US2720211A - Oil flooding protector - Google Patents

Description

Oct. 11, 1955 R. 1.. AKERMAN OIL FLOODING PROTECTOR 2 Sheets-Sheet 1 Filed Oct. 9, 1952 Fig.2

4 Ralph L. Akerman IN VEN TOR.

9 BY @wm WW 3m Oct. 11, 1955 R. AKERMAN OIL FLOODING PROTECTOR Filed 001;. 9; l9

2 Sheets-Sheet 2 Fig.3

Fig. 4

R m "0 mm a A L MM m 02 R M United States Patent Ofilice 2,720,211 Patented Oct. 11, 1955 This invention relates to new and useful improvements in oil burning apparatus and the primary object of the present invention is to provide a fuel control means for oil burners that will prevent the over-flooding of burners.

An outstanding feature of this invention is the provision of an oil flooding protector including a valve actuator for the fuel supply that is operatively connected to a wick mounted under the burners so that oil dropping from the burners will be caught and ignitedon the wick to activate the valve actuator.

Another important object of the present invention is to provide a safety attachment for oil burners that will regulate and/or control the flow of fuel to the burners and which is responsive to temperature conditions within a burner chamber for its proper function.

A further object of the present invention is to provide asmall and compact valve unit and actuator for the flow lines of oil burners and involving a diaphragm actuated plunger that will operate a valve to restrict the flow of fuel to the burners.

A still further aim of the present invention is to provide a fuel controlling device for oil burners that is extremely simple and practical in construction, efficient and durable in operation, inexpensive to manufacture, service and maintain, and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, in which:

Figure l is an elevational view of an oil burning apparatus, showing the present invention operatively connected thereto, and with parts of the burner chamber broken away for the convenience of explanation;

Figure 2 is an enlarged horizontal sectional view taken substantially on the plane of section line 22 of Figure 1;

Figure 3 is a longitudinal vertical sectional view taken substantially on the plane of section line 3--3 of Figure 2;

Figure 4 is a transverse vertical sectional view taken substantially on the plane of section line 44 of Figure 2; and,

Figure 5 is a vertical sectional view taken substantially on the plane of section line 5-5 of Figure 3, in slightly reduced scale.

Referring now to the drawings in detail, wherein for the purpose of illustration, there is disclosed a preferred embodiment of the present invention, the numeral represents an oil burning apparatus including twin burners 12 that are mounted upon a support 14 within a burner y to the burners in response to temperature conditions within the burner chamber 16.

T o accomplish the desired results, there is provided a valve housing 24 in the form of a T-fitting: the registering openings of which receivably engage pipe sections 26 and 28 that form sections of the supply conduit 20. The other opening in the housing 24 receivable engages an upstanding externally threaded guide and support sleeve 30 that slidably receives the stem 32 of a slide valve (not shown) that is spring urged upward to an open position.

A nut 34 is rotatable on the sleeve 30 and fixedly supports a horizontally swingable arm 36 that inclines upwardly from the sleeve 30. The free end 38 of the arm 36 is bifurcated to receive the end 40 of a relatively long vertically swingable lever 42. A horizontal pivot pin 44 9 extends through the ends 38 and 40 to pivotally attach the lever to the arm.

A casing, having a removable upper wall, encloses the valve housing 24, arm 26 and most of the lever 42. The end walls 48 and 50 of the casing 46 are formed with registering openings accommodating the pipe sections 26 and 28. The collars 52 and 54, suitably secured to the end walls 48 and 50, are held on the sections 26 and 28 by set screws to maintain the casing upon the pipe sections.

An angle member or supporting plate 56 is secured to one end of the casing 46 by spacers 58 and fasteners 60. The horizontal flange of the supporting plate 56 is apertured to accommodate the sleeve 30. A diaphragm case 62 is removably supported upon the plate 56 in registry with an opening 64 in the plate. The diaphragm within case 62 is centrally fixed to a sliding plunger 66 that will move through opening 64 to engage lever 42 in a manner presently to be described.

Plate 56 fixedly supports a horizontally disposed ledge or seat forming element 68 upon which the free end portion of lever 42 rests to support the lever over the reduced upper end of valve stem 32 and in the path of movement of plunger 66. The free end of lever 42 also extends through an inclined slot 70 in end wall 50 to guide the lever 42 as the same is lowered to its valve actuating position.

Diaphragm case 62 is connected to a thermo-responsive member 72 by a capillary tube 74. Member 72 is supported within the chamber 16 by any suitable means and underlies a shield element 76 also supported within the chamber 16 below and between the burners 12.

In practical use of the present invention, and assuming the valve V in the supply conduit 20 to be on, fuel from the tank 18 will pass through the conduit 20 including the sections 26, 28 and to the burners 12. Should a larger supply of fuel from the tank 18 pass through the burners 12 than is necessary for the burners to function properly, oil will flood over the burners and onto a wick W supported under the burners and be ignited to radiate heat to capillary tube 72 and cause the diaphragm in case 62 to fiex and move plunger 66 against the lever 42. As the plunger 66 is moved against the lever 42, the lever will be released from the ledge forming elements 68 since the arm 36 is pivoted or rotatable upon 30.

After the lever 42 is moved from the ledge element 68, it will swing downwardly to the dotted line position shown in Figure 3 to depress the stem 32 and close the valve within housing 24. The lever may be raised to its normal position, shown in Figure 3, by user grasping the exposed free end of the lever 42.

In view of the foregoing description taken in conjunction with the accompanying drawings it is believed that a clear understanding of the device will be quite apparent to those skilled in this art. A more detailed description is accordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shown and described a preferred embodiment of the invention the same is susceptible to certain changes fully comprehended by the spirit of the invention as herein described and the scope of the appended claims.

Having described the' invention, what is claimed as new is: 1. A flow control device for oil burners, said device comprising a supply pipe having a valve housing interposed therein, a slide valve in the housing and including a stern projecting upwardly from the housing, a swingabl'e arm on thehousing, an actuating lever pivoted to the arm and extending over the stern, means engaging and releasably supporting the lever spaced abovethe stem, and means responsive to heat and engageable with the lever to move the latter but of engagement with the lever supporting means, whereby the lever will engage the stem to' force the valve to its closed position.

2. A now control device for oil burners, said device comprising a supply pipe having a valve housing interposed therein, a slide valve in the housing and including a stem projecting upwardly from the housing, a horizontally swin gable arm on the housing, a vertically swingable lever p'ivote'd at one end to the arm and extending over the stern, a casing enclosing the housing and a portion of the pipe, means within the casing engaging and releasabl y retaining the lever spaced above the stem, and means including a diaphragm actuated plunger for engaging" the lever to move the latter out of engagement with the retaining means.

3 A flo'w control device for oil burners, said device comprising a supply pipe having a valve housing interposed therein, a slide valve in the housing and including a stem projecting upwardly from the housing, a horizontally sWin'g'able arm on the housing, a vertically and horizontally swingable lever pivoted at one end to the arm and extending over the stem, a casing enclosing the housing and a portion of the pipe, a ledge-forming element within the casing and engaged by said lever, a diaphragnr supported within the casing, a plunger attached to the diaphragm and engageable with the lever for pivoting the arm and lever about a vertical axis to move the latte'r off the ledge-forming element, and thermo-responsive means operatively connected to the diaphragm for actuating thetlatter. V

4'. A flow control device for oil burners, said device comprising a supply pipe having a valve housing interposed therein, a slide valve in the housing and including a stern projecting upwardly from the housing, a horizonable lever pivoted at one end to the arm and extending over the stem, a casing enclosing the housing and a portion of the pipe, a ledge-forming element within the casing and engaged by said lever, a diaphragm supported within the casing, a plunger attached to the diaphragm and engageable with the lever to move the latter off the ledge-forming element, and thermo-responsive means operatively connected to the diaphragm for actuating the latter, said casing having an end Wall with. a slot therein receiving the end of said lever remote from said arm to guide the lever is the latter is moved on the ledge-ferming element.

5. A flow control device for oil burners, said device comprising a supply pipe having a valve housing interposed therein, a slide valve in the housing and including a stem projecting upwardly from the housing, a horizontally swingable arin on the housing, a vertically and horizontally swingable lever-pivoted at one end to the arm and extending over the stem, a casing enclosing the housing and a portion of the pipe, a ledge-forming element within the casing and engaged by said lever, a diaphragm supported within the casing, a plunger attached to the diaphragm and engageable with the lever for pivoting the arm and lever about a vertical axis to'move the latter oh the ledge-forming element,- and thermo-respon sive means operatively connected to the diaphragm for actuating the latter, a sleeve extending upwardly from the housing through which the stem extends to be guided by the sleeve, and said arm being clamped on said sleeve.

References Cited in the file of this patent UNITED STATES PATENTS 1,0354? Welman on. 21, 1913 1,377,873 Chadick May 10, 1921 1,454,341 Schwartz May 8 1923 1,625,323 Lee Apr. 19, 1927 1,648,652 Shadr ick N'ov. 8, 1927 1,688,806 Engel er al Oct. 23, 1928 1,881,367 McKesson Oct. 4, 1932 1,881,807 Maurer oer; 11, 1932 2,379,565 Do'licet July 3, 1945 2,521,469 Marks Sept. 5 1950 2,545,748 Parkinson Mar. 20, 1951

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