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Патент USA US2132693

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Oct. 11, 1938.
I
E. G. MARTIN ET AL
‘2,132,693
METHOD OF MAKING PAPER FASTENERS
Filgd June 22, 1957
/
INVENTOR?
BY
E. G. MARTI N
E. a. $TAR><
ATTORNEY.’
2,132,693
? Patented Oct. 11, 1938
UNITED STATES PATENT OFFIQ'E
2,132,693
METHOD OF MAKING PAPER FASTENERS
Edward G.
Martin, Portland, 0reg., and‘ Eugene
E. Stark, Olympia, Wash.
Application June 22, 1937, Serial No. 149,674
1 Claim.
This invention relates generally to the sta
tioner’s art and particularly to paper fasteners.
The main object having been mentioned is a
provision of an exceedingly simple and e?icient
‘5 form of paper fastener.
'
The second object is to construct a paper fas
would be a lesser degree.
papers may be added to the front or back thereof
uniting fasteners.
The further‘ object is to construct a fastener
of the type described which will lend itself to
them is of course, to facilitate their use in an
machine application.
I
These and other objects will become more ap
parent from the speci?cation following as illus
trated in the accompanying drawing in which: ‘ ‘
Fig. 1 is a perspective view of a single fastener.
Fig. 2 is a plan showing a number of the fas
teners joined.
'
Fig. 3 is a fragmentary section through a num
ber of papers showing the fastener being inserted
therein.
Fig. 4 is a view similar to Fig. 3 showing one
end of the fastener bent over to form a head.
Fig. 5 is similar to Fig. 4 but it shows both
25
ends bent to form heads.
Fig. 6 is a perspective view of the fastener
' showing one end thereof bent up for the ordinary
T shaped fastener for manual insertion.
Fig, '7 is a fragmentary view showing a modi?ed
form of point.
Similar numerals refer to similar parts in the
several views.
The purpose - of so uniting
applicator or fastener applying machine.
It will be noted in Fig. 3 that the prongs l0
have been inserted into the opening I3 in the
papers 14.
15
In Fig. 4 the ends l5 have been bent over to
form a head on one side of the papers l4 and'in
Fig. 5 the ends l6 have been bent over to form
a head which would be opposite the one formed
by the ends l5.
.
.
20
It can be seen from the drawing, that addi
tional papers l4 can be added to or removed from
either side of the ?le without removing any of
the papers from the prongs Hi,
In the production of this fastener, it is desir
25
able to assemble two sheets of metal in the man
ner showniin Fig. 2 and to unite them along an
intermediate line by means of a continuous spot
weld IZA afterward shearing into separate fas
teners leaving the ends of the welded portion
smooth as a result thereof.
In some cases it may
provement over the strip type of fasteners in
be found desirable to form the points I I after
the welding is performed. In such cases only the
projecting end of each fastener is pointed, the
35
other remaining blunt as shown in Fig. 7.
Obviously, the shape of the poins II as well as
which a separate- head is provided, or in which
the means for uniting the prongs I!) may be
Before entering into the description of this in
35 vention, it must be understood that it is an im
the entire fastener is constructed from onepiece,
varied greatly without departing from the spirit
in that as our construction enables the user to
of this invention.
40 apply the papers to either end of the fastener
instead of to one end only, as was heretofore
4
In the drawing, the portion I 2 isshown as
being offset which would be the case if the mate
rial was spot welded although naturally, this 5
without removing the papers originally joined.
be fastened together into book form andother
30
ated the separation between the prongs H] which
normally lie in close contact with each other.
In the form of the device in Fig. 2, the parts
of fasteners II] are united into the form of a strip
by any of the well known means for temporarily
tener by means of which a number of papers may
20
(01. 29-13)
necessary. Referring in detail to the drawing,
there is shown a pair of prongs l0 having points
II at each end thereof. The points H are offset
as indicated as a common provision to facilitate
a separation thereof.
The prongs I0 are united at an intermediate
point l2 by means of spot welding or in any
5 O other convenient manner.
In the illustration, we have somewhat exagger
.
We claim:
A method of making paper‘ fasteners consist
ing of serrating the opposite edges of a pair of
sheets of metal, then imposing one of said sheets
upon the other in a manner that the serrations
are in transverse alinement but offset from each
other, then welding said sheets together along a
line between and parallel with said points and
then severing said joined sheets between the ser
rations.
EDWARD G. MARTIN.
EUGENE E. STARK.
40
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