US1515843A - Fluid-controlling device - Google Patents

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/ r 1,1158% E. J. DE VILLE FLUID CONTROLLING DEVI CE Filed Aug. 31; 1920 EDWARD I. DE VILlLE, OF DAYTON, OHIO, ASSIGNOR TO THE MONARCH ENGINEERING COMPANY, OF DAYTON, OHIO, A CORPORATION OF OHIO. 4

FLUID-CONTROLLING DEVICE.

'Appflication filed August 31, 1920. Serial No. 407,225.

To all whom it may concern:

Be it known I, EDWARD J. DE VILLE, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain newand useful Improvements in Fluid-Controlling lDevices, of which the following is a speci fication. v

My invention relates to improvements in mechanism for controlling a pumping system of the character in which an electric switch is employed for making and breaking a circuit to an electric motor which operates the pump, with provision for open- ,1 ing and closing the switch by the pressure ofthe fluid in the system. My invention relates more particularly to an improved valve which permits the fluid to flow to or from a chamber containing a diaphragm which is operatively connected with the switch mechanism.

Heretofore', 1n mechanism of this character, it has been usual to employ a nozzl with a small aperture which is in communication with the fluid of the pumping till system and through which the fluid flows to the chamber containing the diaphra m. Difliculty has been experienced with sue a nozzle due to the fact, first, that it is apt to become clogged, thereby preventing the operation of the switch devices, and, sec-' ond, because of the fact that the fluid which flows throughit is subject to the pulsations of the fluid in the system due to the pumping action, which imparts like pulsations to the diaphragm and to the switch operating devices, causing considerable wear upon the parts. y

The objectof my invent-ion is to provide a form of inlet for the fluid into the diaphragm chamber which obviates all danger of cloggingand also which permits the fluid to flow into the chamber in a uniform manner and thereby eliminates any tendency of the diaphragm to vibrate under the action of the fluid. i

In the accompanying drawings 2-- Fig. 1 is a vertical section of an electrical switch and. the devices for operating the" ";ing a slight modification.

flexible diaphragm 4 of any suitable materia1, preferably leather or rubber, and above and below this diaphragm the base and nipple are dished out to form a chamber 6 with which the opening 7 through the nip: ple communicates. A stem 8, provided with an annular flange 9 located in an opening in the base plate for guiding purposes, has at its lower end anannular plate 10 which bears against the diaphragm. A spring 11, interposed between a bridge piece 12, through which the upper end of the stem loosely extends, and a collar 13 secured to the lower end of the stem, normally forces the stem and the plate 10 downwardly against'the diaphragm. A bell-crank lever is pivoted on the base at 14, with a short arm 15 pivotally connected to the stem and a long arm 16 pivotally connected to the short arm 17 of a second bell crank lever, which is pivotally supported in the upper end of the casing. The long arm 18 of this second bell crank lever is linked to a lever 19 with a coil spring 20 interposed in the link connection. The lever 19 carries an spring 11, when the fluid pressure drops,

forces the stem downwardly so as to cause the connections described to close the switch. This mechanism is well known and it is thought needs no further description.

My improvement consists in the form of inlet valve which admits the fluid to the chamber 6 through the nipple 3. It consists of a disk 25 held against a shoulder in the nipple by a bushing 26 which may bepressed in with a tight fit. As shown in Fig. 2 this disk is provided with cross cuts meeting at the center of the disk so as to provide a series of four .imperforated V- shaped tongues 27 whose apexes will be the center of the disk. A small aperture 28 may be formed at the center of the disk as shown in Fig. 3, and also if desired two or more disks may be laid upon each other with the cross cuts out of registry as indicated in Figs. 4 and 5,

The disk is of resilient material, preferably thin sheet metal, and the spaces between the tongues formed by the cross-cuts are ordinarily sufiicient to permit the fluid to pass into and out of the chamber. In the event, however, that these cuts should become clogged the pressure of the fluid will spring the tongues sufficiently to open up larger spaces between the adjacent edges and thereby permit the passage of the fluid into the chamber, thus obviating all danger of the switch mechanism failing to operate to open the switch when the pressure in .the system has reached its normal maximum point. This form of inlet also causes the fluid to flow into the chamber under pressure in a uniform, steady manner so that the fluid .in the chamber will not be subjected to the pulsations of the fluid in the system due, to the pumping action, therebycausing the diaphragm to exert a uniform, steady pressure upon the operating parts of the switch; eliminating undue wear upon the parts. By reason of the imperforated character of the tongues the tendency of the pulsating fluid pressure thereon is to cause slight vibrations of the tongues, thus tend-. ing to render them self-clearing by dislodging any dirt which accumulates in the space between the same.

Having thus described my invention, I claim In a device of the character described, the combination with a fluid chamber, a diaphragm in said chamber, actuating devices connected to said diaphragm, an inlet to said chamber whereby the fluid will operat said diaphragm and actuating devices, a valve controlling said inlet con sisting of an insertable disk having a plurality of imperforated spring tongues free to be vibrated by the abnormal pressure of the fluid. v

In testimony whereof, I have hereunto set my hand this 26th day of August, 1920.

EDWARD J. DE VILL-E. Vitnesses a T. M. Dn \Vrrr, E. H. BESGHER.

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