Improvements in Rag and Waste Tearing Machines.
Year: 1895

page_text: Date of Application, 20th Sept., 1895
Complete Specification Left, 18th June, 1896-Accepted, 18th July, 1896
PROVISIONAL SPECIFICATION.
Improvements in Rag and Waste Tearing Machines.
I, THOMAS WALTER HARDING of the Tower Works, Leeds, in the County
of York, Engineer do hereby declare the nature of this invention to be as
follows:-
My invention consists in an improved method of constructing the pinned lags
used on rag and waste tearing machine swifts.
For this purpose I use wood lags as hitherto, and teeth of square section at the
root end. That part of the tooth which is to project over the face of the lag after
being suitably tapered, is flattened, so as to present its thinner edge in the working
direction, and by its flat shape to have greater power of resistance.
With this arrangement it is essential that the flattening of the tooth should be
always in the same relative position to the square, and that when the teeth are
driven into the lags they should be so placed that the planes of their flat sides are
parallel to each other.
For this purpose I provide the lags with round holes of suitable size through
which is passed a drift or punch to make the hole approximately of square section,
and so to guide the teeth when they are driven in so that the flat edges are all true
to the front.
The lags are fastened to the cylinder in any of the usual ways.
Combo 1805
Improvements in Rag and Waste Tearing Machines.
1, THOMAS WALTER HARDING of the Tower Works, Globe Road, Leeds in
the County of York, 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 invention consists in an improved method of constructing the pinned lags
used on rag and waste tearing machine swifts.
For this purpose I use wood lags as hitherto and teeth of square section at the
root end.
That part of the tooth that is to project over the face of the lag after being
suitably tapered is flattened so as to present its thinner edge in the working
direction, and by its flat shape to have greater power of resistance.
With this arrangement it is essential that the flattening of the teeth should be
always in the same relative position to the square, and that when the teeth are
driven into the lags they should be so placed that the planes of their flat sides are
parallel to each other.
For this purpose I provide the lags with round holes of suitable size through
which is passed a drift or punch to make the hole approximately of square section
and so to guide the teeth when they are driven in, that the flat edges are all true

page_text: The lags are fastened to the cylinders in any of the usual ways.
In the accompanying drawing Fig. 1 represents a longitudinal section of part of
a lag set with teeth as described. Fig. 2 represents a transverse section of the
same lag. Figs. 3, 4 & 5 represent plans of parts of the same lag.
In all these figures the lag is marked A and the teeth B B. In Fig. 4 I shew
the lag drilled with round holes C C ready for drifting out into approximately
square holes as shewn in Fig. 5 at D D. In Figures 1. 2. and 3 I shew the lag
with the teeth filled in. The teeth described may be made by any of the known
methods of hand or machine forging, or they may be made by grinding round wires
taper at one end, and then pressing or stamping the root end into a square form
and flattening the tapered portion between dies. The round boles may be drilled
in the lag by an ordinary lag drilling machine working by hand, or preferably by
an automatic machine such as is described in my Patent Specification No. 16.819
.A.D. 1890.
The round holes may be drifted into their approximately square shape either
by a hand drift or by fixing a drift to the non-rotating spindle of an ordinary
lag drilling machine, or preferably by the automatic punching machine described
in'my Patent Specification No. 16819 A.D. 1890.
The drift used may be of any suitable description.
The teeth may be filled and driven into the lag by any of the known methods,
care being taken to place the teeth so that their thinner edges are all presented to
the working direction of the lag.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
:-
1. Teeth for use in the coverings of rag and waste tearing machine swifts having
their working portions of flat section and their root ends of square section
substantially as described and shewn.
2. Wood lags for use in the coverings of rag and waste tearing machine swifts
set with teeth having their working portions of flat section and their root ends of
square section and presenting their thinner edges to the working direction of the
swift substantially as described and shewn.
Dated this 17th day of June 1896.