US1890237A - Sewing machine needle-plate - Google Patents

Description

Dec. 6, 1932. z, ROUTTENBERG 1,890,237

SEWING MACHINE NEEDLE PLATE Filed Jan. 20. 1950 INVENTOR: Z c HA fill) flown/@50 BYM eWI H /5 ATTORNEY.

Patented Dec. 6, 1932 ZAGHARIAROUTTENBERG, or vnos AnGEL s, oarirronnm' SEWING MAom'NE NEEDLE-PLATE t Application filed January 20,; 1930. SeriaI No. 422,047;

This invention relates to devices designed to cover a comparatively large opening above the shuttle and above the feed mechanism v being at the same time the guiding means for the feed member that extends through this plate to the surface over whichthe cloth and the like is handled for sewing purposes.

One of the objects of this invention is to provide a needle plate designed to stay in its 10. place, having suitable provisions made by which various removable parts can be applied.

for cutting narrower or broader edges alongside of the stitching point of the plate. Another object is to provide an exchangeable member as a comparatively small; part of the needle-plate, to take care of any varia tion in the setting and spacing of the cuttingblade in relation to the needle in a sewing machine, this invention involving a special needle-plate particularly type of sewing machines used for a combined edge'cutting and sewing.

Another object is to provide a changeable needle-plate in which the top surface is flush with the surrounding surface of the sewing machine top-plate and smooth in itself with respect to the several parts embodied in this plate. Other objects will appear from the 01- lowing description and appended claim as will {as from the accompanying drawing, in w 1c Fig. 1 is a top plan view of a needle-plate of a sewing machine, illustrating the outline and position of an exchangeable insert by which the cutting edge, to cooperate with the cutting edge of a movable cutting blade, can be arranged at various distances in regard to the needle-hole in the needle-plate and 40 therewith in relation to the needle of a sewing machine to which the needle-plate is applied.

Fig. 2 is a section on line 22 of the combination needle and cutting plate illustrated in Fig. 1.

Fig. 3 is a top plan view of a cutting insert in a slightly modified form in which 'acutting edge has been provided to be farther away from the stitching line than in the ar rangement illustrated in Fig. 1.

shapesfl Thehole8 serves asa 'withregard to the needle-hole, i The edgeof-thematem 1 s1 designed for that riations due to difierent ting blade,

. Fig.4.is a section on line illustrated in Fig. 3. I p I As illustrated in the drawing the larger portion 5 of the needle-plate is of the general outline necessitated by; the opening leftfor and this outline may therefore vary considerably, depending on theopenings, of the dif ferent sewing machines. Theaperture-G for the teed-member 7 Y may also be of difierent the needle ofthe sewing machine;

the insert it:

v this purpose in difierent sewing machines,

Any material, such as cloth and the lilrefis a normally placed over the feed-member;

a suitable relation to the needle-hole 8, to re ceive a desired stitching along a required line 'dewise ot such it stitchingeis'i quent y to b trimmedpr ut, and certain combination sewing andcutting machines havebeen developed for Pu p e-- a v I On difl'erent articles or goods the trimmed edge, however, is desired more or less wide,

"and since the cutting blade in such machines to designed variations the cooperating the needle-plate is made to be adjusted for cutting. different edges, cutting-edge or portion in must be changeable accordingly.

To avoid the necessity of changing'the whole needle-plate as is the common practice, the principal feature surrounding this invention is therefore to design the needle-l plate properto remain in its place within the sewing machine after having once been installed, and to provide a comparatively small exchangeable member to take care of the vating blade that is cooperating with the needle of the sewing machine.-

The needle-plate proper pose lines to receive an insert ll.

settings of the cut- V 39 5 is for this purrecessed as indicated in Fig. 1 by the i 9 to a depth indicated in Fig. 2 at 1 0,

terial in the insert for asuitable depth for the To properly engage and place this insert, 9,? l

on the one hand, and to provide suflicient marecessto take'care of the heavier portion 18' of the insert. V a

A screw 14 serves to hold the insert in its 7 e proper place within the needle-plate proper Whilefor close cutting the cooperating cutting-blade -'may cut against a portion, 15

of the'edge around the first-described recess requiring merely a recess or' cut-out in the end of the insert as indicated at 16, When the I edge is to be-cut Wider the recess is provided withinthe insert at any suitable, point, as for a instance, indicated at 17 in F forming the cutting edge 18. c

To vsafeguard against any clogging up I the cuttingrecess, and to facilitate the reinoval of Waste material from the cutting re- (less, a slanting extension recess119 is provided in theinsert;

clain'1: a r

In'an attachment of the class described, a

Having thus described 'imy invention;

needle-plate-having a recess with an adjoinj ingjape'rture besides the, apertures for a feed I 7 member and for asewing-needle, and an 111- g a "sertfittingin said recess and having a shoul- V v dei ed portion-extending.downwardly to 3311 v gage insaid adjoining aperture, theto'p of the insert beingflush with the top of the said plate, and the insert'being recessed whereby a cutting edge is 'form'ed in the top of the insert along. a line in the direction in which In'aterialisnormally fedover the'plate and sidewise of the said aperture fo'r'the needle.

1 'In testimony that I claim the foregoing as myin-vention I have signed my name.

ZACHARIA ROUTTENBERG; f

igs 3 and 1;

Images