US3545391A - Treadle support for sewing machine drive - Google Patents

Treadle support for sewing machine drive Download PDF

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Publication number
US3545391A
US3545391A US831186A US3545391DA US3545391A US 3545391 A US3545391 A US 3545391A US 831186 A US831186 A US 831186A US 3545391D A US3545391D A US 3545391DA US 3545391 A US3545391 A US 3545391A
Authority
US
United States
Prior art keywords
treadle
sewing machine
cabinet
secured
belt
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
US831186A
Other languages
English (en)
Inventor
Karl D Schweers
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.)
SSMC Inc
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 US3545391A publication Critical patent/US3545391A/en
Anticipated expiration legal-status Critical
Assigned to SSMC INC., A CORP. OF DE reassignment SSMC INC., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: SINGER COMPANY, THE
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B75/00—Frames, stands, tables, or other furniture adapted to carry sewing machines
    • D05B75/02—Frames, stands, tables, or other furniture adapted to carry sewing machines for drop-head sewing machines

Definitions

  • a treadle drive for a sewing machine is disclosed in combination with a treadle construction for use with a sewing machine cabinet of the drop head" type in which the sewing machine is pivotally supported and may be dropped beneath the cabinet top for storage.
  • the treadle construction includes a telescoping treadle support which may be folded into compact form for storage beneath the dropped sewing machine in the cabinet.
  • a unique connection between the treadle and the treadle drive accommodates the telescoping arrangement of the treadle support.
  • 97G 35-45391 sum 1 BF 4 g 2 H: W an A 75 82 74 M 2 INVENTOR.
  • the belt and the spring are permanently secured to the treadle and the treadle may be placed anywhereon the floor.
  • the treadle is carried by a support permanently secured to a cabinet and treadle drive must accommodate shift of the treadle and the treadle support from an operative to a stored position in the cabinet.
  • the drivebelt of the treadle drive of this invention is wrapped about the driven pulley of a one-wayclutch device which is carried on the conventional motor bracket of a sewing machine frame.
  • One end of the drivebelt and the spring to which the other end of the drivebelt is fast, are secured to a ferrule formed with a wide flange.
  • the treadle is formed with a clearance opening which will pass the belt and the spring but not the ferrule flange.
  • the treadle is fulcrumed on a, telescopother moving parts of the sewing machine.
  • the bracket arm 13 of the sewing machine is formed with a mounting seat 18 intended to accommodate an electric motor-mounting means when electric power is used to drive the main shaft 15. In the present invention, as will be described hereinbelow, the mounting seat 18 is utilized to support portions of the treadle drive mechanism of this invention.
  • the sewing machine is first tipped backwardly slightly, the: hinged top portion 23 is turned upwardly, the sewing machine is dropped into the storage space 26 between the side panel pieces 24, after which the pivoted top portion 23is lowered.
  • An abutment block 27 may be secured to a side panel piece 24 for engagement with the work supporting bed 14 of the sewing machine to establish a definite stored position of the sewing machine in the storage space 26.
  • the drop head cabinet may also be provided with a top cover 28 hinged or otherwise secured to the cabinet for ing support frame which is pivoted beneath a sewing machine cabinet.
  • FIG. 1 is a' front elevational view of a sewing machinein raised operative position in a cabinet which is shown in vertical cross section and to which the treadle drive mechanism of this invention has been applied;
  • FIG. 2 is a cross-sectional view taken vertically through the cabinet substantially along line 2-2 on FIG. 1;
  • FIG. 3 is a cross sectional view similar to thatof FIG. 2 but showing the sewing machineand the treadle drive in stored position in the cabinet; i I
  • FIG. 4 is a bottom plan view of the sewingimachineand treadle drive in stored position in the cabinet
  • a sewing machine indicatedgenerally at 11 is illustrated in association with adrop head cabinet indicated generally at 12.
  • the sewing machine may be of the conventional type including a frame with a bracket arm 13 rising from a work-supporting bed 14.
  • a main drive shaft 15 in the bracket arm carries a balance wheel 16 and is provided within the bracket arm with conventional connections to impart endwise reciprocatory movement to a needle 17 of the sewing machine and to impartoperative motion to the positioning over the opening between the top portions 21 and 23 when the sewing machine is shifted into stored position as illustrated in FIG. 3.
  • the drop head cabinet 12 may be provided with legs 29 of any desired configuration for supporting the side panel pieces 24 sufficiently above the level of a floor. that a sewing machine operator may find convenient leg room beneath the side panel pieces when seated at the cabinet.
  • a clip 42 set into the stud shaft 34 retains on the stud shaft both pulleys 41 and 37.
  • FIG. 6 there is provided in the recess 39 a pair of roller clutch members 43 between the hub portion 36 of the pulley 37 and the annular projection 40 of the pulley 41.
  • the annular projection 40 of the drive pulley 41 is preferably formed with tapering seats 44 for the roller clutch members 63 so that when the drive pulley 41 is turned in one direction, i.e., counterclockwise as viewed in FIG. 6, the roller clutch members 43 will lock the pulleys 41 and 37 for rotation as a unit, and when the drive pulley 41 is turned in the opposite direction, i.e.,
  • roller clutch members 43 will move into a deeper portion of the tapering seats 44 and drivingly separate the pulleys 41 and 37.
  • each may be embraced by a wire spring member 45, the wire spring members beingengagedat the opposite extremity in the annular projecworld where electric power is available only on a sporadic or haphazard basis so that while an electric drive motor is required to be included on the machine for use when electric power is available, facilities for rapid conversion to a treadle drive are also required.
  • the support bracket 32 for the one-way clutch device should be applied in addition to an electric motor on the sewing machine.
  • the support bracket 32 therefore must be so dimensioned as to properly orient the belt 38 when an electric motor-mounting seat 18 and the support bracket 32.
  • a spacing insert 46 is positioned between the supporting bracket 32 and the motor-mounting seat 18, with the spacing insert preferably dimensioned so as to occupy the same space as an electric motor-mounting bracket.
  • Bifurcated fingers 47-47 on the support bracket 32 embrace the work-supporting bed 14 of the sewing machine so as to stabilize the supporting bracket when it is fastened by the single fastening bolt 31.
  • a coil spring 59 is secured to the second ferrule 56, and therefore to the extremity 57 of the belt 50 as, for instance, by a locking tape or band 60, and the spring 59 which encompasses the first extremity 51 of the belt 50 is secured at the other end to the ferrule 54 similarly by use of a locking tape or bank 61.
  • the ferrule 54 is formed with a wide flange 62 for the purpose, as will be described hereinbelow, of providing an interlocking engagement with a treadle.
  • Indicated at 70 in the drawings is a foot treadle to which an extension 71 is secured by a knurled fastening screw 72.
  • the treadle 70 is fulcrumed on pintles 73 set into the treadle which pintles engage apertures formed in angle brackets 74 secured to the base portion 75 of a U-shaped treadle supporting frame indicated generally at 76.
  • limb portions 77 and 78 Secured to the base portion75 of the treadle supporting frame are limb portions 77 and 78 which are preferably tubular and accommodate each a telescopically arranged limb extension 79 and 80 respectively.
  • the limb extensions 79 and 80 are apertured each pivotally to embrace a hinge pintle 81 secured to the side panel 24 of the sewing machine cabinet so that the treadle supporting frame is pivoted to the cabinet for movement selectively to a stored position beneath the sewing machine storage space 26 and to an operative position in which cushion rings 82 on the base portion 75 of the frame contact the floor.
  • the telescopically arranged plural sections of the limbs of the U-shaped treadle supporting frame provide for the treadle supporting frame to be collapsed when shifted into stored position.
  • the width of the sewing machine cabinet may be considerably less than the distance from the hinge pintles 81 to the floor.
  • the belt 50 and the spring 59 pass through a clearance opening 95 in the treadle extension 71, the wide flange 62 of the ferrule 54 being larger in diameter than the clearance opening provides for an operative connection between the belt and the treadle on downward movement of the treadle.
  • the spring 59 provides for the. return movement of the belt and the treadle.
  • the spring clip 96 accommodates the ferrule 54 when the treadle is to be stored and the sewing machine 11 occupies a dropped or stored position in the sewing machine storage space 26.
  • a second ferrule accommodating clip 97 may be provided beneath the treadle for engaging the ferrule 54 when the treadle is to be stored while the sewing machine remains in an operative position in the cabinet as shown, for instance, in FIG. 1.
  • a treadle operated driving mechanism adapted for use with a sewing machine having a frame including a bracket arm, a main drive shaft journaled in said frame, and a seat formed on said bracket arm for the reception of an electric motor-mounting means
  • said treadle operated driving mechanism comprising a one-way clutch device including a driving wheel adapted to be operatively interconnected with said sewing machine main drive shaft and a driven wheel journaled coaxially in a support bracket, and clutch elements interlocking said wheels for rotation of said driven wheel, means for positioning the support bracket of said one-way clutch device on said electric motor-mounting seat on said sewing machine bracket arm, a treadle, a flexible belt engaged between its extremities in driving relationship on said driven wheel of said one-way clutch device and a spring having one end secured to one extremity of said flexible belt, the other end of said spring and the other extremity of said flexible belt being secured closely adjacent each other to said treadle, said flexible belt and adapted to'be reciprocated by said treadle means and oscillatable in response to operator influence.
  • a treadle operated driving mechanism as set forth in claim 2 in which said treadle sustaining frame comprises a U- shaped member which is shiftably supported on said cabinet by means of hinges attached to the extremity of each limb of the U-shaped member, said treadle being fulcrumed on the base portion of said U-shaped member, anrbach limb of said U-shaped member being formed of plural sections telescopically arranged so that the U-shaped frame member may be collapsed for storage.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US831186A 1969-06-06 1969-06-06 Treadle support for sewing machine drive Expired - Lifetime US3545391A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83118669A 1969-06-06 1969-06-06

Publications (1)

Publication Number Publication Date
US3545391A true US3545391A (en) 1970-12-08

Family

ID=25258476

Family Applications (1)

Application Number Title Priority Date Filing Date
US831186A Expired - Lifetime US3545391A (en) 1969-06-06 1969-06-06 Treadle support for sewing machine drive

Country Status (4)

Country Link
US (1) US3545391A (enExample)
AU (1) AU1022570A (enExample)
DE (2) DE7020753U (enExample)
FR (1) FR2052296A5 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259915A (en) * 1980-08-11 1981-04-07 The Singer Company Treadle drive for electrified sewing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259915A (en) * 1980-08-11 1981-04-07 The Singer Company Treadle drive for electrified sewing machine

Also Published As

Publication number Publication date
DE2027244A1 (de) 1971-03-25
FR2052296A5 (enExample) 1971-04-09
DE7020753U (de) 1971-01-07
AU1022570A (en) 1971-07-15

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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