US817069A - Combined stop and check valve. - Google Patents

Description

.110. 817,069. PATENTED APR. 3, 1906.

L. KACZANDER.

COMBINED STOP AND CHECK VALVE.

APPLICATION rmm SEPT. 21. 1904.

[NV/51V TOR UNITED STATES PATENT OFFICE.

LEOPOLD KAOZANDER, or NEW YORK, Y.,ASS1GNOR To NATHAN MANUFACTURING COMPANY, or NEW YORK, N. Y., A CORPORATION.

comsmzo sToP AND CHECK VALVE.

Patented April 3, 1906.

Application filed September 21,1904. Serial No. 225.336. 7

To (ill whom it may concern:

Be it known that I, LEOPOLD Knozannnn a citizen of the United States, residin in the city, county, and State of New Yor have invented certain new and useful Improvements in a Combined .Stop and Check Valve, of which the following is a full and clear descrpltion.

eck-valves of the type here in consideraclose down automatically, and thereby prevent a backflow of water from the boiler when the feeding apparatus is not in operation. The check requires occasional inspection, cleaning, and grinding, and the seat of the valve requires reseating when worn, and for these urposes a capis usually provided in line wit the center of the valve and valvebody, the removal of which opens access from above to the valve and its seat. Frequent reseatin of the valve-seat in the body finally makes t e body part unsuitable for use, and to avoid the wearing out of the body in this manner check-valves have been constructed with removable seats held in the body in some suitable manner. In all these constructions repairs to the valve or its seat cannot be accomplished with pressure in the boiler, inasmuch as the removal of the usual cap or the removal of the seat would cause the steam to issue in large volume through the exposed openin s. To revent this, check-valves have een ma c with stopvalves laced between the valve and the final outlet into the boiler, so that when the stop valve is closed communication between the boiler and the valve-chamber is shut off.

A combined stop and check valve to fully meet working requirements should contain a sto valve, a removable check valve seat, an a ca ,so placed relatively to each other that wit the stop-valve closed the checkvalve seat and valve for considerable repairs can be removed from the body together, while, on the other hand, for inspection or slight repairs the valve alone may be removed wlthout disturbing the seat and the pipe connection between the valve-body and the feeding apparatus. Furthermore, the

parts should be so combined and put together as to allow of their rearrangement and readustment in order that the valve may be appllecl 1n eitherright or left hand position, according to the requirements of the case, thus enabling one valve to occupy either position Instead of requiring se arate valves for the right and left sides 0 boilers, particularly locomotive-boilers, as has hitherto been the case, and in this way permitting a railroad to keep on hand a much smaller stock of boiler check-valves than otherwise would be practicable. I am not aware that combined stop and check valves have been in use heretofore containing all these desirable features and elements so combined and placed relatively to each other, so as to form a compact, simple, and efficient construction with the parts readily accessible by ordinary means which are at the disposal of any man who may be in charge of a steam-boiler. I have more particularly in view the use of such check-valves in connection with boilers of locomotive-engines, and the details are arranged and shown with particular reference to such use, although the check-valve, as shown, is applicable to any kind of boiler.

A construction combining these desirable features is illustrated in the accompanying drawings, to which I shall now refer for a better understanding of my invention.

In the drawings, Figure 1 is a longitudinal vertical section of the device on line 1 1, Fig. 2. 2 is a transverse vertical section on line 2 2, Fig. 1.

A is the valve case or body, divided into two chambers B and O by means of a partition-wall D, which at E contains the seat for the shut-off or stop valve, consisting of the usual disk F, screw-spindle G, bonnet H, and operating-handle I. Chamber B, which is vertical and has a clear opening all the way through, communicates wlth the boiler only as permitted by valve F, whereas chamber 0, which is exterior to and at right angles with chamber B, is in continuous commumcation with the boiler through the side chamber K, which terminates in a flange L, by means of which the check-valve is attached to the boiler in the usual and well known manner.

M is the check, seated on and uided in the seat-piece N, which seat-piece y means of the nut O is attached to the inlet end of the valve-body and for convenience sake is elbowshaped, being provided at P with a union-con ling, to which is attached the pipe which lea s from the check-valve to the feedin apparatus.

15 a cap controlling an opening through which the check M may be inserted or removed as required.

The top and bottom ends of chamber B are formed as symmetrical threaded necks, so that the ca R and the seat-piece N with its nut O, will interchangethat is, one may take the place of the other,whereby the check-valve is made reversible and suitable for use on either side of a boiler.

In the position shown in the drawings valve F is closed and pressure is removed from chamber B. By loosening the two nuts 0 and P the seat-piece N and the check-valve M may be dropped out of the body together for the purposes of reseating or grinding in the. valve, or if only slight re airsinspection of the check and seat, 0 caning of the same,.&c. are required the nuts 0 and P and the attached pipe. may remain undisturbed and the check may be taken out and its seat exposed for inspection. by removing the cap R.- 4

It Wlll be seen that the construction is very simple, all parts are thoroughly accessible,

and the removal and replacement and rearrangement of parts maybe accomplished by the use of the most ordinary toolssuch as a spanner-wrench, for example-which is always at the dis osal of any man having to attend to such clieck-valves.

I consider myself to be the first to have constructed a combined stop and check valve in which opposite symmetrical ends of the check-valve chamber are closed by a checkvalve seat and a cap, removable and interchangeable the one with the other, in order to impart to the valve the reversibility rel right or left position to the boiler to whlch it is connected.

' What, therefore, I claim, and desire to secure by Letters Patent, is as follows:

' 1. In a combined sto and check valve and in combination, a chec -valve chamber havin symmetrical threaded open ends, a checkva ve seat applied to one of theends, and a cap applied to the opposite end, the seat and the ca being removable and interchangeable, t e one with the. other, substantially as and for the purposeshereinbefore set forth.

2. In a combined stop and check valve, and in combination, a valve-body comprising a vertical check-valve chamber with clear opening all the way through ands mmetrical threaded ends, and a stop-valve c amber exterior to, and at about right angleswith, the check-valve chamber, acheck-valveseat and a ca removably applied to .the ends. of, the chec -valve chamber and interchangeable, the one with the other, for-the purposes in order to permit it to be applied in stated, and a stop-valve and-seat, thereforin the stop-valve chamber,' substantially as hereinbefore'set forth. 7

In testimony whereof I aflix-my-signature in presence of two. witnesses.

LEOPOLD KACZAN-DER. Witnesses: ADoL'PH. BARGEBUHR, JAMES E. MURPHY.

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