US1718907A - Scissors - Google Patents

Description

June 25, 1929.

H. JORDAN 1,718,907

SCISSORS Filed July 28, 1927 0 4 J4 a 7) 2 4? 1 c I 1 j 1W lm yl BY INVENTOR WITNESES Howsu. JQQDAN ATTORNEY Patented June 25, 1929.

U STATES HO-"WELL JORDAN, or PACIFIC BEACH, CALIFORNIA.

scrssons.

Application filed July 28,

The present invention is concerned with the provision of a pair of scissors which will be substantially self sharpenin Ordinary scissors quickly develop a certain amount of looseness and play at the screw fulcrum with the result that they do not n'operly cut and have every appearance of being dull, although the blades in real ty generally stay sharp. The present practice of bending the blades inwardly agg 'avates this condition.

In accordance with the present invention I overcome the above noted disadvantage by the use of springs which automatically take up any play which occurs and serve to main tain a. continuous inward pressure on the blades at a point slightly in advance of the screw fulcrum. By virtue of this construction blades which are substantially straight may be used, and the springs in addition to preventing play will act to render the blades self sharpening.

Other objects of the invention are to provide a pair of scissors of simple practical construction which will be rugged, durable and efficient in use, substantially conventional in appearance and well suited to the requirements of economical manufacture.

With the above noted and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings Fig. 1 is a plan view of a pair of scissors embodying the present invention.

Fig. 2 is an. edge view thereof.

Fig. 8 is an enlarged longitudinal sectional view on the staggered line 3-3 of Fig. 1.

Fig. 4 is a perspective view of one of the springs.

The scissors indicated in the drawings include the usual blades 10, ships 11, shanks 12 and handles 18. The interfitting ships 11 are pivotally connected together by a screw lat.

Under ordinary conditions a play soon develops at this screw which serves as a fulcrum for the movement of the blades, and in accordance with the present invention I have devised means for preventing such play.

The means illustrated are springs which comprise substantially flat spring fingers 15, the free ends of which bear against the outer 1927. Serial No. 209,079.

face of each blade 11 at points disposed forwardly of the screw 14. The other ends of the spring lingers 15 are preferably integrally connected to blocks 16, these blocks corresponding in length to the width of the ships 11 and being received in pockets 17 formed in the ships. Preferably the blocks 16 lie flush with the outer surfaces and lateral surfaces of the ships so that externally the scissors are substantially conventional.

The fulcrum screw is rotatable in the upper block and tapped into the lower one, its lower end being preferably upset as illustrated to prevent accidental unscrewing.

The springs exert the necessary pressure on the blades at points forwardly of the pivot 14, not only to take up wear but to maintain the blades in mutual sharpening relationship by holding them pressed firmly against each other throughout the entire length of their effective cutting edges.

The springs are substantially built into the scissors and cannot work loose inasmuch as they are nonadjustable after they are incorporated.

Obviously various changes and alterations might be made in the general form and arrangement of the parts described without departing from the spiritand scope of the appended claims.

I claim:

1. A pair of scissors including blades, ships and shanks, a fulcrum screw passed through the ships and providing pivotal mounting for the blades, and springs bearing against the outer faces of the blades forwardly of the screw to prevent play between the blades, said springs comprising fingers integral with blocks setfiush in the outer faces of the ships.

2. A pair of scissors including blades, ships and shanks, a fulcrum screw passed through the ships and providing pivotal mounting for the blades, and springs bearing against the outer faces of the blades forwardly of the screw to prevent play between the blades, said springs comprising fingers integral with blocks set in the outer faces of the ships, one of said blocks being tapped for threaded engagement with the fulcrum screw which passes through it, said blocks lying flush with the outer and edge faces of the ships.

3. A pair of scissors including blades, ships and shanks, a fulcrum screw passed through the ships and providing pivotal mounting for the blades, the outer faces of the blades having. relatively deep recesses therein around the fulcrum screw and relatively shallow recesses therein extending from the first mentioned recesses toward the free ends of the blades, blocks set in the first mentioned recesses, said blocks lying flush with the outer facesof the blades and being aperturedfor I HOWELL JORDAN.

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