US1775908A

US1775908A - Valve-operating mechanism

Info

Publication number: US1775908A
Application number: US407950A
Authority: US
Inventors: Martin Joseph
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-11-13
Filing date: 1929-11-13
Publication date: 1930-09-16
Anticipated expiration: 1947-09-16

Description

Sept. 16, 1930.

J. MARTIN 1,775,908

VALVE OPERATING MECHANISM Filed Nov. 18, 1929 INVENTOR. Jasc alz l/Zarzz'n.

/ ATTORNEY.

Patented Sept. 16, 1930 PATENT ()FFIE JOSEPH MARTIN, 01* LOS ANGELES, CALIFORNIA VALVE-OPERATING MECHANISM Application filed. November 18, 829. Serial No. 407,950.

This invention relates particularly to valve control mechanism of the drop valve type. Valves of this type may be conveniently used, for example, in the bottom of laundry tubs or other fluid containers, which in use require frequent draining.

An object of the invention is to provide a valve, and associated valve controlled mechanism, which may be quickly and accurately manipulated by the operator to remove the fluid contents of a tank.

A further object of the invention is to provide latchmechanism for holding the valve in open position.

The invention will be fully understood from the following description, taken in connection with the accompanying drawings, in which- Fig. 1 is a top plan view of a tank or chamber provided with my control mechanism;

Fig. 2 is a side elevational view taken on the line 22 of Fig. 1;

Fig. 3 is a section taken on the line 33 of Fig. 1, showing the valve in the open poe1 sition Fig. 4 is a view similar to Fi 3, but showing the valve in the closed position;

Fig. 5 is an end elevational view showing the position of the control levers when the valve is in open position; and

Fig. 6 is an end elevational view showing the relative positions of the control levers when the valve is in closed position.

In the drawings, the numeral 10 designates a chamber provided with a bottom wall 11, side walls 12, and end walls 13, which together form a compartment for retaining water or other fluid. If desired, one side wall of the chamber may be made removable to afford access to the working parts. In the chamber shown the top is left open, and flanges 10* are provided for securing it to the bottom of a larger receptacle.

The bottom wall 11 of the chamber 10 is provided with an outlet opening 1 1, and a drop valve 15 is positioned within the chamber thereover and serves to prevent flow of liquid through the opening when lowered into closed position on the bottom of the chamber. The valve extends transversely of the chamber 10 and is preferably of a rectangular shape, the longer dimension extending lengthwise of the chamber.

The valve comprises a bar 16; a metallic plate 17, preferably of greater width than the bar 16; and a series of rubber gaskets 18, which are clamped to the plate 17 by means of suitable cleats or bolts. The chamber 10 is provided at each end with angular guide bars 19, mounted in a vertical inclined position and adapted to engage the opposite end corners along one side of the valve, to direct the valve to seating alignment with the outlet 1 1. In cases where a closed chamoer is desired, a top lid may be provided which may be hingedly mounted on the hinge supporting members 20.

Raising and lowering of the valve 15 is etfected by turning a rock shaft 21 which errtends longitudinally of the chamber 10 and is journalled in the opposite end walls 13, one end extending through a packing gland 21. Arms 22 are secured on the shaft 21; the arms being provided at their outer ends with hooks 2?, which removably engage loops 2 1 secured to the top plate 16 of the valve. A control arm, or lever, 25 is fixedly mounted on the end of the shaft 21 which projects through the packing gland 21". The lever 25 is provided on one end with a toot plate 28 and is provided at the opposite end with an adjustable counter-weight 27 which serves to yieldingly hold the lever in position to seat the valve.

The lever 25, together with the arms in effect constitute alever for raising and lowering the valve, the point of -fulcrum being the longitudinal axis oi the shaft 21. The weight of the valve itself probably would be sutnciient to cause it to seat without the use of a counter-weight: however, a counterweight affords a more positive action. If desired, a spring may be useu instead of a counter-weight, to yieldingly hold the lever in position to seat the valve. \Vhen seated, the weight of the fluid maintains the valve in that position.

A stop lug 28 is mounted in a boss 29, which is secured to the chamber 10, means thus being afforded to limit upward movement of the valve 15.

Valve is, in this type of equipment, usually of considerable weight, and it is necessary to use latching means for retaining the valve in the open position. F or this purpose I provide a latch-arm 30, pivotally mounted on the spindle 31 which is j ournalled in an end wall of the chamber .10. The spindle 31 is offset from the axis of the shaft 21, as shown in Figs. 1, 5 and 6 The latch-arm is provided at one end with a control handle 82,- and is provided at the other end withan adjustable countenweight-33s If desired, a

spring may be substituted for this counter:

weight, A band or collar34, provided .with

a radially extending dog or tooth 35, is mounted fixedly on the projecting end of the shaft 21 to move with lever 25. The collar may, if desired, be made as an inte ral part of the lever 25. i The latch-armgO is, in turn, provided with an inclined notch of a configuration similar to the tooth 35.

Asshown in Fig. 6, the tooth restson the top surface of the latch-arm 30 at a point immediately overhanging the notch 36. The latch-arm is thus rendered movable by movement of-the lever 25, the movement of the i an lever ==causing a corresponding movement of the collar 34. and tooth 35. .The' counterwvei'ght 83 yieldingly holds the latch-arm in position to be moved by the lever. r. 1

"In the operation of openingf the valve, the

lever '25 is turned by depressing the foot plate 26 which, in turn, causes shaftQl to rotate ina counter-clockwise d rection. Inasmuch as the latch-arm 30 turns about an axis offset from the axisof shaft 21, it follows that in'opening the 'valvethe tooth35 and the complemental surface 36 will travel along arcs of different rad i to a common point of intersection where latching maybe effected.

At this point the toot-11,35 falls into the notch 36 and the valve is held open. To close the valve the handle 32 is depressed to lower the latch-arm 30 until the tooth35 clears the notch36', whereupon the shaft 21 is free to turn under the action of the.counter-weight tolower the valve into closed position.

7 ..While it is preferred to efilect latching by using a tooth and notch oftheform shown, it will be obvious that the collar 3 land the latch-arm'80 could be provlded with numerous forms of complemental surfaces adapted In combination: a gravity seated valve;

a seat for the valve a pivotally, mounted;

leverfor raising the valve; means operatively connecting said valve and lever; a

latch-arm pivotally mounted to turn about an, axis offset from the axis of the lever pivot; and a member movable with the lever complementary to a portion of the latch-arm adapted to-ieleasably engagesaid portion, V whenthe lever is moved to open thexvalve, V

to hold the valve open. 2. In combination; a valve; a seat for the valve,' a' pivotally mounted lever for raise ing the valve;means operatively connecting said valve and lever; means for yielding'ly holding the lever in position to seat the valve; alatch-arm pivotally mounted to turn: aboutan axis offset from the axis of i the lever pivot; and a member movable" with the lever complementaryto a portionof the latcharm adapted to-releasablyengage said portion, when the lever is moved to open the valve, to hold the valve open.

3. In combination: a gravity seated valve;

a seat for the valve; a pivotally mounted lever for raising the valve; means operatively connecting said'valve and lever; a latch-arm pivotally V mounted. to. turn about an axis offset fromzthe'axis-"of'the lever pivot, said latch-arm beingmovable by movement of the lever; and a 'member movable-with the lever eomplementaryto a portion of thei latch-arm adapted to releasably. v

engage said portion, when the lever is moved to. open the valve, to hold the valve open. 4. In combination: a gravity seated: valve a seat for the valve; a pivotallyl mounted lever for raising the valve; means operaively connecting said valve and lever; a

latch-arm pivotally mounted tq tur no about. an axis offset from the axis of the lever pivot;

ios

means for yieldingly holding theflatch arm 1n position to he moved bythe-lever; and a member movable with thelever-comple'mentary to a portion of the" latch-arm adapted to releasably engage said portion, when the lever 1s moved to open thevvalve, to hold the valve open.

5. In combination: agravity seated valve; a seat for the valve;a pivotally mounted lever for raising theovalve; means operatively connecting said valve and lever; a

latch-arm pivotallymounted to turn about i an axis ofiset from the axisof the lever pivot;

and a member movable withthe' lever complementary to a; portion. of the latch-arm adapted torreleasably engage said portion,

when thelever is moved to open the valve,

to hold the valve open, said members adapt-' ed to be engaged, by movement of rthe latch arm,to permit closing of the valve.

6. Valve mechanism comprising, in combination: :a valve; a seat for the valve; a

shaft provided with an arm for raising and lowering the valve; a lever for turningssaid 77aeos shaft; means for yieldingly holding the lever in position to seat the valve; a tooth vided with an arm for raising and lowering said valve; a lever mounted on said shaft, said lever being operable toturn the shaft to raise and lower the valve; a tooth extending from said shaft and mounted to turn with said lever; and a latch-arm pivotally mounted to turn about an axis offset from the axis of said shaft, said latch-arm being provided with a notch adapted to engage said tooth to hold the valve open.

8. In a device of the character set forth: a chamber having an outlet in its bottom; a valve for closing said outlet; a shaft journaled in the walls of said chamber and pro vided with an arm for raising and lowering said valve; a lever mounted on said shaft, said lever being operable to turn the shaft to raise and lower the valve; means for yieldingly holding the lever in position to close said outlet; a tooth extending from said shaft and mounted to turn with said lever; and a latch-arm pivotally mounted to turn about an axis offset from the axis of said shaft, said latch-arm being provided with a notch adapted to e11- gage said tooth to hold the valve open.

9. In adevice of the character set forth; a chamber having an outlet in its bottom; a valve for closing said outlet; a shaft journaled in the walls of said chamber and provided with an arm for raising and lowering said valve; a lever mounted on said shaft, said lever being operable to turn the shaft to raise and lower the valve; a tooth extending from said shaft and mounted to turn with said lever; a latch-arm pivotally mounted to turn about an axis offset from the axis of said shaft, said latch-arm being provided with a notch adapted to engage said tooth to hold the valve open; and means for yieldingly holding the latch arm in position to be moved by said lever.

In witness that I claim the foregoing I have hereunto subscribed my name this 10th day of October, 1929.

JOSEPH MARTIN.

CERTIFICATE OF CORRECTION.

Patent No. 1,775,908. Granted September 16, 1930, to

JOSEPH MARTIN.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, line 125, claim 5, for the word "engaged" read disengaged; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 21st day of October, A. D. 1930.

M. J. Moore, (Seal) Acting Commissioner of Patents.