US2161260A - Safetypin - Google Patents

Description

June 6,1939. .MATTFELDT 2,161,260.

SAFETYPIN Filed April 11, 19:58

- INVENTOR: JESSIE MATTFELDT ATTORNEY.

Patented June 6, 1939 UNITED STATES PATENT OFFICE 2,161,260 zf: .A v SAFETYHN Jessie Mattfeldt, San Francisco, Calif. ,A Application April 11, 1938, Serial No. 201,347

3 Claims.

This invention relates to improvements in safety pins and more particularly to a double ended pin.

Among the objects of the invention is to providea safety pin adapted to withstand longi- V tudinal or end pull.

Another object is to provide a pin from which objects can be detached without detaching the pin from its support.

Ano-ther object is to provide a coil spring pin tension into which fabrics will not enter.

Other objects and advantages will appear as the description progresses.

In this specification and the accompanying 15 drawings, the invention is disclosed in its preferred form. But it is to be understood that it is not limited to this form because it may be embodied in modifications Within the purview of the claims following the description.

In the one sheet of drawings:

Fig. 1 is a longitudinal vertical section on the line I-I, Fig. 2, of a duplex safety pin constructed f in accordance with this invention.

Fig. 2 is a plan view from above of the same.

Fig. 3 is a cross section o-f the same on the line III-III, Fig. 2.

Fig. 5 is a fragmentary detail in side elevation of the same.

Fig. 6 is a cross section of the same on the line 30 VI-VI Fig. 5. Y

Fig. 7 is a side elevation of a structural modicatio-n of Fig. 1.

Fig. 8 is a plan view of a single double ended pin offered as a modification of this invention.

In detail, the construction illustrated in the drawing, referring first to Fig. 3, comprises the central keeper clip I preferably composed of sheet metal bent into a substantially channel shape in forming dies. The upper edges 2, 3 are bent back 40 to form laterally disposed keepers for the sharpened ends of the pins. 'I'he base is pierced at 4, 5

and curled upwardly to form` the longitudinal clinching lugs 6, 1.` The opposite ends of the clip are cut and shaped to form the lateral clinching 45 lugs 8, 9,I0, and

'I'he duplex type of double ended pin shown in Fig. 1 comprises two lengths of hard drawn wire I2, I3, bent back upon themselves to form the central loops I4, I5, that are clinched beneath 50 their respective lugs 6, 1. The parallel extensions I6, I1 and I8, I9 are clinched beneath the lateral lugs 8, 9, I0, and II respectively to rmly fix the several pins to the center clip I, as in Fig. 2.

The extensions I 6, I8 are bent upward at 20, 2 I,

55 then outwardly and around to form the helical coils 22, 23 respectively. At 24, 25 the wire is bent inwardly to form the pins 26, 21 having the pointed ends 28, 29 adapted to be sprung under the keeper 30 against the tension of the coils 22, 23 respectively. These off- set bends 20, 2| and 24, 25 are perpendicular to the axis of the wire and tangential to the arcs of their respective coils 22, 23.

The extensions I1, I9, are similarly bent to form the coils 3|, 32 and the pins 33, 34 having the pointed ends 35, 36 adapted to be sprung under the opposite keeper 31.

The invention operates substantially as follows: With the pins 26-21, 33-34 released from their respective keepers 30, 31, as at 21, Fig. l, the duplex pins at either end are adapted to penetrate and engage a fabric. 'I'he bends 20, 2| and 24, 25 prevent the fabric entering the coils 22, 23. This protects the fabric from injury, increases the holding power, and holds the extensions I6, I8 and |1, I9 parallel with the plane of the fabric, such as a catamenial girdle.

The opposite set of pins such as 21, 34 are then in position to engage another piece of fabric, for instance a sanitary napkin, which can be acljusted or renewed Without detaching the device from the girdle. Other uses will suggest themselves to those skilled in such matters.

The more ornamental pin shown in Fig. '7 is constructed and operates substantially as described and shown in Fig. 1, except that the center clip I is extended as at Irc and curled around the end coils 2|:c, 23:11. For simplicity, the bends 2U, 2| and 24, 25 may be omitted and the clip ends I, I flanged to extend within a portion of the annulus of the coils to prevent the entrance of the fabric between the spirals of the coils. It is common practice in the conventional single safety pin to guard the coils against fabric intrusion by crimping a sheet metal guard thereover. But so far as I am aware, such guards have not been integral parts of a central keeper clip as shown herein.

The face of the clip I may be ornamented or bear words embossed therein. To that end, the center lugs 6, 1 may be omitted and the lateral lugs 1, 8 extended as at 9x, Ila: to perform the same function.

To meet conditions not requiring duplex pins at each end of the device, the structure may be simplied as in Fig. 5. The opposed pins 26m, 212: and coils 22's', 233: are formed in a single piece of wire |633. This wire has an angular bend such as 38 clamped in a return bend 39 of the clip 40 to prevent the wire turning in the clip,

see Fig. 6. 'I'he opposite ends of this clip are bent outwardly and downwardly to form the keepers 3M, 3711:.A The coils 22'111, 23's: may be formed, as in Fig. 1, with the bends 20--25 or provided with conventional crimped on guards such as described, or as shown in Fig. 7, without departing from the spirit of the invention.

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

l. A double ended, duplex safety pin comprising two lengths of Wire having sharpened ends and coiled back upon themselves on opposite sides of their central portions respectively; ,a clip fixed to said central portions and extending partially around said coils; and keepers on said clip adapted to engage said ends.

2. A duplex safety pin comprising two lengths Y of wire having sharpened ends, and looped back upon themselves with the loops in opposed relation to each other; return coils in said respective lengths, whereby all of said sharpened ends terminate adjacent said loops; a clip joining said loops together and having keepers thereon engageable with their respective sharpened ends.

3. A duplex safety pin comprising two lengths of wire having sharpened ends, and looped back upon themselves with the loops in opposed relation to each other; return coils in said respective lengths, whereby all of said sharpened ends terminate adjacent said loops; a clip joining said f loops together and having its ends partially encircling said coils respectively; and keepers on `said clip engageable With their respective sharpened. ends.

J ESSIE MATTFELDT.

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