US1173976A - Oil-controller. - Google Patents

Description

A. L. JOHNSON.

OIL CONTROLLER. APPLICATSON FILED 1ULY13. 1914.

1,173,976. r v Patented Feb. 29, 1916.

THE COLUMBIA PLANOGRAPH ,co.,' \vAsHlNG'roN, D. c.

ALBERT L. JOHNSON, or LULING, TEXAS.

OIL-CONTROLLER.

Specification of Letters Patent.

Patented Feb. 29, 191

" Application filed July 13, 1914. Serial No. 850,749.

such as will enable others skilled in the art to which it appertainsto make and use the same. V

This invention relates to burners such as are used in connection with steam boilers or the like.

More especially the invention relates to means of automatically controlling the flow of fuel and air or steam to the boiler burner.

The principal object of the invention is to improve and simplify the general construction of devices of this character.

A second object of the invention is to provide an improved device which will automatically control, at the same time, both the fuel and the air or steam supply valves so that as the boiler pressure rises or falls the valves will be closed or opened in accordance with the variation of boiler pressure.

l/Vith the above and other objects in view the invention consists in general ofcertain novel details of construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawings, and specifically claimed.

In the accompanying drawings, like characters of reference indicate like parts in the several views, and Figure 1, is a plan view of the device applied to a boiler. Fig. 2, is a front elevation of the device. Fig. 3, is a section on the line 3-3 of Fig. 1. Fig. 4 is a section on the line 41 of Fig. 2. Fig. 5, is a detailed view of a cross bar used herewith. Fig. 6, is an enlarged detailed section showing the manner of adjusting the spring used herewith for different degrees of tension.

In carrying out the'objects of this invention there is provided a cylinder pin which has anupper end closed by a plate 11 centrally provided with a threaded opening 12 whereto is secured a pipe 13 which leads to' the steam space of a boiler 14. 1V ithin this cylinder is a piston 15 fitted withthe usual follower plate 16 and cup 17. At the lower end of the cylinder 10 is a diaphragm 18 and the piston rod 19 extends through this diaphragm and is secured in the usual manner to the piston 15. Above this diaphragm 18 is a plate 20 which is adjusted with respect to the diaphragm bymeans of the screws 21 and on this plate rests one end of a coil spring 22, the other end of this spring bearing on the piston 15. By means of these screws 21 the tension of the springs may be adjusted as can be readily seen.

Extending downward from the lower end of the cylinders 10 are yoke members 23 and these members are preferably formed inte ral with the cylinder 10 and have at their lower ends a fitting 24 formed with a guide pocket 25 in its upper surface, the piston rod having its lower end located in said guide pocket. The fitting 24 is provided with a T-shaped passage 26 and to the branches of this passage are fitted respectively the fuel pipe 27 and the steam or air pipe 28, it being understood that either liquid or gaseous fuel may be used. Each of these pipes 27 and 28 is provided with a valve casing 29 having a seat 30 therein and on these seats 30 are adapted to fit the valves 31. Each of these valves 31 has an upwardly extending stem 32 which has its upper end threaded as at 33. The piston rod 19 is also threaded as at 34:. Extending across the device is a bar 35 which has circular openings adjacent its ends and in its center for the reception of the stems 32 and the piston rod 19. This bar is held in position on the rod 19 by means of the nuts 36 and similarly the bar is held by nuts 37. Extending from the stem of the T-shaped passage 26 is a connection 38 to the burner in the fire box of the boiler.

In using the device the tension of the spring 22 is properly adjusted and also the valves 31 are adjusted by means of the nuts 37 Now when the boiler pressure rises the piston 15 will be forced downward and thus carrying with it the valves 31 so that the valves will partially or wholly close the openings in the valve seats thus the supply of fuel and air or steam is reduced as the boiler pressure rises and consequently the heat in the fire box is reduced which results in a decrease of the boiler pressure and the restoration of the piston to its position. In like manner if the boiler pressure falls the spring 22 will force the piston upward and open the valves to a greater degree so that an increased flow of fuel and air are seen takes place with the result of increasing the heat in the fire box and thus raising the boiler pressure to its proper point. There has thus been provided a simple and eflicient device of the kind described and of theehar-v acter specified.

struction of this invention without departing from the material principles thereof. "It ,islnot therefore desired to confine; the invention to the exact form herein shoavnanddescribed but it is Wished to include all such as" come properly ithin the scope .elaimed.

Having thus'describedthe invention, ,What' is claimed as new is:

Id a r ato Q f h d ri ed oylinder, a yoke depending from the eylinder and having longitudinal slots for-med in its arms, a bar slidably-f moiinted in the slots, i a fitting ,carried by the lower ends of the y a ms, a uid iwqkef; te m sen n -1y the fitting, means'forbonn'ecting the cyl'-' V inder to a boiler, 'a rrpiston movable in the cylinder, L- aL-rOd :for' the piston having its lower end slidably engaged in the pocket, a

i h fes e 0 tw -W e (lopies of this patQnmay be obtainedtor fiveeents each, byaddressing the Commissioner of Patent s, Washin on, .02

pluralityofvalves for controlling flow of V 'fluid from the fitting toa burner, stems for the valves, said stems and piston-rod being ,adj n stably c'onneoted to the bar and mova-ble' j therewith, and a spring'for the piston, and means for regulating the tension of the i

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