US1015180A - Fluid-tight expansion-joint. - Google Patents

Description

C. E. HEITMAN. FLUID TIGHT EXPANSION JOINT.

APPLIOATION FILED JAN. 19, 1910.

1,015,180. Patented Jan.16,1912.

WITNESSES: IIVVENTOR 67/40/ 5 ZasZbzzf/fiiimw V ATTORNEYS will be perfectly fluid tight, and which will an escape past the str p.

so ing drawings, forming a part of this specias a portion of a conduit and tube sheet in con- 4o somewhat modified arrangement of packing ,ll N lTED STATES PATENT OFFICE.

CHAR-LES EASTO'N HEITMAN, OF NEW YORK, N. Y., ASSIGN'OR T 0 HERMAN LANGE,

OF DORCHESTER, MASSACHUSETTS.

\ FLUID-TIGHT EXPANSION-JOINT.

llMldJSU. Specification ofLetters Patent- Patented 16, 1912.

Application filed January 19, 1910. SerialINo. 538,826.

To all whom it may concern: except to the Smokestack, and that such Be it known that I, CHARLES EAs'roN gases and smoke be 'prevented from in any HnirMAN, a citizen of the United States, way-gaining access to the interior "of the and a resident of the city of New York, tubes.

a borough of Manhattan, in'the county and My improved joint serves to connectt-he State of New York, have invented a new end of the tube or pipe to theend'wall'of and Improved Fluid-Tight Expansionthe casing, that is, the tube sheet or crown Joint, of which the following is a full, clear, sheet, so as to positively prevent any escape and exact desc iption. v of gas through said wall orsheetfromihe m Thi i v ntion relates to certain improveinterior of the chamber through which the 66 ments in joints for connecting pipes or co-ntubes pass. It is, of course, evident that duits to walls, partitions, or tube sheets, my improved joint may be used in various and the object of the invention is to form other types of apparatus in which tubes a very simple and efficient joint which and supporting Walls are employed, and I therefore do not Wish to be limited'to any 70 particular application of the invention.

My invention may assume various differ ent forms, but in the form illustrated in Flg. 1, I employ a tube 10, which'servesas an air tube in a heater of the character sabove referred to. This tube adjacent its end, extends through the wall 11 andis sufficiently loose therein, so as to permit the tube to move lengthwise a limiteddista'nce during the expansion and'the contraction of the tube when the latter is heated and cooled. The outer end .of the tube is exteriorly threaded, and a collar 12 interiorly threaded is fitted into the end of the tube lOoutside of the wall 11. An annular sheet metal expansion ring, band or strip 13, has one edge thereof fitting the outer peripheral surface of the collar 12, and is permanently secured thereto by a second collar 14, which is heated and shrunk onto the collar 12, to grip the edge of the band 13 therebetween. The sheet metal forming the expansion ring, band or strip 13, extends outardly from the wall 11 and is folded back upon itself to form an outer portion 15 surrounding the collar 1 1 and concentric therewith. The free edge of this outer portion 15 is bent outwardly, so as to form an outer flange 16 lying in a plane parallel to the outer surface of the wall 11, and is firmly secured to the latter. An asbestos packing 17 may be inserted between the flange 16 and the wall 11, and bolts 18 may have their heads countersunk on the inner surface of the wall 11 and may extend out through the asbestos packing and the flange 16, to re ceive nuts 19 serving to bind the flange in position. By this construction, gas is positively prevented from escaping from between the flange 16 and the wall, and the permit of a relative movement of the tube or conduit, and the wall or plate. Instead of using a cap about the tube,,which not only impedes the free movement of the lata ter, but which often becomes disposed or deranged, so as to leak,-I employ an annularstrip of sheet material, the opposite edges of the strip being so secured to the tube and plate that no liquid or gas can possibly The invention inuolves the important features of construction hereinafter referred to, and particularly defined inthe claims.

Reference is'to be had to the accompanyfication, in which similar characters of reference indicate corresponding parts in all the figures, and in which 1 Figure 1 is a longitudinal section through nect-ion with which a packing constructed in accordance with my invention is employed; Figs. 2 and 3 are sectional details similar to a portion of Fig. 1, but showing a strips. My invention is particularly: adaptable for use in connection with that type of heater in which a large bank of pipes or 45 tubes are supported with their ends attached to walls or tube sheets, so that when a fire is built below the tubes, the gases of combustion may pass up through the casing around the tubes to the chimney, while air may to pass either' by natural or forced drafts through the tubes and to the space to be heated or dried by the heated air. It is particularly desirable that the smoke and gases of combustion surrounding the tubes 55 be prevented from passing out of the casing is threaded to the tube gas escaping through the opening in the wall 11 around the tube 0, cannot pass the expansion ring. As the 'tubeexpan'ds or contracts, the fold of the sheet metal upon itself" 12, and as the'collar pansion ring. 15

metal during the expansion or contraction of the tube, as I, may rely simply upon a folding. In the form shown in Fig. 2, the

hat as the tube is expanded or y v be folded at an angle rather than being rolled. Inthis case, 1 the fold of'the metal also serves to conceal the. collar 12, and it may in fact be brought closely adjacentthe collar, so as to completely conceal the latter, as well as conceal the end of the tube 10."

' fold or bend of the metal extends mwardly from the other part 15,

but I may, if desired, extend the-bent pore expansion c ring 13* has a band or fold 20, extend mg outwardradially this case, ther'eis an 40 v i not of tis only. essential lace ; lar, a second collar shrunk upon said-edge to do not rely upon a rolling of the sheet d partially as indicated in Fig-3.v In

an opening,

a ring of of said colhold the latter to said the other edge of said ring. being b edge, said tube sheet and said packing, for securing the ring and packing in position.

he combination with a tube and a tube sheet, of a fluid-tight expansion oint,

between, one of said collars being detachably secured. to said tube, means for securing the other edge of said sheet metal to said tube sheet. 1

3. The combination with a tube sheet and a tube movable longitudinally therethrough, of a fiuid-tight expansion expansion ring 't'ermediate connecting portion, means for I y e of the inner one of portions to the periphery of the tube to form a. fluid-ti ht joint, and means for rigidly securing t is edge of the outer one of said cylindrical portions to the surface of the tube sheet-to form a'fluid-ti'ght joint, t e inner and outer portions 'of'said ring 'eing relatively movable upon an expansion or contraction of the tube.

' he combination of a tube sheet having a tube extending loosely h saidopening, a packing ring engagsheet and concentric to said tube, sheet metal provided with a flan e engaging said'packin ring, said metallic ring being provided with another portion bent bac upon itself, and a collar mounted upon said-tube and engaging said portion thus bent back upon itself.v v

In testimony whereof I have signed my name to this specification in the presence of ing Witnesses.

throng two subscrib 4. CHARLES 'EASTON HEITMAN. Witnesses. CLAIR FAIRBANK, PHILIP D. ROLLHAUS.

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