US2618829A

US2618829A - Slider for slide fasteners

Info

Publication number: US2618829A
Application number: US179038A
Authority: US
Inventors: Noel J Poux
Original assignee: Talon Inc
Current assignee: Talon Inc
Priority date: 1950-08-12
Filing date: 1950-08-12
Publication date: 1952-11-25
Anticipated expiration: 1969-11-25

Description

Nov. 25, 1952 N. J. Poux SLIDER FOR SLIDE FASTENERS Filed Aug. 12, 1950 izhmlz IiVVENTOR. NOEL J. POLJX ATTOQNEY Patented Nov. 25, 1952 SLIDER FOR SLIDE FASTENERS Noel J. Poux, Meadville, Pa., assignor to Talon, Inc., a corporation of Pennsylvania Application August 12, 1950, Serial No. 179,038

3 Claims. 1

This invention relates to slide fasteners, and particularly to an improvement in or a modification of the type of automatic lock slider described and claimed in the patent to Norton et al., No. 1,966,457, issued July 1'7, 1934.

The lock slider of the above mentioned patent has been used successfully for many years and is satisfactory for most purposes. In some applications of the fastener, however, for example in garments, a pendant or other decorative or ornamental device is oftentimes attached to the pull of the slider so as to be suspended therefrom. Such a pendant or device is sometimes relatively heavy and the weight thereof in such suspended position tends to move by a camming action the locking member to its unlocked position thereby causing the slider to be moved unintentionally along the fastener to open the same. Naturally, such a condition is undesirable for it defeats the purpose for which the lock on the slider is intended. It is to a means for preventing such accidental unlocking of the slider that the present invention relates.

Accordingly, it is the general object of this invention to provide an improved lock slider which, while retaining all of the advantages and functions of the slider of the Norton et a1. patent, will overcome the above mentioned difficulty.

It is a more specific object of the present invention to provide means incorporated with the aforementioned automatic lock slider which will function to hold the pull member in a suspended position out of operable engagement with the locking member whenever the pull is released.

It is another object of the invention to provide an improved automatic lock slider having means incorporated therewith for overcoming the aforementioned difliculty in a simple and effective manner, and yet which will not add materially to the cost of manufacture thereof.

Fig. 4 is a sectional view taken on line 4-4 of Fig. 1;

Fig. 5 is a sectional view taken on line 5-5 of Fig. 1;

Fig. 6 is a plan view of the slider body with the locking member and pull removed; and

Fig. 7 is a side view of the fastener, similar to Fig. 2, showing the locking member in its unlocked position.

Referring more particularly to the drawings, my improvement is shown illustrated with a conventional type slide fastener of the type disclosed in the aforesaid Norton et a1. patent, having a pair of stringer tapes 2 with a series of spacedapart interlocking fastener elements 3 attached to their adjacent edges. A slider body 4 is provided for longitudinal movement along the fastener for opening and closing the same, and comprises spaced-apart upper and lower wings or

plates

5 and 6, respectively, having flanges 1 along their marginal edges and connected together at one end by a neck portion 8 so as to provide a Y-shaped channel 9 between the

wings

5 and 6 through which the fastener elements are guided when the slider is manipulated to open I or close the fastener.

Various other objects and advantages of this On the outer side of the upper wing, there is arranged an elongated lug I0 upon which there is mounted a hollow sheet metal locking member I2 in the form of a cap which fits over and around the lug and has a top wall and side walls l3 and I4 and preferably end walls. This locking member is pivotally attached to the lug ID at the upper end thereof, as at l5, preferably by projections on the inner surfaces of the side walls which extend into indentations in the opposed side surfaces of the lug. In the top surface of the lug there is anchored therein, a leaf spring l8 which extends over the lug to the other side of the pivotal connection l5, with the extreme free end thereof bearing against the inner surface of the top wall of the locking member beyond the pivotal connection. On the free end of the locking member or that end opposite that from the pivotal connection, there is carried by the side wall I3, a locking projection or prong I?! which is preferably an extension of this side wall. This locking prong extends normally into and through an opening 20 in the top wing 5 of the slider body into the channel 9 thereof due to the action of the spring l8 which urges the looking prong into locking position between any adjacent pair of fastener elements 3 in a wellknown manner, as shown in Figs. 2, 3, and 4.

There is provided a pull tab 2| which may be 3 of a convenient form and, in the present instance, this pull tab is shown as being substantially U-shaped having inwardly extending

trunnion portions

22 and 23 which fit loosely in under the lower edges of the side walls I3 and M of the locking member so as to embrace the same and so as to be disposed to either side of the lug t and movable "relative to both the locking member and the lug. This pull tab is provided to manipulate the slider and when so used to open the fastener the trunnions engage an inclined surface 24 on the inner side of the locking prong IQ of the side Wall l3, as shown in Fig. '7, thereby moving the locking prong out of engagment with the fastener elements.

According to the present invention, there is carried by the pull tab 2| adjacent each 'of the

trunnion portions

22 and 23 thereof, hook-like projecting

portions

25 and 26, respectively, which are adapted to extend normally into

corresponding openings

21 and 28, respectively, in the top wing of the slider body with one arranged to either side of the lug 10, as shown in Fig.6. These projecting portions are adapted to-hook over the lower edged the openings 2] and 28, as shown in Figs. 2. and 5, when the pull tab is released so as-to hold thepull tab'and the pendant '29 or other decorative device attached thereto in a suspended position with the trunnion portions out of engagement with the inclined surface 24 of the side wallof the locking member thereby preventing the weight of the pendant from operating on the locking'member tending to move the locking member out of its locked position. It will be understood that the bottom sides of the

openings

21 and 28 are positioned -a distance from the locking prong I 9 just sufiicient to keep the trunnion from contacting the inclined surface 25 when the projections '25 and 28 are positioned in their'corresponding openings 2? and 28 so that the trunnions cannot act to tend to move the locking'memberto its unlocked position. It will be seen that the lower edge of the side walls I B-and HI of thelocking member tends to urge and hold the projections '25 and 26 into their corresponding openings .21 and '28 due to the 'actionof the spring-l 8 when thefpull tab is released, asshown in Fig, 2-. k

-In operation when the fasteneris being opened, the pullta b will'be disposed, as shown in Fig. '1 of the drawings, with the slider being moved downwardly. In such position, it will be seen that the pull tab is raised slightly upwardly out of parallelism with the slider body so as to be disposed at a slight angle thereto. ln moving the pull tab to-such position, the

projections

25 and 26 are -moved out of their corresponding openings 2'! and 28 so as to permit the trunnion portion of the pull tab to engage the inclined surface 24 of the locking member thereby moving it out of engagement with the fastener elements. It is maintained in such position until the pull tab is released and it again assumes its lockedposition, as shown in Fig. 2. 4

As a result of my invention, it will be seen that there is provided asimple and inexpensive means for efiectively holding the pull tab in a suspended position out of contact with the looking member when thelocking member is in its locked position thereby eliminating any danger of accidental downward movement of the slider along the fastener elements in an opening (iirection.

While I have shown and described an embodiment which my invention may assume in practice, it will be understood that this embodiment is merely for the purpose of illustration and description, and that other forms may be devised within the scope of my invention as defined in the appended claims.

What I claim as my invention is:

1. A slider for slide fasteners of the class described, comprising a slider body, 2. lug projecting from one side of said slider body, a locking member pivotally connected to said lug at one end and having a locking projection on its other end, a .pull member connected to said slider body for longitudinal movement therealong having trunnion portions engageable with said locking member for moving the same to its unlocked position when a pulling force is exerted to said pull member,resi1ient means for normally urging said'locking member to locked position when the pull member is released, and a projection extending outwardly from the face of said pull member adjacent the trunnion portions thereof, said slider bodyhaving an aperture in the wing thereof into which said projection is adapted to extend when the pull member is disposed in a suspended and locked position, said projection adapted to rest on the lower wall of said aperture so that the weight of said pull member or any member attached thereto will not tend to move the locking-member to its unlocked position.

2. A sliderfor slide fasteners of the class described, comprising a slider body, a lug projecting from one side of said slider body, a looking member pivotally connected to said lug at one end and having a locking projection on its otherend, a pull member connected to said slider body for longitudinal movement therealong having trunnion portions engageable with said looking member for moving the same to its unlocked position when a pulling 'force is exerted to said pull member, resilient means for normally urging said locking member to locked position when the pul1 member is released, and a pair of projections extending outwardly from the trunn-ion portions of said pull member, said slider body having .a .pair of apertures in the wing thereof into which said projections are adapted to extend when the .pull member is disposed in a suspended and locked position, said projections adapted to rest on the lower wall of the respective aperture so that the weight of said pull member or any member attached thereto will not tend to move the locking member to its unlocked position.

'3. AIs'Iider for slide fasteners of the class described, as defined in claim 1, including means carried by the locking member tending to force automatically the projections into the apertures by the action of the locking member.

NOEL J. POUX.

REFERENCES CITED The following references are of record in "the file of this patent:

UNITED STATES PATENTS Number Name Date 1,966,457 Norton etal. :July 17, 1934 1,977,528 Puc Oct. 16, 1934 2,280,968 Newhall Apr. '28, 1942 FOREIGN PATENTS Number 7 Country Date 558,502 Great Britain of 1944 828,314 France of 1938