Improvements in Knitting Machines for Knitting Stockings and Clothing.
Year: 1890

page_text: Date of Application, 15th Mar., 1890
Complete Specification Left, 13th Dec., 1890-Accepted, 17th Jan., 1891
PROVISIONAL SPECIFICATION.
Improvements in Knitting Machines for Knitting Stockings and
Clothing.
We, WILLIAM HARRISON of 133 Portland Street, and of Fern Villas, Hyde Grove
Chorlton-on-Medlock, Patentee and Manufacturer and CHARLES WALLACE HARRISON
of Fern Villas Hyde Grove, Chorlton-on-Medlock, Machinist both in Manchester, in
the County of Lancaster do hereby declare the nature of this invention to be as
follows:-
دو
This invention relates to improvements in kuitting machines with parallel beds or
single beds of the description known as the "Harrison or the "Lamb" knitting
machines, which employ latch or tumbler needles, and the object of this invention is
to knit ribbed work more perfectly, and to dispense with cam reversing stops..
..
In order to make a ribbed web more perfect we employ one wing on tension cam
fixed on the cam plate in the position that the ordinary V cam usually occupies; at
each side of the centre wing or tension cam we place a cam to raise in the same
manner as the V cams act in the ordinary cam machines: these two side cams are
fixed in such a position that the one travelling towards the needles pushes the needles
up above the latches, and the centre wing or tension cam draws them down again by
their heels until the stitch is formed: these end raising cams are so fitted that they
slide or yield preferably upwards, when the heels of the retiring or descending needles
strike against them: these cams are fitted on in two pieces, the bottom portion being
stationary and the top portion yielding upwards by the pressure of the heels of the
retiring needles, or in lieu of the upper part being moveable the under portion is
made to yield downwards, the upper portion being stationary, or both top and bottom
portions may be made to yield in opposite directions: these cans are brought back
into position by means of springs. We also use raising cams fastened on to the cain
plate by means of collar screws thus allowing them to swing, and they are held in
position by springs the retiring needles strike these cams pushing them to such an
angle as to permit the needles to pass under them, and the springs bringing them
back into position. We also fit these raising cams to the cams ordinarily used, placing
them alongside of the ordinary wing cams. The needles are thus raised into action
before coming into contact with any wing cam. We place midway above the cams
between the two ordinary wing cams, a small triangle or other convenient shaped cam,
which guides the needles to the wing cam that draws down the needles until the stitch
is formed the retiring needles then pass under or between the raising cam as before
described.
.
The cam is made to retire into the lock plate so as not to project above its
surface. On each side of the carriage by means of a thumb screw, catch, or other
suitable mechanism we raise and retain raised one or more of the raising cams. By
these means one operator is. enabled to knit circular fabric without using stops or
The traverse of
slides such as are generally used at the ends of machines.
the machine either by hand or power is obtained by a combination of chains
and rods.
73
1 11->
L 1000

page_text: COMPLETE SPECIFICATION.
Improvements in Knitting Machines for Knitting Stockings and
Clothing.
We, WILLIAM HARRISON of 133 Portland Street, and of Fern Villas, Hyde Grove,
Chorlton-on-Medlock, Patentee and Manufacturer, and CHARLES WALLACE HARRISON
of Fern Villas, Hyde Grove, Chorlton-on-Medlock, Machinist, both in Manchester, in
the County of Lancaster, 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 improvements in knitting machines with either parallel
beds, or single beds, which have single or double system cams, said knitting machines
being of the description known as the "Harrison ог Lamb" knitting machines, in
which latch or tumbler needles are employed.
دو
The object of this invention is to knit ribbed work more perfectly and to dispense
with cam reversing stops.
In order more clearly to describe this our invention, we have annexed hereunto
a sheet of drawings. In the several views therein shown, similar letters refer to
similar parts.
Fig. 1, represents the cam plate with cams attached, arranged according to this
invention.
Fig. 2, represents the same cams with plate removed.
In order to make a ribbed web more perfect, we employ one wing or tension cam b
fixed on the cam plate a in the position that the ordinary V cam usually occupies.
We place these cams with the broad part at the top and the narrow part down-
wards. At each side of this wing or tension cam we place a cam c. c¹ in order to raise
the needles in the-same manner as the V cams act in the ordinary cam machines: the
lower part of these end raising cams is formed by the cam which is attached to cam
plate a. If the cam plate a is travelling towards the right hard, the heels g' of the
needles 9 will first strike against the end of the cam plate f: the heels of the
needles will then travel in the direction indicated by arrows in Fig. 2 on drawing,
viz. they will travel up the outer inclined surface of cams f and c and will then strike
against the inclined surface of cam : said cam b will thus draw the heels of the
needles down to the point when they will pass along between the cams c and f
the cam c sliding or yielding upwards until the needles have passed beyond the
cams, when the cam c will return to its original position by the action of the
spring h.
The position occupied by these side cams c. c¹ when travelling towards the needles
thus cause said needles to be pushed up above the latches, and the centre wing
or tension cam & draws them down again by their heels until the stitch is formed.
In a modification of our invention, in lieu of the cams c. c being moveable, we
make the cam f to yield downwards as shown in Fig. 3, the cams cc remaining
stationary.
We also make the upper portions c. c. and the lower portion to yield in opposite
directions. These canis c. care secured to the cam plate a by means of the plate j,
on which is a distance piece 7 sliding in the groove m, and are brought back into
position by means of the springs h. h.
In another modification of our invention we use raising cams fastened to the cam
plate by means of collar screws thus allowing them to swing as shown in Fig. 4:
said cains are held in position by the springs 218. The retiring needles strike these
cams in the same manner as herein before described, pushing them to such an angle
as to permit the needles to pass under them, and the springs bring them back into
position. We also fit these raising cams to the cams ordinarily used by placing them
alongside of the ordinary wing cans: the needles are thus raised into action before
coming into contact with any wing cam. We place midway above the cams and
between the two ordinary wing cains a small triangle or other convenient form of

page_text: cam guide the needles to the wing cam that draws down the needles until the
stitch is formed the retiring needles then pass under or between the rising cams
as hereinbefore described. The V cam is also made to retire into the back plate so
as not to project above its surface.
On each side of the carriage by means of a thumb screw, catch or other suitable
mechanism we raise, and retain raised one or more of the raising cams. By these
means the operator is enabled to knit circular fabric without using stops or slides such
as are generally used at the ends of machines.
Having now particularly described and ascertained the nature of this our said
invention, and, in what manner the same is to be performed, we declare that what
we claim is
In knitting machines with either parallel beds or single beds which have single or
double system cams and are of the description known as the "Harrison"
or the
"Lamb
knitting machines in which latch or tumbler needles are employed
the use of cams which are of the form and placed in the position shown on
drawings in the manner and for the purpose substantially as hereinbefore
described.
Dated this 19th day of December 1800
WILLIAM HARRISON.
CHAS. WALLACE HARRISON.