US1487206A - Liquid-fuel burner - Google Patents

Description

March 181, 1924,.` l 1,487,206

L. S. CHADWICK LIQUID FUEL BURNER Filed Feb. 2e. 1921 2 sheets-'sheet 1 Mrch 18 1924. 1,487,206

L. s. cHADwlcK LIQUID FUEL BURNER Filed Feb. 26 19.21 2 Sheets-Sheet 2 Patented Mar.' 178, i924.

tramos rarest man onenwrcis, or SHAKER rims-irre vinti/ien, oI-Iro, AssiGNo'R iro rHnoL-nvn- Lann murat raonucrs consent?, on onnvnnannor-Ird; A 'CORPORATION' or OHIO.

manila-runt BURNER..

Application tiled February 25,1921. Serial No. 448,116.

To all trimm t may concern:

le it known that l, Lim S. CHADWICK, a citizen ot the United States, residing'at Shaker 1Heights Village, in the county ot Cuyahoga and State of QhiO, have invented a certain new and useful Improvement in Liquid-Fuel Burners, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

This invention relates to liquid fuel burners ot tn@ class employing wicks and involvwick raising means having a limited movement and it has to do more particularly with means for automatically adjusting the wick with respect to the wick raising means each time the wick is cleaned or trimmed, thereby to compensate tor the shortening of the wick. The invention has reference also to a unique wick, rimming device.

The 'fundamental purpose of the invention is to provide inburners of the .class abovementioned an adjustable stop for limiting the movement of the wick raising means, especiallj7 yin a direction to elevate the wick; a lock :tor holding the 'stop in a fixed position; and a device, preferably a wick trimmer, which is adapted to be engaged over the wickguide and restrict the wick against being raised above a predetermined point, the device being designed to cooperate with the aforesaid lock to render it temporarily ineiiective so that the wick may be adjusted by the wick raising means to compensate lfor the part consumed or trimmed oii'.

yFurther objects are to provide a comparatively simple and .inexpensive construction involving the foregoing features that is especially convenient of use, thoroughly etlicient, and which lends itseiil readily to economical manufacturing`methods, the majority oi its individual elements consisting of sheet metal stampings which interlock and interiit in such manner as to reduce toa minimum the labor of assembling the parts.

The foregoing objects, and others which lwill become apparent as this description proceeds, are attained in the embodiments illustrated in the drawings accompanying and forming a part thereof and set forth in the claims appended hereto.

ln the drawings, Fig. 1 is a side elevation ot a burner incorporatin my improvements; F ig. 2 is aV plan view ot the wick trimmer; Fig. 3 is a fragmentary side elevation ofthe burner withthe trimmer ap? plied thereto in a position to trim the wick and cooperate withthe locking mechanismv to render it ineffective and release the stop,

a part ot the trimmer and 4burner beingY shown in section; Fig. 4 is adragmentary plan view of the burner;vFig. 5 isa section on the line 5 5 of Fig.I 4e, Figsp -64 and. 7 are sectional details-on therespective lines 6 6 and 7-7 ofFigs. 4c and 5;and Fig. 8 shows a modication of the invention.

The burner wherein I have shown my improvements incorporated is of the wellknown type involving `innerand outer wickv tubes l and 2, respectively, between which a cylindrical wick 3 is guided and `is adapted to be raised and lowered by meansot the f wick raising spindle 5 which, is encased within a tube 6 that is supported -from the outer wick tube 2 and carries pinions or star 'wheels 7 at its inner end whichV cooperate with the wick. A handvwheel 8 is applied to the outer end of the spindle for turning it. The vforegoing parts being common to both forms or" the invention herein illustrated, are designated bythe same Areference numerals in all views of thefdrawings.

In the form of theinvention illustrated in Figs. 1 to 7, a bracket 10` is fastened toV z the tube 6 a suitable distance inward` of its orwardend, and within a 'notch 1]. thereof is fulcrumed a locking element 12 that is shown as formed of sheet metal-as is also the bracket ll-and as having fingers 15 depending on opposite sides of the tube 46 in a positionto engage a thrust plate 16 that loosely surrounds the tubek and has an eX- tension 17 confined between the( opposed sides` of the locking relementl forwardly of the bracket 10. A sleeve 1,8 is shown as surrounding the tube 6 immediately adjacent the bracket 10. ,Mounted forlongitudinal and rotary movement upon the forward end of the tube 6 is the' hub portion19 ora stop plate 20, the plate having a rearwardly directed peripheral Hangs that is serrated to provide teeth 21 wherewith the nose `ot ythe locking element 1.2is adapted to interengage. A spring 25 is interposed between a collar 26, situated immediately inside the hand wheel 8, and the locking plate to retain the latter in its innermost ,or normal` position against Vthe sleeve 18. The iniiuence of the spring is transmitted to the lingers 15 of the locking element- 12 through the intervention of the stop plate and thrust plate 16 to rock the locking element upon its ulcrum and retain its nose in engagement with the teeth 21 and its rear end elevated to the position shown in Figs. 1 and 5.

The plate 20 is provided with spaced stops 27 and 28, the latter having two abutment portions 28L and 28", (Figs. 4 and 6). The hand wheel 8 is provided with a projection 30 that engages the stops 27 and 28 to limit the angular movement of the spindle 5, thereby to restrict the wick against being raised or lowered beyond a given point in the respective directions.

The wick trimmer, shown in Figs. 2 and 8, comprises a sheet metal shell 85 designed to fit down over the top of the wick tubes with an inclined annular portion 36 which engages with the upper ends of the tubes and bears upon the top of the wick when the wick is elevated to the plane of the tube ends. rlhe inclined portion 36 has a series of apertures the ends whereof constitute cutting lips 37 Jfor trimming 0H the charred portion of the wick when the trimmer is rotated by means of a handle 88 that is fixed to its center. Eeyond the outer wick tube, the shell of the trimmer extends downwardly and outwardly and terminates in a peripheral flange 39 which engages the rear end of Vthe locking element 12, the parts being so proportioned that when the portion 36 of the trimmer bears upon the wick tubes, the locking element is rocked to ineilective position, as indicated in Fig. 8. When the element is thus rocked, it forces, through its fingers 15 and the thrust plate 16, the stop plate 2O outwardly along the tube 6 against the tension of spring until the stop plate is in contact with or in very close proximity to the inner end of the projection of the hand wheel. rThis results in a disengage ment ofthe locking element with the teeth of the stop plate so that the stop plate, and consequently the spindle, are at liberty to be rotated in a direction to elevate the wick except as restricted by the limited movement of the wick due to the presence of the trimmer on'the wick tubes. lt will be seen, therefore, that the wick may be elevated into irm contact with the inclined portion 36 of the trimmer after the trimmer has been rotated or oscillated to trim od the charred portion of the wick. This determines then the extent to which the stop plate may be turned, through the engagement of the projection of the hand wheel with the abutment 28a orp the stop 28. The trimmer may now be removed, allowing the parts to' resume normal position with the stop plate and locking element interengaged so as to hold the stop plate against further movement. When the stop plate is in normal position, the projection 30 of the hand wheel escapes the abutment 28n ci the stop 28 and engages the abutment 28b thereof. rlhis additional angular movement allowed to the spindle after the parts resume normal position permits the wick to be elevated to high7 position above the wick tubes.

Thus it will be seen that my invention provides a thoroughly reliable means for limiting the travel of the wick, and one which is adjusted each time the wick is cleaned to compensate 'for the porticn trimmed off, the adjustment being in effect automatic in that it is accomplished by the mere 'trimming ci the wick and requires no additional attention or care.

It will be observed that practically all of the elements involved in the device are censtructed of sheet metal, and that they interiit in such manner as to obvia-te the need oli pins, rivets, bolts or other securing or pivotal means the locking element 12 being designed te lit over the upper end et the bracket 10 so as to have bearing in the notch 11 thereof, and it is held in such position by the spring 25, through the intervention oie the lock plate 2O and thrust plate 1G, lthe latter plate being held in proper angular position by its extension 17 being confined between the side walls ot the locking element 12.

ln Fig. 8 the trimmer 40 is made to lit down over the outer wick tube so as to prevent its rocking on the burner, and its outwardly directed portion 41 is designed to fi pass down to the rear ot the inner end ci the locking element 42. This element is shown as pivoted upon a pin 48 supported by a bracket 44 that rises from the tube 6. In other respects, the present form of the invention is identical with the one above described. As to operation, in the latter modification the holding of the locking element 42 in ineffective position is accom plished by the presence of the flange of the trimmer between the comparatively straight inner end of the locking element and the opposed portion o1c the burner, thus obviat ing the need of holding the trimmer down against the burner tubes while making the wick adjustment.

To remove the wick :from the burner, as for the purpose of replacing it by a new wick, the rocking element (12 in the iirst form of the invention and 42 in the second) may be rocked by the operator to disengage it from the stop plate 20, after which the spindle may be rotated tree-ly to elevate the wick beyond the pinions or star wheels 7 so that the operator may lift it from 'the n burner; the part can be retained in the same condition while inserting a new wick.

Having thus described my invention, what l claim is 1. ln combination with aY burner involvi:

ing to arrest movement of 'the'wick in anupward direction above a predetermined point, saiddevicel when 1n ksuch position cooperating Vwith vand the looking means ineffective.

2. In combination with aburner involving a wick guide andimeanfs for raising the wick, a movable stop for limitingthe movement ofy said means, means for locking said stop against movement, and a wick trimming device adapted fto be placed over the wick .guide and serving to arrest movement of the wick in an 1ipvv'ard "direction above the top of the wi'ck g1 1 id'e, `said'device when in such position cooperating with' and rendering the locking means ineffective.

3.V In combination '.witha burneninvo-lving a wick lguide and means for raising the wick, a movable `graduated stop having a U main and lan auxiliary abutment vfor limiting the movement ofthe wick raising means, means for locking the stop against movement, and a device adapted to beengaged over the wick guide to; restrict the wick against being vraised abovebthe 'topof the guide, vsaid device when in sueh position cooperating with the `locking meansl for rendering it ineffective and Yfor shifting the stop so that its auxiliary abutment'j serves to limit the movement .of the wick raising means, the' stop assuming normal position upon the removal of the aforesaid deviceV thereby to cause the main abutment to serve as a stop for the wick raising means.

et. In combination with a burner involving a wick guide and a wick raising spindle,

I- spindle having a stop engaging portion, a

stop supported in operative relation to said portion and movable axially of and angularly with respect to the spindle, said stop having a main and an auxiliary abutment spaced axially with respect to each other and wherewith the stop engaging portion of the spindle is arranged to engage, means for locking the stop against angular movement, and a device adapted to be placed over the 'i top of the wick guide and serving to re- `strict the wick against being raised above the top of the wick guide, said device when in such position cooperating with the locking means Vfor renderinol it ineffective Vand for shifting the stop axially of the spindle so that its auxiliary abutment serves to limit the movement of the wick raising means, the stopassuming normal position upon the removal of the aforesaid device thereby to `cause the main abutment to serve as a stop "for the spindle.

V6. In combination with a burner involving a wick guide, a wick raising spindle and a tube encasing the spindle and beyond the end whereofthe spindle projects; a bracket supported-by and spaced inwardly from the end of the tube, a locking element pivotally supported by the bracket and havingiingers depending on opposite sides of the tube, a hand wheel secured to the spindle beyond the Vend of; the tube, a collar disposed inside rthe Ahand Wheel, a stop plate slidable along the tube, a spring interposed between the collar and stop plate and tending to force the stop plate toward the fingers ofthe locking element thereby to rock the locking element jon its pivot and project a part of it into interlocking engagement with parts of the stop plate, stops carried by the stopplates and spaced angularly apart, the hand wheel having a projection for engagement with said stops, and a. device adapted to be placed over the top of the wick guide to restrict the wick against being raised above a predetermined point, the device having a part for cooperation with the locking element to rock it on its pivot whereby the locking elementwill be withdrawn from interlocking engagement with the stop plate andthrough its fingers will move the stop plate along the tube in opposition to the aforesaid spring.

7. In combination with a burner involving a wick guide, a wick raising spindle, and a tube encasing the spindle and beyond the end of which the spindle projects; a sheet vmetal bracket supported by thetube and spaced inwardly from the end thereof, said bracket having a notch in its forward side adjacent its upper end, a sheet metal locking element having an aperture through which the end of the bracket is engagedv so that the element has pivotal bearing within the' notch of the bracket, the element having fingers/depending ron opposite sides of ki? l) the tube, a thrust plate loosely mounted upon the tube forwardly of the bracket and having a part interiitting with the locking element to prevent the thrust plate from turning with respect to the tube, a stop plate slidably mounted upon the tube adjacent its end, the stop plate having a series of peripheral teeth wherewith the forwardl end of the locking element is adapted to engage for holding the stop plate against Vangularmovement, a hand wheel secured to the outer end of the spindle, a collar situated immediately inside the hand wheel, a spring interposed between the collar and stop plate, stops carried by the stop plate and spaced angularly apart, one of said stops having a main and an auxiliary abutment portion, the hand wheel having a projection for en- -gagement with said stops, and a device adapted to be engaged over the wick guide for restricting the wick against being elevated above the predetermined point, said device having a part for cooperation With the rear end of the locking element to rock the element upon its pivot thereby to disengage it Jfrom the peripheral teeth of the lock plate and, through its Aingers and the intervention of the thrust plate to move the stop plate outwardly along the tube, the aforesaid projection of the hand wheel when the parts are in said condition, being arranged to engage the auxiliary abutment of the aforesaid stop.

8. A trimmer for wicks of oil burners of the type involving inner and outer wick tubes, the upper edge of the outer wick tube being higher than the corresponding edge of the inner Wick tube, said trimmer consisting of a circular shell adapted to iit down over the outer wick tube and having a Jfrusto-conical portion bearing upon the tops of the tubes, said portion being provided with apertures, the edges whereof are within the plane of the under surface of said portion and constitute cutting lips for engagement with the top of the Wick when the toppof/the wick is vsubstantially flush with the tops of the wick tubes.

9. A trimmer for wicks of oil burners of the type involving inner and outer wick tubes, said trimmer consisting of a member that is provided with an annular part having a smooth under surface arranged to bear upon the tops of the tubes and wick, said part being provided with apertures the edges whereorl constitute cutting lips that arewithin the plane of said smooth under surface whereby said surface serves to smooth the Wick after said cutting lips have trimmed the wick or removed the char therefrom.

10. A trimmer for wicks of oil burners of the type involving inner and outer wick tubes, the upper edge of the outer wick tube being higher` than the Acorresponding edge of the inner wick tube, said trimmer consisting of a circular` shell adapted to fit down over the outer wick tube and having a rusto-conical portion bearing upon the tops of the tubes, said portion being provided with apertures the circumiierentiall;7 spaced-apart edges ivhereor" converge inwardly with respect to the radial axes of said apertures and constitute cutting lips, whereby, when the trimmer is rotated alter nately in opposite directions, said lips will tend to flare outwardly the fibers o1 the wiel; against the outer Wick tube.

In testimony whereof, l hereunto aiix my signature.

LEE s. crianwicir.

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