US 1664629 A
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April 3, 192s. 1,664,629.
H. KIELBERG METHOD PRODUCING TAPERED BXPANDED IETAL REGPTACLES Filed April l0.' 1926 x Afoif n, i
INVENTOE (2n-To New Patented Apr.- 3, 1928,.
UNITED STATES" PATENT ori-fics.
HENRY KIELIBERG, F MARTINS FERRY, OHIO, A SSIGNOR TO WHEELING STEEL COR- PORAATION, 0F WHEELING, WEST VIRGINIA; A CORPORATION 0F DELAWARE.
METHOD OF PRODUCING TAPERED EXPANDED-METAL RECEPTACLES.
vApplication led Api-i1 10, 1926. Serial No. 101,201.
This vinvention relates to a method of forming reticulated metal receptacles of tapered form, and it has for its object to prois a side elevation of a tapered fabric taken online 3-3,'Fig. 1.
Heretofore, in the formation of tapered receptacles from expanded metal sheets, it has been the practice to preliminary stretch the rectangular sheet in such manner that it is elongated at one lateral edge to a suiiiciently greater extent'than at its opposite edge, and then to unite the ends of the sheet. While such method is effective for producing the required tapered form of body, it is objectionable forl certain reasons, among which may be mentioned that in the sheetstretching opera-tion, some of the meshes are liable to'become distorted to al greater or lesser extent than others..
In carrying `out the. method'of the presenti invention, a rectangular sheet of expanded reticulated metal` is first bent into cylindrical form, as shown in Fig. 1, and the meeting ends thereof by spot welding. The diameter 'of the cylinder 1 issubstantially that desired at.' the bottom end of the basket body. The cylinder is then seated on end within the einbraceof a .shallow die 2, following which a tapered mandrel 3 of the size andform rebasket body formed from said cylinder; andA Figure 3 is a detail section of the metal are permanently joined, as
quired is lowered vertically within the cyllnder 1 to aseated, or substantially seated,
" position upon the bottom of said die. As
said mandrel descends within the cylinder, the latter is .gradually expanded to the shape and size of the mandrel, as shown in Fig. 2, effecting substantially uniform spreading or opening of the meshes throughout the circumference of the basket'body 4.
1. The method of producing tapered basket bodies, which consists in joining the ends of a rectangular expanded-metal sheet t'o 55 i form a cylinder, disposing said cylinder on eid, and then lowering within said cylinder a tapered mandrel to effect gradual stretching of the 'sheet to conform to the size and shape of said mandrel.
2'. The method of producing tapered basket bodies, which consists in joining the ends of a rectangular expanded-metal sheet to form a cylinder, disposing said cylinder on end within the embrace of a die, and then o5.
lowering a tapered mandrel within said cylinder to a.y seated position with respect to said die, such mandrel having the form and size required for the interior of the basket body.
3. The method of forming tapered basket bodies, which consists in producing an expanded metal sheet of rectangular form in which all parts thereof are expanded uniformly, then joining the ends of the sheet 7-5 to form a cylinder, and finally introducing withinthe cylinder a. tapered mandrel yto subject the metal to additionalstretching which progressively decreases in extent toward the end opposite that at which the gn mandrel enters.
vIn testimony whereof, I afiix my signa'- ture. y