Improvements in Knitting Machines.
Year: 1892

page_text: Date of Application, 7th Mar., 1892
Complete Specification Left, 6th Dec., 1892-Accepted, 7th Jan., 1893
PROVISIONAL SPECIFICATION.
Improvements in Knitting Machines.
I WILLIAM HENRY DORMAN, of The Hawthorns, Newport Road, Stafford, in
the County of Stafford, Engineer, do hereby declare the nature of this invention to
be as follows:-
My improvements consist in the application of ball or roller bearings to certain
revolving or moving parts of knitting machines.
I apply such balls or, rollers to the cam shell, gear ring, dial pin, or other
bearings of circular knitting machines and to the sliding parts of flat knitting
machines for the purpose of reducing the amount of frictional resistance to the
movement or operation of the machine.
1 1000
W. H. DORMAN.
COMPLETE SPECIFICATION.
Improvements in Knitting Machines.
I WILLIAM HENRY DORMAN of The Hawthorns, Newport Road, Stafford, in
the County of Stafford 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:―
My improvements consist in the application of ball or roller bearings to certain
revolving or moving parts of knitting machines.
I apply such balls or rollers to the cam shell, gear ring, dial pin or other
bearings of circular knitting machines and to the sliding parts of flat knitting
machines for the purpose of reducing the amount of frictional resistance to the
movement or operation of the machine.
The accompanying drawings illustrate my invention.
Fig. 1 is a vertical section through the centre of a circular knitting machine
with my improvements applied.
Fig. 2 is a section of the gear ring &c. shewing a modification.
Figs. 3 and 4 are a side and end elevation respectively of a flat knitting machine
shewing my improvements.
Fig. 5 shews a modification.
Figs. 6, 7, 8 and 9 shew the balls and rollers with their frames removed from
the machine."
A. (Figs. 1 and 2) is the bed, B the gear ring, C the cylinder, D the cam shell,
E the dial, F the dial pin, G the dial carrying arm, H the bevel gear and I the
handle of a circular knitting machine.
In the bed AI turn a rectangular groove J Fig. 1 circular in plan in which I
place a number of balls K of a size to nearly fit the groove J sidewise and stand
a little above the surface L of the bed A of the machine.
These balls K form a ring in the circular groove and support the cam shell D;
rolling beneath it as it revolves during the operation of the machine.
Further out or nearer the edge of the bed A I turn another similar groove J¹
in which I place other balls K₁ to support in the same manner the gear ring B.
During the operation of the machine the dial E and the dial pin Fremain
stationary while the arm G carried round by the machine revolves upon the dial
pin F and also carries round with itself the cam cap M which operates the dial or
ribbing needles. To lessen the frictional resistance of the arm G and cam cap M
Pain Q71

page_text: turning on the pin F I insert rings of balls K and K³ which exactly fill the space N
purposely made for them between the pin F and bores O and P of the arm G and
cam cap M respectively. Between each alternate ring of balls insert a washer Q
and keep all in place by means of cap' washers R and R¹.
The shaft S which connects the operating handle to the bevel gear HI treat
in a similar manner mounting it in a bearing T bored sufficiently large to receive
the rings of balls K which are as before kept apart by washers Q and held in
place by a cap washer R² secured to the bearing T by the screw's U.
In the modification shewn in Fig. 2 the grooves L², J' are cut in the cam shell D
and in the gear ring B as well as in the bed A. While still remaining circular in
plan and receiving rings of balls K K as before, the grooves are cut of a vee shape
so that the balls in rolling round the circle and supporting the gear ring B and
cam shell D respectively bear upon the sides of the vee grooves and so prevent side
movement of the cam shell and gear ring.
The usual cover pieces V and V₁ prevent the gear ring B from rising out of
its place.
In applying my invention to flat knitters I mount the balls or rollers in frames
which travel with them and maintain them in proper position.
In Figs. 3 and 4 a is the body or bed of the machine and the cam carriage
which is caused to slide from end to end of the bed a by means of the handle c
provided in a suitable position for the hand of the operator.
The rollers d are free to revolve in the frames e being carried therein in bearings f. f.
formed in the side bars g, the bars being kept at a proper distance apart by means
of the stays h. The frames e together with the rollers d are placed in the roller
ways and the cam carriage is mounted thereon so as to be supported on the
rollers d which roll to and fro beneath it as the carriage is pushed from end to
end of the ways i from the position as shewn in full lines to the position j¹ as
shewn in dotted lines. The covers prevent the cam carriage from rising out
of its place.
If desired, balls d' (see Figs. 5, 8 and 9) may be used instead of the rollers d,
vee grooves being prepared for them in the roller way and the cam carriage b';
the balls being kept in place in the side bars g' by mounting them on pins .
Stays maintain the bars g' in their proper positions. By this arrangement the
balls prevent side movement of the cam carriage b'.
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 knitting machine the use of roller or ball bearings for the purpose of
reducing the amount of frictional resistance to the movement or operation of the
machine as described.
2. In' a circular knitting machine the use of ball bearings for the purpose of
reducing the amount of frictional resistance to the movement or operation of the
machine substantially, as described and illustrated in Figs. 1 and 2.
3. In a flat knitting machine the use of ball or roller bearings for the purpose
of reducing the amount of frictional resistance to the movement or operation of the
machine substantially as described and illustrated in Figs. 3 to 9.
Dated this 5th day of December 1892.