IMPROVED STEEL PINNED LAGGING FOR JUTE, TOW AND OTHER CARDS
Year: 1884

page_text: I, THOMAS WALTER HARDING, engineer and Card and Pin manufacturer, of the
Tower Works in Leeds in the County of York do hereby declare the nature of my
said invention for IMPROVED STEEL PINNED LAGGING FOR JUTE, TOW AND OTHER
CARDS, to be as follows:-
The card lags hitherto used for Jute & Tow carding consist of segments fitted
with round steel pins having a ground tapered point. In some cases, mostly for
worker rollers, there have also been used pins of "sectoral" or triangular form on
which a rude point has been formed by cutting the wire obliquely. My invention
consists in using flat pins, made by flattening between dies while in the soft state,
the round pins with ground point, which are then hardened and finished in the
usual way. The holes in the lags are made to suit the shape of the flat pins by
drilling two holes and punching out the intervening space, so as to produce a flat
or oblong hole.
By this means I obtain card lage with very fine points combined with great
strength.
Thus instead of the old N° 10 gauge round pin, I use a flattened pin of fully
equal strength but having the fine point and front section of a No 16 più.
Especially is this result of importance in Jute carding, where the object of the
process is in great part to hackle or split the fibre, as well as to get it into a sliver
form.
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I, THOMAS WALTER HARDING, of the Tower Works Leeds, in the. County of
York, Engineer and Card and Pin Manufacturer, do hereby declare the nature of
my said invention for "IMPROVED STEEL PINNED LAGGING FOR JUTE, TOW AND
OTHER CARDS" and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
The card lags hitherto used for Jute and Tow carding consist of segments fitted
with round steel pins having a ground tapered point.
In some cases, mostly for "worker rollers" there have also been used pins of
sectoral or triangular form on which a rude point has been formed by cutting the
wire obliquely.
Now my Invention consists in using flat pins, made by flattening between dies
while in a soft state, the round pins with ground points, which are then hardened
and finished in the usual way.
The holes in the lags are made to suit the shape of the flat pins by drilling
two holes and punching out the intervening space so as to produce a flat or
oblong hole.
By this means I obtain card lags with very fine points combined with great
.strength.
Thus, instead of the old N° 10 gauge, round pins, I use a flattened pin of fully
equal strength, but having the pins, point and front section of a N° -16 pin.
Especially is this result of importance in "Jute carding" where the object of the
process is in great part to hackle or split the fibre, as well as to get it into a sliver
form.
In the accompanying drawings, Fig. 1. is a plan view of my improved steel
pinned lagging, Fig. 2, an end elevation of Fig. 1. partly in section, and Fig. 3. a
longitudinal section on the line A. B. Fig. 1. the wood lagging a being in section
showing the pins b, therein.
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
The use for carding Jute, Tow, and similar substances, of lagging provided with
flat pins formed and arranged as described with reference to and shewn in the
drawings.
Dated this 5th day of November 1884.
Witness,
THOMAS WALTER HARDING.
W. Lloyd Wiso,
THOS E. CRAVEN, C.E., Fel. Inst. Patent Agents,
24, Victoria Chambers, Leeds.
Per F. J. Brougham,
Applicant's Agent.