CA1048743A - Bridge top stop for slide fasteners - Google Patents
Bridge top stop for slide fastenersInfo
- Publication number
- CA1048743A CA1048743A CA74216123A CA216123A CA1048743A CA 1048743 A CA1048743 A CA 1048743A CA 74216123 A CA74216123 A CA 74216123A CA 216123 A CA216123 A CA 216123A CA 1048743 A CA1048743 A CA 1048743A
- Authority
- CA
- Canada
- Prior art keywords
- rims
- reinforced
- bridge top
- top stop
- flanges
- 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
Links
Classifications
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B19/00—Slide fasteners
- A44B19/24—Details
- A44B19/36—Means for permanently uniting the stringers at the end; Means for stopping movement of slider at the end
Landscapes
- Slide Fasteners (AREA)
- Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A bridge top stop having a pair of flanged rims projecting outwardly in parallel spaced relationship from an inverted U-shaped member. The flanged rims are each of constant width throughout the full length thereof. For mounting the bridge top stop adjacent the upper ends of a pair of slide fastener stringers, the flanged rims are compressed toward each other for gripping engagement of the opposed reinforced edge portions of the stringer tapes.
The compression is effected such that it results in the spacing between the flanges of the rims being greater at the area of the base of the "U"-shape, as comapred with the spacing at the two arm sections of the "U"
wherein the tapes are engaged, whcih results in an improved uniformity of grip between the stop and the fastener, without subjecting the reinforced edges of the tape to an undue, weakening deep penetration by the flanges of the rims. The central or base section of the "U" is reinforced to provide counteraction to the rim-spreading-apart forces present at the base of the "U"
due to resiliency of the reinforced edges of the fastener.
A bridge top stop having a pair of flanged rims projecting outwardly in parallel spaced relationship from an inverted U-shaped member. The flanged rims are each of constant width throughout the full length thereof. For mounting the bridge top stop adjacent the upper ends of a pair of slide fastener stringers, the flanged rims are compressed toward each other for gripping engagement of the opposed reinforced edge portions of the stringer tapes.
The compression is effected such that it results in the spacing between the flanges of the rims being greater at the area of the base of the "U"-shape, as comapred with the spacing at the two arm sections of the "U"
wherein the tapes are engaged, whcih results in an improved uniformity of grip between the stop and the fastener, without subjecting the reinforced edges of the tape to an undue, weakening deep penetration by the flanges of the rims. The central or base section of the "U" is reinforced to provide counteraction to the rim-spreading-apart forces present at the base of the "U"
due to resiliency of the reinforced edges of the fastener.
Description
1~48743 This invention relates generally to slide fas-teners, and more specifically to an end fitting, generally known as a bridge top stop, which is intended to connect and maintain in predetermined slightly spaced relationship the upper ends of the stringer tapes of a slide fastener just above the rows of interlocking fastener elements. The slide fasteners of this type are generally applied to garment plackets, bag openings, and other closure openings where it is required that both ends of the closure opening be closed.
Bridge top stops as heretofore constructed usually include a pair of tape gripping por~ions, with a recessed or narrowed connecting mid-portion therebetween. According to this prior art construction, the beaded or reinforced edges of a pair of stringer tapes become substantially ex-posed through the recessed mid-portion of the bridge top stop as the latter is mounted in position on the stringer tapes with its tape gripping portions engaging the respec~
tive reinforced edges of the tapes. The bridge top stop mounted in this manner is very insecure at its recessed mid-portion, the portion being unable to engage the reinforcededges of the stringer tapes.
Therefore, as the slider of the slide fastener repeatedly strikes against the bridge top stop in the use of the fastener, the top stop tends to displace upwardly along the reinforced tape edges. The kridge top stop of the prior art construction is also very likely to become displaced or deformed when the stringer tapes are subjected to forces tending to pull the same apart from each other.
Bridge top stops as heretofore constructed usually include a pair of tape gripping por~ions, with a recessed or narrowed connecting mid-portion therebetween. According to this prior art construction, the beaded or reinforced edges of a pair of stringer tapes become substantially ex-posed through the recessed mid-portion of the bridge top stop as the latter is mounted in position on the stringer tapes with its tape gripping portions engaging the respec~
tive reinforced edges of the tapes. The bridge top stop mounted in this manner is very insecure at its recessed mid-portion, the portion being unable to engage the reinforcededges of the stringer tapes.
Therefore, as the slider of the slide fastener repeatedly strikes against the bridge top stop in the use of the fastener, the top stop tends to displace upwardly along the reinforced tape edges. The kridge top stop of the prior art construction is also very likely to become displaced or deformed when the stringer tapes are subjected to forces tending to pull the same apart from each other.
- 2 -11)'3~7~3 It is, therefore, a principal object of this invention to provide an improved bridge top stop which can be positively anchored in position on a pair of stringer tapes practically against any possibility of displacement or deformation in spite of the severe working conditions that may be imposed thereon in the use of the complete slide fastener.
Another object of the invention is to provide a bridge top stop which is simple in construction, economical of manufacture, and easy to attach to stringer tapes.
According to the invention, there is provided, in a slide fastener including a pair of stringer tapes each having a reinforced edge opposing that of the other tape and carrying a row of fastener elements, a bridge top stop mounted adjacent the upper ends of said stringer tapes to interconnect the same in predetermined relationship, said bridge top stop being generally inverted-U-shaped to comprise two generally parallel arm sections and a base section interconnecting said arm sections, a p?ir of elongated peripheral rims projecting in a generally symmetrical spaced relationship from said inverted U-shaped member throughout the full length thereof, said rims being each of constant width throughout the full length thereof, said rims thus forming an elongate peripheral channel, and a pair of flanges each formed along the edge of the respective rim, the flanges protruding generally transversely inwardly of said channel, said rims being compressed toward each other for gripping engagement of the reinforced edges of said stringer tapes, major portions of the respective flanges being in a gripping engagement with respective portions of the tapes adjacent the reinforced edges gripped ~ 3 r~'7~
by said rims, a minor portion of the respective flanges being in a gripping engagement with the respective reinforced edges in an area generally coincident with said base section, the spacing between -the respective flanges at said minor portion being greater than that at said major portions, whereby said gripping engagement with said respective portions of the tapes is generally uniform throughout the entire length of the respective major portions.
According to another feature of the present invention, the thickness of said base section as measured in the direction perpendicular to a plane defined by the inverted-U shape, is greater than the thickness of said arm sections as measured in the same direction, whereby said base section is reinforced.
The features which are believed to be novel and characteristic of this invention are set forth in particular in the claims appended hereto. The invention itself, how-ever, both as to its construction and functioning, together - 3a -1~87~3 with the further objects and advantages thereof, will be best understood -from the following description of a preferred em-bodiment, with reference had to the accompanying drawings in which like reference characters denote corresponding parts S of the several views, and wherein;
Fig. 1 is a fragmentary plan view of a slide fas-tener incorporating a preferred form of the bridge top stop according to this invention;
Fig. 2 is a perspective view of the bridge top stop shown in Fig. 1~ the bridge top stop being illustrated in a condition before being mounted on the stringer tapes of the slide fastener;
Fig. 3 is a sectional view taken along the plane of line III-III in Fig. 2;
Fig. 4 is a fragmentary perspective view of the slide fastener shown in Fig. l; and Fig. S is a sectional view taken along the plane of line V-V in Fig. 4.
In Fig. 1 the improved bridge top stop according to the invention is shown applied to a slide fastener of well known organization. The illustrated slide fastener comprises a pair of stringers having flexible stringer tapes 10 the opposed longitudinal edges of which are beaded or reinforced as designated by the numeral 11. Carried on the respective reinforced edges 11 of the stringer tapes 10 are rows of uniformly spaced interlocking fastener elements 12 which are ~ -clamped or otherwise secured thereto in a known manner. A
slider 13 is slidable along the rows of fastener elements 12 ~.
1~41~7~3 for progressively engaging and clisengaging the same, tha-t is, for closing and opening the fastener.
Shown at 14 is the bridge top stop according to the invention. The bridge top stop 14 is secured to and between the reinforced edges 11 of the stringer tapes 10 to connect and maintain the upper ends of the tapes, just above the rows of interlocking fastener elements 12, in predetermined slightly spaced relationship.
Figs. 2 and 3 illustrate in greater detail the con-figuration of the bridge top stop 14 in a condition beforebeing mounted in position on the slide fastener. As will be seen from these drawings, the bridge top stop 14 comprises an internal, inverted U-shaped member 15, and a pair of jaws or rims 16 projecting outwardly in parallel spaced relationship from the U-shaped member 15 throughout the full length thereof.
The rims 16 have inwardly directed flanges 17 along their ex-ternal edges.
It is important to note that each flanged rim 16 is of constant width throughout the complete length thereof.
While the flanged rims 16 are shown spread apart from each other in Figs. 2 and 3, it will be apparent that they are intended to be compressed toward each other for gripping or clamping engagement of the reinforced edge portions of the stringer tapes 10 when the bridge top stop is mounted at or adjacent the upper end of the slide fastener.
Referring back to Fig. 1, the bridge top stop 14 of the above described configuration is mounted in position on the slide fastener by having the flanges 17 of its rims 16 1~48743 pressed against the stringer tapes 10, just beyond their reinforced edges 11, and against the reinforced edges them-selves. Thus, in the mid-portion of the bridge top stop 14 the flanged rims 16 firmly grip the reinforced edges 11 of the stringer tapes 10 arranged in close side-by-side relation-ship, so that there is practically no possibility of the bridge top stop suffering any displacement in the use of the slide fastener.
In case the reinforced edges 11 of the stringer tapes 10 are of significantly greater thickness than the plain tape portions, a compressing pressure should preferably be selectively applied to the flanged rims 16 oE the bridge top stop 14 so that the latter will have slightly elevated portîons 18 directly above, and below, the reinforced edges 11, as will be best understood from Figs. 4 and 5. It is possible in this manner to prevent the flanges 17 of the elevated portions 18 from biting too deeply into the thick reinforced edges llo It will be apparent from the foregoing description that even though the slider 13 may repeatedly strike against the bridge top stop 14 at the end of its fastener closing movement along the rows of interlocking fastener elements 12 in the use of the slide fastener, the bridge top stop can be held securely supported against displacement or distortion.
Furthermore, even when the stringer tapes 10 are pulled apart from each other, the bridge top stop will not be strained because its flanged rims 16 are of constant width throughout the full length thereof, with no SUC}l recesses in its '7~3 mid-portion as has been formed in the prior art bridge top stops. The bridge top stop according to the invention is therefore certain to remain in service for a materially ex-tended length of time in spite of the severe working condi-tions in the use of the complete slide fastener.
Having thus described the bridge top stop according to the invention, it is apparent that the objects as above stated have been fully accomplished. It is to be understood, however, that the specific forms and arrangements of the various parts of the slide fastener as herein disclosed are purely by-way of example, as the bridge top stop according to the invention is obviously applicable to other types of slide fasteners as well. Various modifications of the in~
vention may be resorted to by the specialists without depart-ing from the scope of the invention as expressed in thefollowing claims.
Another object of the invention is to provide a bridge top stop which is simple in construction, economical of manufacture, and easy to attach to stringer tapes.
According to the invention, there is provided, in a slide fastener including a pair of stringer tapes each having a reinforced edge opposing that of the other tape and carrying a row of fastener elements, a bridge top stop mounted adjacent the upper ends of said stringer tapes to interconnect the same in predetermined relationship, said bridge top stop being generally inverted-U-shaped to comprise two generally parallel arm sections and a base section interconnecting said arm sections, a p?ir of elongated peripheral rims projecting in a generally symmetrical spaced relationship from said inverted U-shaped member throughout the full length thereof, said rims being each of constant width throughout the full length thereof, said rims thus forming an elongate peripheral channel, and a pair of flanges each formed along the edge of the respective rim, the flanges protruding generally transversely inwardly of said channel, said rims being compressed toward each other for gripping engagement of the reinforced edges of said stringer tapes, major portions of the respective flanges being in a gripping engagement with respective portions of the tapes adjacent the reinforced edges gripped ~ 3 r~'7~
by said rims, a minor portion of the respective flanges being in a gripping engagement with the respective reinforced edges in an area generally coincident with said base section, the spacing between -the respective flanges at said minor portion being greater than that at said major portions, whereby said gripping engagement with said respective portions of the tapes is generally uniform throughout the entire length of the respective major portions.
According to another feature of the present invention, the thickness of said base section as measured in the direction perpendicular to a plane defined by the inverted-U shape, is greater than the thickness of said arm sections as measured in the same direction, whereby said base section is reinforced.
The features which are believed to be novel and characteristic of this invention are set forth in particular in the claims appended hereto. The invention itself, how-ever, both as to its construction and functioning, together - 3a -1~87~3 with the further objects and advantages thereof, will be best understood -from the following description of a preferred em-bodiment, with reference had to the accompanying drawings in which like reference characters denote corresponding parts S of the several views, and wherein;
Fig. 1 is a fragmentary plan view of a slide fas-tener incorporating a preferred form of the bridge top stop according to this invention;
Fig. 2 is a perspective view of the bridge top stop shown in Fig. 1~ the bridge top stop being illustrated in a condition before being mounted on the stringer tapes of the slide fastener;
Fig. 3 is a sectional view taken along the plane of line III-III in Fig. 2;
Fig. 4 is a fragmentary perspective view of the slide fastener shown in Fig. l; and Fig. S is a sectional view taken along the plane of line V-V in Fig. 4.
In Fig. 1 the improved bridge top stop according to the invention is shown applied to a slide fastener of well known organization. The illustrated slide fastener comprises a pair of stringers having flexible stringer tapes 10 the opposed longitudinal edges of which are beaded or reinforced as designated by the numeral 11. Carried on the respective reinforced edges 11 of the stringer tapes 10 are rows of uniformly spaced interlocking fastener elements 12 which are ~ -clamped or otherwise secured thereto in a known manner. A
slider 13 is slidable along the rows of fastener elements 12 ~.
1~41~7~3 for progressively engaging and clisengaging the same, tha-t is, for closing and opening the fastener.
Shown at 14 is the bridge top stop according to the invention. The bridge top stop 14 is secured to and between the reinforced edges 11 of the stringer tapes 10 to connect and maintain the upper ends of the tapes, just above the rows of interlocking fastener elements 12, in predetermined slightly spaced relationship.
Figs. 2 and 3 illustrate in greater detail the con-figuration of the bridge top stop 14 in a condition beforebeing mounted in position on the slide fastener. As will be seen from these drawings, the bridge top stop 14 comprises an internal, inverted U-shaped member 15, and a pair of jaws or rims 16 projecting outwardly in parallel spaced relationship from the U-shaped member 15 throughout the full length thereof.
The rims 16 have inwardly directed flanges 17 along their ex-ternal edges.
It is important to note that each flanged rim 16 is of constant width throughout the complete length thereof.
While the flanged rims 16 are shown spread apart from each other in Figs. 2 and 3, it will be apparent that they are intended to be compressed toward each other for gripping or clamping engagement of the reinforced edge portions of the stringer tapes 10 when the bridge top stop is mounted at or adjacent the upper end of the slide fastener.
Referring back to Fig. 1, the bridge top stop 14 of the above described configuration is mounted in position on the slide fastener by having the flanges 17 of its rims 16 1~48743 pressed against the stringer tapes 10, just beyond their reinforced edges 11, and against the reinforced edges them-selves. Thus, in the mid-portion of the bridge top stop 14 the flanged rims 16 firmly grip the reinforced edges 11 of the stringer tapes 10 arranged in close side-by-side relation-ship, so that there is practically no possibility of the bridge top stop suffering any displacement in the use of the slide fastener.
In case the reinforced edges 11 of the stringer tapes 10 are of significantly greater thickness than the plain tape portions, a compressing pressure should preferably be selectively applied to the flanged rims 16 oE the bridge top stop 14 so that the latter will have slightly elevated portîons 18 directly above, and below, the reinforced edges 11, as will be best understood from Figs. 4 and 5. It is possible in this manner to prevent the flanges 17 of the elevated portions 18 from biting too deeply into the thick reinforced edges llo It will be apparent from the foregoing description that even though the slider 13 may repeatedly strike against the bridge top stop 14 at the end of its fastener closing movement along the rows of interlocking fastener elements 12 in the use of the slide fastener, the bridge top stop can be held securely supported against displacement or distortion.
Furthermore, even when the stringer tapes 10 are pulled apart from each other, the bridge top stop will not be strained because its flanged rims 16 are of constant width throughout the full length thereof, with no SUC}l recesses in its '7~3 mid-portion as has been formed in the prior art bridge top stops. The bridge top stop according to the invention is therefore certain to remain in service for a materially ex-tended length of time in spite of the severe working condi-tions in the use of the complete slide fastener.
Having thus described the bridge top stop according to the invention, it is apparent that the objects as above stated have been fully accomplished. It is to be understood, however, that the specific forms and arrangements of the various parts of the slide fastener as herein disclosed are purely by-way of example, as the bridge top stop according to the invention is obviously applicable to other types of slide fasteners as well. Various modifications of the in~
vention may be resorted to by the specialists without depart-ing from the scope of the invention as expressed in thefollowing claims.
Claims (2)
1. In a slide fastener including a pair of stringer tapes each having a reinforced edge opposing that of the other tape and carrying a row of fastener elements, a bridge top stop mounted adjacent the upper ends of said stringer tapes to interconnect the same in predetermined relationship, said bridge top stop being generally inverted-U-shaped to comprise two generally parallel arm sections and a base section interconnecting said arm sections, a pair of elongated peripheral rims projecting in a generally symmetrical spaced relationship from said inverted-U-shaped member throughout the full length thereof, said rims being each of constant width throughout the full length thereof, said rims thus forming an elongate peripheral channel, and a pair of flanges each formed along the edge of the respective rim, the flanges protruding generally transversely inwardly of said channel, said rims being compressed toward each other for gripping engagement of the reinforced edges of said stringer tapes, major portions of the respective flanges being in a gripping engagement with respective portions of the tapes adjacent the reinforced edges gripped by said rims, a minor portion of the respective flanges being in a gripping engagement with the respective reinforced edges in an area generally coincident with said base section, the spacing between the respective flanges at said minor portion being greater than that at said major portions, whereby said gripping engagement with said respective portions of the tapes is generally uniform throughout the entire length of the respective major portions.
2. A slide fastener as claimed in claim 1, wherein the thickness of said base section as measured in the direction perpendicular to a plane defined by the inverted-U shape, is greater than the thickness of said arm sections as measured in the same direction, whereby said base section is reinforced.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14532773 | 1973-12-18 | ||
| JP1973145327U JPS5435770Y2 (en) | 1973-12-18 | 1973-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1048743A true CA1048743A (en) | 1979-02-20 |
Family
ID=26476480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA74216123A Expired CA1048743A (en) | 1973-12-18 | 1974-12-16 | Bridge top stop for slide fasteners |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE823517A (en) |
| CA (1) | CA1048743A (en) |
| DE (1) | DE2459963C3 (en) |
| FR (1) | FR2254288B1 (en) |
| GB (1) | GB1451176A (en) |
| NL (1) | NL7416352A (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2063879A (en) * | 1934-11-21 | 1936-12-08 | Hookless Fastener Co | Slide fastener |
| US2261534A (en) * | 1940-09-16 | 1941-11-04 | Universal Slide Fastener Co In | Top stop for slide fasteners |
| GB560103A (en) * | 1942-09-16 | 1944-03-20 | Lightning Fasteners Ltd | Improvements in or relating to sliding clasp fasteners |
-
1974
- 1974-12-16 NL NL7416352A patent/NL7416352A/en active Search and Examination
- 1974-12-16 CA CA74216123A patent/CA1048743A/en not_active Expired
- 1974-12-16 GB GB5419174A patent/GB1451176A/en not_active Expired
- 1974-12-17 FR FR7441553A patent/FR2254288B1/fr not_active Expired
- 1974-12-18 DE DE19742459963 patent/DE2459963C3/en not_active Expired
- 1974-12-18 BE BE151645A patent/BE823517A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| AU7656574A (en) | 1976-06-24 |
| DE2459963C3 (en) | 1981-10-29 |
| NL7416352A (en) | 1975-06-20 |
| GB1451176A (en) | 1976-09-29 |
| FR2254288B1 (en) | 1978-12-22 |
| BE823517A (en) | 1975-04-16 |
| FR2254288A1 (en) | 1975-07-11 |
| DE2459963A1 (en) | 1975-06-19 |
| DE2459963B2 (en) | 1981-02-19 |
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