US2634759A - Insulated flue pipe - Google Patents

Insulated flue pipe Download PDF

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Publication number
US2634759A
US2634759A US107062A US10706249A US2634759A US 2634759 A US2634759 A US 2634759A US 107062 A US107062 A US 107062A US 10706249 A US10706249 A US 10706249A US 2634759 A US2634759 A US 2634759A
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United States
Prior art keywords
pipe
lugs
flue
struck
insulated
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US107062A
Inventor
Twickler Raymond Francis
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William Twickler & Sons Inc
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William Twickler & Sons Inc
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Publication date
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Priority to US107062A priority Critical patent/US2634759A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00Thermal insulation in general
    • F16L59/06Arrangements using an air layer or vacuum
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/4935Heat exchanger or boiler making
    • Y10T29/49361Tube inside tube
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49826Assembling or joining
    • Y10T29/49861Sizing mating parts during final positional association
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49826Assembling or joining
    • Y10T29/49879Spaced wall tube or receptacle

Description

Ap 14, 1953 R. F. TWICKLER 2,634,759
INSULATED FLUE PIPE Filed July 27, 1949 3nventor flwymana/Z't 71v icil Gttorn J Patented Apr. 14, 1953 UNITED STATES PATENT OFFICE INSULATED FLUE PIPE Application July 27, 1949, Serial No. 107,062
1 Claim. 1
The invention relates to insulated flue pipes, and has for its object to provide a device of this kind comprising inner and outer pipes in spaced relation, and formed from sheet metal, and spacing members carried by the inner and outer pipes and secured together in the space between the pipe walls.
A further object is to provide spacing means between the inner and outer pipes within the air space around the inner pipe and comprising struck-in lugs carried by the outer pipe and struck-out lugs carried by the inner pipe, the lugs of the pipes registering and engaging and secured together, preferably by welding, thereby forming a rigid insulated pipe.
A further object is to provide a flue pipe comprising inner and outer pipes having an air space around the inner pipe and spacing lugs carried by the pipes.
With the above and other objects in view the invention resides in the combination and arrangement of parts as hereinafter set forth, shown in the drawing, described and claimed, it being understood that changes in the precise embodiment of the invention may be made within the scope of what is claimed without departing from the spirit of the invention.
In the drawing:
Figure l is a perspective view of the pipe, showing a section therethrough.
Figure 2 is a vertical longitudinal sectional view through the form of flue pipe shown in Figure 1.
Figure 3 is a vertical transverse sectional view through a round form of pipe.
Figure 4 is a view similar to Figure 3 showing an 01f round form of flue pipe.
Referring to the drawing, the numeral l designates the outer pipe and 2 the inner pipe, whichpipes are in spaced relation thereby forming an inner insulating chamber 3 entirely around the inner pipe 2.
Struck-in from the walls of the outer pipe 2 are frusto conically shaped lugs 4 longitudinally spaced as well as circumferentially spaced. Struck-in lugs 4 register with struck-out lugs 5, which are also frusto conically shaped and which are struck-out from the inner pipe 2. By forming the lugs frusto conically shaped relatively wide engaging surfaces 6 are formed, and which surfaces are secured together in any suitable manner, however preferably welded at I, therefore it will be seen that a rigid insulated flue is formed, and one which can be easily and quickly, assembled. At the same time the chamber 3 Will form an insulating space or a ventilating space, if desired.
It will be seen that the inner pipe 2 can be easily and quickly assembled as the lugs 4 and 5 are preformed in exact position, and the lugs can be connected together by spot welding. Although the device is shown in the form of a straight flue, it is obvious elbows and other pipe forms may be made, and the usual J'oints may be placed on the ends of the elements formed in accordance with the invention.
From the above it will be seen that an insulat ed flue is provided which is simple in construction and one which may be easily and cheaply manufactured and sold. It will also be seen that it will only be necessary, in assembling, to place one pipe within the other with the lugs in registry and then to weld or secure the lugs together.
The invention having been set forth what is claimed as new and useful is:
An insulated flue comprising an outer pipe, an inner pipe within the outer pipe in spaced relation thereto thereby forming a chamber around the inner pipe, said inner pipe having struck-out frusto conically shaped lugs extending half way across the chamber, the outer pipe having struckin frusto conically shaped lugs in registry with and engaging the outer ends of the struck-out frusto conically shaped lugs of the inner pipe, means securing the adjacent faces of said frusto conically shaped lugs together, the engaging ends of said frusto conically shaped lugs being of the same area.
RAYMOND FRANCIS TWICKLER.
References Cited in the flle of this patent UNITED STATES PATENTS Number Name Date 531,000 Morrison Dec. 18, 1894 1,150,407 Wells Aug. 17, 1915 1,930,285 Robinson Oct. 10, 1933 1,930,782 Turner Oct. 17, 1933 FOREIGN PATENTS Number Country Date 309,646 Germany Mar. 17, 19 17
US107062A 1949-07-27 1949-07-27 Insulated flue pipe Expired - Lifetime US2634759A (en)

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2761525A (en) * 1950-07-26 1956-09-04 Walker Mfg Company Of Wisconsi Muffler
US2787289A (en) * 1954-12-01 1957-04-02 Resistoflex Corp Flame-resistant flexible hose assembly
US2878837A (en) * 1956-12-03 1959-03-24 Stewart Warner Corp Pneumatic jacket for aircraft combustion apparatus
US2954054A (en) * 1957-02-25 1960-09-27 Pack Mfg Company Reinforced multi-tube structure
US2959196A (en) * 1955-11-23 1960-11-08 Dura Vent Corp Multiple wall pipe
US2978261A (en) * 1956-03-15 1961-04-04 Epstein Saul Double wall vent pipe
US3053283A (en) * 1958-03-05 1962-09-11 Havilland Engine Co Ltd Duct assemblies
DE1296898B (en) * 1966-03-23 1969-06-04 Ric Wil U K Ltd Heat-insulated pipeline and elbow expansion compensators for it
US3808715A (en) * 1972-08-11 1974-05-07 J Haban Snow thrower with rotatable snow spout
US4566435A (en) * 1981-10-15 1986-01-28 Kabushiki Kaisha Komatsu Seisakusho Solar heat collecting apparatus
US4585059A (en) * 1980-01-15 1986-04-29 H & H Tube & Mfg. Co. Heat transfer tube assembly
US5303744A (en) * 1991-09-27 1994-04-19 Nestec S.A. Piping protection assembly
FR2697314A1 (en) * 1992-10-26 1994-04-29 Europ Gas Turbines Sa Metallic sheath subjected to high temperature gradients.
US6070616A (en) * 1996-12-24 2000-06-06 Behr Gmbh & Co. Process for mounting lugs and/or projections on a thin metal sheet and a thin metal sheet having lugs and/or projections as well as a rectangular tube made of thin metal sheets
DE10201511A1 (en) * 2002-01-17 2003-07-31 Behr Gmbh & Co Welded multi-chamber tube
US20110047774A1 (en) * 2009-05-05 2011-03-03 Brugg Rohr Ag Holding Method and device for manufacturing a heat-insulated pipe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE309646C (en) *
US531000A (en) * 1894-12-18 William morrison
US1150407A (en) * 1913-08-12 1915-08-17 Babcock & Wilcox Co Steam-superheater.
US1930285A (en) * 1929-05-27 1933-10-10 Roy H Robinson Built up metal tube, frame and skeletonized metal member of high strength weight, and method of forming same
US1930782A (en) * 1931-04-16 1933-10-17 Charles S Turner Soot blower construction for superheater tubes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE309646C (en) *
US531000A (en) * 1894-12-18 William morrison
US1150407A (en) * 1913-08-12 1915-08-17 Babcock & Wilcox Co Steam-superheater.
US1930285A (en) * 1929-05-27 1933-10-10 Roy H Robinson Built up metal tube, frame and skeletonized metal member of high strength weight, and method of forming same
US1930782A (en) * 1931-04-16 1933-10-17 Charles S Turner Soot blower construction for superheater tubes

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2761525A (en) * 1950-07-26 1956-09-04 Walker Mfg Company Of Wisconsi Muffler
US2787289A (en) * 1954-12-01 1957-04-02 Resistoflex Corp Flame-resistant flexible hose assembly
US2959196A (en) * 1955-11-23 1960-11-08 Dura Vent Corp Multiple wall pipe
US2978261A (en) * 1956-03-15 1961-04-04 Epstein Saul Double wall vent pipe
US2878837A (en) * 1956-12-03 1959-03-24 Stewart Warner Corp Pneumatic jacket for aircraft combustion apparatus
US2954054A (en) * 1957-02-25 1960-09-27 Pack Mfg Company Reinforced multi-tube structure
US3053283A (en) * 1958-03-05 1962-09-11 Havilland Engine Co Ltd Duct assemblies
DE1296898B (en) * 1966-03-23 1969-06-04 Ric Wil U K Ltd Heat-insulated pipeline and elbow expansion compensators for it
US3808715A (en) * 1972-08-11 1974-05-07 J Haban Snow thrower with rotatable snow spout
US4585059A (en) * 1980-01-15 1986-04-29 H & H Tube & Mfg. Co. Heat transfer tube assembly
US4566435A (en) * 1981-10-15 1986-01-28 Kabushiki Kaisha Komatsu Seisakusho Solar heat collecting apparatus
US5303744A (en) * 1991-09-27 1994-04-19 Nestec S.A. Piping protection assembly
FR2697314A1 (en) * 1992-10-26 1994-04-29 Europ Gas Turbines Sa Metallic sheath subjected to high temperature gradients.
EP0595693A1 (en) * 1992-10-26 1994-05-04 European Gas Turbines Sa Metal jacket subjected to high temperature gradients
US5469894A (en) * 1992-10-26 1995-11-28 European Gas Turbines Sa Metal duct subjected to steep temperature gradients
US6070616A (en) * 1996-12-24 2000-06-06 Behr Gmbh & Co. Process for mounting lugs and/or projections on a thin metal sheet and a thin metal sheet having lugs and/or projections as well as a rectangular tube made of thin metal sheets
DE10201511A1 (en) * 2002-01-17 2003-07-31 Behr Gmbh & Co Welded multi-chamber tube
US20110047774A1 (en) * 2009-05-05 2011-03-03 Brugg Rohr Ag Holding Method and device for manufacturing a heat-insulated pipe
US8950071B2 (en) * 2009-05-05 2015-02-10 Brugg Rohr Ag Holding Method and device for manufacturing a heat-insulated pipe

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