US1861068A - Sewing machine cutting-attachment - Google Patents

Description

May 31, 1932. 2. ROUTTENBERG 1,861,068

SEWING MACHINE CUTTING ATTACHMENT 7 Filed Jan. 20. l930 21. xii-- .L A: //14 l 4 l :E, n 251 ZACH/i PIA flour-rams any,

INVENTOE;

Patented May 31, 1932 "ZACHARIA 'ROUTTENBERG, OF LOS ANGELES, CALIFORNIA SEWING MACHINE CUTTING-ATTACHMENT Application, filed January 20, 1930. Serial No. 422,049.,

This invention relates to devices used for cutting theedge of cloth and the like material handled underthe sewing machine to result in a clean cut parallel to the stitching pro- ,ducedby the sewing'm'achi'ne. a

' One ofthe objects of this invention is to provide an attachment designed to be applicable to any common sewing machine whereby such. a jsewing machine is transformed into a combination cutting. and sewing machine.

Another object is to provide means whereby the cutting mechanism is automatically held in inoperative position when not used. Another object =-is to provide operating means to be made use of at will of the op erator to either interengage the cutting and sewing mechanisms for a combined cutting and sewing, operation or to disengage the mechanisms to leave the cutting mechanism in inoperative position while the sewing 7 v I v a different sewing lma'chlnes' mayr be ofd1fi'ermechanism is in a condition to operate in the normal manner of such mechanisms of any common sewing machine. 7

Other objects will appear from the following description and appended claims as well as from the accompanying drawings, in which- I 1 Fig. 1 is a fragmentary side elevation of the head portion of the free end of the arm of a sewing'machine in general outlines having inserted therein a bar with cutting blade to cooperate withthe. other mechanisms generally found and provided in sucha'head, a needle-bar with needle" and a presser-bar with resser-foot being also roughly outlined in their cooperative positions in relation to the cutting mechanism of this new attachment. Fig. 2 is asection on liner22 of Fig. 1 through the needle-bar and through the cuttor-bar illustrating an engaging pin and knob in inoperative position and in top plan view. F ig. '3 is a-fragmentary front elevation of cutter-bar. v Fig. 4 is a horizontal section similar tothe oneillustrated in Fig. 2, illustrating a slightly modified form of engagement.

While combination cutting and sewing 'machines are known, the principal feature with the presser-foot 7. V v a A cutter-blade 8 is provided on this new the cutting blade attached to the end of the of this invention is to provide attachment by which any common sewing machine can be transformed into such a combination cuttingand sewingmachine, at the same time leaving the sewing machine in a condition that it can still be used'as such with the cutting mechanism in inoperative position.

Any sewing machine is commonly provided with a needle bar as indicated at 4 with a needle; 5 attached to the'lower endrfi A presser-bar 6 is p ovided at its lower end attachment in suchamanner as to become disposed sidewise of the presser-foot 7 The cutter-blade 8 is attached to. thelower end of thecutter-bar 9, which is shiftably mounted on the'head 10 on the frontf endof the arm of a, sewing machine, not shown in the kn v ir i Z- L'lhe 'head on-thefreeend of theilairm of ent shapes and designs, and the outline used in the drawingstogether with-the manner or I parts disclosed for holding the 'cutter-ba rto 'the head must therefore not be considered final or exclusive sincefor'th'e' above reason suchparts must varyon difierent sewing chines especially so since 1 this new attachment is to be.v used as an additional; mechanisnito be applied to any alreadyexisting sewing machine.

' The form of the cutter-bar too, therefore,

must be different for theiattachments'gf'or different sewing-machines. {As illustrated, in the drawings the cutter-bar 9 is bent in its lower portionasindicated at .13, to bring the attachedcutterblade 8 into the mostdesirable position'in relation to the needle to the presser-foo't, however, for the above reasons} the bending 1 'orforining ofth'e bar 9 must depend on ex- 7 isting conditions in sewing machines; T -The" upper end 14- of the cutter bari'is bent,

*andia spring 'l5 is inserted between this bent end 14 and the top of the head 10 .ofthe arm.

* of the sewing machine, to holdthe cutter-bar with the cutting blade in inoperative position; and adapted to yield for the downwargd 1 @uttifig m v men s w en thers lttingeiteqb- 99 ment is operatively interconnected with the sewing mechanism.

A catch or engagement is illustrated in Fig. 2 in detail, partly also distinguishable 5 in Fi 1. The support or member 16 is shifta ly and turnably mounted in the crosshead 17 a spring 18 being provided on the back Gm one-Head whereby the member 16 is normally pressed in the direction of the arrow 19. The member 16 is provided with an engaging-pint; which outer or front face of the cross-head 17 when in inoperative position izn which the whole en gement is illustrated in Figs. 1 and 2, w ile this pin c'an be made topass intQ-thehole 91in the cross-head 17 and into .ZQI the cutter-liar 91in engaging Toibni' the ggggement into inoperative a "tiong e. r 16 .is simply, grasped o'b'23amd drawn against the tens ennf the :spring 18 until the pin 20 is with- Bmzn'i'mm the slot 22 and ole 21,, when the Q, 1 ment may simply be turned nifiherlto the tor to the right until the free ?il in '21 comes to abut against the acebr I11 materialof the cross-head 17, in which the engagement will remain tensionofthe spring 18.

itively short .mevement issuflicient for vthe 1pelration while the needle-bar4 is to move comparatively ,far

5' 550m and .3 .ing machine for its proper operation.

The cuss-head .17 is-secured to the needle- I convenient manner, a Set-screw .indicatndin the drawings 'hut various .oflmrwiaiems may bemused iplr this pur- 1m n princip y on t e construcflmgnf-the erent or suitable parts of the muS-wmngmaohmes.

A mofifiediorm of-engagement .is i a in" Fig. 4.. The block 25 is sestand in themss-head ll'ltby the screw 26. .mins'z lie .shiftahle within the block 25 under the tension of theis ring .28, having *1 29-31430 by which the pin .canbe lmldinitl adjusted positions, for,

In either interengagingithe cutter .and needle has, a! intemupting auch engagement so that scan move independently (If the m has. The locking-pin 31 under itheiten- Giomdthe W32 serves .toiholdthe pin:27

ll v ed positions by means of MMQ9-HKl-30, Y

(hm described my invention, 1

alfllachmentyin combination u wflefibmmil I ramd'the' hesd of thezam d-wltfing machine, acntterlbar shiftahly m an said' head mith its lower cutting 5D in' v lelafii'on to the lower end of mndede-baqmeans fox-normally hold-V .5 'ifig'ihc cmer-bar 'hi it's uppermost inoperaslot 22 is provided since a comparaow the needle-plate ofthe sew tive position, a cross-head adjustably mounted on the said needle-bar extending sidewise to the cutter-bar and having an aperture, the cutter-bar having a slot in alignment with said aperture, and an engagement shiftably and turnably mounted on said cross-head having a pingortion adapted to extend through the ca 'apttln a andasldt to; operatively engaging the said needle-bar with said cutter-bar and including a tension means for m the gement against the cross-head in engaging position as well "as in inupurfliwe posltion.

2. In a cuttin attachment, in combination of a sewing machine, operating means-extending from the needle-bar in a sidewise direction and including anengaging member, and Ya cutter bar hawing a slot to- .slidingl receive the said aging member and adhpted .tobe'operate giy the needle-bar whens'a'ide 5p= 1 member comes into contact with an end w l ofsaid slot.

In testimony that I claim the foregoing as ti l

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