|Publication number||US2196464 A|
|Publication date||Apr 9, 1940|
|Filing date||Jan 11, 1939|
|Priority date||Jan 11, 1939|
|Publication number||US 2196464 A, US 2196464A, US-A-2196464, US2196464 A, US2196464A|
|Inventors||Johanson Adolph T|
|Original Assignee||Milton E Page Jr|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (2), Classifications (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Apm'al 9, 1940.
A. T. JOHANSON METHOD FOR BOILER REPAIRS Filed Jan. 11, 1939 2 Sheets-Sheet l INVENTOR.
A T. JOHANSON METHOD FOR BOILER REPAIRS 2 Sheets-Sheet 2 Filed Jan. 11, 1939 1 N VENTOR. Zp/z iUofzez/vfion,
April 9, 1940 Patented Apr. 9, 1940 UNIT ED' "STATES, PATENT OFFICE one-half to Milton E. Page, Jr., Chicago,' lll. Application January 11, 1939,-Serial No. 250,272
My current invention pertains toan improved method and means for repairing metallic boilers and similar structures, such, for example, as are commonly employed for heating purposes, a leading aim and prime object of the invention being the provision ofa procedure which'facilitates and hastens the repair and yet'permits it to be accomplished at relatively low cost.
Metallic boilers, which are usually located in the basements of buildings, are subject to serious damage by rust, not'so much by reason of the ordinary use of the boiler, but because basements are likelyto become flooded through rains, backing up of water throughdrains, etc., and such 5 conditions rust out thelower' parts of the boiler,
requiring the installation of a new one or the proper and adequate reconditioning of the old one. i
The-present invention,'therefore, relates to a new and improved method of repairing the lower or base portions of such damaged boilers.
This is accomplished according to the basic principles of this invention by cuttingaway the injured rusted parts of the boiler, preferably progressively, and replacing the removed parts by new efficient ones, while the'boiler as a whole remains properly and adequately supported by the remaining unremovedv parts and/or the new portions. 1
p The practice of my invention according to its present preferred procedure is illustrated in the accompanying drawings forming a part of this specification and throughout the 'views of which like elements or members have been designated by the same reference numerals.
In the drawings: Figure 1 illustrates a metallic boiler in perspective and the dotted line thereon indicates the division between the lower rusted section thereof 40 and'the upper eflicient portion of the boiler;
Figure 2 is a view indicating a part of the new procedure and shows in plan two of the new corner-members Figure 3 is an elevation of such a corner 3 Claims. (ores-457.4)
To accomplish this desired object, four cornerelements are made in the manufacturers plant at a cost relatively small as compared with attempting to construct them on the spot,
Each such sectional corner-element comprises a right-angle'outer metal-plate I I, a corresponding. inner right-angle plate l2 spaced inwardly away from such external plate I I a distance cor- "responding to that of the boiler, a right-angle base-plate l3 Welded tothe lower margins of 10 plates H and l2,,and staybolts l4, I4 fastening the plates together at a suitable distance above the base-plate.
I The repair'is preferably, but not necessarily, made in the following manner. I I I One lower corner portion of the damaged boiler is cut away, as by an acetylene-torch, and removed, and, while the boiler is supported by its remaining parts, one such corner-element of proper dimensions is introduced into place as a substitute for the removed corner-section, and the upper edges of both of its plates are welded to the ,loweredges of the corresponding plates of the boiler v 1 Thereupon, another corner-section is removed \25 in similar manner and replaced by a like new corner-element, and then the remainder of the lower section of the boiler between the replaced corner-elements is cut away and removed, where'- upon an outer .plate l5 of suitable length and 30 height and having an inwardly-extended, lower marginal-flange I6 is introduced into position and its top edge is welded to the lower edge of the outer, plate just above it, its upright edges are welded to the ends of the two-corner-elements, 5
and the ends of its flange are welded to the ends of the bottom-plates of the pair of corner-members.
Thereafter, acompanion inner plate I1 is 10- cated in place and its edges welded to the flange 49 16, to the edges of the inner, bent plates I2, l2 of the two corner-members, and to the lower edge of the boiler-plate above it.
After this has been accomplished, another corner portion of the boiler is cut away and taken out and a new one put in its place, these actions occurring while the boiler is supported in part by its damaged sections and partially by the already inserted, fitted and secured newparts, whereupon additional external and internal plates l5 and I! 50 are introduced and Welded in place after the parts which they are to replace have been eliminated, and so on until the boiler is completely repaired or reconditioned.
' As will be readily understood, the exactorder 2 t p g 2,196,464
or sequence in which the sections of the boiler are cut away and cast aside and the new parts introduced and welded in place is of little importance' I and such operations are subject to change as occasion or preference dictates, the important point being that the corner-members are all 'pre-formed and fabricated and are not made on the spot, whereby substantial expense and material time is saved in repairing the boiler.
The instant invention, set forth in the appended claims, is subject to various changes and modifications without departure from the heart and essence of the invention and without the loss or sacrifice of any of its material benefits and advantages.
I claim: v p
1. In the process of repairing the lower hollow walls of damaged metallic boilers, the steps of successively cutting away and removing damaged sections of the lower portion of the boiler walls and replacing'the same by new sections in a manner an-cl in any order whereby the :boiler remains supported in position partly by original sections of the boiler walls and partially by new sections during at least at portion of the repairing operation, the corner-sections of the boiler walls being replaced by premade open-top corner-members, each. comprising an external right-angle pl'ata'an inner right-angle plate spaced inwardly from said external-plate, a bottom-plate secured to the lower margins of said external and inner plates, .said external :and inner plates above said bottom plate being fastened together in spacedapart relation by staybolts,wel ding the top edges of both of said external and internal right-angle plates to the lower edges of the corresponding I plates of the boiler, filling in the spaces between said corner-members by intervening outer and inner spaced-apart plates one of which latter plates *has a flange, constituting the bottom of such intervening portion, welding said flange to the other plate of said intervening p rtion, weld-' ing the ends of said intervening outer and inner plates to the corresponding plates of the two adjacent corner-members, welding the ends of said intervening flange totheends of the bottom plates of said two adjacent corner-members, and welding the top edges-of said outer and inner intervening plates tothe lower edges of the corresponding plates of the boiler, said steps of welding said intervening portions being performed in any order. q
2. The process set forth in claim 1 in which said flange is an inwardly-extended flange on said outer intervening plate.
3. In the process of repairing the lower hollow walls of damaged metallic boilers, the steps of successively cutting away and removing the damagedsections of the lower portion of the boilerwalls and replacing the same in succession by new sections in such manner and in any order that the boiler remains supported in position while undergoing the repairs partly by original sections of the boiler-walls and partially by new sections during at least a portion of the repairing operation, each corner-section of the boilerwalls being replaced by a premade open-top corner-member, each comprising an external rightedges of the corresponding plates of the boiler,
welding said flange of each intermediate-section to the other plate of said section, welding together the ends of said external and internal rightangle plates :of each corner-section to the ends of the inner and outer plates of the next. adjacent intermediate-sections, welding together the. ends of the bottom-plate of each cornersection and the ends of the bottom flanges of the 1 next adjacent intermediate-sections, and welding 'thetop edges of said outer and inner plates of each intermediate-section to the lower edges of the corresponding plates of the boiler, said'removal of damaged sections of the .boiler, their replacement by said corner-sections and intermediate-sections, and said welding operations being performed in any order consistent with the support of the boiler in its original position during .such operations.
ADOLPH T. JOHANSON.
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4979294 *||Jul 17, 1989||Dec 25, 1990||The Dayton Power & Light Company||Boiler tube repair method|
|US5193257 *||Jul 9, 1990||Mar 16, 1993||Dayton Power And Light Company||Boiler tube repair apparatus|
|U.S. Classification||29/890.31, 29/402.13|