US1752096A - Sewing-machine ruffler - Google Patents

Description

March 25, 1930. LAWTQN ET AL 1,752,096

SEWING MACHINE RUFFLER Filed May 23, 1928 Patented Mar. 25, 1930 UNITED STATES PATENT OFFICE HARRIS A. LAWTON AND ANDREW J. CARMICHAEL, OF NEW HAVEN, CONNECTICUT, ASSIGNORS TO THE GREIST MANUFACTURING COMPANY, A CORPORATION OF CON SEWING-MACHINE RUFFLER Application filed May 23,

This invention relates to that class of sewing machine rufliers, generally known as five-stitch ruiilers, in that they have heretofore usually been constructed to make a ruflle at each stitch of the sewing machine, or at each five, or a greater or lesser number of stitches; and the invention has for its object to provide arufiier of the class referred to in which the adjustment from one class of work to the other may be readily and easily effected. The invention is adapted for use in a rulfler provided with a single ratchet wheel constructed with deep and shallow notches,

by which the intervals of the strokes of the ruliling blade may be controlled, or with two ratchet wheels mounted on the same pivot pin and constructed with a plurality ofdeep notches andone of which ratchet wheels is other position occupied by the adjustable ratchet wheel only a single deep notch of the adjustable wheel will be in registerwith a I deep notch'of the other wheel; so thatastroke of the rufliing blade will occur only at each ten or twelve or any other desired number of stitches of the sewing machine. The improved rufii'er is also so constructed that, by

"proper adjustment, a rufliing stroke will be imparted to the rufiiing blade at each stitch of the sewing machineyor the rufilingblade 'may be thrown out of action entirely when plain sewing is to be done.

The present invention relates more particularly to'the means for operating the ratchet wheels by the use of two pawls, one of which is fixed relative, to a pawl carrier, and the i other of which is adjustable on said carrier,

so that said adjustable pawl may be readily thrown out of operation when the rufiiing blade is to make a stroke at each stitch of the sewing machine.

In the accompanying drawing Figs; 1 an 1928. Serial No. 280,036.

2 are opposite side views of a ruflier embodying the present invention. Fig. 3 is a plan view of the same; Fig. 4 is a detail view of the pawls and some adjacent parts, and Figs. 5, 6 and 7 are detail views of the ratchet wheels.

Referring to the drawing, 12 denotes the frame of the rufller provided, as usual, with a forked forward end 13, to adapt the same for attachment to the presser bar of a sewing machine. Mounted on the frame 12, by a pin or rivet 14, is the main operating lever 15 forked at its forward end for engagement with a pin or screw carried by the needle bar of a sewing machine; and, fulcrumed on the pin or rivet 14, is a pendulous lever 16 jointed at its lower end to the rufiiing blade carrier 17 to which latter is attached the ruffling blade 17. The pendulous lever 16 is provided with an arm 16* positioned beneath a contact screw 18 carried by the operating lever 15, said screw being frictionally retained in any desired position of adjustment by a spring 19 mounted on said operating lever 15.

Mounted on the pin 14 are two ratchet wheels 23 and 24, adjacent or contiguous to each other. The outer ratchet wheel 23 is provided with three deep notches 23 and 23", the periphery of saidwheel being shown as plain between said notches. The ratchet wheel 24 is provided with two deep notches 24 and with a plurality of shallow notches 24 between each of said deep notches. In the construction shown there are five of these shallow notches between said deep notches, thus providing for a stroke of the ruflling blade at each six stitches of the sewing machine, although it will be understood that said ratchet wheel might be constructed with a greater or lesser number of these shallow notches between each of the deep notches 24 The ratchet wheels 23 and 24 may be held in frictional engagement with each other, so

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hit-5 enter the inner part of a deep notch 24" of the ratchet wheel 24, so as to hold the ratchet wheel 23 in either of these positions of adjustment. The ratchet wheel 23 is provided with an outwardly extending pin or pins 21 for convenience in adjusting said wheel circularly relative to the ratchet wheeli24a This feature of the two ratchet wheelscontaining deep and shallow notches, and one of whichis circularly adjustable relative "tothe other is, however, not-herein-claimed broadly, as this feature is described and claimed in the application of Hugo Maashoif'and George-W. Pratt, filed May 7, 1928,:Serial N 02,75,714.

The pendulous lever 16' is provided with shoulder il6 i ladapted to be I engaged,- by a p awl 26 integral with aspringepressedpawlcarrier ;27 mounted v onthe -t-main operating -.lever 'l5-a11d arranged toengage the -{shoulder lffi t-on the pendulousilever L6 when desired.

The pawl carrier 27 is provided with legs 27 .in which, is rotatively {mounted "bar 28 having at its forward end an integral; pawl 29, said bar being square or of polygonal form in cross section sothat a springfinger 29 bearing against a flatpart ofsaid-bar, will hold said partially rotatableabar indifferent positions to .whichit may be turned. Thev spring fingerv is preferably anextension of the usual torsion-alaspring iby which-the pawl carrier 27. is yieldingly;pressed towards the ratchet wheels. The bar 28 is;provided with a milled head :30 Q by which it may vbe readily turned from the position shown TlIl @Fig. 1 to the positionshowntin ,Fi-gsi3 and 4:, orvice versa. 7

The pawl bar 28 is rot-atively mountedin an -appr,oximately horizontal axis, in the lugs 27 of the pawl-carrier v27 soythatr in its oper- ,1 ative position the pawl 29 on said pawl bar is approximately horizontal, a-s shown; in Fig.

1;,but when said bar is given quarter turn said pawl 29 will beina verticalposition as shown in Figs. 3 and 4t, and willbeout of .registerlaterally with the ratchet wheelsand will thusbe inoperative. 1

,When the ratchetwheel23, is. in thepos'ition of adjustment shown in ;1 the deep notches-23 of said ratchet wheel -.-Wlllib in a register vwith the ,two deepfnotches 249st the ratchet wheel: 24:, and thus, with the ratchet wheels constructed as herein shown the said "pawl29 will fall intosaid deepinotchesQ3 and 24, and willthns permit the :pawl :26

-, to ellg' igethesaid shoulder 16",,onthe pendns i lous lever at eachksi; stitchesrof the sewing c :machine, so aszzto operate-the said ,pendulous lever. andimpart. a forward movementto the truflngublade carrier ,and the rufilng blade .affixedflthereto, the:said pawl 26 ,bfiillfg (held out of; engagement with the-SaidshQUlderlB" ,atiotherftime's. Thisis in -tothe that, excepting when the pawl- 29 isiniitshinonen ,ativlepesiticmerieinthedeenne ehestdtthe f ratchet,wbels theespringpressed nawli wheel 23, and thus the pawl 29 will, in the.

rotation "ofthesaid ratchet wheel-s,*--fall--into the said registering-deep *notches' 23 and 241; to enable the pawl'26 to impart' -a forward *stroke-to-the rufliing blade, at each twelve vstitches; said pawl being held out of said engagement with-the said shoulder 16 durting the. formation iQf'GIGVGIkSt-ltGhBS,

Whenia rufileis to be made, at eachistitchof the: sewing machine the-adjustable ,pawl'z29 will be turnedtothe ,positionshown inQFigs. 43 rand 4, thus throwing git 5 out of operation and permitting .the, fixed pawlj26 to 1 engage e the shoulder 16 on rthe pendulous :lever. 4 l6. When, however, the irufllerg-is to} be t thrown V vout. of operation, for plain sewing, the E pawl carrier 27 will be withdrawn to Lthe position as I Fromthe foregoing it .willi'be understood 7 that the invention provides simple means whereby a ruflier is adapted to :make ,a :ruf- :fling" stroke 1 at .each stitch ofca sewing machine, or betweenv any desired number of. a plurality offstitehes, or maybe thrown out of operation altogetherwhen plainisew-ing istobe'done. a 7' V Having thus describedhour inventionlwe ,claim and desire, to;securedqylLettersPatent:

, 1. In a .sewing machine erniflierytheecombination with. an .openating"lever, a pendu-lons ,lever havinga shoulder,-,and a; rnfliingblade -operatively connected with saidlpendulons' lever, of a ratchet wheel vhavingedeep ,and

shallow notches, a pawl-carrier pivotally mounted ,onsaid ,operatiiiglever a pawlifixed' 1 relative to said pawl-carrier andaan.,adj.ustable pawl -.carried by :aw pawl bar motatively ,mounted on ,said pawl carrier, ;.so that iby sgiving saidbarna. quarter, turn-said pawl will "be out of'register, Ylaterally withasaid,ratchet wheel. 1 2 In la s wingmachii e l fienetheimmbi :nation with an nperating leverya penduleus lever,having a shoulder,randeaeriifilingmlade voperative ly yeonneeted with enets-e15 le e of a-iratchet wheelihaiiingideeptand eshallow notch s, a pawl-carrier ,pi-retally amountedi n aid qnerati gilever and1 a d and adjustable pawls meuntedinn said;

1earrier saidmawleeerrieribavingilw,a a

rotatably mounted in said lugs and relative to which bar said adjustable pawl is fixed, and means for holding said bar in different positions of adjustment.

In testimony whereof we aifix our signatures.

HARRIS A. LAWTON. ANDREW J GARMICHAEL.

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