US1870025A - Scissors - Google Patents

Description

Patented Aug.,2, 1932 g unirse STATES FREDERIC H. RAUH, 0F SOUTH ORANGE;

y CO., OFNEVARK, NEW J ERSEY,

PATENT cervice.

SCISSORS Y Application led November 3,` 1928.

. are to provide certain novel means for limitlng the dista-nce to which the Shanks may be spread apart; and also to so form the. coacting and overlapping portions of the shanks as to avoid pinching' or catching `the hand of the user between them when the scissors are closed in the ordinary way in use.

The scissors of the class to which my invention is directed are used by operators in such arts as weaving and knitting, to snip and cut threads, and tape, the scissors being picked up, used and dropped again repeatedly in the course of the operators work. When so pickedup for use, both shanks of the scissors lie in the palm of the hand, while the ball of the thumb rests near the pivot connecting the two cutting' members, and the index finger bears against the opposite side of the scissors; thus the central part of the index finger supports the scissors, in opposition to the ball of the thumb. Hence, when the scissors are so grasped in thehand, with the shanks thrust apart by a. spring, and the fingers of the hand are contracted to close the shanks, there is a tendency for the portion of the thumb and index finger which may be contiguous to the opening between the Shanks, to be caught and pinched between the Shanks when they are forced together. rIhis is also true of that portion of the palm adjacent to the joint.

The rapidity with which the operator finds it necessary to grasp and use the scissors does not permit of a careful adjustment of the scissors which might avoid such accidents.

So, in my improved scissors, I have so formed them as toavoid producing openings between the shanks which are likely to catch the iingers ofthe operator in using the scissors as above described.

In thel drawing Fig. l represents a plan view of a pair of scissors illustrating my invention, the shanks and blades being opened; Fig. 2 is a similar view, but showing the scissors closed; Fig. 3 is an edge view, taken as looking to the left on Fig. 2, the free end of l Serial No. 316,918.

the Shanks being broken away to avoid crowding the figures; Fig. 4 is an inside viewof one of the scissor members; Fig. 5 is asimila-r view of is a cross sectional view,ltaken on'the line 6 6 of Fig. 2, looking up.; Fig; 7 is a similar view, taken on the line 7-7 of.Fig.`2, looking up; and Fig. 8 is a similarview, taken on the line S-8, looking up. e Y In alll the figures similar parts are nated by similar reference numerals.

A pair of cutting blades, l, 3, are provided kdesigand secures them to NEW JERSEY, .ASSIGNOR TO J. WISS & SONS Y A CORPORATION 0F NEW JERSEY the other of such members; Fig. 6

respectively with Shanks, 2, 4; and the shanks are respectively provided with pins 5, 6, beftween and over which is' mounted a coil spring shanks,-as 4, I form a recess or socket ll;

and on the opposed face of the shank 2 I` form a lug ork projection 12, which is adapted to swing to and fro in the socket 11. but to be arrested yby the outside wall'lS ofthe socket when the Shanks are spread apart, as in Fig. l. The socket ll is preferably open at its end toward the free so that ready access is afiordedto it for the removal ofv any dirt or obstructing foreign matter which may accidentally get into it.

The shanks 2 and 4,

tions, are not Abrought into direct Contact, but yare adjusted with a substantial opening between them when the shanks are closed. Furthermore, the shanks at this point are rounded, or approximately cylindrical Vin cross section so that theyY present no sharp angles on their opposed surfaces. The shoulend of the shank,

where they approach Y each other adjacent to their widened porbe pushed out from between them, allowing the shanks to slide under and past, s0 that there will be no pinching,r or gripping of the fingers between the shanks.

It will be noticed also that in the construction explained there is no opportunity for any portion of the fingers of' the user to be caught between the stop element 12 and the side of the socket 11. Neither can the fingers be caught betweenr the edges 1li, 15 Vof the widened portions of the shanks, andthe cooperating shanks as is the case where such widened portions of the shanks approach offset and beveled elements on the shanks, as is common in certain styles of scissor construction.,

In use, such a pair of scissors as I have illustrated may be seized between the fingers and palm of the hand, as above described, closed. allowed to open again and be discarded without any danger of pinching` the fingers or hand of the user during` the operation. the scissors, when released, opening to a predetermined normal extent convenient to the work in hand, and being! held there against the action of the springr 7 in the most convenient position for immediate use.

I wishV it to be understood that the con-V struction which Ii have illustrated is to be considered to be a typical. but not an eX-r elusive, form of the embodiment of my inat a point between the cutting the handles.v the Shanks being offset and'- vention. for it is Obvious that modifications of details mightA be made, as by the use of mechanical equivalents, without departingy from the spirit of mv invention as claimed.

Having thus described mv invention. what I claim and desire to secure bv Letters Patent of the United States is:-

Inv seliopening: scissors, the combination of a pair of Shanks, each embodving an onerating' handle provided with a cutting blade at one'end, a pivot connecting the shanks blades and broadened behind the pivot, unbroken bv anyr openingsin their broadened., outer faces, and rounded 0nV the exterior lines of such l surfaces. one of which broadened portions is provided with a rearwardly opening recess,

and the, other with an integral lug projectf ingf into said. recessl to constitute.- stop-openfmg means, therecessbeinpg closed on all sides;

except rearwardly in all positions of the shanks the shanks adj acentrto theofsetportions beingr rounded in cross section and sub-- stantially separated from each4 other when the scissors are closed, and springr opening means operating between the shanks, whereby the scissors are prevented from pinching the hand of the user.

FREDERIC H.. RAUH'..

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