US1477216A - Tottn tp - Google Patents

Description

Dec. 11, 1923.

J. F. FAUST AUTOMATIC CONTROL Filed Nov. 18. 1920 2 Sheets-Sheet 1 al tozwzw Dec. 11,1923. 1,477,216

J. F. FAUST AUTOMATI C CONTROL Filed Nov. 18 1920 2 Sheets-Sheet Z W/7/Vf358 v gin-0011101,

( Jmr fi/zasr Patented Dec. 11, 1923.

UNITED STATES PATENT OFFICE.

JOHN F. FAUST, OF WAPAKONETA, OHIO, ASSIGNOR TO NEW WAY LABORATORIES COMPANY, OF GREENVILLE, OHIO, A CORPORATION OF OHIO.

AUTOMATIC CONTROL.

Application filed November 18, 192 Serial No. 425,024.

I wlzom it may concern:

Be'it known that I, JOHN F. FAUST, a citizen of the United States, residing at \Vapakoneta, in the county of Auglaize and State of Ohio, have invented certain new and useful Improvements in an Automatic Control, of which the following is a speci fication.

This invention relates to improvements in means for controlling the operation of machines that draw in a fiuid in a gaseous or vaporous state and at a low pressure, compress it and force it at high pressure into a condenser where the heat of compression is carried away by a flow of cooling water. The compressing machine employed will be operated by an electric motor and the principal object of this invention is to open and close an electric circuit for starting and stopping the motor at proper intervals. Another object of the invention is to properly regulate the flow of the cooling water so that the starting and continued operation of a compressing machine is dependent upon the flow of an adequate suppl of cooling water, that the flow of the coo ing water is automatically so graduated as normally to maintain a pre-determined head or condenser pressureand that in case of an excessive operating pressure, tending to become dangerous, the operation of the machine will be interrupted. A still further object of the invention is to generally improve upon automatic controlling means of this character by providing an apparatus which will be of extremely simple, durable, compact, and inexpensive construction, one which is eflicient and reliable in operation and well adapted to the purpose for which it is designed.

With the above and numerous other objects in view this invention comprises certain novel features of construction,.combination and arrangement of parts as will be hereinafter more fully described.

In the drawing:-

Figure 1 is a view, partially in front elevation and partially in section of the device,

Figure 2 is a top plan view of the device,

Figure 3 is a horizontal longitudinal section through the device,

Figurea is a vertical transverse section through the device, and

Figure 5 is a detailed'view showing the contact members of the switch.

Referrin to the drawin in detail, the reference c aracters 1 an 2 respectively designate the bottom and top plates of a frame or stand which carries the thermostatic mechanism, said plates being rigidly connected by bolts 3 passing through spacer sleeves 4 interposed between peripheral portions of said plates. The upper plate 2 is formed with a centrally located opening 5 normally closed by a removable door 6 so that easy access may be had to the mechanism carried between the lates which will be later described. The be lows 7 and 8 are of the ordinary corrugated expansible tubular construction and form heat responsive elements. The brackets 9 and 10 support the bellows 7 and 8 upon the upper plate 2. The brackets 9 and 10 maybe of any preferred construction and as here shown are the form of tripods having legs 11 depending from arms 12 which radiate from a body 13. This body 13 is rovided with an aperture for receiving t e neck of a bellows. Apertured feet 14 are provided on two legs of each of said brackets so as to receive'bolts 3. An enlarged foot 15 is rovided on the remaining leg and is suitab y bolted to the plate 2. The neck 16 of bellows 7 is adapted to be in communication with a suitable thermostat in a refrigerating system while the neck '17 of the bellows 8 is adapted to be in communication with the compressor of a refrigerating system. The bellows 7 is disposed over an opening 18 and the bellows 8 is disposed over an opening 19 provided in the plate 2. Each bellows is connected to a stem 20 by means of a yoke 21. An upstandin threaded member 22 is mounted on the flower plate 1 and is normally received within the stem. 20 which is of hollow construction. A nut 23 is threadedly mounted upon the upstanding member 22 and a coil spring of the expansion type 24 is disposed around the stem 20 between the yoke 21 and the nut 23 so that the tension of this spring 24 may be regulated by screwing the nut 23 so as to raise or lower same in a well known manner. The springs 24 and their associated parts form means for normally holding the bellows 7 and 8 in a contracted position and it will be readily 24 will be compressed and the yoke portion bifurcated so as to receive 21 moved downwardly.

A needle vave 25 of any preferred construction is suitably mounted between the plates 1 and 2 and has an intlet 26 and an outlet 27 which will be suitably connected or communicated with the refrigerating sys term for controlling the flow of a liquid tlierethrough. The valve stem 28 extends upwardly from the needle valve 25. A pair of depending s aced parallel apertured ears 29 are situate on t e upper plate 2 and carry therebetween the lever 30 by means of a pin 31. One end of this lever 30 is suitably connected to the valve stem 28. The portion of the lever 30 upon the side of the fulcrum opposite to that which is in connection with the valve stem 28 passes through the yoke 21 connected to the bellows 8. This portion of the lever 30 is pivotally connected to the yoke 21 by means of a pin 32. Thus it will be seen that the expansion and contraction of the bellows 8 will open and close and regulate the needle valve 25 through the intermediacy of the lever 30 and the valve stem 28.

A snap switch is suitably situated on the lower plate 1 intermediate its ends and comprises a base 33 having insulating blocks 34 mounted thereon for supporting the contact points 35 which are suitably connected to wires 36 so that the electric circuit passing through the motor for running the compressing machine may be opened and closed in a manner about to be described. The circuit closing means consists of the spring arms 37 which may be lifted in and out of engagement with the contact points 35. A standard 38 situated at one end of the base 33 pivotally supports the arm 39. This arm 39 supports the springs arms 37 through the insulation 40. A second standard 41 is situated at the other end of the base 33 and pivotally supports a second arm 42 which is disposed above the first arm 39. It will be noted that the pivoted end of the arm 39 is the pivoted finger 44. This finger 44 is pivoted to the arm 39 intermediate its ends. A leaf spring 45 is rigidly connected at one end to the arm 42 and is pivotally connected at its other end to the finger 44. Thus it will be seen that when the free end of the finger 44 is below the arm 39 the spring arm 37 will be out of engagement with the contact points 35 whereas when the free end of the finger 44 is a little above the arm 39 the spring arm 37 will be in engagement with the contact points 35 so as to close the circuit therethrough.

bell crank lever 47 is suitably pivoted to the base 33 and one portion thereof is provided with a pair of hook members 48 which pass through an opening in the lever 39 and engage the edge thereof for holding the arm portion ed to enga e the bell crank lever 47 so as to compress t e spring 49 and release the hook member 48 thus allowing the arm 39 to move upwardly.

A suitable pair of spaced parallel apertured cars 50 depend from the plate 2 adjacent the opening 18 and pivotally support the lever 51 through the pin 52. One end of this lever 51 is in pivotal engagement with the yoke 21 through a pin 53 while the other of the lever 51 is connected to the arm 42 intermediate its ends through a link 54. It will be noted that the lever 51 ex tends sufficiently toward the other end of the apparatus so as to terminate a relatively short distance under the lever 30. Thus it will be seen that the'expansion ofthe bellows 7 will cause the switch mechanism just described to be in a closed position through mounted on the base 33 normalzy' the intermediacy of the lever 51 and link 54'.

the lever 30 and thus the distance between the levers 51 and 30 may be regulated. It will be noted that upon a certain expansion of the bellows 8 this inner end of the lever 30 will engage the inner end of the lever 31 so as to force the lever 31 downwardly thus actuating the switch mechanism so as to open the same.

From the fore oing description, taken in connection with t e accompanying drawing, the construction and operation of the appa ratus will be readily understood without a more extended explanation. Obviously, the invention is not limited and restricted to the precise, and exact details of construction as illustrated and described, because it is susceptible of a variety of embodiments, and many minor mechanical changes may be made in such preferred incorporation of the invention without departing from the substance or essence of the invention and without the sacrifice of any of its substantial benefits and advanta es.

Having thus descri ed the invention what is claimed as new is In combination, a frame comprising spaced superimposed plates, a pair of heat responsive elements mounted onthe upper pate, a lever pivotally mounted on the 111% der surface of the upper plate below each heat responsive element so that their inner ends will overlap, means on one lever for In testimon whereof I afiix my signature regulatin the normal distance between the in presence 0 two witnesses. inner en s of the levers, said upper plate provided with an aperture registering with JOHN FAUST' said means so that it may be regulated, and a. Witnesses:

' switch mounted on the lower plate and eon- WM. J. GOUDY,

nected to one of said levers. 5 CARL T. Homes.

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