US1471543A - Wick stop mechanism for oil burners - Google Patents

Description

3 Sheets-Sheet.l 1

f CHADWICK WICK STOP MECHANISM FOR OIL BURNERS Oct, 23, 1923.

Oct. 23 1923. 1,471,543

L. S. CHADWICK WICK STOP MECHANISM FOR OIL BURNERS Original Filed Jan. l2. 1922 3 Sheets-Sheet 2 n Aw 2 f Oct. 23 1923.

L. s. cHADwlcK WICK STOP MECHANISM FOR OIL BURNERS original Filed Jan. 5 Sheets-Sheet 3 rra . Patented @et 23, i923.

graras LEE S. GHADWICK, OF SHAKER EEGEHTS, OHO, ASSIGNOR TO THE CLEVELAND .METAL -1l,4?1,543 vFries.

PRODUCTS COMPJY, OE CLEVELAND, OHIO, A CORPORATION 0F OHIO.

wrox sro? irnonanrsrr non ori. sonrisas.

Application filed January 12, 19272, ,Serial No. 528,814. Renewed June 6, 1923.

To @ZZ whom t may concern:

Be' it known that l, LEE-S. Crianwron, a citizen of the United States, residing at Shaker Heights, in the county of uyahoga and State of Ohio, have inventeda certain new and useful vimprovement in Wick Stop Mechanism for Oil Burners,l

of which the following isa full, clear, and enact descriptioin'reference being hadV to the accompanying drawings.

rl`his invention relates to automatic wick stop mechanism for liquid fuel burners and is of the saine general character as the inventions which constitute the subject matter of my former applications Serial Nos. fi-8,1055, lei-8,109 and 449,842, the two first mentioned cases having been tiled February 26, 1921 and the latter March 5, of the same year. A. further development of the same subject matter is exhibited in an application entitled Automatic wick stop and led by me concurrently herewith.

The primary object of my present invention, like that of my other inventions above referred to, is to provide stop mechanism for limiting the upward movement of the wick and which controls the wick raising means and is, itself, under the direct control of the wick, having a part which engages the burned portion ofthe wick and which is actuated thereby for throwing the mechanism into cooperation with the wick raising means, said part withdrawing from the burned portion of the wick after it has served .the aforesaid purpose. A further object is to utilize, for snch part or actuator, the dame spreader that constitutes a part of burners of the character to which my invention relates, the spreader after serving its purpose as an actuator of the aforesaid mechanism, withdrawing to a position wherein it funetions purely as a flame spreader.

A. further and more specific object and one which distinguishes my present invention from the others referred to, is the provision of means for temporarily throwing out of commission the wick raising mechanism so that a dwell of the wick is effected during which the name spreader may be f elevated to its high position, the wick raising mechanism thereafter resuming its 'operative condition to elevatethe wick further until its operation is arrested by the stop mechanism.

urhther objects, relating `more to structural improvements, willy appear` as this description proceeds.

rihe several objects ofi-the invention are obtained in the embodinlents'of the inven-V tion illustrated in thedrawings accomout of commission, the position of the parts when'the spreader is in high position being suggested by the dotted lines; Fig. 4 shows the parts of Fig. 2 in what may be termed intermediate7 position; Fig. 5 shows the same parts as Fig. 4 in what Vmay be termed high position; and Figs.

6 and 7 are views similar to Figsl and 2 of a modified form of the invention.

The burner proper, in both forms of the outer wicky tubes 1 and. 2, respectively, which are joined at their lowerends by an annular wall 3 so as to enclose a space 5 within which a tubular wick 6 is contained,

the same being equipped with a carrier 7. l

ln the iirst form of the invention, that illustrated in Figs. 1 to 5, a rod 10depends from one side of the carrier 7 through a-suitablc stuHing gland 11 that is applied to the lower ends of the wick tubes, and a suitable distance below the gland `the rod is provided with teeth 12 constituting thereof a rack that meshes with a pinion 13 that is-looscly mounted upon the wick raising spindle 14. The pinion 13 is shown as provided with a clutch member 15 which cooperates with a clutch member 16 that is slidable on the spindle 14, the pinion 13, with the clutch member 15, being confined against longitudinal movement by colf lars 18 disposed on opposite sides thereof. The clutch member 16 connectsthrough a neck 19 ywith a disk 20 between which and 'a collar 21 on the spindle there is cominvention, is shown as comprising inner and f.

er, and it is -held against endwise kmovement therein by the enga `ement of one of the collars18 with .the a jacent bracket and by jthe engagement of a similar collar 26 with the other bracket.

A spanner 30 is rnovablyN supported within the inner wick tube 1 a suitable distance below its upper end, and a flame spreader 31 is adapted to be detachably connected thereto as byfmeansof vhooks 32. A flange 33 ofthe` flame spreader projects over the wick space in a position to be engaged by the wick when the latter is elevated. A

" bar 35 issec-ured to-and depends from the spanner 30 and at its lower end terminates in a loop 37 which surrounds a gear 38 that is secured to the spindle 14. This loop has, on its inner side, a single tooth 39, which, when the parts are `in normal or low position is downward beyond the reach of the teeth of the gear 38. A segment 40 is pivoted, at 41', to a lateral extension 42 of the loop 37' and is limited in movement relative to theloop bystops 43 and 44 that are carried bythe latter. The segment is normally held downward against stop 43 by a spring 45` \vhich"lias one of its ends connected to the endof the segment-40 remote from its toothed end, while the opposite end of the rsprin is anchored at 46 to the loop. A suit` able cistance above the loop 37, the bar 35 carries a roller 48 that is adapted, when the b ar is elevated, to override a roller 50 mount` ed at the outer end of the horizontal branchr of an angle lever 51 that is pivotecl at 52 to an extension of the bracket 25. The lower end ofthe other branch of this lever is dis` posed between the clutch member 16 and the disk 2O and is adapted to engage said disk and retract the clutch member 16 from engagement with the clutch member 15 against the action, of spring 22 when it is swung through the cooperation of the roller 48 with the vroller 50. The clutch member 16 is hel-d against rotation with respect to theshaft as by means of a pin 53 which eX- tends through a slot 54 in the neck 19.v

From the foregoing description it is evident that when the spindle 14 is turned by means of a hand wheel 55 that is secured to its'outer end it will move the rack 12 through the intervention of the pinion 13 and clutch members 15 and 16. Assuming that theI spindle is turned in a direction to elevate the wick, this action' will continue until the upper" end of the wick engages the flange 33 of the flame spreader 31 and elevates the spreader which will result in a lifting of the spanner 30 and an elevation of" the bar 35 connected thereto. Just as soon'a's ythe bar 35 has been raised sutiiciently toengage the tooth 39 of the loop 37 with the teeth of the gear 38, this gear,

"which, as will be observed from the draw` ings, is shown as of greater diameter than thepinion 13, will elevate the bar 35 at a considerably faster rate of speed than that at which the wick is travelling and consequently will immediately lift the spreader from the wick. though not essential. As the bar rises, its roller 48 engages the roller 50 and swings the lever 51 in a direction to disengage the clutch member 16 from the clutch member 15, thus freeing the pinion 13 from the spindle, allowing these parts, with the rack 12 and consequently the wick 6, to remain at rest until such time as the roller 48 passes beyond the roller 50, releasing the lever 51 and permitting the spring 22 tore-engage the member 16 with the member 15 and thus lock the pinion 13 again to the spindle 14. By this time, the tooth 39 of the loop 37 has passed above the gear 38, as shown in Fig. 5, the teeth of the segment 40 having in the meantime been brought into mesh withthe gear. (This maximum elevation of the loop 37, with the bar 35, marks the higlfposition of the fiame spreader.) rlhe gear, therefore, and the spindle 14 as well,

may continue to rotate in a direction to elevate the wick until the segment 40 engages the stop 44. This constitutes the stop which limits the upward movement of the wick. To ret-urn the parts to their former positions requires only the reversal of the foregoing operation. AThen it is desired to clean or remove the wick, the spreader maj.IY be disengaged from the spanner 30 by turning it sufiic-iently and in the proper direction to disengage its hooks 32 from the parts of the spanner wherewith said hooks cooperate.

In the form of the invention illustrated in F i gs. 6 and 7,v the construction of the burner is altered somewhat from that previously described'and resembles to a certain degree the form of burner shown and described in detail in my copending application Serial No. 448,108 above referred to. Vertical walls 60, spaced a suitable distance apart, extend diametrically across the inner wick tube 1 and the space between them is closed at its lower end by a wall 61, said space opening through slots in the inner wick tube into the wick space 5. A cross meinber 62' has its opposite ends connected to the wick carrier 7 and at its center is secured to a rod 64 which rises a suitable distance above the top 65 that closes the upper end of the space between the walls 60. A rack carrying member 66 is att-ached to the upper end of the rod'64 and extends laterally and `then downwardly therefrom. A rack 68 is fastened to and depends from the lower end of the rack carrying member 66 in a position to cooperate with a wide faced pinion 69 that is secured to the wick raising spindle 7 O which is equipped, at its outer end, with the usual hand wheel 71. The spindle is journaled in a bracket 72 that This action is desirable,

larmes .eeth ott-he pinion 69. Y

A 'Spanner 76 is slidable within the upper end or the inner wick tube and pivot'ally' connected to it at 77 is a bar 7 8 which terminates at itsk lower end in a loop '79 that sur-l rounds the pinion 69. This loop is similar' to the one described in connection with the former embodiment of the invention and has one tooth 80 for cooperation with the teeth of the pinion, and pivoted to the loop, as by means oi? the pin 8l, is a segment 82 which is normally held against a stop 83 by a spring 84 so that the teeth of the segment form, in e'ect, a part of a rack of which tooth 8O is a member. A stop 85 limits the upward movement of the segment- 82. The bar 70 carries a roller 88 which is adapted to override a roller 89 that is supported through a bracket 90 from the ad]- acent wall 60.v The raclr carrying member 66 has a roller 9l`which bears upon the near side of the bar 78. -A flame spreader 93 is adapted to be locked to the Spanner 76 as by means of its hooks '94s.

In this form of the invention, when the spindle 70 is turned in a direction to elevate the wick by reason or its operative connections therewith through the rack 68, member 66, rod 64, and cross member 62, it will cause the wick to engage the spreader and through it lift the spanner 76. This will result in the roller 88 riding over the roller 89, causing the bar `78 to be swung in a direction to displace the rack carrying member 66 laterally against the tension ot spring 75 sutliciently to remove the rack 68 from the toothed portion of the pinion 65)at which time all movementoi the wick will cease until the roller 88 passes beyond the roller 89 after which the rack may resume its cooperation with the toothed portion orp the pinion. The operation thus tar results in the tooth 8O ofthe loop 79 passing beyond the pinion 69 so that further elevation of the spreader is prevented; Vand thereafter the spindle 70 may be turned to elevate the wiclr until the segment 82, with the teeth whereorc the pinion 69 is now in mesh, is moved against the stop 85, when the pinion will be loclred against further rotation in a direction to raise the wick.

Having thus described my invention, what lclaim is:

l. ln aburner of the character set forth, the combination ot wick raising means, a

Yment/ot said member by the wick.

'y 2. ln a burner ofthecharacter set forth,

the combination of wiclr raising means, a

memberk arranged to be engaged and moved by Vthe wick, and operative connections between said member and the wiclrraising means whereby the latter is momentarily thrownout of operation through the-initial movement oi said'member by theV wick, and said member ismovedout of contact with the wick by the wiclr raising means.

' 8. ln a burner of the character set forth, the combination 'of wick' raising'means, a member adapted to be engaged and moved by the wick, and connections established by the initial movement or said member whereby the member is moved by the wick raising means out of contactk with the wick, a dwell in the movement of the wick is eiected, and the movement of the wick subsequent to the dwell is limited. K

Ll. In a burner of the character set forth, the combination or' wick raising means capable o' being thrown into and out or" operative connection with the wiclr, a member adapted to be engaged and moved by the wick when the latter is elevated, connections' established between said member and the wiclr raising-means when said member has been initially lifted whereby the wiclr raising means is instrumental in further lifting said member tree from the wick, said connections serving, during the entire movement of the member,y to temporarily disconnect the wiclr raising means from the wick so that a dwell in the movement of the wick is eifected, and stop mechanism operatively Yconnected tothe wiclr raising means by the movement or the aforesaid member.

5. ln a burner of the character set forth, the combination'of a wlclr, a prime mover,

separable connections between lthe prime mover and wick, a member adapted to be engaged and initially moved by the wick,

connections establishedv between the prime mover and said member through the initial movement of the member whereby the member is moved away from the wick by the prime mover, and mechanism actuated by the movement of saidmember for temporarily rendering inoperative the connectionsbetween the prime mover and wick.

6. in a burner ofthe character set forth, the combination with a prime mover, wick raising means, separable connections between the prime vmover and said means, a member adapted to be engaged and moved by the wick when the wick is elevated, 0perative connections adapted to be established between said member and the prime lee) mover when the member is initially moved by the wick whereby said member may be elevated out of contact with the wick by the prime mover, mechanism actuated when the aLto-resaid connections are made and during the elevation of said member for temporarily disconnecting the wick raising means from the prime mover, and stop means operatively connected to the prime mover through the effecting of the vafore said connections between the member and the prime mover.

7. In a burner ot' the character set forth, the combination of a wick carrier, a rack operatively connected thereto, a `pinion meshing with the rack, a spindle whereon the pinion is loosely mounted, a clutch for establishing driving connection between the spindle and pinion, a member disposed in the path of the wick and adapted to be cngaged and moved thereby when the wick is elevated, a gear secured to the spindle, an element movable with the aforesaid member and having a tooth adapted to be brought into mesh with the gear when the element is moved by the aforesaid member, stop mechanism carried by said element and in` corporating a toothed member having' a limited movement and adapted to be brought into cooperation with the gear when the element is moved by the gear, and operative connection between the element and the aforesaid clutch whereby the clutch is disengaged during a part of the movement ot the element,

8. ln a burner of the character set forth, the combination with a wick carrier, a rack operatively connected thereto, a pinion meshing with the rack, a spindle whereon the pinion is loosely mounted, a clutch through which driving connection is established between the pinion and the spindle, a gear on the spindle ot a radius greater than that of the pinion, amember in the path oi` the wick adaptedto be engaged and moved thereby when the wick isK elerated, an element connected to and movable with said member and having a tooth adapted to be brought into mesh with the :rear when the member is initially elevated )y the wick, mechanism actuated by the element during a part of the latters movement for temporarily disenga ging the laforesaid clutch and thus suspending driving connections between the spindle and the pinion, and stop mechanism acting upon the aforesaid gear for limiting the rotation of the spindle and moved into mesh with said gear when the aforesaid element is elevated.l

9, ln a burner of the character set forth, the combination of a wick carrier, a rack` operatively connected thereto, a spindle, 1i pinion secured to the spindle and into and out of engageinent with which the aforesaid rack is adapted to be moved, means tending to move the rack into engagement with the spindle, a member arranged in the path or the wick and adapted to be engaged and moved thereby when the wick is ele` vated, an element movable with said meinber and having a tooth adapted to be brought into mesh with the teeth of the pinion when the element is initially moved, the pinion thereafter serving to elevate the element and aforesaid member independently oit' the wick, means serving to shifttlie element laterally during its elevation, the element cooperating with the rack in such manner as to temporarily disenga-ge the rack from the pinion while the element is shifted laterally, and stop mechanism thrown into mesh with the pinion by the elevation of the said element and which serves to limit rotation of the pinion in a direction to elevate the wick.

l0. In a burner of the character set forth, the combination of wick raising means, a flame spreader adapted to be engaged and moved by the wick, operative connections,

established by the initiial movement ot the flame spreader, between it and the wick raising means whereby the spreader is lifted by said means out ot contact with the wick and a dwell in the movement ot the wick is effected, and stop mechanism incorporated in said connect-ions that is coupled to the wick raising means through the action ot the connections.

11. In a burner of the character set forth, the combination of wick raising means, a tiame spreader arranged to be engaged and moved by the wick, and operative connections, established by the initial movement oit the flame spreaderv` between it and the wick raising means for effecting a dwell in the movement of the wick, withdrawal of the flame spreader from the wick, and a stopping of the wick raising means.

In testimony whereof, l hereunto aif;

ni si ature.

y gn i LEE S. CHADWICK.

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