of fancy
stitch. I can by setting one of the welt cams partially out of action and putting
the short stitch cam and upthrow cam out of action produce the Cardigan stitch.
For the purpose of making the heels and toes of stockings and socks, in addition to
throwing the rib cams out of action as heretofore practised, I also put the short
stitch cam and upthrow cam out of action and I remove the second thread during the
operation.
And in order that my said invention may be more fully understood I shall now
proceed to refer to the several sheets of drawings hereunto annexed the same letters of
reference being used throughout all the figures to indicate the same or corresponding
parts of my machine.
Fig. 1 is an elevation of the knitting machine shewing the geared reversing ring
and standards with the cross bar and socket, the rib spindle and the stationary carrier
supporting a large or second yarn bobbin ; also the dial and double cams for actuating
the horizontal needles and the cylinder stitch cams for actuating the upright needles;
also the usual yarn bobbin and the standard and lever for regulating tension &c. all
placed on a table as ordinarily arranged.
Fig. II is a plan of the machine shewing the cross bar and pin passing through it
to the double cam; also the attachments for regulating the cylinder stitch cams.
Fig. III is a detail of the socket, the knob or loose collar and the rib spindle.
Fig. IV is a development of the inner face of the shell, shewing the stitch
cams, guards and three upthrow cams for actuating the upright noedles, with
a slide and pin on the outside of the shell for regulating one of the upthrow cams.
Fig. V is an underside plan of the double welt cam, shewing the forms and positions
of the welt and stitch cams when in action and the mode of adjusting them by the aid
of bolts, nuts and springs.
Fig. VI is a side elevation of the parts shewn on Fig. V.
Fig. VII is an underside plan of the single welt and stitch cam, showing the form
and position of the cam when in action and the mode of adjusting same by means of
a bolt, nut and spring.
Fig. VIII is a side elevation of the parts shown on Fig. VII. a, a are the standards
on the geared reversing ring of the machine; b is the moveable cross bar with thumb
screw, b, for keeping the socket, c, in position; d is the knob or loose collar with a
thumb screw, d', to keep it in position; e is the rib spindle; is the stationary carrier
supporting a large or second bobbin, g, arranged with a conical top and eyelet, f¹, to
guide the yarn from the bobbin to the needles; h is the dial is the inner or
stationary cylinder which carries the upright needles; i is a double cam and is a
single cain for actuating the horizontal needles; k is the pin or bolt dropping from the
crossbar, b, into the cams, i and i, and carrying then round with the geared reversing
ring is the cylinder cam shell of the machine revolving with the geared reversing
ring and in which the short cylinder guard, m, the short cylinder stitch cam, m³, the
ordinary stitch cam, m², the upthrow cams, n, n' and n², and the slide, o for adjusting
the upthrow cam, n, are placed; P, p are threaded pins with adjustable nuts for keeping
the cams, m¹ and m², in position when either in or out of action; is the table of the
machine upon which are placed the standard, q', and the arm, q2, and carrying the
tension lever, is the bench to which the table, q, is attached and which carries
g

page_text: the yarn bobbin, r²; s, s, s, s are the nuts and s¹, s¹ the studs or bolts attached to the
adjustable portions of the cam, i, and passing through slots in the body of the cam; t, t
are the springs for keeping the adjustable portions of the cam, i, in position when the
nut, s, is tightened down upon the stud or bolt, s'; u, and u¹ are the threaded pins
for regulating the stitch cams, v, v, and w, w, we are the double and single welt
cams.
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 use, in knitting machines having two sets of needles, of double cams working
simultaneously in both the rib dial and cylinder or frame of the machine constructed,
actuated or adjusted and employed substantially in the manner and for the purposes
herein before described and shewn in the drawings hereunto annexed.
2. The use, in knitting machines having two sets of needles, of single rib cams con-
structed, actuated or adjusted and employed substantially in the manner and for the
purposes herein before described and shewn in the drawings hereinunto annexed.
3. The use, in knitting machines having two sets of needles, of a rib spindle
arranged with a flanged and threaded socket and a threaded knob or loose collar
constructed and employed substantially in the manner and for the purposes herein before
described and shewn in the drawings hereunto annexed.
4. The use, in knitting machines, of a short cylinder guard and short stitch cam and
of a slide to actuate the upthrow cam constructed and employed substantially in the
manner and for the purposes herein before described and shewn in the drawings here-
unto annexed.
5. The use, in knitting machines, of a stationary bobbin carrier placed on the rib
spindle and arranged with a conical top constructed and employed substantially in the
manner and for the purposes hereinbefore described and shewn in Figure 1 of the
drawings hereunto annexed.
6. The combination, in knitting machines, of a moveable crossbar with the rib
spindle, stationary bobbin carrier, dial, double or single cam and driving pin or bolt
herein before mentioned constructed and employed substantially in the manner and
for the purposes hereinbefore described and shewn in the drawings hereunto
annexed and
7. The combination and arrangement of parts constituting my improved knitting
machine constructed and employed substantially in the manner and for the purposes
herein before described and illustrated by the several drawings hereunto annexed.
Dated this 7th day of January 1889
HYNDMAN & DICKSON,
6 Waring Street, Belfast,
Agents for Applicant.