Year: 1887

page_text: Date of Application, 17th Oct., 1887
Complete Specification Left, 12th July, 1888
Complete Specification Accepted, 17th Aug, 1888
We, AMBROSE BREWIN and JOSHUA MARRIOTT, 35 London Road, Nottingham,
Machinists, do hereby declare the nature of this invention to be as follows:-
The vertical shaft carrying the two toothed wheels which gear the frame and
machine heads together, has its lower wheel secured upon it, gearing into and
revolving with the frame head in the usual way, but its upper toothed wheel instead
of having vertical teeth, is provided with teeth set at an angle of about twenty degrees
more or less, the toothed wheel on the machine head has its teeth set to a corre-
sponding angle, the upper wheel on the vertical shaft is provided with a key which
slides in a key way cut in the shaft, the flange of the wheel is clipped by a fork
carried by the upper end of a vertically slotted bar which slides on studs projecting
from the vertical back arm of the machine, the upper prong of the fork is slotted at
its back end and is provided with a handle by which the attendant can move it back
clear of the angular teeth of the wheel to enable him to raise the machine head, when
work has to be run on the frame needles or for other purposes.
The vertical bar carries a stud which engages with the back end of a lever, which
rocks upon an axle projecting from a bracket secured to the plate carrying the frame
covers, the front end of the rocking lever is turned outwards at a right angle, and
carries a bit adjustable upon it, which is operated by a vertical cam carried by the
welting wheel.
The vertical shaft before named has a spring helically coiled round it below the
fork, the lower end of the spring rests upon a collar secured on the shaft, this spring
throws the vertical bar and angular toothed wheel upward when the rocking lever is
released by the cam.
The machine needle cam is made of such a form as to allow the machine needles
to be drawn clear of the frame needles all round, while in such position the vertical
bar and angular toothed wheel is lowered, which action shogs the machine head so as
to place each machine needle between two adjacent frame needles.
By such means we are enabled to produce a two and one shogged welt, and a slack
course, automatically without stopping the head.
Dated this Fifteenth day of October 1887.

page_text: Improvements in Circular Knitting Machines.
We AMBROSE BREWIN and JOSHUA MARRIOTT 35 London Road Nottingham
Machinists 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 :-
DESCRIPTION OF THE DRAWINGS.
Figure 1 shows in plan a knitting machine of the usual construction employed in
making circular, ribbed looped fabrics with our improvements applied thereto.
Figure 2 shows a front view of the same. In the two figures portions of the
knitting machine only, are shown sufficient to illustrate our invention.
Figures 3 and 4 show seperate parts of our improvements severally referred to
hereafter.
The vertical shaft carrying the two toothed wheels which gear the frame and
machine heads together has its lower wheel secured upon it, gearing into and
revolving with the frame head in the usual way, but its upper toothed wheel A,
instead of having vertical teeth is provided with teeth set at an angle of about twenty
degrees more or less, the toothed wheel B, on the machine head has its teeth set to a
corresponding angle, the wheel A, is provided with a key C, which slides in a keyway
cut in the shaft "shown by a dotted line on Figure 2," the flange of the wheel A, is
clipped by a fork C₁, carried by the upper end of a vertically slotted bar C³, which
slides on studs projecting from the vertical back arm C³, of the machine, the upper
prong of the fork slides upon the lower one, and is slotted at its back end and pro-
vided with a handle by which the attendant can move it back clear of the angular
teeth of the wheel, to enable him to raise the machine head when work has to be run
on the frame needles, or for other purposes.
The vertical bar carries a stud at its lower end which engages with the left end of a
lever D, rocking upon an axle D¹, projecting from a bracket D2, secured to the plate
carrying the frame covers, the right end of the rocking lever carries a bit. D³, which
is operated by a vertical cam bit D', carried by the usual welting wheel shown
respectively in plan and front view at Figures 1, and 2, the welting wheel is provided
with eighteen ratchet teeth, those numbered 1 to 12 being the teeth with which the
usual racking lever E successively engages while a welt
being made.
The vertical shaft before named has a spring (, helically coiled round it, the lower
end of the spring rests upon a collar A¹ secured on the shaft, this spring throws the
angular toothed wheel A, fork (, and bar C³, upward when the lever D, is released
by the cam D, a right side view of the shaft, spring, wheel, fork, bar and lever is
shown at Figure 3.
The machine needle cam F, shown in plan at Figure 4, is made of such a form as
to allow the machine needles to be drawn clear of the frame needles all round, when
the sliding cam bit is in the position shown by the dotted line F¹ at Figure 4, while
in such position the angular toothed wheel A, is lowered such action shogs the
machine head so as to place each machine needle between two adjacent frame
needles.
The remainder of the machine not shown in the drawings is of the usual

page_text: The movements of the various parts when a welt is required to be made are as
follows:-A studded chain of the usual construction determines the length of fabric
to be made between each welt, it then releases the usual stop lever to give room for
the full traverse of the welting wheel racking lever E, "the welting wheel is shown in
the drawings in the position it occupies after a welt has been made," then studs on the
chain hold the stop lever clear until the lever E, has moved the welting wheel partly
round and engaged with the ratchet tooth 1, the lever riding on the surface of the
tooth 2, until the studded chain releases the stop lever for a welt to be made in the
following manner, the racking lever engages with the tooth 2, then with 3, while a
slack course is being made in the usual way, then with the tooth 4, while a second
slack course is being made, then with the tooth 5, to rock the slack course cam F4,
clear of its lever, the racking lever then engages with the tooth 6, enabling the cam G,
to operate its levers in the usual way to throw inwards the machine jacks for the
machine needles to clear the frame needles, the lever D, being rocked by its cam D*,
to lower the beveled toothed driving wheel A to shog the machine head one needle to
the right and allow the machine needles to pass between the adjacent frame needles
and secure a second series of loops during one revolution of the frame and machine
heads together, the sliding cam bit being in the position shown at F3, Figure 4, the
slide occupying the position shown at F³, when the machine is making the fabric
between the welts, the racking lever then engages with the tooth 7, causing the
welting cam G, to again throw inwards the machine needles clear of the frame needles
during one revolution of both heads, the lever then engages with tooth 8, the cam D,
releasing the lever D, allows the coiled spring C, to press up the beveled toothed
driving wheel A, to shog the machine head one needle to the left, its usual position
when making a two and one ribbed looped fabric, the machine needles remaining in
while the racking lever successively engages with the teeth 9, 10, 11, and 12, the two
series of loops being cleared from the machine needles while the racking lever moves
back to engage with the tooth 13. The studded chain keeping the stop lever released
while the racking lever racks the welting wheel partly round until the lever again
engages with the tooth 1, thereby placing the welting wheel in position ready for
making the next welt, such movements being repeated at the making of each welt.
By such means we are enabled to produce a two and one, or a two and two, shogged
welt and a slack course automatically without stopping the head.
Having now particularly described and ascertained the nature of our said Inven-
tion and in what manner the same is to be performed, we declare that what we
claim is-
The construction and employment of an angular toothed wheel A, engaging with
an angular toothed wheel B, for driving the inachine head, a fork carried by a
slotted bar C, having a stud engaging with a lever D, provided with a bit D³,
rocking upon an axle D', projecting from a bracket I), the lever D, being operated
by a cam bit. D, carried by the usual welting wheel, to lower the wheel A, for
shogging the machine head when making a welt, the wheel A, being raised by a
spring beneath it when the cam D', releases the lever D; The whole working in
conjunction with a circular machine of the usual construction and making a two and
one, or a two and two shogged welt and slack course, automatically without stopping,
substantially as described and illustrated in the drawings annexed.
Dated this Eleventh day of July 1888
AMBROSE BREWIN.
JOSHUA MARRIOTT.