Патент USA US2089882код для вставки
Aug. 10, 1937. ' (g, E;-DUFO'UR 2,089,882 ANTIFLOOD OIL BURNER ATTACHMENT Filed Feb. 24, 1956 WITNESS 2 Sheets-Sheet l ATTORNEY Aug. 10, 1937. 2,089,882 c. E. DUFOUR ANTIFLOOD OIL BURNER ATTACHMENT Filed Feb. 24, 1956 = =m . 2 Sheets~$l1est ‘3 .w, INVENTOR ’ WITNESS WW8 ATTORN EY Patented Aug. 10, 1937 2,089,882 s'r'rss PATENT OFFEQE 2,089,882 ANTIFLOOD OIL BURNER ATTACHMENT Charles Ernest Dufour, Wentworth, N. H. Application February 24, 1936, Serial No. 65,483 3 Claims. . . This invention relates to an attachment for burners and has for the primary object the pro vision of a device of this character which maybe readily adapted to a fuel control valve of a burner to prevent ?ooding of the latter with fuel be tween the time the control valve is opened and the timefof igniting the burner and also acts as a safety means to assure closing of the control fuel valve when the burner isextinguished. , With these and other objects in view, this in vention consists in certain novel features of con struction, combination and arrangement of parts to be hereinafter more fully described and claimed. For a complete understanding of my invention, 15 reference is to be had to the following description and accompanying drawings, in which Figure 1 is a side elevation illustrating an at tachment constructed in accordance with my in vention. Figure‘ 2 is a top plan view illustrating the 20 same. Figure 3 is an end elevation, partly in section, illustrating the device. Figure 4 is a view similar to Figure 3 showing 25 the other end of the device. Figure 5 is a sectional view taken on the line 5—5 of Figure 1. Figure 6 is a sectional view taken on the line B—@ of Figure 1. Figure 7 is a sectional View taken on the line 30 1-7 of Figure 1. V Figure 8 is a fragmentary bottom plan view il lustrating a clip for connecting the attachment to the handle of a fuel control valve. 35 Figure 9 is a detail sectional view showing means of holding one of the Weights of the de vice in its adjusted position. Referring in detail to the drawings, the numeral l indicates a fuel control valve for a burner (not 40 shown), the operating handle of the valve being indicated by the character 2 and 3 represents the fuel supply pipe on which is mounted my inven tion by means of a bracket 4. Secured to the bracket is a frame 5 having removable walls 6 45 cooperating with the frame in forming a housing. Rotatably supported by the frame is a valve oper ating shaft ‘i, one end having secured thereto a clip 8 adapted to fit over the handle 2 of the valve I and the opposite end of the shaft has pivoted 50 thereto a lever 9 carrying a resilient dog I O adapt ed to be moved into and out of engagement with ratchet teeth H formed on a gear l2. The gear I2 is journaled on the shaft 1 and connects with a governor mechanism !3 which will be herein 55 after more fully described. (Cl. 161-9) A disc I4 is secured to the gear 12 and has se cured thereto one end of a coil spring 15, the other end of the spring being secured to the frame 5. The shaft l’ extends through the spring. An ear i5 is formed on the disc l4 and cooperates with a 5 stop i 1 formed on the frame in limiting the rota tion of the disc by the action of the coil spring. The end of the shaft to which the lever 9 is pivoted is provided with a notch i ‘l’ to receive one end of a spring pressed pivotally mounted ?nger piece 10 I8. The ?nger piece is pivoted to the lever 9 and is employed for temporarily securing the lever 9 in its full line position, as shown in Figure 1, and when said lever is in the dotted line position the dog E6 is disengaged from the ratchet teeth of the 15 gear l 2 thereby discontinuing the driving connec tion between the gear l2 and the shaft 7. The governor mechanism is constructed as fol lows: A shaft 29 is journaled on the frame 5 and connected to the gear l2 by a gear 2|. An escape ment'shaft 22 is journaled on the frame 5 and is connected to the shaft 26 by a train of gears 23 consisting of a ratchet gear 24 secured on the shaft 20 and engaged by a spring pressed dog 20' pivoted on the gear 2 I’. The gear 2|’ is journaled on the shraft 20 and meshes with a double gear 22' journaled on the shaft 22 and which meshes with a gear 23’ journaled on the shaft 20. An escape ment gear 24' journaled on the shaft 28 forms an integral part of the gear 23’. Secured to the escapement shaft is a bar 25 in cluding screw threaded portions 26 on which are threaded weights 27. The screw threaded por tions have flattened faces 28 to be engaged by spring members 29 secured to the weights 2'! 30 whereby said weights will be held against turning on the screw threaded portions accidentally. An escapement pawl 38 is secured to the bar 25 and coacts with the escapement gear 24’ forming a part of the train of gears 23. rI’he weighted bar operates similar to an escapement of a clock mechanism and acts to control the speed of rota tion of the shaft 1 by the unwinding of the spring l5. The purpose of the ratchet gear 24 and the dog 20’ is to allow winding of the spring l5 with out operating the escapement bar 25. In operation and to turn on the fuel to the burner (not shown), the lever 9 is positioned as shown in full lines in Figure l to establish a driv ing connection between the spring l5 and the 50 shaft 1 and the lever B is turned in one direction opening the valve l and at the same time wind ing the spring l5. As soon as the lever 9 is manu ally released, the spring l5 acts to drive the shaft 1 in a direction for closing the valve l. The gov dosages 2 ernor mechanism at this time controls the speed of rotation of the shaft 1 so as to bring about a closing of the valve l within a predetermined. time to prevent ?ooding of the burner between such time as. when the fuel is initially turned on to the burner, and the time in which the burner is ignited. After_the igniting of the burner‘ the lever 9v is moved into dotted line position and the valve then turned towards an open position to regulate the ?ame of the burner. At this time the spring l5 has its driving action interrupted to the shaft ‘I, consequently permitting the valve to remain as manually set. The ear [6 moving from one side of the stop I‘! to the other side governs the unwinding of the spring as well as governing the amount the spring is wound. To extinguish the burner, the lever 9 is swung into dotted line position, as shown in Figure 1, and then manually turned to close the valve. After the valve is moved manually to- a closed position, the lever 9 is swung into full line posi tion, as shown in Figure 1, so that the spring l5 may act to urge the valve in the direction of a closed position and thereby retain the valve in 25 said closed position. Having described the invention, I claim: 1. A device of the character set forth compris ing a ?xed frame, a shaft journaled on said frame and connected to a fuel control valve, a gear jour 30 naled on the shaft, ratchet teeth formed on said gear, a drive spring connected to the frame and between said drive spring and the shaft for the closing of the valve. 2. A device of the character set forth compris ing a ?xed frame, a shaft journaled on said frame and connected to a fuel control valve, a gear journaled on said shaft, ratchet teeth formed on said gear, a disc secured to said gear, means for limiting the rotation of the disc in either direc tion, a coil spring having one end secured to the frame and the other end secured to the disc for 10 rotating the gear in one direction, a governor means connected to said gear and supported by the frame, a hand lever pivoted to the shaft and adapted to occupy different positions, a dog car ried by the lever to engage the ratchet teeth when said lever occupies one of its positions to con nect the gear to the shaft, and means cooperat~ ing with the shaft and lever to temporarily se cure said lever‘ in any of its positions. 3. A device of the character set forth compris 20 ing a ?xed frame, a shaft'journaled on said frame and connected to a fuel control valve, a gear journaled on said shaft, ratchet teeth formed on said gear, a disc secured to said gear, means for limiting the rotation of the disc in either direc 25 tion, a coil spring having one end secured to the frame and the other end secured to the disc for rotating the gear in one direction, a governor means connected to said gear and supported by the frame, a hand lever pivoted to the shaft and 30 adapted to occupy different positions, a dog car ried by the lever to engage the ratchet teeth when to said gear, a governor means connected to said said lever occupies one of its positions to connect gear and supported by the frame, a control lever the gear to the shaft, said shaft having a notch, 35 pivoted to the shaft and capable of occupying and a spring pressed ?nger piece pivoted on the lever to engage in the notch of the shaft to tem different positions, and a ?exible dog secured to the lever to engage the ratchet teeth when said lever is in one of its positions to establish a drive porarily secure said lever in one of its positions. CHARLES ERNEST DUFOUR.