US1572957A - Shoe-sewing machine - Google Patents

Description

Feb. 16 1926.

J. H. REED SHOE SEWING MACHINE 2 Sheets-Sheet 1 Original Filed Jan. 22, 1921 Feb. 16 1926.

J. H. REED SHOE SEWING MACHINE Original Filed Jan. 22, 1921 2 Sheets-Sheet 2 Patented Feb. 16, 1926.

entree stares earner c rries.

JAMES H. REED, 0F SWAMPSCOTT, MASSACHUSETTS, ASSIGNCR, BY MESHE ASSIGN IEEN'IS, TO UNITED SHOE MACHINERY CORPORATION, OF PATERSOI T, NEW JER- SEY, A CORPORATION 0F NEW JERSEY.

SHOE-SEWING MACHINE.

Original application filed January 22, 1921, Serial No. 439,255. Divided. and this application filed. August 12, 1921. serial No. 491,694.

To all 10. mm may concern.

Be it known that 1, JAMES H. REED, a citizen of the United States, residing at Swampscott, county of Essex, State of hflassachusetts, have invented a certain new and useful Improvement in Shoe-Sewing h lachines, of which the following is a specification, reference being bad therein to the accompanying drawings. 3

This invention relatesto shoe sewing machines of the type shown and'described' in my prior application for Letters Patent filed January 22, 1921, Serial No. 439,255, of wh ch this case is a division, the machine shown in said application being intended primarily for use in the manufacture of McKay shoes although also capable of use in many other places, as, for example, for stitching along the shanks on the inside of shoes of the Goodyear welt type.

lleret'ofore in the manufacture of McKay shoes thesole has been stitched tothe upper and the insole by a seam located inside the shoe, and, therefore, it has been customary to use a chain-stitch sewing ma chine. The machine shown and described in myprior application aforesaid s'ewsa lock-stitch seam and has a straight barbed needle and a shuttle supplying a shuttle thread on the outer side of the shoe sole, while on the interior of the shoe there is a cooperating horn and an oscillating looper supplying a cop thread. In accordance With the present invention the horny and looper are of such construction that they can operate in the constricted space inside the toe of a boot or shoe, while a takeup for the cop thread is also associated with the horn, said takeup being 'sutticiently powerful to sink the locks .of the stitches to the desired depth in the outsole.

The more particular objects of the invention, together with means whereby the same may be carried into effect, will best be understood from the following description of one form or embodiment thereof, illustrated in the accompanying drawings, in which Fig. 1 is a side elevation, partly in sect'on of substantially the complete machine.

Fig. 2 is a front elevation of the upper portion thereof. :1'

Fig. 3 is a detail view illustrating the cooperation of the needle and looper.

Fig. 4t is a section on line t of Figure 1.

Fig. 5 is a section on lne 5-45 of Figure 1, showing the operating mechanisms for the talzeup and looper.

Referring to the drawings, there is shown at 11 the base or frame of the machine, at 12 the horn or work support, andv at 13 the framework of the head; The horn is of a size and shape to render it capable of being inserted in thetoe of the shoe and is mounted on the base or frame in such a manner as to permt it to be turned as the sewing At let-is shown a needle which is straight andbarbed. Thc work, which is designated A inthe drawings, is fed by a feed point 5. At 6 is shown a shuttle which feeds the shuttle thread- 7 and cooperates with stitch. Inside the horn is a looper 8 throughwhich the cop thread 19 is fed, and wl'iich also cooperates with the needle'in the formation of the stitch. A takeup is shown at 20 (see Figures 1 and 4.), and. operates on the cop thread. All of the stitch-forming instrumentalities are actuated by a main shaft 27 rotatably mounted in the framework of the head of the machine. The needle 14: is mounted in the lower end of a the needle inthe formation of the reciprocating needle bar 21 guided in the ities .of themachine.

' rgw .i re work feeding devices, the shuttle, and the parts associated with the latter specifically form no portion of the present invention,

being covered bythe claims of other applications filed by me as follows: as to the shuttle; Serial No. 594. 157, filed October 14, 1922; as to the shuttle raceway and associated parts; Serial No. 595,266, filed October 18, 1922; and as to the work-feeding devices; Serial No. 600,224., filed November 11,

bar in .t me with the other worklng instrumentah.

The cam lever "For the purpose of the present descrip- 7 tion it will be sutficient to say that in its operation the needle 14; comes; up through the work with aloop of the cop :thread: 19.

vaught in its barb, whereupon the shuttle 6 is rotated andcaused to pass through said.

loop, carrying with it theshuttle threadand removing said loop from the barb of the needle. The loop is formed about the needle and is withdrawn fronrthe shuttle after the passage of the latter therethrough,

andlthestitch ti htened, by. the loope-riand.

dotted lines in Figure; 3, to permit the passage of the needle andcop thread. The worlesupporting surface of the horn can be made verysniall to permit its insertion in the toe ofa-small shoe-with as much free dom of 'movementas is; possible under the conditions.

The looper-8 is formed on the end of an Y oscillating shaft 68 carried in hearings in the horn. The looper itself has-an eye n and therefore is ofthethreadzifeeding type as distinguishech from loopers which engage the-thread at a certain'pointof the cycle of operations and are at other times disengaged therefrom. Thelooper shaft 68' is drilled longitudinally to provide aipassage; 62),.and the thread 19 passes through the passage, thence past the bent portion of the looper, thence-through the eye a, andithence through the workl At 70 andl'l isshownia pair of bevel gears; whichconnect: the lower end of the looper. shaftv 68' with thev adjacent end of a. shaft section.72:alsomounted in bearings in the horn 12 and disposed atan angle to theshaft '68.- The lower. endof the shaft '72 is provided with a bevel.1gear.7-3 meshing with a gearJ'TetmOunt-ed on the upper end of .the. shaft 715.

The shafts 72 and: 7 5 and gears 70, Tl, 73 and 7.4 areprovided with axial passagessimilar to the passage. 69 in the shaft 68: and through which the cop thread. 19. passes. The shaft 75 is journalled in ELD'lQIDbGl 113 rigidly secured to the frame of the machine and hasiat its lower end a pinion/(7G engaging a rack77; The rack 7:! is connected to a bell crank 78 pivoted at 7 9 to. the'frame. of the machine. This bell c *ank is operated by a rod 80 (see Figure 5) and a second bell crank 81, one arm of which is provided with a cam roll SQoperating in a. groove in. a cam 83 on the main shaft 27. From the foregoing it will be seen 1 that the movement produced by the cam 83 causes the-looperishaft. 68 to oscillate once for each cycle of operations of the machine. j g

The action off the looper will be readily understood froni Figure In this figure the needle 14 is shown at its lowest posifilQn,' ttrW,l1lCl1 time its barb is below the top of the looper. When the looper oscillates it passes about; the. needle; thereby laying the cop thread in or slightly above said barb. 'lhereafter when the needle 1:5 ,5 the cop thread is caught. bythe barb and 'is carried up throughlthe work, forming the loop.

The COIlStl'llClllOn.OfftlIQlOOPQl is suchthat it is contained:within the hollow endLof-the horn and; can oscillate without interfering with the needle or strikingythe work from.

which it isfully protectedby the horn. In practice-the. side of; the horn adjacent the looper-is cut away toana-keit easier for the operatorv to: thread: up the .machine, but this cutaway portioinis not; sufficient to permit the shoe 2 to 1 interfere with the :movement of, eithen thelooper or! theneedle.

The taheup.20loperates on;thetop thread 'andicompnisesa laterally oscillating finger.

located in the. space between the gearsf73, and 74 which. operatethe looper shaft. sec: tionv 72." This provided with. an eye at through which' the thread: 19- passes. This til takeup finger. isxfixeditoya vertical shaft 8-1 j ournalled in.-the memberl-lSand is located outside the circumference of. thebevel gearT-f andinsid'ethe circularhousing 8.5; on which the: horn islmounted'. The-shaft 84 is.-pro+ vided"; at its lower:end:.with an. arm 86- havinglthereinai slot 817-. This slot receivesa v-pin'88 :carriedtby an arm. 89-.011. aisha -ft 90 journall'ed in: the. member 113v and. having a second 21111191.COllllBCtGClT by a linlc 925 to. a slide 93; a The slide .93 is operatediby a bell crank" lever. 94. pivoted The. bell. crank. levenfl. is operated by a connecting rodr 95 connected; to. one arm 16 of a. rock shaft: f-lfirhaving. a second arm 97 which. carriesa cam. roll 98 travelling in the groove of a cam Q9 mounted .on the main. shaft 27.

Fiom. the foregoing it will be seen. that theta keup fingerQOYentersthe space betweenthe bevel gears 73 and? 4 and is moved out. of:' said space to the position shown in broken lines in Figure 4, pulling the cop thread down vigorously and setting the-lock of the stitch deeply into the channel. oft-he sole;

It will also be seen that, byreason of the factgthat the connections between the takeup or.v stitch-setten 20 and its operating mechanism outside the horn pass through the stationary meinberIllB, said connections rcmainloperatire in all, angular. positions of the horn. and arenot affected; therotation of the latter. A

in combination, a looper, operating mechanism therefor including a pair of interlneshing bevel gears, and a laterally osclllatlng talrenp linger located between said bevel Z}. In a shoe sewing machine and in combination, a looper, operating mechanism therefor including a pair of inter-meshing bevel gears each having a hole theretl'irough for the passage of the thread to the looper, and a talreup linger located between said bevel gears.

4. In a shoe sewing machine and in conr bin-ation, a revolubly mounted horn, a looper having a shaft revolubly mounted inside said horn, a second shaft carried by the horn, a pair of bevel gears connecting the proximate ends of said shafts, a third shaft mounted in a stationary part of the machine, a .pair of bevel gears connecting the proximate ends of the second and third shafts, there being thread passages through said shafts, and a takeup finger movable in the space between said last mentioned pair of gears.

5. In a shoe sewing machine, in combination, a revolubly mounted hollow horn, a looper on a shaft revolubly mounted inside said horn, a shaft at the base of said horn, a pair of intermeshing bevel gears one of which is on said shaft to operate the looper, a tnlrcup linger movable in the space between said bevel gears, operating means for the talaeup finger, and a casing forming a bearing for the horn surrounding the takeup ieehanisn'i.

in testimony whereof I afiix my signature.

JAMES H. REED.

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