US839836A

US839836A - Staple blank or strip.

Info

Publication number: US839836A
Application number: US28902305A
Authority: US
Inventors: Edwin T Greenfield
Original assignee: GREENFIELD AUTOMATIC FASTENER Co
Current assignee: GREENFIELD AUTOMATIC FASTENER Co
Priority date: 1905-11-25
Filing date: 1905-11-25
Publication date: 1907-01-01
Anticipated expiration: 1924-01-01

Description

B. T. GRBENFIBLD. STAPLE BLANK 0R STRIP.

APPLICATION FILED FOV. 26, 1905.

l 1L 3 -T WITNESSES-z I INVENTOR fl; v & kg/(4 B) 111'; A f/army kw W W PATENTED JAN. 1, 1907.

- tofore which 2 is a plan view thereof.

EDWIN T. GREENFIELD,

or MONTIOELLO,

NEW YORK, ASSIGNOR TO GREENFIELD AUTOMATIC FASTENER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

STAPLE BLANK OR STRIP.

, Specification of Letters Patent.

Patented Jan. 1, 1907.

Application filed November 25,1905. Serial No. 289,023.

T0 at whom it may concern-.-

Be it known that I, EDWIN T.- GREEN- FIELD, a citizen of the United States, residing at Monticello, county of Sullivan, and State.

of New York, have made a new and useful Invention in Staple Blanks or Strips, of which the following is a specification.

My invention is directed particularly to an -1mprovement upon' staple blanks or strips like that shown and described in patent to Washington I. Ludlow, N 0. 450,246, April 14, 1891,"andit has for its objects, first, to provide a staple blank or strip of the character described the before-mentioned patent in which the staples may bereadily severed or cut from thestrip with the application of as little energy as ossible and in such manner that there shallli of the blank or strip proper during the time that the staples are being thus severed; sec-' 0nd, to provide a staple blank or strip of such a nature that the staples when severed therefrom shall possess greater binding-surface- "u on the material bound together thereby at t e outer ends of the staples than was herepossible with existing staples severed from the staple blanks or strips; third, tomateri ally strengthen the staples at the angular portions thereof or at those portions where the prongs or legs of" said staples are bent downward; fourth, to provide a staple blank or strip with oblong openings extending between the interconnected staples in such manner that where such blanks are used in connection with staple-severing machines the feed thereof may be better effected than was ossible with existing typesof staple-strips eretofore in general ublic use.

. My invention will e fully understood by referring to the accompanying drawings, in

Figure 1 is a perspectiveview of my improved completed staple blank or strip. Fig. Fig. 3 is a sectional view taken on the line X X, Fig. 2; and Fig. 4 is a perspective view of a completed staple after it is severed from the strip.

.Prior to my invention staple blanks or strips like that disclosed in the before-mentioned patent had been used and a staple blank or strip'somewhat similar thereto had been devised by myself for use in connection with staple-severing machineslike that disclosed in a e no bending or twisting prior patent, numbered 572,293, granted to me on the 1st day of December, 1896, in which improved staple-strip the staples proper were severed from each other to such an extentas to leave only a single central adjoining-web embracing as little metal as could be practically used, thereby minimizing the amount of energy required to sever the staples. Such improved stapleblanks have heretofore gone largely into public use, and the present invention is an improvement thereon to the extent that lsubstitute for the single central adjoining-web duplicate websat the opposite sides of the completed strip, said. Websconstituting the metal left in the blank or strip after oblong openings have been cut out in the back of the strip and between the staples proper;

Referring now to the drawings, in which like letters of reference represent like parts wherever used, and first to Figs. 1 and 2, S

represents the completed staple blank or strip, the same consisting of a series of staples in blank form having prongs or legs T T and backs B, the backs thereof being separated from each other in the blank or strip by oblong openings R R of sufficient width to enable the web to constitute strengthening lugs or parts L L at the angular portions-ofthe sta les when several or completed, said parts or ugs being also adapted to have relatively large surface bearing upon the matenal to be bound or held by such staples. Such a staple-blank has decided advantages over the staple blanks or strips hereinbefore referred to, first, in that the oblong openings R afford an accurate means of applying the feedlng mechanism when said strips are used with staple-severing machines like that disclosed in my before-mentioned patent. In other words, in using my improved staple-strip heretofore extensively used, in which the staples are joined together by a centralized web or connectingpart, it is necessary to use duplicate feedin pawls in such machine to assure accuracy of feed, while withthe present improved strip singlefeeding-pawl mechanlsm may be used and to such an advantage as to aflord the -most accurate feed. The unproved strip also possesses the further advantage that by reason of the strengthening .nature of the webs at the angular ortions of the staple blank or strip thereis re ativelylittle tendency to twist, a feature of Objection which Was of material importance in connection with the before-mentioned blank or strip.

Althou h the openings R R are preferably oblong, t ey may be of any desired conformation or shape so long as they separate the backs of the staples from each other and leave relatively thin webs at the side thereof to be cut away when used in a staple-severing machine.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is

1. As an article of manufacture a staple blank or strip embracing aseries of staples interconnected only at the lateral or side edges of the back of such blank or strip.

2. As an article of manufacture a staple, blank-or strip embracing'a series of staples united togetheronly' at'the angular portions between the legs and the backs thereof and separated from each other by oblong openings.

3. As an article of manufacture a staple blank or strip embracing completed staples integrally connected only at the angles be tween the legs and backsthereof.

4. As an article of manufacture a staple blank or strip embracing a series of staples separated from each other by spaces between the legs and oblong openings between the backs extending to points relatively near the lateral edges of the strip.

In testimony'whereof Ihave signed my name to thisspecification'inthe presence of twosubscribing witnesses. I

EDWIN T.'GREENFIELD. Witnesses: y

O. J. KINTNER,

KEATING.