US3226789A - Lock sliders for zippers - Google Patents

Lock sliders for zippers Download PDF

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Publication number
US3226789A
US3226789A US412898A US41289864A US3226789A US 3226789 A US3226789 A US 3226789A US 412898 A US412898 A US 412898A US 41289864 A US41289864 A US 41289864A US 3226789 A US3226789 A US 3226789A
Authority
US
United States
Prior art keywords
cams
slider
pull tab
coil
convolutions
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
US412898A
Other languages
English (en)
Inventor
John E Burbank
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.)
Scovill Inc
Original Assignee
Scovill Inc
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
Priority to BE672465D priority Critical patent/BE672465A/xx
Application filed by Scovill Inc filed Critical Scovill Inc
Priority to US412898A priority patent/US3226789A/en
Priority to GB46417/65A priority patent/GB1075306A/en
Priority to NL6514918A priority patent/NL6514918A/xx
Priority to CH1607565A priority patent/CH450783A/fr
Priority to DE19651610426 priority patent/DE1610426B1/de
Priority to ES0319917A priority patent/ES319917A1/es
Application granted granted Critical
Publication of US3226789A publication Critical patent/US3226789A/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
    • 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
    • A44B19/305—Sliders with means for locking in position in the form of a locking prong protuding from 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
    • Y10T24/2518—Zipper or required component thereof having coiled or bent continuous wire interlocking surface
    • 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
    • Y10T24/2568—Protrusion on pull tab directly engaging interlocking surfaces

Definitions

  • This invention relates to lock sliders for zipper fasteners of the plastic filament type, wherein the filament is usually in the form of a coil which is somewhat flattened and modified in shape to provide heads for interlocking with heads of another coil.
  • An object of this invention is to provide an improved lock slider for zippers of the plastic filament type which will overcome the drawbacks to sliders.
  • the slider of my invention provides a gripping or binding effect on a plurality of such convolutions of both coils, which convolutions derive mutual support from each other and from adjacent portions of the fastener.
  • a plurality of sidewise acting cams or the like are provided on the pull tab, and these cams are so constructed and arranged that they will grip around the outer ends of the plastic filament elements thereby causing the chain to jam together and constrict their passage through the Y-shaped branches of the slider channel.
  • the individual elements are constrained so that they will abut against the slider neck to prevent their exit from the slider in a more positive way, than mere reliance on friction.
  • Another object of the invention is to provide an improved lock slider especially for coil type zippers, which is adaptable for a double or a reversible lock, where there is a pull tab on each side of the slider adapted for alternate use as in reversible coats.
  • a still further object of the invention is to provide a lock .sliderwherein the locking projections or cams on the pull tab supported against sidewise deformation when in locked position by the flanges of the slider.
  • FIG. 1 is a front view of a zipper of the plastic filament type for which my invention is especially suited;
  • FIG. 2 is also a front view on an enlarged scale with the top of the slider removed and with the elements shown in their normal unlocked position;
  • FIG. 3 is a view similar to FIG. 2 except that the elements are shown in their locked position and the locking cam in horizontal section;
  • FIG. 4 is a bottom plan view of the pull tab with its locking cams
  • FIG. 5 is an end view of the pull tab
  • FIG. 6 is a vertical cross-section on line-6-6 of FIG. 3;
  • FIG. 7 is a vertical longitudinal section on line 77 of FIG. 6;
  • FIG. 8 is a view similar to FIG. 3 showing a modified shape of the locking cams
  • FIG. 9 is a vertical section similar to FIG. 7 showing the invention as embodied in a double pull or reversible type zipper.
  • FIG. 10 is a perspective view of another shape of cam.
  • the zipper fastener illustrated in the drawing has a pair of fastener elements 11 and 12 of the plastic filament type, each of which is in the shape of a flattened coil with spaced convolutions, each convolution having a head end 13 adapted to interlock between a pair of convolutions of the mating coil and a heel end 14 which as seen in FIG. 6, is of rounded shape transversely of the fastener.
  • end stops may be provided.
  • the top portion of the fastener is not shown, but there is indicated in FIG. 1 a separable bottom stop 15.
  • the slider body is of a common type having a front Wing 16 and a back wing 17. Either or both of these wings may be provided with side flanges and as herein shown, the front wing has comparatively deep uninterrupted flanges 18 while the back wing has only shallow flanges 19.
  • the front and back wings are united at their wider ends by an integral neck 20.
  • the wings, neck and flanges form a slider channel with a pair of divergent upper branches merging into or joining a single lower branch.
  • the pull tab 21 has spaced arms 22 and 23 with trunnions 24 extending into a recessed lug 25 on the front wing to form a pivotal mounting for the pull tab.
  • the front wing has apertures 26 and 27 on opposite sides of the pivotal mounting and the outer edges of these apertures are preferably in alignment with the inner surfaces of the guide flanges 18 at the juncture of the branches of the slider channel.
  • slider locking cams 28 and 29 are slider locking cams 28 and 29. These cams extend from the free end of the tab which is slightly beyond the pivotal axis, along the length of the pull tab for a substantial distance. While the outer sides of the cams are vertical, their inner sides are relieved as indicated at 30 and 31, so that they have relatively thick and deep portions 32 in the region of the pivotal axis and taper away from the thicker and deeper portions.
  • the cams 28 and 29 are aligned with the apertures 26 and 27, respectively, so that when the pull tab is swung down against the slider, the cam will wedge over the heel ends 14 of the fastening elements and squeeze the coil convolutions inwardly toward each other. In this action and while in locked position, the cams are supported against sidewise stress by the flanges 18.
  • the coils inside the slide assume some such position as shown in FIG. 3.
  • the upper branches of the channel are constricted between the thicker portions 32 of the cams and the slider neck 20.
  • one or more of the head ends 13 of the coil convolutions will lodge under the slider neck as seen in FIG. 3 to provide a more positive locking.
  • FIG. 8 there is shown a slightly modified form of cam in which the inside faces do not taper smoothly from the side and to the thin end, but may have one or more bumps or projections 33 on their inner surfaces. These would be intended to project slightly into the spaces between the heel ends of the fastening elements.
  • the cam is shown as having irregularities in the form of ridges 34 which may extend across the bottom edge of the cam and the inner side surfaces. Any such irregularities or roughening of these surfaces, especially in the region of the pivot, will assist in dragging or. pulling the tab into locked position after its initial engagement with the fastening elements whenever a sidewise pull is placed npon the zipper.
  • the invention is shown as embodied in a reversible lock slider in FIG. 9.
  • the cams preferably have some such configuration as those shown in FIG. 10 and both the cam 37 on the pull tab 35 and the cam 38 on the pull tab 36 are constructed so that they will leave a small space indicated at 39 to accommodate the zipper tape which is designated 40 in FIGS. 1, 2, 3, 6 and 8.
  • both cams are alike and thus neither of them will extend half way around the heel ends of the fastening elements.
  • a pair of fastening elements of the plastic filament type each of which is in the shape of a flattened coil with spaced convolutions, each convolution having a head end adapted to interlock between a pair of convolutions of the mating coil and a heel end of rounded shape transversely of the fastener,
  • a slider having front and back wings, a neck uniting said wings at one end, uninterrupted guide flanges at the lateral edges of at least one of said wings, which guide flanges ride over said heel ends of the coils, said wings, neck and flanges forming a slider channel wih a pair of divergent upper branches joining a single lower branch, a rectangular pull tab having spaced apart arms pivotally mounted on said front wing, said front wing having apertures on opposite sides of the pull tab pivotal mounting, the outer edges of said apertures being substantially in alignment with said guide flanges at the juncture of said channel branches, and
  • each of said cams having a relatively thick and deep portion in the region of the pivot axis, the inner or opposed faces of said cams being relieved both vertically and horizontally of the pull tab so that each cam is generally tapering in both directions away from said relatively thick portion, whereby in locked position the cams will wedge over the heel ends of a plurality of coil convolutions of each coil, said relatively thick and deep portions of the cams serving to force the pull tab into locking position when a tearing stress is applied to the zipper in the region of the slider, after initial engagement of such portions with one or more coil convolutions.

Landscapes

  • Slide Fasteners (AREA)
  • Basic Packing Technique (AREA)
US412898A 1964-11-23 1964-11-23 Lock sliders for zippers Expired - Lifetime US3226789A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BE672465D BE672465A (enrdf_load_html_response) 1964-11-23
US412898A US3226789A (en) 1964-11-23 1964-11-23 Lock sliders for zippers
GB46417/65A GB1075306A (en) 1964-11-23 1965-11-02 Improvements in or relating to a sliding clasp fastener
NL6514918A NL6514918A (enrdf_load_html_response) 1964-11-23 1965-11-17
CH1607565A CH450783A (fr) 1964-11-23 1965-11-22 Fermeture à glissières
DE19651610426 DE1610426B1 (de) 1964-11-23 1965-11-22 Sperrschieber fuer einen Reissverschluss
ES0319917A ES319917A1 (es) 1964-11-23 1965-11-23 Un dispositivo de cierre de cursor.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US412898A US3226789A (en) 1964-11-23 1964-11-23 Lock sliders for zippers

Publications (1)

Publication Number Publication Date
US3226789A true US3226789A (en) 1966-01-04

Family

ID=23634927

Family Applications (1)

Application Number Title Priority Date Filing Date
US412898A Expired - Lifetime US3226789A (en) 1964-11-23 1964-11-23 Lock sliders for zippers

Country Status (7)

Country Link
US (1) US3226789A (enrdf_load_html_response)
BE (1) BE672465A (enrdf_load_html_response)
CH (1) CH450783A (enrdf_load_html_response)
DE (1) DE1610426B1 (enrdf_load_html_response)
ES (1) ES319917A1 (enrdf_load_html_response)
GB (1) GB1075306A (enrdf_load_html_response)
NL (1) NL6514918A (enrdf_load_html_response)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539730A (en) * 1983-08-22 1985-09-10 Albany International Corp. Seaming means and a tool for forming the seam
US5745960A (en) * 1996-06-18 1998-05-05 Walrus, Inc. Zipper apparatus and method facilitating maintenance and repair

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972793A (en) * 1956-06-19 1961-02-28 Cue Fasteners Inc Slider for slide fasteners
US3018534A (en) * 1959-06-10 1962-01-30 Scovill Manufacturing Co Lock slider for zipper fastener

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE595186C (de) * 1934-04-03 Stock & Co Feststellbarer Schieber fuer Reissverschluesse
US1794139A (en) * 1927-05-04 1931-02-24 Mishawaka Rubber & Woolen Mfg Slider-operated fastener
US1734405A (en) * 1928-07-02 1929-11-05 Shipman George Harold Clifford Separable fastener
AT127078B (de) * 1928-09-26 1932-02-25 Martin Dr Winterhalter Schieber für Reißverschlüsse mit schwenkbarer Handhabe.
US2193080A (en) * 1938-03-22 1940-03-12 Waldes Kohinoor Inc Slider for separable fasteners
US2240048A (en) * 1939-04-08 1941-04-29 Whitehall Patents Corp Semiautomatic lock slider
US2270068A (en) * 1939-09-07 1942-01-13 Marinsky Davis Safety pin lock slider
US2677163A (en) * 1950-10-11 1954-05-04 Talon Inc Slider for slide fasteners
DE949642C (de) * 1952-06-05 1956-09-27 Lightning Fasteners Ltd Schieber fuer zweiseitig verwendbaren Reissverschluss
US2864146A (en) * 1954-03-29 1958-12-16 Louis H Morin Automatic spring pin lock slider operatable from both sides
US2880489A (en) * 1954-07-02 1959-04-07 Cue Fastener Inc Locking-type slider for slide fasteners
DE1039963B (de) * 1955-06-29 1958-10-02 Opti Werk G M B H & Co Schieber fuer Schraubenfeder-Reissverschluesse
US3112546A (en) * 1962-01-08 1963-12-03 Prentice G E Mfg Co Pin lock for separable fastener slider

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972793A (en) * 1956-06-19 1961-02-28 Cue Fasteners Inc Slider for slide fasteners
US3018534A (en) * 1959-06-10 1962-01-30 Scovill Manufacturing Co Lock slider for zipper fastener

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539730A (en) * 1983-08-22 1985-09-10 Albany International Corp. Seaming means and a tool for forming the seam
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

Also Published As

Publication number Publication date
ES319917A1 (es) 1966-05-16
CH450783A (fr) 1968-01-31
GB1075306A (en) 1967-07-12
DE1610426B1 (de) 1970-12-17
BE672465A (enrdf_load_html_response)
NL6514918A (enrdf_load_html_response) 1966-05-24

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