US2854005A - Scissors - Google Patents

Description

Sept, 30, 1958 G. vlDo soIssoRs Filed Dec. 19, 1957 United States Patent O SCISSORS George Vido, Newark, N. J.

Application December 19, 1957, Serial No. 703,834

4 Claims. (Cl. 12S-321) This invention relates to instruments such as scissors and similar articles, having pivotally-connected coactingv blades, jaws or members.

One of the objects of the invention is to provide a scissors of such construction that the blades are always held in pressure contact, for cutting eciency, and which may be readily taken apart for complete sterilization, as necessary, for example, in a surgical scissors.

It is known that the usual scissors or shears has its two cutting blades pivotally Connected by a screw or a rivet and that, especially after use, `a looseness develops, the blades not being held rmly together for cutting efiiciency. The user then has to exert opposing pressure on the thumb and finger rings in order to hold the blades lirmly together; this puts a continuous stress on the workers hand, which is not only tiresome, but detracts from the skill of the user, as well known to barbers and others who use scissors or shears. Barbers also know that such a scissors result in split hairs yif the proper pressure is not continuously maintained, as sometimes happens. My invention avoids the mentioned objections.

The drawings illustrate the invention, and in these:

Fig. 1 is a plan view of a scissors;

Fig. 2 is a side view, partly in section, of part of the scissors;

Fig. 3 is a plan view of a surgical separating tongs embodying the invention; and,

Fig. 4 is a sectional view showing the means for pivotally connecting the blades or coacting members.

Referring to the drawings for a more detailed description, and at first to Figs. 1, 2 and 4, the numerals 5 and and 7 indicate, respectively, coacting scissor blades, which respectively have Shanks A and 7A and thumb and finger rings 5B and 7B. To pivotally connect the blades, annular grooves 5C and 7C are cut into the inner faces of the blades, as clearly shown in Fig. 4, and a ring or annulus 9 is fitted into said grooves, the latter each being one-half as deep as the length of the ring. The ring is preferably easily removable from the grooves.

To hold the blades together, a bowed spring 10 is shown pivoted at 10A to the shank 5A, and exerts pressure at its other end, on blade 7, adjacent the pivot. To put the blades together, or to take them apart, the spring is swung laterally, as shown in dotted lines in Fig. 1. To hold the spring in place, a small projection or tit 12 is formed on the under surface of the free end of the 2,854,005 Patented Sept. 30, 1958 l CC spring and its into a depression 15 (Fig. 4) formed in the surface of blade 7. For the same purpose, a sha1- low concave depression is made in the pivoted end of the spring (Fig. 1), in the edge thereof, into which depression a small projection 16 from shank 5A fits when the spring is in holding position, the spring being readily moved away from this projection by lateral pressure on the spring.

Referring now to Fig. 3, this shows a separating tongs, used in surgery to hold two parts of the body apart, and comprises jaws 18 :and 19, with shanks 18A and 19A respectively, and thumb and finger rings 18B and 19B respectively. The two parts are pivoted at 21 by the means previously described for the scissors, and are so formed that when the thumb and finger rings are moved toward each other, the jaws move apart. A curved spring 23, similar to the described spring 10, holds the two parts together, `and similar means are provided for holding the spring in pressure-exerting position. Additionally, however, I provide an arcuate member 25. This member extends laterally from the pivoted end of the spring to the shank 19A, and has a series of depressions 26 in its upper surface to form tits on its under surface. These tits tit into a depression in shank 19A to hold the jaws in a selected position.

What is claimed is:

1. In a scissors or the like, having a pair of coacting blades or jaws, means for pivotally connecting the blades or jaws together releasably, without the use of a rivet, screw or pin, and consisting, essentially, of an annular member fitting into opposed annular grooves formed in the inner faces of the blades or jaws, and a spring pivotally connected to one of the blades or jaws and pressing against the other blade or jaw, to hold the blades together.

2. In a scissors or the like, having a pair of coacting blades or jaws, means for pivotally connecting the blades or jaws together releasably, without the use of a rivet, screw or pin, and consisting, essentially, of an annular member fitting into opposed annular grooves formed in the inner faces of the blades or jaws, and a spring pivotally connected to one of the blades or jaws and pressing against the other blade or jaw, to hold the blades'together, said spring being pivoted adjacent one of its ends for lateral swinging movement, its other end being adjacent the pivotal connection.

3. The combination specied in claim 2, in combination with catch means, yieldable to pressure, for holding the spring in operative position. i

4. The combination specified in claim 2, in combination with a member connected to said spring and extending laterally therefrom to and in contact with the shank of the opposite blade or jaw, and selective means on said member for holding the blades or jaws a desired distance apart.

Lincoln Apr. 29, 1941 Cacarillo Ian. 1, 1946

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