Improvements in Knocking - over Bits and Loop Discharging Mechanism in Knitting Frames, commonly called Cotton's Patent Rotary Frames.
Year: 1889

page_text: Date of Application, 24th Jan., 1889
Complete Specification Left, 23rd Oct., 1889-Accepted, 30th Nov.,
1889
PROVISIONAL SPECIFICATION.
Improvements in Knocking - over Bits and Loop
Discharging
Mechanism in Knitting Frames, commonly called Cotton's Patent
Rotary Frames.
We WALTER LAING and JOHN TURNBULL LAING trading as Dicksons and Laings of
Wilton Mills Hawick in the County of Roxburgh Manufacturers and THOMAS
ALEXANDER ROBSON of the same place Manager, do hereby declare the nature of this
invention to be as follows:-
Our invention relates to that part of Cottons patent Frame called the knocking
over bits and it has for its object, firstly the rolling of the lcops as they leave the
sinkers after pressing and secondly the complete discharging or knocking over of the
old loops over the new loops at the needle head horizontally (instead of perpen-
dicularly as at present) in order to assimilate the fabric made upon Cotton's patent
frames to that made upon the hand frame and usually called Hand-made work.
In order to assist the description reference is made to the accompanying drawings.
We make the knocking over bits to the shape of Fig. 1 for fine guages and to the
shape of Fig. 2 for coarse guages in those frames where the knocking over loads E
are fixed to the knocking over bar or bars, and we make the knocking over bits to
the shape of Fig. 3 for fine guages and to the shape of Fig. 4 for coarse guages in
those frames where the knocking-over leads F aro fixed the reverse way, that is
underneath the pressers.
And the special features of this invention are the following
After the needles bring the loops over the nibs of the sinkers they descend at the
highest part of the curve (a) where they are only partially discharged. The loops are
then carried down over the curve from (a) to (b) the knocking over and pressing cams
being first adjusted to make the needles follow the curve at the dotted line. Buring
this process the pressure or friction is on that part of the loop furthest from the presser
or pressers as they pass down the curve of the knocking over bits from (a) to (6) and
as the needles follow the dotted line under the curve and ascend to the hollow or arch (c)
the friction or pressure is transferred to that part of the loop nearest to the presser
or pressers and at (c) the loops are pulled over and thoroughly discharged. The
needles then ascend while the loops are held fast by the curve or arch (c) and the
loops are thereby prevented from going back onto the needle head, while at the same
time the loops are formed and discharged with about one third of the weight usually
required on the rolling up appliance to bring the fabrick from the needles.
After the needle head ascends above the line (d) the needles fall back and the loops
which are held fast by the curve or arch (c) are thereby relieved.
The loops being now completely formed, the needles ascend to the usual position and
the same thing is repeated.
By these improvements in the knocking-over bits the frame is enabled to knit a
heavier thread or yarn and the fabric is consequently more bulky and elastic.
Dated this 21st day of January 1889

page_text: COMPLETE SPECIFICATION.
Improvements in Knocking - over Bits and Loop Discharging
Mechanism in Knitting Frames, commonly called Cotton's Patent
Rotary Frames,
We WALTER LAING and JOHN TURNBULL LAING trading as Dicksons and Laings of
Wilton Mills Hawick in the county of Roxburgh Manufacturers and THOMAS
ALEXANDER ROBSON of the same place Manager 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, reference being had to the drawings
hereunto annexed and to the letters and figures marked thereon:―
Our invention relates to that part of a Hosery Machine called the knocking
over bits or blades; the principle of which machine was originally invented by
William Cotton of Loughborough and is generally known by whomsoever made
as Cotton's Patent frame. The knocking over bit as herein described has for
its object firstly the rolling of the loops as they leave the sinkers after pressing, and
secondly the complete discharging or knocking-over the old loops over the new
loops at the needle head borizontally (instead of perpendicularly, as at present),
in order to assimilate the fabric made upon Cotton's Patent frames to that made upon
the Hand-frame and usually called Hand-made work.
We will now describe the invention by the aid of the accompanying drawings.
We make the knocking-over bits to the shape of Fig. 1 for fine gauges and to the
shape of Fig. 2 for coarse guages in those frames where the knocking-over leads E
are fixed to the knocking-over bar or bars; and we make the knocking-over bits to
the shape of Fig. 3 for fine gauges and to the shape of Fig. 4 for coarse gauges in
those frames where the knocking-over leads F are fixed the reverse way, that is,
underneath the pressers.
And the special features of this invention are the following:
After the needles bring the loops over the nibs of the sinkers they descend at the
highest part of the curve (a) where they are only partly discharged, the loops are
then carried down over the curve from (a) to (b) the knocking-over and pressing
cams being first adjusted to make the needles follow the curve at the dotted line.
During the process the pressure, or friction, is on that part of the loop furthest
from the presser or pressers as they pass down the curve of the knocking-over bits
from (a) to (6); and as the needles follow the dotted line under the curve and ascend a
to the hollow or arch (c) the friction or pressure is transferred to that part of the loop
nearest to the presser or pressers; and at (c) the loops are pulled over and thoroughly
discharged. The needles then ascend while the loops are held fast by the curve or
arch (c) and the loops are thereby prevented from going back on to the needle head,
while, at the same time, the loops are formed and discharged with about one third of
the weight usually required on the rolling up appliance to bring the fabric from the
needles. After the needle head ascends above the line (d) the needles fall back
and the loops which are held fast by the curve or arch (c) are thereby releived.
The loops being now completely formed the needles ascend to the usual position and
the same thing is repeated.
By these improvements in the knocking-over bits the frame is enabled to knit a
heavier thread or yarn and the fabric is consequently more bulky and elastic.
We make no special claim to the parts marked E and F on the several Figures as
these parts are adjustable as varying circumstances may render necessary.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is :-
1. Discharging or knocking over the loops on Cotton's Patent frames of all gauges
with the knocking over bits herein described and shown in the annexed drawings.
2
4
Annlving breaking van hide such as bassin desnibed and shawn in the annexed!

page_text: drawings to Cotton's Patent frames or to any other Hosery frames built after the
principal of Cottons Patent Frames having sinkers moving horizontally and where
knocking-over bits, or blades, of a different shape or design are used for discharging
the loops.
3. The use of knocking over bits substantially as herein described and shown
on the accompanying drawings in knitting any kind of loop fabric.
Dated this 22nd day of October 1889
HENRY F. TALBUT,
7, Cherry Street, Birmingham, Agent for the Applicants.