US981407A - Method of straightening tubes and rods. - Google Patents

Method of straightening tubes and rods. Download PDF

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Publication number
US981407A
US981407A US55695710A US1910556957A US981407A US 981407 A US981407 A US 981407A US 55695710 A US55695710 A US 55695710A US 1910556957 A US1910556957 A US 1910556957A US 981407 A US981407 A US 981407A
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tube
tubes
rods
distorted
straightening
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US55695710A
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Joseph B Fischer
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies

Definitions

  • This invention relates to improvements in methods of'straightening bent or distorted metal tubes or rods, and especially those that lose the'r'shape as a result of harbetween'the two sections..-
  • Yln vthe aeeonipanying' drawing I have )Busti-ated a tube-urns distorted torni and shown-tlm relative arrznigelnent of sneh tube und its struiglitener tube.
  • vl ln the following views- Figure 1 shows a distorted tube as it appears after the hardening bath; Fig. @shows the straightener tube, and Figli shows the relative arrange'- nient ot the distorted and theY straightener tube when the former isv being inserted iny the latter;
  • Fig. is a side elevation of'a tube carrying frame.
  • tubes Where a number of tubes are to be straightened they may be placed in a suitable trarne G having registering holes to receive the outer tubes so that the hot air may freely circulate around the tubes and they maybe conveniently handled in bulk.
  • a method ot straightening a, tube dis-v torted as ay result of hardening which consists in inserting such tube in asti-aight tube having substantially thicker walls than the inserted tube. and tittingtightly around the latter, and then subjecting the asseml'wled tubes to a temperature otl about 50() or more 'degrees Fahr. as inay'be required.

Description

J. E. FSGHER.
TRUE DE" STRAIG HTENNQ TUBES AND RODS= APPLGATIGN TLED APE. 22, i910.
77 @Mina JSEPH B. FISCHER, OF CHICAGO, ILLINOIS.
.METHODIOF STRIGHTENING TUBES AND RODS.
To all whom ti may-concern:
le it known 'that-'1, -JosErI-I B.' FIseHER, citizen of. the United States, residing' at i Chicagoiin the county vofCoolz and State of Illinois, haveinif'ent'ed certain newand useful Improvements in Methods` of Straightening Tubes and Rods, vof which the fol-lowing u specifieation'.
This invention relates to improvements in methods of'straightening bent or distorted metal tubes or rods, and especially those that lose the'r'shape as a result of harbetween'the two sections..-
r4tollmtritrgg detailed description.
Yln vthe aeeonipanying' drawing I have )Busti-ated a tube-urns distorted torni and shown-tlm relative arrznigelnent of sneh tube und its struiglitener tube. vl ln the following views-Figure 1 shows a distorted tube as it appears after the hardening bath; Fig. @shows the straightener tube, and Figli shows the relative arrange'- nient ot the distorted and theY straightener tube when the former isv being inserted iny the latter; Fig. is a side elevation of'a tube carrying frame.
Referring to the ldrawingin detail'7 4; represents a section of thin nietal tubing which has become distorted as a result-ot its harideni'ng batl. and subseqllent cooling. l
5 represents a section ot'straight 'tubing otlieavier gag-e than the section il, and with 'its innercross-diameter slightly7 greater than the external cross diameter of the tube section l so 'that there will be a tight shdm-gi'fit lSpecification of Letters Patent Yout drawing its temper beyond In testimony Patented Jan. i0, ML
Applicationiled Apr122, 1910. Serial No. 556,957.
To straighten the tube "si, I push it into the tube 5 until all of the distorted portion of the former is surrounded by the latter,
and in this position, I place both tubes in an'oven -haif'ing a 'temperature oi2 about 500 or more degrees Fahr. and leave them there until heated through, when they are witlidrawn and allowed to cool. and when cooled theinner tube will be straight and true and will have its proper tcn'n'ier.
Where a number of tubes are to be straightened they may be placed in a suitable trarne G having registering holes to receive the outer tubes so that the hot air may freely circulate around the tubes and they maybe conveniently handled in bulk.
It will be.apparent that distorted rods may be straightened in the manner described, it beingnecessary only to n'olong the period of exposure to the hot. air ot the oren.-
Having thus described luy invention what l claim as new, is
l. A Inethod oi straightening a distorted tube which consists in inserting suoh tube in. a straigl'it tube haring thicker walls than the inserted tube. and tilting tightly around the latter. und then subjecting the tubes .so arranged to Yn telnlwratiufe whirh will be snllivient'y to straighten theinner tube with- A the temper desired.
Q. A method ot straightening a, tube dis-v torted as ay result of hardening, which consists in inserting such tube in asti-aight tube having substantially thicker walls than the inserted tube. and tittingtightly around the latter, and then subjecting the asseml'wled tubes to a temperature otl about 50() or more 'degrees Fahr. as inay'be required.
i whereof l ailix my signature in the ypresence of two witnesses.
Amano VissoHEn, RUTH L. vVoonuons'r.
US55695710A 1910-04-22 1910-04-22 Method of straightening tubes and rods. Expired - Lifetime US981407A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125469A (en) * 1964-03-17 Specimen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125469A (en) * 1964-03-17 Specimen

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