US1918851A

US1918851A - Wick burner

Info

Publication number: US1918851A
Application number: US541348A
Authority: US
Inventors: Walter C Lindemann; Gustav C Lorenz
Original assignee: Lindemann A J & Hoverson Co
Current assignee: A J Lindemann & Hoverson Co; Lindemann A J & Hoverson Co
Priority date: 1931-06-01
Filing date: 1931-06-01
Publication date: 1933-07-18
Anticipated expiration: 1950-07-18

Description

y 18, 1933- w. c. LINYDEMANN ET AL 1,918,851

WICK BURNER Filed June 1, 1931 I A. /I. 0 H

INVENTOR N ub. BYZZIAATTQRNEY Patented July 18, 1933 I UNITED- STATES PATENT jomce WALTER o. LINDEMANN AND GUSTAV onions-1N2, or iv nwnuxnn, wiscoivsnv, AS- 7 1 srenous TO A. :r. nnvnnmnnna novnnson coivrrnNY; or MILWAUKEE, WISCON- SIN, A CORPORATION OF WISCONSIN wiox Brianna Application filed June .1, 1931. Serial No. 541,348.

T he improvements relate to burners in which liquid hydrocarbon fuel is used and is vaporized and burned at the top of a capillarywick, and more particularly to means for holding'the wick device in proper position between the wick tubes and permitting it'to be inserted and removed therefrom, to main tain its position and to work therein without difiiculty, and also for protecting it against the danger of combustion below its top and from the clogging and other undesirable effects of falling carbon or otherforeign matter to which it and the fuel in the lower part of the tubes may be exposed.

. and gases to contaminate the atmosphere and l-leretofore it has been thepractice to some extend to have the outer wick tubeterminate a considerable distance below the top of the inner wick tube, and to provide the outer wick tube with a removable head extending up to the top of the outer wick tube,so that this head can be removed to give access to the wick, when it'is necessary to remove and replace it. This head is sometimes provided with an inwardly extending portion and a collar depending therefrom and extending downwardly alongside the wick to space the wick from the outer wall of the head and secure it in position. Such heads, however, sometimes give rise to undesirable results, since they are required'to be very accurately made and fitted, and very carefully posi tioned, and unless so made and positioned will cause bad combustion liberating smoke foul cooking utensils, and may even permit the highly inflammable vapor generated at the top of the wick to gravitate down between the tubes and set up dangerous combustion there; 1

The primary objects 'of the present improvements are to provide a wick spacing and holding device between the wick and the outer tube of simple and easily manipulated form and efficient and dependable'character, which will permit the outer wicktube to extend substantially to. the top of the inner wick tube, will seal off the space between the outer tube and the wick and provide an accurate andstable base for the combustion tubes usually employed in connection there,-

and other purposes to pro with, for cooking duce a blue flame.

Other usefulness and advantages will be i understood by those familiar with the manufacture and use of burners of this character. The improvements are illustrated in the accompanying drawing, in which--' Figurel' is a side view, partly in perspec tive, showing the tops of wick and wick tubes, with the wick holding device in position, embodying the improvements, the up per partoof the outer tube being broke'n'away to expose the wick holder andspacer, which is shown iii-vertical section;

Figure 2 is aview similar to Fig. 1 of the said wick holder andspacer removed from the tubes; 7 i v Figure 3 is a half, side elevation and half vertical section of the parts shown in Fig. 1, with the combustion tubes and their outer shield inounte'd I thereon, the latter being broken off just above their bottoms.

The inner wick tube 1 has an inwardly projecting annular flange 2 at its top support I ing a cross member 3, whichjmay be employed as a guide. for an ordinary combustion chamber raising and lowering device, and has an upstanding annular rim 4: formed by folding over the upper edge of the tube. The flange 2 is the usual support for the bottom edge of the inner combustion tube S and'the rim 4 the-means for holding it in position thereon. The collar of the outerwick tube 6 is provided with a similar flange 7 having a like rim 8 formed inthesame-manner as the rim 4,'for supporting the outer combustion tube 9. The combustion tubes 5 and 9 may be secured together in the usual manner, and

surrounded by a wind shield 10, preferably secured to the combustion chamber by the same means. The parts so far describedare all of usual and ordinary form,and have been well known and extensively used for many years. I J

The flange 7 of the outer wick tube 6 is not formed on that tube, butgis formedon the top of a collar which has its lower portion 11 provided with curved grooves 12, adapted to engage short beads 13'on the inner'side of the wick tube 6, the grooves 12 having open 2; should be of sufficient length to take care of a is in overlapping relation to said edge, whereby a seal between'these parts is provided. It is not necessary, however, that the beads 13 shall be lodged in the horizontal ends12t when the collar is home and the flange 7 in contact with the upper edge of the tube 6, as the friction between the beads and the grooves will be suliicient to hold them at any ointjin the 'roovea The roove however slight variations in the location of the beads and grooves and in the length of the outer tube, so that rotation of the collar will always bring the flange 7 down until it presses against the upper edge of the tube, and, with the assistance or" the peripheral bead 7 makes a good closure. 7 V

The collar has an inwardly and upwardly extending portion 14 and a vertical portion 15, so that it extends, inwardly from theinner surface of the outer wick tube and then upwardly to form a space between it and the in ner wick tube for the wick 16, the wick thus being held in position and permitted to move up and down between annular guides of limited depth on one side, sothat it is rather closely confined, near its upper edge, without much friction. The space, however, is wide enough to permit the perforated wick liner 17 to be moved up therethrough to the top of the wick tube by the wick raising and lowering device 18. I

The wick, its perforated metal sheath 17 and the wick raising and lowering device 18 are of usual form, andtherefore require no furtherdescription.

It will be seen from the foregoing that the cutting off of the outer wick tube and the provision of a cap extending above the same, or any other extension of'the outer tube are avoided by the present construction, and that the upper edge of the. collar carrying the seat for the outer combustion cylinder is firmly and securely positioned on the top of the'outer tube, and-a seal formed be tween the flange 7 and and the upper edge of said outer tube. Thebead 7 not only assists in forming this seal and in securing the proper relative positions of the parts, but

( provides a slightly extending annulus which may begrasped by the fingers of the user for-the purpose of rotating the collar-and removing and replacing it. This bead may be milled or otherwise provided with, an

' outer edge which will give a good purchase .for the fingers. It will also be seen that the space between the wick and the outer wlck bustion cylinder or theoutside of the outer wick tuber. The fact that the base .flange 'r' rests squarely on the top of the outer wick tube, and is in eifect integral therewith, ensures a firm and accurately positioned base for-the combustion chamber on the outside,

and avoids any undesirable results due to the expansion or contraction of the metal or slight inaccuracies which mayoccur. in the manufacture of the parts, which isnotthe case where a head or other extension'of the outer wick tube is used and is mounted on the wick tube by means of a connection having a limited area. located at a point distant from the point at which the combustion tube is supported. Y

The desirability of insulating the wick tube from the combustion in the combustion chamber and the heat of the combustion chamber cylinders and their seats communicated to themtroni the combustion chamber, has been appreciated for many years, and various devices havev been used to effect this purpose. It is believed, however, that the present improvements have advantages over all others in this-respect; andif desired, the portionofthe wicktube at 19, opposite the vertical portion 150T the collar, may be-provided with perforations to permit the circulation of'air through the chamber 20 between these parts for the cooling of the parts.

The perforations 21 in the outer fold of the outside combustion tube holding rim 8 the top of may be employed hether or not the wick tube is perforated, to provide an outlet of air from the chamber 20, and sup port combustion at'the bottom edge of the outer combustion tube 9. These perforations should be of about the same calibre asthose of the combustion cylinderswhich follow the well known formula for blue flame. combustion-and not more numerous,

so that avery limited supply of air isjgiven. thereby, andat the same time an upward movement imparted to the air in the chamber 20 to' ventilate itand promote cooling.

By this provision also a small volume of'air may be permitted to enter the chamber through the joints, ,and any slight amount of oil creeping up through the lower joint; will be takenfcare of by evaporation and venting.

lVhat weiclaim is:

l. The combination-with v outer and inner. concentric wick-tubes having a space therebetween for a wlckj and acombustlon chamto contact with a wick and upwardlytothe' top of said outer'tube and a portion extending outwardly therefrom.:-

2. The combination withouter and inner concentric wick tubes having a space therebetween for a wick. and a, combustion chamber mounted thereon, of a collar supported below the top of and inside the outerwick tube having a portion extending inwardly and upwardly to the top ofsaid outer tube and a portion supported thereby extending outwardly therefrom and over the upper edge of the said outer tube. 7

3. The combination with outer and inner concentric wick tubes having a space therebetween for a wick and a combustion chamber mounted thereon, of a collar supported below the top of and inside the outer wick tube having aportion extending inwardly and upwardly to the top of said outer tube and a portion extending outwardly therefrom and over the upper edge of the said outer tube, said last named portion having an edge portion supported thereby projecting beyond said wick tube and below its upper edge.

4-. The combination with outer and inner concentric wick tubes having a space therebetween for a wick and a combustion chamber mounted thereon, of a collar supported below the top of and inside the outer wick tube having a portion extending inwardly and upwardly to the top of said outer tube and a portion extendingoutwardly therefrom and over the upper edge of the said outer tube and means for securing the said collar in position and maintaining said last named portion pressing against the upper edge of said outer wick tube.

5. The combination with outer and inner concentric wick tubes having their upper edges substantially in the same plane and having a space therebetween for a wick and a combustion chamber mounted thereon, of

a collar supported below the top of and in-.

side the outer wick tube havinga portion extending inwardly and upwardly to the top of said outer tube and a portion extending outwardly therefrom.

6. A burner comprising spaced concentric outer and inner wick-tubes providing a space between them for a wick and having their upper edges substantially in plane, of a collar secured and supported inside the outer wick tube extending to the top thereof and having at its top a seat for a combustion cylinder closing the space between it and the outer wick tube.

7. The combinaton with outer and inner concentric wick tubes having a space therebetween for a wick and a combustion chamber mounted and supported thereon, of a collar supported below the top of and inside the outer wi'ck tubehaving a portion extending inwardly and upwardly to the top of said outer tube and a portion extending rout.-

wardly therefrom there being a space betweenthe inwardly extended portion of the collar and the upper portion of the outer tube, thelower portion of the collar being in contact with the inner surface of the outer wick tube, whereby an air chamber closed at top, bottom and inner side is provided beneath-the, combustion chamber.

8. Theacombination with outer and inner concentric wick tubes having a space therebetween for a wick and a combustion chamber mounted and supported thereon, of a collar supported below the top of and inside the outer wick tube having a portion extending inwardly and upwardly to the top of. said outer tube and a portion extending outwardly therefrom there being a space between the inwardly extended portion of the collar and the upper portion of the outer tube, the lower portion of the collar being in contact with the inner surface of the outer wick tube I throughout its circumference and an extended vertical area, whereby an air chamber closed at to'p,-bottom and inner side'is pros vided beneath the combustion chamber.

9. The combination with outer and inner concentric wicktubes having a space therebetween for a wick and a combustion chamber mounted and supported thereon, of a collar supported below the top of and inside'the outer wick tube having a portion extending inwardly and upwardly to the top of saidv outer tube and a portion extending outwardly therefrom, an upstanding flange formed in the collar at the junction therewith of the. I

walls and the outer wall being provided 7 with perforations.

10. The combination with outer and inner concentric wick tubes having a space therebetween for a wick and a combustion chamber mounted and supported thereon, of a col- ,lar supported below the top of and inside the outer wick tube having a portion extending inwardly and upwardly to the top of said I outer tube and a portion extending outward- I ly therefrom, an upstanding flange formed in the collar at the junction therewith of the outwardly extending portion to position the lower edge of a combustion chamber outer cylinder on said outwardly extending portion, said flange having two spaced upright walls and the outer wall being provided with perforations, and there being a space between the inwardly and upwardly extending portion of the collar and the said outer wick tube with which said perforations communicate.

11. The combination with outer and inner concentric wick tubes having a space therebetween for awick and a combustion chamber' mounted thereon, of a collar having a substantial portion mounted below the top of and inside the outer wick tube, means. for

ber mounted thereon, of a collar, a substantial portion "of said collar mounted below the top of and inside the outer wick tube,

said. portion extending inwardly and up wardly to the top of said outer tube, a portionextending outwardly therefrom, an upstanding flange formed in the collar at the junction therewith of the outwardly extending portion to position the lower edge of a combustion chamber outer cylinder on said last nanied'portion, said flange having two spaced upright walls and the outer wall being provided'with perforations, means for supporting said collar positioned substantial- 1y below the top of and on the inside of the outer wick tu WALTER 'o. LINDEMANN.

GUSTAV o. LORENZ;