US2263659A

US2263659A - Lantern

Info

Publication number: US2263659A
Application number: US313561A
Authority: US
Inventors: Boyd W Tullis
Original assignee: Coleman Lamp and Stove Co Ltd
Current assignee: Coleman Lamp and Stove Co Ltd
Priority date: 1940-01-12
Filing date: 1940-01-12
Publication date: 1941-11-25
Anticipated expiration: 1958-11-25

Description

Nav. 25, 1941.

B. W. TULLls 2,263,659

LANTERN Filed Jan. l2, 1940 '2 Sheets-Sheet l WM. "k W Ill Illllll INVENTOR 505/5/ W 72H/fs.

ATTORNEY Patented Nov. 25, 1.9341l LANTERN Boyd W. Tullis, Wichita, Kans., assignor to The Coleman Lamp and Stove Company, Wichita, Kans., a corporation of Kansas Application January 12, 1940, Serial No. 313,561

Claims.

This invention relates to lanterns, particularly those designed for burning liquid hydrocarbons such as kerosene and which require a generator for supplying fuel vapor to a Bunsen.

The principal object of the invention is to provide a lantern construction of this character which is simple and inexpensive to manufacture, and wherein the parts are quickly and accurately assembled.

Other objects of the invention are to provide a lantern of this character with an improved suspension and distribution of the weight of the fount from the bail; to provide a lantern construction wherein the interior parts are readily accessible and the globe is adapted for ready removal; to provide a lantern which is not ailected by gusts of wind or is likely to clog by insects; to provide an ample airsupply regardless of wind direction relatively to the air inlet of the Bunsell and lto provide the lantern with a composite bar through which air is supplied to the Bunsen and which forms an attachment for the bail as Well as support for the Bunsen and burner tubes.

In accomplishing these and other objects of the invention, as hereinafter pointed out, I have provided improved details of structure, the preierred form of which is illustrated in the accompanying drawings, wherein:

Fig. 1 is a side elevational view of a lantern constructed in accordance with the present invention.

Fig. 2 is a vertical section through the lantern particularly showing adaptability of the parts to ready and accurate assembly.

Fig. 3 is a detail perspective view of the fount, spacing collar, and the mounting plate shown in disassembled spaced relation.

Fig. 4 is a perspective view of the lantern globe, top assembly and ventilation top shown in disassembled spaced relation.

Fig. 5 is a detail perspective view of the parts of the carrying bar shown in disassembled spaced relation.

Referring more in detail to the drawings:

l designates a lantern constructed in accordance with the present invention `and which includes a fount 2 having a rim-like base 3, and a cylindrical Wall 4 terminating in a dome-shaped top 5. The center of the top has a preferably tapered opening 6 threaded to receive the threads of a tapered nipple 1 of a fuel control valve 8. The valve 8 has a transversely arranged body 9 provided With an outlet connection I0 connected by a flexible tube Il with a generator base member l2, The valve also includes a tube I3 depending within the fount and having an inlet located adjacent the bottom thereof., Elow lrem the yfount through the valve ismanually adjusted by a, hand=w-hee1 I4 carried on a ,stem l5 0i the valve. The tapered threaded connection 0f the valve body provides a leak-tight joint without the use of gaskets, but the diinculty is that the extent of takeup of the threads is variable and therefore must be taken care of in makeup of the lantern parts, later described.

Also formed in the dome-shaped top of the fomit, and odset laterally of the fuel cgntrol valve,` is a threaded opening 'I6 threadedly mounting a generator preheat-ing device I8 which is preferably oi the type illustrated in my application for United States Letters Patent on Atomi-2er. led January l2, 1940, Serial No. 313,562. l

Briey, the preheater included a valve i8 controlled by a handewheel -I9 to regulate discharge of an atomized mixture into the burner tube 2l) which is directed toward a Ygenerator tube 2| that is carried on the member I2. The oullt also carries an air pump i2 by lwhich air is discharged through a tube 23 into the vapor space 24 at the top of the fount V.for displacing fuel through the tube -|3 and to supply fuel and air to the preheater as later described,

The fount also includes a lill opening 25 through which fuel is inserted into the .fount and which is normally closed by a cap 26. The top of the leunt is shaped te ferm an annular shoulder 121 to center a spacing collar 26 thereon. The collar -28 has air inlet openings 29, Openings 30, `3i and 32 for respectively passing the actuating stems oi the valves 8 and I8, and av generating vtip cleaning lever 33 that is carried by the part l2. The lever 33 is rotatably mounted in a late Aeral extension-34 of the part I2 and passes through a packing nut 35 to prevent leakage of fuel and air therearound.

Seated upon :the upper edge of the spacing collar 28 is a 4base plate 36 having a central, circular, depressed portion 4lll engaged within the collar to maintain the base plate in axial alignment with the iount. The plate is attached to `the fountby fastening devices such as screws 38 having their Shanks 3S extending through openings 4U in the plate and into threaded sockf ets 4| carried by the top of the fount (Figs. 2 .and 3). The base plate 136 has diametrically opposed arm portions 42 and 43 provided with

rod ichoring collars

44 and 55. The collars 44 and best shown in Fig. 2 and have vertical bores are secured in openings 46 of the plate ask 41 and 48 extending therethrough. The base plate also has an opening 49 to pass the tube of the preheater and an opening 58 to pass the threaded neck 5| which projects from the shouldered upper end 52 of the generator supporting member |2.

The member I2 is rigidly secured to the plate by a nut 53 threaded onto the neck 5| to draw the shoulder 52 against the bottom of the plate, thereby forming a xed support of the generator tube 2| independently of the Valve 8. Any variation in takeup between the valve and the part I2 is compensated for by the flexible connection In order to stiften the plate and provide a retaining seat 54 for the lantern globe 55, the base plate is provided with an upwardly directed flange 56, which also preferably extends about the

collars

44 and 45 as best shown in Fig, 3.

'Ihe lower end of the generator tube 2| has a flaring flange 51 engaging the bevelled end 58 of the threaded neck 5| `and which is sealingly retained thereon by a nut union 59. The upper end of the tube has a slightly enlarged portion 68 connected at its upper and lower ends with the ends oi a generating loop 6| extending about the burner tip or mantle support, later described. The portion 68 terminates in a shoulder 62 encircling a neck 63 carrying a removable orice tip 64 discharging into a mixing chamber or Bunsen tube 65.

The mixing chamber 65 is carried by a crossbar 66 extending diametrically through rectangular openings 61 and 68 in a ring 69. The ring 69 has-an outwardly flaring skirt portion 10 arranged to engage the upper edge of the globe and retain the `globe on its seat. The ring 69 has an annularly shouldered belt 1| substantially registering with the upper face of the cross-bar to seat the ventilator top 12 later described. The bar 66 is formed of sheet metal and includes upper and lowerparts 13 and 14. The lower part 14 includes an elongated, rectangular bottom 15 having upwardly-turned sides 16-11 and ends 18-19, the ends thereof being cut to form slots 88 at the corners. The ends 18 and 19 are provided with perforations 8| and 82 for the admission of combustion supporting air to the Bunsen.

The bottom 15 has a collar 83 to pass the neck 63 and Seaton the shoulder 62. The central -portion of the bottom also has an opening 84 which, when the parts are assembled, is located inthe vertical axis of the lantern. The upper member 13 includes a top 85 having depending sidewalls 86 and 81 arranged to telescope between the sides 16 and 11 of the bottom member with the ends thereof passing through the `slots 88. .The ends of the upper member terminateV in downwardly and outwardly inclined ears 88 and 89 forming canopies for the protection of the air inlets and attachments for the lantern bail 98.

The `bail 98 has laterally bent ends 9| and 92 that extend through

openings

93 and 94 in the ears 88 and 89 and are retained therein by

cotter pins

95 and 96 which extend through suitable openings 91 inthe endsof the bail. The top 85 has openings 98 and 99 registering respectively with the

openings

83 and 84. Fixed over the opening 98 is the Bunsen tube or mixing chamber 65. Connected with the upper end of the tube is a return bend |88 connected with the swedged upper end of a tube |8|. The tube |8| has a threaded portion extended through the openings. 98 and. 84 and isY rigidly anchored therein by nuts |02 and |83 respectively engaging the top and bottom portions of the bar. The tube |8| depends through the generating loop 6| and carries a burner head |84 for mounting a mantle as in conventional practice.

The top assembly thus described is removably connected with the base plate by rods |86 and |81. The rods have shouldered upper ends |88 and |89 forming pilots ||8 and projecting into the interior of the assembled bar, through openings ||2 and ||3 so that the shoulders are drawn rigidly against the bottom of the bar by cap-screws ||4 extending through openings ||5 in the top and into threaded sockets ||6 in the ends of the pilots. The lower ends of the rods |86 and |81 have tapered shoulders ||1 and ||8 engaging tapered seats ||9 in the

anchoring collars

44 and 45, which cooperate with the shoulders at the upper ends of the rods to accurately space the bar from the base plate, thereby maintaining the orice tip 64 of the generator tube in definite location relatively to entrance of the mixing chamber or Bunsen 65. The lower ends of the rods are also provided with reduced threaded stems |28 and |2| that extend loosely through the bores in the collars and mount nuts |22 and |23 provided with shrouds |24 and |25 rotatable within the lower ends of the bores of the collars and having shoulders |26 engaging counterbores |21 of the anchoring collars. With this arrangement the rods are rigidly and quickly removed for cleaning the globe and giving access to the burner tube generator and associated parts,

The ventilator top includes a cap portion |28 of suitable inner diameter to sleeve snugly over the shouldered portion of the ring 69 and which terminates in an outwardly and downwardly flaring eave portion |29. The top of the cap terminates in a reduced cylindrical crown portion |38 having Ventilating openings 3| cooperating with vent openings |32 in the base plate 36 for the circulation of air and the removal of excess heat generated at the mantle. The top of the cylindrical crown is closed by a dome-shaped portion |33, having a downwardly curved annular eave |34 extending in protecting position over the vent openings |3|.

The lantern constructed as described is assemled as follows:

The tapered threaded nipple 1 of the valve 8 is drawn up tight in the tapered threaded opening 6 of the fount 2, no attention being paid to the variable makeup between the valve and the fount, the important operation being that the valve is drawn up tight so as to avoid any leakage about the connection. The generator base member l2, including the tip cleaning mechanism, is connected with the valve by the flexible tube The preheater |1 is then screwed into position on the fount and the spacing collar 28 is applied so that the lower end engages about the shoulder 21. The base plate 36 is then applied on the upper edge of the collar 28 and centered thereon with the depressed portion 31 fitting within the collar as shown in Fig. 3. The shoulder 52 of the generator base member I2 is drawn tightly against the base plate by application of the nut 53 so that the bevelled end 58 is xedlylspaced with respect to the base plate 36. The generator tube 2| is thenapplied by screwing the union 59 on the threaded neck of the generator base member I2. The orifice tip 64 is then a definite distance above the base plate. The assembled cross-bar EB, carrying the Bunsen and burner tubes 65 and I|I|, is inserted through the openings Bland 68 in the ring 69. This ,is readily effected by rst placing the end .of the bar having the ear 88 through the opening 6,1 until the other ear 89 passes into the ring and registers with the opening 68. The bar `65 may then be slid retractively through the openings so that it centers within the ring 59. The pilot ends II and ||I of the rods Ille and IIJ'I are then inserted through the openings |I2 and I|3 of the cross-bar and the shoulders |98 and |09 of the rods are drawn tightly thereagainst upon application of the capscrews II 4. The ventilator top is then applied over the ring 69 and anchored to the top assembly upon application of the nut |39, the heads of the cap-screws I4 passing through suitable openings Mil in the ventilator cap as shown in Fig. 2. After application of the mantle |05, followed by the globe 55, the top assembly is applied over the globe so that the reduced threaded stems and |2| of the rods pass through the bores 4'I and 48 of the anchoring

collars

44 and 45 with the tapered shoulders ||1 and |I8 thereof engaging the seats |I9 of the collars, the-reby accurately spacing the inlet of the Bunsen tube with respect to the orice tip 64 of the generator. The shroud nuts |24 and |25 are then applied to the` threaded stems |20 and |2| of the rods so that the shrouds thereof enter the

bores

41 and 48 as the nuts are tightened to securely anchor the rods including the entire top assembly on the base plate.

It is thus obvious that all the parts are spaced relatively to the base plate so that variable makeup of the threads for the valve 8 does not affect predetermined spacing of the generator tip 64 with respect to the inlet of the Bunsen tube. It is also obvious that all the parts are lined up relatively to the plate and that the weight of the lantern is carried by the plate when it is carried by the bail.

Most of the parts of the lantern are constructed so that they may be formed with dies thereby providing an inexpensive construction and yet provide a very effective and rigid structure when the parts are assembled.

Aft-er lling the fount with fuel, for example kerosene, the pump 22 is actuated to build up pressure on the liquid in the fount. Upon opening the valve I8 of the preheater I'I, an atomized mixture of air and liquid fuel is discharged through the tube 2D, which, when lighted, burns with an intensely hot flame directed against the generator tube 2|. After the generator tube has been suiiiciently heated to cause vaporization of the fuel passed therethrough the hand-wheel I4 is actuated to open the Valve 8, whereupon fuel is displaced from the fount 2 through the tube I3, into the generator tube 2|, where the fuel is vaporized and the vapor discharged through the orice tip 64, into the Bunsen tube, so that the vapor discharged into the mantle |55 is ignited by the flame of the preheater. When the fuel is vaporized to give the required brightness of the mantle HB5, the preheater valve I 8 is closed. The lantern continues to operate, primary air being drawn through the perforations 8| and 82 in the ends of the cross-bar 66, for discharge with the fuel from the jet into the Bunsen tube. During of the lantern is ventilated through the openings in the base plate |32, and the slot-likey openings ISI in the ventilator top. The ears 88 and 89 at the `ends of the cross-bar BIS, which form attachment for the bail, provide -shields so that gusts of wind do not interfere with operation of the lantern. The perforations 8| and 82 not only form screens for the exclusion of bugs, but they break up the air currents passing to the Bunsen. By providing air inlet openings at both ends of the bar, at least one of the ends is always effective in supplying adequate air `regardless of the direction which the wind blows.

From the foregoing itis obvious that I have provided a relatively inexpensive and rigid lantern construction which is readily assembled with accuracy so` that the fuel mixture effected in the Bunsen is constantly uniform. The construction of the rods and their attachment to the base plate also provide quick and easy removal of the top assembly for giving access to the globe and interior parts of the lantern.

What I claim and desire to secure by Letters Patent is:

1. In a lantern, a top assembly including, a ring member having openings in opposite diametrical sides thereof, a hollow cross-bar extending through said openings and provided with air inlets at the ends thereof, interconnected Bunsen and burner tubes carried by the cross-bar, said Bunsen tube having connection with said air inlets by way of the hollow cross bar for supplying combustion supporting air to the burner tube, a ventilator top on said ring member, means anchoring the ventilator top in xed position relatively to the cross-bar, and lantern carrying means xed to said cross bar independently of the ring member 4and said ventilator top.

2. In a lantern, a top assembly including, a ring member having openings in opposite diametrical sides thereof, a hollow cross-bar extending through said openings and provided with air inlets at the ends thereof, interconnected Bunsen and burner tubes carried by the cross-bar, said Bunsen tube having connection with said air inlets by way of the hollow cross bar for supplying combustion supporting air to the burner tube, a ventilator top on said ring member, means anchoring the ventilator top in fixed position relatively to the cross-bar, canopy-like ears extending in protective relation over the air inlets, and a bail connected with said ears.

3. In a lantern, a top assembly including, a cross member including upper and lower channel-like parts having intertting sides to form an air duct therethrough, perforated ends on one of opera-tion, the interior Vsaid channel-like parts for closing said duct at the ends thereof and forming screen-like guards through which air is admitted to the duct, and canopy-like ears on the ends of one of the channel-like parts and projecting over the perforated ends to prevent external drafts from interfering with ow of air through said perforated ends into the ducts, said ears forming attachments for a bail of the lantern.

4. In a lantern, a fount, a base member fixed upon the fount, a ring member having openings in opposite diametrical sides thereof, a hollow cross bar having ends projecting outwardly from said openings and provided with air inlets, a burner unit carried by the cross bar and having connection through said hollow cross bar with the air inlets, canopy-like ears on the ends of the cross bar and extending over the air inlets, and a bail connected with said ears whereby the entire weight of said lantern is carried by the bail through the cross bar.

5. A lantern including, a fount, a base plate having fixed support on the fount, anchoring collars on the base plate provided with through bores, a top assembly including a ring member having openings in opposite diametrical sides thereof, a hollow cross bar having ends projecting outwardly from said openings and provided with air inlets, a burner unit carried by the cross bar and having connection through said cross bar with the air inlets, a generator fixed to the base plate and having a tip extending through said cross bar and discharging into the burner unit, rods having fixed connection with the projecting ends of the cross bar and shouldered lower ends seating against the anchoring collars, threaded terminals of the ends of the rods extending loosely through said bores of the anchoring collars, nuts on the threaded terminals and having shrouds rotatably engaged in said bores to center the rods with respect to the anchoring collar to secure said top assembly to the base plate and maintain a denitely fixed relationship of the orifice tip to the burner unit, and means for attaching a -bail to the ends of the hollow cross bar whereby the entire weight of the lantern is transmitted through the cross bar to said bail.

BOYD W. 'IUILIS