US3320645A - Lock slider for zipper fasteners - Google Patents

Lock slider for zipper fasteners Download PDF

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Publication number
US3320645A
US3320645A US51909066A US3320645A US 3320645 A US3320645 A US 3320645A US 51909066 A US51909066 A US 51909066A US 3320645 A US3320645 A US 3320645A
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Grant
Patent type
Prior art keywords
member
locking
end
slider
cap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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Inventor
John E Burbank
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Scovill Inc
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Scovill Inc
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    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00Slide fasteners
    • A44B19/24Details
    • A44B19/26Sliders
    • A44B19/30Sliders with means for locking in position
    • AHUMAN NECESSITIES
    • A44HABERDASHERY; JEWELLERY
    • A44BBUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00Slide fasteners
    • A44B19/24Details
    • A44B19/26Sliders
    • A44B19/30Sliders with means for locking in position
    • A44B19/306Sliders with means for locking in position in the form of a locking spring member actuated by the pull member
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00Buckles, buttons, clasps, etc.
    • Y10T24/25Zipper or required component thereof
    • Y10T24/2561Slider having specific configuration, construction, adaptation, or material
    • Y10T24/2566Slider having specific configuration, construction, adaptation, or material including position locking-means attached thereto
    • Y10T24/257Slider having specific configuration, construction, adaptation, or material including position locking-means attached thereto having surface engaging element shifted by reorientation of pull tab
    • Y10T24/2571Resilient or spring biased element

Description

May 23, 1967 J. E. BURBANK LOCK SLIDER FOR ZIPPER FASTENERS Filed Jan. 6. 1966 United States Patent 3,320,645 LOK SHEER FUR ZIPPER FASTENERS John E. Burbank, Middlebnry, Conn, assignor to Scovill Manufacturing (Jompany, Waterbury, Conn, 21 corporation of Connecticut Filed Jan. 6, 1966, Scr. No. 519,090 6 Claims. ((Il. 24--2ti5.14)

This invention relates to zipper fasteners, and more particularly to an improved automatic lock slider.

Many automatic lock sliders have been devised and used involving some spring action on a locking member which is under the control of the pull tab. It has usually been considered desirable to employ a minimum number of pieces; namely: the slider body, the pull tab and the locking member.

In adapting a single member for the normal locking functions, and also for secure attachment to the slider, various more or less difiicult and complicated shapes have been proposed. In particular, this invention aims at an improvement in the three-piece slider of the Firing Patent 2,453,660. There, the locking member is formed as one piece With the cover cap by which attachment to the slider body is made. This combined locking member and cap is, in common with all other known automatic locking members, somewhat complicated and especially difiicult to feed in orderly arrangement into an automatic assembly machine. These pieces are light in weight and of unsymmetrical shape but for mechanical assembly, they must in some manner be put in orderly arrangement. Since the pieces are unsymmetrical about any plane, this presents a difficult problem and one which usually requires the constant attention of an operator.

In the present invention, I employ separate pieces for the lock and cap but they are so simple in shape that they can be made more economically than one complicated piece and more importantly, they are symmetrical about normal median planes extending transversely and longitudinally of the pieces. Thus, they can easily by hoppered and fed in orderly arrangement in automatic assembly operations because they need to be oriented only in one direction.

Another advantage of my improved construction is the ability to make the locking member itself heavier and stronger because the spring can be incorporated in the attaching cap.

Other objects and advantages of the invention will hereinafter more fully appear.

In the accompanying drawing, I have shown for purpose of illustration, two embodiments which the invention may assume in practice. In the drawing:

FIG. 1 is a perspective view of my improved slider;

FIG. 2 is a longitudinal central section;

FIG. 3 is a perspective of the locking member;

FIG. 4 is a perspective of the cap;

FIG. 5 is a detailed section on line 55 of FIG. 2;

FIG. 6 is an enlargement of a portion of FIG. 2 to indicate the different positions of the locking member and one of the springy sections of the cap; and

FIG. 7 is a longitudinal section illustrating a modification.

The slider body, which is preferably die cast or molded, has the front wing 8, the back wing 9 and the usual connection neck 10. One or both of the wings is provided with side flanges or rails 11 and thus, the wings, neck and flanges define a Y-shaped channel for the zipper fastener elements. The neck end of the slider will be referred to as the upper end and of course, the narrow end of the slider, the lower end.

At the upper end of the slider body a pair of forwardly projecting laterally spaced lugs 12 and 13 are formed ice so as to provide shoulders 14, as seen in FIG. 5. The lower end of the slider also has a pair of spaced lugs 15 and 16 which are likewise provided with shoulders similar to the shoulders 14; and in this case, the lugs may be integrally connected near the bottom end of the slider by the section of metal indicated at 17 in FIG. 2.

The locking member which is bent into shape from a simple strip of fiat metal, fits loosely between the lugs 12 and 13 at the upper end and extends over the front wing and through a hole 18 near the lower end of the slider. This locking member has like-shaped inturned or right angled upper and lower end portions 19 and 20, respectively. The lower end 2'!) extends through the hole 18 into the slider channel to engage fastener elements While the upper end is nested in a recess 21 in the slider neck 10 and acts as a fulcrum for the locking member. The whole central region of the locking member may be referred to as an arched portion but preferably, midway between the ends there is formed a V-shaped depression 22 which provides inclined surfaces 23 and 24 on the back side of the locking member. Actually then, this forms two arches 25 and 26 which are joined to the right angled end portions 19 and 20 by inclined sections 27 and 28, respectively. At the juncture of these inclined sections with the right angled end portions 19 and 20, there are shoulders 29 and 30.

Since the locking member is symmetrical as already indicated, it is immaterial which end is uppermost in the final assembly. During assembly, there is first put in place the pull tab 31 with its pintle portion 32 in the space between the upper and lower sets of lugs on the slider. This pintle portion will co-operate with one or the other of the inclined sections 27 and 28 to lift the locking member on a downward pull and with either of the inclined surfaces 23 and 24 on the upward pull. To assist this outward camming action of the locking member, there may also be provided upper and lower ramps 33 and 34 on the slider body.

The parts are held together by the cap shown in FIG. 4. This is also simply sheared from a piece of strip metal and bent to shape and is likewise symmetrical about both the normal median transverse and longitudinal planes. The cap has a central wide section 35 which fills in the space between the upper and lower lugs 12 and 13 in the slider body, and like-shaped curved springy end sections 36 and 37 which are joined to the central portion 35 by the anchor sections 38 and 39 fitting against the shoulders 14 of the lugs 12, 13, 15 and 16. The cap can be dropped into place without regard to its endwise orientation and secured by bending over the edge portions 40 of all of the lugs in the manner indicated in FIG. 5.

One or the other of the springy ends 36 and 37 will bear against the locking member near to, but at some distance from the fulcrum end, and preferably, this hearing is against one of the shoulders 29 or 30. The springy end portion which happens to come at the lower end of the slider has no function except to make a neat cover for the lower end of the front wing. The movement of the locking member and the active springy section of the cap is best depicted in FIG. 6 where the full lines show the locked position and the dotted lines, the unlocked position. In the modification shown in FIG. 7, all parts are the same in general, except for the cap and except for the absence of shoulders 29 and 30 on the locking memher.

The cap is made somewhat longer and springy extensions 41 and 42 are bent upon themselves so that one or the other, depending upon the way the cap is assembled, will bear on one of the inclined portions 27 or 28 depending on which way the locking member is assembled. In FIG. 7, there is also shown another possibility. The lower lugs and 16 do not project as far forwardly as the upper lugs 12 and 13. The cap can, nevertheless, be made symmetrical initially and forced into place during assembly. This construction has the advantage that outside pressure as from a flatiron will be borne largely in the upper region of the slider which, of course, is best adapted to resist such pressure.

In operation, one of the springy extensions of the cap bearing against the locking member will normally urge the lower end portion 19 or 29 as the case may be, into locking position as seen in full lines in FIG. 2. One of the shouldered portions 29 and 36 of the locking member will bear against a shoulder 44 formed in the front wing to limit the inward movement of the locking member. When a force to applied to the pull tab 31, either upwardly, downwardly or straight forwardly, the locking member will, of course, be lifted so that the parts assume the dotted line position seen in FIG. 2, and the cap itself will limit outward movement of the locking member and transmit any further pulling force to the slider.

The important advantages of making the parts symmetrical so that they can be easily hoppered and assembled will more than ofiset the disadvantage of having an extra piece, especially since the parts themselves are so simple and so easily made. Furthermore, the locking member can be made of any desired thickness of material for strength because the spring action is derived from the cap. 7

What I claim is:

1. A slider for zipper fasteners comprising (a) a rigid body member having front and back wings joined by a neck at one end and providing a Y-, shaped channel, that end of the slider having the neck being herein called the upper end;

(b) a pair of laterally spaced lugs projecting forwardly from the upper end portion of the slider;

(c) a locking member fitting loosely between said lugs and extending lengthwise over said front Wing, said locking member having like-shaped inturned end portions, the upper one of which rests in a recess in said slider neck to provide a fulcrum for the locking member, while the lower inturned end portion extends through a hole in said front wing near the lower end of the slider and moves in and out of said channel as the locking member is tilted inwardly or outwardly about said fulcrum, said locking member being symmetrical about a plane extending at right angles through the locking member midway between its ends and also about a plane extending at right angles to said first plane and through the longitudinal center line of said locking member, said locking member having an arched portion intermediate said ends;

(d) a pull member having a pintle portion extending through said arched portion; and

(e) a cap extending over said locking member, said cap being anchored to said lugs and also to the lower end portion of said front wing, said cap having springy tongues at opposite ends, the upper one of which bears against said locking member at a point spaced from said fulcrum to urge said locking member to locking position, said pull member serving to tilt said locking member forwardly to unlocked position. 7

2.. A slider as defined in claim 11, wherein said locking member is a rigid strip of fiat metal bent to shape.

3. A slider as defined in claim 1, wherein said locking member has a centrally located V-shaped depression providing an inclined surface on the back side to co-operate with the pull tab in the movement of the locking member, thus dividing the middle region of the locking member into two arched portions-which connect with said inturned end portions by inclined sections.

4. A slider as defined in claim ll, wherein said cap is likewise symmetrical about normal median, transverse and longitudinal planes.

5. A slider as defined in claim 1, wherein the anchoring means for the lower end of said cap comprises a second pair of laterally spaced lugs.

6. A slider as defined in claim 5, wherein said second pair of lugs do not project as far forwardly as the other pair.

References Cited by the Examiner UNITED STATES PATENTS 2,453,660 11/1948 Firing 24205.14

FOREIGN PATENTS 578, 141 6/ 1946 Great Britain. 851,767 10/ 1960 Great Britain. 853,9Q5 11/1960 Great Britain 978,831 12/1964 Great Britain.

BERNARD A. GELAK, Primary Examiner.

Claims (1)

1. A SLIDER FOR ZIPPER FASTENERS COMPRISING (A) A RIGID BODY MEMBER HAVING FRONT AND BACK WINGS JOINED BY A NECK AT ONE END AND PROVIDING A YSHAPED CHANNEL, THAT END OF THE SLIDER HAVING THE NECK BEING HEREIN CALLED THE UPPER END; (B) A PAIR OF LATERALLY SPACED LUGS PROJECTING FORWARDLY FROM THE UPPER END PORTION OF THE SLIDER; (C) A LOCKING MEMBER FITTING LOOSELY BETWEEN SAID LUGS AND EXTENDING LENGTHWISE OVER SAID FRONT WING, SAID LOCKING MEMBER HAVING LIKE-SHAPED INTURNED END PORTIONS, THE UPPER ONE OF WHICH RESTS IN A RECESS IN SAID SLIDER NECK TO PROVIDE A FULCRUM FOR THE LOCKING MEMBER, WHILE THE LOWER INTURNED END PORTION EXTENDS THROUGH A HOLE IN SAID FRONT WING NEAR THE LOWER END OF THE SLIDER AND MOVES IN AND OUT OF SAID CHANNEL AS THE LOCKING MEMBER IS TILTED INWARDLY OR OUTWARDLY ABOUT SAID FULCRUM, SAID LOCKING MEMBER BEING SYMMETRICAL ABOUT A PLANE EXTENDING AT RIGHT ANGLES THROUGH THE LOCKING MEMBER MIDWAY BETWEEN ITS ENDS AND ALSO ABOUT A PLANE EXTENDING AT RIGHT ANGLES TO SAID FIRST PLANE AND THROUGH THE LONGITUDINAL CENTER LINE OF SAID LOCKING MEMBER, SAID LOCKING MEMBER HAVING AN ARCHED PORTION INTERMEDIATE SAID ENDS; (D) A PULL MEMBER HAVING A PINTLE PORTION EXTENDING THROUGH SAID ARCHED PORTION; AND (E) A CAP EXTENDING OVER SAID LOCKING MEMBER, SAID CAP BEING ANCHORED TO SAID LUGS AND ALSO TO THE LOWER END PORTION OF SAID FRONT WING, SAID CAP HAVING SPRINGY TONGUES AT OPPOSITE ENDS, THE UPPER ONE OF WHICH BEARS AGAINST SAID LOCKING MEMBER AT A POINT SPACED FROM SAID FULCRUM TO URGE SAID LOCKING MEMBER TO LOCKING POSITION, SAID PULL MEMBER SERVING TO TILT SAID LOCKING MEMBER FORWARDLY TO UNLOCKED POSITION.
US3320645A 1966-01-06 1966-01-06 Lock slider for zipper fasteners Expired - Lifetime US3320645A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US3320645A US3320645A (en) 1966-01-06 1966-01-06 Lock slider for zipper fasteners

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US3320645A US3320645A (en) 1966-01-06 1966-01-06 Lock slider for zipper fasteners
GB5802366A GB1119160A (en) 1966-01-06 1966-12-28 Improvements in or relating to sliders for sliding clasp fasteners
FR89479A FR1506992A (en) 1966-01-06 1966-12-30 Slider for sliding closure
DE19676606815 DE6606815U (en) 1966-01-06 1967-01-05 Automatically-locking slider for zippers.
DK8967A DK127672B (en) 1966-01-06 1967-01-06 Zipper Slider with locking element.

Publications (1)

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US3320645A true US3320645A (en) 1967-05-23

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ID=24066782

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US3320645A Expired - Lifetime US3320645A (en) 1966-01-06 1966-01-06 Lock slider for zipper fasteners

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US (1) US3320645A (en)
DE (1) DE6606815U (en)
DK (1) DK127672B (en)
FR (1) FR1506992A (en)
GB (1) GB1119160A (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793684A (en) * 1969-09-15 1974-02-26 Textron Inc Slider for slide fastener
US3813736A (en) * 1971-02-15 1974-06-04 Yoshida Kogyo Kk Automatically locking slider for zip fastener
US4074399A (en) * 1976-11-08 1978-02-21 Textron, Inc. Slider for slide fastener
US4271567A (en) * 1978-03-30 1981-06-09 Yoshida Kogyo K.K. Automatic lock slider for slide fastener
US4667376A (en) * 1985-05-24 1987-05-26 Yoshida Kogyo K. K. Automatic locking slider for slide fasteners
US4719673A (en) * 1986-02-17 1988-01-19 Yoshida Kogyo K. K. Lockable slider for slide fasteners
US4780938A (en) * 1986-12-19 1988-11-01 Yoshida Kogyo K. K. Slide fastener slider with detachable pull tab
US5212852A (en) * 1991-04-16 1993-05-25 Georg Zachres Safety fastener
US5535492A (en) * 1994-11-08 1996-07-16 Lai; Coach Automatic lock sliders for slide fasteners
US5745960A (en) * 1996-06-18 1998-05-05 Walrus, Inc. Zipper apparatus and method facilitating maintenance and repair
US6009602A (en) * 1997-12-18 2000-01-04 Ykk Corporation Separable bottom end stop and a slider having a locking mechanism of a slide fastener
US6094786A (en) * 1997-09-19 2000-08-01 Ykk Corporation Slide fastener slider and mold for die-casting the same
EP1262115A2 (en) * 2001-04-23 2002-12-04 Ykk Corporation Slider for slide fastener with locking device
US20040103502A1 (en) * 2002-12-02 2004-06-03 Tan Ming Chen Zipper slide for invisible zip fastener
US20050125967A1 (en) * 2003-12-16 2005-06-16 Koji Yamagishi Slider for slide fastener with automatic stopper
US20100299886A1 (en) * 2009-05-27 2010-12-02 Eric Fodge Zipper with removable slider
US20110214261A1 (en) * 2010-03-05 2011-09-08 Shigeyoshi Takazawa Slider assembly
CN102771962A (en) * 2012-07-30 2012-11-14 福建浔兴拉链科技股份有限公司 Planar pull head
US9370225B1 (en) * 2015-03-13 2016-06-21 Chung Chwan Enterprise Co., Ltd. Zipper head assembly structure for increasing torsional strength and sliding member thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2345726A (en) * 1999-01-12 2000-07-19 Ykk Europ Ltd Detachable pull tab

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB578141A (en) * 1944-08-21 1946-06-17 Francis Paul Sutton Improvements in or relating to sliders for sliding clasp fasteners
US2453660A (en) * 1944-07-28 1948-11-09 Talon Inc Slider for slide fasteners
GB851767A (en) * 1958-05-05 1960-10-19 Aero Zipp Fasteners Ltd Improvements in or relating to sliders for sliding clasp fasteners
GB853905A (en) * 1956-09-07 1960-11-09 Hansen Harry A slider for sliding clasp fasteners
GB978831A (en) * 1961-10-26 1964-12-23 Aero Zipp Fasteners Ltd Improvements in or relating to sliding clasp fasteners

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2453660A (en) * 1944-07-28 1948-11-09 Talon Inc Slider for slide fasteners
GB578141A (en) * 1944-08-21 1946-06-17 Francis Paul Sutton Improvements in or relating to sliders for sliding clasp fasteners
GB853905A (en) * 1956-09-07 1960-11-09 Hansen Harry A slider for sliding clasp fasteners
GB851767A (en) * 1958-05-05 1960-10-19 Aero Zipp Fasteners Ltd Improvements in or relating to sliders for sliding clasp fasteners
GB978831A (en) * 1961-10-26 1964-12-23 Aero Zipp Fasteners Ltd Improvements in or relating to sliding clasp fasteners

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793684A (en) * 1969-09-15 1974-02-26 Textron Inc Slider for slide fastener
US3813736A (en) * 1971-02-15 1974-06-04 Yoshida Kogyo Kk Automatically locking slider for zip fastener
US4074399A (en) * 1976-11-08 1978-02-21 Textron, Inc. Slider for slide fastener
US4271567A (en) * 1978-03-30 1981-06-09 Yoshida Kogyo K.K. Automatic lock slider for slide fastener
US4667376A (en) * 1985-05-24 1987-05-26 Yoshida Kogyo K. K. Automatic locking slider for slide fasteners
US4719673A (en) * 1986-02-17 1988-01-19 Yoshida Kogyo K. K. Lockable slider for slide fasteners
US4780938A (en) * 1986-12-19 1988-11-01 Yoshida Kogyo K. K. Slide fastener slider with detachable pull tab
US5212852A (en) * 1991-04-16 1993-05-25 Georg Zachres Safety fastener
US5535492A (en) * 1994-11-08 1996-07-16 Lai; Coach Automatic lock sliders for slide fasteners
US5745960A (en) * 1996-06-18 1998-05-05 Walrus, Inc. Zipper apparatus and method facilitating maintenance and repair
US5940941A (en) * 1996-06-18 1999-08-24 Edgeworks, Inc. Zipper apparatus and method facilitating maintenance and repair
US6227283B1 (en) 1997-09-19 2001-05-08 Ykk Corporation Slide fastener slider and mold for die-casting the same
US6094786A (en) * 1997-09-19 2000-08-01 Ykk Corporation Slide fastener slider and mold for die-casting the same
US6009602A (en) * 1997-12-18 2000-01-04 Ykk Corporation Separable bottom end stop and a slider having a locking mechanism of a slide fastener
EP1262115A2 (en) * 2001-04-23 2002-12-04 Ykk Corporation Slider for slide fastener with locking device
EP1262115A3 (en) * 2001-04-23 2003-12-17 Ykk Corporation Slider for slide fastener with locking device
US20040103502A1 (en) * 2002-12-02 2004-06-03 Tan Ming Chen Zipper slide for invisible zip fastener
US20050125967A1 (en) * 2003-12-16 2005-06-16 Koji Yamagishi Slider for slide fastener with automatic stopper
US7219401B2 (en) * 2003-12-16 2007-05-22 Ykk Corporation Slider for slide fastener with automatic stopper
US20100299886A1 (en) * 2009-05-27 2010-12-02 Eric Fodge Zipper with removable slider
US20110214261A1 (en) * 2010-03-05 2011-09-08 Shigeyoshi Takazawa Slider assembly
US8474109B2 (en) * 2010-03-05 2013-07-02 Ykk Corporation Slider assembly
CN102771962A (en) * 2012-07-30 2012-11-14 福建浔兴拉链科技股份有限公司 Planar pull head
CN102771962B (en) * 2012-07-30 2016-04-13 福建浔兴拉链科技股份有限公司 A flat slider
US9370225B1 (en) * 2015-03-13 2016-06-21 Chung Chwan Enterprise Co., Ltd. Zipper head assembly structure for increasing torsional strength and sliding member thereof

Also Published As

Publication number Publication date Type
FR1506992A (en) 1967-12-22 grant
DE6606815U (en) 1970-12-17 grant
GB1119160A (en) 1968-07-10 application
DK127672B (en) 1973-12-17 grant

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