Untitled record

No, 770,599.

NO MODEL,

PATENTED SEPT. 20, 1904 B. C. MONTEAGLE.

HEAT CONDUCTING TOBE.

APPLICATION PILED APB, 6, 1903,

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Patented. September 20, 1904.

No. 770,599.

United States Patent Office.

ROBERT CHARLES MONTEAGLE; OFW 'ξ»?. It i.. A^KIXOR OF ON* El ATto TO E. ΜΑΝλ Λ A NNE, Ol· NEY YOKE, N. 1.

HEAT-CONDUCTING TUBE.

SPECIFICATION forming part of Letters Patent No. 770,599, dated September 20,

Application filed April 6,1903. Serial No. 1511236. ‘No model.) to each other, than is shown in Fig. 2. A 5° short section C at the ends ot the tubes is iefi. cylindrical in shape to facilitate adjust1 ment of the tubes to the heads ot boilers 01 condensers. The peculiar shape of those

-tubes thus formed produces a whirling action 55 of the liquid in passing through the same, which insures intimate contact ot the liquid with the.surfaces of such character that the conductionfof heat through the walls of. the , tiibe is much increased. A tube of this character also possesses marked advantages in . other ways.· The body of the tube possesses a flexibility much greater than any straight tube would possess, and therefore can give both by bendingand extension or compression, °5 so. that the strains which variation m temperature tend to produce are compensated tor.in the body of the tube. This relieves the point of attachment of the tube in the head nom the strains which with ordinary tubes tend to 7 loosen the joint and cause leaks This term of tube is thus specially well adapted for use in condensers, as it has a high conducting power and may be kept tight in the heads.

The material of the tube may be anything 75 which it is possible to work into the shape desired. Copper or a ductile material resembling copper is'a desirable and preferable material to use in a majority of cases. ·

It will be. noted that in the improved con- ⁰⁰struction of the tube comprised ip my mvention- the central bore or main passage is ot •oved tube consists relatively reduced diameter or area am a series of distinct chambers are toi ined to ex tend outwardly and project from said central 5 bore or passage and helically surround the same, said outer chambers being constituted by a series of helical convolutions surrounding the central passage, which isot retatiyeiy narrow or reduced diameter. .1 he helical 9 ί convolutions form the chambers opening into ^:5

To all iri-om it.may concern:

. Beitkno>vnthafI,-Eo-BERTCnAHLiaM«»XTeagle, a .citizen of the United States, and a left cy resident of Morris Heights,in the city of New —t <

York, county and State of New York, have invented certain new and usefuL Irniiroyementsin Heat-Conducting Tubes, of which the following is a specification. .

My invention relates to igi improvement in το tubes intended for use in such devices as eyap-:.

' orators, condensers,or similar purposes whei-e. it is desired “to conduct heat between fluids ··' which are respectively within and without . the tube. . . , „

The object of ray invention is to produce a tube for such purposes which shall nave· a greater conductive capacity than an ordinary plain tube and which is also less liable to becomc loosened by'the variations in temperature to which it may be subjected. \ .

A further object of my invention is to produce a tube of the character described which may be cheaply and readily manufactured by processes which are commercially practicable.

Other objects of my invention will appear from an inspection of the description and claims hereunto appended.

In the drawings, Figure 1 represents, an exterior view of a tube, a portion of one end of the same being in section; and. Fig. 2 is a cross-section of the tube. ’

Corresponding parts in all the figures aie denoted by the same reference characters.

The body A of my improved tr.be

Λ of a series of longitudinal bulged or convex convolutionsB, which are substantially radial in cross-section and. which are coiled or pass heliehllv about the axis of . the tube anil arc separated from eadi,. other, by helicafiy-ex40 tending grooves or .depressions concave in • cross-section and. of a width approximately > equal to the width of the bulged or convex . of deep deconvolutions. This effect is produced jy st tl ,j_nte|._lllP71i_!ltel.y of the .chain tiers and rolling or otherwise forming the tube ·.< <. ·. P -· · . _v t<> the. central passage, to produce the radial convolutions and th . ;;-i L ~_β η _t; |_IP]j₍-,i depressions pref- 95 twisting .the tube thus formed. I he cross-., wh c / , X_ilni_tely in their • section shown in Fig. 2 gives the width To the chambers. In the of the tube before twisting. Y hen the : ./.,,,1 construction the mouths or. open, is twisted,.the convolutions approach nearer pretci icd const, action inc

599 series of helical convolutionsSurrounding the central. passage, the chambers opening into the .central passage and a series of deep depressions intermediate of the' chambers and projectihg inwardly to the'central passage, 4° i the construction and arrangement being such I that the greater interior area of the tube is in i the outer chambers and not in the central bore * ' I or passage. · .

2.^ίΛ A heat-conducting tube of the class.de- 45 scribed having a central bore or main passage of relatively reduced diameter or area and a series of distinct chambers extending outwardly and projecting from said central bore or passage and helically surrounding the same, 5° said outer, chambers being constituted by a . series of helical convolutions surrounding the central passage, the chamber's opening into the central passage and a series of deep* depressions intermediate of the chambers and 55 projecting inwardly to the central· passage, the. moyths or openings of said chambers into the central passage being of reduced width with .relation to the body of the chamber and · the construction and arrangement being such 6° that the greater interior area-of the tube is in : theouter chambers and not in this central bore or passage. .. . Ini testimony whereof I have signed my name · in the presence of the subscribing witnesses. 65

ROBERT CHARLES MONTEAGLE.

770, ings of the distinct chambers into the central .paSsage are of reduced width with relation to the body of the chamber.

The improved construction and-arrange5 ment, as above noted, is such that the greater interior area of the tube is in the outer chambers and not in the central bore or passage, whereby the passage of steam or other media through the tube is sufficiently retarded to io enhance efficiency in- operation, and the improved construction also provides in a given compass a maximum area of effective and active operative surface.

I do not desire to be understood as limiting 15 myself to the details of construction and arrangement as herein described and illustrated, as it is manifest that variations and modifica tions may be made?in the features of construction and arrangement in the adaptation 2o of the device to various conditions of use withopt departing from the spirit and scope of my invention and improvements. I therefore reserve the right to all such variation and modification as properly fall jyithin the • 25 scope of my invention and the. terms of the following claims. -