US1623533A - Safety pin with bayonet point - Google Patents

Description

A. DUDAS ET AL SAFETY PIN WITH BAYONET POINT Filed Aug. 28. 1926 Patented} Apr. 5, 1927.

* i euNr-r-En 2P Are-NT iorrzl- CEE.

ANDREW n-UDA-s A D ALBERT.-P. .WASIL, or HoMnsTEAn,.rnnnsynvnnm.

' SAFETYPIN"WITH BAYONET POINT.

'App'l'ication'filed August 28, 1926; Serial -'No. 1-32,297.

This invention relates 'to safety-pins I and more particularly to improvements in the construction of safety-pins of the :soca'lled Clinton-type. V p y The primary objectof this invention is to provide. a safety-pin of thewClinton-type which is able to withstand aan-uch greater pull than ordinary safety-pins of the same size, Without causing the 1 opening 7 of said pin. Anotherobject of this invention is to provide a safety-pin in which the pin- Qbar, after having been considerably de formed owing to the pull'exerted thereon will practicallylock itself with the cap of said satetypin and thus prevent theopenving thereof, A turthel object of this invention is -to provide; a safety-pin which to a great extent prevents the pricking" of the flesh of the-person on Whom thesafety-pin is applied. Still another object is the-provision of a safety-pin in which the above Fig. 2 isasimilar view ota slightly-inoidilied safetyypin.

Fig. 3.-is a side-elevation of -a safety pin similar to the one shown in Fig. 2 =but provided with a combined spring-loop and guard, also of our invention and #Which formsthe subject matter of a co=pending applicat-iona r Fig. 4 is a: top plan View otthe safety-pincap fused in the safety-pins illustrated .in Eigs. 2 and 3.

Figs; 5 and G'are considerably enlarged fractional ,vievvs showing respectively the conditions of the piercing endof the pin-bar under normal use and Whensubjected to an excessive pull capable of bending said pinbar as Well-as thebridgebar of the safety pin oil the design shownin Fig.' 1.

Figs. 7 and 8 are similar illustrations showing the behavior of the type of safety.

pin shown in Figs. Qand 3 under analogous conditions.

F ig. 9 is a vlewshowing the condltlon bar is pushed through cloth, etc.

Referring to: the drawing, it will benoted that our improved safety-pins follow. in the main, the construction of the universally used type of safet-y-pin'known in :the iart as prevaili-ngwvhen the piercing end of the pin- .Clinton-type safety-pins Thiswpin-comprises a bridge-bar 1, a pin'bar 2, the connectlng spring-loop '3 and thesafety-pln-cap 4. 'lhe'latter is held securely on thesafety pin by providing on thebridge-bar an upard bend 5 upon which the capis pressed by means of automatic presses. This cap is, of a course, intended to receive and hold therein :the pointed end of gthe .pin bar, when the safety-pin is. closed.

In .the ordinary Clinton safety-pin, the pin-bar is substantially straight from the spring-loop .3 tothe pointed end. Ve have found after extensive experimentation and modifications that by giving to the pointed end or the pin-bar the substantially bayonetshaped form shown in the various figures that-the resistance of a closed safety-pin against pull is-greatly increased while at the-sametii-nethe insertion of saidpin in cloth isnot only tacilitated but rendered much safer in so ifar: as the danger of pricking a persons flesh is concerned. 7

.As shown in:the various figures, the bayonet-shaped pointed. end of the pin-bar is formed by first bendingnp-a portion of the pin-bar. adjacentthe end thereof at an acute angle with the axis ofthe-pin-bar inform the heel portionfi and bythenproducing :at the end of said heel the downwardly direct.- ed piercing element 7 Whichis preferably bentat such an angleas to'bring: the point 8 substantially inalignment with the axis of the pin-bar. The .piercingelemcnt endthe heel-portion are respectively connected {to-- gether :and tothe body proper ot' the pin-bar by smooth bends or curves!) and 10in order to facilitate the insertion or extraction-0t the pin-bar in or'out of cloth.

In the construction shown 111 Figs; 2, 7

and '8, theordinary .Glinton safety-pin'has, further been modified by providingin the top portion of the cap 4 the elongated and substantially triangular aperture 11 disposed inaxial alignment with the pin-bar and through Whicha portion of the bay/onetpoint may protrude for thelpnrpose of tablishiing; a practically positive locking engagement of said hayonetrpoint 'utith lhe cap, whereby any acc dental opening of the ill safety-pin, due to excessive pulling, is prevented as long as the cap maintains its proper shape.

Under normal conditions, the piercing element 7 of a safety-pin constructed in the manner shown in Fig. 1 will assume the position illustrated in Fig. 5, that is, the upper bend 9 will bear against the underside of the top portion of the cap 4; and the heel 6 as well as the piercing element 7 will be at an angle with said underside.

When subjected to an excessive pull. the pin-bar and the bridge-bar will be bent in the manner suggested in Fig. (3. As shown therein, after a certain degree of curvature has been reached in the pin-bar, thestraight heel, portion 6 will bear completely against the underside of the top portion of the cap and, when in this position. will greatly increase the resistance of the pin-bar against further bending, as proved by actual and prolonged use.

This resistance against bending of the pinbar is still more augmented when the safetypin is provided with a notched cap, as ocpicted in the modified construction. In this case, further bending of the pin-bar will be resisted by the combined action of the flat heel bearing against the underside of the top portion of the cap assisted by the practically positive locking action produced by the engagement of the base portion of the bond 9 with the straight side 12 of the notch or aperture 11. .Vhen so constructed, the disengagen'ient of the pin-bar from the cap is practically impossible, unless the safety-pin be so stressed as to cause the spreading of the cap proper.

In Fig. 3 we have shown a safety-pin, which in addition of the above described features is provided with a spring-loop.- guard 't'orined integrally with the loop to prevent the pinching of cloth between the turns of said loop, as fully explained in a eo-pending application.

We have endeavored to graphically illustrate in Fig. 9 the reason why a bayonetpointed safety-pin of our invention oli'ers greater protection against pricking of the flesh ot' a person than the ordinary safetypin having a straight pin-bar. From this illustration it will be seen that when a pinbar is pushed through cloth in the usual manner, i. e. substantially parallel to the flesh of a person, the bent portion 9 will be the first one to come in Contact with the flesh and that the tendency of the piercing element 7 will be to direct the point 8 outwardly and away from the flesh.

From the above description it will be apparent that we have provided safety-pins which offer the advantages set forth without adding practically to the cost of manufacture of the common type of Clinton safety-pin by means of automatic machinery made especially for the purpose and readily available in the market.

From the above description taken in connection with the drawing, it is thought that a clear and comprehensive understamling ot' the construction, operation and advantages of our invention may be had, and while we have shown and described our invention as embodying specific structures, we desire to reserve the right of making such changes in said structures as do not depart from the spirit and scope of the invention as defined in the appended claims.

\Ve claim:

1. In a safety-pin of the character described, a pin-bar having a bayonet-shaped end comprising a heel-portion and a piercing element connected together by a bend, and a cap having an aperture adapted to be engaged by said bend.

2. In a safety-pin of the character described, a pin-bar having a bayonetshaped end comprising a heel-portion and a piercing element connected tog-ether by a gradual bend and a cap having a triangular aperture disposed in axial relation with said pin-bar and adapted to be engaged by said bend.

3. In a safety-pin, a pin-bar; a bridgebar and a cap; said pin-bar having a bayonetshaped end comprising a heel-portion directed outwardly at an acute angle with the axis of said pin-bar and a piercing element disposed at such an acute angle with said heel-portion as to bring the point only of the piercing element suljistantially in line with the axis of said pin-bar.

4. In a safety-pin, a pin-bar; a bar and a cap, said pin-bar having a bayonet-shaped end disposed in a plane passing substantially through the longitudinal axes of said pin-bar and said bridge-bar and comprising a heel-portion directed outwardly at an acute angle to the axis of said pin-bar and a piercing element disposed at such an acute angle with said heel-portion as to bring the point of the piercing element substantially in line with the axis of said pinbar; said heel-portion and piercing being respectively connected to said pin-bar and together by gradual bends to facilitate the insertion and extraction of said pin-bar; said cap being adapted to contact only with the gradual bend connecting the piercing element with the heel-portion when the closed pin-bar is under normal load and to contact with said heel portion when the pin bar is flexed by excessive stresses.

In testimony whereof we atiix our signatures.

bridge- ANDRElV DUDAS. ALBERT P. IVASIL.

ltltl

Images