US2941175A - Assemb ly for the control of electrical units - Google Patents

Assemb ly for the control of electrical units Download PDF

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Publication number
US2941175A
US2941175A US750768A US75076858A US2941175A US 2941175 A US2941175 A US 2941175A US 750768 A US750768 A US 750768A US 75076858 A US75076858 A US 75076858A US 2941175 A US2941175 A US 2941175A
Authority
US
United States
Prior art keywords
shaft
assembly
rotor
units
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US750768A
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English (en)
Inventor
Salvatore N Zarrillo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Clarostat Manufacturing Co Inc
Original Assignee
Clarostat Manufacturing Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Clarostat Manufacturing Co Inc filed Critical Clarostat Manufacturing Co Inc
Priority to US750768A priority Critical patent/US2941175A/en
Priority to GB272259A priority patent/GB868210A/en
Application granted granted Critical
Publication of US2941175A publication Critical patent/US2941175A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/16—Adjustable resistors including plural resistive elements
    • H01C10/20—Contact structure or movable resistive elements being ganged

Definitions

  • This invention relates to a structurally and functiona1- ly' improved assembly for the control of electrical units.
  • a structure in which a number of units may be independently controlled or adjusted, or atthe option of the operator, may be controlled or adjusted together and caused to function in unison through the operation of but a single governing unit.
  • Another object is" that of furnishing a structure of this type which will involve relatively few parts, each individually simple and rugged in construction, and such parts being capable of readyassembly to provide a unitary structure-operating over long periods of time with freedorn from all difficulties.
  • Fig. 1 is a side elevation of a control assembly and units associated therewith;
  • Fig. 2 isafrontview thereof
  • Fig. 3- is a transversesectional view in enlarged scale; taken 'along the line 3-3 in the direction of the arrows asindicated 1in:Fig. 2;
  • Fig. 4 is-a sectional plan view of the assembly and unit as shown in Fig. 3 and-takenalong the line 4-4- in the direction of-the arrows as indicated inthelatter figure;
  • Fig. 51 is a fragmentary sectional view showing the parts in a position different. from that illustrated in Figs. 3 and 4;
  • Fig; 6 is azface view ofthe innermost control unit of the assembly; a
  • Fig. 7 is. an. exploded perspective view ofthe clutchstructureas embodiedin'the assembly
  • Fig. 8 is1a side elevationof an alternative assembly
  • thenurnerals .10 and lltindi cate the casings of electrical circuit-controlling units. These may embrace'potentiometers, variable resistances or other desired assemblies.
  • the casings are preferably cup-shaped and have extending from their free edges, tabs Hand 13.
  • the former serve to retain parts .in applied positions with respect to agiven casing.
  • the latter function as guiding and positioning elementsbetween thecasings.
  • the plate 14.0f the rearmost casing 10 which is retained by lugs 12, h-as'extending from itsforward face hook-shaped elements 14'. 4
  • the forward control unit 11 has its open face-closed by a plate 19 generallycorresponding to plate 14, but mounting a bushing or boss 20.
  • a mounting panel (not shown) beingprovided with an opening of a diameter adequate to permit of the passage of the boss,
  • the assembly may be: disposed adjacent Extending forwardly of the bushing 20 are a pair'of.
  • shafts 21 and22 The latter is hollow and receives with in. its bore the; rear portion of: shaft 21; that shaft ex tending both forwardly and. rearwardly of the shaft 2 2.
  • the: face of.'*thatshaft is formed with grooves adjacentthe forward and rear surface'sof the. bushing or boss.20. Each: of' these grooves. receives a retaining ring of, for example; the- G-type retainingring.designated by the numeral. 23111 the figures and seen clearly in Fig. 3, which bears against the. adjacent faceof. the:- bushing.
  • Shaft 22 extends within;
  • Shaft 21 extends casing 11. and terminates therein. through. that; casing; into the casing 10. Bothsliafts 21' and'22 canrotate withxrespect tocasings 10:and 1 1- and each. other. Also, shaft 21 can be shifted axially of shaft 22 and during such shifting be slidably supported" by the bore face of the latter which is not axially shift-. able.-
  • Rotors are provided'. by preferably employing a plate 25. of insulating material within casing 11: and a plate 26- of. slightly different configuration as shown in the figures-within casing 10. Mounted upon each of these'plates is-acontact spring assembly including a disk whichhas its edge 27 folded aroundrtheextended portion of its respective.”
  • the opposite ends of the resistance 24 are preferably connected one to each. of" terminals- 16 and 18.
  • The'cent-ralterminal member 17 may be extended,
  • One or both 20f the. rotors may have associated with it a .stop. structure, as is usual in assemblies of this nature. Conveniently, that'structure'embraces a plate 30 fixedly securedtoshaft-22 and presenting an angular. end por tion*31.' Thelatter'will cooperate with a fixed projecting portion(notshown) to limit th'eturning of ihBzIOtOI.
  • the rear end of shaft 21 is preferably flattened, as indicated at 33 in Fig. 7.
  • the rotor 26 is provided with a. bore 34 which has a configuration corresponding to flattened portion 33. Therefore, flattened portion 33 of the shaft maybe received within that bore, and the length of the flattened portion is such that within the limits of axial movement of shaft 21, disengagement will not occur between the end portion 33 thereof and the surface of bore 34. Accordingly, no relative turning of these parts will be possible. However, relative axial movements thereof can occur. Incident to such movements, a clutching or interengagement of the elements results such that they may either be rotated independently of each other or be turned in unison.
  • the wall of the groove toward the outer end of that shaft is preferably contoured as at 36 to furnish a camming portion.
  • a spring clutch is furnished by providing a pair of opposed resilient arms 37 extending inwardly toward each other and preferably terminating in outwardly flared lips 38, as in Fig. 7.
  • the inward zones of the arms, as at 39, furnish engaging portions. Under the normal resiliency of these arms, those engaging portions are spaced a distance less than the maximum diameter of shaft 21. However, they are spaced a greater distance than the diameter of the base of groove 35.
  • These arms are conveniently integral with each other and extend from a mounting ring 40 conveniently formed with notches 41 in its inner edge.
  • the volume of each amplifier may be precisely controlled and established. Thereupon, the over-all volume may be increased or decreased to furnish In the case of a two- V a combined bass and treble control capable of individual adjustment.
  • second panel or supporting structure 45 is provided to the rear of and spaced from unit 43.
  • a unit 46 is disposed corresponding. to. the earlier unit 10-.
  • Both of the units are furnished with bushings or boss portions conveniently projecting through openings in the mountings and receiving nuts (not shown) to maintain them axially in alignment with each other.
  • the interior or contained mechanism of units 43 and 46 may correspond identically with the parts as heretofore described.
  • the rotor of unit 43 is controlled by a hollow shaft 48.
  • the latter mounts a suitable actuating element, such as a knob (not shown).
  • Conveniently extending from the rear end of shaft 48 is a clutch spring 50 corresponding to spring 37.
  • a relatively long shaft 49 ex-- tends slidably through the bore of shaft 48 and is provided with a groove 51 within which the ends of spring 50 may lie when the parts are in one position. Otherwise, the spring ends will bear against the large diameter face of shaft 49, as shown in Fig. 8.
  • the length of the shaft is such that it bridges the space between panels 44 and 45 and extends into unit 46.
  • zone it is provided with a non-circular portion 52 corresponding to part 33 of shaft 21.
  • the rotor 53 of unit 46 is-furnished with a socket or bore contoured to correspond 'to the rear end portion 52 of shaft 49. Therefore, this shaft is slidably but non-rotatably received within the rotor.
  • an assembly of the type shown in Figs. 8 and 9 may have one of its components, such as 43, initially installed as part of an apparatus. That component, when properly connected, will function in an entirely satisfactory manner by simply turning shaft 48. Subsequently, and in a more complex assembly, unit 46 may be installed. That unit will include shaft 49. In such installation, unit 46 will be properly vdisposed with respect to its mounting 45. Shaft 49 will be introduced through the bore of shaft 48 and will have its rear portion received within the socket or bore of'rotor 53.
  • a second control such as, for example, a knob, will be mounted on the outer end of shaft 49.
  • spring clutch 50 coupled to shaft 48 will bear against the surface of shaft 49, so that a turning of either one of the shafts will result in a simultaneous rotation of both of the control elements of units 43 and 46.
  • shaft 48 is shifted to the position shown in dotted lines,-then the ends of spring arms 50 will lie within the area of groove 51. In that position, a turning of shaft 48 will have no effect on shaft 49.
  • the latter is turned, by means of a knob or similar actuating element, it will not affect the position of shaft 49.
  • the two shafts may therefore be rotated independently of each other to similarly control units 43 and 46. However, by simply axially shifting shaft 49, these units will be coupled for synchronous movement.
  • the ends of the clutch spring bearing against the rear surface defining groove 51 will prevent a withdrawal of that shaft beyond a proper position.
  • connection between the inner shaft and its associated rotor consists of a non-circular portion of said inner shaft and the rotor being formed with a correspondingly contoured bore slidably receiving such non-circular portion.
  • a control unit for use in an electrical circuit assembly comprising in combination a bushing, a hollow circular shaft journaled within said bushing, a second circular shaft within the hollow of said hollow circular shaft concentric with the hollow shaft and formed to rotate independently of said hollow shaft and undergo limited relative axial movements thereof, a rotor rigidly connected with said first shaft, a second rotor, a resilient spring attached at one end to said rotor, an engaging portion of said spring, a flattened end portion of said second shaft, a bore portion *of said second rotor having a configuration corresponding to said flattened end portion and receiving said flattened end portion, the axial length of said flattened end portion being such that within the limits of axial movement of said second shaft disengagement would not occur between said flattened end portion and the bore portion, a groove in said second shaft, a first axial position of said second shaft, a second axial position of said second shaft, said engaging portion of said spring embracing the periphery of said second shaft in its first axial position and being disposed

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Adjustable Resistors (AREA)
  • Mechanical Operated Clutches (AREA)
US750768A 1958-07-24 1958-07-24 Assemb ly for the control of electrical units Expired - Lifetime US2941175A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US750768A US2941175A (en) 1958-07-24 1958-07-24 Assemb ly for the control of electrical units
GB272259A GB868210A (enrdf_load_stackoverflow) 1958-07-24 1959-01-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US750768A US2941175A (en) 1958-07-24 1958-07-24 Assemb ly for the control of electrical units

Publications (1)

Publication Number Publication Date
US2941175A true US2941175A (en) 1960-06-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
US750768A Expired - Lifetime US2941175A (en) 1958-07-24 1958-07-24 Assemb ly for the control of electrical units

Country Status (2)

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US (1) US2941175A (enrdf_load_stackoverflow)
GB (1) GB868210A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3267749A (en) * 1963-12-09 1966-08-23 Northern Electric Co Ganged control with variable angular difference
US3373393A (en) * 1966-08-11 1968-03-12 Mallory & Co Inc P R Variable resistor utilizing novel control system
US3697921A (en) * 1971-10-21 1972-10-10 Electrohome Ltd Dual control mechanism
US3747043A (en) * 1970-09-16 1973-07-17 Cts Corp Tandem electrical control
US3913059A (en) * 1973-08-20 1975-10-14 Matsushita Electric Ind Co Ltd Variable resistor having front and back stages operated by concentric shafts coupled in rotary operation by friction through a spring
JPS5382591U (enrdf_load_stackoverflow) * 1976-12-10 1978-07-08
US4359711A (en) * 1980-06-23 1982-11-16 Alps Electric Co., Ltd. Rotary variable resistor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1871876A (en) * 1929-12-21 1932-08-16 Charles J Brehany One knob control for radio receiving sets
US2650270A (en) * 1950-09-26 1953-08-25 Clarostat Mfg Co Inc Control
US2868967A (en) * 1956-06-15 1959-01-13 Admiral Corp Remote control tuner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1871876A (en) * 1929-12-21 1932-08-16 Charles J Brehany One knob control for radio receiving sets
US2650270A (en) * 1950-09-26 1953-08-25 Clarostat Mfg Co Inc Control
US2868967A (en) * 1956-06-15 1959-01-13 Admiral Corp Remote control tuner

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3267749A (en) * 1963-12-09 1966-08-23 Northern Electric Co Ganged control with variable angular difference
US3373393A (en) * 1966-08-11 1968-03-12 Mallory & Co Inc P R Variable resistor utilizing novel control system
US3747043A (en) * 1970-09-16 1973-07-17 Cts Corp Tandem electrical control
US3697921A (en) * 1971-10-21 1972-10-10 Electrohome Ltd Dual control mechanism
US3913059A (en) * 1973-08-20 1975-10-14 Matsushita Electric Ind Co Ltd Variable resistor having front and back stages operated by concentric shafts coupled in rotary operation by friction through a spring
JPS5382591U (enrdf_load_stackoverflow) * 1976-12-10 1978-07-08
US4359711A (en) * 1980-06-23 1982-11-16 Alps Electric Co., Ltd. Rotary variable resistor

Also Published As

Publication number Publication date
GB868210A (enrdf_load_stackoverflow) 1961-05-17

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