US2576210A - Device for friction driven drums - Google Patents

Device for friction driven drums Download PDF

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Publication number
US2576210A
US2576210A US662798A US66279846A US2576210A US 2576210 A US2576210 A US 2576210A US 662798 A US662798 A US 662798A US 66279846 A US66279846 A US 66279846A US 2576210 A US2576210 A US 2576210A
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US
United States
Prior art keywords
drum
driving
rollers
roller
ring
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
US662798A
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English (en)
Inventor
Bojner Gustav
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
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Publication of US2576210A publication Critical patent/US2576210A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H13/00—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members
    • F16H13/02—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members without members having orbital 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
    • Y10T74/19023—Plural power paths to and/or from gearing
    • Y10T74/19042—Friction-type gearing

Definitions

  • the present invention relates to a device for those horizontally mounted, possibly more or less inclined rotary drums, furnaces, containers and the like, to which the driving power is transmitted by friction from driving rollers which at the same time wholly or partly support the drum etc.
  • Figs. 1 and 2 show diagrammatically an end view and a side view respectively of a rotary drum fitted with a drive device accordin to the present invention.
  • Fig. 3 shows diagrammatically another embodiment of the drive device in end view.
  • two or more driving rollers are provided each with its individual drive motor, 1. e. two or more electric motors work in parallel each on its individual driving roller. It is then unimportant if one transmission should give somewhat greater speed than the other, the motors equalizing this difference by variation of their own speeds.
  • Such a drive is shown in Fig. 2.
  • the drum is shown supported by a pair of rollers l at each end, see also Fig. 1, each roller of each pair being driven individually by a motor l.
  • the invention may be applied also in the way shown in Fig. 3, viz. in such a way that a motor 4 is connected to each supporting roller I in the roller pair or, in other Words, that two motors drive one and the same driving ring or each driv- 2 ing ring 3' even if there are more than two rings.
  • a drive device including as many electric speed motors as there are'driving rollers, the motors and rollers being connected to each other individually so that each roller has its own driving motor that is driven independently of any other driving motor, the motors varying their own speeds automatically and at certain limits automatically equalizing differences between the ratios of the driving rollers and the ring.
  • a drive for drums and the like by means of toothed wheels, chain wheels or the like may. in many cases be completely avoided.
  • smaller and cheaper motors are required, when more than one motor is used for the drive.
  • a driven element capable of having varying diameters at opposite ends either in manufa'cture Or in operation, driving means for each end of said element for driving said element at a uniform angular velocity comprising motor driven means driving one end at one linear speed and motor driven means driving the opposite end at a different linear speed to thereby impart uniform angular velocity to the driven element.
  • a rotatable drum, spaced friction rings thereon adjacent the opposite ends thereof, said rings capable of having varying diametcrs either in manufacture or in operation of the drum, and driving means for each end of the drum for rotating the same at a uniform angular velocity comprising at least one roller frictionally contacting each ring and separate variable speed motors driving the rollers, the motors operating at different speeds to drive one end of the drum at one linear speed and the opposite end of the drum at a different linear speed to thereby impart uniform angular velocity to the drum.
  • rings may be equalized automatically by the roller, the motors capable of self adjusting their motorsand rollers constituting driving means for the opposite ends of the drum, the said motors operating at different speeds to drive the oppo site ends of the drum at differentlinear speeds to thereby impart uniform angular velocity to the 5.
  • a rotatable drum, spaced friction rings capable of having varying diameters either in manufacture or in operation of the drum disposed adjacent the opposite ends thereof, driving means for each' end of said drum for driving the same at a uniform angular velocity, comprising aroller friotionally' contacting the ring at one end of the drum and driving the drum atone linear speed, a roller frictionally contacting the ring at the opposite end of the drum and driving this end of the drum at a different linear speed to thereby impart the uniform angular velocity to the drum, and an individual variable speed motor driving each roller.
  • a drive for a rotary drum and the like ineluding longitudinally spaced friction rings on the drum and driving means for the drum comprising at least two rollers in frictional engagement with each ring, and a separate electric motor driving each roller whereby differences between the driving ratio of the rollers and the speeds in correspondence to variations of the driving ratios of the rollers and the rings so that the peripheral velocity of each ring is always the same as the peripheral velocity of the roller contacting the same.
  • a rotatable drum for use in hot or cold tumbling or treating of various types of materials having longitudinally spaced roller supported rings and at least 'two rollers contactin each ring, said rollers capable of having varying diameters in manufacture, driving means for at least one pair of rollers to transmit uniform angular velocity from said driving rollers to the ring and the drum despite the irregularities mentioned comprising separate variable speed motors driving the rollers individually, said motors capable of self adjusting their speeds to compensate for difierences between the driving ratios of the rollers and the ring contacting the same.
  • a drive device including as many electric speed motors as there are driving rollers, said motors and rollers being connected to each other individually so that each roller has its own motor and is driven independently of any other driving roller.
  • a drive device including as many. electric speed motors as there are driving'rollers, said motors and rollers being connected to each other individually so that each roller has its own motor and is driven independently of any other driving roller, each motor automatically self-adjusting in speed to automatically equalize any differences between the ratios of the respective rollers and the ring.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US662798A 1945-04-23 1946-04-17 Device for friction driven drums Expired - Lifetime US2576210A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2576210X 1945-04-23

Publications (1)

Publication Number Publication Date
US2576210A true US2576210A (en) 1951-11-27

Family

ID=20426311

Family Applications (1)

Application Number Title Priority Date Filing Date
US662798A Expired - Lifetime US2576210A (en) 1945-04-23 1946-04-17 Device for friction driven drums

Country Status (2)

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US (1) US2576210A (fr)
BE (1) BE578845Q (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2726047A (en) * 1950-05-29 1955-12-06 Monolith Portland Cement Compa Support and drive system for rotary grinding mills
US2853246A (en) * 1953-07-20 1958-09-23 Monolith Portland Cement Compa Mounting for a rotary mill
US4273000A (en) * 1977-08-24 1981-06-16 Bucher-Guyer Ag Drive mechanism for a drum

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US820021A (en) * 1905-08-25 1906-05-08 Buffalo Leather Co Tumbling-drum.
US2322014A (en) * 1941-08-27 1943-06-15 Edmund G Grant Ship propulsion
US2322909A (en) * 1940-12-11 1943-06-29 Prosperity Co Inc Flexible conduit coupling for shellless washers and the like
GB820021A (en) * 1954-09-10 1959-09-16 Trico Products Corp Improvements in windscreen wiper driving mechanisms

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US820021A (en) * 1905-08-25 1906-05-08 Buffalo Leather Co Tumbling-drum.
US2322909A (en) * 1940-12-11 1943-06-29 Prosperity Co Inc Flexible conduit coupling for shellless washers and the like
US2322014A (en) * 1941-08-27 1943-06-15 Edmund G Grant Ship propulsion
GB820021A (en) * 1954-09-10 1959-09-16 Trico Products Corp Improvements in windscreen wiper driving mechanisms

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2726047A (en) * 1950-05-29 1955-12-06 Monolith Portland Cement Compa Support and drive system for rotary grinding mills
US2853246A (en) * 1953-07-20 1958-09-23 Monolith Portland Cement Compa Mounting for a rotary mill
US4273000A (en) * 1977-08-24 1981-06-16 Bucher-Guyer Ag Drive mechanism for a drum

Also Published As

Publication number Publication date
BE578845Q (fr) 1959-09-16

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