US1355216A - Work-arm for sewing-machines - Google Patents

Work-arm for sewing-machines Download PDF

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Publication number
US1355216A
US1355216A US260257A US26025718A US1355216A US 1355216 A US1355216 A US 1355216A US 260257 A US260257 A US 260257A US 26025718 A US26025718 A US 26025718A US 1355216 A US1355216 A US 1355216A
Authority
US
United States
Prior art keywords
arm
work
piece
plate
extension
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
US260257A
Other languages
English (en)
Inventor
Voe Albert H De
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
Priority to DENDAT345312D priority Critical patent/DE345312C/de
Priority claimed from US98277A external-priority patent/US1369405A/en
Application filed by Singer Co filed Critical Singer Co
Priority to US260257A priority patent/US1355216A/en
Application granted granted Critical
Publication of US1355216A publication Critical patent/US1355216A/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
    • D05B15/00—Machines for sewing leather goods
    • D05B15/02—Shoe sewing machines
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/02—Loop takers, e.g. loopers for chain-stitch sewing machines, e.g. oscillating
    • 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

  • This invention relates to an improved form of work-arm for sewing machines. and more particularly to machines of the teed-' oPf-the-arm type for sewing up tubular work, such as the machine shown in my copending application Serial No. 98,277, filed May 18, 1916, of which this application is a division.
  • the objects of the invention are to provide a work-arm having means by which the looper and feeding mechanisms may be readily inspected and adjusted, or if desired, completely exposed.
  • the worlnarm is of a general trough or channel shape and extends first at an inclination from its support and then horizontally.
  • a lower extension piece is secured to the free end of the arm.
  • throat-plate Secured to the end wall and to the work-arm is a throat-plate. -'il1e,sides adj acent the throat-plate are closed by hinged spring-pressed cover plates.
  • Figure 1 is a vertical longitudinal section through the work-arm of the machine.
  • Fig. 2 is a transverse section through the arm taken at a point just within the end wall.
  • Fig. 3 is a top plan view of the arm, partly broken away and with the cover-plate and throatplate removed.
  • Fig. 4 is a perspective of the throat-plate.
  • Fig. 5 is a perspectiveof the extension piece, showing the hinged cover-plates.
  • 1 indicates the base of a machine from which projects laterally a bridge member 2 having at its outer free end a downwardly projecting extension 3 all as more fully disclosed in my copending application above mentioned.
  • a work-arm Projecting transversely from the projection 3 is a work-arm which 1s substantially channel or trough shaped.
  • the inner portionof the work-arm is upwardly inclined, shown at 4, and its outer or free end portion 5 18 Serial No. 260,257.
  • a leaf spring 13 is secured between its ends to the extension piece 7, the free ends of the spring bearing against the flattened portions 14 of the cover-plate hinges to yieldingly hold the cover-plates in closed position. When the cover-plates are opened the spring also holds them in open position.
  • a looper-shaft 15 carrying a looper-support 16 to which are adjustably secured the loopers 17
  • a stationary threadguide 18 from which the thread leads to the loopers.
  • a feed-dog 19 is mounted on a feed rock-lever 2O fulcrumed on the links 21 at 22.
  • Needles 23 are carried by a curved reciprocatory needle-lever 2 1, whose hub25 is journaled upon a stud-pin 26.
  • the needle-lever, looper-shaft and feed rocklever are actuated from the main-shait 22'' in the manner fully disclosed in my copending application above mentioned.
  • a sewing machine comprising, in combination, a reciprocating needle, a hollow work-arm,a loop-taker mounted within the 2.
  • a sewing machine including a frame having a hollow work-arm free at one end and supported at'its opposite end, an extension piece carried at the free end of said work-arm, an upwardly extending end-wall carried by saidextension piece, a throatcarried by said extension-piece, a throatplate secured at one end to said end-wall and at its opposite end to the hollow wort;- arm, and a cover-plate hinged to said ex- 2 tension-piece and adapted to swing outwardly and downwardly.
  • a sewing machine including a frame having a hollow work-arm tree one end and supported at Its opposite end, an extension-piece carried at the free end of'said workarm, an upwardly extending end-wall carried by said extension-piece, a threatplate secured at one end to said'end-wall and at its opposite end to the hollow workarm, a cover-plate hinged to said extension piece and adapted to swing outwardiy'and downwardly, and yielding means for holdmg sa d cover-plate 111 closed position.
  • a sewing machine comprising, in comblnation, a frame includlng an eloi ited work-arm having at its free end a cavity, a reciprocating needle, a cooperating looptaker housed within said cavity, saidwvorlcarm including a main body-portion, an extension-piece closing the lower side of said cavity, an end-wall carried by said extension-piece and closing the outer end of said cavity, a throat-plate secured at one end to said end-wall and at its opposite end to the main body-portion of said work-arm and closing the upper side of said cavity and a hinged cover-plate extending between said extension and throat-plate.
  • a sewing machine comprising, in combinatioma frame including an elongated work-arm having at its free end a cavity, a reciprocating needle, a cooperating looptalzer housed within said cavity, said workarm including a main body-portion, an extension-piece closing the lower side of said cavity, an end-wall carried by said extenwardly and downwardly,
  • sion-piece and closing the outer end of said cavity a throat-plate secured at one end to said end-wall and at its opposite end to the main body-portion of said work-arm and closing the upper side of said cavity, and a cover-plate closing one side of said cavity and hinged to said extension-piece to swing outwardly and downwardly.
  • a sewing machine comprising, in combination, a frame including an elongated work-arm having at its free end a cavity, a reciprocating needle, a cooperating looptaker housed within said cavity, said Workarm including a main body-portion, an ex tension-piece closing the lower side of said cavity, an end-wall carried by said extension-piece and closing the outer end of said cavity, a throat-plate secured at one end to said end-wall and its opposite end to the main body-portion of said work-arm and closing the upper side of said cavity, a coverplate closing one side of said cavity and hinged to said extension-piece to swim outand yielding means for holding said cover-plate in closed position.
  • a sewing machine having a hollow work-arm proper, feeding and looper niechanisms extending beyond the arm, and detachablemeans for inclosing said mechanisms comprising an extension piece having an end-wall, a throat-plate, and a hinged,
  • a sewing machine having a hollow worl arm proper, feeding and looper mechanisms extending beyond the ann,'and detachable means for inclosing sai-d mechanisms including means for affording access to them'while inclosed.
  • a sewing machine having a hollow work-arm proper, feeding and looper mech-' anisms extending beyond the arm, detachable top, bottom and end'walls inclosing said mechanisms, and side walls hinged to said bottom wall and yieldingly held in open or closed position.
  • a sewing machine having a hollow work-arm, feeding and loopermechanisms extending beyond the arm, detachable top, bottom and end walls inclosing said mechanisms, and a retractable side wall affording access to said mechanisms whileinclosed.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US260257A 1916-05-18 1918-10-30 Work-arm for sewing-machines Expired - Lifetime US1355216A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DENDAT345312D DE345312C (enrdf_load_stackoverflow) 1916-05-18
US260257A US1355216A (en) 1916-05-18 1918-10-30 Work-arm for sewing-machines

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US98277A US1369405A (en) 1916-05-18 1916-05-18 Sewing-machine
US260257A US1355216A (en) 1916-05-18 1918-10-30 Work-arm for sewing-machines

Publications (1)

Publication Number Publication Date
US1355216A true US1355216A (en) 1920-10-12

Family

ID=26794583

Family Applications (1)

Application Number Title Priority Date Filing Date
US260257A Expired - Lifetime US1355216A (en) 1916-05-18 1918-10-30 Work-arm for sewing-machines

Country Status (2)

Country Link
US (1) US1355216A (enrdf_load_stackoverflow)
DE (1) DE345312C (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE924304C (de) * 1947-06-16 1955-02-28 Bernina Naehmasch Gegauf Haushaltnaehmaschine mit freiem Tragarm

Also Published As

Publication number Publication date
DE345312C (enrdf_load_stackoverflow)

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