US2089882A - Antiflood oil burner attachment - Google Patents

Description

Aug. 10, 1937. (g, E;-DUFO'UR 2,089,882

ANTIFLOOD OIL BURNER ATTACHMENT Filed Feb. 24, 1956 2 Sheets-Sheet l WITNESS ATTORNEY Aug. 10, 1937. c. E. DUFOUR ANTIFLOOD OIL BURNER ATTACHMENT Filed Feb. 24, 1956 2 Sheets-$l1est 3 INVENTOR ATTORN EY WITNESS Patented Aug. 10, 1937 s'r'rss PATENT OFFEQE 3 Claims.

. This invention relates to an attachment for burners and has for the primary object the provision of a device of this character which maybe readily adapted to a fuel control valve of a burner to prevent flooding of the latter with fuel between 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 invention consists in certain novel features of construction, combination and arrangement of parts to be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had to the following description and accompanying drawings, in which Figure 1 is a side elevation illustrating an attachment constructed in accordance with my invention.

Figure 2 is a top plan view illustrating the same.

Figure 3 is an end elevation, partly in section, illustrating the device.

Figure 4 is a view similar to Figure 3 showing the other end of the device.

Figure 5 is a sectional view taken on the line 55 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 1-7 of Figure 1. V

Figure 8 is a fragmentary bottom plan view illustrating a clip for connecting the attachment to the handle of a fuel control valve.

Figure 9 is a detail sectional view showing means of holding one of the Weights of the device in its adjusted position.

Referring in detail to the drawings, the numeral l indicates a fuel control valve for a burner (not 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 invention by means of a bracket 4. Secured to the bracket is a frame 5 having removable walls 6 cooperating with the frame in forming a housing. Rotatably supported by the frame is a valve operating 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 thereto a lever 9 carrying a resilient dog I O adapted 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 hereinafter more fully described.

A disc I4 is secured to the gear 12 and has secured 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 stop i 1 formed on the frame in limiting the rotation 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 finger piece I8. The finger 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 gear l 2 thereby discontinuing the driving connection between the gear l2 and the shaft 7.

The governor mechanism is constructed as follows: A shaft 29 is journaled on the frame 5 and connected to the gear l2 by a gear 2|. An escapement'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 escapement gear 24' journaled on the shaft 28 forms an integral part of the gear 23.

Secured to the escapement shaft is a bar 25 including screw threaded portions 26 on which are threaded weights 27. The screw threaded portions have flattened faces 28 to be engaged by spring members 29 secured to the weights 2'! 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. Ihe weighted bar operates similar to an escapement of a clock mechanism and acts to control the speed of rotation 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 without 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 driving connection between the spring l5 and the shaft 1 and the lever B is turned in one direction opening the valve l and at the same time winding the spring l5. As soon as the lever 9 is manually released, the spring l5 acts to drive the shaft 1 in a direction for closing the valve l. The governor 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 flooding 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 9 is moved into dotted line position and the valve then turned towards an open position to regulate the flame 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 toa closed position, the lever 9 is swung into full line position, 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 said closed position.

Having described the invention, I claim:

1. A device of the character set forth comprising a fixed frame, a shaft journaled on said frame and connected to a fuel control valve, a gear journaled on the shaft, ratchet teeth formed on said gear, a drive spring connected to the frame and to said gear, a governor means connected to said gear and supported by the frame, a control lever pivoted to the shaft and capable of occupying different positions, and a flexible dog secured to the lever to engage the ratchet teeth when said lever is in one of its positions to establish a drive dosa es between said drive spring and the shaft for the closing of the valve.

2. A device of the character set forth comprising a fixed 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 direction, 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 adapted to occupy different positions, a dog carried by the lever to engage the ratchet teeth when said lever occupies one of its positions to connect the gear to the shaft, and means cooperating with the shaft and lever to temporarily secure said lever in any of its positions.

3. A device of the character set forth comprising a fixed 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 direction, 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 adapted to occupy different positions, a dog carried by the lever to engage the ratchet teeth when said lever occupies one of its positions to connect the gear to the shaft, said shaft having a notch, and a spring pressed finger piece pivoted on the lever to engage in the notch of the shaft to temporarily secure said lever in one of its positions.

CHARLES ERNEST DUFOUR.

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