US2112725A - Slider retaining device - Google Patents

Description

March 29, 1938. A. E. CARLILE 2,112,725

SLIDER RETAI NING DEVICE Filed Aug. 12, 1936 Patented Mar. 29, 1938 PATENT 'OFE'ICE SLIDER RETAINING DEVICE Alfred E. Carlile, Meadville, Pa., assignor to Talon, Inc., a corporation of Pennsylvania Application August 12, 1936, Serial No. 95,586

7 Claims.

My invention relates to slide fasteners, and

particularly to means for preventing unintended movement of the slider, resulting in opening up of the fastener.

Various forms of slider locking and retaining devices have been provided, some of which are of simple construction, and very effective in use in the majority of applications of slide fasteners. In some instances, however, for example, in the plackets of dresses, some of these stop devices have caused trouble due to difficulty of releasing the locking device or if a pin lock is used, there are the disadvantages that the pin might tend to catch on the material of the dress and the looking is not dependable due to the fact that sometimes the user will not put the pull in the proper position for locking.

It is an object of my invention to provide a retaining device which will effectively hold the slider in its fully closed position. In such applications as plackets of dresses and especially in corsets and girdles, it is hardly ever desirable to hold the slider .at any position except its fully closed position.

It is a further object of my invention to provide a retaining device such that the user will be able to detect positively when the slider is at the limit of its closing position.

It is a still further object of my invention to provide a slider retaining device which will function automatically, which will be simple in construction, and which will never stick even when the upper ends of the fastener are together.

The manner of accomplishing .the objects of my invention and the novel features and functions of the device will readily appear to those skilled in the art in view of the following description 01' my invention and in the accompanying drawing. In this drawing:

Fig. 1 is a rear plan view of the upper portion of a fastener showing my improved slider retaining device;

Fig. 2 is a cross-sectional view on line 22 of 46 Fig. 1; showing the stops in locked position;

Fig. 3 is a detail sectional view showing the parts in locked position; and

Fig. 4 shows only the slider and locking portions of the stop members, the other parts being 50 removed to facilitate illustration of the operation of my improved retaining device.

The fastener illustrated is generally of a conventional type having flexible tape stringers 5, 6, and cooperating rows of spaced fastener elements 5 1 along the adjacent longitudinal edges of the bound tightly stringers. The slider also may be of any known type and the one illustrated is generally like one commonly used in the trade. It comprises upper and lower wing portions 8, 9, respectively, con-' nected by a middle portion or neck l0, having a lug II to which'is connected the pull tab I2. The slider is manipulated by the pull tab along the fastener elements for opening and closing the fastener in a manner which is well understood in the fastener art.

In order to limit the closing movement of the slider, it is necessary to provide stop members and the stop members herein are of a novel form. They each comprise generally a sheet metal ferrule I3 bent to U-shape around the beaded edge of the stringer. Recesses l4, 15 on opposite sides of the center portion of the slider, and projections l6, II on the stop members fitting into and cooperating with these recesses retain the slider in fully closed position. In that position the stop members enter within the slider and the projections automatically enter into the recesses l4 and I5. These recesses are preferably cut out of one or both of the slider wings, herein the lower wing 9, and each of them has an outer wall l8, shown best in Fig. 4, which extends-approximately parallel to the longitudinal center line of the fastener or at least they preferably have no inclination diverging outwardly toward the end of the fastener to which the slider is moved in closing the fastener.

In order to urge the stop members outwardly and maintain the projections l6 and I! in engagement with the outer wall [8 of the recesses, I provide resilient means, herein small rubber pieces I9, 20, which are secured between the stop members and headed edges of the tapes and project through an opening in the outer wall in each of the stop members. These rubber pieces engage the middle portion or neck in of the slider and when the slider is moved over the top stops they will be compressed, the compressive action of the blocks acting to force the stop members outwardly and consequently hold the projections l6 and I! in engagement with the outer walls of the recesses. It will thus be apparent that in effeet the stop members serve as the male element while the recesses on the opposite sides of the slider wing serve as female elements or sockets of snap retaining devices, and when the slider is moved to its topmost or fully closed position, some effort will be required to force the slider completely over the top stops due to the fact that the rubber blocks l9 and 20 must be compressed. In the final movement of the slider the projec .palroi stringers Whst Iolelm as my invention is:

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