US2005872A

US2005872A - Detachable clasp

Info

Publication number: US2005872A
Application number: US668396A
Authority: US
Inventors: Rocke Louis
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-04-28
Filing date: 1933-04-28
Publication date: 1935-06-25
Anticipated expiration: 1952-06-25

Description

June 25, 1935. RQcKE 2,005,872

DETACHABLE CLASP Filed April 28, 1.935

IN V EN TOR.

A TTORNEY BY Lad/ls Fae/re mama i 25,

'UNlTED. STAT nn'racmm CLASP Louis Book e, Brooklyn, v. Y. Application April as, 1933, Serial No. 508396 15 Claims.

adapted to be connected and disconnected by a plurality of interlocking jaw or other fastener members cooperating with a sliding cam device mounted upon both members.

The object of the present invention is to devise improved means for rendering the two stringerscompletely separable instead of being permanently attached to one another as is generally the case. 1

Another object of the invention is to provide a new and improved fastening means whereby the two pieces of cloth or other material which are connected by the fastening means can be completely separated at one end thereof. and can then be readily refastened to each other.

Another object of the invention is to provide a new and improved fastening means whereby the movement of a control member in one direction will automatically open the said fastening means at one end thereof and whereby the movement of the said control member in the opposite direction can prevent the separation of the said fastening means.

The invention consists in a fastener of the type referred to having novel separable connecting members at one end formed so that teeth or projections upon one member engage correspondingly shaped eyes, sockets or notches in the other member, so that when said members are enclosed within the slider cam, the stringer to which one of them is fastened is movable longitudinally in relation to the cam and to the other stringer on which such cam device remains, to permit either of the complete separation of the stringers or of the proper positioning thereof to enable the slider to function in the usual manner for locking and unlocking the fastener.

The invention also consists in a fastener according to the preceding paragraph in which the separable connecting members are formed so that relative lateral movement in one direction is prevented while longitudinal separation is readily permitted when the connecting members are spread apart by the slider.

The invention is therefore, an improvement in detachable clasps used at the ends of separable fastening devices in which double holding means is provided, in which one member of the clasp is provided with a pin at the lower end which hooks into an eye at the lower end of the other member, and the member with the pin is also provided with part thereofwhich slidesinto a socket in the other member, and in which both members are stamped aprong extending from the upper from fiat'material and substantially ofthe same r overall width as the separable fastener members.

A further object of the invention is to provide an improved detachable clasp for separable fasteners in which the parts thereof are stamped from flat pieces of material with projections from 1 one part fitting into sockets of. the other.

' Another object is to provide an improvement in detachable clasps for separable fastening devices in which the interlocking parts are formed from the edges of the parts and within the width thereof. v

Another object is to provide a detachable clasp for separable fasteners-that is formed of comparatively thin stamped metal parts'which will positively hold and withstand the samestrain as g j t the fastener. r

Another object is to provide a detachable clasp for separable fasteners which is compact and comparatively solid so that the partscannot be flattened by a load on the sides thereof.

Another object is to provide a detachable clasp for separable fasteners in which the same parts that prevent separation thereof hold the members thereof laterally.

Another object is to provide a detachable clasp for separable fasteners which may be opened and closed by the same sliding cam that operates the fasteners.

A further object is to provide a detachable clasp for separable fasteners which is neat and attractive and not bulky or objectionable in appearance.

And a still further object of the invention is to provide a detachable clasp for separable fasteners which is of a simple and economical construction.

With these ends in view the invention embodies a detachable clasp for separable fasteners comat the end of a string offasteners with the clasp intheclosedp'osltion. r r

Figure 2 is a similar view looking toward the opposite side of the clasp showing that both sides thereof are substantially the same and comparatively plain.

Figure 3 is a view showing the female member of the clasp.

Figure 4 is a view showing the male member.

Figure 5 is a view showing the clasp members together on an enlarged scale and with parts broken away showing the relative positions of the interlocking members.

Figure 6 is a view showing the clasp members in the position of being placed together or separated.

Figure 'l is a similar view showing the members in the separating position, and showing an alternate arrangement of the parts in which the interlocking members protrude from the edges of the clasp members.

Figure 8 is a view looking toward the rear of one of the members showing teeth alternately positioned in the edges thereof for gripping the clasp members to stringers or material.

Figure 9 is a cross section thru the clasp members, or line 99 of Figure 5 showing the upper prong and socket.

Figure 10 is a similar section on line Ill-Ill of Figure 5 showing the position of the lower pin and eye.

It is found in the practical application of detachable clasps at the ends of separable fasteners that it is impracticable and objectionable to have any parts protruding from, or of a greater width than that of the separable fastener members, as any parts extending beyond the limits of the fastener members are readily detected by the wearer of a garment upon which the fastener may be placed or used, and such parts may catch in an ironing, pressing, or other machine thru which the object may be passed. Any parts extending beyond the limits of thefastener members are also objectionable as they may be mashed or bent out of shape so that they will not fit easilyinto or out of their corresponding parts, thereby rendering the device inoperative.

It has also been found objectionable to form these clasp members from separate pieces of material, or to form them so that any machine work is required, as rivets or the like for holding the parts together work loose and the ends catch in threads of the garments, and any machine work whatever, leaves sharp edges or even burs, and also makes the cost prohibitive.

It is therefore found of material advantage to form each of these two clasp members of one continuous piece of material, and stamp all of the parts from a flat plate with the interlocking parts formed by stamping out parts from the same plate. Then again, it is found of advantage to bend these same plates around the stringers of the fasteners and provide teeth in the edges thereof which may be clinched into the material to positively grip and hold the members in place. Forming the clasp members in this manner with a pin and prong of one member stamped from the material of the member at the position of the bend, and forming an eye and a socket at the corresponding edge of the other member from thematerlal of the member provides simple and economical construction which is strong, durable and everlasting.

'flien again, the combination of the pin and eye at the lower end of the members with the prong and socket at the upper parts provides with the separable fastener members which, when interlocked, prevent longitudinal movement of the clasp members in relation to each other, provides a very simple, efllcient and positive lock for the ends of separable fasteners.

When in the closed position these clasp members may be in substantially an abutting position as shown in Figure 5, so that there will be very little movement or play between them, or with the pin and prong arranged as shown in Figure 7 they may be slightly separated to provide clearance between the members. The separable fastener members may start directly upon the upper ends of the clasp members as shown in Figures 1 and 2, however, spacing members may be used at the upper ends of the clasp members, as shown in Figure 5. The upper ends of the clasp members may also be extended upward as far as desired to insure proper opening and closing of the clasp members as the sliding opening member is moved thereon. With clasp members of this construction it is therefore possible to provide a clasp of a very unique and compact design which is very desirable in devices of this nature.

In the drawing the device is shown as it would be made wherein numeral I indicates the male member of the clasp, numeral 2 the female member, and numeral 3 the sliding cam.

The clasp is positioned at the ends of stringers l and 5, upon which separable fasteners 6 and I may be mounted as shown in Figure 1. The stringers may be formed at the edges of pieces of

material

8 and 9, and it will be understood that these pieces of material may be parts of a garment or of any object or device. The stringers may also be of any type or description, may be of any shape and of any material. A sliding cam of a comparatively plain type is shown, however, it will be understood that any of the combination, or holding or locking cams may be used as may be desired. The members of this clasp may also be used in combination with separable fasteners or other similar devices of any other type or description and any number may be used in combination.

The members of the clasp are formed by being stamped from flat pieces of material and these are crimped over the ends of the stringers I and 5 and their inner edges Ill and II are provided with teeth I! and II which may be clinched into the material at the back of the stringers as shown in Figure 8. The teeth may be alternated as shown so that the points of one set will project into the spaces between the points of the other. It will be understood that any other means may be used for holding the clasp members to the stringers or material.

The male member I is made as shown in Figure 4 with a pin M extending from the lower edge and a prong I 5 projecting from the upper part thereof. The point It is adapted to be held in an eye formed by an opening it in a flange l1 extending from the lower end of the female member 2 and the prong l5 fits into a socket ll protruding from the upper part of the member 2. These holding or looking parts of the two members may be formed from metal or material of the parts or may be welded or attached thereto or formed in any manner or by any means.

The flange I! may be made as shown in Figure 3 or the edges is thereof may extend outward as shown in Figure 10 to form stops to limit the movement of the sliding cam 3. The point,

prong, eye or socket may also be of any other shape, size or design, as may be desired.

The pin l4 preferably extends directly downward with a slight backward curve as shown in Figures 4, 5, and 6, however, it may also extend outward as shown in Figure 'l, and the prong It may also extend outward in a similar manner in order to provide clearance between the-members if desired.

It will be understood that other changes may be made in the construction without departing from the spirit of the invention. One of which changes may be in the use of die'or other castings for forming the members, another may be in the use of more than one prong and socket, and still another may be in the use of other means for holding or mounting the point, prong, eye or socket on the lower ends of the stringers or separable fasteners.

The construction will be readily understood from the foregoing description. In use the clasp may be mounted on the lower ends of the stringers of separable fasteners as shown and described and when assembling the fasteners the cam 3 will be moved to the end of the stringer 4 until it engages the flange l1 and then the member i may be placed into the cam as shown in Figure '7 so that the point It will pass into the opening l6 and at the same time the prong i will extend into the socket i8. Then as the cam is moved away from the clasp the separable fasteners will be closed and the ends will be positively locked by the clasp. The pin ll holding in the flange l1 and the prongin the socket l8 provide double locking means which positively lock the two members together and prevent them being pulled apart or moving laterally or sidewise in relation to each other. As the holding parts are formed from the material of and within the limits of the members a very unique and solid construction is made possible and this is extremely simple and inexpensive. The clasp may also be hammered and subjected to considerable abuse without danger of damaging any of the parts.

It will be observed from this description and drawing and also from a comparison of this device with many other clasps, looks. or fasteners adapted for this purpose, that in all such devices, it is desired to have a pin and socket or eye of some form for locking or holding the lower ends of the clasp members, and some form of a prong and socket or interlocking parts for holding the upper parts of these members, and when both sets of the holding parts cooperate to prevent lateral, transverse, or sidewise separation of the members, and when they may be stamped from plate stock with each part formed completely from one piece of material with no machine work, welding, soldering, or attaching or fitting of the parts, or when these parts are formed so that no parts or pieces extend beyond the limits of the parts themselves, or the width of the fasteners, and when in view of these advantages in the details of construction a positive lock is provided that cannot separate with the fasteners in the closed position, or until they are opened by the sliding cam or opening member, an ideal design of detachable clasp has been developed for separable fasteners or the like.

The terms "lateral or transverse separation of the clasp members are understood to mean separation of the members in a plane passing thru the centers of both of the stringers or the plane of material attached to the stringers in which case the clasp members would move directly away from or toward each other with the parts held in operating position, and longitudinal movement of the members would indicate move: ment of the stringers in the same plane and with the axes of the stringers parallel and remaining substantially the same distance apart.

Having thus fully described the invention what I claim as new and desire to secure by Letters Patent, is:

1. In a clasp forseparable fasteners of the type wherein a plurality of metallic fastening means are permanently secured upon a pair of flexible stringers and a sliding cam is provided for locking or unlocking 'said fasteners; male and female members having abutting edges adapted to be crimped on the ends of said stringers, a pin extending downward from one end of the male member, a laterally positioned eye adapted to receive said pin extending from the female member, a prong projecting outward and extending downward from the male member forming a hook, and a socket closed at the front and open at the upper end protruding from said female member adapted to receive said prong, said parts adapted to disengage and interengage with longitudinal movement of one in relation to the other.

2. A clasp as described in claim 1 in which the said holding parts are formed in the abutting edges of said members. I

3. A clasp as described in claim 1 in which the members are stamped from flat pieces of material.

4. A clasp as described in claim 1 in which one of said members is provided with a stop to limit the movement of the sliding cam on said fasteners.

5. A detachable clasp for separable fasteners comprising two U shaped pieces of material adapted to be crimped over stringers of the fasteners, one of said U shaped pieces having two prongs, one of said prongs being pin shaped and the other hook shaped, said prongs extending from the back ofsaid U shaped piece, and the other U shaped piece having an eye and a socket extending from the back thereof, said eye and socket on one U shaped piece being substantially aligned and positioned to receive the pin and hook shaped prongs of the other U shaped piece respectively, with longitudinal movement of the members along the axis of the closure, forming terminal locking means therefor.

6. An end closure for two strips having interlocking fasteners on adjacent edges adapted to be engaged and disengaged by movement of a slider over said fasteners, said end closure comprising an end entering member secured to one strip adjacent to the end of one row of fasteners and an end entered member on the strip, said end entered member having a closed socket open at one end and said end entering member having a hook shaped prong adapted to slide into said socket from the open end thereof forming interengaging means for fastening them together and preventing lateral separation thereof positioned at the upper parts of said members and formed from the material from the abutting edges of said members, and an immovable lateral projection extending from one of the said end members and adapted to aid in positioning the interlocking fasteners on one strip with those on the other strip before they can be properly interlocked.

7. A separable fastening device of the type wherein a plurality of metallic fasteners are permanently secured upon a pair of flexible stringers and a sliding cam device, having a central channel and diverging channels extending from and communicating with said central channel, is pro vided for locking and unlocking said metallic fasteners, characterized by a clasp member secured to an end of each stringer, said clasp members provided with abutting edges, the abutting edge of one of said clasp members having an eye protruding from the lower end and also having a closed socket open at one end approximately intermediate of the length thereof, and the abutting edge of the other of said clasp members having an inwardly curved pin corre sponding with the eye, and a prong extending lengthwise thereof and spaced apart therefrom corresponding with the closed socket of the other of said clasp members, both pinand prong entering said eye and socket respectively with longitudinal movement and preventing lateral separation of said clasp members.

8. In a detachable clasp for separable fasteners as described in claim 7, a lateral extension on the eye of one of said clasp members to limit the movement of said sliding cam device to insure proper positioning of the separable fasteners and clasp members. 9. A detachable clasp as described in claim 7 in which the members thereof open and close by a sliding parallel movement in relation to the fastening device.

10. A fastening for a pair of flexible strips, comprising sheet metal members clamped about the ends of said flexible strips, one of said members having a finger extending downward therefrom at the lower end thereof and also having an extending hook adjacent the upper end thereof, and the other of said members having means receiving said finger and a closed socket open at the end for receiving said hook in which both the finger and hook are adapted to lock said members against lateral separation.

11. A fastening as described in claim 10 in which one of said members has a lateral projection at the lower end thereof.

12. A fastening as described in claim 10 in which the interlocking parts open and close by longitudinal movement of said flexible strips.

13. In combination, oppoud stringers having two series of separable fastening devices secured thereto, male and female members atached to the stringers at the ends thereof, a sliding cam adapted to open and close said separable fastening devices and said male and female members, a downwardly extending pin at the end of said male member, a prong adjacent the upper end of said male member and extending outward and downward, a projection at the lower end of said female member having an eye therein to receive the pin, and a socket closed at the front and open at the upper end adjacent the upper end of the female member adapted to receive the prong of the male member.

14. A device as described in claim 13 in which the male and female members are stamped from sheet metal and the holding parts stamped from the metal thereof.

15. A device as described in claim 13 in which the projection at the lower end of the female member forms a stop to align the two members and limit the movement of the sliding cam.

Louis ROCKE.