US1720658A - Machine for sewing pockets - Google Patents

Machine for sewing pockets Download PDF

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Publication number
US1720658A
US1720658A US32920A US3292025A US1720658A US 1720658 A US1720658 A US 1720658A US 32920 A US32920 A US 32920A US 3292025 A US3292025 A US 3292025A US 1720658 A US1720658 A US 1720658A
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US
United States
Prior art keywords
strips
strip
stitching
sewing
drum
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
US32920A
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English (en)
Inventor
John F Gail
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.)
Simmons USA Corp
Original Assignee
Simmons USA Corp
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 Simmons USA Corp filed Critical Simmons USA Corp
Priority to US32920A priority Critical patent/US1720658A/en
Application granted granted Critical
Publication of US1720658A publication Critical patent/US1720658A/en
Anticipated expiration legal-status Critical
Priority to JP1968010477U priority patent/JPS4326186Y1/ja
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B33/00—Devices incorporated in sewing machines for supplying or removing the work
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B65/00—Devices for severing the needle or lower thread

Definitions

  • My invention relates to improvements in machines for sewing pockets and is of particular value for making pockets in strips of fabric such as are used in the construction of spring filled mattresses ofthe Marshall type, for instance, as disclosed in the Marshall Patent No. 698,529.
  • the principal objects of the invention are to provide an improvedfmachine for connecting a two-ply strip of fabric along a series of spaced lines extending transversely of the strip so as to form a series of pockets in said strip; to provide a machineof the class described which shall be automatic in operation, simple in design, economical to manufacture, operate and maintain and, in general, to provide an improved machine of the character referred to.
  • Fig. 1 is a side elevation of the complete machine.
  • Fig. 2 is a front elevation. of said machine.
  • Fig. 3 is a section taken on the line 3-3 of Fig. 2.
  • Fig. 4 is a section takenon the line 4 -4 of Fig. 3.
  • Fig. 5 is a reverse plan view of the stationary feed gear.
  • Fig. 6 is a section taken on the line 6-6 of Fig. 3.
  • Fig. 7 is a sect-ion taken on the line'7-7 of-Fig. 3.
  • Fig. 8 is a. sectiontaken on the line 8--8 of Fig. 3, and
  • Fig. 9 is a detail viewshowing a portion of the thread cutting apparatus.
  • the main parts of the machine are mounted upon a frame comprising a rear A- frame 20, and a front A-frame 21, integrally connected by suitable girts 22.
  • the rear frame 20 is extended upwardly as shown at 23 in order to form a support for a sewing machine designated as a whole 24 which is equipped with the usual transverse feed, i. e. transversely of the upper arm 25 of the sewing machine.
  • Said sewing machine is preferably of the continuous chain .stitch type and may be single or double thread.
  • the arm 25 is spaced from the born 26 of the sewing machine a somewhat greater distance than with the ordinary sewing machine so as to permit the free assage of certain parts which will be described later.
  • chine will be in a direction transversely ofthe sleeve axis.
  • the front A-frame 21 is offset inwardl as shown at 33 and at its upper end has a as 34 in which is keyed another fixed sleeve 35 which is co-axial with the sleeve 28 previously described.
  • a stout horizontal shaft 36 extending outwardly beyond the sleeve 35.
  • a worm gear 37 with which meshes a worm 38 keyed on a cross shaft 39.
  • Said cross shaft 39 is
  • the other end of the horizontal cross shaft 39 is supported to rotate in a bearing 42 at the upper end of a floor' standard 43 and on the extreme outer end of the shaft 39 there is keyed a worm gear 44.
  • Said worm gear 44 is driven by a worm 45 (see Fig. 3) on a longitudinal horizontal shaft 46 also supported in suitablebearings on the floor standard 43 and A-frame 20.
  • the shaft 36 will be drivenvat a very slow speed compared gear ratio adopted will be controlled by the distance around the periphery of the drum 32 and the feed adjustment of the sewing machine. If the periphery of the drum measures 100 inches and if the feed of the sewing machine is one-tenth of an inch, then the gear ratio will obviously be approximately 1060 to 1, although in some cases it may be desirable to run the drum a trifle slower. than the theoretical speed, so as to prevent puckering of the fabric.
  • the outer drum 52 which may be of sub-- stantially the same diameter as the inner drum 32 and coaxial therewith, is supported by a spider 53 to the periphery 'of which the drum 52 is rigidly secured. as by rivets 54.
  • the hub of said spider 53 is keyed to the shaft 36 so that the said spider 53 and drum 52 will rotate with said shaft. In order to transfer said rotary movement to the inner drum 32 so that both of said drums will ro-.
  • annular gear teeth 55 and 56 are respectively meshed with small spur pinions 57 and 58, keyed to the opposlte ends of a small shaft 59 rotatably mounted in the lower end of a depending arm 60, keyed to the outer end of the fixed sleeve 28 previously described.
  • the machineherein illustrated is designed to operate upon a set of twelve strips of fabric, each strip comprising a strip of fabric folded or doubled longitudinally so that when the transverse lines of stitching are formed therein, the pockets will be defined therein and completed except for the final closing of one end thereof after the insertion of the springs.
  • the twelve unsewed two-ply strips of fabric are put up in the form of rolls 61, said twelve rolls'being supported by the outer drum 52 at circumferentially equi-spaced intervals.
  • the completed strip with the pockets sewed therein is wound up on the inner drum 32, also in the form of a roll 62, each of said rolls 62 being aligned with the unsewed strip-roll 61.
  • the paying out and take-up mechanisms for the strips 63 will now be described.
  • the raw material is wound upon spindles 64-. which are removably mounted and adapted to revolve in pairs of suitably spaced brackets or standards 65, bolted to theouter end of the outer drum 52.
  • the strip 63 is taken off from the bottom of the roll 61 and passes through or between a pair of gripper rolls 66 and 67.
  • Each of the bottom rolls 67 is journaled on a shaft rotatably supported in inwardly extending arms 68 'and 69 bolted to the inner periphery of the outer drum 52.
  • the outer gripper rolls 66 are mounted upon shafts 70, the ends of which are journaled in bearing blocks 71 slidably mounted in standards 72 bolted to the outer periphery of the outer drum 52. Springs 73 and adjusting screws 7 4; enable the pressure of the gripper rolls to be properly adjusted to fit the conditions. 1
  • the gripper rolls 66 and 67 serve as capstans for controlling the paying out of the strip from the raw material spools or rolls 61.
  • the capstan roll 6 7 is positively rotated a suflicient amount to advance the strip a distance equal to the space between the transverse stitch lines.
  • Such positive movement of the capstan roll 67 is effected by the following mechan1sm.-
  • a spur gear 76 which meshes with an intermediate gear 77 rotatably mounted on the arm 69.
  • Said intermediate gear 77 meshes with an inner spur gear-78 which is keyed to a shaft 79, the ends of which are journaled in the inner ends of the arms 68 and 69.
  • a star gear 80 having as teeth a relatively small number of round radially extending pins 81 which mesh with worm threads on the outer periphery of a spider 82, keyed to the inner end of the sleeve 35 previously described.
  • said worm threads comprises a series of oblique teeth 83 occupying a comparatively small arc of the lower circumference of the spider 82.
  • a guide rib or thread 84 which extends continuously around the spider 82 a suflicient distance to connect the fragmentary cross threads 85 and 86 at the opposite ends of the series of operative teeth or threads 83.
  • the take-up devices are best shown in Figs. 1,-3 and 6.
  • a series of pairs of brackets 85 in which there are removably and rotatably mounted shafts 86 carrying spools 87.
  • the surface of said spools 87 may be fanged or roughened so as to grip the end of the-strip 63 at the commencement of the winding up operation.
  • Said shafts 86 are fitted with a friction clutch device 88 through which the shaft may be frictionally driven, said friction clutch 88 constituting in effect, a slip drive. I On the end of said shaft 86 (see Fig.
  • the position of the rack 94 with reference to the position of the actuating teeth 83 of the fixed worm spider 82, is such that the gear 93 will commence to rotate and exert a winding up tendency upon the strip 63 slightly in ad- Vance of or not later than the time when the star gear 81 will commence to rotate and operate the capstan roll 67.
  • the strip 63 will always be maintained taut, since the rack 94 will preferably occupy a slightly greater are than the arc through which extend the 0perative teeth 83 of the capstan spider 82.
  • a small guide roll 95 intermediate the stitching zone and the brackets 85.
  • a mechanism for this purpose is illustrated in Figs. 1 and 3. It will be observed that to the upper arm 25 of the sewing machine, I secure a bracket 96 which supports a solenoid magnet 97 having its axis parallel with the axis of shaft 36. I also secure to said sewing machine arm 25, another bracket 98 on which is fixed an axially horizontal pivoted pin 99.
  • the actuating rod 100 of the solenoid has fixed therein a transverse pin 101 to which is pivotally connected the inner end of a link 102.
  • the solenoid plunger 100 is straddled by the forked or slotted upper end of the vertical arm of a bell crank lever 103 rocking on pin 99.
  • a pair of springs 104 and 105 Surrounding said solenoid plunger 100-and on opposite sides of the bell crank arm 103, are a pair of springs 104 and 105.
  • the outer end 106 of the bell crank is made in the form of a shear knife 107 and is further provided with an extension ear or lug 108 to which, by means of a pin 109, there is pivotally connected a lever 11.0.
  • Said lever 110 is pivotall connected at its upper end to the outer en of the link 102 and the lower end of said lever 110 is made in the form of a shear knife which co-operates with the shear knife 107, previously referred to.
  • the shear knife 107 and 110 are so positioned as to form in effect, an open scissors positioned with its opening immediately above the line of stitching.
  • the solenoid 97 is energized.
  • the arm 103 and link 102 move in unison or substantially in unison during the first portion of the movement of the plunger. This causes the scissors to drop over the thread.
  • spring 104 is completely compressed, the arm 103 can move no further and subsequent movement of the plunger 100 will simply move the link 102.
  • the shear knife 107 being then stationary, although in operative position, the link 102 will, in its outward movement, close the scissors and snip the connection.
  • the energizing of the solenoid 97 at the proper times in the revolution of the drum 32 is effected by the following mechanism and connections.
  • a plurality of small rollers 111 there being one roller for each strip or space between strips.
  • Said rollers 111 are properly spaced. and positioned so that at the proper time, when it is desired to energize the solenoid, said roller 111 will engage the rounded head 112 of plunger 113.
  • Said plunger 113 is positioned with its axis parallel with the axis of the machine and is mounted to slide in ,a fixed block 114.
  • the plunger 113 isflpressed outwardly by means of a coiled spring 115 surrounding the shank of the plunger and interposed between its head 112 and block 114.
  • a head or collar 116 on the rear end of plunger 113 limits the movement of the plungerdue to the spring 115.
  • the head 116 engages an insulated contact spring 117 having a contact 118 adapted to engage the contact 119 in a companion contact spring 120 whenever the plunger 113 is pushed inwardly. It is manifest that by including the contacts 118 and 119 in the circuit of solenoid 97 and the battery 121, the solenoid 97 will be energized Whenever one of the rollers 111 engages the head of the plunger 113.
  • the drums are rotated continuously and the sewing machine also operates continuously to form a continuous line of stitching which, as to each of the two-ply strips 63, forms successive transverse pocket boundaries spaced along the length of the strip. It will also be manifest that said boundaries are successively formed as a regular sequence of operations or movements of the strip relative to the stitching head.
  • the object of having more than a single strip being operated upon at the same time and on the same drum, is to prevent the loss of time and the loss of stitching effort intermediate the times when the same strip is being stitched to form the spaced pocket boundaries.
  • the sewing machine can be operated continuously at high speed and the effective stitching time is a high percentage of the total stitching time because of the relatively small interval or space between the adjacent edges of adjacent strips. It will be manifest also that in view of the relatively slow rotation of the drum, it is possible to refill or replenish the raw material supply of spools 61 and remove the finished material spools 87 while the machine is running. However, this particular feature is not so important when there is used a sewing machine having a large gap permitting a formation of a roll of finished strip having a comparatively large diameter.
  • Apparatus for connecting two-ply strips of fabric along a series of spaced lines each extending transversely of the strip so as to form a series of pockets therein comprising a sewing head, a carrier for supporting a plurality of said strips, means for operating the sewing head, and means synchronized with the sewing head for effecting a continuous relative movement of the sewing head and all the strips crosswise of the latter and successive relative movements of said sewing head and the individual strips lengthwise of the latter during said continuous relative movement.
  • Apparatus for connecting a two-ply strip of fabric along a series of spaced lines each extending transversely of the strip so as to form a series of pockets therein comprising a sewing head, a carrier for supporting a plurality of said strips, said carrier having means for effecting intermittent endwise movements of the strips thereon successively, means for operating the sewing head and means for effecting relative movements of the sewing head and strips crosswise of the latter in a continuous sequence, there being provided means for positioning the sewing head along said strips at definite spaced points corresponding to the desired lines of stitching.
  • Apparatus for connecting a two-ply strip of fabric along a series of spaced lines each extending transversely of the strip so as to form a series of pockets therein comprising a sewing head, a rotary carrier for supporting a plurality of strips in substantial parallelism with the carrier axis, said carrier having means for effecting intermittent endwise movements of the strips thereon successively, means for operating the sewing head and means for effecting relative movement of the sewing head and strips crosswise of the latter.
  • Apparatus for connecting a two-ply strip of fabric along a series of spaced lines each extending transversely of the strip so as to form a series of pockets therein comprislng a'sewing head, a rotary carrier for supporting a plurality of strips, said carrier havlng means for effecting intermittent endwise movements of the strips thereon successively, means for operating the sewing head mechanism and means for effecting relative movements of the sewing head and strips crosswise of the latter in a continuous sequence, there being provided means operative intermediate said relative movements for positioning the sewing head along said strip at definite spaced points corresponding to the desired lines of stitching.
  • Apparatus for connecting a two-ply strip of fabric along a series of spaced lines each extending transversely of the strip so as to form a series of pockets therein which comprises a stitching head, means for conveying a plurality of said strips arranged in substantial parallelism successively through the stitching zone and in the direction of the feed of the stitching head, means for effecting relative movement of said stitching head and strips lengthwise of the latter, means for actuating the stitching head and conveyer means in substantial synchronism so as to form a continuous line of stitching extending transversely across a plurality of said strips and means for severing the chain of stitching intermediate adjacent strips.
  • Apparatus for connecting two-ply strips of fabric along spaced lines extending transversely of the strips so as to form a series of pockets therein which comprises a stitching head, a continuous means for supporting a plurality of strips in substantial parallelism and for conveying said strips successively in a direction transverse of the strips through the stitching zone in the direction of the feed of the stitching head, means for effecting successive endwise movements of said strips on said supporting means, and means for operating said stitching head.
  • Apparatus for connecting two-ply strips of fabric along spaced lines extending transversely of the strips so as to form a series of pockets therein which comprises a stitching head, a continuous means for supporting a plurality of strips in substantial parallelism and for conveying said strips successively in a direction transverse of the strips through the stitching zone in the direction of the feed of the stitching head, means for effecting intermittent endwise movements of said strips successively on said supporting means, and means for operating said stitching head and said conveying means continuously in synchronism.
  • Apparatus for connecting a two-ply strip of fabric along a series of spaced lines each extending transversely of the strip so as to form a series of pockets therein which comprises a stitching head, a continuous means for supporting a plurality of strips in substantial parallelism and for conveying said strips successively in a direction transverse of the strips through the stitching zone in the direction of the feed of the stitching head, means for effecting relative movement of said stitching head and strips lengthwise of the latter, means for operating said stitching head, and means synchronized with the move ment of the conveying means for severing the chain of stitching extending between adjacent strips.
  • Apparatus for connectin a two-ply strip of fabric along a series of spaced lines each extending transversely of the strip so as to form a series of pockets therein which comprises a stitching head, a continuous means for supporting a plurality of strips in substantial parallelism and for conveying said strips successively in a direction transverse of the strips through the stitching zone in the direction of the feed of the stitching head, means for effecting relative movement of said stitching head and strips lengthwise of the latter, means for operating said stitch ing head and said conveying means continuously in synchronism, and means synchroing its axis arranged transverse to the direction of feed of the stitching head and adapted to form a support for a plurality of strips 4 arranged successively on said drum parallel with the axis thereof, and means on said drum for successively moving said strips endwisc between successive stitching operations.
  • Apparatus for connecting a two-ply strip of fabric along a series of spaced lines each extending transversely of the strip so as to form a series of pockets therein which comprises a stitching head, an endwise stationary rotary drum having its axis arranged transverse to the direction of feed of the stitching head and forming a support for a plurality of strips arranged successively on said drum parallel with the axis thereof, means for rotating said drum and operating said stitching head continuously in synchronism, and means on said drum for effecting endwise movements of said strips on said drum in a direction parallel to the axis of the latter.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Windings For Motors And Generators (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Sewing Machines And Sewing (AREA)
US32920A 1925-05-26 1925-05-26 Machine for sewing pockets Expired - Lifetime US1720658A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US32920A US1720658A (en) 1925-05-26 1925-05-26 Machine for sewing pockets
JP1968010477U JPS4326186Y1 (en, 2012) 1925-05-26 1968-02-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US32920A US1720658A (en) 1925-05-26 1925-05-26 Machine for sewing pockets

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US1720658A true US1720658A (en) 1929-07-16

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JP (1) JPS4326186Y1 (en, 2012)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299843A (en) * 1964-08-21 1967-01-24 Ind Ovens Inc Splicing method and apparatus
US3650231A (en) * 1969-08-11 1972-03-21 Louis E Tinari Rotatable work support for a sewing machine
EP0150971A3 (en) * 1984-02-02 1985-08-21 Kabushikikaisha Barudan A curved cloth stretch frame construction for an embroidery sewing machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5619379Y2 (en, 2012) * 1974-02-28 1981-05-08
JPS5711380Y2 (en, 2012) * 1977-07-28 1982-03-05

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299843A (en) * 1964-08-21 1967-01-24 Ind Ovens Inc Splicing method and apparatus
US3650231A (en) * 1969-08-11 1972-03-21 Louis E Tinari Rotatable work support for a sewing machine
EP0150971A3 (en) * 1984-02-02 1985-08-21 Kabushikikaisha Barudan A curved cloth stretch frame construction for an embroidery sewing machine

Also Published As

Publication number Publication date
JPS4326186Y1 (en, 2012) 1968-11-01

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