IMPROVEMENTS IN KNITTING MACHINERY
Year: 1879

page_text: LETTERS PATENT to Michael Grieve, of 27, Chestnut Street, Leicester, in the
County of Leicester, Factory Manager, for the Invention of "IMPROVEMENTS
IN KNITTING MACHINERY."
Sealed the 8th April 1879, and dated the 4th February 1879.
PROVISIONAL SPECIFICATION left by the said Michael Grieve at the Office
of the Commissioners of Patents on the 4th February 1879.
MICHAEL GRIEVE, of 27, Chestnut Street, Leicester, in the County of Leicester,
Factory Manager. "IMPROVEMENTS IN KNITTING MACHINERY."
This Invention has for its object improvements in knitting machinery, and relates
especially to appliances to be used in connection with the knitting machines known
as "Cotton's machines," and which machines were patented by one William Cotton
in the year 1864, No. 3123.
For the purpose of thickening, or as it is termed "splicing," the fabric from the
selvage for a part of the way across to give additional substance to the seats of
pants and for like uses I provide extra thread carriers to work near the selvages of
the fabric, or I may employ an extra carrier at one selvage only. These extra
carriers are capable of sliding independently along a fixed guide bar, and they
receive motion from the main thread carrier which traverses from selvage to selvage
of the fabric.
The main carrier is provided with a head upon which a pair of spring bolts slide;
they are drawn back at certain times by cam pieces carried upon the frame of the
machine.
When the extra thread carriers are in use they stand in the path of the main
carrier as it traverses to and fro along the row of needles. When the main thread
carrier approaches the extra thread carrier the bolts upon its head are drawn back
and the main carrier comes into contact with a stem projecting upwards from the

page_text: extra carrier, and continuing its movement it pushes the extra carrier before it until
it arrives at the selvage of the fabric. Then when the main carrier commences to
return.one of the bolts on-the-head-of-the-main carrier (which spring, ont again
immediately on passing the cam piece by which they are withdrawn) acts against
the stem of the extra carrier and moves it back, causing the extra carrier to travel
with the main carrier until the position is arrived at in which the cam piece with-
draws the bolt, and then the extra thread carrier is liberated and it remains where
it is until on-the next-traverse-of-the main thread carrier it is again driven before
it. The action is similar at each selvage when two extra thread carriers are in
operation.

page_text: SPECIFICATION in pursuance of 'the conditions of the Letters Patent filed by
the said Michael Grieve in the Great Seal Patent Office on the 2nd August.
1879.
MICHAEL GRIEVE, of 27, Chesnut Street, Leicester, in the County of Leicester,
Factory Manager. "IMPROVEMENTS IN, KNITTING MACHINERY."
This Invention has for its object improvements in knitting machinery, and relates
especially to appliances to be used in connection with the knitting machines known
as "Cotton's machines," and which machines were patented by one William Cotton
in the year 1864, No. 3123.
For the purpose of thickening, or as it is termed "splicing," the fabric from the
selvage for a part of the way across to give additional substance to the seats of
pants and for like uses I provide extra thread carriers to work near the selvages of
the fabric, or I may employ an extra carrier at one, selvage only. These extra
carriers are capable of sliding independently along a fixed guide bar, and they
receive notion from the main thread carrier which traverses from selvage to selvage
of the fabric.
;
The main carrier is provided with a head upon which a pair of spring bolts slide
they are drawn back at certain times by cam pieces carried upon the frame of the.
machine.
When the extra thread carriers are in use they stand in the path of the main
carrier as it traverses to and fro along the row of needles. When the main thread
carrier approaches the extra thread carrier the bolts upon its head are drawn back
and the main carrier comes into contact with a stem projecting upwards from the
extra carrier, and continuing its movement it pushes the extra carrier before it
until it arrives at the selvage of the fabric. Then when the main carrier commences
to return one of the bolts on the head of the main carrier (which spring out again
immediately on passing the cam piece by which they are withdrawn) acts against
the stem of the extra carrier and moves it back, causing the extra carrier to travel
with the main carrier until the position is arrived at in which the cam piece with-
draws the bolt, and then the extra thread carrier is liberated, and it remains where
it is until on the next traverse of the main thread carrier it is again driven before
it. The action is similar at each selvage when two extra thread carriers are in
operation.
In order that my said Invention may be most fully understood and readily
carried into effect I will proceed to describe the Drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a perspective view of so much of a knitting machine as is concerned
in my Invention. a is the ordinary thread carrier; it is carried upon a head b,
which in the usual way is caused to slide or traverse to and fro along a guide bar
over the entire width of the work c which is in process of production. d, d, are the
additional or "
splicing" thread carriers; they are carried upon a bar d' which is
shown to a larger scale in Figure 2. The head b, which is shown more clearly and
to a larger scale in Figure 3, has upon it two sliding bolts e, e, which the springs e¹, e¹,
draw constantly forward and hold in an advanced position except when the springs
are overcome by the levers f, f, pressing against studs e¹¹, ell, on the bolts. The
levers have their fulcra at f',f', and their inner ends are in contact with a stud g¹
on a slide g, so that when the slide is forced forward the bolts are drawn back.
h, h, are inclines fixed in suitable positions upon the frame of the machine, and
which act against the end of the slide g when the head b passes them, and so at
these times the bolts e are drawn back. The method of action has been already
explained. When the additional or splicing thread carriers are in use they stand
in the path of the main thread carrier; say that they are both rosting against the

page_text: stops d, d, on the bar d, and that the main thread carrier is between them. Then
as the main thread carrier moves towards a selvage the bolts e, e, are drawn back
by the action of one of the inclines h, admitting the carrier a to come directly into
contact with the additional carrier dwhich is between it and the selvage, and the
main carrier drives this additional carrier before it until the selvage is reached and
it has arrived at the end of its course. When the main thread carrier commences
to return, the bolt e next to the additional carrier d coming against the upper part
of its stem causes it to return with the main carrier a until the incline h is reached,
and then the bolt is drawn back and the carrier d released. This carrier then
remains stationary until the return of the main carrier, which in the mean time
travels on and acts in a similar manner with the additional or splicing thread carrier
at the other selvage, if both be in use. One or both of the splicing thread carriers
may however be put out of use simply by turning up the inclines h, h, out of the
way, to admit of which their stems are jointed, as the Drawing shows. The
additional thread carriers then are pushed to one side and they are brought back
again by hand when they are next required for use.
Having thus described the nature of my said Invention and the manner of per-
forming the same I would have it understood that I claim,-
"
First. The combination with the head b of the main thread carrier of bolts e, e,
acting in conjunction with inclines h, h, to operate additional or splicing thread
carriers d, substantially as described.
Second. The mechanism for operating additional or splicing thread carriers, sub-
stantially as described, and represented in the annexed Drawings.
In witness whereof, I, the said Michael Grieve, have hereunto set my hand
and seal, this Thirty first day of July, in the year of our Lord One thousand
eight hundred and seventy nine.
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