Improvements in Fasteners for Securing Card Clothing to Bars of Flats.
Year: 1892

page_text: Date of Application, 2nd Aug., 1892
Complete Specification Left, 27th Dec., 1892-Accepted, 28th Jan., 1893
PROVISIONAL SPECIFICATION.
Improvements in Fasteners for Securing Card Clothing to Bars of
Flats.
I, JOSEPH DEISS, Card Maker of Ranspach, Wesserling, Alsace Germany, do
hereby declare the nature of this invention to be as follows:-
:-
This invention relates to an improved clamp fastener for fastening the card
foundation fabric to the flats of flat carding engines.
According to this invention each strip of metal from which a clamp fastener is
to be made is punched or stamped so as to form a series of small pins or prongs
protruding from and at intervals of distance along one edge of said strip-the pins
or prongs being of such length that when forced through the card foundation
fabric, their points coming in contact with the iron flat, will by the pressure be riveted
or clenched thereby absolutely securing one edge of the fastener to the foundation
fabric as distinguished from metal clamps having serrated edges, not any form of
the latter in use to this day being absolutely reliable.
Dated this 20th der of 1.1 1900
WALTER BRIERLEY,
Penny Bank Chambers, Waterhouse Street, Halifax,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Fasteners for Securing Card Clothing to Bars of
Flats.
I, JOSEPH DEISS, Card Maker of Ranspach, Wesserling, Alsace, Germany, 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 an improved clamp fastener for fastening the card
foundation fabric to the flats of flat carding engines.
According to this invention each strip of metal from which a clamp fastener is
to be made is punched or stamped so as to form a series of small pins or prongs
protruding from and at intervals of distance along one edge of said strip, the pins
or prongs being of such length that when forced through the card foundation
fabric, their points coming in contact with the iron flat, will by the pressure be
riveted or clenched thereby absolutely securing one edge of the fastener to the
foundation fabric as distinguished from metal clamps having serrated edges not
any form of the latter in use to this day being absolutely reliable.
Such being the nature and object of my said invention the following is a
complete description of same reference being had to the accompanying drawings in
which:-
Fig. 1 shews part of a strip of metal from which a clamp fastener is to be
made according to my invention drawn about twice full size.
Fig. 2 is an end view of Fig. 1.
Fig. 3 is an end view of the clamp bent to the position as when applied to the
foundation fabric and flat.
Fig. 4 is a cross section of flat and card clothing secured thereto by the
improved clamp fastener.
Fig. 5 is an enlarged view of part of Fig. 4.

page_text: Fig. 6 shews part of the metal strip made according to my invention and about
actual size employed.
Fig. 7, 8, 9, 10 and 11 are views of foundation fabric and the old serrated metal
strips hereinafter referred to.
1 is the strip of soft steel as ordinary used from which to make a clamp fastener,
the strip has on one edge and at intervals of its length small protruding pins or
prongs 2 of such length that when forced through the card foundation fabric 3
their points coming in contact with the iron flat 4 will by the pressure exerted by
the usual machines for fitting the clamp in its position on the bar rivet, clench or
turn up the points of the said pins or prongs 2 in the form of fish hooks in the
foundation fabric (see Figs. 3, 4 and 5) thereby absolutely securing one edge of
the fastener to the foundation fabric 3 the other edge being secured as ordinary
by bending and folding it under the bar as at 5.
Fig. 8 shews a fine serrated edge of a clamp fastener as heretofore made and
used and, Fig. 9 is a plan view of foundation fabric in which are shewn holes
punctured by the passage of the serrated teeth 6, 6, 6 which when forced through
the foundation fabric 3 severely lacerate and weaken the latter and such defect
cannot be obviated by any change of pitch in the spaces between the serrations or
teeth 6. 6.
Example of wider pitch or coarser serrations is given at Fig. 10 and of the
holes made by such teeth in the foundation fabric 3 at Fig. 11. If the pitch of
the teeth 6. 6 be fine then the number of punctures greater whereas if the pitch
or spaces between the teeth be increased then the punctures are fewer in number
but they are proportionately longer as shewn by Fig. 11, so that the damage to
the foundation fabric 3 cannot be avoided by variation of pitch of the serrations.
On the other hand if the serrations are not forced through the foundation
fabric 3 but only partially into the foundation fabric then the fastener is not
securely attached to the foundation fabric.
In the improved spaced pin edge fastener no practical injury is done to the
foundation fabric 3 by punctures (see Fig. 7) and the fastener is absolutely secured
to the foundation.
I would have it understood that I do not limit the invention to the exact form
or shape of the protruding pins or prongs 2 so long as it is provided that the latter
are constructed when pressure is applied, to pass through the foundation fabric and
their points turn up hookwise in the fabric and also that said pins or prongs are
separated from each other by spaces or intervals of the metal strip thereby to
avoid damage and injury to the foundation fabric as example Fig. 7.
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 :-
The improved metal strip fastener constructed as shewn by Figs. 1 to 6 inclusive
and herein fully described."
Dated this 24th dox of December 180D