US853746A - Acetylene-gas generator. - Google Patents

Description

m4853346. Y PATENTED Mnl/1,1907.

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AGETYL'ENE GAS GENERATOR, Ammon-Ion FFFFFF 0m21.190s.

i RATRNTRD MAY 14, 19o?. P. R; STOVER. AoRTYLRN-R GAS GRNRRATQR.A 'APPLICATION FILED 001227. .1906.

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F. E. STOVER.

, AUBTYLENB 'GAS GENERATOR.

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6281i tame/o PATENTED-MAY 1 4,- 1907.

UmTnD IsTAfi ns PATENT OFFICE.

FRANK E. STOVER, OF CHATTANOOGA, TENNESSEE, ASSIGNOR TO THE G. R. LYNCH MANUFACTURING COMPANY, OF CHATTANOOGA, TENNESSEE,

A CORPORATION OF TENNESSEE.

ACETYLENE-GAS GENERATOR.

Specification of Letters Patent.

Patented May 14, 1907.

Application filed October 27, 1906. Serial No. 340,855.

To (1J/ wil/0711, ir Tita/y concern/.-

Be it known that I, FRANK E. STOVER, a citizen of the UnitedStates, residing at Chattanooga, in the county of Hamilton, State of Tennessee, have invented new and useful lmprovements in Acetylene-Gas Generators, of which the following is a specification.

My invention relates to improvements in acetylene gas generators of that type wherein the carbid is automatically fed into a saturating chamber in small graduated quantities, and has for its obiects certain improvements in the construction of the same as will be hereinafter more specifically pointed out and claimed, reference being had to the accompanying drawings, in which:

Figure 1 is a perspective view of the generator, the parts being shown in operative position for generating gas. Fig. 2 is a central vertical sectional view of the same, on a slightly smaller scale. Fig. 3 is a horizontal sectional view taken on the line 3 3, Fig. 2, the gas bell being removed. Fig. 4 is a vertical elevation of the upper portion of the de-vv vice, the gas bell being removed, and the casing being shown in section. Figs. 5, 6, 6a and 7 are detail views of the operation of the venting lever and the mechanism for feeding the carbid. Fig. 8 is an enlarged detail vertical sectional view of the carbid chamber, taken at a right angle to Fig. 2. Fig. 9 is a detail perspective view of the latch for holding the carbid valve rod against operationI when the carbid chamber cover is removed.

Fig. 10 is a horizontal sectional view taken on the line 10-10, Fig. 2, the sludge agitator handle being shown in full lines. Fig. 11 is a detail sectional view of the purifying and safety blow-off chambers. Fig. 12 is an enlarged top plan view of the cup valve controlling the ingress and venting of gas to and from the gas bell. Fig. 13 is a vertical sectional view of the same.

Similar numerals of reference denote corresponding parts'in the several views.

In the said drawings the reference numeral 1 denotes the outer casing, at the top of which on one side is located a funnel spout 2 for filling the same with water. Said casing is divided into an upper or gas chamber and a lower or generating chamber by a partition 3, formed into a central neck 4L, open at its top for the reception of the removable carbid chamber 5, hereinafter described. At one side said partition 3 is extended into a narrow upwardly projecting chamber 6, best seen in Figs. 2 and 3, into the top of which is tapped a pipe 7, the same projecting upwardly into the gas chamber and being open at top and bottom for the purpose of affording communication between the gas and generating chambers. Encircling said pipe and resting on the chamber 6 is a cup valve 8, the

Vsame extending for some distance above the upper end of pipe 7 and, as shown in detail in Figs.,12 and 13, being extended at one side at its top and formed into a downwardly extending leg 9 provided with diagonallyarranged apertures 10 for the escape of the gas. Surrounding said valve 8 is a casing 11 closed at its bottom, slotted at 12 to receive the leg 9, and having an outer extension 13 surrounding said leg, said extension being open at top and bottom, all for a purpose hereinafter to be described. I v

An annular gas bell or holder 15 is located in the upper or gas chamber, the same resting, when in its lowermost position, on ycleats l16, and being centrally open to accommodate the vertical neck 4 receiving the carbid chamber 5, as shown. Extending around within said bell 15, except where the inlet fr pipe 8 and its parts come, is a horizontal partition 177 the same being for the purpose of .diminishing the air space in said bell.

At one side the space above said partition is tapped by a tube 18 extending almost to the bottomof the bell, whose function is to drain off from said space any water that may leak thereinto, owing to defective manufacture.

The casing 1 has located on one side of the lower or generating chamber a box 419, in which is located a vertical partition 20, open at its bottom, and forming, in conjunction with opening 21 in the casing and a pipe 22 located in said box, open at top and bottom, and tapped through the bottom wall of said pocket, a water-sealed overflow to limit the water level in the lower or generating chamber, as will be readily understood.

Tapped through the side of the casing 1 is the gas delivery pipe 23, the same terminating at its inner end within and near the upper 'end of the gas bell 15 and extending out- IOO through which the gas passes upwardly and into the service pipe 25. Also tapped through the side of casing 1 and also terminating within and near the upper end of the gas bell 15 is a blow-ott pipe 26, the same being surrounded by a tube 27 depending from the inner surface of the gas bell 15, said tube 27 serving as a water seal therefor under normal conditions. Said blow-oil pipe 26 is connected to the blow-oil main 28 hereinafter to be described.

The carbid chamber 5, which is provided with a cover 29 projecting into the water in the upper chamber between gas bell 15 and central neck 4, thus 'forming a water seal, has its bottom funnelshaped at 30, said funnel terminating into a downwardly projecting tubular extension 31. Mounted on a crossbar 32 fixed in the extreme bottom of carbid chamber 5 is a circular disk 33, upon which normally rests a sleeve valve 34, carrying an agitator 34a, said sleeve valve extending upwardly, when in its lowerinost position, i'ar enough to still encircle the extension 31. A bracket 35 i'ixed to one side of said valve 34 has connected thereto a valve rod 36, which extends upwardly in a4 groove 36a formed in one side of the carbid chamber 5, and terminates in an eye or loop 37 at its upper end that projects horizontally through a vertical slot 38 in the central neck 4.. Pivoted to normally swing out of the slot 38 is a latch 39 that in its free position has its bottom 40 overlying the eye or looio 37, so as to prevent upward movement of the latter, but which, when contacted with by the carbid chamber cover 29, is forced inward on its pivot to the position shown in dotted lines in Fig. 8, which carries its bottom out of the path of travel oi' said eye or loop 37, thereby permitting the valve rod 36 to be operated. A shield 41 iixed within the upper end of carbid chamber 5 aords a space tree from the carbid within which said latch 39 may swing. On the carbid chamber 5 above the latch 39 is formed a projecting lug 42, filling transversely the space in slot 38, while one side of said slot 38 opposite to the eye or loop 37 is out-turned at 43, for a purpose hereinafter to be described. The eye or loop 37 of valve rod 36 is normally engaged by the bent upper end of a rod 44 that extends downwardly outside the neck 4, and is at its lower end connected with a lever 45 pivoted intermediate its length upon lugs 46 rising from the partition 3. In order to provide a wide pivotal bearing for said lever, the same is composed of two bent arms bolted together, shown in detail in Fig. 3, whereby lateral movement of the same is e'liieetually prevented. Connected to the other end of lever 45 is an operating rod 47 that extends above the outer casing 1, and near its upper end is bent or formed into a notch having a horizontal bottom portion 48 and an inclined extension 49 thereof, said. rod being also formed at its upper end into a hook 5t). A lug 5l projecting Afrom the sido ol" the gas bell 5 is adapted to engage said notch or ,hook in a. manner hereinafter to be described.

Mounted on the upper edge olI easing l in proximity to the operating rod 47 is a U- shaped bracket 52 having pivoted therein at 53 a depending hook 5-1-,astnp-pin 55 serving to limit the movement of said hook in one direction. Also pivoted at 56 to the side oll casing 1 is abell-crank lever 57, thesame having its horizontal arm counterweighted at. 58 tonormally'retain it in the position shown in Fig. l. rl`he vertical arm ot said lever 57 is bent horizontally at 571l to projeet over the upper edge of the casing l, and is then extended vertically again, said vertieal portion being inclined or cam-shajwd at 59. An aperture is provided in the horizontal portion 57 of said lever, through whieh l'reely passes the rod 47, said lever thus operating to carry with it the rod 47 when moved on its pivot 56. The blow-oilI main 28 extends downwardly on the outside el" easing l, and at its lower end istapped into box 19, whieh latter freely communicates with the interior oi the generator chamber, through opening 28u as seen in Fig. 4. A vent valve (it) in said vent main 28 is controlled by a lever 6l ha ving a projecting inner end 62, adaj'ited, when` saidlever is turned to the horizontal position, to contact with a lug 63 on the horizontal arm oi bell-erank lever 57. thus tilting the vertical arm thereo'l to the le'l't beneath bracket 52. 'lhe vent main 28 is bram-hed above the vent valve 6() and one braneh extendsdownwardly to where it is connected at. 64 with vent pipe 26, and is also eonneeted with a vent pipe 65 communieating with the interior ol a vent chamber 66, shown in det ail in Fig. ll. Said vent ehamber eomimmicates with purifying chamber 2-1- through pipe 67, which projects downward therein for about six inches below the water level therein. Also passing through the bottom of said vent chamber is a lilling pipe 68, the same extending upwardly therein to the desired water level, and outside said ehamber also extending upwardly, as shown, and enlarged at its open end into a illing l'unnel.

Projecting trom the top o'l` l'unnel spout 2 is one end ol' an operating rod 69 l'er the eup valve 8, the same extendingl'reely into the gas chamber, beneath gas bell l5 and thenee upward into the leg 9 olI eup valve 8, l'or a. purpose hereinafter deseribed.

Projecting through the vent section olI box 19 is a pipe 70, the same being elosed at its top, which closure terms a pivot. lor an operating rod 71 provided with a handle 72. Said rod extends downwardly in said pipe and from thence herizontally in the generating chamber, and at its inner end is turned down to loosely engage between the parallel arms 74- of a sludge agitator. Said arms are spaced apart and bolted at their ends to an agitating bar 75, bent at its middle to fit the configuration of the bottom of the generating cham ber (best seen in Figs. 2 and 10), said generator bottom being concaved toward its center, and being provided on one side with a' narrow trough 76, at the outer end of which is located the sludge valve 77. Said bar 75 is pivoted at its center on bolt 78, which extends upwardly and passes through a filling or spacing block 79 located between the arms 74.

The sludge valve 77 is provided with an operating lever S0, to which is pivotally connected the lower end of a rod 31 that extends upwardly and is bent at its upper end to partially encircle the stem of the vent valve between the same and its operating lever 61. Fixed to the side of said lever 61. is a plate 32 having a projecting lug 83 which, when said lever is turned up to the position shown in Fig. 1, engages over the bent upper end of rod S1 and prevents upward movement thereof, but which, when said lever is turned down to a horizontal position, permits a free upward movement to said rod 31, the latter, when moved upward, on the other hand, locking said lever in its horizontal position.

From the above description the operation of my im roved construction will be understood as ollows: With the lever 61 turned up in the position shown in Fig. 1, in which position the vent valve 60 is closed, and with the gas bell 15 empty, the latter will rest on the lugs 16 in its lowermost position., thus bringing the lug 51 on said gas bell below the notch in the rod 47, said rod bei:` g constantly forced to the right against lug 51 by the upper end of lever 57. Now, by reciprocating rod 47 vertically by hand a feedof carbid is effected, as hereinafter described, and the gas bell as it 'fills with the gas so generated will rise until the lug 51 thereon engages in the notch in rod 47, whereupon the feed will become automatic, as hereinafter described. As will be seen from Figs. 2 and 4, a vertical movement of rod 47 will, through lever 45 and rods 44 and 36, impart a corresponding movement to the valve 34. Referring more particularly to Figs. 2 aid S, the operation of the feed of the carbid will be readily understood, for, as the rod 36 is lifted, the cupshaped valve 34 will be correspondingly lifted from the disk 33, which normally closes its lower end, thus effecting an instantaneous feed of carbid annularly around the edge of said disk, the agitator 34a in the upward movement of the valve 34 eifectually preventing any clogging of the carbid in eXtension 31. Normally the valve 34 is in its lowermost position, from which it is lifted by the downward movement of lug 51 on gas bell 15, which, by pressing down upon the horizontal portion 48 of the notch in rod 47,

the apparatus.

raises said' valve 34 to effect a feed. Upon the consequent upward movement of the gas bell 15, due to the gas generated Yby said feed, the inclined portion 49 of the notch in rod 47 will usually offer sufficient resistance to the lug 51 to cause rod 47 to ascend, thus closing valve 34. But, ifthe lug 51 should leave the notch, and the valve 34 should not close downwardly of its own weight, and carbid should continue to be fed, the gas bell 15, by continuing to rise, would finally cause lug 51 to Contact with the hook 50 at the upper end of rod 47 and thereby force valve '34 to the closing position.

When it is desired to remove the carbid chamber 5 from the` apparatus, the same is lifted slightly until the lug 42 thereon clears the slot 38a in the central neck 4, when, by turning said carbid bodily to the left, said lug 42 will engage over the top'edge of the central neck 4 on that side, thus supporting said carbid chamber in its raised position. Now, it will be observed, from Fig. 4, that, when said carbid chamber is in its lower most position, the lug 42, substantially filling the slot 38, prevents any lateral movement of said carbid chamber, and the out-turned edge 43 of the central neck 4 will act as a stop to prevent the disengagement of the upper bent end of rod 44 from the eye or loop 37. But, when said carbid chamber is lifted and turned to the left, as above described, the eye or loop 37 is carri ed a corresponding distance to the left,which will leave Aroom between said eye or loop and the out-turned edge 43 suliicient to disengage rod 44 from said eye or loop, and the carbid chamber 5, together with its valve and attachedparts, may be vremoved from Furthermore, the cover 29 being necessarily removed when this takes lace, the latch 39, by engaging the eye or oop 37, will prevent any possible operation of the valve 34, so that, even should the carbid chamber contain carbid, no feed of the same can result.

Water is supplied to both the upper and lower chambers of the apparatus through funnel spout 2, the same iirst filling the upper chamber to the level of the opeinngs 14 in pipe 11, the surplus passing throughsaid openings and building up therein and in cup valve 8 until it overflows through gas pi e 7 into the lower or generating chamber, wli it will fill to the level of the upper end of overflow pipe 22, which will co'itrol the water level in said chamber, a discharge from said pipe 22 indicating that the apparatus is fully charged withwater.

When it is desired to vent the apparatus to atmosphere, the lever 61 will be brought to the horizontal position, shown in dotted lines in Fig. 2, which will open vent valve 60, thus, through the branch of vent main 23 communicating with the generating chamber, immediately venting said chamber.

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The gas bell 15, however, is unaffected b y this action and may continue to supply gas to the service pipe 25, though, when it is also desired to vent said gas bell, the same may be instantly accomplished by lifting rod 69 which will lift cup vlalve S so that the wall 12 of leg 9 thereof will be raised above the water level, thereby permitting the return of the gas in the gas bell 15 to the generating chamber through pipe 7, and its consequent escape to atmosphere through vent main 28.

The operation of the cup valve S will be apparent, the lower edge of leg 9 thereoic being normally immersed a short distance in the water in the upper chamber, the gas from the generating chamber forcing the water level in leg 9 downward until it can escape through openings 10 and out through extension 13, which latter will prevent splashing.

The movement of the lever 61 to the horizontal or venting position through the engagement of its inner end 62 with the lug 63 on bell-crank lever 57 will lift the horizontal arm of the latter, thereby throwing its vertical arm to the left beneath bracket 52, as

shown in Figs. 6 and 7, the same carrying with it rod 47, which removes the latter from its engagement with lug 51 on gas bell 15. Said rod 47 in falling into bracket 52 will strike the pivoted hook 54 therein, and ii" the notch in said rod is above said hook the latter, by its engagement beneath said notch, will efiectually lock said rod and the valve 34 against movement. It the lever 61 should be turned to the horizontal position while the notch in rod 47 was below the hook 54, the latter, by yielding, would permit said rod to move upward until said hook engaged beneath said notch. Should the carbid chamber become emptied and the gas continue to be used 'from gas bell 15, the latter, by descending and carrying with it the rod 47, would force valve 34 upward against the lower edge of the funnel-shaped bottom 30 of the carbid chamber 5, thus possibly break- -ing said valve or some of the parts. This danger is electually prevented by the incline 59 on the upper end of the vertical arm of bell-crank lever 57, with which the lug 51 willA contact, thus forcing the vertical arm of said lever 57 to the left, the same carrying with it the rod 47 and thus disengaging lug 51 from the notch in said rod and permitting the valve 34 to close downwardly by gravity.

So long as the lever 61 vis in the vertical position, whereby the vent valve `60 is closed, the lug 83 on said lever, by engaging the bent upper end of sludge valve rod 81, will eliectually prevent upward movement of the latter,lthereby locking the sludge valve 77 closed. But` when said lever is turned to the horizontal position, thus venting the generating chamber, the lug 83 will be moved out of the path of the rod S1 and the latter may be raised, thus opening the sludge valve 77 through lever 86. llui, when said rod is raised and said sludge valve is thus opened, the upper straight part ol said rod will interfere with the movement ol" the lever 61 to the vertical position, by reason of the contact with said rod ol the lug S3 on-said lever. ln this manner, when the vent valve 60 is closed, the sludge valve 77 is locked against opening, though said vent valve may be opened when the vent valve is opened, the sludge valve may be opened; and, when said sludge valve is opened, the vent valve cannot be closed.

The operation of the sludge agitator is best seen in Fig. 10, wherein a partial rotation of handle 72 causes its operating rod 7l to assume the position shown in dotted lilies, thus causing a complete half rotation elIv the parallel arms 74, which carry with them` the bent agitating bar 75, the lattei` thus sweeping over the entire bottom area olI the generator and carrying the sludge into the trough 76, Afrom whence it discharged by the water through the sludge valve 77.

The gas inthe bell 15, when desired l'or use, is led through pipe 23 `into the lower end of purifying chamber 24, from whence it passes, through the purifying material, such as cotton, therein up f'ardly and out through service pipe 25. Should the pressure ol gas in 'chamber 24 become excessive, the. same will force down the column of water in pipe 67, thereby permitting the excess pressure to escape into chamber 66, and thence out through vent pipe 65 to the vent main 2S. Any excess of gas pressure in chalnber 66 beyond the capacity of vent pipe 65 to relieve will blow out the water in blow-oil' pipe 66 and escape herethrouglu this construction permitting the blow-oil' olt the water in pipe 6h' only, thus always leaving sullicient water in chamber 66 to seal the lower end oll pipe 67.

that l consider to be an imiiiortant point in my present construction is the location ol' the carbid. valve operating mechanism in th(` upper or gas chamber, instead of in the lower or generating chamber, said mechanism being at the same time water sealed, lior it is well known that, when located in the generating chamber, as heretrsiliorc, said mechanism quickly becomes covered and clogged with the sludge. By my present construction the valve operating n'iechanism, although ell'eetually water sealed, is located entirely within the upper or gas chamber, into which no sludge can penetrate, and thus remains at all times free from obstruction or clogging.

It will be observed that l. have dispensed with a lock for thc carbid chamber cover 2E), the same being found in this construction to be unnecessary, lior, when said cover is in position and the vent valve 66 closed, the atmospheric pressure on top of said cover will ellectually prevent its being lil'ted, though,

carbid chamber.

when said vent valve 60 is opened, and the l generating chamber thereby vented, the pressures on the upper and under sides of cover 29 will be instantly equalized, thereby permitting the ready removal of said cover.

By referring toIiig. 1 it will be observed that the purifying chamber 24 is fixed to the side of the casing 1 in such manner that said casing forms one side or wall of the same, the result being that the gas in its passage through said purifying chamber is still subjected to some extent to the cooling action of the water in the apparatus through the contact of the water with the inside of the casing.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a-generator, the combination with a generating chamber, a gas chamber lying above said generating chamber, a carbid chamber communicating with the generating chamber, and a valve for controlling the feed of carbid from said carbid chamber, of operatinv1 mechanism for said valve leading upward from said valve, thence downward and water sealed in the gas chamber, and thence to the exterior of said as chamber.

2. In a generator, t e combination with a gas chamber, a carbid chamber, and a feed valve in the lower end thereof, of a valve rod therefor leading upwardly therefrom, a rod connected to the upper end of said valve rod and leading downward exterior to said carbid chamber in said gas chamber, a lever pivoted in said gas chamber below the water level thereof and connected at one end-to said rod, and an operating rod connected to the other end of said lever and extending out of said gas chamber.

3. In a generator, a carbid chamber, a cover for said chamber removable independent of the movement of the other parts, a valve controlling the discharge yof carbid from said carbid chamber, and means for automatically locking said valve in its closed position as said cover is removed from said 4. In a generator, a `carbid chamber, a removable cover for said chamber, a feed valve, and means released by the removal of said cover for automatically locking said valve in its closed position.

5. In a generator, a carbid chamber, a .removable cover for said chamber, a valvecontrolling the discharge of carbid from said carbid chamber, operating mechanism for said valve extending upwardly within said carbid chamber, and a latch pivoted in said carbid chamber for engaging said valve operating mechanism to retain said valve closed, said latch being forced out of its engaging position by the carbid chamber cover whenthe latter is placed in position on said carbid. chamber.

6. In a generator, a removable carbid chamber, a valve removable with said carbid chamber forcontrolling the discharge of carbid from said carbid chamber, a valve rod extending upwardly from said valve, and

connections exterior to said carbid chamber for operating said rod and valve, said connections being detachably connected with said valve rod, but being locked against detachment by the location of said carbid chamber in its operative position in said generator.

7. In a generator, a generating chamber, a neck leading into said generating chamber and slotted at its up er end at one side, a carbid chamber removab y fitting within and supported by said neck, a lug on said carbid chamber adapted to fit within saidvslot in said neck and to prevent lateral movement of said carbid chamber in said neck when the 4former is in its lowermost position, and also adapted, when said carbid chamber is raised slightly 'and rotated to one side, to support said carbid chamber in said raised position, a valve lfor said carbid chamber, a valve rod extending upwardly therefrom and projected through the slot in the neck, operative connections detachably engaged with the projecting upper end of said valve rod, and a stop on said neck adapted to retain said valve rod and its connections in engagement except when said carbid chamber is lifted and supported by said lug.

8, In a generator, a carbid chamber, a feed valve therefor, a valve rod extending upwardly therefrom outside of said carbid chamber, and a groove in said chamber within which said valve rod extends.

9. In a generator, acarbid chamber, a cover therefor, a valve therefor, a valve rod extending upwardly therefrom within said cover, a latch for engaging said valve rod when said cover is removed, and a shield for said latch within the carbid chamber.

10. In a generator, a carbid chamber, a contracted tubular discharge for the same, a disk fixed in said chamber a little below said tubular discharge, a sleeve valve encircling and movable vertically on said tubular discharge and, when in closed position, filling the space between the latter and the underlying disk, an extension from said valve to one side, `a valve rod connected to said extension and extending upwardly exterior to said carbid chamber, and operative connections for said valve rod exterior to said carbid chamber.

11. In a generator, a generating chamber, a gas chamber at a higher level than said generating chamber, a gas bell water sealed in said gas chamber, a pipe leading from said generating chamber into said gas bell, and a vertically movable valve for said pipe within said gas bell embodying a down-turned leg normally water sealed, and an upward extension around said leg.

12. In a generator, a generator chamber, a

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gas chamber at a higher level than said generating chamber, a gas bell water sealed in said gas chamber, a pipe leading from said generating chamber into'said gas bell, a vertically movable cup valve for said pipe within said gas bell; n ormall7 water sealed therein, and an operating rod for said valve extending from within the same downwardly in the gas chamber and thence through a to be operated independentlyT oi" the other parts ot the apparatus.

13. In a generator, a vent valve, a lever vfor operating the saine, a tlush out, a rod tor controlling said Hush out having its upper end bent to engage said vent valve lever when said Hush ont is closed, and means on said vent valve lever for retaining said rod against motion While the vent valve is closed.

14. In a generator, a vent valve, a lever for operating the same, a iiush out, a rod tor controlling said iiush out having its upper end bent to'engage said vent valve lever when said lush out is closed, and means on said vent valve lever co-operating with said rod for retaining said rod against motion while the vent valve is closed and for retaining said vent valve open while said 'flush out is open.

15. In a generator, a vent valve, a lever for operating the same, a iush out, a rod tor controlling said flush out having its upper end leent to engage said vent valve lever when said 'Hush out is closed. and a lug on said vent valve lever co-operating with said rod tor retaining said rod against motion while the vent valve is closed and for retaining said vent valve open while said tlush out is open.

16. In a generator, a gas bell, a carbid chamber, a valve for controlling the feed from said chamber, mechanism for operating said valve through the movement-ot said gas bell, means for throwing said valve operating mechanism out ot operative relation with respect to said gas bell, and means .tor locking said mechanism against a Jfeeding movement when so thrown out of operative relation.

17. In a generator, a carbid chamber, a valve controlling the feed from the same, an

operating rod for said valve, a gas bell, a lug on said gas bell for operating said rod, means vfor controlling the position of said rod with respect to said lug, and means for locking said rod. against feeding movement when disengaged Yfrom said lug.

18. In a generator, a carbid chamber, a valve controlling the feed from the same, an operating rod tor said valve having a shoulder thereon, a gas bell, a lug on said gas bell for operating said rod, means for controlling the position of 4said rod with respect to said lug., and a hook for engaging the shoulder on said rod when disengaged `from l said lug to retain said rod against l'eoding movement. i

19. In a generator, a carbid chamber, a valve controlling the leed from the same, an operating rod tor said valve having a shoulder thereon, a gas bell, a lug on said gas bell for operating said rod, means l'or controlling the position of said rod with respect to said A lug, anda pivoted hook l'or engaging the water seal to the exterior, said rod adapted shoulder on said rod when disengaged t'rom said lug to retain said rod against l'eeding movement. i

20. In a generator, a carbid chamber, a valve controlling the l'eed t'rom the same, an operating rod tor said valve I'ormed with a notch having a horizontal bottom portion, and an incline above said bottom portion, a gas bell, and a lug on said gas bell tor engaging said notch to depress said rod and to aid in raising the same.

21. In a generator, a carbid chamber, a valve controlling the teed from the same, an operating rod tor said valve having a shoulder thereon, a gas bell, a lug on said gas bell for engaging said shoulder to operate said rod, and means tor automatically disengaging said lug and rod upon an abnormal drop oll said gas bell.

22. In a generator, a carbid chamber, a valve controlling the teed l'rom the same an operating rod for said valve having a shoulder thereon, a gas bell, a lug on said g: s bell 'tor engaging said shoulder to operate said rod, a pivoted lever loosel v engaging said rod to control its position laterall}v and having an inclined upper end lving in the path of movement ot said lug with which the latter contacts on an abnormal downward movement ot the gas bell, whereb)Y said lever and operating rod are moved laterall \v to dise engage said rod and lug.

23. In a generator, a carbid chamber, a valve controlling the teed trom the same, an operating rod tor said valve, a gas bell, a lug on said gas bell Vtor engaging said rod to operate the same, a vent falve, a lever operating said vent valve, and a bell-crank lever looselyv engaging said operating rod at its upper end and normalhv lorcing said rod into operative relation with said gas bell lug, said vent valve lever, when turned to ventV the apparatus, engaging and tilting said hellcrank lever so as to carry said valve operating rod away from its engagement with the gas bell lug.

In testimony whereof, I have hereunto set mv hand in the presence ot two subscribing witnesses.

FRANK lil. {ItlYlClt Titnesses I D. Il. lAiNs, ANDREW M. (.Lintvrniciis.

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