US715975A - Controller for electric motors. - Google Patents

Controller for electric motors. Download PDF

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Publication number
US715975A
US715975A US7051701A US1901070517A US715975A US 715975 A US715975 A US 715975A US 7051701 A US7051701 A US 7051701A US 1901070517 A US1901070517 A US 1901070517A US 715975 A US715975 A US 715975A
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United States
Prior art keywords
controller
spring
cylinder
electric motors
pawl
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Expired - Lifetime
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US7051701A
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Eugene R Carichoff
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/60—Angularly-movable actuating part carrying no contacts
    • H01H19/62—Contacts actuated by radial cams
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1503—Rotary to intermittent unidirectional motion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/211—Eccentric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2133—Pawls and ratchets
    • Y10T74/2136—Pivoted pawls

Definitions

  • the present invention relates to controllers for electric motors, and more especially to the means for intermittently driving the controller-cylinder.
  • the iixed drive of a cylinder to secure the desired result requires a rate of speed which permits contact to be .made or broken slowly proves unsatisfactory on account of burning due to poor contact and arcing due to slow break.
  • Figure l is a perspective View of a controller for electric motors, parts being broken away and omitted and showing my invention applied thereto; and Fig. 2 is a detail view of the notched wheel and pawl and correlated parts.
  • the controller-casing A is provided with bearings for the shaft B of the controller drum or cylinder C, which is provided with the stepped-Off contacts d on its periphery, that make or break contact with the spring contact fingers or brushes d', xed to the casing in the usual manner.
  • the shaft B is sufficiently extended so as to carry the notched wheel E, into the notches e of which the antifrictionroller f on the free end of the pawl F takes.
  • a spring f acts on the pawl, tending to move it into engagement with the notched wheel, the effect being that a variable opposition to the rotation of the drum is produced, the
  • Pilotmotor G transmits by a worm g on its shaft g and a gear-wheel g2 rotary motion to a suitably-supported shaft H, the axis of which is in line with that of shaft'B.
  • Shaft H carries a crank 7i, the end of which extends parallel with the shafts and by means of a helical torsion-spring I is caused to be ,centered, so to speak, as that normally it lies midway be* tween abutments formed by pinsjj, locatedon that face of the notched wheel which is presented toward Vthe crank.
  • the coils of said spring are placed over the projecting end ofshaft B, while the ends of the spring are bent out so as to extend approximately parallel with each other in the same direction, one end@ ⁇ of said spring being disposed on one side of an abutment or stop formed by fixed pin j2, located midway of and preferably in the same plane as the abutments or pinsjj, while the other end t" of the spring is disposed on the other side of pin jz.
  • pinj2 is located between the ends of the spring, which lie in contact with oppositesides of said pin.
  • the spring is coiled or placed under stress as the pilot-motor revolves until an abutmentj orj' is reached, according to whether the spring end c' o r t" is advanced by the crank h, whereupon a positive movement is given to the controller-cylinder, rotating it until the force of the spring, still under stress, is greater than the retarding action of the pawl, now at its minimum, when the controller-cylinder is thrown by the spring, due to the pressure of the spring end i or c" on the center stop or abutment/f2, until stopped by the pawl at the next point of maximum retardation.
  • The4 cylinder will have thus been caused t0 advance more rap- IOO idly than the crank h of the pilot-motor, and the spring then becomes neutral.
  • the pilotmotor continues to advance the described action is repeated once for each notch e, securing 'an intermittent movement oi' the controller-cylinder, with a uniform motion of the pilotmotor.
  • the pressure of the pawl may be varied, and when properly adj usted to the strength of the driving-spring it is impossible to stop the controller-cylinder at any point giving other than full contact or full open circuit to any brush.
  • a controller for electric motors the combination with the controller-cylinder, and driving means for imparting motion thereto, of a notched wheel and spring-pawl for intermittently and yieldingly retarding the rotation of the cylinder, and a torsion-spring for transmitting in either direction to the cylinder quicker impulses of motion than those given by the driving means, a portion of the driving means lying normally between and adapted to engage either end of the spring to yplace it under tension; substantially as described.
  • a controller for electric motors the combination, with the controller-cylinderprovided with three abutments on a portion thereon, and driving means for imparting positive motion to the cylinder, of means for intermittently retarding the rotation of the controller-cylinder, and a spring the' ends of Which normally rest against the middle abutment and receive between them a portion of the driving means so as to center the same, while said ends may be moved against the other abutments, whereby quicker impulses of motion, in either direction, may be imparted to the controller-cylinder than those given by the positively-acting driving means, substantially as described.
  • a controller for electric motors the com bination,with the controller-cylinder provided with three abutments on a portion thereof, and driving means for imparting positive motion to the cylinder, of means for intermittently retarding the rotation of the cont-roller cylinder, and a torsion spring coiled around the shaft of the controller-cylinder for imparting quicker impulses of motion to the same than those given by said driving means, the ends of said spring normally resting against the middle abutment and receiving between them a portion of the driving means so as to center the same, which said ends may be moved against the other abutments, substantially as described.
  • a controller for electric motors the combination,with the controller-cylinder, and driving means for imparting positive motion thereto, of means for intermittently retarding the rotation of the controller-cylinder, and a spring the ends of which both bear against a portion on the controller-cylinder, and thereby neutralize the effect of the spring when the parts are at rest, a portion of such driving means being arranged to act on either end of said spring, and permit it to exert its full force, when the retarding influence is overcome, substantially as described.

Description

Patented Dec. I6, |902.
l E. 3. cAlcHoFF. CONTROLLER FOR ELECTRIC MOTORS.
(Applicafian med Aug. 1, 1901.)
(No ModeL) lNVEN-'TOR WITNESS-ES 5o maximum opposition being at the desired 'is impracticable, whereas any method which tures of construction and combination of parts UNITED STATES ATENT OEEIcE.
EUGENE R. CARICHOFF, OF EAST ORANGE, NEW JERSEY.
CONTROLLER FOR ELECTRIC MOTORS.
SPECIFICATION forming part of Letters Patent No. 715,975, dated December 16, 1902.
Application iilefl August 1, 1901.
To a/ZZ whom t may concern.-
Beit known that I, EUGENE R. OAEICHOEE, a citizen of the United States of America, and a resident of East Orange, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Oontrollers for Electric Motors, of which the following is a specification.
The present invention relates to controllers for electric motors, and more especially to the means for intermittently driving the controller-cylinder.
It is very desirable in making contact with fixed brushes by means of a controller-cylinder to approach and make contact with both certainty and rapidity.
It is the object of this invention to secure such advantage.
The iixed drive of a cylinder to secure the desired result requires a rate of speed which permits contact to be .made or broken slowly proves unsatisfactory on account of burning due to poor contact and arcing due to slow break.
For the purpose of securing the desired results my invention consists of certain feato be hereinefter described and then claimed.
In the accompanying drawings, Figure lis a perspective View of a controller for electric motors, parts being broken away and omitted and showing my invention applied thereto; and Fig. 2 is a detail view of the notched wheel and pawl and correlated parts.
The controller-casing A is provided with bearings for the shaft B of the controller drum or cylinder C, which is provided with the stepped-Off contacts d on its periphery, that make or break contact with the spring contact fingers or brushes d', xed to the casing in the usual manner. The shaft B is sufficiently extended so as to carry the notched wheel E, into the notches e of which the antifrictionroller f on the free end of the pawl F takes. A spring f acts on the pawl, tending to move it into engagement with the notched wheel, the effect being that a variable opposition to the rotation of the drum is produced, the
points of contact-that is, where the pawl takes in the notches truly-and the minimum Serial No. 70,517. (No model.)
being intermediate between these points, or, in other words, when the pawl is moving over the teeth formed between the notches. Pilotmotor G transmits by a worm g on its shaft g and a gear-wheel g2 rotary motion to a suitably-supported shaft H, the axis of which is in line with that of shaft'B. Shaft H carries a crank 7i, the end of which extends parallel with the shafts and by means of a helical torsion-spring I is caused to be ,centered, so to speak, as that normally it lies midway be* tween abutments formed by pinsjj, locatedon that face of the notched wheel which is presented toward Vthe crank. To this end, therefore, the coils of said spring are placed over the projecting end ofshaft B, while the ends of the spring are bent out so as to extend approximately parallel with each other in the same direction, one end@` of said spring being disposed on one side of an abutment or stop formed by fixed pin j2, located midway of and preferably in the same plane as the abutments or pinsjj, while the other end t" of the spring is disposed on the other side of pin jz. The result is that pinj2 is located between the ends of the spring, which lie in contact with oppositesides of said pin. Spring ends 'L' t" protrude beyond the pin jg sufficiently so that the pin of crank 7i, may be positioned between them and whereby the crank is normally held centrally between the abutments The action is as follows: The rotary force of the pilot-motor is transmitted to the controller-cylinder through the spring I, which moves under torsion between the abutments jj'. Owing to the retarding effect of the pawl E in a notch of wheel E, the spring is coiled or placed under stress as the pilot-motor revolves until an abutmentj orj' is reached, according to whether the spring end c' o r t" is advanced by the crank h, whereupon a positive movement is given to the controller-cylinder, rotating it until the force of the spring, still under stress, is greater than the retarding action of the pawl, now at its minimum, when the controller-cylinder is thrown by the spring, due to the pressure of the spring end i or c" on the center stop or abutment/f2, until stopped by the pawl at the next point of maximum retardation. The4 cylinder will have thus been caused t0 advance more rap- IOO idly than the crank h of the pilot-motor, and the spring then becomes neutral. As the pilotmotor continues to advance the described action is repeated once for each notch e, securing 'an intermittent movement oi' the controller-cylinder, with a uniform motion of the pilotmotor. The pressure of the pawl may be varied, and when properly adj usted to the strength of the driving-spring it is impossible to stop the controller-cylinder at any point giving other than full contact or full open circuit to any brush.
It will be seen that by the described intermittent drive the contacts are made with certainty and quickness.
That I claim as new, and desire to secure by Letters Patent, is-
l. In a controller for electric motors, the combination with the controller-cylinder, and driving means for imparting motion thereto, of a notched wheel and spring-pawl for intermittently and yieldingly retarding the rotation of the cylinder, and a torsion-spring for transmitting in either direction to the cylinder quicker impulses of motion than those given by the driving means, a portion of the driving means lying normally between and adapted to engage either end of the spring to yplace it under tension; substantially as described.
2. In a controller for electric motors, the combiuation,with the controller-cylinder, the pilot-motor, and a shaft geared with that of the pilot-motor and provided with a drivingcrank, of means for intermittently retarding the rotation of the controller-cylinder, and a torsion-spring coiled around the shaft of the controller'cylinder for im parting quicker impulses of motion to the same than those given by said driving-crank, such spring being set for action by the operation of said crank on one end thereof and, when permitted to exert its force, acting, by its other end to throw the controller-cylinder, substantially as described.
3. In a controller for electric motors, the combination, with the controller-cylinderprovided with three abutments on a portion thereon, and driving means for imparting positive motion to the cylinder, of means for intermittently retarding the rotation of the controller-cylinder, and a spring the' ends of Which normally rest against the middle abutment and receive between them a portion of the driving means so as to center the same, while said ends may be moved against the other abutments, whereby quicker impulses of motion, in either direction, may be imparted to the controller-cylinder than those given by the positively-acting driving means, substantially as described.
4:. In a controller for electric motors, the com bination,with the controller-cylinder provided with three abutments on a portion thereof, and driving means for imparting positive motion to the cylinder, of means for intermittently retarding the rotation of the cont-roller cylinder, and a torsion spring coiled around the shaft of the controller-cylinder for imparting quicker impulses of motion to the same than those given by said driving means, the ends of said spring normally resting against the middle abutment and receiving between them a portion of the driving means so as to center the same, which said ends may be moved against the other abutments, substantially as described.
5. In a controller for electric motors, the combination,with the controller-cylinder, and driving means for imparting positive motion thereto, of means for intermittently retarding the rotation of the controller-cylinder, and a spring the ends of which both bear against a portion on the controller-cylinder, and thereby neutralize the effect of the spring when the parts are at rest, a portion of such driving means being arranged to act on either end of said spring, and permit it to exert its full force, when the retarding influence is overcome, substantially as described.
Signed by me in New York city the 31st day of July, 1901.
EUGENE R. CARlCI-IOFF. 1Witnesses:
GEO. L. WHEELocK, SAMUEL W. BALOH.
US7051701A 1901-08-01 1901-08-01 Controller for electric motors. Expired - Lifetime US715975A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2441808A (en) * 1946-03-08 1948-05-18 Bell Telephone Labor Inc Remote control mechanism
US2494313A (en) * 1945-12-22 1950-01-10 Trumbull Electric Mfg Co Source transfer switch
US2702877A (en) * 1951-12-05 1955-02-22 Thompson Prod Inc Rotary coaxial switch actuating mechanism
US3142186A (en) * 1961-05-22 1964-07-28 Geolograph Co Cam operated pulsing device
US3302484A (en) * 1964-11-18 1967-02-07 Burroughs Corp Actuating mechanism for multiple position devices
US3464280A (en) * 1966-08-30 1969-09-02 Honda Gijutsu Kenkyusho Kk Operation apparatus for change speed machine
US3757592A (en) * 1970-07-24 1973-09-11 Copal Co Ltd Instantaneous intermittent feeding mechanism
US4256080A (en) * 1978-06-16 1981-03-17 Seach Arden W Cooking grill with lid
CH716764A1 (en) * 2019-11-04 2021-05-14 Favre Laurent Apparatus comprising a mechatronic device comprising a mechanical part for electrical connection / disconnection.

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2494313A (en) * 1945-12-22 1950-01-10 Trumbull Electric Mfg Co Source transfer switch
US2441808A (en) * 1946-03-08 1948-05-18 Bell Telephone Labor Inc Remote control mechanism
US2702877A (en) * 1951-12-05 1955-02-22 Thompson Prod Inc Rotary coaxial switch actuating mechanism
US3142186A (en) * 1961-05-22 1964-07-28 Geolograph Co Cam operated pulsing device
US3302484A (en) * 1964-11-18 1967-02-07 Burroughs Corp Actuating mechanism for multiple position devices
US3464280A (en) * 1966-08-30 1969-09-02 Honda Gijutsu Kenkyusho Kk Operation apparatus for change speed machine
US3757592A (en) * 1970-07-24 1973-09-11 Copal Co Ltd Instantaneous intermittent feeding mechanism
US4256080A (en) * 1978-06-16 1981-03-17 Seach Arden W Cooking grill with lid
CH716764A1 (en) * 2019-11-04 2021-05-14 Favre Laurent Apparatus comprising a mechatronic device comprising a mechanical part for electrical connection / disconnection.

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