Improvements in Circular Knitting Machines.
Year: 1892

page_text: Date of Application, 4th Apr., 1892
Complete Specification Left, 3rd Jan., 1893-Accepted, 25th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in Circular Knitting Machines.
ARTHUR CHAPMAN, Vulcan Iron Works, Spencer Street, Rhodeswell Road,
Limehouse E. in the County of Middlesex Engineer do hereby declare the nature
of this invention to be as follows:-
Improved welting cam cap with improved welting cam and method of working
same improved moveable post for adjusting the relative positions of needle cylinder
and dial.
The improved cam cap is provided with an aperture (or slot) through which the
cam is operated, and 2 stops or catches, and a pin or screw forming the fulcrum of
a lever on the top side, on the under side a V groove is formed of suitable depth and
length, the improved welting (or outthrow) cam is formed of suitable shape and
provided with a projection for fitting in the V groove aforesaid. A slide is provided
fitting the aperture in the cap and to this the cam is secured on the underside of
the cap.
A lever having a slotted hole for its fulcrum and having its outer end
formed as a latch, is provided, and engaged to the slide aforesaid, a spring is
provided, and so fixed as to always press the lever outward from its fulcrum, by
means of the slotted hole, any movement of the lever moves the cam, and at the two
positions of half out (or about), and fully out, it is held firmly fixed by the latch
point of the lever engaging upon the catches, and being held there by the spring.
In making the welt the usual rows are first knitted, then the cam is moved inwards
to half way (or about), and one course is knitted then the cam is moved completely
in, and the welt completed in the usual way.
The advantages of these welting cam caps are:-
Increased firmness, and accuracy in working, a better welt is made, and the
needles are protected throughout the whole operation, and breaking, and jambing
avoided, and equal facility of application to all sizes of machines.
2nd. The improved moveable post for adjusting the relative positions of cylinder
and dial is made of the "bell crank" form, and pivoted in like manner to a bell
crank, but having one end formed to engage with the dial, the other end having a
radial slot working upon a stud, and secured by a nut, the lever being extended
beyond the frame of the machine, forming a handle and an indicator showing the
position of the post. The advantages of this are increased firmness, and rigidity of
the post, and increased facility of adjustment.
The stitch cam of the welting cani cap is made, adjusted, and indicated in the
usual manner.
3rd. The combination of the above, or any of them with any circular knitting
machine.
3000
ARTHUR CHAPMAN.
COMPLETE SPECIFICATION.
Improvements in Circular Knitting Machines.
ARTHUR CHAPMAN, Vulcan Iron Works, Spencer Street, Rhodeswell Road,
Limehouse, E. in the County of Middlesex, Engineer 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:-
The first part of my invention consists of an improved welting cam cap shewn by
Figs. 1 1 1 2 and 3 of the accompanying drawing, Fig. 1 being a view of the

page_text: under side of the cap; A being the outthrow or welting cam, B the slot in cap
through which the cam A is operated; C a V groove into which a like projection
on the cam A engages when it is in the outward position, but when in the inward
position is free in slot B, Figs. 14 and 1B shew cross sections of this arrangement,
Figs. 2 and 3 are views of the upper side of my welting cam cap, in Fig. 2,. D is
the lever which operates the welting cam by its connection with it through the
slot B such connection being a block and link as shewn in Fig. 1B, and E. E. E. are
the stops or catches which hold the lever D in its various positions, with this
arrangement the usual rows are first knitted, then the welting cam is moved by the
lever D inwards to the half way position, and one row is knitted, then the cam A
is moved by the lever D to the inner position, and the welt completed in the usual
way by knitting one or two rows with the cam A at its inner position. Fig. 3
shews another form of lever D and different positions of stops or catches E. E. E.
which I also use.
The advantages of these improvements
are increased firmness and accuracy in
working a better welt is made, the operation of tucking is facilitated, and the
needles are protected throughout the whole operation.
Another part of my invention is an improved moveable post for adjusting the
relative horizontal positions of cylinder and dial in circular knitting machines.
Fig. 4 is a plan and Fig. 5 an elevation of this new moveable post, it is made in the
form of a bell crank lever, being pivoted upon the frame of the machine at its
centre, the upper end engaging against the dial, and the horizontal member of the
lever extending beyond the frame of the machine, and being held in position by
stud & wing nut (F. Fig. 6) on which it moves at the radial slot, the extension
beyond the machine forms a handle, and an indicator of its position. Fig. 6 is a
partial view of a machine shewing this moveable post in position on the machine.
The advantages of this improved moveable post are increased rigidity, and
convenience of adjustment.
a
The stitch (or outer) cam of the welting cam cap, is made, adjusted and indicated
in the usual manner.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed I declare that what
I claim is
1. In a welting cam cap for a circular knitting machine, the improved outthrow
cam, formed, guided, and operated substantially as shewn and described.
2. In a welting cam cap the lever for operating the welting cam, formed and
operated substantially as shewn and described.
3. In a welting cam cap, the arrangement of stops or catches, holding the lever
in various positions as described.
4. In a circular knitting machine, the moveable post of bell crank form, pivoted,
held, and extended for indication substantially as shewn and described.
5. The combination of the above or any of them with a circular knitting
machine.
Dated this 3rd day of January 1893.
AR. CHAPMAN.