US908997A - Oil-stove. - Google Patents

Description

W. R. JEAVONS.

OIL $TOVE.

APPLICATION FILED MAY 2, 1908.

Patented Jan. 5, 1909.

4 2 0 K3 0 D Z o If D O O 0 O O o y I MM O W N 7 7 6 E I [HZ/E2712 I UNITED srrATEs PATENT oFFIoE.

' WILLIAM R. JEAvOnsoFoI nVEL-AND, onro. V

' orL-sTovE.

Specification of Letters Patent.

Patented Jan. 5, T9095 Application filed. May 2, 1908. Serial No. 430,432.

s invention relates to oil stoves and more especially to that class having burners wherein a blue flame is produced from a wick without the provision of perforated commingling tubes.

The general object of the invention is to improve the efficiency of such burners. More specifically stated, the object of the invention is to provide effective means whereby the disagreeable humming noise produced by the vibrations or fluctuations of air about the flame may be avoided.

Generally speaking, the invention may be defined as consisting of the combinations of elements embodied in the claims hereto annexed and illustrated in the drawings forming a part hereof, wherein a Figure 1 represents a vertical sectional view taken through a burner constructed in accordance with my invention, a portion of the supply pipe and the air distributor looking means belng shown in elevation; Fig. 2 represents a view, partly in section and partly in elevation, of a modification of the invention shown in Fig. 1; and Fig. 3 represents a sectional detail on the line 3--3 of Fig. 1. r

.n my Patent No. 848,828, issued April 3nd, 1907, I have disclosed one means for preventing the disagreeable humming noise which is liable to occur in blue flame burners of thetype wherein the blue flame is produced fronra wick without'the employment of perforated commingling tubes- The con'- struction disclosed in said patent effectively prevents the humming noise referred to, under certain conditions. Under adverse conditions of wick and air supply, however, the construction shown in the patent will not always prevent the disagreeable noise re ferred to. the upper portion'of the collar to form a shield, the air stratum which is supplied between the collar and the outer-wick tube is caused to flow evenly and steadily alongside of the outer portion'of the flame and hold the I have found that, by extending,

flame smoothly yet rigidly inv constant shape, so that extremely adverse conditions, such as the unequal air currents or the formation of strong air eddies within the outer drum or chimney will not affect the-smoothness of this air stratum and thus the vibrationsinthe flame referred to which are the cause-of the disagreeable humming noise are pre= vented.

With the type of burner illustrated herein, the full operative height of the wick is-sube stantially midway between the plane of the top of the outer wicktube and the lane of the lower outer edge of the sprea erpthe normal excursion of the wick is from below this midway osition to about such midway position. I iave found that. by constructing the collar which surrounds the outer wick tube in such manner that it is provided with a relatively narrow or restricted portion about midway between the top of the wick tube and the bottom of the outer edge of the spreader and by providing such collar with a relatively smooth throat or interior therebelow and by providing the collar with: an outwardly flaringportion above such restricted portion, I amable to overcome the objectionable noise referred to. This construction delivers the air in a smooth, stron even current through the throat of the col lar-and' alongside of the flame above the- 'throat, without the production of air eddies,

which would destroy the smoothness of such flow. The lack of rigidity and smoothness of such air flow would contribute to the conditions which produce the objectionable humming noise of the flame.

To obtain the best results, the contour of the flared portion of the collar above the restricted portion or throat should be such as to maintain between itself and the flame an air passage of substantially constant width, as such construction better avoids the formation of eddies in the air stratum above the restrict ed portion of the collar. Furthermore, by extending the collar above the restricted portion thereof nearly to the full operative ieight of the flame, the body portion of the flame is protected from eddies and an other air disturbances that may exist Wit IiILtllB drum. The restricted or throatportion of the collar must not be so high as to prevent a slight outward drift or flattening of the flame by the air which is discharged under the spreader from the interior of the wick tube. This air current from under the spreader tends in a more or less degree to direct the flame outwardly oyer the air current rising through the collar and. this outward drift or direction of the burning vapors more surely msures the production of a blue flame. The best results are produced by extending the top of the collar to a point somewhat above the lower edge of the spreader, as this .10 shields nearly all of the body portion of a maximum flame from eddies and other air disturbances within the drum.

Describing the parts by reference numerals, 1 denotes the outer and. 52 the inner wick tube of a burner. 3 denotes the wick within said tubes, said wick being provided with a carrier 4 adapted to be engaged by the star wheel 5 on an inclined shaft 4 7' denotes the outer ring of a centering de-' vice'for the s reader, and 8 inwardly projccting arms having at their inner ends a rin 19 for the spindle 10 which carries the air dei ector. This air deflector comprises a frusto-conical perforated ring 11 secured at its upper end to the spreader 12, as by means of a suitable number of eyelets The ring 11 and spreader 12 are secured to the upper end of spindle 10.

14 denotes an upwardly projecting ring which is secured at its lower end. to the vertical skirt 15 of ring 11. Ring 14 is of suiliciently less external diameter than the inter nal diameter of wick tube 2 to enable it to be freely and rcmovably fitted thcrcinto and to provide a'space therewith. The upper end of this ring is flared or bent inwardly, as

shown at 16, the base of the flared portionbeing formed'by a knee or bend in substantially the same plane as the uipor end of wick tube 1. The ring 1 1 will lJG provided with perforations 17 which may be located both above and below said knee or bond. The inwardly flaring portion 16 provides an air barrier to protcct the inside of the wick from the rapid air flow and to provide for the rapid flow of air above the wick, the top of said barrier, being in substantially the same lane the top of the wick when the latter is raised to full operative height, namely,

, about midway between the top of the outer wick tube and the lower outer edge of spreader 12. The outer wick tube is provided with ledge 18, which may be conveniently formed by bonding the metal thereof outwardly, which. ledge constitutes a seat for the collar 19. This collar is provided with a suitable number of inwardly extending projections or supports 19 which are ada ted to engage 6o l6( go 18 and support the col or in operative relation to the burner. The lower end of the collar comprises an outwardly flared skirt 20 depending from the horizontal ledge 21 which forms a support for the inwardly t5 cprved lower end 22 of the drum or chimney sensor 23. The inwardly projecting portion 22 may be, and preferably is, provided with a numher of perforations 24 for the admission of a measure of air to the base of the drum outside of the collar, as this tends to ikeep the '70 drum walls cooler. The collar 19 extends upwardly from ledge 21 to a point below the top of the outer wick tube, whence it projects inwardly toward a point above the top of the wick tube and thence flares outwardly, the upper edge of the collar extending somewhat above the lower ed o of the ireader. The upper end of the co lar is pre 'erably formed by bending the same in the manner shown in Fig. 1; that is to say, so that the inner surso face of said collar projects inwardly to a plane about midway between the top of the outer wick tube and the lower edge of the spreader and thence projects outwardly, the upper edge of saidcollar being above the lower edge of the spreader, and it is desirable that the inner surface of the collar be substantially smooth and unbroken, i articularly from the throat or most restrictci portion 19 thereof downwardly at least as far as the top of the outer wick tube. By reference to Fig. 1, it will be seen that the location of the outwardly flaring portion of the collar does not prevent the spreading of the flame 25 by the air su plied from the interior of the burner and hat a relatively smooth throat or into rior is provided for the sup ly of the air in a smooth even current to t e exterior of the flame and that the contour of the flared portion 19 of this collar is such as to maintain between itself and the flamean air passage of substantially constant width, whereby eddies above the contracted portion'are provonted.

In Fig. 2, I have shown amodification of the collar 1.). lnthis modification, 26 denotes the body of the collar which is similar to the lower portion of collar 19 and is provided with inwardly extending projections 27 on gaging the ledge 18 on the outer wick tube. The body 26 extends in a vertical direction from the ledge 26 to about the same distance as the vertically projecting portion of 19, whence it is bent inwardly, as shown at 29. At the base of the inwardly bent portion 29 there is provided a ledge 30 which, supports the lower inturned end 31 of an outwardly flaring collar 32. The upper edge of 29, which forms the throat portion, is in substantially the same plane as the most re stricted portion 19 of the collar 19 and the upper edge of 32 occupies the same position with reference to the flame and the spreader as does the upper edge of 19. The function and mode of operation of the collar shown in Fig. 2 is the same, or substantially thc same,

as the function and mode of operation (if the collar shown in Fig. 1.

3.3 denotes thesup' ly pipe, through which oil is supplied to the urner, and 34 a hook 130.

soldered to the inner wick tube and engaging the supply pipe in the same manner as de-. described in my Patent No. 848,828.

, 33 denotes a tubular connection projecting from the outer wick tube at a point opposite the book 34. The tube 33 projects down-' wardly at its outer end, as shown at 35. The lower end of 35 is reduced somewhat, as shown at 35, so as to fit within the sleeve 3%. This sleeve forms part of the detachable connection between the burner and the supply pi e. .1

227 denotes a Washer of compressible and more or less plastic material, which is mounted within sleeve 36.and has a central perforation therethrough for a nipple 38. The lower end of sleeve 36 projects inwardly, to provide an annular flange 39. The internal diameter of this flange is considerably greater than the external diameter of nipple 38 The upper end of this nip le rejects above the washer 37 and is pre era ly provided with a ledge 40, by which it Wlll rest upon the top of the washer. The upwardly extending end of nipple 38 is adapted to enter the bore of the tubular connection 33 to ilot the same to central position on was or 37. Thesupply pipe may be provided with a recess 41, providing a fiatscat for the ledge, 39, and 1s rovided with an aperture, preferably threat ed, for the receptionof the threaded lower end of nipple 38.

To secure the iarts described-to the supply pipe, l. preferably employ a strap consisting of two side members 42 and 43, which may be'connected at their outturned lower ends 'the'nipple 38 and such end.

by means of a loop 44 applied thereto, as shown in Fig 3. 'lhrough the upper end of the strap there-extends a short bolt 45, the lower pointed end whereof engages a seat at the to) of connection A nut 46 is fitted wit in the up or portion of the strap and receives the bot 45. This nut is held against rotation by the strap whereby, on rotating the bolt, the strap may be loosened or tightened.

As previously stated, washer 37 is of material which will be compressed by tighten ing the bolt 45. The material which I preferably employ for this purpose is lead. On tightening up on bolt 45, this lead is compressed and is squeezed through the annular space between flange 39 and nipple 38 to the seat which supports the flange, also upwardly between the sleeve and the reduced lower end 35 of connection 33 and between This construction provides an extremely efiicient form of connection between the supply pipe and the burner. it is not necessary to take any special pains to provide a smooth seat inrecess 41 for the connection, as the lead will accommodate itself to any irregularities of surface. Furthermore, the manner in which the lead flows, under compression, around the outside 'pipe 33.

and the inside ofthe reduced "lower end 35, insures a tight joint at this place. advantage in this construction resides in the fact that it dispenses with the use of a soldered joint, enabling the pipe to be tinned and lacquered before connecting theburner thereto, without producing the discoloration of the tin and lacquer coating on the pipe which would result from soldering the burner connection thereto. 1

At the end of the pi e, I use a detachable plug which embodies t 1e same principles as the connection hereinbefore described. This plug comprises a body 47 having a base from which there projects the threaded plu proper 49. i

50 denotes a washer which is of such in--' ternal diameter than the externa diameter of 49. This sleeve is of greater length than the depth of said washer and is of slightly A great greater diameter than the end of the supply In using. my plug, the end 49 is threaded into the supply pipe and is set up firmly thereagainst. *Tl'llS compresses the washer, which. is preferably of lead, squeezing some of the material thereof throu h the annular space between flange 52 and t 1e unthreaded 'portion53 of said pin to the seat which supports the things 52 an also squeezing some of the washer material into the space between the outer end of the flange and the supply pipe. The construction described provides simple but very effective means for forming a ti ht but detachable I closure for the end of t e supply pipe and prevents the plug from jarring out in shi' ment. To facilitate the adjustment of t e plug, the outer end thereof is provided with an aperture 54 for the application of a rod, or

other adjusting means thereto. The construction of the joints or connections formed between the burner and the supply pipe and between the plug 47 and the su ply pipeconstitutes the subject matter 0 my'application No. 462,77 5, filed November 16th, 1908.

For the purpose of automatically locking the spreader and the associated partsin position by the act-of inserting t and. such parts into the upper part of the inner wick tube, theair distributor may be provided with an automatic locking device 55 adapted to engage the arms 8, as shown,

e spreader.

not

described and claimed' in my Patent-No.

871,593, issued Nov. 19th; 1907.

Having thus described my invention, I claim:' V

1. In an oil burner, the combination of inner and outer wick tubes, 'a 5 reader extending above the upper end 0 said tubes and-spaced therefrom, a vertically extending ring within and spaced from the inner wic I such contracted tube and forming an air barrier for the inside of the wick, and a collar surrounding the up-- per end of the outer wick tube and extending upward to the plane of the spreader, said collar being contracted in diameter at a point between the tops of the wick tubes and the spreader.

\2. in an oil burner, the combination of d. outer wick tubes, a reader ex- 7 eve the upper end 0 said tubes and spaced therefrom, a vertically extending ring within and spaced from the inner wick tube and forming an air barrier for the inside of the wick, and a collar surrounding the u per end of the outer wick tube, said collar being contracted in diameter at a point between the to s of the wick tubes and the spreader and eing of larger diameter above ortion.

3. in an oil urner, the combination of inner and'outcr wick tubes, a spreader extending above the tops of said tubes, an air barrier within the inner tube and extending above" the top of the same, and a collar circuinscribing the upper end of the outer wick tube and projecting upward to a oint as -hi =h as the lower ed e of the s rea e1 said collar forming a smooth unbro en passa eway about the top of the, outer wick tube or the supply of air therethrough and being of larger diameter above the top of the plane of the air barrier. V

4t. In an oil burner, the combination of inner and outer wick tubes, a spreader extending above the tops of said tubes, an air barricr within said tubes and extending above the tops of the same, and a collar circumscribing the upper 'portionoi the outer wick tube and projecting upward to a point above the lower edge of the spreader, said collar forming a smooth, unbroken passageway about the top of the outer wick tube for the supply of air therethrough and being of larger diameter above the plane of the top of the air barrier.

5. In an oil burner, the combination of inner and outer wick tubes, a spreader extending above the tops of said tubes and spaced therefrom, a ring within the inner wick tube and projecting upwardly to a plane between the top of the wick tubes and the bottom of tires-spreader to form an air barrier for the inscene? collar being in a lane between the top of the outer wick tu e and the bottom of the spreader.

6. In an oil burner, the combination of inner and outer wick tubes.v a spreader extending above the tops of said tubes and spaced therefrom, a ring within the inner wick tube and projecting upwardly about midway between the top of the wick tubes and the bottom of the spreader to form an air barrier for the inner surface of the wick, and a collar surrounding the upper portion of the outer wick tube and having an inwardly projecting portion with an outwardly tion therea'bove, the sum lest diameter of said collar being in a plane substantially midway between the top of the outer wick tube and the bottom of the spreader.

7. In an oil burner,- the combination of innor and outer wick tubes, a spreader extending above the upperends of said tubes and spaced therefrom, a collar surrounding the upper end of the outer wick tube and spaced therefrom, said collar having its upper end flared outwardly, such flared portion extending above the outer edge of the spreader, and a vertically extending ring within and spaced from the inner wick tube and forming an air projecting POT".

ner and outer wick tubes, a spreader extending above the upper ends of said tubes and spaced therefrom, a collar surrounding the upper end of the outer wick tubes and spaced therefrom, said collar having its upper end portion flared outwardly and such outwardly flaring portion extending above the outer ed e of.the spreader, and a vertically exten ing ring within the inner wick tube and forming an air barrier for the inside of the wick.

' in testimony whereof, I hereunto affix my signature in the resence of two witnesses.

W LLIAM R. JEAVONS.

Witnesses:

J. B. HULL, BRENNAN B. WEST.

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