公开(公告)号：US3688539A

公开(公告)日：1972-09-05

申请号：US3688539D

申请日：1971-05-07

Applicant: HAROLD P HOGARTH

Inventor： HOGARTH HAROLD P

IPC: B21D3/02 ,  B21D3/16

CPC classification number: B21D3/16 ,  B21D3/02

Abstract: An apparatus for use in selectively straightening any desired one of a number of metallic mandrels, which mandrels may vary in length, degree of taper, and diameter. Such mandrels are used in the manufacture of fishing rods to form tubular tapered sections from a resin impregnated fiber glass sheet. The apparatus is adapted to removably grip a bent mandrel and power rotate the same on the longitudinal axis thereof, with the mandrel while so rotating having sequential sections of a selected longitudinal portion thereof subjected to a transverse bowing operation to straighten said portion. The apparatus is of such design that the magnitude of the transverse bowing of the portion being straightened varies as the straightening operation takes place, with the length of the bowed section decreasing as the diameter of said section decreases. Such variation in the degree of bowing of the sections has been found necessary to attain true straightening of a mandrel.

Abstract translation: 一种用于选择性地矫直多个金属心轴中的任何期望的心轴的装置，该心轴的长度，锥度和直径可以变化。 这种心轴用于制造钓鱼杆以从树脂浸渍的玻璃纤维板形成管状锥形部分。

公开(公告)号：US3456467A

公开(公告)日：1969-07-22

申请号：US3456467D

申请日：1967-12-13

Applicant: HAROLD P HOGARTH

Inventor： HOGARTH HAROLD P

IPC: B21D3/10 ,  G01B5/20 ,  G01B3/22

CPC classification number: G01B5/201 ,  B21D3/10