US2869206A

US2869206A - Safety pin

Info

Publication number: US2869206A
Application number: US745239A
Authority: US
Inventors: Yeglinski Joseph
Original assignee: Individual
Current assignee: Individual
Priority date: 1958-06-26
Filing date: 1958-06-26
Publication date: 1959-01-20
Anticipated expiration: 1976-01-20

Description

J. YEGLINSKI Jan. 20, 1959 SAFETY PIN Original Filed May 4, 1956 INVENTOR. .JOSEIPl-l YEGLINSKI BY j ww Unitedt Patent has? SAFETY PIN Joseph :Yeglinslki, Greenfield, Mass.

1 Claim. (Cl. 24-156) This invention is concerned with safety pins; and more particularly an improvement in a more safety pin that has -a safety feature both in a closed and in an open position. Most of the safety pins which presently exist have dangerous factors that have not been overcome. Particularly it is desirous to have a safety pin that can be used without concern in the true sense of safety. There are, of course, many uses for such a safety pin which carries with it an extremely high degree of safety. Just to mention a few, are uses with diapers of a baby, pinning up the clothes of an individual, etc.

This application is a continuation of a prior application filed by the inventor herein on May 4, 1956, Serial No. 582,844. 7

It is an object of the within invention to provide a safety pin that has safety features both in the closed and in the open position.

It is another object of the within invention to provide a safety pin that has the feature of being opened by movement of the hand, away from the pin arms.

It is yet another object of the within invention to provide a safety pin that has a self-biasing spring which prevents the movable point from extending beyond a particular location.

It is an additional object of the within invention to provide a safety pin that is durable, strong, readily and easily manipulated, and inexpensive in the cost of manufacture.

It is yet a further object of the within invention to provide a safety pin that is truly safe, and that will not cause injury if swallowed by an individual, and which is unlikely to be loosened from the clothing or wearing apparel; or if it is, will not stick into the person wearing the garment.

These and other objects are obtained by the use of a safety pin which is in the general shape of conventional safety pins, but which has certain important improvements and features of detail. In the particular embodiment herein described, a spring is located within a hollow head. The spring is forced under tension by a locking block pushed into the bottom of the hollow head. As a result of the spring being in the head, the motion to release the movable pin arm is longitudinal, up' and down, from the point. This action is accomplished by the simple structure aforementioned. Further, there is a self-biasing coil spring made up of both the fixed and movable pin arms which is at an inclined plane to these arms and which biases the movable pin to a predetermined position.

These and other objects will be apparent from the following detailed description, when taken with the accompanying drawing, in which:

Figure 1 is a front elevational view of the safety pin described herein.

Figure 2 is a side elevational view, looking toward the left side of Figure 1.

Figure 3 is a side elevational view, looking toward the right side of Figure 1.

a Fatentetl Jan. 20, 1959 Figure 4 is an exploded front elevational view show ing the head removed from the pin arms.

Figure 5 is an enlarged view of the head showing the pin arm out of locked position.

Figure 6 is a diagrammatic view of the hollow head with the spring under tension.

Figure 7 is a front elevational view of the pin showing the movable pin arm under the pressure of the coil spring and out of position.

The more safety pin comprises a head 2, which has an indented area 1 and a V-shaped guard 13. The guard 13 acts as a lock preventing the pin assembly from slipping on the garment to which it is attached.

t the rear of the head is a protrusion 3 and extending from the protrusion 3 is a fixed pin member'or fixed pin arm 4, that extends downwardly and continuously to form a coil spring 7 and 6, and that extends upwardly from 6 to form the movable pin arm 5. The coil spring 6, 7 is at an angle to the plane of the

arms

4 and 5, whereby the location of the movable arm 5 is fixed or biased to a position that adjoins on the inside or the outside of the pin guard 13.

The motion of the within pin is longitudinal. That is to say, it is up and down on the two

arms

4 and 5. For an understanding of the structure that makes this motion possible, reference is made particularly to the views of Figures 4, 5, and 6. In Figure 4 the head 2 is shown to be hollow, by the numeral 12. There is an opening 14 in the bottom of the head. The fixed pin arm 4 extends around to form a curve 15 extending above the movable arm 5. Near the top of the curve is a stud 11 which is integral with the pin arm 4. Mounted around the pin arm 4 is an upper spring 9 which is coiled about the arm. Affixed to the spring 9 and also movable on the fixed pin arm 4 is a locking block 8. The locking block 3 fits into the opening 14 in the head 2. The stud 11 is flush against that portion of the pin arm that is above the movable arm 5. This prevents slipping and maintains the stud ll. stationary. The hollow portion 12 of the head 2 permits the diameter of the spring 9 to expand with out interference to it.

Reference is particularly made at this point to Figure 6. The locking block 8 is in locked position in the opening 14. The spring 9 is mounted on the upper arm t5. In the view of Figure 6, the spring 9 is under pressure of the locking block 8, forcing it against the stud ii on the upper arm 15.

The locking block 8 is fitted into the opening 14 and either soldered or the head is squeezed therearound. The head 2 has an abutment on the outside of the arm 4 proximate the locking block 8. This abutment enables the user to engage the head 2 with his finger so as to be able to lift up on same in order to release the arm 5.

The stud 11 may be mounted on the upper arm 9 by being squeezed thereto, .or may be soldered or welded thereon. It is also possible to have the arm molded with the stud being a protrusion thereon.

In operation, the head is moved upwardly against the spring tension of the spring 9. This can be seen particularly in the view of Figure 6. In normal position, the spring 9 in the head 2 is under normal pressure or tension, and the head 2 rests downwardly on the fixed arm 4 covering the top of the point of the movable arm 5. This is, of course, the position shown in the view of Figure l.

The user of the pin will find it normally in the position shown in Figure 1. In order to release the movable arm 5' from the head 2, the user will pull the head 2 up against the tension of the spring 9 and the movable arm 5 may be pushed out from the V-shaped flange 13. The user can then insert his finger on the pin arm 5 and force it out, so that when the head 2 under normal pressure of spring 9 comes down, the pin arm 5 will be on the outside of the head 2 as shown in the view of Figure 5.

Upon finding the article to which the pin is to be attached, the user pushed the pin arm 5 out and through it in the conventional manner as shown in Figure 7. It is to be noted that in Figure 7 there are arrows showing the pressure of the biasing spring 6 and 7 upon the arm 5 tending to force it back into the head 2, beneath the indented area 1 so that the pin point will not stick into anyone, and will be shielded.

The spring 6 and 7 is at an angle of about 45 to the common plane of the

arms

4 and 5. This angle locates the point where the movable arm 5 is in equilibrium. The size of the angle is based upon the size and strength of the material used for the arms 4 and S. The point of equilibrium is required to be in contact with the guard 13 either inside or outside.

Upon inserting the arm 5 into the garment, it is only necessary to allow the coil spring 6, 7 to bias the arm 5 to its normal position as shown in Figure 5. It is then necessary to pull up on the head 2 against the tension of the spring 9 inside the head 2 on upper arm 15. When this is done, under the pressure of the coil spring 6, 7 the movable arm 5 will fall inside the guard 13 and the head 2 may be allowed to drop back down into the position shown in Figure 1.

Dimensions in the drawings have been exaggerated to teach the within invention more clearly.

In consideration of the foregoing description and disclosure, I claim:

A safety pin having a hollow head, said head having substantially fiat sides, the upper top portion of the head having a curved shape, a V-shaped flange for preventing slipping of said pin extending beneath one edge of the said head, said head having a recessed portion in the lower part thereof, said V-shaped flange being proximate thereto, an arm assembly secured to the inside of said hollow head, said arm assembly consisting of a fixed, relatively immovable longitudinal arm and a relatively movable longitudinal arm, said arms defining a plane and being made of a unitary structure and having therebetween a helical spring, said helical spring being at an angle to the plane of the said longitudinal arms so as to enable the movable arm to contact the said V-shaped flange when in both a closed and open position, said immovable arm being anchored in the hollow head by means of a locking block, said locking block being fitted into an opening in the bottom of said hollow head, said immovable arm having a main portion and a curved portion at its upper end for maintaining the hollow head rigid, said curved portion being substantially aligned with the inner contours of said hollow head, one portion of said curved portion being parallel to the main portion of the said immovable arm, a stud mounted proximate and in contact with said parallel portion of said curved portion, a spring circumscribing said curved portion and under stress between said stud and said locking block, and a gripping abutment on said head whereby said hollow head may be pulled away from said movable arm to enable said movable arm to be in an open position.

No references cited.