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Патент USA US3086256

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April 23, 1963
G. R. STONE
3,086,246
METHOD 015 MAKING SLIDE FASTENERS
Filed March 3, 1961
2 Sheets-Sheet 1
INVENTOR.
GEORGE E. STONE
_
8W. 6%
A 770 ENE)’
April 23,1963
e. R. STONE
3,086,246
METHOD OF MAKING SLIDE FASTENERS
Filed March 3, 1961
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INVENTOR.
Ci EORG E R. STONE
Unitecl StatesPatent O ”
3,986,246
Patented Apr. 23, 1963‘
2
1 .
used for making a fastening device in accordance with
3,986,246
7
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'
METIIGD OF MAKING SLIDE FASTENERS
George R. Stone, Meadville, Pa, assignor to Talon, Inc-,
a corporation of Pennsylvania
Filed Mar. 3, 1961, Set.‘ No. 93,088
12 Claims. (Cl. 18-475),
the present invention,
FIG. 8 is a fragmentary plan view of a fastening device
made from the strip, as shown in FIG. 7, showing how
it may be attached to a stringer tape, and
FIG. 9 is a sectional view taken on line 9—-9 of FIG. 8.
Referring more particularly to the drawings, there
is shown in FIG. 1, the various steps performed on an
elongated or tubular member for forming a fastening de
of making slide fasteners.
Various types of plastic slide fasteners have been here 10 vice in accordance with the present invention. There is
shown in this ?gure for the purpose of illustration, an
tofore'suggested and used but it was not until recently
elongated
or continuous tubular member 2 substantially
that they have become most prominent in the commercial
oval
shape
in cross section, but it will be understood that it
trade, possibly due to the advent of new and better
may be an elongated member having a cross section such
plastics. Some of such fasteners are of the pro-formed
as shown in FIGS. 6 and 7 of the drawings and the same
?lament type. That is to say, the ?lament is formed so 15
steps are performed thereon as a tubular member which
' as to provide a continuous coiled ?lament or otherwise
will
presently be described. vIn such an elongated or tubu
deformed so as to provide interlocking scoop formations
This invention relates to a new and improved method
lar member, there is provided opposed spaced-apart side
therealong. The formed ?lament is attached to the edge
walls 3 and edge or end walls 4 and 5 so as to provide
usually
by
sewing
to‘
complete
the
"of a stringer tape
stringer. It is to such a preformed continuous coil type 20 a continuous circumferential wall. This elongated tubu
lar member is preferably made from nylon, perlon or any
of fastener that the present invention relates.
other suitable plastic material, including rubber.
In the practice of the present invention, the fastener is
The ?rst step in the practice of the present invention,
formed preferably from a continuous length plastic tubu
as shown in FIGS. 1 and 2, is the cutting of transversely
" lar member or from a strip of plastic material folded upon
extending slots 6 and 7 in the edge or end wall portions
itself so as to provide two plies. One edge of the tubular 25
4_ and 5 on either side of the tubular member 2. These
“member or folded material is slotted at spaced apart in
slots extend from the outer edges 4 and 5 to a point inter
tervals along one edge thereof with the material then
mediate
the width of the tubular member and the slots
spread by inserting a suitable wedge-like tool in the slots
on one side are staggered relative to the slots on the
' so as to provide a series of spaced apart scoop forming
opposite side. These slots are cut preferably, as illus
portions which are deformed so as to provide interlock 30 trated, by means of a pair of circular saws S with one
‘ ing means thereon. The opposite edge is also preferably
"similarly slotted at spaced apart intervals and the mate
f rial also spread at the slots so as to provide means for
attaching the formed tubular member or strip to the edge
arranged at each side of the tubular member but it will
be understood that any other suitable means may be em
ployed for cutting these slots.
The next step is to widen ‘or expand these slots 6 and
‘ of -a suitable stringer tape, preferably by stitching so as 35 7 on either side of the tubular so as to provide widened
to provide a slide fastener stringer. The stringers are then >
or expanded slots 6a and 7a, respectively. These slots ,
‘ cut to the desired length and interlocked with an opposed
may be widened or expanded by any suitable tools, such
companion stringer and a slider assembled thereon so as
as wedge-like reciprocating tools W. As a result of this
to provide a complete slide fastener in. a manner well
widening or expanding step it will be understood that
" known to those skilled in the art.
there is provided head portions 8 on one side of the tubular
It is an object of the invention to provide an improved
method of making a plastic slide fastener which is not
only simple and inexpensive in its fabrication and con
~ .struction, but at the same time, efficient and effective in
its use.
It is a further object of this invention to provide a
new method of making a plastic slide fastener which is
i strong and rugged and one which can be conveniently at
member and attaching portions 9 on the opposite side
thereof. Thus, it will be seen that as a result of this step
the length of the tubular is extended or expanded, and
45 that there is provided on one side thereof, a series of
spaced-apart head portions 8 and on the opposite side a
series of spaced-apart loop-like attaching portions 9 with
both the head portions and attaching portions being suc~
cessively interconnected by means of the diagonally dis
tached to the stringer tape.
Various other objects and advantages of this invention 50 posed portion 12.
In the next step, in the practice of the present inven
~' will be more‘apparent in the course of the following spec
tion, the head portions 8 are deformed or upset pref
i?cation, and will be particularly pointed out in the ap
erably by means of a tool D in cooperation with an op
pended claims.
posed wedge-like tool C so as to provide interlocking pro
In the accompanying drawings, there is shown for the
jections 13 on each of head portions on both the
purpose of illustration, an embodiment which my inven
upper and lower sides thereof. It will be understood that
tion may assume in practice.
these interlocking projections 13 are adapted to cooperate
In these drawings:
with and engage behind corresponding interlocking pro
FIG. 1 is an enlarged schematic view showing diagram
jections on the head portions of an opposed or companion
matically the tools for making a fastening device in ac
fastening device so as to interlock the same in a manner
cordance with the present invention,
well known to those skilled in the art.
FIG. 2' is a sectional view taken on line 2-—2 of FIG. 1;
After the tubular or elongated member has been formed
FIG. 3 is an enlarged fragmentary view of a slide
as above described they may be attached to a stringer
fastener made from stringers according to the invention.
tape T or any other ?exible carrier so as to provide a
FIG. 4 is a plan view of a completed slide fastener 65 completed slide fastener stringer. In the embodiment just
described the loop-like attaching portions 9 may be at
‘ showing a slider mounted thereon,
tached or stitched to the edge of a tape T by means of
_ FIG. 5 is a sectional view taken on line 5-—5 of FIG. 4;
threads or stitching 14, as shown in FIGS. 3 and 5 of the
"FIG. 6 is a cross sectional view of another embodiment
drawings, or they may be stitched to the side thereof.
of my invention showing a collapsed or flattened elon~
In FIG. 6 of the drawings there is shown a modi?ca
gated tubular member,
70
tion of the present invention, in which the elongated mem
FIG. 7 is a cross sectional view of still another em
ber from which the fastening device is formed from a col
bodiment showing an elongated folded strip which may be
4
3,086,246
lapsed tube 29 so as to provide a continuous circum
4
on one side being staggered relative to those on the op
ferential wall having substantially ?at superimposed side
posite side, each of said slots extending from the edge of
walls 2-1 and 22 and edge or end walls 23. Such an elon
gated member is formed into a fastening device in sub
said elongated member to a point intermediate the width
thereof, forcing a tool into each of said slots on each side
stantially the same manner as that described for the
of said member so as to Widen and expand the same so as
tubular member 2. Likewise, this type of fastening device
to provide a series of spaced-apart interlocking head por
may be attached to the edge of the tape in the same
tions on one side of said elongated member and a series
manner as that formed from the tubular member.
of similar spaced-apart attaching portions on the op
In FIGS. 7, 8 and 9 there is shown still another em
posite side thereof, and finally deforming the material of
bodiment of the invention in which the elongated mem 10 each of said head portions adjacent the end thereof so as
ber is shown as a sheet or strip of material 24- folded
to provide an interlocking portion on each of said head
portions.
upon itself so as to provide side walls 25 and 26 inter
connected by an edge or end wall 27. In this construction
4. The method of making a stringer for slide fasteners
the free edges may straddle the edge of the tape and sewn
of the class described which comprises providing an
thereto, as shown in FEGS. 8 and 9, or they may be dis
posed in superimposed relation and sewn as at 28 or other
wise suitably attached to one side of the tape at the edge
elongated member having a pair of opposed wall portions
interconnected at least along one edge thereof, forming
a series of spaced-apart transversely extending slots in the
thereof.
opposite sides of said elongated member, the slots on one
It Will be understood that after the stringers have been
side being staggered relative to those on the opposite side,
fabricated as previously described, two opposed stringers 20 each of said slots extending from the edge of said elon
of the desired length are interlocked substantially as shown
in FIG. 3, and a slider and top and bottom stops assembled
thereon, if desired, so as to provide a complete slide
fastener, in a well known manner, as shown in FIG. 4 of
the drawings.
As a result of my invention, it will be seen that there is
provided a new and improved plastic slide fastener stringer
which may be inexpensively fabricated with the simplest
of tools and at a minimum cost. It will also be seen that
the interlocking means on the head portions provide an
extremely strong interlock whereby a relatively strong
fastener results.
gated member to a point intermediate the width thereof,
forcing a tool into each of said slots on each side of said
member so as to widen and expand the same so as to
provide a series of spaced-apart interlocking head portions
on one side of said elongated member and a series of
similar spaced-apart attaching portions on the opposite
side thereof, deforming the material of each of said head
portions adjacent the end thereof so as to provide an in
terlocking portion on each of said head portions, and
?nally af?xing the attaching portions to the edge of a
stringer tape.
5. The method of making a continuous fastening device
While I have shown and described an embodiment which
of the type adapted to interlock with a continuous com~
my invention may assume in practice, it will be understood
panion fastening device which comprises providing an
‘that this embodiment is merely for the purpose of il 35 elongated member having a continuous circumferential
lustration and description, and that other forms may be
wall so as to provide a pair of opposed wall portions in
devised within the scope of my invention as de?ned in the
terconnected at each edge, forming a series of spaced
appended claims.
apart transversely extending slots in at least one side of
I claim:
said elongated member, each of said slots extending from
1. The method of making a continuous fastening device 40 the edge of said member to a point intermediate the width
of the type adapted to interlock with a continuous com
thereof, forcing a tool into each of said slots so as to
panion fastening device which comprises providing an
Widen and expand the same so as to provide a series of
elongated member having a pair of opposed wall por
spaced-apart interlocking head portions, and ?nally de
tions interconnected at least along one edge thereof, form
forming the material of each of said head portions ad
45
ing a series of spaced-apart transversely extending slots
jacent the end thereof so as to provide an inter-locking
in at least one side of said elongated member, each of
said slots extending from the edge of said member to a
point intermediate the width thereof, forcing a tool into
portion on each of said head portions.
6. The method of making a stringer for slide fasteners
of the class described which comprises providing an elon
each of said slots so as to widen and expand the same
gated member having a continuous circumferential wall
so as to provide a series of spaced-apart interlocking head 50 so as to provide a pair of opposed wall portions inter
portions, and ?nally deforming the material of each ‘of
connected at each edge, forming a series of spaced-apart
said head portions adjacent the end thereof so as to pro
transversely extending slots in at least one side of said
vide an inter-locking portion on each of said head portions.
elongated member, each of said slots extending from the
2. The method of making a stringer for slide fasteners
of the class described which comprises providing an elon 55 edge of said member to a point intermediate the width
thereof, forcing a tool into each of said slots so as to
Jgated member having a pair of opposed wall portions in
terconnected at least along one edge thereof, forming a
widen and expand the same so as to provide a series of
series of spaced-apart transversely extending slots in at
spaced-apart interlocking head portions, deforming the
portions, deforming the material of each of said head
p7. The method of making a continuous fastening device
material of each of said head portions adjacent the end
least one side of said elongated member, each of said slots
thereof so as to provide an inter-locking portion on each
extending from the edge of said elongated member to a 60
of said head portions, and ?nally affixing the opposite edge
‘point intermediate the width thereof, forcing a tool into
portion of said elongated member to the edge of a stringer
each of said slots so as to widen and expand the same so
ta e.
.as to provide a series of spaced-apart interlocking head
portions adjacent the end thereof so as to provide an 65 of the type adapted to interlock With a continuous com
interlocking portion on each of said head portions, and
?nally at?xing the opposite edge portion of said elongated
panion fastening device which comprises providing an
elongated member having a continuous circumferential
wall so as to provide a pair of opposed wall portions inter
member to the edge of a stringer tape.
connected at each edge, forming a series of spaced-apart
3. The method of making a continuous fastening de
transversely extending slots in the opposite sides of said
vice of the type adapted to interlock with a continuous 70 elongated member, the slots on one side being staggered
companion fastening evice which comprises providing
relative to those on the opposite side, each of said slots
an elongated member having a pair of opposed wall por
extending from the peripheral edge of said elongated
tions interconnected at least along one edge thereof, form
member to a point intermediate the width thereof, forcing
ing a series of spaced-apart transversely extending slots
a tool into each of said slots on each side of said member
7 in the opposite sides of said elongated member, the slots 75 so as to widen and expand the same so as to provide a
'
3,086,246
5
series of spaced-apart interlocking head portions on one
side of said tubular member and a series of similar spaced
apart attaching portions on the opposite side thereof, and
?nally deforming the material of each of said head por
6
‘as to widen and expand the same so as to provide a series
of spaced-apart interlocking head portions on one side of
said tubular member and a series of similar spaced-apart
attaching portions on the opposite side thereof, and ?nally
tions adjacent the end thereof so as to provide an inter
deforming the material of each of said head portions
locking portion on each of said head portions.
8. The method of making a stringer for slide fasteners
portion on each of said head portions.
of the class described which comprises providing ‘an elon
gated member having a continuous circumferential wall
so as to provide a pair of opposed wall portions inter
connected at each edge, forming a series of spaced-apart
lar member, forming a series of spaced-apart transversely
adjacent the end thereof so as to provide an interlocking
11. The method of making a stringer for slide fasteners
of the class described which comprises providing a tubu
extending slots in at least one side of said tubular mem
transversely extending slots in the opposite sides of said
ber, each of said slots extending from the peripheral edge
so as to Widen ‘and expand the same so as to provide a
thereof so as to provide an interlocking portion on each
spaced-apart attaching portions on the opposite side there
of, deforming the material of each of said head portions
stringer tape.
of said tubular member to a point intermediate the width
elongated member, the slots on one side being staggered
thereof, forcing a tool into each of said slots so as to
relative to those on the opposite side, each of said slots
extending from the edge of said elongated member to a 15 widen and expand the same ‘so as to‘ provide a series of
spaced-apart interlocking head portions, deforming the
point intermediate the width thereof, forcing a tool into
material of each of said head portions adjacent the end
each of said slots on each side of said elongated member
of said head portions, and ?nally af?xing the opposite
series of spaced-apart interlocking head portions on one
side of said elongated member and a series of similar 20 edge portion of said tubular member to the edge of a
adjacent the end thereof so as to provide an interlocking
portion on each of said head portions, and ?nally ‘affixing
the attaching portions to the edge of a stringer tape.
9. The method of making a continuous fastening de
vice of the type adapted to interlock with a continuous
companion fastening device which comprises Providing a
12. The method of making a stringer for slide fas~
teners of the class described which comprises providing a
tubular member, forming a series of spaced-apart trans
versely extending slots in the opposite sides of said tubu~
lar member, the slots on one ‘side being staggered rela
tive to those on the opposite side, each of said slots ex
tending from the peripheral edge of said tubular member
to a point intermediate the width thereof, forcing a tool
tubular member, forming a series of spaced-apart trans
versely extending slots in at least one side of said tubular 30 into each of said slots on each side of said tubular mem
member, each of said slots extending from the peripheral
edge ofsaid tubular member to a point intermediate the
width thereof, forcing a tool into each of said slots so as
to widen and expand the same so as to provide a series
of spaced-apart interlocking head portions, and ?nally
deforming the material of each of said head portions ad
jacent the end thereof so as to provide an interlocking
portion on each of said head portions.
1-0. The method of making a continuous fastening de 40
vice of a type adapted to interlock with a continuous
companion fastening device which comprises providing a
tubular member, forming a series of spaced-apart trans
versely extending slots in the opposite sides of said tubular
member, the slots on one side being staggered ‘relative to
those on the opposite side, each of said slots extending
from the peripheral edge of said tubular member to a
point intermediate the width thereof, forcing a tool into
each of said slots on each side of said tubular member so
ber so as to widen and expand the same so as to provide
a series of spaced-apart inter-looking head portions on
one side of said tubular member and a series of similar
spaced-apart attaching portions on the opposite side there
of, deforming the material of each of said head portions
adjacent the end thereof so as to provide an interlock
ing portion on each of said head portions, and ?nally
a?ixing the attaching portions to the edge of a stringer
tape.
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,242,794
Puschner ____________ __ May 20‘, 1941
2,262,881
Boenecke _____________ _. Nov. 18, 1941
2,629,911
Macy ________________ __ Mar. 3, 1953
2,876,519‘
Dittrnayer __________ __ Mar. 10*, 1959
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