US622114A - burdett - Google Patents

Description

No. 622,ll4. Patented Mar. 28, i899. F. A. BURDETT.

MECHANISM FOR OPERATING VALVES.

(Application filed Dec. 1, 1897.) (No Model.) 2 Sheets-Sheet 2.

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IUNTTE STATES PATENT Fries.

FREDERICK A. BURDETT, OF NEWV YORK, N. Y.

MECHANISM FOR OPERATING VALVES.

SPECIFICATION forming part of Letters Patent No. 622,1 14, dated March 28, 1899.

Application filed December T0 ctZZ whom, it may concern.-

Be it known that I, FREDERICK A. BURDET'I, a citizen of the United States, residing at New York city, in the State of New York,'have invented certain new and useful Improvements in Mechanism for Operating Valves; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and use the same.

My invention has reference to improvements in and relating to valves; and the object of the invention is to provide an effective means for operating two radiator-valves simultaneously from a point near the top of the radiator. I attain this object by the m echanism illustrated in the accompanying drawings, in which Figure 1 is an elevation of a valve-operating mechanism constructed in accordance with my invention. Fig. 2 is a view, partly in section, on the line A B of Fig. 1. Fig. 3 is an elevation of the valve cap and stem. Fig. 4 is a section of the same on the center line C D, Fig. 5; and Fig. 5 is a plan looking from the top. Fig. 6 is an elevation at right angles to Fig. 3, showing the casing which surrounds the packing. Fig. '7 is an elevation of the support for the vertical shaft. Fig. 8 is a planof the same. Fig. 9 is an under side View of the valve M.

In the drawings similar letters of reference denote corresponding parts throughout the several views.

The inlet and outlet valves A A of a radiator (not shown) are provided at their tops with a plate B, which is held securely in po sition by means of nuts 0 on the valve-tops. The plate B is provided with a hole intermediate the valves to permit the passage of a vertical spindle or shaft D, which is screwthreadedat its lower'end and receives thereon a clevis F, having a corresponding screwthread in its lower half. From the plate 13 the shaftD extends upwardly to a point preferably near the top of the radiator, where it is guided, and finds a suitable bearing in an eye in the support 0. This support consists of the triangular plate 0, through which the shaft passes, which is held against the radiator by means of a bolt P, passing through a bent barQ, fitting snugly around the end sec- 1,1897. Serial No. 660,419. (No model.)

tion of the radiator. The shaft is prevented from being displaced vertically by means of four jam-nuts E, provided in pairs on the same above and below the plate B.

The clevis F is split at its upper end, forming two lugs, and has connected thereto by means of pins F four cross-rods G G, which are placed in pairs on said lugs and are free to turn thereon. The pairs of rods G G are shaped somewhat like an X,having horizontal extensions at each extremity, which are connected by links H and H to clevises K, rigidly secured on the valve-stems. The latter are provided in the valves with caps M, which are peculiarly constructed, as hereinafter described.

To manipulate the shaft D, a crank N or any other suitable device is secured at its upper end, and to avoid any tendency of a lateral motion on the part of the clevis F, I provide thereon an arm or projection R, which is guided on an upright S, suitably secured to the plate B.

To operate the mechanism, the crank N is turned, causing the shaft D to rev0lve,whereby the clevis F and the parts connected therewith are obliged to move upward or downward, as the case may be, thus opening and closing the valves at will.

The arrangement of the rods G G H H .and the clevises F and K is such as to transmit equal pressure to the two valve-stems and to provide for unequal resistances of the valvestems. For instance, if the friction on the valve-stem L is considerably less than that on L then as the mechanism is operated L will be drawn up more rapidly than L, thus increasing the distance in a straight line between the points T and T, the cross-rods assuming substantially the position indicated by dotted lines in Fig. 1. With the arrangement shown this increase can be readily obtained and the cross-rods G G H H and their connections receive any horizontal force which may be produced, and the pressure transmitted to the valve-stems is always vertical, thus insuring an easy action of the valve-stems.

In the mechanism described wrought, rolled, or sheet metal which can be worked by punches and dies has been employed, thereby reducing the cost of manufacturing the same by avoiding the turning or lathework and the finishing rendered necessary when cast metal is employed. The clevises F and K are first cut to suitable lengths, whereupon vertical slits diametrically opposite each other are cut in the perimeter, which extend downward to the part K where the screw-thread begins. On each side of these cuts the part-s are fiattencd out, cut, and punched by suitable punches and dies, thus forming the lugs F and K.

The valve-stems L and L are made from a rod or bar of wrought or rolled metal, properly annealed, of a diameter V cut to such lengths that they will contain sufficient metal to form the head U.

The valve-cap M, forming a packing-holding device, is made from three flat plates of sheet metal (rolled or wrought) pressed into the shape of the pieces \V, Y, and Z. The piece Y is first made with the part Y turned down at right angles to the surface Y The piece \V is thenput on the part Y and the ends Y are bent over into the slots \V The packing is then inserted in the piece \V, and the edge of the latter \V is then turned down around it, thus holding the packing firmly in position. Moreover, I provide in the "alvecap a cylinder X, of sheet metal, which results in an appreciable saving of packing. The piece Z is adapted to fit under the projections Z and Z having depressions which hold the clamp Z securely in position.

\Vhile the surface depressions are considered as sufficient for all ordinary circumstances, nevertheless to prevent any possibility of the part Z from slipping from under Z the part. Z is slotted, Fig. 5, to receive said portion Z, and when clamped into position forms a. rigid connection.

It will be apparent to those skilled in the art that the system of cross-rods G, G, II, and ll may be replaced by a single rod or by a pair of rods; but experience has shown that the construction above set forth is best adapted for the purpose in view, for where a single rod or pair of rods is employed there is a strong tendency for the valve-stems to bend and to wear away rapidly, due to a greater friction or pressure on one valve-stem than on the other.

It is likewise evident that various changes and modifications in the form, arrangement, and construction of divers parts of my invention may be made without departing from the spirit and scope of the same. Hence I do not to secure by Letters 1. In mechanism for operating two radiator-valves simultaneously, the combination with the valves, of a plate connecting said valves, a screw-shaft passing through said plate and extending upwardly to a convenient height near the top of the radiator, a clevis screwing on said shaft split in its upper half to form two lugs, angular cross-rods pivoted in pairs on either lug and similarly connected by means of links to clevises on the valvestems, said rods adapted to transmit pressure from one valve-stem to the other, means for manipulating said shaft and means for preventing a lateral movement of its clevis, substantially as specified.

2. The combination with the radiatorvalves, of a plate secured in the tops of said valves, a screw-shaft passing through said plate and through a guide or support 0 secured to the top of the radiator, a clevis F screwing on said shaft, cross-rods pivoted to said clevis, the stems of said valves being provided with similar clcvises suitably connected to the cross-rods, a crank secured to the upper end of said shaft, said clevis F being provided with an arm or projection R guided on an upright S secured to the supporting-plate substantially as described.

3. In mechanism of the class described, the combination of two radiator-valves, a valvecap provided in each of said valves, consisting of a disk, having its periphery bent downwardly to form a hollow body, a. metal core or cylinder adapted to be received centrally in said disk, suitable packing material arranged around said core, peripheral extensions formed at each extremity of said core and engaging the packing, a valve-stem, a tang connecting said valve stem and cap, and suitable means, as described, for actuating said valve-stem, substantially as described.

4. The combination with mechanism operating as described, of two radiator-valves, a packing-holding device or casing arranged within each of said valves and consisting of a disk having its periphery bent downwardly to form a hollow body, a hollow cylindrical metallic body adapted to be received centrally in said disk, suitable packing material arranged around said metallic body, a valvestem fitted to said disk having its end provided with a stud surmounted by a collar, said stem being secured to the disk by means of clamping members embracing said collar and disk and bent upwardly within the latter to secure the packing therein, substantially as described.

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

FREDERICK A. BURDET".

\Vitnesses:

WALTER O. CoUoH, W. RALPH S UIRE.

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