US2016372A - Measuring valve - Google Patents

Description

Oct. 8, 1935.

A. J. JENNINGS MEASURING VALVE Filed June 21, 1930 INVENTOR:

ATTORNEY$ Patented Oct. 8, 1935 UNITED "STATES 2,016,372 MEASURING VALVE Aaron J. Jennings, Battle Creek, Mich, assignor, by mesne assignments-to The Farval Corporation, Cleveland, Ohio, a corporation of Ohio Application June 21, 1930, Serial No. 462,:765

4 Claims.

The present invention pertains to a novel measuring valve designed particularly for use in lubricating systems, although equally useful in other applications where a measured quantity of fluid is to be discharged.

The principal object of the invention is to provide a simple and effective device of this type characterized by the absence of springs such as are commonly used in measuring valves. The

19 movable parts of the device constituting the present invention consists merely of a piston and a double valve slidably mounted in appropriate cavities formed in the valve body. These parts are pressure actuated and are so related in the device that a measured charge of fluid is alternately admitted and discharged.

The invention is fully disclosed by way of example in the following description and in the accompanying drawing, in which- Figure 1 is a longitudinal section of the device Figure 2 is a similar section of the device in another position;

Figure 3 is an end view; and Figure 4 is a longitudinal section of a modified construction.

Reference to these views will now be had by use of like characters which are employed to designate the corresponding parts throughout.

In assembling the valve body, there is promeasuring chamber 2 of suitable size and a passage 3 adjacent thereto, preferably in parallel relation. End caps 4 and 5 are then secured to the ends of the cylinder to close the same. The end caps are previously drilled at 6 at right angles to the cylinder and formed respectively with branches 1 which connect the lines 6 to the passage 3. This system now forms a continuous passage which will hereinafter be called a passage. It will also be seen thatv the branches 1 are of smaller diameter than the central portion 3 of the passage, whereby valve seats 8 and 9 are formed at the ends of this portion.

The free ends ID of the passage are adapted for the admission of fluid thereto and are therefore identified merely as intake means in the remainder of the description and in the claims. A nipple I I extends from the central portion 3 of the passage and constitutes the discharge means.

The measuring chamber 2 has a piston l2 slidable therein from end to end and carrying spacers l3 at, opposite sides and adapted to engage the members l and 5 to retain the major portion of the piston spaced therefrom when the piston is in extreme positions. Ports l4 and I5 connect the vided a main cylinder I in which is drilled a passage} to the chamber 2 at opposite sides 01 the piston and are preferably located directly adjacent the end members 4 and 5 respectively.

In the enlarged portion 3 of the passage is provided a valve structure consisting preferably of 5 a valve stem l6 carrying heads I! and I8 at its ends. The valve heads are so related to the seats 8 and 9 and ports I and I5 as o obstruct the passage alternately at said seats; while the port It or l5 at the closed seat is open to the discharge 10 means II and the other port closed to the discharge means.

Lines l9 and 20 for supplying fluid under pres sure are connected to the inlet means In at the ends of the passage in the end members 4 and 5 respectively. The corresponding intake means of a plurality of valves may obviously be coupled into the respective lines I!) and 20.

In the operation of the device, let it be assumed that the line is first opened to admit fluid 20 under pressure into the intake means formed in the end member 5. The pressure moves the double valve towards the other end member 4, as shownin Fig. 1, whereupon the head I! obstructs the passage at the seat 8 and leaves the chamber 2 open through the port [5 to the operative intake means. Fluid under pressure thus enters the chamber 2, moving the piston also against the opposite end member 4. The volume available in the chamber at the present intake side constitutes 3.) the measuring volume. When this space is filled, the line 2|] is closed.

On the next operation, the line I9 is opened, whereupon the valve structure moves towards the opposite end member 5 as shown in Fig. 2. In this position the head l8 closes against the seat 9, thereby closing the filled chamber to the inoperative intake means in the member 5. At the same time, the portion of the chamber 2 directly adjacent the port i4 is opened through this port to the operative intake means. The flow of pressure fluid through this path moves the piston towards the opposite end member 5. By the seating of the head I8, the previously filled side of the chamber 2 is opened through the port l5 to the discharge means ll, while the other head I! has closed the operative intake means to the discharge means. The aforementioned movement of the piston therefore expels the previously measured charge through the port l5, passage section 3 and discharge means ll into the bearing or other device to which the discharge means may be connected. During this operation, the chamber is filled at the side receiving the pressure fluid, whereby a measured charge is provided for discharge-in-asimilar manner when the device is again operated from the other intake means.

In Fig. 4 isillustrated a modification wherein the central portion 23 of the passage may be of the same diameter as the other parts in the end members 24 and 25. Itwill be evidentthat the passage section 3 of Figs. 1 and 2 must be of. the same diameter as the valve seats l1 and II in order to permit insertion ofv the double valve 'larged at 26 and 21. tion of the valve heads, the valve structure is The ends oi the section 23 are en-.

In order to permit insermember.

comprised of two parts comprising heads 28 and 29 in the en arged portions 28 and 21 re spectively andstems SIS-and 3i extending from the heads intothe passage section 28 but-fitting loosely thereinI Because of this arrangement, I

the stemsmay beinsertedseparately from opposite ends of the passage section '23. The .iree ends of the stems abut each other, and the'stems function as if they were a single member: pro-'- vided with valve heads 'atthe ends as in Figs.

. -=Alth'ough specific embodiments of the invention have been illustrated and described, it will be apparent that various alterations in the =details of construction maybe made without de parting from the scope of thelinvention as in-f dicated by the appended claims.

What I claim is:--

1. In a measuring valve, a valve body having a measuring chamber and a. passage adjacent thereto, an intake means at each end of said passage and adapted'for the establishmentof unequal pressures simultaneously therein, and

discharge means intermediate said ends, a piston slidable in said chamber, ports connecting said passage to said chamber at opposite sides of said piston, valve heads slidable in said passage, the intermediate portion of said passage being of less diameter than its end portions, shoulders between said intermediate portion and the end .1

. a measuring chamber and a passage adjacent thereto, an intake means at each end of said passage and adapted for the establishment of unequal pressures simultaneously therein, and discharge means intermediate said ends, a piston slidable in said chamberg'ports connecting said passage to said chamber at opposite sides of said piston, valve heads slidable in said passage, the intermediate portion of said passage being of less diameter'thanits end portions, shoulders between -said* intcrmediate portion and the :end portion of said passage for the abutment oi the inner faces of said heads, separable spacing means between said heads and extending through 5 the intermediate portion of said passale, said heads being adapted, by'greater intake pressure inone of said intake means, to open said means to one o! said'ports and to close the other intake means to the other of said ports, and to open the latter port to said discharge means.

3 In a measuring valve, a valve body having a measuring chamber and a passage adjacent thereto, an intakemeans at each end of said passage and'adapted-ror the establishment of unequal pressures simultaneously therein, and

discharge means intermediate said ends, a piston slidablein said chamber, ports connecting said passage to said chamber at opposite sides of said piston,- -vaive heads slidable in said passage,

the intermediate portion of said passage ofless diameter than its end portions; shoulders between said intermediate portion and the end; portion of said passage for the abutment of the inner faces of said heads, separate stem por- -.tions on said heads, said stem portions extend: ing into the intermediate-portion of said passage and having their inner ends 'in abutting 3 relationship, said'heads being adapted by greater intake pressure in one of said intake means, to

'open. said means to one-of said ports and to close the other intakemeansi to the other of said ports; and to open the latter port to said discharge means.

4. A feeder for lubricating bearings cofirp'rising an outer casing, a measuring chamber, a

' piston adapted to reciprocate in said measuring chamber, a valve chamber having two inlet ports of said inlet ports adapted to close the other inlet port and to direct lubricant into said meatsuring chamber on one side of its piston and to force said piston to discharge lubricant from said measuring chamber on the other side of said piston and to said outlet port, said valve com prising dual heads adapted to open and close said inlet ports, shoulders positioned in said valve chamber, the inner faces of said heads being adapted to abut said shoulders when the corresponding valve head is in a position to open its inlet port, and separate stem portions on said heads, saidstem portions having their inner ends in abutting relationship. I

AARON J. JENNINGS.

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