US784827A - Safety-pin. - Google Patents

Description

No. 784,827. PATENTED MAR. 14, 1905. J. Mm A. W. ZIMMERMANN.

SAFE-TY PIN.

APPLIOATION FILED NOVA-1, 1904.

v I nvenlor Witnesses.

UNITED STATES Patented March 14, 1905.

PATENT OFFICE.

SAFETY-PIN.

SPECIFICATION forming part of Letters Patent No. 784,827, dated March 14:, 1905.

Application filed November 14, 1904. Serial No. 232,670.

To all whom it may concern:

Be it known that I, JENs MARIUs ANTON WVILHELM ZIMMERMANN, a citizen of Den mark, residing at Gammel Kongevej 153, Copenhagen, Denmark, have invented a certain new and useful Improvement in Safety-Pins with Sliding Branches, of which the following is a specification.

My invention relates to improvements in safety-pins. My invention relates more particularly to eX- tensible safety-pins, and comprises generally a length of Wire bent upon itself to form pin and leg sections, the ends being inclosed by a guard to which the leg-section is yieldingly secured.

My invention will be more fully described in connection with the accompanying drawings and will be more particularly pointed out in the appended claims.

In the drawings, Figure 1 represents a View of the safety-pin in side elevation, showing the guard member in section. Fig. 2 is a top plan View of the pin as shown in Fig. 1. Fig. 3 is an enlarged vertical section on line A B in Fig. 1.

Like characters of reference designate similar parts throughout the difierent figures of the drawings.

My invention comprises generally a safetypin formed from a single length of resilient wire bent between its ends in one or more coils. The free ends of said wire extend outwardly from said coils and form leg and pin sections a and L. The pin-section Z) is provided with a pointed end adapted to facilitate its entrance into the material to which the pin is secured. Each of said sections a and Z) is partially inclosed at its outer end by a guard 0. Said guard is provided with lateral V-shaped slits 11:, adapted to permit withdrawal and insertion of the pin-section Z) therethrough, the upper part of said guard being rounded and forming a pocket in which the pointed end of the pin 5 is seated. The lower end of the guard c is generally cylindric. Said cylindric portion is relatively larger in diameter than the section inclosed, the additional space being occupied by a spiral spring (Z. The inner end of the I from said guard.

guard is reduced at e, forming a shoulder against which one end of the spring seats. The opposite end of said spring preferably seats against a shoulder formed by a washer f, rigidly secured on the end section a. In order to prevent the pin from rotating to bring the section 6 out of alinement with its guard when said section is released therefrom, I preferably provide the shoulder f with an upwardly-projecting tongue 9. The walls of the guard immediately above the spring (Z are preferably collapsed in a manner to permit engagement thereof with the tongue 9, the latter performing the function of a key or feather.

It will be seen that the section Z) of my improved pin is normally held in its guard, inasmuch as the outer or pointed end of the legseetion b normally extends slightly beyond the crotch or inner ends of the slits m. Thus the pin cannot be easily disengaged from its guard, as is the ease with pins which are rigid and non-extensible. The resilient wire normally holds the pin-section tightly seated in the guard, while the spring (Z holds the guard in a retracted position to prevent the pointed end of the pin from being released. It will be noted that in disengaging the pin from material which is thick and unwieldy it will not be necessary to collapse the leg-section bdownwardly against the section a and release it from the guard by swinging it laterally through one of the slits. The user merely grasps the guard with the fingers and pulls the same outwardly and away from the ends of the pin and leg sections, which action will be effect-ed against the resistance of the coilspring (Z and will release the pin-section Z) This is a great advantage over pins wherein it is necessary to compress the loop-sections in disengaging the same from the guard, inasmuch as the said loop is in some cases entirely filled, or, in other words, tightly crowded with thick material which is not easily COmpressed.

The construction of my improved pin is S ch that the same may be very cheaply manufactured, the component parts being few in number and easily assembled. It will be noted that the tongue 9 need not be accurately fitted in the guard, since it is not called upon to maintain the pm in alinement with the guard except when said pin is detached.

While 1 have herein shown and described a specific embodiment of my invention, I do not wish to be limited to the precise form shown, as it will be obvious that changes may readily be made therefrom without departing from the spirit of the invention.

Therefore what I claim, and desire to secure by Letters Patent, is*

1. An extensible safety-pin comprising a single length of resilient wire bent uponitsclf to form pin and leg sections, a guard inclosing the ends of said sections, an expansivelyacting spring wound about said leg-section, a washer on the outer end of said leg-section forming a shoulder against which one end of said spring is seated, said guard being reduced and forming a seat for the remaining end of said spring, said guard having lateral slits normally preventing dislodgment of the pin-section, and a projecting shoulder or lip on said washer adapted to engage collapsed wall portions of the guard and serving to maintain alinement between said pin and guard.

2. An extensible safety-pin comprising a single length of resilient wire bent upon itself to form pin and leg sections, a guard inclosing the ends of the said sections, a washer on the outer end of. said leg-section forming a shoulder against which one end of said spring is seated, and an expansively-acting spring wound about said leg-section, a seat being formed for the remaining end of said spring formed by reduced wall portions of said guard.

3. An extensible safety-pin comprising a single length of resilient wire bent upon itself to form pin and leg sections, a guard inclosing the ends of said sections, and an expansivelyacting spring for said leg-section yieldingly connecting the same with said guard.

4. An extensible safety-pin comprising a single length of resilient wire bentupon itself to form pin and leg sections, a guard for inclosing the ends of said sections, and a spring connecting said leg-section and guard, said leg-section having an upwardly extending projection adapted to engage collapsed portions of said guard thereby serving to maintain alinement between the same and said pin.

5. An extensible safety-pin comprising a wire forming pin and leg sections, a guard for inclosing the ends of said sections, a spring connecting said leg-section and guard, and means maintaining alinement of said guard and sections.

6. An extensible safety-pin comprising pin and leg sections, a guard inclosing the ends of said sections, and a spring for said leg-section connecting the same with said guard.

7. An extensible safety-pin connn'ising pin and leg sections, a guard therefor formed of a separate piece of material, a spring yieldingl y connecting said leg-section and guard, and means holding said leg-section and guard in alinement.

8. An extensible safety-pin comprising pin and leg sections forming a loop and constructed from a single piece of material, aguard inclosing the ends of said sections, and a spring directly connected with said guard and legsections, said parts being separably united, said spring holding the ends of said section and guard in yielding engagement.

In testimony whereof I aflilx my signature in presence of two witnesses.

JENS MARIUS ANTON VTLHELM ZIMMERMANN.

Witnesses:

M. CARLnnRG, O. OnRIs'rnNsEN.

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