US873927A - Locking safety-pin. - Google Patents

Description

,Nm 873,927. 'PATBNTED DEG. 1v, 19o?.

K. G. DIBTBRIGH. Lou-ING SAFETY PIN.

AHLIOATION ILED DBO. 27. 1906.

' vw ATTORNEY UNITED STATES KARL G. DIETERIGH, OF NEW YORK, N. Y.

LOCKING SAFETY-PIN.

Specification of Letters Patent.

:Patented nec. 17, 1907.

Application filed December 27. 1906. Serial No. 349.619.

yKings county; in the State oie New York,

have invented certain new and useful linproveinents in Locking Safety-Pins, of which the following is a full, clear, and exact speci-f' iication. n

l My invention relates generally to fastening devices and the saine has for its object more particularly to provide a simple, efiicient and reliable safety pin which is' so constructed that it will be stronger and capable of withstanding greater strain than such pins are commonly a le to withstand.

Further said invention has for its obje'ct to f provide a safety pii'i wherein its pointed end i may be securely locked within the cap or guard.

Further said invention has tor its object to provide a safety in wherein the pin incinber proper when loc/(ed with its cap or guard will. serve to strengthen the entire structure,

and prevent. the pin ineinber beconiiiig bent under strain and its end withdrawn lrom its cap or guard. I

To the attainment. ot the aforesaid objects and ends i'ny invention consists in the novel details of construction, and in the coinbina tion, connection and arrangeineiit ot' parts liereiiiatter more iully described, and then l pointed out in the claims.

in the accompanying drawings forming nierals ol reference indicate like parts. Figure 1 is a side View ol' a safety pin constructed according to and embodying my said inventaken on the line Lt-Ltfof Fig. Fig. 5 is a 3 detail perspective view of the cap or guard. l Fig. (l isa detail view detached from the pin; illustrating a inodi ied torni ol pin, and Fig. 7

is a similar View illustrating a llurther inodi- 5 lied torni of pin, designed to be used in safety Q pins ofs'inall size in ade of wire of small gage.

whole formed essentially ol' n single piece ol. wire, and comprising a substantially straight bodyortion 11, a pin 12', and a spring 13 provi ed at the junction olk said body-portion 11 and pin 12. The body-portion 11 nearits inclosed end is bent inward and outward again to forni a guide 14 which is tapered towards its end and serves to guide the point end ot the pin 12 into the cap or guard. The end 15 ol" the body-portion 11 is bent at l right angles to tlielongitudinal axis of the pin, and its extreme end 16 is again bent inward and parallel with said axis.

17 denotes the cap or ,guard which is `torined ol a single piece of sheet metal and comprises a tubular portion .18 which' is clamped to the end of the body-portion 11 and surrounds the portions 15 and 16 thereof.4 The inner end of said cap terminates in two upwardly extending separated parallel side plates or nienibers 19, 19 vadapted to receive intermediate the saine the point end of the pin 12. The extreme rear ends ol plates or nienibers 19, 19,. are bent toward each other to forni llugs 2G`ji20. The i upper edges ot said lugs 20, 20 alte rounded at 21. 21, and the vertical op osiiigv edges l' thereof are slightly tapered aiirFnieet at the lower edge of the cap or guard where the i saine lorin a substantially senil-circular rel cess 22 adapted to receive the point end of thc pin l 2: The lugs 20, 20 of theside plates or ineinbeis are bent forward as best shown at Figs. 2 and .-l. I

The pin 12 is provided upon its opposite sides adjacent to its point end with parallel vertical recesses or notches 23, 23 Vwhich are so'positioned that the saine will be engaged Y by the inwardly projecting lugs 20, 2O of the part ot this specification wherein like. nuf cap or guard 17 when the end of the in is in position therein. and serve to hold t ie point end of said'pin l2 securely attached thereto.

ln the modification illustrated at Fig. 6, the engaging recesses ot' the pin 25 are annular. With either torni of recess as shown in this figure, and also in Figs. 1, 2 andv 3, there may be a plurality ol" recesses arranged side by side in order to insure the end of the pin ,being securely engagei'l by the ends of the lugs where the pin itseltl becomes bowed un der a strain, and consequently so shortened l that. it could not be properly engaged were it only provided with a single notch or recess'.

At Fig. 7 l have illustrated a further form ol pin, and in this construction the pin 28 is vln said drawings 10 designates the pin as a provided adjacent to its point end with an enlarged portion ,29 which tapers in both directions, and provided at its thickest part with an `annular rec-ess 30. It will of course be obvious that any number of such recesses l whether vertical or annular may be provided.

The construction here illustrated is more particularly designed for small pins which are usually made ofsmall stock and for that rea' son could not be recessed without weakening the same.

The uses and operations of the devices are obviousl` It is to be noted, however, that in my improved form of safety pin the point end is not only secured against .lateral movement, but also against longitudinal movement, due usually to the bendingor bowing of the pin 12 under strain or tension, and that inV my said constructions this strain or tension is taken advantage of, for the greater the strain or tension on the pin l2 becomes, the tighter will the lugs 20, 20 of the cap due to their toggle-like action en age the recesses or groove in the in, am in this way the resiliency of the bodv- ,lortion l] is utilized to maintain the locliing engagement with the pin l2; while the strain or tension is resisted not only by the pinproper, 12, but

, by the entire structure.

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

l. A safety pin comprising a body portion, a pin extending therefrom, a cap secured to said body ortion provided with inwardly and forwardly projecting lugs adapted to engage said pin and wedge the end thereof intermediate said lugs under tension of said pin, substantially as specied.

2. A safety pin comprising a body portion, a cap secured thereto provided with inwardly and forwardly projecting lugs, and a pin extending from said body portion adapted to be engaged by the lugs on said cap, substan tially as specified.

A safety pin comprising a body portion, j a cap secured thereto provided with inwardly l and forwardly projecting lugs having their inner edges arranged substantially parallel to i wardly projecting lugs on said side plates,

and a pin projecting from said body portion provided with recesses adapted 'to be engaged by the ends of the lugs on said side plates, substantially as specilied. y

6. A safety pin comprising a body portion, a'cap secured thereto at one end provided at its rear end with inwardly 'and forwardly projecting lugs having their vertical edges free and arranged substantially parallel to each other, and a pm projecting from said body portion provided with recesses adapted to be engaged by the vertical edges of the lugs'on said cap, substantially as specified.

7. A safety pin comprising a body-portion, a cap secured thereto provided at its rear end with inwardly and forwardlyv rejecting lugs, a pin at the other end of said) body-portion, and a plurality of annular recesses arranged side by side in said pin adjacent to its free end adapted to be engaged by the lugs on said cap, substantially as specified.

Signed at the city of New York, in the county and State of New York, this twentyfourth drayof December, nineteen hundred and j v KARL G. DIETERICH.

Witnesses CONRAD A. Dm'ricnion, Louis B. HASBROUCK'.

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