US2672534A - Motor-driven machine - Google Patents

Motor-driven machine Download PDF

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Publication number
US2672534A
US2672534A US133552A US13355249A US2672534A US 2672534 A US2672534 A US 2672534A US 133552 A US133552 A US 133552A US 13355249 A US13355249 A US 13355249A US 2672534 A US2672534 A US 2672534A
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US
United States
Prior art keywords
lever
catch
active
movable
motor
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
US133552A
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English (en)
Inventor
Faith-Eil Lars Johan
Hansson Erik Oskar Helge
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.)
Electrolux AB
Original Assignee
Electrolux AB
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
Priority to GB62115D priority Critical patent/GB62115A/en
Application filed by Electrolux AB filed Critical Electrolux AB
Priority to US133552A priority patent/US2672534A/en
Application granted granted Critical
Publication of US2672534A publication Critical patent/US2672534A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/06—Switches operated by change of speed
    • H01H35/10—Centrifugal switches
    • 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
    • Y10T74/11—Tripping mechanism
    • Y10T74/111—Speed controlled

Definitions

  • Thepresent' invention relates vto motor' driven machinery, and more particularly tomachinery hav-ingan electric motor driveand-automatic provisions for quickly interrupting the electric current upon overload of the-machinery.
  • This application is a division of our application Serial No. 599,934led June 16, 194.5J which has :become abandoned.
  • Fig. l is a sectional view, taken on the line I-I of Fig..2, ofthe lower portion of a mixing machine for kitchen use illustrating an embodiment of the invention
  • Fig: 2 is ya plan view of the machine, partly in sectionon line II-II of Fig. 1;
  • Figs.' 3to 5 are elevation and sectional views, respectively, showing details of the machine in Figs. 1 and 2 onv an enlargedscale.
  • Figs'. 1 and reference ⁇ character I designates .generally the housing and' II the base platef of" the mixing machine, the elec- 2 tric motor andigearing ofk whicharedesignated by I2 andIS, respectively.
  • Two tools ofthe-machine, agcontainer and an agitator, are designatedby ⁇ l4 and I5.
  • IIi-designat'esfthe driving belt of the machine, I'I-the motori'pulley and I8 the pulley ofthe gearing.
  • a centrifugal relay which is adapted to interrupt the electric current ofthe motor I2 upon overload of themachine; applied to the pulley I8.
  • This'relay comprises vtwo governor weights symmetrically pivoted Within the pulley on pins I9. Whenn the pulley rotates with an incerasing speed the'weights 20, ⁇ due to increase 'in centrifugal force,v turn or pivotabout the pins I9' to a position corresponding to the speed.
  • a sleeve 22 which is slidably mounted on the hub of the pulley, ispressed inwardly into the pulley and compresses a spring 23 which'tendsftopress the sleeve inwardly (upward in-Fig. 5).
  • the sleevek 22 moves outwardly and engages a lever 25, which in turn coacts with the control mechanism of a switch 24;
  • the lever 25 is pivoted on a pin 26carried by a support 21 in the gear housing.
  • This support also carries the switch-and the control means therefor.
  • the switch 24' is a toggle switch, the .lever 28'of which isy arranged to be actuated'by an angle lever 30 carried by a pin 29-on the supportZ'II
  • One-end of the angle lever 30 is provided with a handle which projects ⁇ through thev housing I 0.
  • the lower portion of the angle lever Iliorms-a fork 3l' which guides theleveri 2lir of the switch.
  • Another lever 32 is also carried by thepin-29 and coacts with the angle lever 30.
  • the lever32 is'actuatedby a torsion spring 331a1so ⁇ mounted on the-pin 29, ⁇ such spring tending to turn the lever 32 i'n a clockwise direction to the position illustrated in Fig.'- 1.
  • the langle level- 30 By'means of a small hook 3'4 onthe lever 32, the langle level- 30 ⁇ can-.be actuated to move the lever 2'8l of theswitch to its oiposition (openposition) when'the lever- 32 is moved in thef clockwise direction just men.- tioned.
  • Thelever 32 is arrangedl to coact with the lever 25.
  • the regulator is so adjusted that the electric current will be interrupted before the belt slips off the pulley. In the event the belt should slip off, this indicates that the belt should be exchanged because it cannot transmit power efficiently due to wear.
  • Control mechanism comprising a manually operable part movable between operative and inoperative positions, a catch mov-able toward and from a holding position, a member movable between active and inactive positions, spring means to bias the member to its inactive position, the member being moved to its active position against the tension of the spring means responsive to manual movement of the part 'from its inoperative to its operative position, the catch in the holding position being capable of holding and retaining the member in its active position when moved thereto responsive to manual movement of the part, the spring means being operable to move the member from the active to the inactive position when the catch moves from its holding position, the part, responsive to movement of the member from the active to the inactive position, being moved from its operative to its inoperative position whenever the part at such time is in its operative position, the part also being manually movable from its operative to its inoperative position independently of the member even when the latter is retained in its active position by the catch.
  • Control mechanism for controlling the operation of apparatus comprising a manually operable part movable between operative and inoperative positions, a catch movable between holding and releasing positions, flrst spring means to bias the catch to one of its positions, the catch being adapted to be moved to its other position, against the tension of the first spring means, responsive to a condition affected by operation of the apparatus, a member movable between active and inactive positions, second spring means to bias the member to its inactive position, the member being moved to its active position against the tension of the second spring means responsive to manual movement of the part from its inoperative to its operative position, the catch in the holding position being capable of holding and retaining the member in its active position when moved thereto responsive to manual movement of the part, the second spring means being opera'ble to move the member from the active to the inactive position when the catch moves from its holding to its releasing position, the part, responsive to movement of the member from the active to the inactive position, being moved from its operative to its inoperative position whenever the part at such time is in its
  • Control mechanism for controlling the operation of apparatus having a driven element such mechanism comprising a manually operable part movable between on yand off positions, a member movable between active and inactive L, positions, spring means to bias said member to its inactive position, a movable catch adapted to move toward and from a holding position responsive to predetermined increase and decrease in speed, respectively, of the driven element, the member having a region in the path of movement of the part which is effective to move the member to its active position when the part is moved to its on position, the catch being operable to hold and retain the member in the active position when in its catch holding position, the spring means being operable to move the member from the active to the inactive position when the catch moves from its holding position, the part being contacted by the region of the member when the latter moves from the active to the inactive position to cause the part to move from the on to the off position whenever the part at such time is in its on position, the part also being manually movable from the on'to the off position independently of the member even when the latter is held
  • Control mechanism comprising a manually operable part movable between operative and inoperative positions, a pivotally mounted catch angular-ly movable toward and from a holding position, a member movable between active and inactive positions, said part and member being angularly movable with respect to one another about the same axis, torsional spring means at the vicinity of such axis to bias the member to its inactive position, the member being moved to its active position against the tension of the spring means when the part is manually moved from its inoperative to its operative position, the catch in the holding position being capable of retaining the member in its active position, the spring means being operable to move the member from the active to the inactive position thereof when the catch moves from its holding position, the
  • part upon movement of the member from the active to the inactive position, being actuated to move from its yoperative to its inoperative position whenever the part at such time is in its op erative position, the part also being manualiy movable from its operative to its inoperative position independently of the member even when the latter is retained in its active position by the catch.
  • Control mechanism as set forth in claim 2 in which the catch is angularly movable about a first axis between its holding and releasing positions and. the part and the member are angularly movable with respect to one another about a second axis perpendicular to said first axis, the first spring means to bias the catch to said one position comprising a first torsion spring at the vicinity of said rst axis and the second spring means to bias the member to its inactive position comprising a second torsion spring at the vicinity of said second axis.

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US133552A 1945-06-16 1949-12-17 Motor-driven machine Expired - Lifetime US2672534A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB62115D GB62115A (it) 1945-06-16
US133552A US2672534A (en) 1945-06-16 1949-12-17 Motor-driven machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US59993445A 1945-06-16 1945-06-16
US133552A US2672534A (en) 1945-06-16 1949-12-17 Motor-driven machine

Publications (1)

Publication Number Publication Date
US2672534A true US2672534A (en) 1954-03-16

Family

ID=26831461

Family Applications (1)

Application Number Title Priority Date Filing Date
US133552A Expired - Lifetime US2672534A (en) 1945-06-16 1949-12-17 Motor-driven machine

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US (1) US2672534A (it)
GB (1) GB62115A (it)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US934211A (en) * 1905-03-09 1909-09-14 Bullock Electric Mfg Co Speed-limiting device.
US1044609A (en) * 1911-10-19 1912-11-19 Benjamin G Slaughter Jr Means for controlling electric motors.
US1047557A (en) * 1911-11-23 1912-12-17 Automatic Refrigerating Company Electrical low-speed cut-out.
US1263978A (en) * 1916-06-23 1918-04-23 Oscar Wiederhold Vaporizing-burner.
US1346067A (en) * 1919-07-03 1920-07-06 Touchy Frank Earl Speed-operated circuit-closer
US1558595A (en) * 1924-03-07 1925-10-27 Dauplaise Noah Louis Power-stopping device
US2100710A (en) * 1933-09-19 1937-11-30 Lloyd P Dendel Grain elevator alarm switch
US2472526A (en) * 1945-01-26 1949-06-07 Westinghouse Air Brake Co Underspeed motor protective system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US934211A (en) * 1905-03-09 1909-09-14 Bullock Electric Mfg Co Speed-limiting device.
US1044609A (en) * 1911-10-19 1912-11-19 Benjamin G Slaughter Jr Means for controlling electric motors.
US1047557A (en) * 1911-11-23 1912-12-17 Automatic Refrigerating Company Electrical low-speed cut-out.
US1263978A (en) * 1916-06-23 1918-04-23 Oscar Wiederhold Vaporizing-burner.
US1346067A (en) * 1919-07-03 1920-07-06 Touchy Frank Earl Speed-operated circuit-closer
US1558595A (en) * 1924-03-07 1925-10-27 Dauplaise Noah Louis Power-stopping device
US2100710A (en) * 1933-09-19 1937-11-30 Lloyd P Dendel Grain elevator alarm switch
US2472526A (en) * 1945-01-26 1949-06-07 Westinghouse Air Brake Co Underspeed motor protective system

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Publication number Publication date
GB62115A (it)

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