US3522638A - Slide-fastener slider with locking pawl - Google Patents

Slide-fastener slider with locking pawl Download PDF

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Publication number
US3522638A
US3522638A US761092A US3522638DA US3522638A US 3522638 A US3522638 A US 3522638A US 761092 A US761092 A US 761092A US 3522638D A US3522638D A US 3522638DA US 3522638 A US3522638 A US 3522638A
Authority
US
United States
Prior art keywords
slider
locking pawl
pawl
locking
shield member
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
Application number
US761092A
Other languages
English (en)
Inventor
Richard Ambros
Hermann Ettinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zipp Werk GmbH
Original Assignee
Zipp Werk GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zipp Werk GmbH filed Critical Zipp Werk GmbH
Application granted granted Critical
Publication of US3522638A publication Critical patent/US3522638A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/24—Details
    • A44B19/26—Sliders
    • A44B19/30—Sliders with means for locking in position
    • A44B19/308—Sliders with means for locking in position in the form of a spring-actuated locking member actuated by the pull member
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/25—Zipper or required component thereof
    • Y10T24/2561—Slider having specific configuration, construction, adaptation, or material
    • Y10T24/2566—Slider having specific configuration, construction, adaptation, or material including position locking-means attached thereto
    • Y10T24/257—Slider having specific configuration, construction, adaptation, or material including position locking-means attached thereto having surface engaging element shifted by reorientation of pull tab
    • Y10T24/2571—Resilient or spring biased element
    • Y10T24/2577—Biased by distinct spring

Definitions

  • a slider for a slide-fastener stringer in which the upper shield member, which is joined to the lower shield member by a wedge-shaped core, is provided with a recess in which a rectangular locking pawl is disposed.
  • a well in the core receives a spring which bears against the locking pawl to urge the latter against a camming eccentric of the handle flap to force a tooth at the other end of the locking pawl into engagement with the coupling elements through a window in the upper shield member.
  • the flap when swung about its pivot, cams the locking pawl against the spring force and about a fulcrum on the upper shield member to withdraw the tooth in the deadcenter position of the eccentric cam. Off the deadcenter position, the spring retains the flap and the locking pawl in their locking positions.
  • Our present invention relates to separable slide fasteners and, more particularly, to a locking slider for a slidefastener stringer.
  • Separable slide fasteners are currently in widespread use and, generally, comprise a slide-fastener stringer whose slider is shiftable along a pair of interengageable coupling elements to interconnect and separate in accordance with the direction of movement of the slider.
  • the coupling elements which can be continuous syntheticresin coils or a chain of individual coupling members of synthetic resin or metal, are mounted upon respective support tapes so as to form slide-fastener heads which, in turn, may be provided at the ends of the coupling elements with so-called end-stop members designed to prevent the slider from being removed from the coupling elements.
  • the sliders of such devices usually include an upper and a lower shield interconnected by a core of Wedgeshaped configuration subdividing the interior of the slider into a pair of channels which merge at the tail of the slider, i.e. at the trailing portion thereof with respect to the direction of movement of the slider in the fastenerclosing direction.
  • Such sliders are commonly provided with flaps, tongues, or other members adapted to be gripped easily by the user for drawing the slider to and fro along the the stringer. It has also been a common practice to provide such sliders with locking elements which engage between coupling heads of the coupling elements to prevent movement of the slider until the handle flap is lifted to release the locking arrangement.
  • Such slide fasteners are often provided for trousers, shoes, corsets, and the like, inasmuch as they prevent the considerable lateral stress on the slide fastener from independently opening the system.
  • These locking devices have in the past included a lock ing pawl constituting part of the handle flap and passing through a window or aperture in the upper shield member of the slider and engageable with one of the coupling elements when the handle flap is pushed toward the shield member.
  • a lock ing pawl constituting part of the handle flap and passing through a window or aperture in the upper shield member of the slider and engageable with one of the coupling elements when the handle flap is pushed toward the shield member.
  • the pawl or tooth is withdrawn and the slider may be shifted.
  • These units may also include a spring adapted to hold the handle flap ice and the pawl which is unitary therewith in its locked position.
  • Another object of this invention is to provide a locking slider for a slide-fastener closure which is particularly resistant to opening and is thus highly desirable for shoes, trousers and corsets.
  • the slider of the present invention comprises, as is usual in such structures, an upper shield member and a lower shield member joined together by a wedge-shaped core defining within the slider the merging channels through which the coupling elements pass.
  • the present system includes a locking pawl in the form of a tonguelike lever which is structurally independent of the flap and is received in the upper shield member, While being spring-biased such that an inwardly bent tooth of the pawl passes through a window or aperture in the upper shield member into engagement with the coupling elements upon which the slider is shiftable.
  • this locking pawl there is provided a handle flap whose pivot is close to the locking pawl and which is formed with an eccentric cam held by the spring-biased locking pawl in the locked position of the device but swingable about this pivot to cam the locking pawl against its biasing spring and withdraw the tongue from engagement with the coupling element.
  • the locking pawl is provided with a pair of fulcra between the biasing spring which acts upon one end of the locking pawl and the tongue or tooth formed at the other end.
  • One fulcrum is provided by the eccentric which has a deadcenter position in which the locking pawl is withdrawn from engagement 'with the Icoupling element. On one side of this deadcenter position, the spring urges the locking pawl against the cam which then serves as the fulcrum and swings the pawl into engagement with the coupling element.
  • the upper shield member is provided with an outwardly open recess accommodating the generally flat locking pawl and at least partially enclosing the handle flap when the latter is in its locked position. Furthermore, we provide a blind well in the upper shield member and the wedge-shaped core member to accommodate a compression-type helical coil spring which bears upon an end of the pawl. Between this well or chamber and the window or aperture through which the locking tooth passes, we provide a second fulcrum in the form of a ramplike surface extending from the spring compartment to a fulcrum edge disposed between the pivot of the handle and the window or aperture.
  • the handle flap may be removably mounted in a pair of journal lu-gs which are bifurcated to allow slight spreading for insertion and removal of the handle flap.
  • the sheet-metal stamped locking pawl which is substantially flat and can be composed of spring steel, may be withdrawn and replaced.
  • the locking pawl may itself hav a window through which the journal lug passes and which is held in place by the handle flap. It will be understood, however, that a pair of such lugs may be provided and may cooperate with a central boss of the handle flap rather than a bifurcated structure.
  • the arrangement of the present invention has been found to be totally unaffected by the problems which have plagued arrangements in which the pawl is mounted upon the handle flap, provides firm and positive locking, and facilitates repair and replacement of the several parts.
  • FIG. 1 is a plan view of a slider according to the present invention
  • FIG. 2 is a cross-sectional view taken along the line III I of FIG. 1;
  • FIG. 3 is a view similar to FIG. 2 with the parts thereof shown in another operating position;
  • FIG. 4 is a sectional view, partly in elevation, with the handle flap and locking pawl removed from the slider embodying this invention.
  • FIG. 5 is a cross-sectional view taken along the line V-V of FIG. 2.
  • a slider for a slider-fastener stringer of any conventional type which comprises a lower shield member 1, an upper shield member 2 and a core 3 of wedge-shaped configuration (see FIG. 4) intenconnecting the upper and lower shield members and unitarily molded from synthetic resin therewith.
  • the core member 3 defines within the slider a pair of channels 3a and 3b (FIG. 5) which merge at the trailing end 30 of the slider and have a collective width at the latter end which is less than the total of the width of the coupling elements so that the latter are interfitted as they traverse the slider.
  • the upper shield member is provided with a generally flat locking pawl 4 stamped from sheet metal and provided with a window 4a through which a journal block or lug 13 of the upper shield member can pass.
  • the rectangular locking pawl 4 is provided at its right-hand end (FIGS. 1, 2 and 5) with a downwardly turned tooth 5, shown in FIGS. 2 and 5 in a locking position.
  • the tooth 5 passes through a transverse aperture 1.1 (FIGS. 2 and 4) in the upper shield member and projects downwardly beneath the roof 2a of the channel within the slider to engage the coupling elements which lie in these channels.
  • a handle flap 7 is formed with a bifurcated end 7a straddling the lug 13 and is pivotally mounted therein by a pintle 7b bridging the cam-like eccentric lugs 8 which bear upon the locking pawl 4.
  • a locking spring 6 (FIGS. 1 through 3) is received within a well 9 in the upper shield member 2 and in the core 3 (see FIG. 4) and bears upwardly against the lefthand end of the locking pawl 4.
  • the latter thus constitutes a lever with a fulcrum at 8a against the cam lug 8 whereby the tooth 5 is urged in the clockwise sense through the aperture 11 and into looking engagement with the coupling elements.
  • Spring 6 is a compression-type helical coil spring which may be simply dropped into the well 9.
  • the upper shield member 2 is provided with a ramp 12 below the cam portions 8 and extending from the spring chamber 9 to a fulcrum edge 12:: located between the fulcrum 8a and the tooth 5.
  • the cams 8 are thus able to urge the left-hand end of the locking pawl 4 in the counterclockwise direction sense about the edge 12a and thereby swing the tooth 5 out of engagement with the coupling elements.
  • the journal lug 13 is bifurcated, as will be apparent from FIGS. 1 and 4, to allow the pintle 7b to be snapped out of the lug for mounting and dism'ounting of the Operating member 7. Furthermore, the generally flat locking pawl 4, which is bent only to form the tooth 5, may be removed or replaced simply by withdrawing the operating flap 7 and positioning the original or another locking pawl over the lug 13.
  • a locking slider for a slide-fastener stringer having a pair of coupling elements adapted to pass through said slider for connection and disconnection of the coupling elements upon movement of the slider in opposite directions therealong, said slider comprising a slider body formed with an upper shield member, a lower shield member and a core member interconnecting said shield members and defining therewith a pair of channels for said coupling elements said body being provided with a well open at said upper shield member in the region of said core member; a generally flat elongated locking pawl on said upper shield member formed at one end remote from said well with a tooth for engagement with at least one of the coupling elements in said slider, thereby looking said slider thereto, said locking pawl overlying said well at its other end; a compression coil spring bearing upon said other end of said pawl and received in said well; and a handle flap pivotally mounted on said upper shield member and provided with an eccentric cam swingable about its pivot axis and engageable with said locking pawl intermediate said well and said tooth and adapted to displace
  • a slider as defined in claim 2 wherein said upper shield member is provided with an aperture proximal to said one end of said locking pawl, said tooth extending through said aperture in a position of said pawl generally fiat against said upper shield member, said pawl being formed with a window receiving said lug, said flap being bifurcated and lying on opposite sides of said lug while bearing upon said pawl on said opposite sides, said upper shield member being formed with a generally flat ramp extending from said fulcrum to said well, said pawl resting against said ramp upon pivotal movement of said flap to swing said pawl about said fulcrum and withdraw said tooth from said coupling elements.
  • a locking slider for a slide-fastener stringer having a pair of coupling elements adapted to pass through said slider for connection and disconnection of the coupling elements upon movement of the slider in opposite directions therealong, said slider comprising a slider body formed with an upper shield member, a lower shield memher and a core member interconnecting said shield members and defining therewith a pair of channels for said coupling elements; a locking pawl on said upper shield member formed at one end with a tooth and spring biased into the interior of said slider for engagement with at least one of the coupling elements therein, thereby looking said slider thereto; and a handle flap pivotally mounted on said upper shield member and provided with a camming formation adapted to displace said locking pawl against its spring bias and withdraw said tooth from engagement with the coupling elements, said upper shield member being formed with at least one journal lug pivotally supporting said flap, said flap being provided with an accentric cam swingable about its pivot axis and engageable with said locking pawl, the spring bias of said locking pawl urging
  • said locking pawl is generally rectangular and is stamped from sheet metal, said locking pawl being substantially flat except for the region of said tooth and being formed with a window, said lug projecting through said window, said well and said aperture being formed within said recess.
  • a locking slider for a slide-fastener stringer having a pair of coupling elements adapted to pass through said slider for connection and disconnection of the coupling elements upon movement of the slider in opposite directions therealong, said slider comprising:
  • a slider body formed with an upper shield and a lower shield defining a pair of channels for said coupling elements
  • a generally fiat elongated locking pawl overlying said upper shield and formed at one end and with a downwardly turned tpoth, said body being formed with a well extending transversely to said locking pawl beneath the other end thereof and overlain by said other end of said' locking pawl;
  • a handle flap having a bifurcated end pivotally mounted on said lug andjflanking same, said flap being formed on opposite sides of said lug with eccentric camming formations engaging said locking pawl between said spring and said tooth and along a side of said locking pawl opposite said spring, said upper shield being formed with a fulcrum between said camming formations and said tooth enabling pivoting movement of said locking ,pawl under the control of said flap, said upper shield; being further provided with a recess formed with a rfamp between said well and said fulcrum and beneath said camming formations whereby said locking pagwl is pressed against said ramp upon swinging movement of said flap.

Landscapes

  • Slide Fasteners (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US761092A 1967-09-20 1968-09-20 Slide-fastener slider with locking pawl Expired - Lifetime US3522638A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1610472 1967-09-20

Publications (1)

Publication Number Publication Date
US3522638A true US3522638A (en) 1970-08-04

Family

ID=5681634

Family Applications (1)

Application Number Title Priority Date Filing Date
US761092A Expired - Lifetime US3522638A (en) 1967-09-20 1968-09-20 Slide-fastener slider with locking pawl

Country Status (13)

Country Link
US (1) US3522638A (da)
AT (1) AT299846B (da)
BE (1) BE720647A (da)
CH (1) CH471554A (da)
DE (1) DE1610472B1 (da)
DK (1) DK127157B (da)
ES (1) ES153952Y (da)
FR (1) FR1584649A (da)
GB (1) GB1182545A (da)
IE (1) IE32326B1 (da)
LU (1) LU56797A1 (da)
NO (1) NO120130B (da)
SE (1) SE347864B (da)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3813736A (en) * 1971-02-15 1974-06-04 Yoshida Kogyo Kk Automatically locking slider for zip fastener
US4069556A (en) * 1975-12-16 1978-01-24 Yoshida Kogyo K.K. Automatic lock slider
EP0682890A2 (en) 1990-04-12 1995-11-22 Ykk Corporation Lockable slide fastener slider

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10127313A (ja) * 1996-10-31 1998-05-19 Ykk Corp 自動停止装置付スライドファスナー用スライダー
JPH10127312A (ja) * 1996-10-31 1998-05-19 Ykk Corp 停止装置付スライドファスナー用スライダー
CN102845942B (zh) * 2012-10-02 2015-07-22 李甫文 止动式拉链头

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2289955A (en) * 1941-10-24 1942-07-14 Conmar Prod Corp Locking slider for slide fasteners
US2397693A (en) * 1945-01-26 1946-04-02 Conmar Prod Corp Automatic lock slider
US2487386A (en) * 1945-05-01 1949-11-08 Conmar Prod Corp Automatic lock slider
US2520496A (en) * 1946-02-15 1950-08-29 Charles K Deutsch Slider for slide fasteners
FR1078005A (fr) * 1953-06-03 1954-11-15 Dispositif de verrouillage pour coulisseau destiné aux fermetures à glissière
US3270535A (en) * 1964-01-22 1966-09-06 Yoshida Kogyo Kk Lockable sliders for zipper-fasteners

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE648831C (de) * 1937-08-11 Ernst Piezug Feststellbarer Reissverschlussschieber
FR965225A (da) * 1950-09-06
US1778338A (en) * 1929-10-16 1930-10-14 Prentice G E Mfg Co Slider for fasteners
US2048636A (en) * 1934-05-26 1936-07-21 Hookless Fastener Co Separable fastener slider
DE736364C (de) * 1940-02-24 1943-06-12 Bickford & Co Ag Schieber fuer Reissverschluesse
GB556972A (en) * 1942-04-27 1943-10-29 Talon Inc Improvements in or relating to sliding clasp fasteners
US2358726A (en) * 1943-10-08 1944-09-19 Louis H Morin Automatic lock slider
DE837832C (de) * 1947-03-31 1952-05-02 Lightning Fasteners Ltd Schieber fuer Reissverschluesse
DE853887C (de) * 1950-10-12 1952-10-30 William Prym Fa Selbsttaetig sperrender Reissverschlussschieber
US3121930A (en) * 1962-01-31 1964-02-25 Louis H Morin Hold-open automatic lock sliders

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2289955A (en) * 1941-10-24 1942-07-14 Conmar Prod Corp Locking slider for slide fasteners
US2397693A (en) * 1945-01-26 1946-04-02 Conmar Prod Corp Automatic lock slider
US2487386A (en) * 1945-05-01 1949-11-08 Conmar Prod Corp Automatic lock slider
US2520496A (en) * 1946-02-15 1950-08-29 Charles K Deutsch Slider for slide fasteners
FR1078005A (fr) * 1953-06-03 1954-11-15 Dispositif de verrouillage pour coulisseau destiné aux fermetures à glissière
US3270535A (en) * 1964-01-22 1966-09-06 Yoshida Kogyo Kk Lockable sliders for zipper-fasteners

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3813736A (en) * 1971-02-15 1974-06-04 Yoshida Kogyo Kk Automatically locking slider for zip fastener
US4069556A (en) * 1975-12-16 1978-01-24 Yoshida Kogyo K.K. Automatic lock slider
EP0682890A2 (en) 1990-04-12 1995-11-22 Ykk Corporation Lockable slide fastener slider

Also Published As

Publication number Publication date
NO120130B (da) 1970-08-31
SE347864B (da) 1972-08-21
AT299846B (de) 1972-07-10
BE720647A (da) 1969-02-17
ES153952U (es) 1970-03-16
IE32326B1 (en) 1973-06-27
IE32326L (en) 1969-03-20
DK127157B (da) 1973-10-01
ES153952Y (es) 1970-12-01
FR1584649A (da) 1969-12-26
LU56797A1 (da) 1968-11-22
DE1610472B1 (de) 1976-08-19
GB1182545A (en) 1970-02-25
CH471554A (de) 1969-04-30

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