US1496360A - Construction of hollow metallic vessels - Google Patents

Description

June 3 1924.-

1,496,360 A. 5. WYBER CONSTRUCTION OF HOLLOW METALLIC VESSELS Filed May 28, 192] I W I I I\\ g Q W'I'I'Id 4 w M Q I I I I I A L HA] u 8 I o o c In" NH 7 i O o E o o O O E 'Nmmflmlmfl 4 1 Flq.4.

Patented June 3, 1924.

UNITED STATES" PATENT orris.

ADAMSON STENHDLUSE, W YBER, OF NEWCASTLErQN-TYNE, ENGLAND, ASSIGNOR 0F ONE-HALF TO B. & W. HAWTHORN, LESLIE & COMPANY, LIMTTE I), NEW- CASTLE-O-N-TYNE, ENGLAND.

CONSTRUCTION" OF HOLLOW METALLIC VESSELS. Application filed May 28, 1921. Serial No. H3312.

(GRANTED UNDER THE PROVISIONS OF THE ACT OF MARCH 3, 1921, 41 STAT. L. 1313.)

To all whom it may concern:

Be it known that I, ADAMSON STENHoUsE VVYBER, a subject of the King of the United Kingdom of reat Britain and Ireland, and residing at Newcastle-on-Tyne, England, have invented a certain new and useful Improvement in the Construction of Hollow Metallic Vessels (for which I have made ap plication in Great Britain August 9, 1918, Patent No. 129,488), of which the following is a specification.

This invention relates to the construction of hollow metallic vessels such as boiler shells, tanks, drums and the like, of circular, rectangular or other section, and has for its primary object to provide improved means for securing permanently the end plates of a boiler shell, for example, or the nd wall or walls of a tank, drum or other vessel, without the necessity for the use of rivets.

According to the invention, the metal plate or plates intended to form the lateral walls of the vessel is or are each locally reduced in thickness by formation on one face thereofof a groove or grooves adjacent to one terminal edge or to the terminal edges, the end plate or end plates being thereafter engaged in such groove or grooves and Welded to the plate or plates forming the lateral walls.

For a boiler shell, for example, the plate or each of the plates constituting the lateral walls may be formed with two grooves each adjacent to the relative terminal edge of the plate.

In practice, the groove or each groove is formed of a width to accommodate the margin of the end plate or end wall, the depth of the groove being such that the strength of the grooved plate is not unduly reduced, say more than it would be by provision of rivet holes.

The plate or plates forming the lateral walls having been grooved and, if necessary, rolled or otherwise shaped to the required curvature, and the periphery of the end plate or end wall introduced into the groove, the end plate or wall and the plate or plates forming the lateral walls are welded together, being preferably electrically welded, say by means of a fillet or fillets.

In the construction of a boiler, for example, the end plate is put in after the shell is connected by the butt-strap by taking advantage of the natural sag of the cylinder when the shell is resting on the ground; the groove being made tapered to facilitate the positioning of the end plate.

The groove is preferably made Wide so as to accommodate a sufiicient body of weld metal to back up the end plate.

Fig. 1 of the accompanying drawings is a longitudinal section of a boiler constructed according to the invention. Figs. 2, 3 and 4: illustrate details hereinafter referred to. Fig. 4 being a section on the line ab of Fig. 3. V

As shown in the drawings, the boiler shell comprises a plate 1 rolled to cylindrical form, and formed on the inner face with tapered grooves 1 adjacent to the terminal edges, the depth of the grooves being such that the strength of the plate 1 is not unduly reduced, say more than it would be by provision of rivet holes. Each groove is sufliciently wide to accommodate in the space between the end plate and the outer sid of the respective groove a body of weld metal l serving to back up the. respective end plate.

The peripheries of the end plates 2 having been engaged in the grooves the end plates 2 are welded to the plate 1 by means of fillets such as 3, as best seen in Fig. 2.

In practice the abutting lon itudinal edges of the plate 1 may be embraced for the greater part of the length thereof by butt straps 4, and welded together where they project beyond the butt straps (Figs. 3 and 4).

In other respects the boiler is of the usual marine type having the internal flue 5, smoke box 6 and return smoke tubes 7. 8, 8 denote stays connecting the smoke box to the rear end plate 2. 9 denotes the usual stiifening web for the smoke box. 10, 10 denote bolts connecting the smoke box to the web. 11, 11 denote stays connecting the end plates. 12 denotes a manhole door.

What I claim is A hollow vessel comprising a shell of metallic plating rolled to cylindrical form and formed on the inner face adjacent to each end of the shell with a tapered groove having the inner lateral wall normal to said face and the outer lateral wall inclined, end plates having their margins entered in th grooves, each end plate abutting on the inner lateral wall and being slightly spaced from the outer lateral Wall of the respective groove, wedges of Weld metal adapted to back up the end plates, each Wedge accommodated in the space between the respective end plate and the outer 10 lateral wall of the respective groove, and

fillets by means of which the end plates and shell are welded together.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ADAMSON STENHOUSE WYBER. Witnesses:

ISABEL RoLLo,

MAY Ross.

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