US2043943A - Binding attachment for sewing machines - Google Patents

Description

June 9,1936 ,-E ACKERMAN 2,043,943

BINDING ATTACHMENT FOR SEWING MACHINES Filed March 2, 1935 Patented June 9, 1936 FF Q This invention :relates to improvements binding attachments forsewing machines and has for an object toprovide simplev guiding means adaptedto direct a body material margin and a binding, having an ornamental edging, in coordinated relationship tothe stitch-forming. mechae nism of asewing machine.

With the above and other objects in view, as will hereinafter appear, the. invention comprises the devices, combinations and arrangements of parts hereinafter setforth and illustratedin. the accompanying drawing. of apreferred embodiment of the invention, from which the several features of the invention and the advantages attained thereby will ,be readily understood by those skilled in theart.

Fig. 1 is a top plan view of a binding attachment: embodying, the invention and applied to a'isewin'g machine, the work being shown in its passage 2,0 through the'attachment and'machine. Fig-.2is a. front elevation of the attachment. fiFig. 3 "is a left side elevation, partly in section,.of the.machine and the attachment illustrated in Fig. l, with the bodyxmaterial. omitted. Fig. 4 repre- 25 sents a transverse section of the binder and of the work, taken substantially on the line 4'-4, Fig. 1. Fig. 5 represents a transverse section of the binder and the work, taken substantially on the line 5--5, Fig. 1.

30 Referring to the drawing, a sewing machine to which the present improvement has been applied,

has a work-supporting bed I upon which is suitably secured a throat-plate 2 having a feed-slot 3.

Operating through the feed-slot 3 of the throatplate is a lower feed-dog 4 having a needle-aperture 5 entered by a vertically reciprocatory and laterally vibratory needle 6, the needle being vibrated laterally in the line of feed of the work.

Opposed to the feed-dog 4 is an upper feeding foot I and a lifting p-resser-foot 8 which alternately engage the work, the presser-foot being raised during the feed of the work and being lowered to detain the work during the return movements of the feeding elements comprising the needle 6, feeding 45 foot 1 and feed-dog 4. Any suitable mechanism may be employed as complemental to the needle in the formation of stitches.

Mounted upon the bed-plate I of the machine is an attachment-holder 9 upon which the baseplate IU of the present binder is secured by screws H for adjustment of the binder crosswise of the line of seam-formation. Secured upon the baseplate H], by screws I2, is a work-supporting apron I3, said apron being recessed in its under face 55 from one edge thereof to provide a binding-margin guideway 14 andan edge-guide I5. for' said binding margin. The portion of the apron l3 overhanging the guideway I4 is provided with an upstanding flange N5 of which one side face-I1 serves asv an edge-guide fora body-material M, 5 said edge-guide I! being inclined-rearwardly to-' ward the line of seam-formation. The flange I6 is rearwardly tapered, preferably both widthwise and edgewise, the free upper edge l8-of said flange being rearwardly inclined downwardly'toward the 10;

planeof the apron l-3 from a point adjacent to the front end of'the flange. ,Thebase-plate ID is provided upon its upper" face with a guide-rib l9 extending lengthwise in a direction transverse to the line of seam-forma- 10 tion. Slida-bly mounted upon the guide-rib i9 is the shank 20, of a: binder backing-member 2|, said-shank ZDhaving side-flanges, as 22 confining :the. shank to endwise movements upon the guide-rib, The shank has a longitudinal slot '20 23 receiving the securing screw 24 and a stopblock 2 5, the latter being adjustably secured by a screw 26 upon the guide-rib l9 tozpredeterm'me. the operative position of the backing-member 2|.

The shank 20 is provided at its opposite ends with upstanding ears 21 and 23, the backing-member 2| being soldered or otherwise suitably secured to the ear 28.

The backing-member 2! has a vertically concave binding-guiding face 29 opposed to and 30 spaced from the side face 30 of the apron-flange l6 opposite to the edge-guiding face I! of said flange, said guide-wall 29 being preferably lengthwise inclined rearwardly toward the flangeface 30. The lower edge of the backing-memher guide-wall 29 rests upon the upper face of the base-plate It].

The binding illustrated in the drawing is prepared from a strip of woven material having marginal bands A and B connected by crinkly cords C. In a separate operation, this binding strip is doubled longitudinally, and the bands A and B thus superimposed are secured together by a line of stitching S adjacent to the cords C, which latter then comprise fringe loops. Ornamental bindings of this character are commonly employed to finish the edges of cushions and, while the structure of one type of binding has been herein described, it is to be understood that the present invention is not limited to any spe- 5O cific binding, as it is obvious that the described attachment is adapted to handle various types of bindings, and particularly bindings having fringes, cords, or the like at the fold margin.

In operation, the body-material M is placed upon the apron It, with an edge of said bodymaterial in engagement with the edge-guiding face ll of the flange IS. The lower band A of the binding is inserted in the guiding recess H with an edge of said band A in engagement with the edge-guide 15. The other band B of the binding is placed flatwise against the vertical side face 30 of the flange l6 at the front portion of the latter and is gradually bent over the downwardly inclined upper edge l8 of said flange, whereby the two bands A and B of the binding are caused to embrace the margin of the bodymaterial M and are presented in this fashion under the presser-foot and feeding foot of the machine. The ornamental fringe of the binding is embraced by the backing member 2| which is lengthwise substantially parallel to the binding edge-guide IS. The backing-member provides a guiding passageway for the binding fringe and at the same time serves to hold the binding margins Aand B. in engagement with the edgeguide [5 and the flange-face 30. The backingmember may be retracted from operative position for insertion and removal of work, the stop-block 25 providing for conveniently returning the backing member into a predetermined operative position.

Having thus set forth the nature of the invention, what I claim herein is:

1. A binding attachment for sewing machines comprising, a body-material supporting apron, a body-material-edge guiding wall provided upon and disposed substantially normal to said apron, said wall having a free upper edge inclined downwardly toward the plane of said apron in a direction toward the delivery end of said attachment, guiding means underlying said apron for a binding-margin, and a backing-member having a concave binding-guiding face opposed to and spaced from said wall at the side thereof opposite to said apron, said backing-member face being lengthwise inclined toward the delivery end of said wall.

2. A binding attachment for sewing machines comprising, a body-material supporting apron, a body-material-edge guiding wall provided upon and disposed substantially normal to said apron, said wall having a free upper edge inclined downwardly toward the plane of said apron in a direction toward the delivery end of said attachment. guiding means underlying said apron for a binding-margin, a binding backing-member disposed in spaced relation to and at the side of said wall opposite to said apron, and supporting means providing for adjustment of said backing-member transversely of said wall.

3. A binding attachment for sewing machines comprising, a base-plate, a work-supporting apron having an upstanding flange providing an edgeguide for a body-material supported by said apron, the flanged portion of said apron being disposed in spaced relation above said base-plate to provide therebetween a binding-margin guiding recess underlying the body-material margin, said flange having a free upper edge rearwardly inclined downwardly toward the plane of said apron, a binding-confining backing-member spaced from said flange at the side thereof opposite to said apron, and means for securing said backing member upon said base-plate for adjustment of the backing member transversely of and relatively to said flange.

' 4. A binding attachment for sewing machines comprising, a base-plate, a work-supporting apron having an upstanding flange providing an edge-guide for a body-material supported by said apron, the flanged portion of said apron being disposed in spaced relation above said base-plate to provide therebetween a binding-margin guiding recess underlying the body-material margin, said flange having a free upper edge rearwardly inclined downwardly toward the plane of said apron, and a backing-member disposed in engagement with said base-plate having a concave binding-guiding face spaced from said flange at the side thereof opposite to said apron.

JAMES E. ACKERMAN.

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