US1296632A - Attachment for sewing-machines. - Google Patents

Description

H. DE v05. ATTACHMENT FOR SEWING MACHINES.

APPLICATION FILED APR. 24, I918.

Patented Mar. 11

1919. 2 SHEETS-SHEET 1.

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A TTOH/IIEY A. H. DE 'VOE.

ATTACHMENT FOR SEWING MACHINES.

APPLICATION FILED APR. 24, 1918.

1,296,632. Patented Mar. 11,1919.

2 SHEETS-SHEET 2.

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UNIT STATS PAT T ()FIC.

[ALBERT H. DE voE, 0F wEs'rEIELn'nEw JERSEY, ASSIGNOR TO THE srNGE MANU- FACTURING COMPANY, A CORPORATION on NEW JERsEE.

ATTACHMENT FOR SEWING-MACHINES.

Specification of Letters Patent. 7

Patented. Mar. 11, 1919.

Application filed April 24, 1918. A Serial No. 230,398.

To all'whom it may concern:

Be it known that I, ALBERT H. DE Von, a citizen of the United States, residing at Westfield, in the county of Unionand State of New Jersey, have invented certain new and useful Improvements in Attachments for Sewing-Machines, of which the follow-;'

ing is a specification, reference belng had therein to the accompanying drawings.

This invention relates to attachments for sewing machines and particularly to a combined hemming and. strip-folding device for making a shirt facing.

It aims to provide a new and improved construction aifording ready access to the hemmer for inserting the body-fabric of successively handled garments, for insuring asmooth folding of a strip immediately before it is stitched to a body-fabric, and a construction which is quickly and completely removable from a machine in order to permit the usual stitching operations thereon without leaving projections, which are unsightly and obstructive. v

The invention concisely stated comprises a base-plate to which a hemmer and strip,- folder are adjustably secured, the latter being movable from a position abovethe forthe opposite edge of'the strip in order that.

the strip may be folded smoothly at all times.

An embodiment of the invention is illustrated in the accompanying drawings, in which Figure 1 is a plan view of the attachment. Fig. 2 is a bottom plan view of the strip-folder complete. Fig. 3 is a perspective of one of the edge-guides. Fig.- Ais a side elevation of the attachment showing it in operative relation to the needle and resser-foot of a sewing machine. Fig. 5 is a perspective of the base-plate and stripfolder with an adjustable partof, the folder removed. Fig. .6 is a perspective of the adjustable part of thefolder'. Fig. 7 is a crossmer to a position at one side thereof. A'

section through the superposed hemmer and strip-folder with the needles appearing in theback ground and. Fig. 8 is a perspective of the work done with the attachment.

The attachment is shown mounted on a sewing machine having any suitable stitchforming mechanism in which a plurality of needles 1 are arranged in spaced pairs and operate through needle-holes 2 in a. presserfoot 3 above a throat-plate 1 provided with slots 5 in which move feed-dogs (not shown) as will be understood by those skilled in the art.

- The attachment consists of three main portions, a base-plate A, a hemmer B and a strip-folder C. i r

The base-plate A is provided with an elongated and countersunk slot 6 receiving a pair of screws 7 by which it is secured to the cloth-plate 8 of the machine and. maybe adjusted transversely to the direction of feed.

is a projecting arm 9 whose upper surface is inclined to the upper surface of the clothplate 8 toward the stitching point as clearly appears in the side elevation inFig. 4.

The hemmer B has a horizontally arranged body-portion 10 from which rises a scrollportion 11, see Fig. 4:. In the horizontal portion 10 of the hemmer elongated slots 12 are provided and by clamping screws 13 threaded in the arm 9 of the base-plate the hemmer is adjustably clamped in position with its edge-folding portion in advance of the left hand pair of needles, see Fig. 7

In a groove or'slideway 14. in the under side of the base-plate A is slidably mounted a bracket-arm 15 which has a bent portion 16 at one end extending upwardly through a rectangular opening 17 in the base-plate and carrying the strip-folder C which is soldered or otherwise suitably secured thereto in position above the hemmer'B andin advance of both pairsfof spaced needlesl. A stud-screw 18 is secured to the bracket-arm 15 with its shouldered portion (not shown) extending upwardly through a slot .19 notched as indicated at .20 to receive the pin end 21 of a knob22 which is carried at one free end of a bellcrank-lever 23 pivoted on i the stud-screw l8 and. having its opposite plate A parallel to the groove 14 receiving;

the bracket-arm 15. V

The strip-folder C as best shown in Figs. 2 and 5 comprises an outer casing 27 bent at its sides to forma wideunder wall 28 and relatively narrow under wall 29 whose adjacent free edges are spaced from each other, the rear end of the under wall 29 at its delivery end being cut away as indicated at 30. The casing portion 27 of the strip-folder is soldered or otherwise suitably secured to a plate 31 to. which in turn is soldered a wing 32 spaced as indicated at 33 slightly from the narrow under wall 29 to define a passage-way for one edge of the strip. An arbor-finger 34 is also permanently. secured to the plate 31 and extends within the casing 27. of the strip-folder in spaced relation therewith above the narrow under wall 29. Around the arbor-finger 34 one edge of the strip isfolded. The previously mentioned parts of the strip-folder,

27 to 34 inclusive, constitute what may be termed for convenience the primary part of the strip-folder. a

The secondary part of the strip-folder is shown best in Fig. 6 and comprises a plate 35 having a folding scroll 36 bent upwardly therefrom at one side and an arbor-finger 37 inclosed by the folding scroll 36but sup ported through a long lateral plate 38 from a block 39 at the other side of the plate 35. The secondary. part of the" strip-folder is adjustablewithin the primary part, a slot 40 being provided in the plate 35 to receive a stud 41 projecting upwardly from the plate 31 and a slot 42 in the stationary plate 31 receiving a screw 43 which is threaded into'the block 39 on themovable plate 35.

- In order to'bring the turned under edges of the strip into abutting relation adjacent one side of the folded product edge-guides 44 and 45 are adjustably secured by screwand-slot connections 46 and '47 respectively to opposite sides of the plate 31 of the primary .part of the stripfolder. The edgeguide 45 has a warped surface 48 at its rear end which is arranged to deflect any excess width of the folded strip into lapped relation with the narrow under folded portion of the strip and to thereby prevent crowding and, consequent wrinkling in the product.

.With the present invention an operator can readily shift the strip-folder from a position over the hemmer as shown in solid lines in Fig. 1 to a position at one side thereof as shown in dotted lines in the same figure, for convenience in introducing the body of facings and takes care of any excess width of material that may occurand would I attachmentfor sewing machines inordinarily clog in its passage through the strip-folder and produce wrinkles in the finishedproduct. v

' Having thus set forth the nature of the invention, what I claim herein is 1. An attachment for sewing machines including in combination, a hemmerand a superposed strip-folder, and means for supporting the strip-folder permitting it to be moved laterally from a position over the hemmer to a positionat one side thereof to facilitate. introduction of. work into the hemmer.

2. An attachment for sewing machines including'in combination, a hemmer anda superposed strip-folder, and means for supporting the strip-folder permittingit. to be moved laterally from a position over the hemmer'to a position at one side thereof to facilitate introduction if, Work intothe hemmer, said meansincluding a lockingdevice for holdingthe strip folder in or out of superposed relation with the hemmer. V

3. 'An attachment, for sewing machines including in combination, a hemmer and a superposed stripfolder, andmeans for supporting the strip-folder permitting it to be moved laterally from a position over the hemmer to a position at one side thereof to facilitate introduction of work into the hemmer, said means including a spring-pressed latch for holding thestrip-folder in or out of superposed relation with the'hemmer,

-4. An attachment for sewing machines having a needle including in combination a base-plate, a. hemmer secured to said baseplate, astrip-folder supported by said baseplate and movable laterally thereon from a normal working position above the hemmer to one side thereof for convenient access to the hemmer, said base-plate being adjustable transverse the line of seam-formation.

5. An attachment for sewing machines having a needle including in combination a base-plate, a hemmer adjustablv securedto said base-plate, a. strip-folder supported from beneath said base-plate and movable laterally thereon from a normal working position above the hemmer to a position at one side thereof, said base-plate being adjustably secured to the machine for rmovement transverse of the line of seam-formation. 7

6. An attachment for sewing-machines including in combination, a base-plate, a hemmer and a superposed strip-folder, a bracketarm extendingfrom said strip-folder downwardly, and laterally beneath the base-plate, a slide-way provided in the under side of said base-plate to receive thelaterally extending portion of said bracket armQand a springpressed latch carried by said laterally extending portion of the bracketarm for securing it in predetermined positions.

cluding in combination, a base-plate, a hem mer and a superposed strip-folder, a bracketarm extending from said strip-folder downwardly and laterally beneath the base-plate, a slide-way provided in the under side of said base-plate to receive the laterally extending portion'of said bracket-arm, alatch pivoted to said laterally extending portion of the bracket-arm, and a spring sunk within the base-plate and connected at its opposite ends to said base-plate and said latch where:

by'the strip-folder may be secured in one of a plurality of predetermined positions.

8. An attachment for sewing machines including in combination, a base-plate, a hemmer and a superposed strip-folder, abracketarm extending from said strip-folder downwardly and laterally beneath the base-plate, a slide-way provided in the under side of said base-plate to receive the laterally extending portion of said bracket-arm, slots provided in said base-plate one above and the other laterally of the bracket-arm, a pin carried by said bracket-arm and extending through one of said slots, a latch pivoted on said pin and having a portion of its body overlying the base-plate on the side thereof opposite to the slide-way, a spring within the other of said slots and secured to said latch whereby the strip-folder may be held in normal'working position overhanging the hemmer or in an abnormal position to one side of said hemmer.

9. In combination with a multiple needle sewing machine having needles arranged into spaced pairs, a hemmer arranged in front of one pair of the needles to deliver thefolded edge of a body-fabric thereto, a

strip-folder normally occupying a position above the hemmer and delivering theopposite sides of a folded strip to both pairs of needles, said folder being adjustable to accommodate strips of different widths and for bringing the side edges of the folded strip together adjacent one side of the strip, said means being adjustable.

12. In an attachment for sewing machines, in combination, a base-plate, a hemmer and an overlying strip-folder supported on said base-plate and each movalble relative thereto, edge-guides adjustably strip-folder for controlling the opposite edges of a folded strip.

13. In an attachment for sewing machines, in combination, a base-plate, a hemmer and a strip-folder supported onsaid base-plate, said strip-folder having pairs of arbor-finsecured to said 7 gers and surrounding scrolls for folding a strip into a band, one of which pairs is adjustable relative to the other. 7

14. In an attachment for sewing machines, in combination, a base-plate, a'hennner and an overlying strip-folder supported on said base-plate, said strip-folder having pairs of arbor-fingers and surrounding scrolls for folding a strip into a band one of which pairs is detachably and adjustably secured in osition relative to the other of said pairs.

11 testimony whereof I have signed my name to this specification.

ALBERT H. DE VOE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. V

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