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Патент USA US2409967

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Oct. 22, 1946.
Original Filed Jan. 14, 1942
2 Shéets-Sheet 1
Max/<1: Vol ry
A 1v.)
Oct. 22, 1946.
M_ vQrrY'E-r AL
Original Filed Jan. 14, 1942
2 Sheets-Sheet 2
18 A4592”:- Vmvy HIVD
Patented Oct. 22, 1946
Maurice Voity, Bayside, and'George A. Grif?ths,
Kew Gardens, N. Y., assignors to Universal Slide
Fastener‘Cog Inc., Long Island‘City, N. Y., a
corporation of New York
Original application ‘January 14, 1942, Serial No.
426,694, now Patent No. 2,384,144, dated‘ Sep
~ temberv 4, 1945.
Divided and this application
June 1, 1945, Serial No. 597,110
2 Claims. (01. 29-190)
‘Thisrinvention relates to a ‘blank for use in
the manufacture of sliders for slide fasteners.
tinuation-‘impart "of ‘our application ‘Serial ‘No.
426,694; ‘and application‘Serial‘No. 490,406 for
Method and means'for making sliders for~slide
fasteners, ?led June‘ 11, 1943, which is a division
“It has been the‘ practice‘ heretofore to perform
some-or‘all of the operations incident to the
manufacture'of sliders auponiindividual sliders or
slider wing blanks. Due to the fact that the
of application Serial 'No.‘ ‘426,694.
In ‘the accompanying drawings in ‘which is
shown one of the various possible embodiments of
parts on which the operations are performed
are very lsmall in dimension and large in num
this invention and wherein like numbers“ refer to
ber, such‘rnethods have had the disadvantage
like parts throughout, ‘
of having relatively‘slow manufacturing speeds 10 Fig. 1 is a perspective‘view‘ of ‘a strip compris
and high manufacturing costs.
ing‘a'series of‘ integrally connected slider ‘wing
It is a principal object of our invention to over
come ‘these ‘disadvantages-by providing a slider
-‘ Fig.2 is‘a schematic perspective view in section
of‘the dies employed to form rails and attach
blank of such nature that up to the time that a
slider is completelyfashioned'and ready for use, 15 ing portions on slider wing blanks, the same
it is integrally connected to at least one other
being illustrated at the beginning of a forming
similar slider, whereby sliders are never indi
vidually manipulated in the manufacture thereof.
Fig. ‘3_is a schematic perspective view of a mill
In this connection, a more speci?c object of
ing'ldevice employed 'to trim fails on the slider
our invention is to provide‘ a slider blank com
prising ‘two pairs of slider wings, thewings in
each pair being integrally connectedand han
wing blanks;
‘Fig. 4- is ‘a schematic perspective view in partial
section of anapparatus for shearing bail lugs
dled-together during all fabricating‘ operations
and indenting’ lugs in slider wing blanks and for
incident to their formation, and the pairs of
cutting ‘off pairs of connected fully fashioned
wings being interconnected at a‘ stage of the 25 slider wings;
slider fabrication to form a slider blank essen
tially consisting of a pair of integrally connected
but ‘otherwise ?nished sliders so that up to the
time the sliders are completely fashioned they
still can be handled and worked jointly.
~Other objects of this invention will, in part,
‘ Fig. 5 shows top and ‘bottom perspective‘ views
of ‘pairs ‘of connected, fully fashioned ‘ slider
Fig. 6 is a perspective View of a slider blank
together with welding electrodes employed in the.
formation thereof; and
be obvious‘and, in part, hereinafter pointed out.
‘Fig. '7 is a‘schematic‘perspective view in‘ section
The invention accordingly consists in the fea
of the-‘dies employed ‘to separate and size con
tures of construction, combinations of elements,
nected pairs ‘of sliders in‘a slider ‘blank.
' ‘
and arrangement of ‘parts which will be exempli 35 Referring now to the drawings, and more 'par
?ed in‘the construction hereinafter described,
ticularly to’Fig‘J'I,‘ a slider l0 constructed in ac
and of which the scope of application will be
indicated in the claims.
Certain featureslof our invention herein shown
and described, but not claimed, are more fully
shown, described and claimed in our‘following
applications: application Serial No. 426,694 (is
sued September 4, 1945, as U. S. ‘Letters Patent
2,384,144) for ‘Method and ‘means‘for ‘making
sliders‘for‘slide fasteners, ?led J anuary‘ 14, 1942‘,
of Iwhiclrthe present application is a division;
cordance‘with our invention comprises an upper
wing 12 from which a bail”; projectsland a
lower wing 16. #Rails 18‘ run along the lateral
edges of the ‘slider wings. ‘Between the diverging
channels‘20,‘ the material‘ of each sli'der'wing‘is
directed (downwardly to form a substantially
, V-shaped vertical wall 22 which serves to de?ne
theienga‘gemen‘t cam> employed in all ‘sliders‘of
this type. Flat platforms 24 disposed at the base
of the walls 22 ‘serve as‘atta‘ching portions which,
when welded‘together, join the upper‘andllower
application‘ Serial No. 446,062 (issued September
4, 1945, as
8. Letters Patent 2,383,999) for
wings l2 and 16 of the slider and function as a
Method‘ and means for making sliders for slide .50
fasteners, ?led June 6, 1942, which is a continu
Various details may be incorporated in the’slid- '
ation-in-part of application Serial No. 426,694;
er to enhance‘ its appearance, reinforce its struc
application Serial No. 446,063 (issued September
ture and provide‘ a‘ smooth sliding action. ‘For
4, 1945, as U. S. Letters Patent 2,384,145) for
example, the edges 26‘ of the entering channel
Method and means ‘for making sliders for slide
and the edges 28 of the-diverging channels 20
fasteners, ?led June 6, ‘1.942, which is g, cm. 55 may be beveled. ' The outer endsof the platforms
24 may project beyond the extreme ends of the
diverging channels 2E! and may be smoothly
rounded ‘off. A web .33 may be indented from
material of the bail! l4, said web being disposed
medially and longitudinally of the bail.
To make the sliders Ill, a long strip of sheet
metal of suitable composition. is ?rst blanked
out, for example, in a reciprocatingpress, to form
a strip 32 (Fig. 1) comprising a ‘series ‘of in
tegrally connected slide fastener wing blanks 34.
die block are cut away as at ‘58 to conform exactly
to the shape of the edges 38 on the strip 32.
Pilot posts @553 carried by a reciprocating head
(not shown) cooperate with the said recesses
55 to insure proper registration of the pair 40 of
wing blanks being worked in the apparatus 50.
Slidably mounted in the die block 52 interme
diate the recesses 53 is a pad 62 centrally aper
tured at ?ll. The die block 52 is recessed from
10 the'top face to the bottom face thereof, to receive
The shape of these blanks is governed ingeneral
by the outline of the wings in the slider ultimately
to be produced.
In the preferred form of ourinvention illus
trated herein, the slider wing blanks 34 are similar
in shape to the slider wings ‘l2 and is, but are
slightly broader in order to provide material for
the rails l8. Each blank 34 is also provided with
' material 35 from which the neck and attaching
said sliding pad 32. This pad conforms in shape
to ‘the plan pro?le of a pair of slider wings l2
and it having a link d2 connecting the same
betweentheir diverging channel portions. The
shape of the central aperture 63 in the pad con
forms to the plan pro?le of the diamond shaped :
projection 48.’
' Slidably and snugly received in said aperture
Mi is'al'post at, whose upper surface E8 is of the
same shape as the outer surface of the diamond
portion, including the walls 22 and platform 24,
can be‘ shaped. If desired, during the blanking
shaped projection (is. Said post is ?xedlyv mount
operation bevels 3e and 38 may be formed on
the edges of the slider blank which will subse
quently form the inclined edges 23 and 23 of the
ed in the bed plate 5% by suitable means (not
shown) and is, therefore, stationary with respect
to the die block 52, but movable relative to the
in each pair being integrally connected by a link
of the block 52 to freely receive the portions of
entering and diverging channels.
25 pad 62. A resilient block (not shownlis pro
vided to bias the pad 32 upwardly.
The slider wing blanks 34 are disposed longi
Cut-outs '53 may be provided on opposite sides
tudinally of ‘the strip 32 in pairs 40, the blanks
the strip 32 not being worked upon when said
will be completely sheared away. Although for 30 strip is depressed during drawing‘ of the rails IS.
A punch '52, carried on the same movable recipro
convenience ‘of handling, the individual slider
cating head as the pilot posts ~39, is formed with
wing blanks 34 in a pair of such connectedlblanks
a cross-section similar to’ the pad 62, but is
may be disposed in any desired position, we pref
42 which, during a subsequent stage of operation,
erably connect the portions 35 of the wing blanks
by the linksllz in order to facilitate the attaching
operation hereinafter described.
slightly narrower to accommodate the rails be
tween'said punch and the walls of the aperture
in which the pad 32 slides. An aperture 14 is
vertically disposed in the center of the punch 12
to receive the elongated diamond shaped projec
tion ii?'when said punch moves downover the
provided ‘a link M for integrally connecting suc
cessive pairs of wing blanks so as to form the 140 postl?iih The aperture 7% is larger than the‘ post
35, in order to accommodate the walls of the pro
elongated strip 32. It should'be noted that both
the links 42 and M are fullyqsevered‘from the
Suitable feeding means (not shown) is provided
strip 32 during subsequent operations'inthe for
to intermittently advance the strip 32 between
mation of the separate slider wings and sliders,
strokes of the punch ‘l2. Since feeding mechaand that therefore these links may be caused
In addition to the link 42 integrally connecting
the Wing blanks 34‘ in a pair 40, there is also
nisms common to the art are not accurate in their
to assume any desired shape, or may- be omitted
altogethen'and in which latter case the‘ slider
movement, we may bevel ‘off the lower edges 16 of
wing blanks 34 will be directly integrally con
nected to each other.
the pilot posts es in order to exactly position the
strip .32’ prior to the rail drawing operation.
, After the strip 32, of wing blanks 3A haslbeen
made, the rails I8 are formed in a drawing op
eration, such as. illustrated inrFig. 1. This op
eration, as well as alllsubsequent operations, is
When the‘strip is advanced, it preferably lies/on
the upper surface'of the die block '32 ‘and may be
guided in such position ‘by a combined guide and .
preferably simultaneously performed on each
wing blank ‘of apair-4ll of such blanks. The;
Next, the rough edges as are‘trimmed off to re
duce the rails ill to ‘their ultimate predetermined
height. This operation may be performed inia
machine 18 comprising a pair-of spaced parallel
milling cutters 83, 82 which are rotated at a high
speed to cleanly remove the extra railmaterial
and leave no jagged edges which require’ further
height of ‘the rails I8 thus formed “may be made
greater thanv desired in the ?nished slider ll),
no attempt being exerted to control the shape
of the‘ upper rail surface. Due to drawing this
upper ,railrsurface is considerably roughened
along the outer edge thereof, as shown-at 46. At
the same time the rails are drawn, elongated
diamond shaped projections 48 are fashioned >
from the material 35 of the wing blanks and
from the links A2. Each end of an elongated
diamond 38' is disposed in a different embryonic
wing blank 34, ‘and‘said ends form the V-shaped
walls 22 and platforms 24.
Any suitable mechanism, as for example, the
‘ apparatus/53, may beused to carryout the draw
ing‘operation. Said apparatus comprises‘ a lower
. stationary ‘die block 52 mounted upon a bed plate
54.‘v The 'central-portionof said/die block iscut
~ awayto provide'a pair of opposedrectangular
recesses 56v Whose corners near the center oflthe 75
stripper plate (not shown).
, ,7
In‘ the next operation, each alternate- wing
blank is provided, by a shearing operation (Fig.
4), with a lug lid whose central portion 86 isfree
of theslider wing blank from which it projects.
The ends 88 of the lug are integrally connected
with the ‘said wing blank. Portions of‘the-cen
tral parts 83 of the lugs are thereupon indented
to provide the web
Prior ‘to and during the
indenting operation, the slider wing blank 34‘ on
which the lug as is positioned, may be'?rmly
gripped on its upper and lower surfaces; and die
additionaily may be employed to limit the
in.overnentv of the said centralportioniit during
indentation and web forming-l r
Subsequent to formation of the web, we shear
correct this, and to sever the connected pair of
off sets or pairs 98 of now completed slider wings.
sliders H) in such a slider blank I86 from each
Each of said pairs includes one ?nished slider
other, said slider blank is cut in half (Fig. 17) and,
wingl? having a bail projecting therefrom and
optionally, at the same time sized, whereby to
one ?nished slider wing i 5 without a bail. At this
dispose the slider wings l2 and I t in parallel,
time the said pairs 86 have'the appearance shown
properly spaced relationship,and to align the
in Fig. 5. It should be noted that the two con
rails I8.
nected ?nished slider wings of anypair‘i! of such
The severing and sizing operations may be car
wings are not used together to make a slider I ll,
ried out in an apparatus H5. Said apparatus
but that each wing in said pair will be used with a 10 comprises a reciprocating head (not shown)
Wing from another pairto form a slider.
which carries a punch H2 and a stationary bed
The lug forming, indenting and shearing op
plate‘mot shown) on which a die block II4 is
erations may be carried out by an apparatus 92
mounted. Said block has a rectangular recess
comprising a stationary bed, a reciprocating
I i6 which slidably receives a pair of pilot posts
head, and an intermittent feeding means for the 15 H8 integralv with the punch M2 to accurately
strip 32 (all not shown). Said head carries a
position the slider blank It prior to separating
punch 94 for shearing out the lug 8d. The head
the pair of sliders IS in said blank.
also carries means for moving a pair of indenting
Disposed on each side of the recess H6 are a
dies at toward a lug 8d which has been previously
pair of cut-outs I20 in which the slider blank
sheared out by the punch 911. A die block 98 co 20
we is positioned. The walls of the cut-outs
operating with the indenting dies 96 limits down
which lead toward the recess IlB are angularly
ward movement of the central portion v86 of the
inclined to conform to the angle of the slider
lug and causes the bail Ill formed by said dies to
wings de?ning the diverging channels 20. The'
assume the desired con?guration. The recipro
cut-outs are made deep enough to substantially
cating head also carries a shearing punch Illll 25 fully receive the slider blanks IE5. Elongated
which cooperates with a stationary anvil (not
narrow grooves 122 are formed in each of the
shown) on the bed to successively cut off pairs
cut-outs I20 to receive the bails I4. A ?nger I24
90 of the ?nished slider wings from the end of
into the recess H6 from each one of the
the strip 32.
cut-outs no to provide an anvil cooperating with
It may be pointed out here that the blanking, 30 the operative portion IZG'of the punch IIZ. Said '
rail and diamond forming, rail trimming, and
portion !26 is concavely shaped, as illustrated, to
bail forming operations may be performed as a
conform to the desired outline of the free end of
continuous process on a strip from which the
the platform 24.
pairs 96 are ?nally sheared or they may be sepa
While the punch H2 is descending, sizing
rately performed upon a strip which is reeled 35
I28 are moved inwardly into the entrance
up after each operation.
The pairs 90 of connected ?nished slider wings
are arranged in groups of two, as illustrated in
channel of each of the sliders Ill. Said plates
may be actuated from the reciprocating head of
the apparatus IIB by any suitable means. 'The
ends of the plates I28 are bifurcated to form di
Fig. 5, with the rails facing each other and the
diamond shaped projections G8 in registration. 40 verging ?ngers I30 shaped to the desired inner
Said diamond shaped projections then are
contour of a portion of the diverging channels 28.
abutted and welded together (Fig. 6). It is par
When the head which carries the punch I I 2
ticularly pointed out that by disposing the at
has fully descended, it will clamp the pair of
taching portions 35 of the wing blanks 34 in prox
imity, we are able in a single welding operation 45 sliders I8 which have been severed from ‘each
other between the said head and the die block
involving only one pair of electrodes to simultane
H4, with the ?ngers I28 disposed inside of the
ously weld together four slider wings and form a
slider and thus accurately size the sliders to their
slider blank 166 comprising two integrally con
desired ultimate shape with the Wings parallel
nected fully fashioned sliders.
The welding apparatus is schematically indi 50 and the proper distance apart, and the wings and
rails in alignment. While this sizing operation
cated in Fig. 6 and may be of any form suitable
is of aid in bringing the slider to its ?nal cor
for the purpose.
rect size and shape, the slider has nevertheless
As illustrated, said apparatus comprises a pair
already been completely fashioned. and said siz
of spot welding electrodes “82, IM and holding
operation is not embraced within the term ‘
means (not shown) to position two pairs 98 of 55 ing
“forming” as used herein.
finished slider wings in the manner shown in
It will thus be seen that we have provided
said ?gure; that is, with the rails I8 facing each
a slider blank and method for making and using
other and with an upper wing I 5 not having a bail
the same, pursuant to which the several objects
facing a lower’wing I2 with a bail.
The welding operation results in the formation 60 of this invention are achieved, and which is well
adapted to meet the conditions of practical use.
of what is herein referred to as a blank 566 for
As various possible embodiments might be
use in manufacturing sliders for slide fasteners,
made of the above invention, and as various
more brie?y called a “slider blank,” and is to be
changes might be made in the embodiment above
distinguished from the slider wing blanks 31!
forth, it is to be understood that all matter
hereinbefore referred to or from the pairs ?ll of
herein set forth or shown in the accompanying
completely ?nished wings. Said slider blank, as
drawings is to be interpreted as illustrative and
clearly shown, comprises two pairs of spaced
not in a limiting sense.
parallel completely fashioned slider wings, each
Having thus described our invention, we claim
integrally connected by a neck, the necks them
as new and desire to secure by Letters Patent:
selves beinrr integrally connected, whereby to
1. A slider blank comprising two pairs of spaced
form two sliders iii joined by a piece Hi8 of ma
completely fashioned slider wings, each
terial comprising a pair of links 42.
wing having a plane body portion with rails run
During the welding operation the slider wings
forming part of the slider blank IE6 may be
ning along its lateral edges and extending away
from the plane of said body portion, and each
slightly angularly moved out of parallelism. To 75 wing having an attaching portion raised above
from the plane of said body'portionand each
wing :having an attaching portion raised above
said body portion-and extending in the same di
immediately adjacent and being integrally oon~
rection as said rails, each attaching portion lying
neoted to the other attaching'portion of the same
‘immediately adjacent and being integrally con
pair, the attaching portions oi?v one of said pairs
nected to the other attaching portion of the same
being integrally connected to the attaching por
pair by 'a-link; the attaching portions of one of
tions of the other of said pairs, the Wings and
said pairs being integrally connected to the at
attaching portions being in alignment and the
taching portions of the other of said pairs, the
rails being opposed.
2. A slider blank comprising two pairs of spaced 10 wings and attaching portions being in alignment
said body portion and extendingv in the same di
rection‘ as said rails, each attaching portion lying ‘
parallel completely fashioned slider wings, each
wing having a plane body portion with rails run
ningalong its lateral edges and extending away
and the ‘rails being ' opposed.
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