US3353424A - Motor speed controllers - Google Patents

Motor speed controllers Download PDF

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Publication number
US3353424A
US3353424A US490590A US49059065A US3353424A US 3353424 A US3353424 A US 3353424A US 490590 A US490590 A US 490590A US 49059065 A US49059065 A US 49059065A US 3353424 A US3353424 A US 3353424A
Authority
US
United States
Prior art keywords
cover
base
foot
motor speed
controller
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
US490590A
Other languages
English (en)
Inventor
Wesley R Peterson
Albert N Cook
Ronald R Thompson
Alan H Stolpen
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.)
Singer Co
Original Assignee
Singer Co
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 Singer Co filed Critical Singer Co
Priority to US490590A priority Critical patent/US3353424A/en
Priority to DE1563752A priority patent/DE1563752C3/de
Priority to GB42275/66A priority patent/GB1109219A/en
Priority to SE12942/66A priority patent/SE333763B/xx
Priority to CH1382266A priority patent/CH448228A/de
Application granted granted Critical
Publication of US3353424A publication Critical patent/US3353424A/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
    • H01C10/14—Adjustable resistors adjustable by auxiliary driving means
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B69/00—Driving-gear; Control devices
    • D05B69/14—Devices for changing speed or for reversing direction of rotation
    • D05B69/18—Devices for changing speed or for reversing direction of rotation electric, e.g. foot pedals
    • 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
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20888—Pedals

Definitions

  • MOTOR SPEED CONTROLLERS Filed Sept. 27, 1965 2 Sheets-Sheet 2 5" I0 ⁇ A ⁇ I ⁇ INVENTORS WESLEY R. PETERSON 385555 I? T H O JPSON T NESS Fig. 4 ALAN H. STOLPEN mga fiw )n TORNE Y United States Patent 3,353,424 MOTOR SPEED CUNTROLLERS Wesley R. Peterson, Bound Brook, Aihert N. Cook, Madison, Ronald R. Thompson, Pinciremin, and Alan H. Stoipen, Union, N..I., assignors to The Singer Company, New York, N.Y., a corporation of New Jersey Filed Sept. 27, 1965, tier. No. 490,590 1 Claim.
  • a foot-operated motor speed controller has a generally rectangular box base and a cover which fits said base along one of the longer edges in abutting relation therewith but overhangs the base on all the other edges.
  • Hinge means positioned along said abutting edges provide a hinge axis coincident therewith which permits the cover to be rotated about its long dimension through 180 degrees to fully expose the base.
  • the cover is formed with an external top surface which is convexly curved downwardly away from' the top of the hinged edge toward the front edge to provide the minimum vertical dimension along said front edge which also extends in the direction of the longer dimension.
  • the cover forms the actuator for control components located in the base.
  • This invention relates to controllers for controlling the speed of small electric motors such as electric sewing machine motors.
  • controllers are usually foot-operated devices actuated either by a small button or by a pivoted plate element approximating the width of the foot.
  • actuated either by a small button or by a pivoted plate element approximating the width of the foot.
  • a small button or by a pivoted plate element approximating the width of the foot.
  • they require the accurate placement of the foot which is somewhat distracting to the operator whose attention is more importantly demanded by the work at the needle.
  • Another object of this invention is to provide a foot controller having a mimum vertical height along the front edge facing the operator to effect easy engagement of the actuator with the foot in the natural raised toe and pivoted heel position.
  • a further object of this invention is to provide a foot controller in the form of a generally rectangular box base with a hinged actuating cover which overhangs and telescopes with the box and has its long dimension parallel to the hinge axis.
  • a still further object of this invention is to provide a foot controller with a prominently exposed actuator and having simple means and easy assembly for biasing and setting the actuator to an initially adjusted position.
  • FIGS. 1 and 2 are top plan and side elevation views, respectively, of a controller made in accordance with the present invention.
  • FIG. 3 is an enlarged plan view of the controller of FIGS. 1 and 2 with the cover swung away to expose the component parts enclosed therein.
  • FIG. 4 is a longitudinal sectional view taken substantially on line 44 of FIG. 3 with the cover disposed in its normal operating position.
  • FIGS. 5 and 6 are transverse sectional views taken substantially on lines 55 and 6-6, respectively, of FIG. 3 with the cover disposed in its normal operating position.
  • a controller made in accordance with the present invention has a casing comprising a hollow cover or foot pedal 10 pivotally connected along its rear edge to the rear edge of a hollow base 11 by a pair of spaced hinges 12, as shown in FIG. 3.
  • Cover 10 and base 11 are made of a substantially rigid non-conducting material, such as a synthetic resin, and are preferably molded to provide various mounting surfaces, recesses and protuberances, required for installing various components and mechanism for translating movement of cover 10 about the axis 13 of the hinges 12 into resistance variations necessary for motor speed control.
  • the cover 10 is generally rectangular in plan and has its long dimension parallel to the hinge axis 13, which dimension is preferably at least one and one-half times the transverse dimension.
  • the actual length along the hinge axis may be conveniently of the order of twice the width of a normal shoe. This aspect ratio provides convenience in handling and considerable latitude for positioning the foot in any one of several good Operating positions. In a word, an actuator thus dimensioned is non-critical with respect to foot position.
  • the cover is purposely made to have a prominently large exposed area and overhangs the base 11 on both sides 14 and 15, as well as along the front edge 16.
  • the top surface is concavely curved downwardly toward the front edge 16 to provide a minimum vertical height along this front edge. This increases the probability that the foot, in probing by touch for the controller, will normally contact the cover, which is desirable for quick positioning.
  • springs 17 are pressed over raised bosses 18 on the inner surface of the cover 10.
  • the spring dimensions are such that the springs 17 hold themselves in place by helical contraction around the bosses 18 and are thus self-retaining.
  • the cover is closed by pivoting about the hinge axis 13
  • the springs 17 are guided to their flat seats 19 by the sides of conical recesses 20 formed in the base 11.
  • the springs 17 provide a biasing force to return the cover 10 to its initial unoperated position when the operators foot is removed from the cover.
  • This initial position of the cover 10 may be adjusted and fixed by a screw fastener 21 of the self-locking type threadedly engaging an insert 22 in cover 10 and having a head engaged by a dished washer 23 movably disposed in a recessed opening 24 in the base 11, as seen best in FIG. 5.
  • the screw fastener 21 may be reached for adjustment by a screwdriver through a slit 25 made in a resilient friction pad 26 applied to the bottom surface of the base 11. It will be noted that the screw-fastener 21 is retained in a captive condition within the recess 24 even though unthreaded from the insert 22.
  • a preferable form of this device may omit the slit 25 in order to purposely provide a tamper proof structure.
  • the adjustment of the screw fastener 21 is made at the factory prior to afiixing the imperforate pad 26 to the base 11, the pad 26 thus also serving to prevent subsequent tampering with the factory adjustment.
  • a foot controller having a prominently exposed actuator in the form of a hinged telescoping cover for quick and easy engagement by the foot with simple but effective means for biasing and adjusting said cover to an initial unoperated position.
  • An operator-actuated speed controller for electric motors comprisingya molded base of generally rectangular shape in plan view, a molded cover for said base also of generally rectangular shape in plan view, said base and cover each having one of its respective edges positioned in mutually abutting relation along a single straight line extending in the direction of the longer dimension, hinge means secured to said base and cover and defining a hinge axis coincident with said line, said cover having its other edges overlapping the other respective edges of the base in plan to provide a large exposed cover area relative to the base, said cover having a top external surface which, beginning at the top of the hinged edge, is curved convexly downwardly away from said edge toward the opposite edge to establish the minimum vertical height of the controller along said opposite edge, means biasing the cover to a raised position and means opposing the biasing means and adjustable from the exterior of the controller to establish an initial rest position for the cover.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Sewing Machines And Sewing (AREA)
US490590A 1965-09-27 1965-09-27 Motor speed controllers Expired - Lifetime US3353424A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US490590A US3353424A (en) 1965-09-27 1965-09-27 Motor speed controllers
DE1563752A DE1563752C3 (de) 1965-09-27 1966-09-22 Fußgeschwindigkeitsreglerfür Elektromotoren
GB42275/66A GB1109219A (en) 1965-09-27 1966-09-22 Motor speed controllers
SE12942/66A SE333763B (forum.php) 1965-09-27 1966-09-26
CH1382266A CH448228A (de) 1965-09-27 1966-09-26 Geschwindigkeitskontroller für Motore, insbesondere für elektrische Nähmaschinen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US490590A US3353424A (en) 1965-09-27 1965-09-27 Motor speed controllers

Publications (1)

Publication Number Publication Date
US3353424A true US3353424A (en) 1967-11-21

Family

ID=23948690

Family Applications (1)

Application Number Title Priority Date Filing Date
US490590A Expired - Lifetime US3353424A (en) 1965-09-27 1965-09-27 Motor speed controllers

Country Status (5)

Country Link
US (1) US3353424A (forum.php)
CH (1) CH448228A (forum.php)
DE (1) DE1563752C3 (forum.php)
GB (1) GB1109219A (forum.php)
SE (1) SE333763B (forum.php)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430013A (en) * 1967-11-15 1969-02-25 Us Air Force Rudder pedal switch
US3867591A (en) * 1974-01-16 1975-02-18 Whirlpool Co One piece switch holder and foot operated hinge actuator for vacuum cleaner switch
US4290042A (en) * 1978-08-30 1981-09-15 Yamamoto Electric Industrial Co., Ltd. Controller for electric motor
USD264848S (en) 1979-09-07 1982-06-08 Janome Sewing Machine Co., Ltd. Sewing machine foot pedal
USD342720S (en) 1992-05-18 1993-12-28 Siemens Aktiengesellschaft Foot switch
US5319996A (en) * 1993-08-13 1994-06-14 Kransco Debris resistant foot pedal switch assembly
US6784388B1 (en) * 2000-11-11 2004-08-31 Ronald J. Braaten Foot operated electrical control
US12013715B2 (en) * 2022-10-28 2024-06-18 E Sew Co., Ltd. Foot pedal switch structure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6871730B2 (ja) * 2016-12-13 2021-05-12 蛇の目ミシン工業株式会社 ミシンのフットコントローラ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2866024A (en) * 1955-08-10 1958-12-23 Linemaster Switch Corp Switch
US2878336A (en) * 1958-04-21 1959-03-17 Charles N Ehrlich Electric switch
US3200227A (en) * 1960-09-29 1965-08-10 Square D Co Carrier frame for movable contact and combination thereof with snap acting switch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2866024A (en) * 1955-08-10 1958-12-23 Linemaster Switch Corp Switch
US2878336A (en) * 1958-04-21 1959-03-17 Charles N Ehrlich Electric switch
US3200227A (en) * 1960-09-29 1965-08-10 Square D Co Carrier frame for movable contact and combination thereof with snap acting switch

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430013A (en) * 1967-11-15 1969-02-25 Us Air Force Rudder pedal switch
US3867591A (en) * 1974-01-16 1975-02-18 Whirlpool Co One piece switch holder and foot operated hinge actuator for vacuum cleaner switch
US4290042A (en) * 1978-08-30 1981-09-15 Yamamoto Electric Industrial Co., Ltd. Controller for electric motor
USD264848S (en) 1979-09-07 1982-06-08 Janome Sewing Machine Co., Ltd. Sewing machine foot pedal
USD342720S (en) 1992-05-18 1993-12-28 Siemens Aktiengesellschaft Foot switch
US5319996A (en) * 1993-08-13 1994-06-14 Kransco Debris resistant foot pedal switch assembly
WO1995005628A1 (en) * 1993-08-13 1995-02-23 Mattel, Inc. Debris resistant foot pedal switch assembly
AU676765B2 (en) * 1993-08-13 1997-03-20 Mattel, Inc. Debris resistant foot pedal switch assembly
US6784388B1 (en) * 2000-11-11 2004-08-31 Ronald J. Braaten Foot operated electrical control
US12013715B2 (en) * 2022-10-28 2024-06-18 E Sew Co., Ltd. Foot pedal switch structure

Also Published As

Publication number Publication date
SE333763B (forum.php) 1971-03-29
DE1563752B2 (de) 1973-03-22
GB1109219A (en) 1968-04-10
DE1563752C3 (de) 1973-10-04
CH448228A (de) 1967-12-15
DE1563752A1 (de) 1970-04-16

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