Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS1450935 A
Publication typeGrant
Publication dateApr 10, 1923
Filing dateDec 12, 1918
Priority dateDec 12, 1918
Publication numberUS 1450935 A, US 1450935A, US-A-1450935, US1450935 A, US1450935A
InventorsAnderson James L
Original AssigneeAir Reduction
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Permanent joint in fabricated form and method of maxing the same
US 1450935 A
Abstract  available in
Images(2)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Apr. W, 11923. 1,45@,935

J. ANDERSON PERMANENT JOINT IN FABRICATED FORM AND METHOD OF MAKING THE SAME Filed D60. 12, 1918 2 sheets-sheet 1 IAH/ENTOR BV ATTORIIIE;

Apr; M1 1923.

J. L. ANDERSON PERMANENT JOINT IN FABRICATED FORM AND METHOD OF MAKING THE SAME 2 sheets-sheet 2 Filed Dec. 12, 1918 @TATES @FFHCE.

JAMES L. ANDERSON, OF BAYONNE, NEW JERSEY, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO AIR REDUCTION COMPANY, INCORPORATED, OF NEW YORK, N. Y.,

A CORPORATION OF NEW YORK.

PERMANENT JOINT IN EABRICATED FORM AND METHOD OF MAKING THE SAME.

Application filed December 12, 1918. Serial No. 266,407.

I '0 all whom it may concern:

Be it known that I, JAMns L. ANDERSON, a citizen of the United States, and resident of Bayonne, in the county of Hudson and State of New Jersey, have invented new and useful Improvements in Permanent Joints in Fabricated Forms and Methods of Making the Same, of which the following is a specification.

The object of the invention is to enable plates and other fabricated forms, of steel or other ductile metal, to be united integrally, without difiiculty in the process due to expansion or contraction, and without the 5 existence of strains in the completed work likely to result in after rupture either in or out of the weld. The invention makes it possible, for example, to weld ship plates successfully, and 1s equally "applicable in other cases. The preferred manner of practising the invention will noW be briefly described, with illustrations of certain of its applications.

In the drawings:

Figure 1 is a plan or elevation showing portions of a number of adjoining plates and illustrating various stages of the process of uniting them;

Fig. 2 is a cross-section through the completed weld;

Fig. 3 illustrates the application of the invention to uniting the ends of cylindrical tubularsections; and

.Fig. 4: illustrates its application to the longitudinal seam of a tubular section or body. V

In Fig. 1 rectangular plates a, a (1?, a are to be united at their edges, without lapping and without riveting. They may form partof the outer fabric of a ship or of some other structure, and may be either flat on curved. In accordance with the invention the edges of the plates, instead of being straight, are provided with interfit- 5 ting formations, especially regular indentations the sides of which are inclined at angles of to the general direction of the joint. forming series of tapering triangular projections and recesses which match 0 when the plates are juxtaposed in predetermined manner, to form a saw-toothed seam composed of alternating reverse diagonals crossing the neutral or median general direction line. The edges are also beveled at approximately 45 to the surface, so that when the plates are put together a zig-zag trough is formed.

The joint between two plates, for example a and a is fused, with an oxyacetylene or other blowpipe flame or with the electric arc, with addition of metal, at some selected spot I), so that the seam is tacked. The spot would be substantially midway of one of the diagonal sections of the indented seam, and its extent lengthwise of the seam should be approximately as great as the width of the trough at the top. The seam may be regarded as composed of alternating right-hand and left-hand slopes or diagonals, forming the sides of the projections or recesses. The spot Z) is illustrated as located upon one of the right-hand sides. At the same time that the seam is being tacked at this point, or subsequently, and before it is tacked upon another corresponding side,

it is fused at a spot 6 midway of a lefthand side. The two tackings may be near together or far apart,"depending upon work ing conditions. Thereafter the remaining sides or slopes are similarly tacked at intermediate points, this stage being illustrated in the portion of the seam between the plates a and a The first two tack welds being at reverse sides, their contraction stresses oppose each other and the distortion or displacement effects are therefore neutralized. The subsequent tackings may also be, performed in such order as to balance, but this is not as important as with the first tackings. If desired, the seam could be tacked simultaneously at more than two points in the first instance, the locations being such as to balance.

The seam has now been tacked upon opposite sides of each projection, or in other words, where the diagonals cross the neutral or center line of the seam. As indicated by dotted lines as, this leaves in both edges relatively narrow free tongues d opposed by relatively wide areas 8 across the seam. Upon now welding the bent or it-shaped seam-section included between two of the tack welds, this section of the weld, being of large extent relatively to the tongue, becomes, as it were. assimilated to the area 6 and the contraction strains are thrown largely upon the tongue 03, which being ductile is capable of elongation. The same is true in respect to the welding of all these sections. In this way rupture of the weld While setting, or subsequently, due to contraction strains, is avoided, these strains being taken by the ductile tongues alternately at opposite sides of the neutral line of the seam. Owing to the form of the oint and the manner in which the weld is efiected. the contraction strains taken from the weld and applied to the original metal never exceed or dangerously approach the limit of tensile strength of the metal, as may be the case with other procedures. By the multiple diagonal zigzag weld the stresses that are produced are so varied that there is no possibility of a concentration of stress in any one direction, which would be troublesome. Finally, as will now appear the remaining stresses can be relieved by reheating, without subjecting other portions of the weld to compression stresses, which in turn would become tension stresses when cool.

In order further to relieve the weld of contraction while setting. that is to say the angular sections between the tackings, it is desirable to reheat the body of the metal by the flame or otherwise opposite the sections,

approximately at the regions enclosed by the dotted lines 3 This urges the metal toward the weld and protects the same until it has become permanent.

A. complete joint is indicated between the plates a a and in section in Fig. 2. The actual melting of the bottom and sides of the trough and the manipulation of the molten metal will follow accepted autogenous or electric welding practice. The weld is filled in the regular manner by adding similar or dissimilar metal from a rod held in the blowpipe flame, in the case of flame welding, or from a rod held in the arc, if the seam is welded electrically, or from the material of the electrode itself. The finished joint is not only substantially relieved of contraction strains, but is also stronger for all purposes than a straight joint, being composed of multiple diagonal sections running in both directions. Effectively, such a weld is stronger than the original metal.

Making permanent joints in other fabricated forms does not differ materially-from the case of plates. Figs. 3 and 4 show joints in readiness for welding.

The method may be used with advantage for uniting either similar or dissimilar metals.

What I claim as new is:

1. The method of obtaining permanent butt joints in fabricated forms, which comprises providing the parts to be united with interfitting indented edges consisting of tapering, substantially triangular projections and alternating recesses, and uniting said edges by fusion. whereby a saw-toothed welded joint is obtained consisting of multiple diagonals running in alternately angularly related directions across the neutral or center line of the seam. v

Q. The method of obtaining permanent butt joints in fabricated forms, which comprises providing the parts to be united with interfitting in'dented edges consisting of tapering. substantially triangular projections and alternating recesses the sides of which are substantially to, the general direction of the joint, and uniting said edges by fusion, whereby a saw-toothed welded joint is obtained consisting of multiple diagonals running in alternately angularly relateddirections across the neutral or center line of the seam.

3. The method of obtaining permanent butt joints in fabricated forms, which comprises providing the parts to be united with interfitting indented edges consisting of tapering, substantially triangular projections and alternating recesses, which when matched form a saw-toothed seam composed of diagonals running in alternately angularly related directions across the neutral or center line. of the seam, tacking the matched edges by fusion substantially midway of the diagonals along the neutral or center line of the seam, and thereafter tusing the edges together throughout the remainder of their extent.

4. The method of obtaining permanent butt joints in fabricated forms, which comprises providing the parts to be united with inte-rfitting indented edges consisting of tapering, substantially triangular projections and alternating recesses, which when matched form asaw-toothedseam composed of diagonals running in alternately angularly related directions across the neutral or center line of the seam tacking the matched edges at two or more initial points. substantlally midway of reversed diagonals,

so that the strainsbalance and the parts are held in proper relation, then tacking the other diagonals at approximately their middle points, along the neutral or center line of the seam, and finally completing the welding of the seam.

5. The method of obtaining permanent butt joints in fabricated forms, which comprises providing the edges of the parts to be united with interfitting tapering projections and recesses having diagonal sides, matching the edges, tacking the crooked seam by fusion at intermediate regions at the diagonals, and thereafter completing the welding of the seam.

6. The' method of obtaining permanent butt joints in fabricated forms, which comprises providing the edges of the parts to be united with interfitting tapering projections and recesses haying diagonal sides, matching the edges, tacking the crooked seam by fusion at intermediate regions of the diagonals, thereafter welding the crooked or V-shaped seam portions between said re .gions, and reheating the body of the metal opposite said crooked seam portions before the same have set.

7. The method of obtaining permanent butt joints in fabricated forms, which comprises providing the parts to be united with beveled and dia onally indented edges, matching said edges, tacking them by fusion at the regions along the neutral or center line of the seam, and thereafter completing the welding of the sea-m with addition of metal.

8. In the production of a permanent butt joint between fabricated form portions, the steps which comprise juxtaposing two edges of interfitting formation to form an indented seam, tacking said seam at the intermediate regions of the indentations, and thereafter welding the crooked seam sections between said regions.

9. In the production of a permanent butt joint between fabricated form portions, the steps which comprise juxtaposing two edges of interfitting formation to form an indented seam, tacking said'seam at the intermediate regions of the indentations, thereafter welding the crooked seam sections between said regions, and reheating the body ing of the seam by fusion with addition of metal.

11. A permanent butt joint comprising indented edges composed of tapering projections and intervening recesses matched and fused together in a welded seam composed of diagonals alternately reversely inclined to the neutral or center line of the seam.

12. A permanent butt joint comprising indented matched edges fused together in a substantially saw-toothed welded seam composed of diagonals alternately clined at approximately or center line of the seam.

13. A fabricated structure comprising plates having saw-toothed edges interfitted and fused together, presenting a welded seam substantially all portions of which are diagonal to the i'general direction of the seam.

JAMES L. ANDERSON.

reyersely into the neutral

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2782862 *Mar 29, 1952Feb 26, 1957Gen Motors CorpPropeller blade
US2907572 *Jan 8, 1957Oct 6, 1959Lacy L DawkinsHigh freuqnecy tape recorder
US3364460 *Nov 9, 1964Jan 16, 1968Thomas & Betts CorpSeamed sleeve connector
US3908705 *Oct 19, 1973Sep 30, 1975Johns ManvilleInsulating cover with open pyramidal passageway projections
US5562312 *Jul 5, 1994Oct 8, 1996Grant Tfw, Inc.Discountinuous plane weld apparatus and method for enhancing fatigue and load properties of subterranean well drill pipe immediate the area of securement of pipe sections
US6552311 *Nov 20, 2001Apr 22, 2003The Furukawa Electric Co., Ltd.Highly gas tight chamber and method of manufacturing same
US7632180Feb 28, 2007Dec 15, 2009Cnh America LlcMethod of making a rotor for a threshing system of an agricultural combine
US7717640 *Oct 5, 2006May 18, 2010Yamazaki Mazak CorporationJoint structure of pipe
US7900741 *Aug 21, 2008Mar 8, 2011Toyota Jidosha Kabushiki KaishaTorque tube
US8079899 *Feb 21, 2011Dec 20, 2011Claas Selbstfahrende Erntemaschinen GmbhMounting component for securing a crop handling element to a separator rotor
US8496160 *Dec 19, 2008Jul 30, 2013Robert Bosch GmbhMethod for positioning two components using tack welds crossing the joint line
US9200730 *Mar 14, 2013Dec 1, 2015Tenaris Coiled Tubes, LlcFatigue resistant coiled tubing
US9500977 *Mar 30, 2015Nov 22, 2016Canon Kabushiki KaishaRoller member, roller supporting mechanism, and metallic shaft for forming an image with a laser
US20050184579 *Feb 25, 2004Aug 25, 2005Central Motor Wheel Of America, Inc.Vehicle wheel with disc forming outer tire retaining flange
US20080012311 *Oct 5, 2006Jan 17, 2008Tsunehiko YamazakiJoint structure of pipe
US20080207286 *Feb 28, 2007Aug 28, 2008Farley Herbert MRotor for a threshing system of an agricultural combine and method of making the same
US20090065284 *Aug 21, 2008Mar 12, 2009Toyota Jidosha Kabushiki KaishaTorque tube
US20110095071 *Dec 19, 2008Apr 28, 2011Michael KaeferleinMethod for positioning two components using tack welds crossing the joint line
US20110207511 *Feb 21, 2011Aug 25, 2011Berthold SchwersmannMounting component for securing a crop handling element to a separator rotor
US20140262337 *Mar 14, 2013Sep 18, 2014Tenaris Connections LimitedFatigue Resistant Coiled Tubing
WO1996001386A1 *Jun 27, 1995Jan 18, 1996Grant Tfw, Inc.Enhancement of fatigue and load properties of drill pipe
WO1999062669A1 *May 25, 1999Dec 9, 1999Elpatronic AgMethod for forming a sheet metal assembly and corresponding device and sheet metal set
Classifications
U.S. Classification403/270, 138/171, 138/157, 138/102, 228/178, 228/165, 228/227
International ClassificationB23K33/00
Cooperative ClassificationB23K33/006
European ClassificationB23K33/00B2