US1387139A - Tension for sewing-machines - Google Patents

Tension for sewing-machines Download PDF

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Publication number
US1387139A
US1387139A US293664A US29366419A US1387139A US 1387139 A US1387139 A US 1387139A US 293664 A US293664 A US 293664A US 29366419 A US29366419 A US 29366419A US 1387139 A US1387139 A US 1387139A
Authority
US
United States
Prior art keywords
tension
disks
disk
post
movable
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
US293664A
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English (en)
Inventor
Flanagan James Alexander
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US293664A priority Critical patent/US1387139A/en
Priority to GB13378/19A priority patent/GB139082A/en
Priority to DEF49602D priority patent/DE381321C/de
Priority to FR538528D priority patent/FR538528A/fr
Application granted granted Critical
Publication of US1387139A publication Critical patent/US1387139A/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
    • D05B47/00—Needle-thread tensioning devices; Applications of tensometers

Definitions

  • the object of this invention is to provide a needle-thread tension for sewing machines in which the adjusting parts are concealed, and which includes an indicator formed with or otherwise applied to the friction elements of the tension mechanism.
  • the invention consists of a pair of disks or plates constituting the friction elements,
  • Figure 1 is a front elevation of part of the head of a sewing machine, having the face-plate broken out.
  • Fig. 2 is a sectional elevation, the line of section being indicated by line 2--2, Fig. 1.
  • Fig. 3 is a detail front View showing the indicator.
  • Fig. 4 is a perspective view of the combined presser-foot lifter and tension cam.
  • the sewing machine head 1 may be of any approved construction, and I have herein shown the same as provided with any usual or approved needle bar 2 and presser bar 3,
  • lifter pivoted at 7 and having a camshaped head adapted to cooperate with the finger 4 to raise the presser-foot bar and permit it to lower.
  • a face-plate provided with a fixed tubular portion or extension 9 to the outer end of which is fixed one disk 10 of the tension mechanism, same being herein referred to as the stationary member.
  • 11 is another disk, herein referred to as the movable member of the tension device, and this disk 11 has an inwardly-extending tubular portion or extension 12 with a bottom 13 and an outwardly-extending tubular portion or ex tension 14 with any number of longitudinal slots 15.
  • a tension spring 16 resting upon the bottom 13 and held in place and under tension by means of a nut 17 engaging the screwthreaded end 18 of a post 19 fixed to the face-plate'S and extending through a hole in the bottom 13 outwardly.
  • a washer .20 may be interposed between the nut and spring.
  • the nut 17 has a pin 21 which engages the slot 15 so as to cause the disk 11 to turn with the nut when said nut is adjusted in order to "vary the tension of the tension spring 16.
  • the disk 10 is provided with an indicator scale 22 and the disk 11 is provided with a pointer 23 cooperating with the scale to indicate the degree of tension applied to the needle thread.
  • the post 19 is provided with a transverse longitudinal slot 24 and also has a longitudinal bore 25 extending from the slot through the face-plate.
  • a pin 26 is arrangedin the bore and it has a cross-head 27 arranged in the slot 2 1, said pin being held in place by the pressure of the spring 16 on the bottom 13, said pin projecting beyond the face-plate and hgaging a face-ca'n 28 on the lifter 6, so that as the litter is raised to raise the resser-bar and thus free the work, the cam 28 will act upon the pin 26 and force it outwardly and consequently separate the tension disk 11 from the tension disk 10 to relieve the tension upon the needle thread.
  • tension device having a pair of oppositely arranged disks, one of which is stationary and the other movable, telescoping tubular extension portions on said disks, a tension spring concealed within said tubular extension. portions, and nieansto vary thetension of the spring, same including a screwthreaded post and a nut adjustable on said post with relation to the spring.
  • tension device having a pair of oppositely arranged disks, one of which is stationary and the other movable, and having telescoping tubular portions, a tension spring concealed within said tubular por-- tions, a post extending through the disks and their tubular portions, an adjusting nut applied to one end of the post and a movable pin applied to the opposite end of the post with the tension spring interposed between said nut and pin, and means to act upon the pin to move the movable disk away from the stationary disk.
  • a tension device having a pair of oppositely arranged disks, one of which is star tionary and the other movable, telescoping tubular extensions on said disks, a tension spring concealed within said tubular extensions, a post extending through the disks and their extensions, an adjusting nut applied to one end of the post and a movable pin applied to the opposite end of the post with the tension spring interposed between them, and a cam coiiperating with a presser foot lifter to act upon the pinto release the tension upon the needle thread.
  • a tension device having a pair of oppositelyarranged disks, one of which is stationary and the other movable, telescoping tubular extensions on said disks, a tension operating with said scale to indicate the despring concealed Within said tubular ex tensions, a post extending through the disks and their extensions, an adjusting nut applied to one end of the post and a movable pin applied to the opposite end of the post with the tension spring interposed between them, and a presser-foot lifter having a facecam to act upon the pin to release the tension upon the needle thread.
  • a tension device having a pair of oppositely arranged disks, one of which. is stationary and the other movable, telescoping tubular extensions on said disks, a tension spring concealed Within said tubular extensions, the tubular extension of the movable disk having a bottom to support the spring, a longitudinally slotted and perforated screw post extending through the tubular extensions and having an adjusting nut on one end and a headed pin arranged in the slotted and perforated end of the post and coasting with the said bottom, and means to move said pin longitudinally to effect the separation of the tension disks.
  • a tension device having a pair of oppositely arranged disks, one of which is stationary and the other movable, telescoping tubular extensions on said disks, a tension spring concealed within said'tubular extensions, the tubular extension of the movable disk having a longitudinally arranged slot, a screwthreaded post arranged parallel with said extension and within the same, and an adjusting nut on said post having a lateral pin engaging the slot in the extension and adapted to turn the movable disk.
  • a tension device having a pair of oppositely arranged disks, one of which is stationary and the other movable, meansto hold the disks in variable s ring contact, and means to rotate the move le disk, said stationary disk having an indicator scale made as a part thereof and projecting beyond the movable disk and said movable disk having a pointer coiiperating with'said scale to indicate the degree of tension.
  • a tension device having a pair of oppositely arranged disks, one of which is stationary and the other movable, telescoping tubular extensions on said disks, a tension spring concealed within said tubular extensions, the tubular extension of the movable disk having a longitudinally arran ed slot, a screwthreaded post arranged para el with said extension and within the same, and an adjusting nut on said post having a lateral pin engaging the slot in the extension and adapted to turn the movable disk, said stationary disk having an indicator scale and said movable disk having a pointer w,

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US293664A 1919-04-30 1919-04-30 Tension for sewing-machines Expired - Lifetime US1387139A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US293664A US1387139A (en) 1919-04-30 1919-04-30 Tension for sewing-machines
GB13378/19A GB139082A (en) 1919-04-30 1919-05-27 Improvements in and relating to tensions for sewing machines
DEF49602D DE381321C (de) 1919-04-30 1921-06-30 Fadenspanner
FR538528D FR538528A (fr) 1919-04-30 1921-07-20 Perfectionnements aux machines à coudre

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US293664A US1387139A (en) 1919-04-30 1919-04-30 Tension for sewing-machines
GB13378/19A GB139082A (en) 1919-04-30 1919-05-27 Improvements in and relating to tensions for sewing machines
DEF49602D DE381321C (de) 1919-04-30 1921-06-30 Fadenspanner
FR538528T 1921-07-20

Publications (1)

Publication Number Publication Date
US1387139A true US1387139A (en) 1921-08-09

Family

ID=23130014

Family Applications (1)

Application Number Title Priority Date Filing Date
US293664A Expired - Lifetime US1387139A (en) 1919-04-30 1919-04-30 Tension for sewing-machines

Country Status (4)

Country Link
US (1) US1387139A (fr)
DE (1) DE381321C (fr)
FR (1) FR538528A (fr)
GB (1) GB139082A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2501807A (en) * 1946-01-22 1950-03-28 Austlid Arnljot Thread tightening device for sewing machines
US2976831A (en) * 1956-09-14 1961-03-28 Singer Mfg Co Sewing machines
US5911377A (en) * 1996-03-14 1999-06-15 Wonder Co., Ltd. Device for preventing thread-entanglement on a fishing reel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2501807A (en) * 1946-01-22 1950-03-28 Austlid Arnljot Thread tightening device for sewing machines
US2976831A (en) * 1956-09-14 1961-03-28 Singer Mfg Co Sewing machines
US5911377A (en) * 1996-03-14 1999-06-15 Wonder Co., Ltd. Device for preventing thread-entanglement on a fishing reel

Also Published As

Publication number Publication date
DE381321C (de) 1923-09-18
GB139082A (en) 1920-02-26
FR538528A (fr) 1922-06-10

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