An Improvement in Card Flats.
Year: 1896

page_text: Date of Application, 24th Nov., 1896
PROVISIONAL SPECIFICATION.
An Improvement in Card Flats.
I, OLIVER IMRAY, of No. 28 Southampton Buildings, Chancery Lane, in the
County of London, Chartered Patent Agent, do hereby declare the nature of this
invention (which has been communicated to me from abroad by Jasper Arrowsmith,
at present of The Terminus Hotel, Gare Maritime, Calais, France) to be as
follows:-
This invention relates to card flats and has for its object cheap and effective
means of fastening the foundation of the cards on the bars. For this purpose a
strip of metal having one of its margins notched or cut so as to present a number
of spikes, is bent to the form of an inverted the short limb of which has the
spikes, and then these spikes are bent so as to stand up from the short limb
parallel to the long limb. Two such strips being thus prepared, the two margins
of the card foundation are penetrated by the spikes which are then bent over so as
to clinch the foundation and hold it firmly on the short limbs of the L strips.
The long limbs are then strained somewhat apart by any convenient means so as
to stretch the foundation and then the bar being introduced between those limbs
they are bent under the flanges of the bar thus holding the stretched foundation
firmly on the bar.
In order to cover the margins of the foundation where the clinched spikes
appear, a clamp consisting of a bent strip of metal is fixed on each side, the upper
limb of each clamp covering the margin of the foundation, and its lower limb
extending under the flange of the bar.
Dated this 24th day of November 1896
ABEL & IMRAY,
Agents for the Applicant.
I, OLIVER IMRAY, of No. 28 Southampton Buildings, Chancery Lane, in the
County of London Chartered Patent Agent, 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 card flats and has for its object cheap and effective
means of fastening the foundation of the cards on the bars, as I shall describe
referring to the accompanying drawings.
Figure 1 is a transverse section and Figure 2 is a part plan of a flat having its
card fixed to the bar according to this invention.

page_text: Figure 3 is a section and Figure 4 is a part plan of the inner fixing strip in its
first form; Figure 5 is a section, Figure 6 is a. part side view, and Figure 7 a part
plan of the strip in its next form; Figure 8 is a part side view and Figure 9 is a
perspective view of the strip in its final.form; and Figure 10 is a transverse section
of one side of the flat. Figures 3 to 10 inclusive are drawn on an enlarged scale.
A strip of metal A is bent with part B doubled as shewn in Figs. 3 and 4 and
the doubled part is cut by equidistant oblique slits C. The pointed angles thus
formed are bent up at right angles so as to form sharp spikes D as shewn in
Figures 5, 6; and 7. The margin of the card foundation F, while it is stretched is
engaged on these sharp spikes D which penetrate the foundation and are then bent
over or clinched as shewn at E,. Figures 8, 9. and 10, so as to take a firm hold of
the foundation. The strips A thus holding the edges of the foundation then have
their lower parts bent under the margin of the bar G as shewn at H Figure 10
and finally a strip is bent to U shape forming an external clamp K which covers
the margins of the foundation. and. the clinched. ends E of the spikes and encloses
all parts of the fixing strip A.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
A card flat having the card foundation secured on the bar by means of a fixing
strip having integral with it spikes which penetrate and are clinched over the
margin of the foundation the whole of the fixing strip and the margin of the
foundation being enclosed in a clamping strip, substantially as described.
Dated this 17th day of August 1897.
ABEL & IMRAY,
Agents for the Applicant.