US1862658A - Graduated tension device for sewing machines - Google Patents

Graduated tension device for sewing machines Download PDF

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Publication number
US1862658A
US1862658A US541285A US54128531A US1862658A US 1862658 A US1862658 A US 1862658A US 541285 A US541285 A US 541285A US 54128531 A US54128531 A US 54128531A US 1862658 A US1862658 A US 1862658A
Authority
US
United States
Prior art keywords
tension
arbor
spring
sewing machines
graduated
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
US541285A
Other languages
English (en)
Inventor
Daniel H Chason
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 US541285A priority Critical patent/US1862658A/en
Priority to GB18812/31A priority patent/GB371217A/en
Priority to NL57651A priority patent/NL31090C/xx
Priority to FR723049D priority patent/FR723049A/fr
Priority to DES99896D priority patent/DE559592C/de
Application granted granted Critical
Publication of US1862658A publication Critical patent/US1862658A/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

  • This invention relates to thread-tension devices for sewing machines, and more particularly to thread-tension devices of the type having a graduated scale and an indicator cooperating therewith to show the degree of tension applied to the thread.
  • the invention has for an object to provide a graduated tension-device having the usual torsion check-spring associated therewith in which there is provision for adjusting the tension of the check-spring and retaining the graduated scale in its desired readily visible position.
  • a further object of the invention is to provide a sewing machine tension and check-spring assembly which is simple in construction and in expensive to manufacture and the parts of which may be readily as Snapd and adjusted.
  • the invention comprises the devices, combinations and arrangements of parts hereinafter described and claimed.
  • Fig. 1 is a face view of the needle-bar head of a sewing machine head carrying a tension device embodying the invention.
  • Fig. 2 is a top plan view of the tension device.
  • 3 is a. section on the line 3-3.
  • Fig. 4 is a section on the line H, of Fig. 2.
  • Fig. 5 is a section on the line 5 5.
  • Fig. 6 is a disassembled perspective view of the tension device.
  • Fig. 1 is a perspective view of the support for the arbor of the tension de vice.
  • Fig. 8 is a perspective view of a sleeve received within the support shown in Fig. 7, and
  • Fig. 9 is a rear face view of the support shown in Fig. 7.
  • Riveted to the face-plate 1 is the central supporting stud 6 in which is tired by means of the set-screw 7 one end of the tension-supporting arbor 8.
  • the stationary sleeve 9 Surrounding the supporting stud 6 and spaced from the latter is the stationary sleeve 9 having projections 10 at one end which are riveted in apertures in the face-plate 1.
  • a circularly adjustable sleeve 11 is received with the fixed sleeve 9 and is formed with a clearance slot 19. for the set-screw 7.
  • the adjustable sleeve 11 has threaded into its side wall a clamping screw 13 which passes through a clearance slot 14; in the side wall of the fixed sleeve 9.
  • torsion check-spring 15 there is coiled about the arbor 8 the usual torsion check-spring 15 one end 16 of which is anchored in a slot 17 in such arbor.
  • the other end of the torsion check-spring 15 is extended outwardly at 18 and at its free end is bent into the form of a thread-engaging loop or hook 19.
  • the portion 18 of the checkspring is limited in its movement in one direction by the stop-ledge 20 formed at one end of the adjustable sleeve 11.
  • Circular adjustment of the sleeve 11 determines the stopped position of the looped end 19 of the cheek-spring. lhe tension of the checkspring may be adjusted by loosening the setscrew 7 and turning the arbor 8 in its socket in the supporting stud 6, subsequently tightening the screw 7.
  • abutment disk 21 Seated against one end of the rotatable sleeve 11 is the usual abutment disk 21 from which is struck rearwardly the tongue 22 entering the anchor slot 23 in the stationary sleeve 9.
  • the abutment disk 21 has a central clearance aperture for the arbor 8.
  • Loose on the arbor 8. adjacent the abutment disk 21. are the usual; tension disks 24 between which the sewing thread passes.
  • Bearing upon the outer tension disk 24 is the headed end 25 of a tubular member 26 formed in its upper side wall with a slot 27 along one edge of which is marked a graduated scale.
  • the headed end 25 of the tubular member 26 is formed with a central depression 28 in which is received an anchordisk 29 having a diameter-bar 30 passing through the slot 31 in the arbor S.
  • the anchor-disk 29 is formed with a tongue 32 which enters a selected one of the circular series of apertures 33 formed in the depressed portion of the head 25 of the sleeve 26.
  • a tubular member 34 carrying an outwardly projecting indicator 35 which passes through the slot 27 and plays over the grad uated scale at the edge of the slot 27.
  • a beehive tension-spring 36 housed within the telescopically arranged members 26 and 34 a beehive tension-spring 36 the base end of which is entered by the depression 28 in the head 25 of the tubular member 26.
  • a tension regulating nut 37 is screwed onto the arbor 8 and bears against the headed end 38 of the tubular member 34.
  • the endwise movable tensionrelease pin 39 Disposed in an axial aperture in the arbor 8 is the endwise movable tensionrelease pin 39 one end of which is adapted to engage the diameter-bar 30 of the anchor disk 29 and push the latter and the tubular member 26 in a direction to relieve the tension-disks 24 of the pressure of the tension-spring 36.
  • the tension-release pin 39 is actuated as usual by the cam 40 on the presser-foot lifting lever 41 which is fulcrumed at 42 on the sewing machine frame.
  • a sewing machine tension-device having a support. an arbor rotatabl adjustable about its axis in said support, a torsion checkspring anchored at one end to said arbor, a main tension-spring, a first member anchored against rotation relative to said arbor, a second member adj ust-ably anchored to said first-mentioned member and bearing a tension indicating scale, and a tension-regulating device including a tension-regulating nut and an indicator playing over said scale.
  • a graduated tension-device for sewing machines having, a longitudinally slotted supporting arbor, a pair of telescopically arranged tubular members surrounding said arbor, one of which members is provided with a scale and the other with an indicator playing over said scale, one of said members having a head at one end, a third member anchored against rotation relative to said arbor and to which said head is adjustably anchored, a thread-tension spring housed within said tubular members, and an arbor support relative to which said arbor is rotatably adjustable.
  • a graduated tension-device for sewing machines having, a longitudinally slotted supporting arbor, a pair of telescopically arranged tubular members surrounding said arbor, one of which members is provided with a scale and the other with an indicator playing over said scale, one of said members having a head at one end, a third member anchored against rotation relative to said arbor, said third member and the headed end of one of the tubular members having interengaging projection and depression means permitting circular adjustment of the telescopic members relative to said supporting arbor.
  • a tension device for sewing machines having a support, a slotted arbor carried by said support and adjustable circularly about its axis, a check-spring anchored at one end to said arbor, a pair of tension disks loose on said arbor, a pair of telescopically arranged tubular members on said arbor, a beehive tension-spring housed within said tubular members, one of said tubular members having a graduated scale on its side wall and a head in one end formed with a central de pression entering the base end of said beehive spring, a tension regulating nut engaging the other tubular member, and an anchor disk received in said depression and formed with a diameter-bar received in the slot in sald arbor.
  • said anchor disk belng ad ustably connected to the adjacent wall of said depresdisks loose on said arbor, a tubular member having a headed end adapted to engage one of said tension-disks and formed with a depression to receive said anchor-disk, means for adjustably anchoring the headed end of said tubular member to said anchor-disk, a second tubular member telescopically received in the first mentioned tubular member, a tension-spring housed by said tubular members, and a tension-regulating nut engaging the second-mentioned tubular member, one of said tubular members having a scale and the other an indicator playing over said scale.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US541285A 1931-06-01 1931-06-01 Graduated tension device for sewing machines Expired - Lifetime US1862658A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US541285A US1862658A (en) 1931-06-01 1931-06-01 Graduated tension device for sewing machines
GB18812/31A GB371217A (en) 1931-06-01 1931-06-30 Graduated tension device for sewing machines
NL57651A NL31090C (ko) 1931-06-01 1931-07-11
FR723049D FR723049A (fr) 1931-06-01 1931-07-17 Dispositif de tension graduée pour machines à coudre
DES99896D DE559592C (de) 1931-06-01 1931-07-22 Fadenspannungsvorrichtung fuer Naehmaschinen

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US541285A US1862658A (en) 1931-06-01 1931-06-01 Graduated tension device for sewing machines
GB18812/31A GB371217A (en) 1931-06-01 1931-06-30 Graduated tension device for sewing machines
NL57651A NL31090C (ko) 1931-06-01 1931-07-11
FR723049T 1931-07-17
DES99896D DE559592C (de) 1931-06-01 1931-07-22 Fadenspannungsvorrichtung fuer Naehmaschinen

Publications (1)

Publication Number Publication Date
US1862658A true US1862658A (en) 1932-06-14

Family

ID=10118824

Family Applications (1)

Application Number Title Priority Date Filing Date
US541285A Expired - Lifetime US1862658A (en) 1931-06-01 1931-06-01 Graduated tension device for sewing machines

Country Status (5)

Country Link
US (1) US1862658A (ko)
DE (1) DE559592C (ko)
FR (1) FR723049A (ko)
GB (1) GB371217A (ko)
NL (1) NL31090C (ko)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462812A (en) * 1946-02-09 1949-02-22 Singer Mfg Co Thread-tension device for sewing machines
US2518703A (en) * 1946-08-09 1950-08-15 Singer Mfg Co Tension device
US2726053A (en) * 1952-04-21 1955-12-06 Vittorio Necchi Societa Per Az Device for adjusting the tension of the upper thread in sewing machines
US3150846A (en) * 1963-03-07 1964-09-29 Singer Co Thread tension device
US3797426A (en) * 1971-04-22 1974-03-19 Union Special Maschinenfab Controlled thread tensioner for sewing machines

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE900897C (de) * 1940-12-09 1954-01-04 Union Special Machine Co Umlaufender Nadelfadengeber, Fadenspannungseinrichtung fuer umlaufende Nadelfadengeber und Naehmaschine mit Nadelfaden-geber und Fadenspannungseinrichtung

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462812A (en) * 1946-02-09 1949-02-22 Singer Mfg Co Thread-tension device for sewing machines
US2518703A (en) * 1946-08-09 1950-08-15 Singer Mfg Co Tension device
US2726053A (en) * 1952-04-21 1955-12-06 Vittorio Necchi Societa Per Az Device for adjusting the tension of the upper thread in sewing machines
US3150846A (en) * 1963-03-07 1964-09-29 Singer Co Thread tension device
US3797426A (en) * 1971-04-22 1974-03-19 Union Special Maschinenfab Controlled thread tensioner for sewing machines

Also Published As

Publication number Publication date
GB371217A (en) 1932-04-21
FR723049A (fr) 1932-04-02
DE559592C (de) 1932-09-21
NL31090C (ko) 1933-10-16

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