Патент USA US2055356код для вставки
Sept.> 22, 1936. _ F, A, KOMMER 2,055,356 FUEL suPPLY DEVICE Filed Feb. l5, 1933 l 2 Sheets-Shea?l l . ‘ ATTORNEY Sept. 22, 1936. - F_ A_ KOMMER l FUEL SUPPLY DEVICE » Filed Feb. l5, 1933 _ ’ 2,055,356. ` `2 Sheets-Sheet 2 FIGA ATTORNEY 2,055,356 Patented Sept. 22, 1936 UNITED -s'rli'l‘lazs >PA'I‘ENT .OFFICE Z 2,055,350 FUEL SUPPLY DEVICE Fred A. Kommer, St. Louis, Mo., assignor to Carter Carburetor Corporation, St. Louis, Mo., a corporation of Delaware . Application February 15. 1933, Serial No. 656,857 - 12 Claims. (Cl. 137-68) This .invention relates to fuel supply devices for oil burners and the like and more partic ularly to the provision of a combination con stant level chamber, fuel control and safety de vice for house heating oil burners. In devices of this kind it is customary to store Figure 8'is a detailed view of parts of the trip mechanism. ~ Figure 9 is a detailed view similar to Figure 8 but showing the parts yin a diiferent operating position 'the section being taken through a ldif- 5 ferent part of the tapered screw. l Referring to lthe drawings the reference nu meral I indicates a main body casting having a boss 2 thereon thru which extends a vertical opening 3. The body member is mounted on a Vlil 10 tomary to provide a float controlled mechanism , supporting rod or pedestal l and firmly held in at some point in the fuel line for maintaining a constant level in a secondary supply cham- adjusted position by means of the set screw 5. ber from which the fuel is then, delivered to the The vpedestal 4 is mounted on any suitable device burner. In case of leakage from the burner or such as the base 6 indicated in Figure 1. '_I‘he body member is provided with a fuel re- l5 from the constant level chamber it is customary ceivlng inlet port 'I which is preferably provided to provide a drip bucket to receive possible leak age and to connect the drip bucket with a valve withA a screw thread as indicated. It will be un in the fuel line in such a manner that ii' the derstood that fuel is supplied to this opening bucket becomes filled with fuel which has leaked _thru any suitable conduit means from the main storage tank which is mounted at a higher level 20 20 from the burner or constant level chamber, the than the body member I. A suitable strainer de valve will be closed and further supply of. fuel vice 8 is held in position in the opening 1 by from the fuel tank will be stopped. l . the bushing 9 which forms the end of the con In view of the fact that the safety valve mus be operated'by a predetermined increase in the ' duit leading from the main storage tank to the 25 device shown- inFigure l. 25 weight of the drip bucket, it is desirable to have After passing thru the strainer 8 the fuel the least possible friction in the valve operating the oil in an elevated tank and to deliver it by gravity to the oil burner. In order to control the rate of fuel supply to the burner it is cus l mechanism and particularly with regard to the friction between .the stem of the valve and any packing. According to my invention I eliminate the packing altogether and use a_ double faced 30 valve instead. 'I‘he object of this invention is to provide a generally new and improved device of the above character. 'I'he invention will be better under 35 stood from the following description and ac» companying drawings referring to which: „ Figure 1 is a sectional elevation of a device con structed according to my invention. Figure 2 is a plan view of the device shown in 40 Figure 1. ‘ Figure 3 is an end view of the. device shown flows upwardly thru the valve seat member I0, y thru cross passage Il and down the vertical passage I2 to the needle valve seat member I3.V A needle I4 controlled by the iloat I5 pivoted at 30 I1 is provided for the purpose of maintaining a substantially constant l'evel of fuel in the ñoat bowl or fuel container I6. The main body memberV is provided with a downward extension I8 of substantially L-shaped 35 formation as indicated in Figure 1. In the lower part of this extension is provided an out let fuel passageway 20 which is screw-threaded at 2i to receive the bushing nut 22. In the form of device shown in the drawings two of these out- 40 lets are provided. The bushing nuts 22 serve to ' draw the bowl up tightly against the body mem in Figure 1. ber I, the contact between the bowl and body Figure 4 is an end view similar. to Figure 3 member being'sealed by gaskets 23 and 24 as except that parts are broken away and others indicated. The bushing nuts 22 `have outlets 25 45 .45 shown in sections. which are screw-threaded for connection of the Figure 5 is a detailed view showing part of the ’ pipe line which leads to the fuel burners. trip mechanism. A suitable control valve 26, screw-threaded Figure 6 is another detailed view showing parl',- into the casting I and provided with a'combined of the ` trip mechanism. The view is taken indicator and operating handle 21 is used to con- 50 50 along line 6-6 of Figure 1 looking in the di rtrol the inlet opening to each one of the outlet rection of the arrows. passages 20. Figure 7 is a fragmentary sectional view taken along the line 1-1 of Figure 2 looking in the di coverplate. above the top of the casting and held in position by the spring 29 which also holds the valve in adjusted position. 'I'he constant level 55 rection of the arrows, ` A dial plate 28 is mounted on tlie , 2,055,856 chamber I5 is vented at 35 to the atmosphere at a point substantially above the normal constant level A--A. In case the iioat valve I4 should leak, the constant level chamber would illl up and leak thru the vent 38. In order to shut oil the ilow of fuel to the con stant level chamber in case of such leakage. a conduit 3| is provided* to convey any fuel leaking ‘ from the vent 38 into a trip bucket 32. The trip bucket is provided- with a perforated cover 33, crimped in position by means of the annular cor rugations 34 in the bucket wall. 'I'he perfora tions in the cover 33 'are indicated at 33a, and these are for the purpose of' admitting fuel to the lower part of the bucket, the cover serving to permit the escape of air and to keep any inci~ ~dental trash from dropping to the bottom of the bucket and being immersed in the oil. ' It should be noted that the trip bucket 32 is 20 not necessarily placed at the level indicated in Figure 1, but may be substantially lower so that leakage from the fuel burner may be conveyed by gravity to this bucket, the same as leakage from the constant level chamber is conveyed to it. ,25 It will be understood that in certain installations it may be desired to shut oil’ the ilow of the fuel from the main tank in case of serious leakage from the burner as well asin case of leakage from 30 the constant level chamber. e The main casting is provided with an upwardly extending bracket 35 to which a rocker arm 36 is pivotally connected as at 31. The bucket sup porting arm 38 is also pivoted to the bracket 35 35 as indicated at 39. Arm 38 has a cam surface 48 (Figs. 5, 8 and 9) which underlies and con tacts with a bridge 4|, formed on the rocker arm 3E. 'I'he relation of the cam surface 40 to the pivot .39 is such that when the arm 38 is in its uppermost position, as indicated in solid lines in 40 Figure 1, the cam has not reached the upper dead center of its movement in the counter-clock wise direction and, therefore, downward or clock wise movement of the arm 38 may be resisted by a downward pressure on the bridge 4|.I This 45 pressure is supplied by means of the spring 42 which is held in position between a retainer 43 and a. second bridge 44 on the lever 36. The re tainer 43 is mounted on the end of the stem of the valve 45 which is adapted, when closed, to shut oiï fuel ñow thru the valve seat I0. The valve 45 is provided with a stem548 and collar 41. A substantial amount of adjustment of the pres Sure at which the valve will be closed is provided ` for by the adjusting screw 48 which is mounted 55 in the bracket 35 and is provided with a tapered portion 49. The tapered portion terminates in a pilot 58, as indicatedvin Figure 6. The lever 38 is provided with a lug or cam 5I, the lower por tion of which contacts with the tapered surface 60 49 and thereby limits the upward or counter . clockwise movement of the lever 38. By adjust ment of screw 48, the linut of counter-clockwise movement of lever 38 can be varied toward or _away from the upper dead center position, which, 65 of course, varies the pressure required to release cam 40 from engagement with bridge 4|, as in _ Fig. 9, and trip the mechanism. The uppermost The end oi' the lever 38 is provided with a hook 54 to receive the bucket supporting link 55. The lower portion of the link 55, comprises the T-shaped member 55 which may be inserted thru a slot 51 in the cover until the narrow neck por tion 58 lies in the circular opening 59 in the center of the cover and then turned 90 degrees with , respect to the cover to move the shoulders 60 out of registry with the slot. In order to further insure against leakage from 10 the device, I preferably cast a downwardly ex tending annular recess 55 in the main body cast ing surrounding the bushing 52 and the valve stem 45.' Fuel leaking past the valve seat 53 will run down into this annular recess from 15 which it is conveyed down into the iloat cham ber thru the substantially vertical passageway 51 as indicated in Figure 2. , In operation the device is mounted at a suit able heisht on the rod 4 to supply oil to the oil 20 burner and the opening 1 is connected to the main fuel supply tank. Each of the openings 25 is connected to a burner which is to be operated. -'I‘he valves 25 are then adjusted to supply the proper amount of fuel to the burners and the arm 38 is lifted to the position shown in Figure 1. The set screw 48 is then screwed inwardly until 25' ' the trip mechanism operates by its own weight Without any oil in the bucket 32. The screw 48 is then turned back approximately one-half a turn and the lever 38 again lifted. This opens the valve 45 and permits fuel to ilow in thru the passages 1--|I1--| |-|2-|3 into the iloat bowl I 6. When the level A-A is reached, the float valve |4 is closed automatically.> 35 It will be understood that the bucket 32 is placed at the level shown in Figure 1 only if it is de sired to operate the trip mechanism by leakage from the iioat chamber I5 without regard to the leakage from the burner. If the leakage from the burner is to be used to operate the trip mech anism the bucket 32 will be placed at a some what lower level than that shown in Figure 1 and a conduit provided to convey leakage from the burner by gravity to the bucket. As long as the burner is in operation with the lever 38 in the position shown in Figure 1, the upper end of the valve member 45 is held against the valve seat member 52 and the contact is sealed by the gasket 53. The primary force 50 which holds the valve in this position is the weight of the bucket which tends to push upwardly on the bridge member 4 I, raising lever 35 and press ing against spring 42 which in turn lifts the valve and holds it in position against gasket 53. 55 Whenever a substantial amount of oil collects in the bucket either by reason of leakage from ‘the constant level chamber or from the burner so as to increase the weight of the bucket aïpre determined extent, the upward pressure on the 60 bridge 4| becomes so great as to compress lthe spring 42 and allow cam 40 to slip from under the bridge 4I. The lever 38 then drops to the position indicated by the dotted lines in Figure 65 1 with the lug 65 of lever 38 resting on bridge 44 which, in turn, strikes the collar 41 on the valve position of the valve 45 is determined by a com- ^ 45, forciblyclosing the valve against the lower bination bushing and valve seat member 52 which 70 is screw threaded into the main body member. ‘The member 52 is provided with a bore which loosely receives the stem 45 of the shutoi! valve . and the lower end of this bore is formed as a valve seat which may, if desired, be provided with 75 a suitable seating gasket 53. valve seat I 0. This, of course, moves the valve 45 away from the gasket 53, but with the valve closed against the lower seat l0, the possibility 70 of leakage at 53 is of no importance. Dropping of valve 45 completely shuts oft the iiow oi oil from the main tank to the constant level chamber and burner and keeps it shut ofi' until 75 2,055,351: , 3 the trouble is located and the trip mechanism is and yieldably holding said valve against said bushing, a trip bucket mechanism contacting reset by the operator; The invention is not hunted in details' _to the ‘ with said lever and normally holding it insaid structure shown but may be modified in various position, and means operated upon a -predeter respects as will occur -to those skilled in the art mined increase in the weight of said trip bucket and the exclusive use of _ al1 such modifications mechanism for moving said valve'to its opposite that come within the scope of the appended position and holding it there. 6. In a safety device, a mainbody member hav claims is contemplated. » ing a passageway therethrough, a valve extending I claim: ' 10 1. A device of the class described comprising into said passageway and adapted 'to control the same, a pivoted arm mounted on said body mem a main body member, a downwardly extending projection on said main body member, a sub ber. a drainage bucket carried /by said pivoted arm, a second arm pivoted'to said body member, said second arm being adapted to move said valve said extension, means for attaching said con tainerfvto~~said~ extension, a- fluid passageway to open or closed position, said first arm having formed in said attaching means, a fluid passage-~ a portion engaging‘a portion ofthe second‘arm way in' said body member communicating with and normally operated by the weight’of the trip said container, and a float valve mechanism in bucket-to hold said valve in open position,.said said container for controlling said _inlet passage-` iirst named arm having a second portion adapted 20 to cooperate with another portion of said second way. l stantially cup shaped fuel container surrounding ' 2. A device of the class described comprising a main body member, a downwardly extending projection on said main body member, a substan arm to close the said valve when the normal weight of said trip bucket is exceeded. 7. In a safety device, a body member having a passageway therethrough. a double seated valve for controlling said passageway, a first arm piv oted to said body member and adapted to carry a said container to said extension, an outlet pas sageway formed in said screw-threaded means, drainage bucket, a second arm pivoted to said member and adapted to operate said valve, a control valve mounted on said body member , body for controlling said outlet, an inlet passageway said first arm having a portion for contacting said 30 in said body member leading to said container, second arm to normally hold said valve closed and a float valve mechanism in said container against one of said seats and said first'aïn’having tially cup shaped fuel container surrounding said extension, screw-threaded means'for attaching another portion constructed and arranged to hold for controlling said inlet passageway. said valve against the other of said seats under 3. A safety device of the class described com .Y prising main body structure, a fluid passageway abnormal conditions. 8. In a safety device, a body member having a formed in said structure, a valve seat in said passageway therethrough, a valve for controlling passageway, a valve cooperating with said seat said passageway, a first arm pivoted to said body to control said passageway, said valve having a head andy stem. said stem being of smaller di ‘ member and adapted to carry a drainage bucket ameter than said valve and that portion of said for urging said arm in a certain direction, a sec ond arm pivoted to said body member and adapt valve adjacent said stem forming a seating por ed to operate said valve, said first arm being con tion, said body member being apertured for re structed and arranged when urged in said direc ceiving said valve stem, and trip bucket mecha nism constructed and arranged to hold said valve tion under certain conditions to contact said sec ond arm to normally hold said valve in one po portion against the portion of said body struc sition and when urged in said direction under ture around said aperture so as to seal said different conditions to contact with said second aperture during normal operation, and to oper to hold said valve in another position. ate said valve in the other direction to close said arm 9. In a safety> device, a main body member hav passageway when the weight of said trip bucket ing a fuel passageway therethrough, said fuel and its contents exceeds _a predetermined ' passageway comprising two portions on an angle amount. to each other and a chamber at the junction o'f 4. In a safety device for oil burners, a main said two portions, an opening in a wall of said body member having a passageway therein and chamber co-axial with one portion of said pas a bracket thereon, a double ended valve extend ing into said passageway and adapted to close the same when moved in one direction, a bushing threaded into said body member and loosely surrounding the stem of said valve, the inner end of said bushing terminating in a seat, a lever pivoted to said bracket and yieldably holding said valve against said seat, a second lever pivoted to said bracket for holding said first named lever in position, a trip bucket carried by said second lever, and means whereby a prede termined increase in the weight of said bucket and its contents will remove said valve from said seat and cause it to close said passageway. 5. Ina device of the class described, a body member having a bore, a valve seat member threaded into said bore, a double-faced valve member having one face adapted to cooperate with said seat member and a stem in said bore, a screw threaded bushing 100581? Surmunding said valve stem, the lower end of said bushing being adapted to serve as a seat for the other 75 face of said valve, a lever pivoted to said casting 35 40 45 50 sageway, a valve mounted in said chamber, said valve having a stem loosely mounted in said open- , ing, a gasket surrounding said opening and said stem within said chamber, and means including a drainage bucket for normally holding said valve against said gasket to seal said opening and for ' operating said valve to close said passageway. 60 10. In a device> of the class described, body structure including a fluid passageway having a valve seat therein, a pair of levers pivoted to said structure, valve means cooperable with said valve seat and having a> stem portion extending 65 through an aperture in said body structure, and weighted means applied to one of said levers, the other lever being constructed and arranged to se lectively actuate said valve in directions to seat ' against said valve seat for closing said passage 70 way and against said body structure for sealing said stem-receiving aperture, said weighted lever having portions for engaging the other lever so as to move the same in a direction to cause said valve means to seal said aperture during a portion 75 4 9,055,350 of the movement of said weighted lever in one A direction andato close said passageway during an other portion of the movement of said weighted .lever ln said direction. 11. A device as specified in claim 10 in which said valve-actuating lever includes a pair of abut structure including a iluid .7: e; eway having a valve seat therein, a pair of levers plvoted to said structure, valve Ymeans cooperable with said valve seat and having a stem portion extending through an aperture in said body structure, and adjust able means for applying variable- resistance to ments and said weighted lever includes a projec~ v pivoting ofv said weighted lever. the other lever tion constructed and arranged to engage one of being constructed and arranged to selectively ac said abutments during a portion of the movement~ tuate said valve means in directions to seat ot said weighted lever in the referred-to direction against said valve seat for closing said passage and to actuate said lever in a direction to cause said valve means to seal said stem-receiving aper ture, said weighted lever also including a second projection constructed and arranged to engage the other abutment on said valve-actuating lever during another portion oi.' the movement of said weighted lever in said direction to cause said valve means to close said passageway. 12. In a device of the class described, body way and against said body structure for sealing said stem-receiving aperture, said weighted lever having portions for engaging the other lever so as to move the same in a direction to cause said valve means to seal said aperture during a portion l of the movement of said weighted lever and to close said passageway during another portion of the movement of said weighted lever. " FRED A. KOMMER.