US3739735A - Electric motor mount for sewing machines - Google Patents

Electric motor mount for sewing machines Download PDF

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Publication number
US3739735A
US3739735A US00249331A US3739735DA US3739735A US 3739735 A US3739735 A US 3739735A US 00249331 A US00249331 A US 00249331A US 3739735D A US3739735D A US 3739735DA US 3739735 A US3739735 A US 3739735A
Authority
US
United States
Prior art keywords
sewing machine
motor
drive shaft
housing
casing
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
US00249331A
Other languages
English (en)
Inventor
W Herron
K Adams
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
Application granted granted Critical
Publication of US3739735A publication Critical patent/US3739735A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B69/00—Driving-gear; Control devices
    • D05B69/10—Electrical or electromagnetic drives
    • D05B69/12—Electrical or electromagnetic drives using rotary electric motors

Definitions

  • ABSTRACT A mounting arrangement for pivotally supporting an electric motor within the casing of a sewing machine with provision for angular adjustment of the motor to regulate the tension in a belt by which the motor drives the sewing machine and in which the pivotal motor sup port is arranged to provide for maximum belt tension adjustment with minimum disturbance in the registration of an electrical connector socket on the motor relatively to a clearance opening for the electrical connector in the sewing machine casing.
  • FIG. 1 represents an end elevational view of a sewing machine having this invention applied thereto with portions of the sewing machine casing broken away,
  • FIG. 2 is a bottom plan view of the sewing machine of FIG. 1 with the sewing machine bed casing removed
  • FIG. 3 is a cross sectional view taken substantially along line 3-3 of FIG. 1.
  • the sewing machine includes a frame 12 in which the operating mechanism of the sewing machine such as a main shaft 13 is supported.
  • the sewing machine is also provided with an exterior casing 14 which may be formed as a portion of the frame 12 or which may be provided as a separate element covering the frame.
  • an electric motor indicated generally at 20 is provided for driving the sewing machine.
  • the motor 20 is mounted on the sewing machine frame within the casing 14, and a drive shaft 21 of the electricmotor carries a pulley 22 on which is entrained a belt 23 which drivingly engages a sprocket 24 on the main shaft 13 of the sewing machine.
  • the electric motor 20 is constructed with a housing preferably formed of an insulating material such as molded synthetic plastic or the like.
  • the housing is formed integrally with an electric socket 31 in which terminals 32 for electric wiring of the motor as well as any ancillary electrical equipment (not shown) such as lighting devices or the like may be directed.
  • the socket 31 is adapted to accommodate a plug 33 which carries prongs as engageable with the terminals 32 thus to provide a separable electric connector so that conductor 35 to a source of supply as well as to a speed controlling instrumentality (not shown) may be readily disconnected from the sewing machine as for storage, transport or the like.
  • the sewing machine casing 114 is formed with a clearance aperture 40 for the plug 33 which, as best shown in FIG. 3, is arranged in registry with the socket 31 and for appearance and safety should be as small as is possible.
  • the motor mounting of this invention provides for minimum size of the clearance aperture 40 commensurate with a maximum range of adjustment of the position of the motor drive shaft for belt tension regulation.
  • the motor mount includes a pair of axially aligned pivot pins and 51 which are secured in lugs 52, 53 respectively on the machine frame, and which are enhanced by apertured bosses 54, 55 on the motor housing.
  • an arrangement as shown in FIG. 3 may be used in which the sewing machine frame lug 52 is formed with a transverse plot 56 within which is situated a spring clip 57 which is snapped onto the pivot pin 50.
  • the aligned pivot pins 50, 51 engage the motor housing closely contiguous to the electric connector socket 331 so that despite pivoted movement of the motor 20, the socket will move only slightly relatively to the clearance aperture 40 and the aperture need only be slightly larger than the plug in order to accommodate the plug in any of a wide range of different angular positions of the motor.
  • the drive shaft 21 of the motor is preferably arranged at a greater distance from the pivot pins 50 and SI than the socket. This remote position of thedrive shaft provides for increased shift of the drive shaft position when the motor is shifted angularly about the axis of the pivot pins 50 and 51.
  • the motor housing 30 is formed, at the side of the drive shaft opposite the socket 311', with a guideway 60 which extends radially of the pivotal axis defined by the pivot pins 50, 51.
  • a crank pin 61 carried eccentrically on a threaded stud 62 which is constrained in a threaded bore 63 in a lug 64 on the sewing machine frame.
  • a lock nut 65 serves selectively to clamp the stud 62 in any selected position of the crank pin.
  • the guideway 60 and threaded stud 62 are arranged at the opposite side of the motor drive shaft 21 from the socket 31.
  • an electric sewing machine driving motor having a housing, a drive shaft projecting exteriorly of said housing and an electrical socket carried on said housing, means for shiftably supporting said electric motor within said sewing machine casing comprising interengaging pivot means on said sewing machine frame and on said electric motor housing remote from said drive means and said electrical socket are arranged at one side of said drive shaft and said motor locating means is arranged at the opposite side of said drive shaft.
  • said motor locating means comprises a guideway formed in said motor housing substantially radially of said pivot means, and a crank pin adjustably secured in said sewing machine frame and engaged in said guideway.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Motor Or Generator Frames (AREA)
US00249331A 1972-05-01 1972-05-01 Electric motor mount for sewing machines Expired - Lifetime US3739735A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24933172A 1972-05-01 1972-05-01

Publications (1)

Publication Number Publication Date
US3739735A true US3739735A (en) 1973-06-19

Family

ID=22943012

Family Applications (1)

Application Number Title Priority Date Filing Date
US00249331A Expired - Lifetime US3739735A (en) 1972-05-01 1972-05-01 Electric motor mount for sewing machines

Country Status (9)

Country Link
US (1) US3739735A (OSRAM)
JP (1) JPS5530455Y2 (OSRAM)
BR (1) BR7303136D0 (OSRAM)
CH (1) CH558852A (OSRAM)
DE (1) DE2321299C2 (OSRAM)
FR (1) FR2186032A5 (OSRAM)
GB (1) GB1422257A (OSRAM)
IT (1) IT984142B (OSRAM)
SE (1) SE379066B (OSRAM)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4350104A (en) * 1981-10-15 1982-09-21 The Singer Company Sewing machine motor mount
US4503792A (en) * 1983-09-09 1985-03-12 The Singer Company Pivotable motor with mounting pin

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3141429A (en) * 1959-12-30 1964-07-21 Singer Co Sewing machine with built-in electric speed-responsive regulating systems
US3157142A (en) * 1961-07-25 1964-11-17 Singer Co Drive means for sewing machines

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3141429A (en) * 1959-12-30 1964-07-21 Singer Co Sewing machine with built-in electric speed-responsive regulating systems
US3157142A (en) * 1961-07-25 1964-11-17 Singer Co Drive means for sewing machines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4350104A (en) * 1981-10-15 1982-09-21 The Singer Company Sewing machine motor mount
US4503792A (en) * 1983-09-09 1985-03-12 The Singer Company Pivotable motor with mounting pin

Also Published As

Publication number Publication date
JPS4931563U (OSRAM) 1974-03-19
BR7303136D0 (pt) 1974-07-25
IT984142B (it) 1974-11-20
DE2321299C2 (de) 1983-08-04
SE379066B (OSRAM) 1975-09-22
DE2321299A1 (de) 1973-11-22
FR2186032A5 (OSRAM) 1974-01-04
CH558852A (de) 1975-02-14
GB1422257A (en) 1976-01-21
JPS5530455Y2 (OSRAM) 1980-07-19

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SSMC INC., A CORP. OF DE, CONNECTICUT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SINGER COMPANY, THE;REEL/FRAME:005041/0077

Effective date: 19881202