US3057215A - Intermittent drive - Google Patents

Intermittent drive Download PDF

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Publication number
US3057215A
US3057215A US71355A US7135560A US3057215A US 3057215 A US3057215 A US 3057215A US 71355 A US71355 A US 71355A US 7135560 A US7135560 A US 7135560A US 3057215 A US3057215 A US 3057215A
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United States
Prior art keywords
gear
drive
driven
shaft
intermittent drive
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Expired - Lifetime
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US71355A
Inventor
Alfred W Stewart
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.)
Ulster Dutchess Machine & Tool
Ulster-Dutchess Machine & Tool Co Inc
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Ulster Dutchess Machine & Tool
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Priority to US71355A priority Critical patent/US3057215A/en
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Publication of US3057215A publication Critical patent/US3057215A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/44—Driving mechanisms, i.e. for transmitting driving force to the contacts using Geneva movement
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B13/00—Gearwork
    • G04B13/002—Gearwork where rotation in one direction is changed into a stepping movement
    • 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
    • Y10T74/14—Rotary member or shaft indexing, e.g., tool or work turret
    • Y10T74/1418—Preselected indexed position
    • Y10T74/1424—Sequential
    • Y10T74/1441—Geneva or mutilated gear drive
    • 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
    • Y10T74/1524—Intermittently engaged clutch
    • 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
    • Y10T74/18—Mechanical movements
    • Y10T74/18528—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
    • Y10T74/19—Gearing
    • Y10T74/1987—Rotary bodies
    • Y10T74/19879—Geneva

Definitions

  • This invention relates to an intermittent drive.
  • the invention is directed to an intermittent drive of the Geneva wheel type.
  • Intermittent drives of the Geneva type are used to produce a full or partial rotation of a driven shaft. They are ordinarily used in lightweight apparatus such as in the operation of watches and electric switches or controls. In the known types, the driving and driven shafts cannot be aligned on the same axis.
  • the objects of this invention are to produce a Genevatype drive suitable for apparatus having a large mass as well as for machines of low mass, especially those operating at high speed and light load, and having the driving and driven shafts in axial alignment.
  • this and other objects of the invention are obtained by having aligned driving and driven shafts.
  • An arm fixed to the driving shaft carries a driving pin.
  • An arm extending outwardly of the driven shaft carries a drive wheel or gear.
  • This wheel is adapted to slide around a stationary guide block or sector block having one or more escape notches in the surface thereof.
  • the driving pin moves the gear which, in turn, rotates the driven shaft through the connecting arm until the engagement between the pin and gear is broken when the gear reaches an escape notch. Because of the arms and stationary guide block and aligned shafts, this structure is not only compact but very rugged and can transmit sufficient torque to drive a large mass of machinery.
  • FIGURE 1 is a cross-sectional view through the intermittent drive
  • FIGURE 2 is a cross-sectional view taken on the line 22 of FIGURE 1;
  • FIGURE 3 is a perspective view of the drive
  • FIGURE 4 is a side elevational view of a machine for both typing and punching a card with the card tray in open position and utilizing the intermittent drive of this invention.
  • the driving shaft is driven from motor M.
  • An arm shown as an arm means 12, illustrated as a disc, is fixed to and extends transversely of driving shaft 10.
  • a pin 14 is mounted in a disc adjacent the periphery thereof and extends parallel to shaft 10.
  • the driven shaft 16 extends through machine frame 18 and a stationary guide block 20 is secured to frame 18.
  • Shaft 16 is aligned with shaft 10.
  • An arm 22 is fastened to driven shaft 16 transversely thereof and parallel to disc 12.
  • a gear 24 is rotatably mounted on arm 22.
  • Gear 24 has the form of a Maltese cross. Each tooth has its outer end 26 of concave shape and of the same curvature as the circumference of guide block 20. It is apparent that gear 24 is held against rotation by the contact of a tooth with the stationary guide block 20 until the tooth reaches the escape notch 28 formed in the circumference of block 20.
  • This particular intermittent drive has sufficient torque transmitting properties to drive a relatively large mass of machinery through a single cycle.
  • the friction in the driven machinery is sufficient to cause driven shaft 16 to stop almost instantaneously, whereas the motor M can coast to a stop before pin 14 again contacts gear 24.
  • the operation of the invention is further described with reference to a machine for the simultaneous typing and punching of a card for later use in a punch card machine.
  • a blank card is adapted to be placed in an open tray T, and then the tray is pushed to the right. In this position, the tray lies above a typing mechanism indicated generally at 30 and a punching mechanism indicated generally at 32.
  • the position for the appropriate numeral is achieved by shifting one of the keys K which simultaneously sets both the typing and punching positions by means of the rack and pinion 36.
  • Typing mechanism 30 is driven from a crank shaft, Whereas punching mechanism 32 is driven by a cam. This allows the punching mechanism 32 to function slightly in advance of and separate from the typing mechanism for the purpose of lightening the load on the power drive.
  • Tray T when entering fully closed position, actuates an electric switch 41 to start motor M.
  • the motor turns the driven shaft 16 through one cycle or through about 345 to operate the typing mechanism 30 and the punching mechanism 32.
  • a cam is rotated to operate the lever system 48 which has the dual purpose of operating the bar 50 for returning the keys K to their starting position and for releasing tray T from the catch 52 so that the tray is withdrawn to starting position by means of the spring S.
  • An intermittent drive comprising a rotatable driving shaft, driving arm means fixed transversely of said driving shaft and rotatable therewith, a pin joined to said driving arm means and extending parallel to said driving shaft, a rotatable driven shaft, a stationary circular guide block concentric with said driven shaft and having at least one escape notch in the circumference thereof, a driven arm secured to said driven shaft and extending transversely thereof, a gear rotatably mounted on and carried by said driven arm, said gear having one tooth engageable by said pin to turn said gear and drive said driven arm and said driven shaft, and another tooth slidably contacting the circumference of said block until said another tooth reaches said escape notch to permit rotation of said gear 3 and the breaking of the engagement of said pin with said gear to stop the driving of said driven shaft.
  • each tooth of said gear having its outer end curved to the curvature of said guide block. 5

Description

1962 A. w. STEWART INTERMITTENT DRIVE 2 Sheets-Sheet 1 Filed Nov. 23, 1960 INVENTOR Ayred W Stewart BY W 7 fl I ATTORNEYS Oct. 9, 1962 A. w. STEWART 3,
INTERMITTENT DRIVE Filed Nov. 23, 1960 2 Sheets-Sheet 2 IN VEN TOR A lfred W Ste Wdri,
ATTORNEYS tent 3,657,215 Patented Oct. 9, 1962 3,057,215 INTERWITTENT DRIVE Alfred W. Stewart, High Falls, N.Y., assignor to Ulster- Dutchess Machine & Tool Co., Inc., Rosendale, N.Y., a corporation of New York Filed Nov. 23, 1960, Ser. No. 71,355 Claims. (Cl. 74125.5)
This invention relates to an intermittent drive. In particular, the invention is directed to an intermittent drive of the Geneva wheel type.
Intermittent drives of the Geneva type are used to produce a full or partial rotation of a driven shaft. They are ordinarily used in lightweight apparatus such as in the operation of watches and electric switches or controls. In the known types, the driving and driven shafts cannot be aligned on the same axis.
The objects of this invention are to produce a Genevatype drive suitable for apparatus having a large mass as well as for machines of low mass, especially those operating at high speed and light load, and having the driving and driven shafts in axial alignment.
In general, this and other objects of the invention are obtained by having aligned driving and driven shafts. An arm fixed to the driving shaft carries a driving pin. An arm extending outwardly of the driven shaft carries a drive wheel or gear. This wheel is adapted to slide around a stationary guide block or sector block having one or more escape notches in the surface thereof. The driving pin moves the gear which, in turn, rotates the driven shaft through the connecting arm until the engagement between the pin and gear is broken when the gear reaches an escape notch. Because of the arms and stationary guide block and aligned shafts, this structure is not only compact but very rugged and can transmit sufficient torque to drive a large mass of machinery.
The means by which the objects of the invention are obtained are described more fully with reference to th accompanying drawings, in which:
FIGURE 1 is a cross-sectional view through the intermittent drive;
FIGURE 2 is a cross-sectional view taken on the line 22 of FIGURE 1;
FIGURE 3 is a perspective view of the drive; and
FIGURE 4 is a side elevational view of a machine for both typing and punching a card with the card tray in open position and utilizing the intermittent drive of this invention.
As shown in FIGURES 1 to 3, the driving shaft is driven from motor M. An arm shown as an arm means 12, illustrated as a disc, is fixed to and extends transversely of driving shaft 10. A pin 14 is mounted in a disc adjacent the periphery thereof and extends parallel to shaft 10. The driven shaft 16 extends through machine frame 18 and a stationary guide block 20 is secured to frame 18. Shaft 16 is aligned with shaft 10. An arm 22 is fastened to driven shaft 16 transversely thereof and parallel to disc 12. A gear 24 is rotatably mounted on arm 22. Gear 24 has the form of a Maltese cross. Each tooth has its outer end 26 of concave shape and of the same curvature as the circumference of guide block 20. It is apparent that gear 24 is held against rotation by the contact of a tooth with the stationary guide block 20 until the tooth reaches the escape notch 28 formed in the circumference of block 20.
This particular intermittent drive has sufficient torque transmitting properties to drive a relatively large mass of machinery through a single cycle. When the pin 14 becomes disengaged from gear 24, the friction in the driven machinery is sufficient to cause driven shaft 16 to stop almost instantaneously, whereas the motor M can coast to a stop before pin 14 again contacts gear 24. The operation of the invention is further described with reference to a machine for the simultaneous typing and punching of a card for later use in a punch card machine.
As shown in FIGURE 4, a blank card is adapted to be placed in an open tray T, and then the tray is pushed to the right. In this position, the tray lies above a typing mechanism indicated generally at 30 and a punching mechanism indicated generally at 32. The position for the appropriate numeral is achieved by shifting one of the keys K which simultaneously sets both the typing and punching positions by means of the rack and pinion 36. Typing mechanism 30 is driven from a crank shaft, Whereas punching mechanism 32 is driven by a cam. This allows the punching mechanism 32 to function slightly in advance of and separate from the typing mechanism for the purpose of lightening the load on the power drive. Tray T, when entering fully closed position, actuates an electric switch 41 to start motor M. The motor turns the driven shaft 16 through one cycle or through about 345 to operate the typing mechanism 30 and the punching mechanism 32. At the end of the cycle, a cam is rotated to operate the lever system 48 which has the dual purpose of operating the bar 50 for returning the keys K to their starting position and for releasing tray T from the catch 52 so that the tray is withdrawn to starting position by means of the spring S.
It is apparent that the typing and punching mechanisms are of rather considerable mass and require a rather large torque to drive them. This is made possible by means of the particular drive as shown in FIGURES 1 to 3. The friction in the typing and punching mechanisms is sufficient so as to cause the driven shaft 16 to stop substantially immediately once the drive is broken from motor M. The motor then can coast to a stop through an angle of about 345. Again, the friction in the reduction gears used for the motor M is suificient to stop the motor before the pin 14 again engages gear 24.
Having now described the means by which the objects of the invention are obtained, I claim:
1. An intermittent drive comprising a rotatable driving shaft, driving arm means fixed transversely of said driving shaft and rotatable therewith, a pin joined to said driving arm means and extending parallel to said driving shaft, a rotatable driven shaft, a stationary circular guide block concentric with said driven shaft and having at least one escape notch in the circumference thereof, a driven arm secured to said driven shaft and extending transversely thereof, a gear rotatably mounted on and carried by said driven arm, said gear having one tooth engageable by said pin to turn said gear and drive said driven arm and said driven shaft, and another tooth slidably contacting the circumference of said block until said another tooth reaches said escape notch to permit rotation of said gear 3 and the breaking of the engagement of said pin with said gear to stop the driving of said driven shaft.
2. An intermittent drive as in claim 1, each tooth of said gear having its outer end curved to the curvature of said guide block. 5
3. An intermittent drive as in claim 2, said gear having four teeth.
4. An intermittent drive as in claim 3, said driving shaft being aligned with said driven shaft.
5. An intermittent drive as in claim 4, said driven 10 shaft being journalled in said guide block.
References Cited in the file of this patent UNITED STATES PATENTS Hill June 1, Morton Dec. 7, Mirfield Feb. 23,
FOREIGN PATENTS Austria Oct. 25, Great Britain Oct. 30, Great Britain Oct. 6, France Jan. 26,
US71355A 1960-11-23 1960-11-23 Intermittent drive Expired - Lifetime US3057215A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3133530A (en) * 1962-12-13 1964-05-19 Goodheim Albert Rotary valve and drive mechanism
US3225628A (en) * 1962-02-26 1965-12-28 Warner Lambert Pharmacentical Turntable drive
US3408877A (en) * 1965-10-22 1968-11-05 Hayes Albion Corp Intermittent motion mechanism
US3421380A (en) * 1967-06-07 1969-01-14 Unitek Corp Intermittent motion apparatus
US3434453A (en) * 1965-09-18 1969-03-25 Hottinger Baldwin Mesztechnik Indicating device
US4020707A (en) * 1973-11-23 1977-05-03 Owens-Illinois, Inc. Motion translating apparatus and controls therefor
US5269233A (en) * 1992-10-06 1993-12-14 Johnson Howard A Stoker or particulate conveyor

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT39480B (en) * 1908-06-05 1909-10-25 Priv Suedbahn Ges Kk Drive for railway barriers.
US1342170A (en) * 1919-03-05 1920-06-01 Whitaker Glessner Company Mechanical movement
US1361168A (en) * 1916-12-22 1920-12-07 Pathescope Co Of America Intermittent movement for moving-picture machines
US1574631A (en) * 1922-04-22 1926-02-23 George E Mirfield Method and apparatus for threading metal articles
GB337100A (en) * 1929-08-20 1930-10-30 Barr & Stroud Ltd Improvements in or connected with carry-over mechanisms for drums of step-by-step indicators
GB630144A (en) * 1946-11-11 1949-10-06 Schweiz Ind Ges Rotary intermittent gear
FR1204461A (en) * 1958-04-01 1960-01-26 Lip Timed-action device for triggering a movement at a given instant and its application in particular to triggering control in projectile rockets

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT39480B (en) * 1908-06-05 1909-10-25 Priv Suedbahn Ges Kk Drive for railway barriers.
US1361168A (en) * 1916-12-22 1920-12-07 Pathescope Co Of America Intermittent movement for moving-picture machines
US1342170A (en) * 1919-03-05 1920-06-01 Whitaker Glessner Company Mechanical movement
US1574631A (en) * 1922-04-22 1926-02-23 George E Mirfield Method and apparatus for threading metal articles
GB337100A (en) * 1929-08-20 1930-10-30 Barr & Stroud Ltd Improvements in or connected with carry-over mechanisms for drums of step-by-step indicators
GB630144A (en) * 1946-11-11 1949-10-06 Schweiz Ind Ges Rotary intermittent gear
FR1204461A (en) * 1958-04-01 1960-01-26 Lip Timed-action device for triggering a movement at a given instant and its application in particular to triggering control in projectile rockets

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3225628A (en) * 1962-02-26 1965-12-28 Warner Lambert Pharmacentical Turntable drive
US3133530A (en) * 1962-12-13 1964-05-19 Goodheim Albert Rotary valve and drive mechanism
US3434453A (en) * 1965-09-18 1969-03-25 Hottinger Baldwin Mesztechnik Indicating device
US3408877A (en) * 1965-10-22 1968-11-05 Hayes Albion Corp Intermittent motion mechanism
US3421380A (en) * 1967-06-07 1969-01-14 Unitek Corp Intermittent motion apparatus
US4020707A (en) * 1973-11-23 1977-05-03 Owens-Illinois, Inc. Motion translating apparatus and controls therefor
US5269233A (en) * 1992-10-06 1993-12-14 Johnson Howard A Stoker or particulate conveyor

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