Патент USA US2407944код для вставки
Sept- 17, 1946«_ ‘ c. H. BAssETT INDICATOR FOR VALVES , Filed lamb. 17,` 1944 2,407,944 Patented Sept. 17, 1946 2,407,944 UNITED STATES PATENT OFFICE 2,407,944 INDICATOR FOR VALVES Charles H. Bassett, Chicago, Ill., assignor to Crane Co., Chicago, Ill., a corporation of Illinois Application March 17, 1944, Serial No. 526,981 l 1 Claim. `(Cl. 116-125) This invention relates to indicators for valves and is more particularly concerned with indicat ing means for use on valves or the like of the non-rising stem type to disclose the position of the valve closure member with respect to the body seat in the valve housing, and has for an object the provision of an indicating means which is relatively inexpensive in construction, reliable in operation, and which will not readily get out of order. 10 This invention further contemplates the provi 2l. A stumng |box 28 anda gland 29 suitably en close the stem. In operation, rotational movement of the hand wheel 9 causes axial movement of the pointer I2 between the full open position and the full closed position marked at 3| `and 32, respectively, on the indicator plate Il. Suitable intermediate grad uated markings 33 are provided on the: plate to indi-cate intermediate positions of the Valve closure member (not shown). In repacking a valve equipped with an indicator device as shown, the handwheel is removed from sleeve may be formed integral with or attachable the stem to permit removal of the gland 29. After to a handwheel to receive and actuate an inter repacking of the stuffing :box it will be apparent nally threaded pointer in order to permit repack 15 that the handwheel may again be mounted on ing of a valve stufling box without disturbing the the stem without disturbing the original setting original setting of the indicator. of the indicator device. With prior indicator de T'his invention embodies other novel features, vices the pointer is either threaded onto the stem sion of an indicating means in which a threaded details of construction and arrangement of parts or on a bushing secured thereto and the removal which are hereinafter set forth in the specifica 20 thereof necessitates the objectionable resetting of tion and claim and illustrated in the accompany the pointer with respect to the graduations of a ing drawing, forming part thereof, wherein: plate and to the valve closure member. Fig. 1 is a front elevational view showing an While this invention has been shown in but one indicator embodying features of this invention form it is obvious to those skilled in the art that as mounted for use on a non-rising stem valve. 25 it is not so limited «but is susceptible of various Fig, 2 is a sectional View taken along the line changes and modifications without departing 2_2 of Fig. 1. . from the spirit thereof or the appended claim. Referring now to the drawing for a better un I claim: derstanding of this invention, I show a valve indi An indicator device for a non-rising stem valve cator device comprising a sleeve 6 which is ex 30 or the like having a closure member and an op ternally threaded at 'l and secured to a hub por erating stem, stem actuating means therefor pro tion 8 of a handwheel 9 by means of set screws vided with a lower depending hub portion, an ex ll. If desired, the sleeve 6 may be formed inte ternally threaded sleeve provided on and ñxed gral with the handwheel. A pointer I2 is inter to the external portion of the said hub portion nally threaded for axial movement along the 35 of the said stem actuating means, an internally sleeve 5 and is formed with a lug portion I3 for threaded pointer mounted for relative rotation on engagement between a pair of ñngers I4 deñning and axial movement along said threaded sleeve, a slot I6 in an indicator plate I'l. The plate the said rotation and axial movement :being re H is provided with an aperture i8 to receive a sponsive to rotational movement of the said stufling box bolt I9 and is held against displace threaded sleeve, a graduated indicator plate co ment therefrom by a nut 2|. acting with the said pointer to prevent rotational The upper portion of a non-rising stem valve movement of the said pointer but to provide axial 22 has been shown to illustrate the application movement and for indicating the position‘of the of this invention and comprises a stem 23 having said closure member at and between its open and a square portion 24 to receive the handwheel 9 45 closed positions. ' l and a threaded end 26 to receive a locking nut CHARLES H. BASSETT.