US1071759A - Valve. - Google Patents

Description

F. P. LANDIS.

VALVE.

AFPLIUATION FILED SEPT. s. 190s.

LUHJMQ. Patented Sept. 2, 1913.

3 SHEETS-SHEET l.

I I I I annum? F. F. LANDIS.

VALVE. APPLICATION FILED SEPT. s. woo.

Patented Sept. 2, 1913.

3 SHEETS-SHEET 2.

uvcnkor @Umweg F. P. LANDIS.

VALVE.

APPLIOATION FILED sums, 190s.

LU? M259, Patented sept. 2, 1913.

vwantoz @Ui-memes r w I" FRANK F. LANDIS, OF WAYNESBORO, PENNSYLVANIA.

VALVE.

Specification of Letters Patent.

Patented Sept. 2, 1 913..

Application filed September 5, 1906. Serial No. 333,320.

T 0 all whom it may concern Be it known that I, `FRANK F, LANms, a citizen of the United States, residing at lVayncsboi-o, iii the county of Franklin and State of Pennsylvania, have invented certain new and useful Improvements in Valves, of which the following is a specitication.

In the use of electrically operated program clocks, it is desired at times to sound a signal at stated intervals, such signal beingr in some cases a steam or compressed air whistle. To provide a valve which may be controlled and operated by an electric current of moderate power, such as is used in a program clock apparatus7 and thus provide for the operation of such a signal without interfering with the operation of the apparatus or requiring additional current' or power, is the object of my present invention, and it consists in the particular construction and arrangement of parts hereinafter de scribed and claimed, whereby these objects are attained, all as will be hereinafter more fully described and claimed.

Referring to the accompanying drawings which are made a part hereof and on which similar reference characters indicate similar parts, Figiire l is a side elevation of a valve casing and operating mechanism embodying my said invention, Fig; 2 a cross section through the same on the dotted line 2-2 in Fig. l, and Fig. 3 a horizontal section on the dotted line 3-3 in Fig. 2.

In said drawings the portions marked A represent the main body or casing ot the valve, B a hood inclosing the valve niechanism, C the valve proper, D an auxiliary valve, and E a housing for supporting the electric valvev actuating mechanism. The valve body or casing A is of suitable form for the purpose, having ttings at each end A and A2 for connection with a line of pipe. The entrance through the end A leads into the chamber inclosed by the hood B. The valve seat comprises a bushing A3 mounted in a suitable screw-threaded seat in said body A between the inlet end A and the outlet end A2. The top of said bushing is formed with an annular face a dressed true to serve as a seat for the valve. Under the lower end of bushing A is mounted a soft metal packing ring a to insure a tight joint. A centraluvertical standard A4 is formed integral with said bushing A.3 being supported by radial arms a2 projecting at intervals from the interior of said bushing and joined to the said standard. Said arms are formed with passage-ways leading through them from the outside of said-bushing to the chamber to receive the fluid coming through the inlet end A.

The valve C is :formed to seat upon the valve-seat a upon the upper edge of bushing A3 and is formed with a central per foration which ts over the standard A4, on which said valve is thus adapted to slide vertically. On its top it is formed with a cylindrical portion C extcriorly screwthreaded and having a cap C2 mounted thereon to completely cover and inclose the top of said cylindrical portion. A pistoni'ing A5 is rigidly mounted upon the top of standard A4 and just fits within said cylindrical portion C.

The auxiliary valve D is a small valve mounted upon a valve scat at one side of the main valve C in a bushing D', which is mounted in an aperture leading to the opening a4 surrounding the lower end of bushing A3. Said valve D is supported upon a stem (l extending into a perforation in the upper end of a sliding rod d which is mounted in a bushing D2 extending through a perforation in valve body A. The lower end of said sliding rod d is formed with a tapered perforation and is supported on the upper end of a stem da.

rIhe housing E is a casting of substantially the form shown in Figs. 1 and 2 and is secured on the underside of the valve body A by bolts c. It is of a form adapted to support a pair of electro magnets E The cores D2 of said magnets are connected at the ends opposite the armature by a yoke E, which is formed with pertorations fitting over said cores to which it is secured by screws c. The ends of said yoke are secured to the sides of the yoke E by screws e2. An armature E composed of a series of metal strips secured together by screws e lef , is mounted upon a rock shaft E adjacent vseat because of its size.

to the opposite end of said magnets. The lower ends of said screws e8 project into screw-threaded perforations in a bar e4 connected by short arms e"i with said rock shaft E5. Said rock shaft E5 is mounted upon pivot screws e which extend through the sides of the yoke E into suitable perforations in its opposite ends. The heads of the screws e2 impinge against the top of a transverse bar c" on the lower end of an arm E", which extends upwardly from the top edge of said armature and is pivoted at its upper end to the upper end of a short link E7, the lower end of which is pivoted to one' end of a lever E8, which is mounted upon a pivot sin a suitable supporting bracket E9 mounted on the body A, Thetwo pivots connecting the opposite ends of link E7 to arm 6 and lever 8 are normally in line with the axis of the rock-shaft E5 so that in operation the lever E maybe started in its movement toward the magnets with the least amount of power, the resistance offered at the start being practically nothing but increasing as the armature appro-aches the magnets and the power thus increases. A counter-balanceweight e9 is mounted on the' opposite end of said lever E8. A circuit closer E1", which may-consist of an ordinary push button, or any device to be operated by hand, but preferably a simple device to be operated by they program clock mechanism, is connected in the circuit with the magnets E by wires 61 and e, one of which is connected with a battery E11 of any suitable form. A cord or wire E12 is connected with the lever E and runs over a sheave e12 to a place convenient to be seized by a handle 613 thereof, by which means said lever E6 may be operated independent of the clock or electrical mechanism when desired.

The operation of my said invention is as follows: The steam, compressed air or other fluid employed comes through the inlet end A of the valve body and into the chamber inclosed by the hood B. The pressure operates to keep valves C and D upon their seats and prevent further progress of said Huid. Under such pressure great power would be required to lift valve C from its For this reason the small auxilia valve D is provided to aid in starting sald movement, as follows: When the circuit connecting the magnets E with the battery E11 is closed by the circuit closer E1", operated by hand or any mecha'- nism, such as a program clock, said magnets are ener ized and the armature E4 drawn againstt e cores of said magnetsLbrin'ging the lever E to theposition shown by dotted lines in Fig. 2, which operatesthrough the link E to raise the' end of lever Es to which the stem d3 is pivoted, vand, through the sliding rod d. and stem draise the valve D notarse from its seat. lts upward movement is limited byA an overhanging shoulder a5v in the casing A just above the top of said valve De Immediately upon said valve D being lifted from its seat the uid under pressure 1n the hood ,B rushes down through the opening in bushing D into the channel a4 surrounding the lower end of bushing A, through the passage-ways in the arms 5,2 and the passage a in the u right A4, into the space between the piston 5 and the cap C2 secured on the top of the cylindrical portion. C of the valve C. The area of the piston AS and interior of said cap C2 being larger than the area of the valve C roper, the pressure operates to raise saidp from its seat and permit the Huid under pressure to rush freely through the opening in the bushing A8 and out through the outlet A2 in the other end of the valve body to the whistle or to operate, in any manner, to sound any character of alarm desired.

valve The circuit closer E19 being released and the circuit broken, by hand or the operating mechanism provided, the weight of the armature and of the valve D and parts which support it upon the lever Bs will operate to cause said armaturel to fall back in the position shown in whole lines and .the valve D to drop upon its seat on the top of bushing D which cuts off the How of fluid through the passages a, to under the cap y C2 and relieves the pressure in the cylinder C beneath said cap, permitting the pressure of the fluid above the valve to gradually seat it upon its seat a on the top of bushing A2, the seating being cushioned and made gradual because of the gradual leaking out of suicient fluid under said cap C2 to permit of the operation. The weight e upon the end of-lever Es is of suflicient gravity to counter-balance the weight of the valve D and vconnecting parts so that the magnetic force is only required rto lift the valve against the pressure of the fluid in the chamber inclosed by the hood B. 4

In order to secure the greatest lifting Ipower with the least Vmagnetic force, I have arranged the connection between leversl E6 and E8 so that the leverage is greatest when the magnetic force is weakest as before mentioned. In Fig. 2, it will be noticed thatv when the parts are in the position indicated by whole lines the pivots connecting the link E'I with the levers E and EB are in line with the axis of the rock shaft E5. Thus, when the magnets are first energized and the armature is the farthest away, but little re-A sistance is -oferedto the starting ofv said armature toward said magnets in response to the magnetic force. The upper end of lever E moves toward the magnets and operates to enlarge the angle between the lever Es andthe link E7, requiring greater power as the angle increases which is supplied outlet ports, a valve seat formed on a suitable bushing secured between said inlet and outlet ports, a main valve mounted on said valve seat, being held in position by a central standard supported by radial arms from said bushing, said arms and standard being formed with passage ways or ports communicating with a port surrounding said bushing, a small valve for closing a port or passage leading from the chamber surrounding said main valve into said ports, and means for raising said auxiliary valve at desired intervals, substantially as set forth.

2. In a valve structure, the combination of the valve body, comprising inlet and outlet ports separated by a main valve contained in a chamber communicating with the inlet port, `an auxiliary port leading from said chamber to beneath a part of the main valve structure of larger area than the valve seat, an auxiliary valve for controlling said port, and means for operating said auxiliary valve comprising a lever connected therewith and pivoted to an arm of an armature of an electromagnet, said electromagnet mounted in an electric circuit adapted to be opened and closed, and means arm being normally substantially in line with the axis of the pivot or shaft on which said armature is mounted, said electromagnet mounted in an electric circuit, and means for opening and closing said circuit, substantially as set forth.

4. In a valve, provided with an inlet and an outlet, a main valve between them, an auxiliary valve controlling a ort leading from one side of said main va ve to the other, means for operating said auxiliary valve comprising an electromagnet, the armature thereof mounted on a rock-shaft and having an arm connected to a lever for lifting said auxiliary valve, the connection consisting of a link pivoted at one end to said arm and at the other end to said lever, the pivots being arranged so that the angle between the link and arm will increase as the armature moves toward the magnets, substantially as set forth.

In witness whereof, I have hereunto set my hand and seal at Washington, D. C., this 28th day of August, A. D. nineteen hundred and six.

FRANK F. LANDIS. [Ls] Witnesses:

E. W. BRADFORD, E. H. PARKINS.

the combination, of a body

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