US1623160A - Safety valve for oil burners and the like - Google Patents

Description

1,623,160 A nl 5, 1927- B. BUERGER SAFETY VALVE FOR OIL BURNERS AND THE LIKE Filed Sept. 23, 1924 3 Sheets-Sheet l gwpentoz xi, &

1927. Apnl c. B. BUERGER SAFETY .VkLVE FOR OIL BURNERS AND TH E LIKE 3 Sheets-Sheet 2 Filed Sept. 23, 1924 gpnwntot v bw/Pzza. 490/250 April 5 1 927, 1,623,160

0. B. BUERGER SAFETY VALVE FOR OIL BURNBRS AND THE LIKE FilGd Sept. 25, '1924 3 Sheats-$heet5 Patented Apr. 5, 1927.

UNITED STATES PATENT OFFICE.

CHARLES B. BUERGER, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR 1T0 GULF OIL BURNER COMPANY, OF PITTSBUEGH, 'PEIIESYLVANIA, A CORPORATION OF PENN- SYLVANIA.

SAFETY VALVE FOR OIL E'URNERS AND THE LIKE.

Application filed September 23, 1924.

This invention relates to safety valves for oil burners and the like; and it comprises a valve provided with means such as a weighted lever or the like for normally closing it, a support for a receptacle having an extension such as a post or the like arranged to engage the valve closing means to hold the valve in open position; and a receptacle mounted on the support, the support and empty receptacle being balanced so that the valve closing means is held in open position; whereby overflow from a burner or the like directed to said receptacle will cause the valve closing means to function; all as more r fully hereinafter set forth and as claimed.

The invention is particularly useful in combination with valves which control the feed of oil to burners. Among other objects of my invention is the provision of a simple and efficient mechanism of the character described and the provision of safety means whereby, after the valve has been closed by the weight of an accumulation of oil in the overflow receptacle and the latter has been remove-d for emptying from its sup port, the valve cannot again be held open by engagement with said support until the receptacle has been replaced on the latter. In this way I insure against setting of the mechanism unless it is arranged so that overflow of the oil will result in automatic closing of the valve.

In the accompanying drawings showing one form of a specific embodiment of my in-- vention,

Fig; 1 is a perspective View of the mechanism;

Fig. 2 is a top plan view of the same, partly in section;

Fig. 3 is a partial sectional elevation, on line 3-3 of Fig. 2, showing in dotted lines the position of certain parts when the valve is closed;

Fig. 4 is a detail perspective view, on a larger scale, of the valve controlling parts, and

Fig. 5 is a detail elevation of said parts in another position.

The casing 1 is provided with ears 2 whereby it may be attached to the floor. the boiler of the burner, or other convenient place, in position to catch the overflow of oil. through pipe 31 leading from the burner. The casing 1 is open at the right hand end Serial No. 739,368.

preferably integral, bracket .5, to which the burner valve, designated as a whole by 6, is attached by means of the U-bolts 7. The oil passes from said valve to the burner (not shown), through pipe 9, and is supplied to said valve from a source (not shown), through inlet pipe 8. The valve is provided with the usual stem 10 and hand wheel 11, to which the lever 12 is attached by means of bolts and nuts 13. Lever 12 is provided with a weight 1-1, heavy enough to turn the wheel 11 and thus the valve stem 10 and its rotor, whereby the valve is closed when lever 12 is released, as hereinafter described. One end oflever 12 extends through the slot 1 of the casing and is provided at its eX- tremity with horizontal surface 15 and vertical surface 16, for a purpose to be described.

The casing is provided inside with the brackets 17, to which is pivoted at 20 the post 18 of the platform 19, which is provided with a rim 21 for holding the receptacle 22 in position on the platform. The platform post 18 is curved over at the top and terminates in a surface 23, normally.

bearing upon the surface 15 of the lever 12, when the valve is to be held in open position. On the upper portion of the post 18 is the safety locking device, comprising the arm 24, extending through slot 3 of the box or casing, and pivoted at 25 to saidpost'. Said arm 24- has an extension 26 on the other side of its pivot, and said extension carries a projecting pin or screw 27 which normally rests against the end surface 16 of the lever 12. The platform 19 is provided at its lower end with an car 28, to which is attached the coiled spring 29, extending upwardly to the top of the casing 1 and there secured in place by means of eye-bolt 30. The strength of this spring is such that it holds the plat-form in normal horizontal position, but yields when the receptacle 22 becomes filled with overflow oil. The arm 24 rests against the edge of the receptacle and swings downwardly with it and the platform 19, as the receptacle becomes filled and still further down when the receptacle is removed for emptying. hen the parts are in the position shown in Figure 3, the. surface 23 of the platform post 18 rests upon the surface of the lever 12, and the pin 27 of the safety arm 24 rests against the surface 16 of said lever, so that the weight 14 is normally prevented from acting and the valve is held in open position.

The operation is as follows: hen the feed of oil to the burner is too fast for consumption, or when the flame is extinguished, the overflow or unconsumed oil from the burner flows through pipe 31 into the receptacle 22. When the oil has accumulated sufficiently in said receptacle so that its weight overcomes the tension of the spring 29, the platform swings downwardly upon its pivot 20 and the surface 23, of its post 18, slides olf the surface 15 of the lever 12, whereupon the weight 14 is released and closes the valve, shutting off the flow of oil to the burner through pipe 9. The receptacle 22 is then removed, allowing the arm 24 to fall into a position in which its pin 27 rests against the surface 23 of post 18 (see Fig. 5). l/Vhen these parts are in this position the lever 12 cannot be again socured in horizontal position by engagement with the post, and thus the valve cannot be held open. But when the receptacle has been emptied and has been replaced upon the platform 19, the arm 24 is raised into its original position with its pin 27 resting against the surface 16 of-the lever, the surface 15 of which is again engaged by the surface 23 of the post.

The effect of the arrangement of the arm 24 and its pin 27, is to give it a tendency to force the platform 19 downward, and a tendency to force the upper portion of the post 18 away from its engagement with the lever 12. When the receptacle is in place, it supports the weight of the arm 24 and prevents its motion relative to post 18. The weight of the arm 24 must now act around the pivot 20, and it is less effective than when acting around the upper pivot 25, therefore the weight of arm 24 alone does not act to depress the platform 19.

The structure described provides means for the automatic closing of the valve when the receptacle 22 is filled to a predetermined level and in addition, means for preventing the holding of the valve in open position when the receptacle is not in place.

To replace the receptacle after emptying it, the arm 24 is raised to the position shown in Figure 3 in full lines and in Figure 4, and the surface 23 of post 18 is caused to engage the surface 15 of the valve lever 12. The receptacle is then placed in position on the platform with the arm 24 resting against its upper edge, as shown in Figs. 1 and 3.

lVhat I claim is 1. In an automatic valve mechanism, the combination with a weighted lever tending to close the valve, of a yieldingly supported platform for a removable receptacle, said platform having a part adapted to engage the free end of said lever to hold the valve open, and means carried by the platform to prevent the reengagement of said part and lever unless the receptacle is on the platform.

2. In automatic valve mechanism, the combination with a weighted lever tending to close the valve, of a yieldingly supported platform for a removable receptacle, a post on the platform having its upper end adapted to engage over the free end of said lever when the valve and platform are in normal position, and an arm pivoted on said post in position to rest on said receptacle with its other end in engagement with the said end of the lever, when in normal position, and in engagement with the said end of the post, when the receptacle is removed and the valve closed,.whereby reengagen'ient of said lever and post is prevented until the receptacle is replaced on the platform.

In an automatic valve mechanism, the combination with a weighted lever tending to close the valve, of a yieldingly supported pivoted platform adapted to carry a removable receptacle, a post carried by said plat form and by which the latter is pivoted, the upper end of said post being bent over to engage the free end of said lever and hold the valve open when the platform is in normal raised position, and an arm pivoted on said post near its upper end in position to rest on the edge of the receptacle when in place, the end of said arm on the other side of its pivot having a pin which normally bears against the end of said lever but which bears under the said end of the post when the valve is closed and the receptacle is removed, whereby said lever cannot be reengaged with said post until the receptacle is replaced on the platform.

4. The combination with a valve and a lever constantly tending to actuate the same, of means to hold said lever normally inoperative, comprising a pivoted platform having a member engaging the end of said lever, a receptacle removably carried on said platform, and a spring to hold said platform in normal position; and means controlled by said receptacle to prevent the engagement of said lever and member in the absence of said receptacle.

5. The combination with a valve and a lever constantly tending to close the same. of a yieldingly supported platform having a projection engaging said lever to hold the valve open, and means carried by the platform in position to be engaged by a receptacle on the latter and to prevent the engagement of said lever and projection in the absence of said receptacle.

6. In combination with a valve, a weighted lever connected to actuate the same, a pivoted platform for a removable receptacle,

a post on said platform, a spring supporting said platform, the ends of said post and lever being in engagement when the. valve is open and the platform in normal raised position. and a safety arm pivoted on said post and normally engaging the end of said lever, said arm being also supported in normal position by the edge of said receptacle, whereby, when the receptacle becomes filled, the platform swings downwardly, the lever is released and the valve closed, and upon removal of the receptacle, the safety arm swings into engagement with the end of the pos and prevents reengagement of the latter with the end of the lever until the receptacle is replaced on the platform and the arm raised again by its contact with the receptacle.

7. A safety device for oil burners comprising a valve, means normally tending to close said valve, a balanced support normally holding the valve closing means in inoperative position, a receptacle for overflow oil removably carried by said support, and

means connected to the support for permitting the setting of the valve in open position only when the unfilled receptacle is in place upon the support.

8. A safety device for oil burners comprising a valve, means normally tending to close said valve; a receptacle for receiving overflow oil; a pivoted support for said receptacle; means carried by said support for engagement with said valve closing mechanism for pern'iittinp' resetting of the valve in open position only when the unfilled receptacle is in position to receive overflow oil.

9. The combination with valve, of means normally fencing to close said valve; an overflow receptacle; a support therefor normally in engagement with said valve closing means to hold the valve in open position, but disengaged therefrom when the overflow receptacle has been filled a predetermined amount; and means to permit resetting of said valve in open position only when the unfilled receptacle is in place to receive overflow.

10. The combination with a valve, of means normally tending to close said valve; an overflow receptacle; a support therefor normally in engagement with said, valve clos ing means to hold. the valve in open position, but disengaged therefrom when the overflow receptacle has been filled a predetermined. amount, and means associated with said support to permit resetting of said valve in open position only when the unfilled receptacle is in place to receive overflow.

ii. In combination with a valve, a weighted lever normally tending to close said valve, a receptacle for receiving liquid, a support for said receptacle, means cooperating with said support and weighted lever for holding the valve in open position when the bucket is retained by said support and is unfilled, said means being tripped to release said weighted lever when the weight of the receptacle increased by liquid therein, and means preventing the resetting of said weighted lever in initial position until said receptacle has been emptied and replaced in its original position.

12. In combination with a valve, a Weighted lever normally tending to close said valve, a receptacle adapted to receive overflow liquid, means for changing the position of said receptacle when it is filled a predetermined amount with overflow liquid, means associated with said receptacle for normally holding said valve open, and actuated by the change in position of said receptacle for permitting said weighted lever to close the valve, and means preventing resetting of said mechanism until the receptacle has been emptied of its contents and replaced in original position.

13. In combination with a valve, means normally tending to close said valve, an overflow receptacle, means associated with said overflow receptacle and operative when said receptacle is unfilled to maintain said valve operating means in position to hold the valve open, said means permitting closing of the valve by reasonof a change of position of said receptacle when filled with overflow liquid, and means preventing the resetting of said valve in open position until the said receptacle has been emptied and replaced in position. 7

14.. In combination with a valve, a weighted lever normally tending to close said valve. a receptacle adapted to receive overflow liquid,

a support for said receptacle, means movable with said receptacle and support when the receptacle is in position to receive liquid but movable independently of the support when the receptacle is not in position to receive overflow liquid, said means permitting closing of the valve upon movement of the receptacle occasioned by the weight of fluid therein, the said means preventing resetting of the valve in open position until the receptacle has been emptied of its contents and replaced in position to receive further overflow.

15. In combination with a valve, a weighted lever normally tending to close said valve, a receptacle, a pivoted support therefor, sai d support and receptacle being adapted to tilt when the receptacle is filled with liquid to thereby permit the said weighted lever to fall and close the valve, and a lever in contact with said receptacle when it is in position in its support adapted to assume a position when the receptacle is removed therefrom to prevent resetting of the valve until the emptied receptacle is replaced in its support.

1 (ill 16. In combination With a valve, a pivoted lever normally tending to close said valve, a receptacle, a pivoted support for said receptacle adapted to tilt therewith When the receptacle is filled with liquid, a lever pivoted between its ends adapted to engage the receptacle in said support at one side of its pivot and to engage the valve operating lever at the other side of its pivot, said lever being movable when the receptacle is removed from its support to prevent resetting of said valve in open position until the said receptacle is replaced in the support.

In testimony whereof, I have hereunto aflixed my signature.

CHARLES B. BUERGER.

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