US2030763A - Pile wire - Google Patents

Description

FEE 1936. o. J. PICKARD ET AL 2,930,763

PILE WIRE Filed June 28, 1934 Patented Feb. 11, 1936 UNITED STATES PATENT OFFICE PILE WIRE Oliver J. Pickard and Fred Pickard, Philadelphia, Pa.

Application June 28, 1934, Serial No. 782,934 1 Claim. (01. 139-44) This invention relates to improvements in pile through the access Opening afiorded by h wires of the detachable cutter blade type, and a tongue 8, it slips neatly into the pocket 5 with its principal object of the invention is to provide a inclined ends in engagement with the correspondwire of that character having novel means for ingly formed undercut ends of the p e 5 facilitating the insertion and detachment of the tongue 8 then exerts a resilient pressure against 5 cutting blade. the side of the blade holding it in position in the The invention further resides in the novel pocket and preventing accidental displacement. structural features hereinafter set forth and illus- It will be noted that the lower attenuated end tratedin the attached drawing, in which: of the tongue 8 is cut away at 9 to provide an 10 Figure 1 is a side elevational view of the bladeopening for insertion of a suitable pointed in- 10 receiving end of a pile wire made in accordance strument for flexing the tongue 8 outwardly with our invention; when the blade 6 is to be withdrawn from the Figs. 2 and 3 are detached side elevational views pocket, the normal flexibility of the blade perof the elements of the blade-receiving end of the mitting displacement of the end laterally from ir under the contiguous inclined end of the pocket 16 Fig. 4 is a sectional view on the line 4-4, Fig; 3, so that the blade may be readily withdrawn. In and inserting the blade, the pointed smaller end of Fig. 5 is a view in perspective of the blade-rethe latter may be inserted under the end of the ceiving end of the wire illustrating the method of tongue, and by simple pressure slid into the 20 inserting and withdrawing the blade. pocket until the opposite end of the blade slips 20 With reference to the drawing, the wire comunder the undercut shoulder in the filler piece 3. prises an end portion l which in the present in- In the present instance, we have shown the stance is attached by brazing to the body portion filler piece 3 provided with an auxiliary cutting 2 of the wire. The end portion I is formed in the edge III which in the event that the main blade 6 present instance of a filler piece 3 formed as is broken will be effective to cut the pile loop. 25 shown in Fig. 2 and a U-shaped envelope 4 This auxiliary blade is not essential and may be shown in Figs. 3 and 4. In assembly, the piece 3 eliminated where desired. There may be a confits into the envelope 4 and is welded or othersiderable' modification of the structure herein wise secured to the latter. The combined thickillustrated and described without departure from nesses of the double wall of the envelope 4 and of theinvention as defined in the appended claim. 3

the piece 3 are substantially the same as the nor- We claim: mal thickness of the body 2 of the pile wire. By A pile wire comprising a substantially U- reason of the recessed formation of the upper shaped end portion, and a filler piece secured edge of the filler piece 3, as shown in Fig. 2, the 7 between the sides of said U-shaped end portion assembly provides a pocket 5 for reception of a and being recessed at the top to afford a pocket 35 cutting blade 6, and this pocket as shown in for reception of a primary cutting blade, the end Fig. 1 is undercut at both ends for the purpose of of said filler piece adjoining the extremity of the retaining and of preventing accidental displacewire being of increased height to provide a proment of the blade 6 after the latter has been jection at the upper edge of the wire sharpened inserted in the manner hereinafter set forth. at the inner side and constituting an auxiliary As shown in Figs. 1, 3 and 5, one side of the cutting blade, the ends of said pocket being unenvelope 4 is provided with a substantially V- dercut to prevent retraction of said primary blade shaped incision 1 providing a flap or tongue 8 from the top of the pocket, a section of one side which may be flexed outwardly as shown in Fig. 5 wall of said U-shaped portion being partially sevto afford access to the blade-receiving pocket 5. ered to provide an integral flexible tongue dis- The diagonal forward end of this tongue lies opplaceable from the normal plane to afford access posite the corresponding undercut end of the to said pocket for insertion and withdrawal of pocket 5, while the lower edge of the tongue lies said primary blade. at the bottom of the said pocket, so that when the OLIVER J. PICKARD.

blade 6, which is formed at its ends to neatly fit FRED PICKARD. 50

the undercut ends of the pocket, is slid into place

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