US1305539A - Charles ball-are hale - Google Patents

Description

C. B. HALE.

NEEDLE VALVE.

APPLxcAioN FILED MAY zo, 191e.

Mmmm@ June 3, M9.

SATES PATENT QFFICE.

CHARLES BALLARD HALE, OF PARK RIDGE, ILLINOIS, ASSIGNOR TO TIME-SYSTEMS COMPANY, OF PORTLAND, MAINE, A CORPORATION 0F MAINE.

NEEDLE-VALVE.

Application ined May 2o, 1916.

T0 ZZ whom t may concern.'

Be it known that I, CHARLES BALLARD HALE, a citizen of the United States, residing at Park Ridge, in the county of Cook and State of Illinois, have invented certain new and useful In'iprovements in Needle- Valves, of which the following is a specification.

This invention relates to double needle valves of the type especially designed for use in connection with pneumatic clock systems, whereby any of the secondary or subsidiary clocks may be disconnected from the line pipe, without interfering with the operation of the remaining clocks on the line, or with the passage of air through the line pipe.

Furthermore, the present invention has for its object the construction of a double needle valve which embodies a minimum number of parts.

IlVith the above and other objects in view, as will hereinafter be apparent, this invention consists in the construction, combination and arrangement of parts, all as hereinafter more fully described, claimed and illustrated in the accompanying drawing Figure l is a view illustrating diagrammatically a series of secondary or subsidiary clocks connected to the line pipe;

Fig. 2 is a side elevation of a valve constructed in accordance with the present invention, illustrating the cooperation thereof with the line pipe.

Fig. 3 is an elevation taken from the right of Fig. 2 with parts thereof omitted;

Fig. l is an enlarged elevation of the valve illustrating the cooperation thereof with the line pipe and the means of operating the valve;

Fig. 5 is a section line along line 5 5 of Fig. 4 and illust 'ates the internal mechanism of the valve and the means for operating the same, the valve being shown open; and

Fig. 6 is a fragmentary similar view illustrating the valve closed.

As the particular function of this invention is the use in connection with the secondary or subsidiary clocks of a pneumatic clock system, the present invention will be illustrated and described in connection with such systems, but it will be apparent that this valve has many other uses.

In pneumatic clock systems there is usu- Specicaton of Letters Patent.

Patented June 3, 1919.

Serial No. 98,764.

ally provided a master clock and a series of secondary or subsidiary clocks, said subsidiary or secondary clocks being connected in parallel to the master clock by means of a line pipe. The master clock transmits impulses of air through the line pipe which operates all of the secondary clocks, connected to said line pipe, in unison, said air being held under pressure in the line pipe until released by the master clock. If, however, a secondary clock should be removed from the system, and the branch pipe connecting said clock to the line pipe be left open, the remaining secondary clocks, connected to the line pipe, would fail to operate in unison and may possibly fail entirely to operate. For this reason, it is desirable to provide a means whereby the branch pipe connecting a secondary clock to the line pipe may be closed, without interfering with the passage of air through the line pipe, when it is necessary to disconnect the secondary clock from the linepipe.

Reference being had more particularly to the drawing, 10 indicates the line pipe, provided at suitable intervals with the branch pipes 1l, each branch pipe being designed to connect a secondary clock 13 to the line pipe by means of the connecting pipe l2. For the purposes of illustration, the line pipe is shown below the secondar 1 pipes, whereas in practice it is usually sealed in the wall to the rear of the secondary clocks, the branch pipes piercing the wall and entering the secondary clocks through the back of the casing thereof: hence the connecting pipe l2 is usually within the Acasing of a secondary clock 13.

The needle valve forming the subject matter of the present invention, constitutes the means of communication between the connecting pipe 12, which may be either flexible or rigid, and the branch pipe ll, and comprises a valve casing la provided with a passage 15 in one end thereof, which is interiorly threaded as at 1S for the reception of the exteriorly threaded end lleL of the brauch pipe ll. A partition 17 is formed at the inner end of the passage l5 and is pierced by a central opening or aperture 18, which constitutes a contraction or stricture in the passage l5, and thereby forms a valve seat. On the opposite side of the partition 17 to the passage l5 there is formed, in the casing 14, a cavity 19, alined with the passage l5 and interiorly threaded throughout a portion of its depth as at 20. The inner end of this cavity 19 terminates in a shoulder 20a, which creates a chamber 21, comprising a continuation of the cavity 19 and communicating directly with the aperture in the partition 17.

A nipple 22 extends at right angles from the casing 14 at a point in alinement with the chamber 21 and is pierced throughout with a passage 23, connecting directly with said chamber 21.

rlhe connecting pipe 12 is secured to the nipple 22 at one end, and at the other end to the secondary clock movement on the interior of the clock casing 13. Manifestly therefore, an impulse of air, transmitted through the line pipe 10, passes into each branch pipe 11 and through the passage 15, the aperture 18 of the partition 17 to the chamber 21, whence it escapes through the passage 23 of the nipple 22 to the connecting pipe 12; from which it acts directly upon the clock movement.

lf the connecting pipe 12 was disconnected from the nipple 22, it is apparent that the air under pressure within the line pipe 10 and the branch pipe 11 would escape entirely from the system, so that the remaining secondary clocks would be unaffected by the air, or at least only partly affected, unless the aperture 18 of the partition 17 was closed prior to the disconnection. Therefore, a needle valve is mounted in the cavity 19 of the casing 14 so that it will close the aperture 1S of the partition 17 when so desired. To accomplish thisa bushing 24 is threaded into the cavity 19, said bushing being provided with a hexagonal head 25, by means of which the bushing is rotated in the cavity. The end of the bushing is provided with a feather edge 2G which, when the bushing has been threaded completely into the casing 14, bears against the shoulder 2()a thereof and spreads, locking the bushing within the cavity 19 so that it can only be removed by the use of a wrench and will therefore remain locked within the cavity under normal conditions.

An internally threaded passage 27 is formed in the bushing 24 and receives the exteriorly threaded valve stein 28. At its inner end the valve stem is provided with a double cone valve 29, beveled on both sides thereof, so that one side thereof can be seated in the aperture 18 of the partition 17, and the opposite side thereof be seated in the inner end in the passage 27 in the bushing 24. The outer end of the valve stem 28 is provided with a squared socket 30 for the reception of a key 31.

From the foregoing it is apparent that the present valve is constructed of three pieces, namely the body or casing 14, having the nipple 22 constructed integrally therewith; the bushing 24 arranged to be thread ed into the cavity 19 of the casing 14; and the valve stem 28, carrying the valve 29, and arranged to be threaded into the passage 27 of the bushing 24 and to be normally operable therein. As has been heretofore described, the air normally passes from the branch pipe 11 through the aperture v18 in the partition 17 and into the chamber 21,

whence it escapes through the passage 23 of the nipple 22. This is possible only when the valve 29 is seated as illustrated in Fig. 5, viz.: with the valve head seated at the inner end of the passage 27 of the bushing 24, where it forms an air tight seal'for said passage so that none of the air passing through the casing or body 14 can escape from the chamber 21 thereof except through the passage 23 of the nipple 22. However, by rotating the valve stem 28, by means of the key 31, adapted to be inserted in the socket 30 of the said valve stem, the valve 29 will be seated in the aperture 18 of the partition 17, as illustrated in Fig. 6, thereby sealing said aperture and likewise the branch pipe 11.

lanifestly when a branch pipe 11 is sealed by the valve head 29, the secondary clock 13 cooperating therewith may be disconnected, repaired or otherwise adjusted without affecting the remaining clocks connected to the line pipe 10; or without permitting any air held under pressure in the line pipe 10.

to escape.

In the drawing the connecting pipe 12 is illustrated as made of rubber, or other ieX- ible material, and merely slips over the nipple. teriorly threaded for the purpose of making a connection between a rigid connecting pipe 12 and the said nipple, when it is so desired.

Vhat is claimed is 1. The combination with a valve casing, having a passage therethrough, of an apertured partition in said passage, a bushing threaded into one end of said casing and a feather edge formed on the inner end of said bushing adapted to be spread when the bushing reaches the inner endv of its movement for the purpose of locking the bushing within the casing aforesaid.

2. The combination with a casing, having a passage therethrough, of an apertured contraction in said passage, a shoulder formed in said passage adjacent to the contraction aforesaid, a bushing threaded into the end of said passage adjacent to said shoulder, and means carried by said bushing and adapted to contact with the shoulder aforesaid for locking the bushing within said passage.

3. The combination with a valve casing, having a passage therethrough, of an aper- Atured contraction in said passage, a shoulder formed in said passage adjacent to the contraction aforesaid, a bushing threaded However, the nipple 22 may be ex-- into the end of said passage adjacent to said shoulder, and a feather edge formed on the inner end of said bushing and adapted to Contact With and be spread 'by the shoulder aforesaid for lockingl the bushing Within said casing.

4E. The combination with a valve casing, having a passage therethrough, of an apertnred contraction in said passage, a shoulder formed in said passage adjacent to the contraction aforesaid, a bushing threaded into the end of said passage adjacent to said shoulder, having an interiorly threaded pas sage therein, a feather edge formed on the inner end of said bushing and arranged to contact With and be spread by the shoulder aforesaid for iixing the bushing in the casing, and a valve adjustably carried by the bushing aforesaid, adapted to close the contraction in the passage of the casing.

5. The combination with a valve casing, having la passage therethrough, of an apertured contraction in said passage, a shoulder formed in said passage adjacent to the contraction aforesaid, a bushing threaded into the end of said passage adjacent to said shoulder, having an interiorly threaded passage therein, a feather edge formed on the inner end of said bushing and arranged to contact With and be spread by the shoulder aforesaid for fixing the bushing in the casing, a v-alve stein threaded into the passage of said bushing, and a double cone valve carried at the inner end of said valve stein and adapted to seal either 'the contraction in the passage of the casing, o-r the inner end of the passage in the bushing.

6. The combination with a valve casing, having a passage at one end thereof, terminating in a shouldered cavity in the opposite end thereof, of an apertnred partition separating said shouldered cavity and passage, a bushing threaded into the cavity, having an interiorly threaded passage therein, a coextensive feather edge fornied on the inner end of said bushing and arranged to lclontact With the shoulder of the cavity aforesaid to be spread thereby for the engagenient of the Wall of said cavity, a valve stein threaded in the passage of said bushing provided With a key socket in its outer end, and a double cone valve formed on the inner end of said valve stein, and adapted to seal either the opening in the partition aforesaid or the inner end of the passage in the bushing.

CHARLES BALLARD HALE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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