US2749859A - Sewing machines - Google Patents

Sewing machines Download PDF

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Publication number
US2749859A
US2749859A US221562A US22156251A US2749859A US 2749859 A US2749859 A US 2749859A US 221562 A US221562 A US 221562A US 22156251 A US22156251 A US 22156251A US 2749859 A US2749859 A US 2749859A
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United States
Prior art keywords
feed
bar
bracket
arm
dog
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Expired - Lifetime
Application number
US221562A
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English (en)
Inventor
George Sauer
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.)
Union Special Machine Co
Original Assignee
Union Special Machine Co
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Filing date
Publication date
Priority to FR1050898D priority Critical patent/FR1050898A/fr
Application filed by Union Special Machine Co filed Critical Union Special Machine Co
Priority to US221562A priority patent/US2749859A/en
Priority to DEU1547A priority patent/DE937684C/de
Priority to GB9644/52A priority patent/GB712147A/en
Priority to US299534A priority patent/US2762454A/en
Application granted granted Critical
Publication of US2749859A publication Critical patent/US2749859A/en
Anticipated expiration legal-status Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/04—Applying separate sealing or securing members, e.g. clips
    • B65B51/07—Sewing or stitching
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements

Definitions

  • fu'r'ther object of the invention is the 'provis'iohof readily adjustable means whereby the feed dhgrnay 'b'e tilted and set either in a position in 'whi'chthe feedihg su'rfaceof the dog is in'a horizontal plane as it engages and advances the work o'r'one in which said suif'ace is 'tit a "slight angle to the horizontal, depending upon the requirerhents of the work being performed.
  • Another object of the invention is 'to prdvidejdtfbtiih lubrication for the work feeding mechanism andnther "operating parts in a machine'positioned for theclosingdf filled bags, in which the main drive shaft is vertically provision of lubricant corftrol means which permits the free flow-of'oil to the bearings 'of the inachine when-'it'is operating and which automatieallystops such-flow when the operation of the machine ceases.
  • Fig. 2 is an end elevationalview of the machine, with the cover of the needle-head removed, 'as seen from "the left-handend of Fig. 1;
  • Fig. 3 is an elevational "rear view 'of the 'r'naclrihe in which the longitudinal axis of 'the main drive shaft is disposed vertically instead of horizontally as in Figs; -l
  • Fig. 4 shows, in exploded perspective form; *the various parts of the feed-dog'arid feed-bar assembly; 'Fi'g. 4'21 shows in frag'rnente'iry form the upper portion of the feed-bar bracket as viewed from the right in Fig. 4-,
  • Fig. 5 is a fragmentary view, in vertical section, of the oil reservoir embodying the means for checkihg 'the how of oil when the machine is not in use;
  • Fig. 5a is a ho'rizontal sectional view through the reservoir, taken along the line 5a of Fig. 5;
  • Figs. 6 and 6a show, in elevation and plan, respectively
  • I Fig. 7 is an axial sectional view through a portion of the drive shaft showing the manner in which the oil from the reservoir is distributed to various bearings.
  • the machin will besuppor'ted by a'pe'destalor'the like in substantially the same position as that's hdwn' ih 'tlie'pa'tehttb Ki'lcera et al., No. l,577,472,"grantedMarch 23,1921; a W v
  • the frame of the machine comprises a base lha'vin'g a work-supporting surface (notshown) from one end Elf which rises a'standard 2 (Figs. 2"a'nd 3). 'Arroverhaiig'ing "an'n 3pi-ojectslaterallyfrom the upper 'e'ndof thestahdaid and terminatesin a needle-head 4.
  • a iri'aindrive than extends longitudinally thrgu'gh the base 'andis journalen inevitable-bearings therein.
  • the shaft At its right 'end the shaft extends through the frame and projects therefrom, the pr'o'jecting an carryingacombined hand wheel'and'pulley 6through which power for operating the machine may be applied froin any suitable source.
  • the shaft ' has a crank 7 forriied "thereon which carries a strap member 8. 'Apitman'is conriected'tothe strap'rhember, the modeof conhection being shown clearly in the co endin application 6f flscar Quist, Serial No. 211,457, filed February 17,
  • the needle bar '11 carries a needle at its lower end which is reciprocated through the work between successive feeding movements of the latter along the work-supporting surface 15 (Fig. 2).
  • a throat- -plate 16 At the lower end of the worksuPPorting surface, as shown in Fig. 3, there is a throat- -plate 16 provided with slots through which the feed-dog 17 (Fig. '2) operates to feed the work that is being 'sewn.
  • the material being sewn is held against the throat plate by means of a-presser foot 18 (Fig. 2) which is pivoted at 20 to a supporting shank 21 fastened to a resser-bar 19 mounted in suitable bearings in the needle-head 4.
  • the resser-foot 18 is normally maintained in contact with the work by a spring 22 surrounding the resser-bar 19.
  • Suitable means of conventional character (not shown) are provided for lifting the presser-bar for the introduction or removal of work.
  • v n Fig. 4 includes the feed-dog 17 which is supported and given four movements, that is, it is raised into engagement with the material, then moved forwardly for feeding the material, then moved downwardly away from the material and then returned to its initial position.
  • Feed and return movements are imparted to the feed-dog by a feed-bar 23 in a manner to be presently described.
  • the feed-bar is of the oifset type adapted to support the feed-dog to act along a line to the left of the feed-rocker to be described. This enables formation of the frame in a way to facilitate movement of filled bags.
  • the feed-bar is provided at the left end of the offset portion with a vertical flange 23a having a flat surface in which is formed a groove 61 which is proportioned to fit lugs 25 (Fig. 4a) projecting from the cooperating face of a G-shaped feed-bar bracket 24 when these parts are assembled.
  • the vertical flange 23a has a threaded opening therein adapted to receive a screw 26 by which the bracket arm 24 is secured to the feed-bar 23.
  • An opening 60 in the upper portion of the bracket arm 24 through which the screw 26 passes is elongated in a direction parallel with the groove 61 so as to permit lateral adjustment of the bracket arm with respect to the bar 23 and also lateral adjustment of the feed-dog, which, as will presently be explained, is adjustably supported by the bracket arm 24; turning of the bracket-arm in relation to bar 23 is prevented by the engagement of the lugs 25 with the groove 61 in the vertical face 23a of the bar.
  • a feed-dog holder 27 which, as will be explained, is capable of angular adjustment with respect to the bracket-arm.
  • the holder 27 has an arcuate-shaped opening 29, through which a set screw 30 may be inserted for engagement with a threaded opening 31 in the bracket-arm. Holder 27 also has therein an opening 28 through which access may be had to the screw 26 when adjustment of the bracket-arm is desired.
  • the holder is provided with a channel 32 arranged to receive an arm 33 of feed-dog 17.
  • An opening 62 in the channelled portion of the holder 27 permits passage therethrough of a screw 37 which extends through an opening in the shank 33 of the feed-dog and is engaged with threads in an opening 38 in the bracket-arm. Screw 37 provides a pivot for the angular adjustment of the holder 27 as permitted by the opening 29.
  • a threaded opening 63 is provided in the holder 27 to receive a set-screw 64 which engages the under surface of one of the longitudinally extending portions of the feed-dog. This guards against relative turning of the feed-dog in relation to the holder as the feed-dog actively engages the work.
  • a needle-guard holder 34 is provided for retaining a needleguard 36, the holder having a channel 35 in the back thereof, which engages the shank 33 of the feed-dog and also having a channel 65 in the opposite face thereof into which the shank of the needle-guard 36 is fitted.
  • the needle-guard and its holder, and also the feed-dog 17 and the feed-dog holder 27 are secured to the bracket-arm 24 by the screw 37 which passes through the alined openings in the several parts and is engaged by the threaded opening 38 in the bracket-arm 24.
  • the screw 37 constitutes a pivot upon which the feed-dog holder 27 may be turned, the extent of angular movement being determined by the length of the arcuateshaped opening 29.
  • the shank 33 of the feed-dog is closely fitted within the channel 32 in the holder 27, its angular position is determined by that of the holder which is held in a desired position of adjustment by tightening the screw 30.
  • the mode of mounting the feeddog makes it possible to adjust it in three ditferent ways. It may be adjusted longitudinally of the toothed extensions by the shifting of the bracket-arm 24 with respect to the feed-bar 23, as permitted by the elongated opening 60; vertical adjustment is permitted by the elongated opening in the shank 33 of the feed-dog, While angular adjustment is effected by the angular movement of the holder 27 around the screw 37 as a pivot.
  • the feed-bar 23 is fastened to a shaft 39 (Fig. 1)
  • This feed-rocker is given rocking movements by a feed-stroke eccentric 40, the motion being transmitted through a pitman 41 to the feed-rocker.
  • Pitman 41 is connected to the rocker by a bolt 44 which may be secured in any desired position along an arcuate-shaped slot 43 in an arm of the rocker.
  • the rocker is fastened to a shaft 45 (Fig. 2) which is supported by suitable bearings at the rear of the base of the frame. It will be understood that rocking movements thus imparted to the rocker 42 serve to reciprocate the feed-bar 23 and through it the feed-dog 17.
  • the extent of rocking movement of the rocker 42 and hence the longitudinal movement of the feed-bar may be regulated by adjusting the position of the bolt 44 in the slot 43, the slot being of sufficient length to provide the desired range of movement of the feed-bar.
  • Bracket-arm 24 is connected by a pitman 66 (Fig. 2) with an eccentric 67 which is carried by the main shaft, thereby serving to rock the feed-bar about its pivot 39 to carry the feed-dog 17 into and out of engagement with the work.
  • the feed-dog is given the desired fourmotion movement to engage the work and advance it and then return to its initial position.
  • a four-motion looper 46 (Fig. 2) which coacts with the needle in the formation of stitches.
  • the looper is mounted on the upper end of a looper-carrier 47 which is pivotally supported by a bolt 48 carried by an arm 48a secured to a shaft 48b rockably mounted in the base of the machine.
  • Attached to the carrier 47 is a ball-pin which is encircled by a strap at one end of a link 49, the opposite end of which also has a strap that encircles a ball-pin carried by an arm 50 (Fig. 1).
  • This arm extends from a member 50a which is rocked about a fixed shaft 51 extending laterally of the base of the machine.
  • the member 50a is rocked by connections from a looper stroke eccentric 52 carried by the main shaft 5.
  • These connections include a sleeve 51a mounted on the shaft 51 and having an arm 51b connected by a springurged pin 51c with an arm of member 50a.
  • Sleeve 51a has an arm 51d carrying a ball-pin connected with the lower end of a pitman having a strap at its upper end cooperating with the eccentric 52.
  • Means are also provided to impart needle avoid movements to the looper in properly timed relation to the loop-seizing-and-shedding movements imparted by the mechanism above described.
  • Such means includes an arm 480 secured to the shaft 48b pivotally connected with the lower end of a pitman having a strap 48d surrounding an eccentric on the main shaft 5a.
  • means are provided for controlling the fiow of lubricating oil to the work-feeding mechanism and other parts when the machine is in the position shown in Fig. 3, i. e., in which the machine is used for closing filled bags.
  • the oil for lubricating the work-feeding devices and other parts of the machine is fed from a reservoir 53 through various tubes 53a (Fig. 3).
  • One of the tubes 53a may, for example, extend to a pocket 53b (Fig. 3) from which the lubricant may be supplied through wicking 68 in a bore 68a, Figs. 3 and 7, to a bearing 69a in a wall 69 (Figs. 1 and 7) in the machine base.
  • the left-hand section 512 of the main shaft is hollow and is preferably filled with wicking, the oil being conducted to the wicking in the shaft through a hole 70 drilled therein which communicates with the bore 68a.
  • the lubricant is then delivered from the bore of the shaft through radial openings alined with the various bearings and eccentrics, such as the feed eccentric 40 and a trimmer operating eccentric 72 (Fig. 7).
  • the lubricant delivered to the hearing has a tendency to flow downwardly by gravity along the surface of the main shaft when it is in the vertical operating position assumed for. bag closing purposes and is apt to be discharged on'to points where it is not desired; To prevent;
  • a helical groove 54' is 'providedin the bearing 69a adjacent to its lower end; the direction of the spiral. being; such that any oil; flowing; alongthe shaft will be forced upwardly by the pumping action of the groove.
  • acheck valve is provided in thereservoir, this valve consisting of a ball- 55 positioned within a cage 56 which is fastened to the bottomwall of the reservoir, the cage consisting of two U-shaped wires the planes of which are preferably disposed at 90 in relation to each other.
  • the cage is so positioned that when the machine is not in operation the ball will rest in the opening of a passageway 57 extending from the reservoir to a manifold 53 from which the several tubes 53a lead to various parts of the machine and will thus block the passageway from the reservoir.
  • the machine When the machine is running, its Vibration keeps the ball from seating and in consequence the oil will readily flow from the reservoir through the passageway 57 to the manifold and thence through the tubes to various parts of the machine.
  • the ball will seat itself again in the opening to the passageway and thereby the flow of oil from the reservoir will be automatically stopped.
  • the ball is preferably formed of steel or other metal and in any event is substantially heavier than or of greater mass than the oil which it displaces.
  • the ball check-valve of the lubricating system may, if desired, be located directly at the upper end of the lubricant delivery tube 53a, as shown in Figs. 6 and 6a, instead of being located as shown in Fig. 5.
  • U-shaped wires 56a are then mounted on a small fitting at the top of the tube and serve to retain a ball 55a over the upper end of a small passage through the fitting. The latter may be screwed into the lower end of the reservoir. This arrangement is desirable when only a single delivery tube 53a is provided. It will be understood that the ball will seat itself in the orifice at the top of the fitting upon the cessation of vibration of the machine when its operation is stopped.
  • the oil reservoir may be filled through a Gits oil cup 73 at its top.
  • the machine may be used for the seaming of flatwork, as in the production of bags, and when so used the work-supporting surface and the overhanging arm will be disposed horizontally.
  • the machine is particularly suited for the closing of filled bags and for that purpose the work-supporting surface and the overhanging arm will be vertically disposed. It will be understood that whenever reference is made herein to the vertical or horizontal disposition or movement of any of the parts of the machine, this is with reference to the arrangement of the machine with the work-supporting surface and the overhanging arm disposed horizontally. While the invention has been disclosed in a particular form of embodiment, it will be understood that the construction and the arrangement of the parts may be varied without departing from the spirit and scope of the invention as defined by the appended claims.
  • a work-feeding mechanism comprising a rockable member, connections from said shaft for rocking said member, a feed-bar pivotally connected to said member and arranged for longitudinal reciprocation thereby, an arm rigidly connected with the feed-bar and extending lengthwise in a general direction transverse to the direction of reciprocation of the feed-bar, said feed-bar and said arm having tongue and groove formations extending in the direction of said longitudinal reciprocation to enable adjustment of said arm longitudinally of said feed-bar, means for securing said arm in adjusted position on said feed-bar,- connections from said shaft to said arm for causing pivotal movement of the bar in relation to said member, and a feed-dog connected" with said arm, the connection between said feed-doga-nd said arm being: arranged to enable tilting of the feed-dog in a plane perpendicular to the axis of the; main shaft.
  • bracket and said feed bar having cooperating faces in a plane perpendicular to the axis of said shaft, means for confining relative adjustment of said bracket and feed bar to a direction parallel with the longitudinal reciprocatory motion of said bar and for retaining said faces in adjusted relation to each other, said bracket extending lengthwise in a direction generally transverse to said feed-bar, means connecting said bracket to said drive shaft arranged to impart movement to said bracket in a direction transverse to said longitudinal reciprocatory motion, and a feed-dog connected to said bracket and receiving four-motion movements therefrom, the feeddog being pivotally connected with said bracket and being so arranged as to enable tilting of the feed-dog in a plane perpendicular to the axis of the main drive shaft.
  • a drive shaft a feed-bar, means connecting said shaft with said feed-bar to impart forward and backward motion to said feed-bar, the feed-bar having a vertical flange at one end thereof, the flange being perpendicular to the axis of the drive shaft, a bracket fastened to said bar, said flange and said bracket having faces provided with interengaging groove and lug means thereon whereby the bracket may be adjusted longitudinally of the feed-bar, means to secure the bracket to the feed-bar in adjusted position, a feed-dog holder fastened to said bracket, a feed-dog positioned in said holder and fastened thereto, means affording a pivot and serving to secure said feed dog to said holder, said holder being pivotally mounted on said last mentioned means and being capable of angular adjustment about said means, and means for retaining said holder in adjusted position.
  • a drive shaft in combination, a drive shaft, a rock member, connections from said shaft for rocking said member forward and backward upon rotation of said shaft, a feed-bar connected with said rock member for longitudinal reciprocation thereby, a C-shaped bracket connected to said feed-bar, the bracket being adjustable longitudinally of said feed-bar and confined to such adjustment in relation to said feed-bar, means accessible from the side of said bracket for securing the same to said feed bar in any adjusted position, connections from said drive shaft to said bracket for imparting up-and-down motion to said bracket, a feeddog holder having a channel therein, a feed-dog having an arm fitted within said channel, and a screw fastening said feed-dog and said holder to said bracket, said holder being arranged for angular adjustment about said screw.
  • a rock member carried by said frame, connections from said drive shaft for rocking said member, a feed-bar pivotally connected with said rock member, said feed-bar having at its forward end a laterally projecting part which extends longitudinally toward the free end of said drive shaft and overlies the latter, a bracket arm connected with said feed-bar adjacent the end of said part, the connection between said arm and feed-bar being such as to enable relative adjustment thereof only in a direction longitudinally of the main axis of said bar, means accessible from the side of said bracket arm for securing the same to said feed bar, and a feed-dog secured to said bracket arm.
  • a sewing machine having a main drive shaft and a frame to support said shaft, a feed-bar driven forwardly 7 and backwardly by said drive shaft, a bracket adjustably connected to said feed-bar and confined for adjustment longitudinally thereof, means extending through said bracket for securing said bracket to said feed bar, connections from said drive shaft to said bracket arranged to impart up-and-down motion to said bracket and through the latter to said feed-bar, a feed-dog, and means connected to said bracket to support said feed-dog, said feeddog supporting means being angularly adjustable on said bracket and arranged to tilt said feed-dog in a plane perpendicular to the axis of the main drive shaft, and said 1,145,620 ,Seymour July 6, 1915 1,817,727 Wohlpart Aug. 4, 1931 1,992,781 Smith Feb. 26, 1935 2,529,573 Ritter Nov. 14, 1950 2,530,860 Christensen et a1 Nov. 21, 1950

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US221562A 1951-04-18 1951-04-18 Sewing machines Expired - Lifetime US2749859A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR1050898D FR1050898A (en, 2012) 1951-04-18
US221562A US2749859A (en) 1951-04-18 1951-04-18 Sewing machines
DEU1547A DE937684C (de) 1951-04-18 1952-02-10 Naehmaschine mit Viertakt-Stoffschieber
GB9644/52A GB712147A (en) 1951-04-18 1952-04-17 Improvements in or relating to sewing machines
US299534A US2762454A (en) 1951-04-18 1952-07-18 Sewing machine lubrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US221562A US2749859A (en) 1951-04-18 1951-04-18 Sewing machines

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Publication Number Publication Date
US2749859A true US2749859A (en) 1956-06-12

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US221562A Expired - Lifetime US2749859A (en) 1951-04-18 1951-04-18 Sewing machines

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US (1) US2749859A (en, 2012)
DE (1) DE937684C (en, 2012)
FR (1) FR1050898A (en, 2012)
GB (1) GB712147A (en, 2012)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3478709A (en) * 1966-11-17 1969-11-18 Irving George Fischbein Sewing machine
US4159004A (en) * 1978-04-28 1979-06-26 The Singer Company Work feeding mechanism for sewing machines
FR2524508A1 (fr) * 1982-03-31 1983-10-07 Union Special Gmbh Dispositif de lubrification de paliers excentres de machines a coudre

Families Citing this family (2)

* 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
CN108082594B (zh) * 2018-01-09 2024-06-21 浙江爱易特智能技术有限公司 一种纸箱封包机机头

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1145620A (en) * 1909-06-12 1915-07-06 Union Special Machine Co Sewing-machine.
US1817727A (en) * 1927-01-11 1931-08-04 Union Special Machine Co Feeding mechanism for sewing machines
US1992781A (en) * 1932-06-16 1935-02-26 Union Special Machine Co Feeding mechanism for sewing machines
US2529573A (en) * 1947-11-12 1950-11-14 Singer Mfg Co Oil metering device for sewing machines
US2530860A (en) * 1946-09-04 1950-11-21 Union Special Machine Co Sewing machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE495836C (de) * 1927-11-13 1930-04-11 Union Special Maschinenfab Stoffschieberantrieb fuer Naehmaschinen
US2121532A (en) * 1935-12-17 1938-06-21 Union Special Machine Co Feed mechanisms for sewing machines
DE664968C (de) * 1936-06-05 1938-09-10 Casas Robert Ramon Stoffschieberantrieb an Naehmaschinen
US2324861A (en) * 1941-03-01 1943-07-20 Singer Mfg Co Feeding mechanism for sewing machines
US2549057A (en) * 1948-05-08 1951-04-17 Peerless Sewing Machine Compan Sewing machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1145620A (en) * 1909-06-12 1915-07-06 Union Special Machine Co Sewing-machine.
US1817727A (en) * 1927-01-11 1931-08-04 Union Special Machine Co Feeding mechanism for sewing machines
US1992781A (en) * 1932-06-16 1935-02-26 Union Special Machine Co Feeding mechanism for sewing machines
US2530860A (en) * 1946-09-04 1950-11-21 Union Special Machine Co Sewing machine
US2529573A (en) * 1947-11-12 1950-11-14 Singer Mfg Co Oil metering device for sewing machines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3478709A (en) * 1966-11-17 1969-11-18 Irving George Fischbein Sewing machine
US4159004A (en) * 1978-04-28 1979-06-26 The Singer Company Work feeding mechanism for sewing machines
FR2524508A1 (fr) * 1982-03-31 1983-10-07 Union Special Gmbh Dispositif de lubrification de paliers excentres de machines a coudre

Also Published As

Publication number Publication date
DE937684C (de) 1956-01-12
FR1050898A (en, 2012) 1954-01-12
GB712147A (en) 1954-07-21

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