Improvements in Straight Bar Rotary Rib Knitting Frames.
Year: 1892

page_text: Date of Application, 13th Feb., 1892
Complete Specification Left. 8th Nov., 1892-Accepted, 10th Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in Straight Bar Rotary Rib Knitting Frames.
We, SAMUEL DAVIS, of Hinckley, Leicester, in the County of Leicester,
Hoisery Manufacturer, FRANK MOORE, of Stoneygate Leicester in the County
of Leicester Hoisery Manufacturer, and JAMES PALMER, of Hamilton Street,
Leicester in the County of Leicester, Mechanic, do hereby declare the nature of
this invention to be as follows:- -
This invention relates to straight bar rotary rib knitting frames and has for its
object to improve the same to enable a tuck fabric to be produced thereby.
According to our invention we adapt a tuck presser or tuck pressers, such as is
ordinarily used in hand frames, to a frame worked by steam power and thus enable
the said frame to produce tuck fabric.
and
The said tuck presser or pressers is or are placed on the ordinary presser,
ordinary wheel and lever mechanism is provided at the end of the pressers to
make various patterns. The tuck pressers are actuated by the same means as the
ordinary presser.
Dated this 13th day of February 1892.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Straight Bar Rotary Rib Knitting Frames.
We, SAMUEL DAVIS, of Hinckley, in the County of Leicestershire, Hosiery
Manufacturer, FRANK MOORE, of Stoneygate, Leicester, in the County of
Leicestershire, Hosiery Manufacturer, and JAMES PALMER, of Hamilton Street
Leicester aforesaid, Mechanic, 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 straight bar rotary rib knitting frames, and has for
its object to enable tuck-fabric to be produced by such machines.
The chief feature of our invention relates to the provision of a tuck-presser
or tuck-pressers for the machine-needles or frame-needles or both, in combination
with suitable mechanism for controlling the same to vary the pattern of the
fabric.
In order that our invention may be better understood we will now proceed to
describe the same with reference to the accompanying drawings.
Figure 1 is a plan of a portion of one end of an ordinary machine-needle presser
having our improvement applied thereto, and showing the mechanism at the end of
the machine for operating and controlling the tuck-presser and bluff-plate herein-
after described.
Figure 2 is a front elevation of the parts shown in Figure 1.
Figure 3 is a section taken on the line x, x Figure 1.
Figures 4, 5, and 6 are plan views respectively of portions of the bluff-plate,
the tuck-presser, and the ordinary presser shown separately.
Like letters of reference indicate corresponding parts throughout the drawings.
A is the ordinary machine-needle presser; A is the presser arm; B is the
tuck-presser mounted on the ordinary presser A ; C is a plate hereinafter termed
a "bluff-plate" for masking the slits in the tuck-presser when it is required to knit

page_text: an ordinary course. a, a are bolts secured in the presser A for retaining the tuck-
presser and bluff-plate in position thereon.
The said bolts pass through longitudinal slots b, b formed in the tuck-presser
which allow the said presser to have a certain amount of free movement in the
direction of its length. The bluff-plate C is also formed with slots cc one part of
cach of which is formed at an angle with the edge of the plate for a purpose
hereinafter described. The tuck-presser is constructed with a series of slits a³, a¹
in the edge thereof for the purpose of avoiding the beards of those needles that it
is not desired to press.
In the example shown in the drawing, the slits are so spaced that every alternate
needle only will be pressed each time the presser is operated, the intermediate
needles which come opposite the slits being unpressed. For this reason, this
particular pattern of tuck-presser is known as a "one and one" tuck-presser. It
is obvious that by suitably designing the width of the spaces or slits and the
distances between said slits, a "two and one or "three and one or any other
pattern of tuck-presser may be produced. The edge of the tuck-presser projects
beyond that of the ordinary presser so that the latter does not come into contact
with the beards of the needles, it has in fact no function to perform other than that
of carrying and operating the tuck-presser.
"
"
When the tuck-presser is moved or shogged laterally so as to change its position
with respect to the machine-needles, a different set of needles will be pressed. For
instance in the present example of a "one and one" tuck-presser, if the presser is
shogged sideways .the extent of one needle, those needles that were previously
pressed will now be opposite the slits and therefore will not be pressed, and those
that were not previously pressed will now be pressed. The loops that are collected
on those needles that remain unpressed and which form the tuck stitches are
discharged when the tuck presser is shogged so as to be in a position to press those
needles during the next movement of the presser or the discharge may be effected
by the plate
as follows. That is to say, if the said plate C be shogged laterally
the inclined parts of the slots c, c cause the said plate to move parallel to itself
until its edge is flush with the edge of the tuck-presser B, or in other words until
the whole of the slits in the tuck-presser are masked. Upon the next movement
of the presser therefore the whole of the needles will be pressed and any loops
collected thereon will be discharged thus producing an ordinary course of knitting;
The extent of movement of the plate C is controlled by adjustable screws c', c'
carried by the presser arm, and between which projects a small bracket c³ fixed on
the said plate C. Springs c³ each of which is connected at one end to the ordinary
presser and at the other end to the bluff-plate are provided for drawing back the
said plate to its initial position when it is released after having been shogged as
above described to produce an ordinary course. Similar springs a² are arranged
for drawing back the tuck-presser after each shogging movement.
For shogging the tuck-presser and bluff-plate at the proper times we provide
cams D, D which act respectively on fingers E, E', in which are mounted
adjustable screws F, F. The head of the screw F1 bears against a projection c
of the bluff-plate, and the head of the screw F bears against the end of the tuck-
presser which projects a little beyond the end of the bluff-plate. The said heads.
are thus able to act upon their respective plates without interfering with each other.
The fingers E, E' are supported with a capability of sliding in a guide box G
carried by the frame of the-machine. The cams D, D' are carried by a bracket H
secured to the frame of the machine and are frictionally connected with a ratchet
wheel I. The pressure between the ratchet wheel and the cams is regulated by
adjusting nuts K and a spring plate K¹ placed between said nuts and the cam D.
The driving pawl L for actuating the ratchet wheel is pivoted on a lever L' which
is centered at one end at L' on a bracket L' carried by the frame of the machine,
and is supported at its other end on an adjustable screw L' carried by a bracket L
which is secured to and actuated by the machine arm O. By this means the
cams D. D¹are rotated intermittently. The cam D' is shaped to shog the blutt

page_text: plate C when desired to produce an ordinary course, and the cam D is suitably
shaped to vary the pattern of the tuck fabric as desired in a manner that will be
well understood. The cams D, D' can be readily replaced by other cams to vary
the pattern to be produced, as also for the same purpose can the tuck-presser be
replaced by another presser of a different pattern. If no plain courses are desired
the bluff-plate can be put out of action by simply screwing inwards the adjustable
screw F. It is thus obvious that any variety of pattern of tuck-fabric, with or
without plain courses, can be produced by our improvements, and also the pattern
to be knitted can be changed in a very short time.
We have only described our improvements as applied to the machine-needles,
but it is obvious that we may also apply them to the frame needles. For this
purpose we mount a tuck-presser and a bluff-plate similar to those above described
on the presser stays between the sinkers, and we actuate them in precisely the
same manner as above described with reference to the machine-needle tuck-presser
and bluff-plate.
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. The combination, with a straight bar rotary rib knitting frame, of a tuck-
presser for the machine needles, or the frame-needles, or both, for the purpose
specified.
2. The combination with a straight bar rotary rib knitting frame, of a tuck-
presser for the machine needles, or the frame-needles, or both, each provided with
a bluff plate, substantially as described, for the purpose specified.
3. The mode of mounting and controlling or actuating the tuck-presser to vary
the pattern of the tuck-fabric, substantially as described.
4. The mode of mounting and controlling or actuating the bluff-plate to produce
ordinary courses when desired, substantially as described.
5. The means for shogging the tuck-presser and bluff-plate, substantially as
described, for the purpose specified.
6. A straight bar rotary rib knitting frame provided with a tuck-presser and
bluff-plate constructed substantially as described with reference to the drawings
and operating as specified.
1 1
1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicants.