US2716955A - Feed adjusting means for sewing machines - Google Patents

Feed adjusting means for sewing machines Download PDF

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Publication number
US2716955A
US2716955A US359282A US35928253A US2716955A US 2716955 A US2716955 A US 2716955A US 359282 A US359282 A US 359282A US 35928253 A US35928253 A US 35928253A US 2716955 A US2716955 A US 2716955A
Authority
US
United States
Prior art keywords
lever
slot
feed
adjusting
shaft
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
US359282A
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English (en)
Inventor
Robert W Stewart
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 US359282A priority Critical patent/US2716955A/en
Application granted granted Critical
Publication of US2716955A publication Critical patent/US2716955A/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
    • D05B27/00—Work-feeding means
    • D05B27/22—Work-feeding means with means for setting length of stitch
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
    • G01N7/10—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing diffusion of components through a porous wall and measuring a pressure or volume difference
    • G01N7/12—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing diffusion of components through a porous wall and measuring a pressure or volume difference the diffusion being followed by combustion or catalytic oxidation
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B73/00—Casings
    • D05B73/005—Doors or covers for accessing inner parts of the machine; Security devices therefor

Definitions

  • the present invention relates to sewing machines, particularly to feeding mechanisms for sewing machines, and has for a primary object to provide an improved means for maintaining the desired adjustment of a feed-adjusting or regulating lever of a sewing machine.
  • Fig. 1 is a partial front elevation view of a sewing machine incorporating the invention.
  • Fig. 2 is a fragmentary section view taken substantially on the line 2-2 of Fig. 1.
  • Fig. 3 is a fragmentary section view taken substantially on the line 3-3 of Fig. 1.
  • Fig. 4 is a fragmentary detail section view taken substantially on the line 44 of Fig. 2.
  • the present invention is illustrated in the drawings as embodied in a sewing machine having a bed-plate 1, a standard 2 rising from the one end thereof and a rotary bed-shaft 3 journaled longitudinally of the bed 1, as in a bearing-boss 4 depending from said bed.
  • the shaft 3 is designed to actuate the loop-taker and feed-lift mechanism (both not shown) and is itself driven by any suitable means, such as by a belt 5 entrained about a pulley 6 fixed on said shaft.
  • the above mechanism may be substantially the same as that illustrated in the U. S. patent of Barnes, No. 2,024,434, to which reference may be had for a complete description thereof.
  • the feed-advance mechanism as illustrated in the draw ings, is substantially the same as that disclosed in the above-mentioned patent of Eames and briefly includes a feed-advance shaft 7 journaled longitudinally of the bed 1 and parallel to the shaft 3.
  • An upstanding crank 8 is fixed to the shaft 7 and is pivotally connected at its free end to one end of a radius-bar 9.
  • the opposite end of the radius-bar 9 is apertured to pivotally receive a stud 10 that is, in turn, apertured to slidably receive a rod 11 fixed at its ends in spaced ears 12 of a rocking frame 13.
  • the rocking frame 13 is fixed to the end of a shaft 14 that is journaled longitudinally of the bed 1 and parallel to the shaft 3.
  • a fork 15 Formed integral with the frame 13 is a fork 15 that embraces an eccentric 16 on the shaft 3.
  • rotary motion of the shaft 3 imparts oscillation to the frame 13 through the fork 15 and eccentric 16, which is transmitted to and causes oscillation of the shaft 7 through the rod 11, the. radius-bar 9 and the crank 8.
  • Oscillation of the shaft 7 may be converted to feed-advance movements of the feeding element (not shown), in any suitable manner which may be such as illustrated in the above mentioned patent of Eames.
  • the amplitude of the oscillation imparted to the feedadvance shaft 7 upon oscillation of the rocking frame 13, and thus the amplitude of the feeding-stroke, is dependent upon the eccentricity of the stud 10 with respect to the axis of the shaft 14.
  • the rod 11 is made to lie in a plane normal to the shaft 14 and with the axis of the shaft 14 intersecting the central point of the axis of the rod 11.
  • a link'17 that is pivotally connected at one end to the radius-bar 9 intermediate its ends, which connection includes an eccentric pivot-pin 17 that provides for minute adjustments and centering of the parts.
  • the opposite end of the link 17 is connected to a feed-adjusting lever 18 that is pivoted to the rear wall of the standard 2 as by a pivot-screw 19.
  • the lever 18 includes an alined handpiece 20 that extends forwardly through a vertically elongated slot 21 in the front wall of the standard 2, and through a comparable slot 22 formed in a plate 23.
  • the plate 23 is secured to the front wall of the standard 2 by screws 24, and is provided with suitable indicia to indicate the selected setting of the lever 18.
  • Adjustment of the lever 18 about its pivot 19 and thus, adjustment of the feed-stroke, is limited by a block 25 secured thereto as by set screws 26 and 27.
  • the hand-piece 20 includes a reduced end portion 28 that extends into a longitudinal bore formed in the adjacent end of the lever 18, and is releasably secured therein by the set-screw 26.
  • the block 25 includes a V-shaped groove 29 that cooperates with the end of a stop screw 30 threaded through the front wall of the standard 2 and adjustably entering the groove 29.
  • V-shaped groove 29 is positioned such that when the lever 18 is swung about its pivot 19, corresponding points on the opposite faces of the groove will contact the end of the stop screw 30 and thus limit adjustment of lever 18 to corresponding positions in each direction from a central or neutral position of no-feed, which opposed settings will effect forward and reverse feed-strokes of substantially equal length.
  • the feed-regulating lever 18 is frictionally maintained in the desired position by an element 31 that includes a sleeve-like portion 32 adapted to surround the cylindrical shank of the hand-piece 20.
  • the sleeve-like portion 32 is carried by the base of a U-shaped portion 33 having opposed legs 34 which extend from the base in a direction opposite to that of the sleeve-like portion 32.
  • the element 31 is placed on the hand-piece 23 with the legs 34 of the U-shaped portion 33 located within or between the walls of the slot 21 in the bracket-arm 2.
  • the legs 34 are adapted to spring outwardly away from each other and thus resiliently bear against the walls of the slot 21.
  • a frame provided with a slot having parallel opposed side walls, an adjusting leverextending through said slot and pivotally mounted to said frame on an axis normal to a plane parallel to the opposed side walls of the slot whereby said lever may be swung longitudinally of said slot, and means for frictionally maintaining said adjusting-lever in adjusted position relative to said slot comprising a U -shaped element including a base having an aperture therethrough, and two opposed legs extending from said base and being arranged sub- 's'tant'ial ly parallel to the axis of said aperture, and a sleeve-like element extending from said base with the sleeve-like element, and said legs resiliently bearing axis thereof alined with the axis of said aperture, said 40 adjusting-lever extending through said aperture 'and said against the walls of said slots.
  • a frame provided with a slot having parallel opposed side walls, an adjustingdever extending through said slot and pivotally mounted to said frame on an axis normal to a plane parallel to the opposed side walls of the slot whereby said lever may be swung longitudinally of said slot, and means for frictionally maintaining said adjusting-lever in adjusted position relative to said slot comprising a U-shaped element including a base having an aperture therethrough, and two opposed legs extending'from said base and being arranged substantially parallel to the axis of said aperture, and a sleeve-like element extending fr'om saidbase on that side thereof opposite to said legs-and with the axis thereof alined with the axis of said aperture, said adjusting-lever extending through said aperture and said sleevelike element, and said legs resiliently bearing against the walls of said slots.
  • a frame provided with a slot having parallel opposed side walls, an adjusting-lever extending through said slot and pivotally mounted to said frame on an axis normal to a plane parallel to the opposed side walls of the slot whereby said lever may be swung longitudinally of said slot, said adjusting-lever comprising a first element having an axial bore and a second element having a reduced end-portion adapted to be releasably secured within the bore in said first element, and means for frictionally maintaining said adjusting-lever in adjusted position relative to said slot comprising, a U- shaped element including a base having an aperture therethrough for slidably receiving said second element of said adjusting-lever, and two opposed legs extending from said base and arranged substantially parallel to the axis of said aperture for resiliently bearing against said opposed walls.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sewing Machines And Sewing (AREA)
US359282A 1953-06-03 1953-06-03 Feed adjusting means for sewing machines Expired - Lifetime US2716955A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US359282A US2716955A (en) 1953-06-03 1953-06-03 Feed adjusting means for sewing machines

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US359282A US2716955A (en) 1953-06-03 1953-06-03 Feed adjusting means for sewing machines
DES35223A DE959792C (de) 1953-09-13 1953-09-13 Vorschub-Einstellvorrichtung fuer Naehmaschinen

Publications (1)

Publication Number Publication Date
US2716955A true US2716955A (en) 1955-09-06

Family

ID=40765622

Family Applications (1)

Application Number Title Priority Date Filing Date
US359282A Expired - Lifetime US2716955A (en) 1953-06-03 1953-06-03 Feed adjusting means for sewing machines

Country Status (4)

Country Link
US (1) US2716955A (de)
CH (1) CH319530A (de)
DE (1) DE959792C (de)
GB (1) GB725777A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3082723A (en) * 1961-03-09 1963-03-26 Willcox & Gibbs Sewing Machine Material work-feeding mechanism and control means therefor
US3096737A (en) * 1960-05-14 1963-07-09 Necchi Spa Fabric feeder mechanism for sewing machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1099830B (de) * 1958-02-12 1961-02-16 Union Special Maschinenfab Doppelsteppstichnaehmaschine mit einstellbarer Antriebseinrichtung fuer den Stoffvorschub

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2063264A (en) * 1935-10-08 1936-12-08 Singer Mfg Co Sewing machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2063264A (en) * 1935-10-08 1936-12-08 Singer Mfg Co Sewing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3096737A (en) * 1960-05-14 1963-07-09 Necchi Spa Fabric feeder mechanism for sewing machine
US3082723A (en) * 1961-03-09 1963-03-26 Willcox & Gibbs Sewing Machine Material work-feeding mechanism and control means therefor

Also Published As

Publication number Publication date
CH319530A (de) 1957-02-28
DE959792C (de) 1957-03-14
GB725777A (en) 1955-03-09

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