US1279389A - Safety-scissors. - Google Patents

Description

A. MALSIN.

SAFETY SCISSORS.

APPLICATION nuzn MAY 29. my.

1 ,27 9,389. Patented Sept. 17, 1918.

m: NDRIIIS nzrzns ca, PHUTD-LITHO.. WASHmcmN. n. c

I ALBERT MALsnv, 0F nnwvoak, N. Y.

SAFETY-SCISSORS.

Specification of Letters Patent.

Patented Sept. it, 1918.

Application filed May 29, 1917. Serial No. 171,615.

To all whom it may concern:

Be it known that I, ALBERT MALsIN, a citizen of the United States, residing in the city of New York, county and State of New York, have invented certain new and useful Improvements in Safety-Scissors, of which the following is a specification.

The present invention relates to shears or scissors, particularly of the kind used for cutting ofi fine or narrow edges around hemstitches produced indelicate' fabrics.

Whenordinary scissors are used for this purpose, it is almost impossible even with skilled hands to avoid cutting or injuring the fabric or hemstitch. Y

Theobject of my invention is to provide safety scissors for that particular kind of work, whereby injury to the goods will be rendered impossible.

More specifically, my invention has for its object to equip scissors with a safety guard, which will'extend below and longitudinally of the blades, and which while exposing'to the latter only the edge to be out OK, will shield the parts of the fabric at the sides of the edge.

Another object of my invention is to provide means for steadying the central position of the guard.

With these and other objects in view my invention consists in the construction, combination and arrangement of parts, as will be hereinafter described and set forth in the appended claims.

In the drawing, which forms part of this specification, and in which similar reference numerals denote corresponding parts, Figure l is a side view of a pair of scissors equipped with my new guard; Fig. 2 is a plan view of the guard; Fig. 3 is a cross section on line 33 of Fig. 1; Fig. 4 is a top plan view of the modified construction; Fig. 5 is a side view thereof; and Fig. ,6 is a top plan view of another modification.

In Figs. 1 to 3, inclusive, '1, 1' denote the two blades of the scissors, which in a well known manner may have their free or pointed ends 1 curved upwardly. The pivot 2 connecting the two blades by means of the nut 3 is hollow and is adapted to loosely bear a pin or bolt 4 for the support of the guard 5. The latter may be substantially of the shape shown in Fig. 2, and consists of a comparatively thin plate, which at its rear end is provided with a conically shaped rf ration be b ged. y and upported on the correspondingly shaped head v 4, formed on the lower end of the pin 4.

The plate is provided with a longitudinal. central recess or incision 5 which at its open end may be spread or widened, as at 5 The free end of the plate may be slightly bent or curved upward,'as at 5 so as to lower blade by a washer 7 mounted on the pin it, or by other suitable means. For the same purpose, the nut 6, working on the threaded end 4 of the pin 4: has its lower part coneshaped so as to rest with a comparatively small bearing surface on the nut V 3 of the shears.

By reason of this structure theplate' or "guard will have the tendency to maintain its central position during the cutting operation of the scissors, and this tendency will be assisted by the'friction between the guard and the fabric during the cutting operation.

In order, however, to insure the guard in its central position and to prevent accidental derangement thereof, suitable auxiliary means may be employed. In 4 these means consists of a system of levers or lazy tongs, which are arranged over the upper faces of the blades, and their rear end 8 of which is fulcrumed on the pivot 3 of the blades. The free ends of the tongs are provided with pins 8 or the like, which slidably engage curved grooves 9, provided in the guard or plate 9. The lateral hinged ends 8 of the tongs are pivotally supported in eyes 1 projecting laterally from the blades of the scissors. The curvature of the groove 9 corresponds to the paths described by the free ends 8 of the tongs during the manipulation of the scissors. The plate or guard 9 in this case is also provided WIth a central longitudinal recess or 1ncis1on 9 which, as in the former case, is adapted to I engage around the edge to be cut away by the scissors. 7

Another form of structure for steady'ing the position of the guard during the cuttmg process is shown in Fig. 6. Here coils or springs 10, 10' are employed, which are arranged crosswise to each other above the ad s an Wh h. w th he end ere se:

cured to pins 1 projecting from the eyes 1 of the blades, and with their other end are secured the pins 9 projecting from the guard or plate 9. The springs are inadeto perfectly counteract each other so that there will be. an equal expansion and contraction of both springs during the manipulation of the blades, by reason of which the plate Will be maintained in its central position.

The structure can, of course, be modified in various other ways without deviating from the principle of my invention, and I therefore do not wish to be understood as limiting myself to the details described and shown.

What I claim and desire to secure by Let- I ters Patent is:

1. A pair of scissors comprising blades, a plate extending longitudinally of and below said blades and having a longitudinal central slot and levers pivotally connected to said blades at one end and movably and pivotally connected to said plate at the other end for holding said late stationary during the movement of the lades.

2. In scissors, the combination with the blades thereof, ofa guard for said scissors consisting of a comparatively thin longitudinally and centrally recessed plate suspended from said scissors to extend contiguously below and longitudinally of said blades and means for holding said plate so that it will be stationary during the cutting action of the blades.

3. In scissors, the combination with the blades thereof, of a guard for said scissors consisting of a comparatively thin plate suspended from said scissors so as to extend contiguously below and longitudinally of said blades and a system of levers for holding the said plate so that it will be stationary during the cutting movement of the blades.

4. In scissors, the combination with the blades thereof, of a guard consisting of a comparatively thin longitudinally and centrally recessed plate adapted to extend contiguously below and longitudinally of said blades, means for fastening said plate to said scissors and means for holding said plate so that it will be stationary during the cutting movement of the blades. 7

In testimony whereof, I afiix my signature in presence of two witnesses. I

ALBERT MALSIN.

Witnesses:

RAE HALPERN, MAX G. ORDMANN.

Copies of this patent may be obtained for five cents each, by addressing the "Commoner of reiterate,

Images