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July 23, 1946‘ M. R‘ESEK _ ‘ 2,404,530 ~ TELESCOPING FLUE '2 SheI-etS-Sheet 1 Filed July 14, 1945 - INVENTOR. MARC P£$5K . B ‘Av-mews)’: July 23, 1946. M. RESEK ' 2,404,530 TELESCOPING FLUE Filed July 14, 1945 2 Sheets-Sheet ,2 Had" ,24 INVENT0R,16 _M4ec $555K ~ 2,404,530 I Patented July 23, 1946 UNITED STATES PATENT OFFICE TELESCOPING vFLUE Marc Resek, Cleveland Heights, Ohio, assignor to Perfection Stove Company, Cleveland, 0hio,‘a ' corporation of Ohio Application July 14, 1943, Serial No. 494,743 12 Claims. (Cl. 126—280) 1 My present invention is a telescoping ?ue for use with combustion apparatus, and it was de veloped vin conjunction with’ the liquid fuel heat ing apparatus that forms the subject matter of 2 ' ~ ~ . scoping ?ue in contracted condition and connect ed to .a vehicle engine heater, a part of the en—_ glue and adjacent portions of the vehicle struc ture being shown in dot-and-dash lines;- Fig. ‘2 my copending application Serial .No. 479,038. The apparatus of said application is intended is a similar view with the. engine and all but a fragment of the vehicle hood omitted and with primarily as a heater for internal combustion en— the ?ue in extended condition‘; Fig. 3 is a per spective view of the ?ue cap and the adjacent gines of automotive vehicles, such as motorized military equipment, including trucks, tanks and portion of the upper flue section to which the ‘cap 10 is attached; Fig.4 is a central vertical‘ section the like. ' ‘ > Where the heater is installed in the engine through the ?ue, substantially on the line 4-4 of compartment of a truck or like vehicle beneath Fig._l, showing the ?ue contracted and with the the. hood, it is desirable, for obvious reasons, upper left hand corner in elevation, thisand the following figure being on the same scale and one when the heater is placed in condition for use, to have the ?ue by which the products of combus 15 considerably enlarged over that of Figs. 1 and 2; tion are carried o?'extended to a considerable Fig. 5 is a central vertical section through the height above the plane of the hood, incidentally through an opening in the hood; and, when the heater is not in use, to have the ?ue contracted ?ue, in a plane at right angles to that of Fig. 4, showing the ?ue extended, parts of the ?ue in this and in the preceding view being broken out beneath the hood and, preferably, said opening 20 in order to shorten the,vviews, and Fig. 6 is a closed by a shutter or other suitable means. The transverse section through, the joint between the nature and purpose of the heater requires its use top and middle sections ‘on a further enlarged only when the vehicle is standing,v wherefore, scale, the plane of section being indicated by the when the vehicle is in operation, the ?ue is con tracted and entirely out of the way. The more general objects of the invention are to provide a telescoping ?ue that is substantial line 6—6 o-fFig. 5. e r , a I - The ?ue, as herein illustrated, comprises three tubes or sections, although it may consist of two, or of any greater number that is practical. The and relatively simple in construction, and that bottom or base section is designated I, the middle can be easily and quickly extended and contract or intermediate section 2, and the top- section 3. ed; also, to provide a ?ue comprising telescoping 30 The bottom section has a side opening 5 (Fig. 5) sections that are connected together, when the near its lower end over which is disposed a shell 6 ?ue is extended, by ?rm, interlocking and leak proof joints and the sections of which, when the ?ue is in any other than fully extended condi whose edge portion is suitably connected, as by welding, to the section I about said opening; The shell has a bottom wall ‘I provided with an open: tion, loosely inter?t so that each retractable sec 35 ing 8 that is surrounded by a depending collar 9 tion may readily slide within the one next larger through which the ?ue has communicative C011‘. in diameter and with su?icient clearance to avoid nection with the combustion chamber of the the scraping off of an appreciable amount of soot heater it). Details of this heater are disclosed in my application aforesaid. . . that has been deposited on the interior of the larger section. 40 The bottom portion of the ?ue, below said Another object of the invention is to provide a opening 5 of section I, constitutes a soot collect telescoping ?ue having a soot collecting basin or ing basin or trap, and the same is provided with trap at its lower end into which any soot that is a bottom closure l5 shown in section in Fig; 4 scraped o? during the contraction of the flue will and in elevation in Fig. 5, the closure desirably collect and from which it may readily be dis 45 being formed from sheet metal with a peripheral charged; and a further object is to provide a clo ?ange it that is adapted to seat against the sure‘for said basin or trap that automatically bottom of the section I. A cylindrical portion I'l closes when the ?ue is extended and which like rises from the inner edge of the ?ange ‘ l6 vand wise opens each time the ?ue is contracted there merges into a frusto conical part l8 having a by to discharge the contents of the basin or trap. 50 closed top. The closure is guided within‘ the The foregoing objects, with others that will be tube by the vertical branches [9 of members 20, apparent from the following detailed description desirably formed from strap metal and welded or of the invention, are attained in the construction otherwise fastened to the closure, and at' their illustrated in the accompanying drawings. where tops ‘said members are provided with seats 2'! vin vFig. 1 is a side elevation of my improved tele- '88 against which the ‘lower ends of the intermedié. 2,404,530 3 ate and top ?ue sections 2 and 3 bear'when the vflue is in contracted condition, as'will herein after more fully appear. "When theflue is ex tended, as shown in Figs. 1 and 5, and the weight of the ?ue sections 2 and 3 is thus removed from the seats 2|, the closure I5 is lifted by a ‘spring 23 and is heldby said spring with its ?ange I6 against the bottom of the section I. This spring bears at its upper end against the circular top wall of the closure I5 and at its lower end surrounds a positioning boss 24 of a spring ‘seat 25 that consists of an annulus that is desir-r present joint includes seats that are formed by the underneath side of the top ?ange 44 of the locking ring 40 and the shoulder between the body portion of section 3 and the enlarged portion 42 thereof. In the present case,’ the ?ange 44 of the locking ring is flush with the top of the ?ue section 2, instead of being at a, higher elevation like the ?ange 3| of the locking ring 30 of the ?rst described joint. A cap 50 is fastened to the upper end of the top ?ue section 3, as by having a collar 5| thereof inserted into the upper end of said section and ably slightly less in diameter than the internal ‘ parts of said section (one of which is designated 52 in Fig. 4) depressed inwardly into apertures diameterof the lower end of the closure I5. The lower convolutions of the spring 23 and the 15 53. of said collar. The body portion of the cap 55 is’ frusto conical'in shape and is joined with spring seat 25 are shown in section in Fig. 4, 1 the collar 5I at its inner edge and at its outer while in Fig. 5 the same, parts are shown in .ele vation.' The seat 25 is carried by the central, , edge is surrounded by a horizontal ?ange 55. The ?ange is cut away or sheared off at one side portion of a U-shaped bail 26 whose ends are connected by pivot members 21 to the opposite 20 along a straight line, as shown at 56, and adja cent one end of vits straight side the ?ange is sides of the flue section I‘. The bail 26 is adapted to beheld inpa position with the spring seat?25 , ‘ deformed to provide a detent 51 and a stop 58, between which is a shallow socket'59. Lugs 50 in vertical alignment with the flue by a set screw are incorporated in the cap and areshown as ris 28 that is threaded through one of the side branches of the bail and is arranged to engage 25 ing from diametrically opposite portions of the ?ange 55 to facilitate turning the 'cap for a pur the side of the ?ue section I. By loosening the pose hereinafter appearing. ' , screw 28, the bail is free to be swung to a position Arranged to cooperate with the flange 55, when to one side of the ?ue, as shown in doted lines‘ in the ?ue is contracted, is the inturned end of a Fig. 5. hook 62 whose base portion 63 is welded or other , Fitted within the top of the ?ue section I, and wise fastened to the ?ue section I. -' fastened thereto, as by welding, is a locking ring ' 30 that is surrounded at its upper end by an in wardly directed ?ange 31, the underneath surface of which constitutes‘ a seat I“. The peripheral ‘wall of said ring is provided with a number, de sirably three, of L-shaped slots 32 having rela tively widemouths, as indicated in Fig. 5; and ‘the bottom edge 33 of the lateral branch of each slot is inclined upwardly at a slightrangle to the ' The ?ue is desirably anchored in the region of the- upper end of its base section I to a part of the vehicle structure as, for example, the en gine. In the present‘ case a band 55, that en circles the ?ue section I, is fastened to a bracket 66 that is secured to and rises from the engine E. The hood H of the vehicle has an opening h in vertical alignment with the '?ue', and said opening horizontal in a direction away from the entrance 49 is adapted to be closed by a shutter h’ when the ?ue is contracted. The parts are illustrated in end of the slot. Also, the wall 34 of said entrance this condition in Fig. l. The shutter is shown ‘end, opposite the lateral branch, is inclined up as connected by a pivot member h2 to the hood, wardly and at a substantial angle toward said and is provided with a ?ngerjpiece 723 that pro branch, for a purpose hereinafter appearing. jects through the opening it. By means of the The intermediate ?ue section 2 has a circumfer ential'porti'on 35 adjacent its lower end that is jenlarged‘to'?t within thelocking ring 55, a shoul ‘der being thus provided between the body portion ‘of the tube and said circumferential portion that constitutes a seat 2a for engagement with the ‘previously mentioned seat Ia‘. Projections 31 on the portion 35 of section 2 are arranged to enter ?nger piece 7113 the shutter'may be swung to one side'to uncover the opening h; so that" the ?ue may be extended through said opening, as illus trated in Fig. 2. ' ' ‘ :When it is desired to contract the ?ue, the section 2 is turned in a‘ direction (counterclock wise according to the present construction) to re move projections 51 from the lateral branches of the slots'32' as said section is extended and, if nec the L-shaped. slots 32 of the locking ring 35, essary, turned to register the projections with the slots... As the projections enter the slots they 55 when the section 2 may belowered into the base section I, the initial downward movement of sec engage the walls 34 a'nd‘are de?ected into the tion 2 withdrawing its enlarged circumferential lateral “branches, this action initiating the turn portion'35v from the locking ring. After this ini ing of‘ section 2 in the proper direction to shift tial movement, the'section 2 descends freely into ‘the projections 3'! into said lateral branches and ‘cause the projections to ride up the inclined edges 60 section I until its lower end engages the seats 2I of the members 20 that are incorporated in ' ‘33.; thereby to urge the aforesaid seats Ia and 2a the‘c'losure I5. In the meantime, the projections ‘into ?rm contact with each other; 43 of'the top section 3 are disengaged from the , The projections 31 desirably consist of the lateral branches of the slots M of the locking ring headset rivets, ‘one of which is shown in section 40' so that the top section may be lowered into in'Fig; 6, the shanks of the rivets being extended ‘through apertures in the portion 35 of section 2 the intermediate or middle section 2,‘the‘ top- sec‘ tion, in turn, taking itsplace upon the seats 2| and upset onthe inner side thereof. of the aforesaid members 20. The retractable ."A joint‘ substantially like that above described sections are then further depressed so as to lower occurs between‘ the upper end of section 2 and the lower'end‘of section 3. The locking ring of ' theyclosure I5 in opposition to the spring 23, the top ?ue section being orientated to a position ‘the present joint-ris‘designated 40, one of the L wherein the cut away part 56 of the ?ange-55 Ishaped'slots of which is shown at M in Fig. 5, will pass the end of the hook 62. 'With the ?ange land; the enlarged circumferential portion 42 of 55 below‘ the plane of said‘ end of the hook, the the , ?ue section 3' isv equipped with projections, top‘ section is turned in the direction designated the one shown in Fig; 5 being designated 43,. The 2,404,530 .15 ‘. .6 inner sections being surrounded in' the vicinity of said portions, respectively,’ by inwardly'and by the legendron the?ange 55, clearly shown in ‘ Fig. 3, ‘so as to, cause the hook to override the 'detent 51 and assume a» position in line with the outwardly extending seats that engage each other and substantiallyseal the joint between the sec~ tions when said projections occupy locking posi socket. 59, the parts being arrested in this rela tion by engagement of the stop 58 with the in turned end of the hook. When downward pres; tions within said slots. . . 3. A telescoping ?ue comprising atleast two sure .on the cap 50‘is relaxed, the spring 23 will lift the retractable?ue sections and hold the cap sections, one of which ?ts within the other 'With against the hook, appreciable clearance when the sections are in , ' ‘ In the retraction of the ?ue sections‘ 2 and 3, 10 any but fully extended condition, a locking ring soot will likely be loosened from the inner sur secured within one end of‘ the outer sectionythe same being provided with a series of L-shaped faces of the different sections and fall into the slots, the outer end of the locking ring having an soot collecting basin or‘ trap at the bottom of' the inwardly directed ?ange providing ‘a seat, the ?ue. Now, as the retractable sections are fully depressed, the closure I5 will be opened and most 15 inner section having a circumferential portion adjacent its opposite endthat is of increased ex of the soot will drop by gravity through the open ternal diameter and of a size to ?t rather closely ing between the lower ends of the ?ue sections said locking ring, there being a shoulder between and the closure l5. Thus, each time the ?ue is the body portion of said inner section and said contracted, the basin or trap will be automati 20 circumferential portion providing a seat ar-. cally emptied. , ranged for engagement with the previously men When it is desired, for any reason, to remove ‘the closure l5, the lower end of the spring 23 is . tioned seat, and projections extending from said circumferential portion that are arranged to oc disengaged from the boss 24 of spring seat 25 and cupy said slots when the ?ue is in extended con the spring is withdrawn from its position between said ‘seat and the top of the closure I5. Now, 25 dition, certain walls of said slots that are adapted to be engaged by said projections being inclined upon loosening the set screw 28, the bail may be in a direction to produce relative axial movement in Fig. 5, and the closure I5 dropped. This ar between thesections as one section is turned with rangement also facilitates assembly of the tele— respect to the-other such as will urge said seats ' scoping sections of the ?ue because, with the bail 30 into ?rm contact with each oher. 4. A telescoping ?ue comprising relatively mov~ and spring seat swung to one side, the ?ue sec tions 2 and 3 may be inserted through the b0t~ able ?ue sections and incorporating a soot col lecting basin having a discharge opening, closure tom of the base section I and, with this done, means for said opening biased toward closed po the cap 50 may beattached in the manner already sition, and a part connected to and movable in described to the top end of section 3. unison with said closure means, said part being Having thus described my invention, What I engaged and shifted by certain of said sections claim is: 1. A telescoping ?ue for combustionapparatus during contraction of the ?ue thereby to move the closure means to open position. i ' having adjacent its lower end means for com— 5. A telescoping ?ue comprising relatively mov municatively connecting it to such an apparatus 40 able ?ue sections and incorporatinga soot'col and being open at the top and unobstructed be lecting basin having a discharge opening, a clo tween its open top and the aforesaid means, said sure for said opening,’ means tending to retain ?ue comprising at least two sections, oneof which the closure in closed position, and a part con ?ts within the other with appreciable clearance when the sections are in any but fully extended 45 nected to and movable in unison with said clo sure, said part being engaged and shifted by cer condition, the outer section having a circumfer tain of said sections during contraction of the ential portion adjacent one end- of reduced in ?ue thereby to move the closure to open position ternal diameter, and the inner section having a swung to one side, as illustrated in dotted lines circumferential portion adjacent its opposite end of increased external diameter and of a size to fit rather closely said portion of the outer section, the outer and inner sections being surrounded in the vicinity of said portions, respectively, by in wardly and outwardly extending seats, and inter engaging means on the two sections that cooper in opposition to said means. 50 . 6. A telescoping ?ue comprising a base section and one or more retractable sections, the base section having a side aperture spaced above its lower end for communicative connection with a combustion apparatus, the portion of the base 55 section below said aperture enclosing a soot-col lecting basin, the section being provided With an ate when the ?ue is extended and said sections opening through which soot may be discharged, a are relatively rotated for urging ‘said seats into closure for said opening, means tending to re ?rm contact with each other, said means consist tain said closure in closed position, and means ing of radial projections on one section and parts on the other section having circumferentially ex 60 engaged by the retractable section or sections when the ?ue is contracted for shifting said clo~ tending cam surfaces wherewith said projections sure to open position in opposition to the ?rst engage. mentioned means. 2. A telescoping flue comprising at least two 7. A telescoping ?ue comprising a base section sections, one of which ?ts within the other with 65 and one or more retractable sections, the base section having a side aperture spaced above its lower end for communicative connection with a ?tted within one end of the outer section, the combustion apparatus, the portion of the base same being provided with a series of L-shaped section below said aperture enclosing a soot-col slots, the inner section having a circumferential lecting basin, the section being provided with an portion adjacent its opposite end of increased ex-~ opening through which the soot may be vdis ternal diameter and of a size to ?t rather closely charged, a closure for said opening, means tend said locking ring, projections on said portion that ing to retain said closure in closed position, fur are arranged to occupy the aforesaid slots when ther means engaged by the retractable section or sections when the. ?ue is contracted for shifting the ?ue is in extended condition, the outer and appreciable clearance when the sections are in any but fully extended condition, a locking ring 2,404,530 1.7. said closure to: open position in opposition to the ?rst mentioned means, and a releasable instru-j mentality for holding the retractable 58813101101“ a» spring? having its lower endlengaged with said positioning means and resting upon said seat and sections in retracted position. compressed between the ' same and the closure. i -_ m'eans‘carried by thecentral portion of said bail, ' 8. A telescoping ?ue comprising a base section and a retractable portion, the base section being openat its lower end and having an aperture in its' side spaced above said lower end andthrough which the ?ue is adapted to have communica and parts on the closure arranged to be engaged by the lower ends of the retractable sections when the ?ue is in retracted condition for depressing the closure in opposition to said spring and thus tive connection with a combustion apparatus, a, 10 11. A telescoping ?ue comprising a base sec tion that is open at the bottom, and a plurality of nesting retractable ‘sections that are adapted to be'contracted into the base section, the base sec tion having an opening in'its side spaced above its lower end through which the ?ue- is adapted to be communicatively connected with ‘a combus tion apparatus, the ?ue enclosing a soot-collect ing basin below the plane of said opening, .a clo sure for the bottom of, the base‘section, a. spring tending to retain the same in closed position, the closure having a part engaged by the lower ends of the retractable sections when the ?ue is in contracted condition for opening said closure in closure for .the lower end of the base section, a springv tending to retain the same in closed posi tion, the closure including a part arranged to be engaged by the lower part of the retractable por tion whereby to shift the closure to open posi~ tion against the tension of said. spring-when the‘ ?ueis contracted, means carried by the top of the base-section'that is arranged for holding engage ment with the top of a retractable portion fer holding the latter in retracted position. 9. A ?ue comprising a base section open at its, lower end, and a plurality of nesting retractable‘ sections that telescope into the base section, the base section having an aperture in its side that is spaced a distance above its lower end whereby the portionof said base section below the plane of said aperture providesa soot-collecting basin, opening the soot-collecting basin. ‘opposition to said spring, a cap fastened to the / top of the inner retractable section provided with an outwardly extending ?ange that overhangs the other sections, a hook rising from one side of the base section and positioned for engagement with the top of said ?ange thereby to retain the ing parts of the base section thereby to retain 30 retractable sections in retracted position, the the closure in operative relation to the base sec ?ange being cut away atone side to permit the tion, a substantially U-shaped bail pivoted at its ?ange to pass said hook,‘ and diametrically op ends to diametrically opposite-parts of ‘the basev posed lugs on the cap tofacilitate turning the a closure arranged to engage the lower end of the base section, guide means thereon slidably engag section near the bottom thereof so that the cen same so as to shift said cut-away portion of the tral portion of said bail may occupy a position 35 cap out of register with said hook. ' below the bottom of the base section, a spring 12. A telescoping ?ue comprising a base sec compressed between the, central portion of said tion that is open at the bottom, and a plurality > bail and the closure, and parts on the closure ar of nesting retractable sections that are, adapted ranged to be engaged by the lower ends of. the retractable sections, when'the ?ue is in retracted condition, for depressing the closure in opposition to said spring and thus opening the soot-collect- ‘ ing basin. ' 10. A ?ue comprising a base section that is ' open at its lower end andv a plurality of nesting retractable sections that telescope into the base section, the base section having an aperture in its side that is so spaced above its lower end that the portion of said base section below the plane ' of said aperture provides a soot-collecting basin, an inverted dished closure having a peripheral ?ange arranged to engage the lower end of the base section, guide means rising from the closure and slidably ?tting within the lower end of the base section to retain the closure in operative } relation to the base section, a substantially U shaped bail pivoted at its ends to diametrically ‘,_ opposite parts of the base section near the bottom thereof so that the central portion of said bail may occupy aposition below. the bottom of the base sec , tion, means for releasably holding the bail in said position, a spring seat with spring positioning to be contracted into ‘the base section, the base section having an opening in its side spaced above its'lower end through which the ?ue isadapted to be .communicatively connected with a combus tion apparatus, the ?ue enclosing a soot-collect ing basin below the plane of said opening, a clo sure for the bottom of the basesection, a spring tending to retain the same in closed position, the closure having a part engagedby the lower ends of- the retractable sections when the ?ue is in con tracted condition'for opening said closure in op position to said spring, a cap-fastened to the top of the inner retractable, section provided with an outwardly extending ?ange that overhangs, the other sections, a hook rising from oneside of the base section and positioned, for engagement with the top of said ?ange thereby to retain the re tractable sections in retracted position, the flange being cut away at one side to permit the ?ange to pass said hook, a socket formed in said ?ange for the reception of said hook, a‘ detent on one side of the socket, and a stop on the other side thereo? , - MARC RESEK.