US1273445A - Means to prevent chattering in valves and the like. - Google Patents

Description

1. c. BECKERLEG.

MEANS TO PREVENT CHATTERING IN VALVES AND THE LIKE. APPLICATION FILED AUG-18.1917.

1 ,27.3,4:45. Patented July 23, 1918.

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JAMES C. BECKERLEG, OF CHICAGO, ILLINOIS.

MEANS TO PREVENT GHATTERING IN VALVES AND THE LIKE.

Specification of Letters Patent.

Patented July 23, 1918.

Application filed August 18, 1917. Serial No. 187,012.

To all whom it may concern:

Be it known that I, JAiuns O. Bnmcnunnc, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Means to Prevent Chattering in Valves and the like, of which the following is a specification.

In various types of valves, faucets, and similar appliances, more especially those of the automatic or self-closing style, great annoyance is sometimes created by reason of the chattering, hammering, or vibrating of the parts, particularly when the valve is almost closed. This is ordinarily occasioned by a rapid vibration of the movable valve member directly toward and from its seatthrough a comparatively limited range ofmovement. The leading aim and prime object of this invention is the avoidance or elimination of these objectionable and destructive features in structures of this general character, but the invention is not limited or restricted to use in connection with valves or like devices.

I. have discovered that if the movable valve member likely to undergo such chattering or pounding is prevented from having a direct movement toward and from its valve-seat, that is, if the valve is so con structed, that for a given valve opening its movement is considerably increased, as by giving it a compound or dual motion, the undesirable hammering is avoided. In other words, if. instead of giving the valve :1 direct right-line motion toward and from its seat, it is caused to have a spiral or helical or similar compound movement, increasing its travel to efi'ect a given or predetermined valve opening, the chattering is done away with.

In order that those skilled in this art may have a full and complete understanding of the structural and functional advantages of a device embodying this invention, I have illustrated such an appliance in the accompanying drawing, which forms a part of this specification, and to which reference should be had in connection with the following detailed description.

The drawing shows one of the novel valves in central section.

Referring to the drawing, it will be observed that the valve-casing 1, has an apertured partition or division wall 2, the opening or port through which accommodates an hammering, poundiw ordinary valve-seat member 3, cooperating with the top flat face of which I provide a valve 5 of disk form having a depending guiding rod 6 slidable through an aperture or bearing 4 in the lower spider portion of the valve-seat member.

The top or upper face of this movable valve is equipped with an extension or stem 7 provided exterior-1y with a double or duplex quick-pitch thread 8 co-acting with similar internal threads 10 in the enlarged extension 9 on the lower end of the spindle 11 which extends out of the valve-casing through a stufling-box 12, its upper end being threaded at 13 and engaging similarlythrcaded nut 14; supported in a yoke 15. Such spindle has at its upper end the usual operating handle or hand-wheel, the turning of which in one direction or the othercauses the upward or downward travel of the spindle and the part 9.

It may be stated that this is an ordinary valve construction of the self-closing type, the weight of the valve 5 effecting the closing action, except for the threaded or spiral connection between the valve and the spindle, which causes the valve, either in opening or closing, to partake of a dual or double movement, in one direction away from or toward the valve-seat and also in a rotary direction. That is to say, in either opening Or closing, the valve has a spiral or helical movement greater in extent than the direct opening or closing movement of the valve with respect to the valve-seat. Expressed otherwise, the rotary movement of the valve is added to or supplemental to its up and down straight line opening or closing movement. This prevents the fluttering or hammering referred to.

In order to permit the valve to close under the action of its own weight without hammer or undue shock, the pitch or slope of the cooperating threads so chosen with reference to the weight of the movable valve part that suflicient friction is imposed on its closing movements to prevent shock or hammer blows, that is, while the valve is free to close, its movement is, nevertheless, governed, controlled, or regulated to ease or cushion its closing action.

It should be clear, therefore, that by this novel and improved style of valve I have been able to prevent or do away with the and chattering, due to pulsations or fluctuations in the flow of the fluid controlled by the valve. When the pressure under the valve disk is, sufficient to raise it 0d of its seat, it has a rotative or dual motion imparted to it, whereby the pulsations eXisting in the flow of fluid tending to create vertical pulsatory effects on the valve when suspended by the flow are broken or counteracted by this dual or compound motion.

The principle made use of in this valve is susceptible of advantageous employment in many relations, but it lends itself especially to use in automatic equalizing stop and check valves and also known as non-return valves. It can beused with benefit on a Whistle valve when used in conjunction with weights, springs, levers, etc. When the whistle valve is released the I boiler pressure is imposed on one side of the valve disk to close it, the atmospheric pressure on the other side, and if released suddenly, it will close with a hammer blow. By the use of such a spiral thread a compound motion can be obtained, and the pitch of the thread can be readily determined so that it will offer suflicient friction to permit it to close without undue shock.

As will be understood by those skilled in this art the invention is not limited and restricted to the precise and exact features I of construction illustrated and described because these may be modified within wide limits without departure from the substance and heart of the invention and without the sacrifice'of any of its substantial benefits and advantages. Obviously, it is quite immaterial on which of the two co-acting elements the male threads are located and on which the companion female threads are positioned. Nor is the invention limited to use in valves, but is adapted for convenient employment on various elements such, for eX- ample, as dash-pots, springs, levers, weights, pistons, etc., where it is desirable to obtain a cushioning or shock absorbing eflect or for the prevention of chattering. The closing of the valve in the present instance need not depend solely and entirely upon the weight of the movable valve part, but this may be supplemented and aided by any approved or convenient means such for example, as a spring. 7

I claim 1. In a device of the character described, the combination of a member constructed to have an automatic reciprocatory operative movement in a right-line direction, and means to give said member a positive supplemental movement in a direction at an angle to and simultaneously with each operativeright-line movement thereof to prevent a pulsating action of said member, substantially as described.

2. In a device of the character described,

the combination of a member constructed to have an automaticreclprocatory operative 'movement in a right-line direction, and

means to give said member during each right-line movement only thereof a positive supplemental movement simultaneously therewith in a direction at an angle to said operative movement to prevent a pulsating action of said member, substantially as de". scribed. I

3. In a device of the character described,

the combination of a member constructed to have an automatic reclprocatory operatlve movement by fluid-pressure in a right-line direction, andm'eans to givesaid member during each right-line movement only thereof a positive supplemental movement simul' taneously with and in a direction at an angle to said operative movement to prevent a pulsating action of saidmember, substantially as described.

4;. In a device of the character described,

member, substantially as described. 5. In a device of the character'described,

the combination o-f'a member automatically movable in a right-line direction, and means to cause said member to have a simultaneous turning movement during such right-line movement only to prevent pulsating actions of said member, said means creating sufficient friction to cushion the action of said member, substantially as'described.

6. In a Valve construction of the character described, the combination of a member having a valve-port and a valve-se' at, a valve automatically operative by reasonof pressures on the opposite sides thereofan'd adapted to cooperate directly with 'said valve-seat to open and close said port and having a normal reciprocatory" right-line opening and closing operative movement,

and means to cause said valve to'have' simultaneous, positive, turning movement during each opening and closing action thereof to prevent a pulsating action of the valve, substantially as described.

7 In a valve construction of the character described, the combination of a member havmg a valve-port and a valve seat, a valve pressures on the-opposite sides thereof and adapted to cooperate directly witlr' said valve-seat to open and close said'port and having a normal reciprocatory rlght-line opening and closing operative 'movement, and means to cause said valve to have asi- -multaneous, positive, turning movementdurmg each right-line opening and closing movement only thereof to prevent a pulsating action of the valve, substantially as described.

8. In a valve-construction of the character described, the combination of a member hav ing a valve-port and a valve-seat, a valve automatically operative by reason of pressures on the opposite sides thereof and adapted to cooperate directly With said valve-seat to open and close said port and having a normal right-line opening and closing operative movement, and means to cause said valve to have a simultaneous positive turning movement during its operative movement only to prevent a pulsating action of the valve, said means being constructed to create sufficient friction to cushion the action of said valve, substantially as described.

JAMES C. BEOKERLEG.

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

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