US2081062A

US2081062A - Staple

Info

Publication number: US2081062A
Application number: US81489A
Authority: US
Inventors: Oscar S Nelson
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-05-23
Filing date: 1936-05-23
Publication date: 1937-05-18
Anticipated expiration: 1954-05-18

Description

y 1937- o. s. NELSON 2,081,062

S TAPLE Filed May 23, 1936 ATTORNEYS Patented May 18, 1937 UNITED STATES PATENT OFFICE 1 Claim.

My invention relates to improvements in staples and the object thereof is to provide a device of this character adapted to positively interlock with a rod, wire strand, or bar, to prevent endwise creeping of said rod, strand, or bar, as the case may be, relative to a support against which it is secured by said staple.

Another object is to provide a staple for the purpose above set forth adapted, under the action of driving blows against the same, to effect a gradual clamping action against the sides of a rod or strand being secured in position thereby.

Another object is to provide a staple having legs adapted to close together under the action of driving blows directed against the staple and having an inside cutting edge for biting into a rod or bar.

Other and subordinate objects together with the precise nature of my improvements will be 20 clearly understood when the following description and claim are read in conjunction with the accompanying drawing.

In said drawing:

Figure 1 is a view partly in side elevation and partly in section illustrating my improved staple O started in a support preparatory to securing a rod to the latter.

Figure 2 is a similar view illustrating the staple driven to its home position.

Figure 3 is aview in transverse section taken on the line 33 of Figure 2 looking downward. Figure 4 is a view in edge elevation, and

Figure 5 is a view in vertical transverse section.

Referring to the drawing by numeral, my improved staple is of the usual U-shaped form including a substantially semi-circular head portion 1 and opposed leg portions 2 diverging out Wardly, slightly, toward their outer ends. As distinguished from the usual article, however, the staple of my invention is formed from a length of resilient rod-like hardened steel of rectangular shape in cross section bent upon itself medially to dispose opposed corner edges there- 45 of in the plane of the staple whereby the staple is provided with inner and outer

sharp edges

3 and 4 extending around its inner and outer sides,

respectively, and opposed cutting edges 5 inter mediate the

cutting edges

3 and 4. The outer 50 ends .of the legs 2 are oppositely beveled, relatively, to provide cam faces 6 inclining from the outer cutting edges 4 to the inner cutting edges 3 toward the extremities of said legs 2.

The legs 2 of the described staple when driven into a support, by virtue of the cam faces 6, will be closed gradually as the staple is driven home into the support and thereby exert a gradual clamping action against an element such as a rod 1 being secured to said support. The staple is so designed that under such clamping action the inner cutting edges 3 will bite into the sides of the element being secured thereby and form a groove 8 in said element with which said edge 3 will interlock. Since the inner cutting edge 3 extends around the inside of the head portion l of the staple the groove 8 formed by said cutting edge 3 will extend at least half way around the element 1, it being understood, of course, that the staples are selected for use as regards size in accordance with the size of the element which it is desired to secure to a support.

Staples constructed according to my invention are particularly useful in securing sections, one of which is rep-resented at 9, of concrete forms together by means of large gauge wire since by the interlocking engagement effected with such staples such wire may be secured to the posts in a taut condition. Fur} thermore such staples by virtue of their cross sectional shape are effectively reinforced against lateral bending. The

cutting edges

3, 4 and 5 facilitate driving the staple by their cutting action in wooden or other supports. The outer legs of the staple may be otherwise formed than as" described to provide cam faces 6 thereon functioning as described, it being understood that variations in the inclination and extent of said faces are comprehended by my invention.

Obviously, other details of construction described in the foregoing may be varied without departing from the spirit of the inventive concept disclosed and it is to be understood that right is herein reserved to modifications of such details falling within the scope of the appended claim.

What I claim is:

A staple comprising a U.-shaped member formed of a rectangular rod bent upon itself in a manner to dispose a corner of one leg in confronting position to a corner of the opposite leg, the confronting corner of each leg comprising a keen edge for biting engagement with theperiphery of a rod or wire strand to hold the rod 7 OSCAR S. NELSON.