Year: 1894

page_text: Date claimed for Patent under Sect. 103 of Act,;)
being date of first Foreign Application (in 14th Mar., 1894
United States of America),
1
Date of Application (in United Kingdom), 15th Oct., 1894
Complete Specification Left, 15th Oct., 1894-Accepted, 29th Dec., 1894
United States of America),
Date of Application (in United Kingdom), 15th Oct., 1894
Complete Specification Left, 15th Oct., 1894-Accepted, 29th Dec., 1894
I, RICHARD MONTGOMERY PANCOAST, of Camden, in the County of Camden,
and State of New Jersey, United States of America, Civil Engineer do hereby
declare the nature of this invention and in what manner the same is to 'bo
performed, to be particularly described and ascertained in and by the following
statements :-
The objects of this invention are to provide a very light, neat, unobtrusive
and inexpensive device for applying to the corners of a number of papers to attach
the sheets securely together by hand in the simplest manner, without the use of
any machine or other device to operate it, and without puncturing the papers.
I attain these objects by the simple construction illustrated in the accompanying
drawings, in which :-
Fig. 1 represents in outline an unformed blank, and the dotted lines the forming
or folding lines.
Fig. 2. represents the device with the side fins formed up for application to the
papers.
Fig. 3 represents it with the fins bent in on the paper.
Fig. 4 is a cross section of same on line 7-8.
Fig. 5 represents it fully applied.
Fig. 6 is a cross section of same on line 9-10.
Figs. 7, 8, 9, and 10, 11 and 12 show modifications in the construction of the
device.
Similar numerals refer to similar parts in all the figures.
It will be seen that the device is made up from unformed blanks whose upper
portion is practically rectangular, Figs. 1, 7, 8, 9, and 10, and whose lower portion
may be rectangular Fig. 1, triangular Fig. 7, oval Fig. 8, or other shapes at
pleasure as in Figs. 9, 10, 11, 12 &c.
The device in all cases consists of a triangular central back part 1 practically
right angular at the apex 5, and a lip 2 continuous of the hypothenuse or longer
side of said back plate 1, and two triangular fins 3, 3, continuous of the other two
sides of the said back plate.
.
The side fins 3, 3 need to be formed up true and sharp on the bending
lines 4-5, so as to facilitate their_beuding down flat by the fingers to the
accurate position 3, 3, Fig. 3, conforming to and completely enveloping the corners.
of the papers, and it is necessary to crease the metal or form a groove on the
folding line 4-4 to facilitate the proper folding over from position shown in
Figs. 3 and 4 to the position shown in Figs. 5 and 6.
To further facilitate the bending down true on these lines and prevent the
very lightest of sheet metal from bending between these lines and the outer cods,

page_text: it is advisable to corrugate the two fins 3, 3, and the lip 2 crosswise from the
folding lines as shown in Figs. 7 and 8. This corrugation makes the metal
several-fold (depending on the depth) stiffer laterally, and consequently materially
enhances the action of the device in facilitating the accurate folding over sharply
on the paper..
To provide for more or less thickness of the various amounts of paper to be
attached, it is advisable to make the width of the groove 4; 4, so that its upper
edge shall be ou line with the lower edge of the fins 3, 3, Figs. 3 and 4 when bent
down, and the corrugation of the lip 2 should radiate from the lower edge of said
groove to the end of the lip 2, as shown in Figs. 7 and 8.
These devices may be made from sheet metal with very little scrap or waste,
by one operation of the die, forming up the fins 3, 3, as shown in Fig. 2, sinking
the crease 4, 4, between the back plate 1 and the lip 2, and sinking in the radial
corrugation of the fins and the lip, and also any lettering on the back plate.
Formed up as shown in Fig. 2 the corners of paper are adjusted to the corner
of the device as shown. Then the side fins are pressed in upon the paper,
completely covering the whole edges occupied 4 to 5. The enveloped corner is
then folded down on line 4, 4, to position shown in Fig. 5, thus holding the paper
in shape by pinching the edges 4 to 5 and securely fastening the sheets together
by squeezing them with the lower edges of the fins into the crease, and biting
them between the juncture of the lip with the back plate as shown at 4 in Fig. 6.
This grip on the paper is on all the edges and on all the fold-over occupied, as is
not the case with any other device used; and therefore it will hold satisfactorily
with much lighter metal than is practicable for any other device for the purpose
and lightness is a desideratum in mailing &c.
While there is no special advantage in constructing the device as shown in
Figs. 11 & 12 so the apexes of the fins shall gap, yet it may be made in this way
without departing from our invention.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we do hereby declare
that what we claim is :-
1. A paper fastener consisting of a flat piece of flexible metal adapted to be
bent angularly inward at its respective upper corners upon and transversely of the
corners of assembled sheets of paper and then to be bent substantially centrally
down upon said paper, substantially as and for the purpose set forth.
2. A paper fastener consisting of a piece of flexible sheet metal having an
angular upper portion adapted to be bent inward and downward at.its respective
corners to form a pocket which encases the corners of assembled sheets of paper,
and to be horizontally bent over at its substantial ceuter to fold over and grip the
corners of said papers, substantially as aud for the purpose set forth.
3. A paper fastener consisting of a piece of flexible sheet metal having a
substantially right-angidar upper portion and a lower lip, said upper portion
having its corners bent inwardly to receive the corners of assembled sheets of
paper, and then bent or folded centrally to grip the papers, substantially as and
for the purpose set forth.
4. A paper fastener consisting of a substantially rectangular back plate, a
pair of triangular fins formed therefrom, and a lip forming a continuation of said
back plate, substantially as and for the purpose set forth..
5. A paper fastener consisting of a substantially rectangular plate, a pair of
triangular fins formed therefrom and bent centrally upon said plate to form a
pocket to receive the corners of assembled sheets of paper or analogous material
and a lip of substantially corresponding width to the width of said plate, said plate
and fins with the corners of the papers clasped thereby being bent or folded over
inwardly of the sheets, and thereby gripping the folded-over corners of said
sheets between said fins and also between the plate and lip, substantially as aud for 5
the purpose set forth.

page_text: 6. A paper fastener consisting of a piece of flexible sheet metal having a
substantially central horizontal crease, and at its upper portion augular creases,.
substantially as.and for the purpose set forth.
7. A paper fastener consisting of a piece of flexible metal having a horizontal
crease or fold dividing said piece into an upper, or rear plate, and a front or lower
lip of practically equal width at their connection and a pair of triangular fins.
formed by bending the corner of eaid plate inwardly upon said plate the inner
edges of said fins approximating the vertical center of said plate, and the lower
edges of said fins approximating to a line over the horizontal. crease, substantially
as and for the purpose set forth.
8. A paper fastener consisting of a flat piece of flexible metal horizontally-
creased about its centre, the corners of the metal at one side of said crease-
adapted to be bent angularly, said corners and the metal at the other side of the
crease being provided upon one surface with a series of corrugations, substantially
as and for the purpose set forth.
Di
F. W. BARKER,
Applicant's Agent.