US1098203A - Feed device for liquids. - Google Patents

Description

J. WILLIAMS, JR. FEED DEVICE FOR LIQUIDS. APPLICATION, FILED JULY15, 1912.

Patented May 26, 1914.

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J. WILLIAMS, JR. FEED DEVICE vFOR LIQUIDS. APPLICATION FILED JULY 15, 1912.

Patented May 26, 1914.

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JOSEPH WILLIAMS, JR., OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO PITTSBURGH CHEMICAL COMPANY, OF PITTSBURGH, PENNSYLVANIA,

PENNSYLVANIA.

Speoicationof Letters Patent.

A CORPORATION OE FEED DEVICE FOR LIQIDS.

Patented May 26, 1914.

Application led July 15, 1912. Serial No. 709,449.

To all whom. it may concern Be it known that I, JOSEPH VILLIAMS, J r.,

a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Feed Devices for Liquids, of which the following is a specification,

means for supplying a measured quantity of liquid to a boiler or other utilizing apparatus, preferably in connection'with a forced feed mechanism, as an injector.

It comprises a reservoir for the liquid provided with circulating conduit pipes vadapted for connection with an injector or the like by introducing a forced feed by suction, a controlling device for regulating the rate of iiow, a connection therefrom to the main feed line, and a. supplemental connection connected therewith, adapting` the device to be used independent of the flow regulating the controlling device and to discharge into the main conduit a materially larger volume of the liquid from time to time as desired.

The device is particularly designed for theV Fig. 11 is a view similar to Fig. 2, showing a modified arrangement, eliminating the controlling device for the drop-by-drop feed. Fig. 5 is a horizontal sectional view on the line V. V. of Fig. 2. Fig. 6 is a partial sectional view of the lower part of the device showing a modified construction. Fig. 7 is a similar view showing a connection from the reservoir to a forced feed device.

The reservoir 2 for the liquid compound is made of sheet or cast metal in square, cylindrical, or other preferred form, having a top 3 and bottom 4. The interior Huid-containing cavity 5 is filled with the liquid through a charging opening 6 having a removable cap 7 and may be drained from the bottom by gravity by any suitable connection.

Extending from a point adjacent to the bottom` of the reservoir 2 upwardly through the top 3, or'in any other suitable manner, 1s a feed pipe 8 communicating with a glass Y measuring tube 9 through a suitable cou- My invention has for its obJect to provide pling 10 anda valve casing 11 having a downwardly extending terminal dropper 12. A. needlevalve 13 is adjustably mounted with relation to the tapered interior of dropper 12 by threaded stem 14 mounted in the valve casing, having a suitable stuffing box l5 and a finger terminal 16. By this means the rate of flow through the dropper 12 can be accurately controlled. A4 similar needle or other suitable valve 17 admits a limited supply of air to the interior of valve casing 11, or may be used to entirely close communication from the atmosphere thereto. A supply pipe 18, which may be connected with an injector or other forced feed device, communicates with measuring tube 9 and also with the bottom of the reservoir by branch pipes 19 and 20, respectively, at each side of a three-way cock or valve 21 mounted in a suitable valve casing and connected with said circulating pipes with suitable ttings.

In the ordinary operation of the device, for the purpose of supplying a drop-bydrop feed to pipe 18, the valve or cock 21 is turned to the position shown in Fig. 2, establishing communication from the tube 9 to pipe 18. Thereupon suction in pipe 18 will induce a flow of the liquid from reservoir 2 upwardly through a pipe 8 and valve 11 in the desired amount as regulated, the operation continuing as long as suction continues or until the supply is exhausted. Vhenitisdesired to discharge into pipe 18 a largel` volume of the liquid, as, for instance, an ounce or more, valve 21 is turned to the position indicated in Fig. 8, establishing communication direct from the reservoir through pipe 20 and said valve, the liquid rising in measuring tube 9 to the same level as that in the reservoir 2. Upon reversing the valve 21 to the position shown in Fig. 2 such measured amount will be discharged downwardly'into pipe 18 and immediately carried to the boiler. In Fig. 4 I have shown a construction in which the latter operation just described is provided for only, without the drop-by-drop feed.

In such case the measuring tube 9 is merely mounted in communication with reservoir 2 through valve 2l and pipe 20 and the other connecting fittings at the top, the upper end of tube 9 being merely connected in the manner shown by ordinary commercial fittings, as elbows l1 and l0 and the pipe sections. These, however, have no other function than that of merely providing a convenient and mechanical mounting for the tube 9, which serves as a sight tube. An air supply cock or valve 17 may, however, be used in the manner indicated, if desired, to supply air to the tube and reservoir.

In Fig. G I show an arrangement in which the reservoir Q is connected with the sight tube 9 through a lower connection 19a embodying a controlling valve lla, by which the sight tube may be entirely cut off if desired. Directsupply connection to the boiler is provided by pipe I8 embodying a measuring valve 21a adapted to discharge a measured quantity of the liquid to the boiler from time to time. For such purpose the valve body Q3@ is provided with a pocket 24: adapted to register with the interior of the reservoir when turned up and to be turned down to discharge into the boiler, as shown in the drawing. In order to eii'ect a free discharge of the measured liquid from pocket Zia it is provided with a small air port 5fL adapted to register with the atmosphere through port 2G when the pocket is reversed, as shown.

In Fig. 7 I show the supply pipe 18D leading from reservoir 2b directly through controlling valve 21" and connected with a force feed device 27" as an injector, having a rateil supply connection 98h, a steam et supply 29h and a delivery pipe 30b leading to the boiler. By this means the valve 2lb may be set to control the flow and the feed of the liquid is accurately regulated and positively effected by direct connection to the injector.

The construction and operation of the device will be readily understood from the foregoing description. It enables the operator to accurately control and observe the operation of the feed at all times so as to avoid Waste or insuiicient supply. It operates to feed during maintenance of suction and to automatically cease operation upon cessation of operation and to deliver the liquid in minute quantities or in a considerable volume from time to time, as desired.

The device is comparatively simple in construction, reliable and efficient in operation and not liable to get out of order, and effects a material economy in the use of the compound, while providing for accurate regulation to suit local conditions as to the character of the water being supplied to the boiler, etc. It may be made in various sizes, proportions, or designs to suit the conditions or requirements of use, and the invention may be changed or varied by the skilled mechanic without departure from the scope of the following claims.

lVhat I claim is:

l. In a feed device for liquids, the combination of a reservoir, a connection to the base of the reservoir, a connection to the reservoir extending outside above the normal line of liquid therein and embodying a measuring tube, a downwardly extending suction tube, and a three-way valve connected with said connections and with the suction pipe adapted to establish communication from one of said connections to the other or from either to the suction pipe, substantially as set forth.

2. In a feed device for liquids, the combination of a reservoir, a connection to the base of the reservoir, a connection to the reservoir extending outside above the normal line of liquid therein and embodying a measuring tube, a circulation controlling valve in said connection at the upper portion of said measuring tube adapted to deliver a limited supply of liquid through the measuring tube, a downwardly extending suction tube, and a three-way valve connected with said connections and with the suction pipe adapted to establish communication from one of said connections to the other or from either to the suction pipe, substantially as set forth.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

JOSEPH WILLIAMS, Jn. lVitnesses:

In'rnn GLICK, C. M. CLARKE.

Uopies of this patent may be obtained for iive cents each, by addressing the Commissioner of atents, Washington, D. C.

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