US1613540A - Picot-cutting attachment - Google Patents

Description

Jan. 4, 1927. 3,54

' M. SIEGEL PICOT CUTTING ATTACHMENT,

' ed Jan. 1926 ATTORNEY Patented Jan. 4, 1927.

UNITE STATES MYER SIEGEL, F

new YORK, n. Y.

PICOT-CUTTING ATTACHMENT.

Application filed January 4, 1926. Serial No. 79,234.

This invention relates to improvements in picot cutting attachments for sewing machines and has for its primary object, the provision of a means for holding the same out of operating position when it is desired. to use the sewing machine for ordinary hemstitching.

Another object of the invention resides in a picot cutting attachment which includes the usual co-acting knife blades for cutting the fabric to be worked upon after the piercer and needle have passed therethrough, and which blades may be readily and quickly adjusted in a lateral direction for alignment with the piercer and needle, in the event that the blades should accidently become out of alignment.

A further object is to provide a simple and efficient means for holding the stationary blade of the picot cutter in an elevated posi tion so as not to interfere with the work passed beneath the presser foot when the sewing machine is used for ordinary stitching.

WVith these and other objects in view, the invention resides in certain novel construction and combination and arrangement of parts, the essential features of which are hereinafter fully described, are particularly pointed out in the appended claims, and are illustrated in the accompanying drawing, in which Figure 1 is a side elevation of my picot attachment in position on a presser foot of a sewing machine and showing the parts in an operative position.

Figure 2 is a similar view but showing the parts in an inoperative position.

Figure 3 is a horizontal sectional view on the line 33 of Figure 1.

Figure 4 is a horizontal sectional view on the line 4-4 of Figure 2.

Figure 5 is a perspective view of the attachment per se.

Referring more particularly to the drawing, the reference numeral designates the presser foot bar of a sewing machine, and to which a presser foot 11 is attached. The presser foot 11 comprises a bracket 12 which is yieldingly held down against a bracket 13 by means of a spring 14 which encircle the presser foot bar 10, and is interposed between the bracket 12 and a collar 15 which is fixedly secured to the bar. Presser feet 16 are pivotally connected to the lower ends of the brackets and the same are of the usual well-known construction. The construction thus far described is old in the art but has been shown to illustrate the application of my picot attachment thereto.

Also supported by the presser foot bar 10 is a bracket 17 which is held in position upon the bar by a set screw 18. The bracket 17 is slightly spaced fro-m the bracket 12 so that the same is capable of a limited turning movement with respect to said bracket. The bracket 17 is provided with spaced cars 19 between which a pair of blade members 20 and 21 are pivotally mounted as at 22. A rod 23 connects. with the end of the blade 21 so as to impart a rocking movement thereto when the machine is in operation, while the front ends of both blades extend into the space between the presser feet 16. The blade 20 has its rear end bent to provide a lip 24, and connected to the lip and to a set screw 25 extending from the collar 15, is a spring 253. This spring tends to normally hold the cutting end of the blade slightly below the presser feet for (Io-action with the blade member 21 when the same is rocked. The action of the blade members is similar to a pair of scissors, and automatically severe the fabric worked upon as it passes through the machine to provide a picot edge, after the fabric has been punched and stitched.

Should it be desired to use a sewing machine for an ordinary stitching, it becomes necessary to move the blade member 20 to an elevated position as shown in Figure 2 of the drawing. For moving and holding the blade 20 in a raised position, I provide a manipulating lever 26 pivoted to the bracket 17 as at 27. The lever is formed with a cam surface 28 which co-acts with the tail 29 of an arm 80, also pivoted to the brackets 17 as at 31. The arm 30 has an extension 32 which overlie-s the lip 24 and engages the same. It will be seen that when the parts are in the operative position as shown in Figure 1 of the drawing, and it is desired to render the picot cutter inoperative, the operator of the machine moves the lever 26 to the position shown in Figure 2 of the drawing, at which time the arm 30 is rocked upon its pivot, causing the extension 32 to press down upon the lip 24, thereby lifting the cutting end of the blade 20 against the action of the spring 25. The lever 26 acts as an eccentric and when in the position shown in Figure 2, the tail 29 of the arm rests upon a flat edge of the lever and locks the arm against the action of the spring. When the blade member is in this position, the blade member 21 is capable of a rocking movement,-but the-movement is such that it does not touch the Work pass ing beneath the presser feet. By pressing down upon the lever 26, when the parts are in the position shown in Figure 2, the lever Will release the arm. and allow the spring-25 to move the blade to a cutting position.

Should the cutting edges of the blade members 20 and 21 become out of alignment with the piercer or needle, the same may be laterally adjusted by loosening the setscrew 18 and turning the bracket 17 upon the presser foot bar to such an extent as is V necessary to correct the position of the cutlever, and a ting edges of the blades. 7

What is claimed as new is 1. In combination with the presser foot bar of a sewing machine, a presser foot supported therefrom having two spaced presser feet, a pair of cuttingblades pivotally supported from said presser foot bar and extending between said presser feet,

' means for normally holding the cutting edge of one of said blades disposed below the bottom surface of said presser feet, a rod connected to the other of said blades for imparting a rocking movement thereto, and means for holding said first mentioned blade above the bottom surface of said presser feet against the action of said first means, said last means including an angularly bent lip on the rear end of said blade, a manipulating pivoted arm engaging said lever and said lip,

2. In combination with the presser foot bar of a sewing machine, a presser foot supported therefrom having a pair of spaced signature.

presser "feet, a bracket supported by said presser foot bar, a pair of cutting blades plvotally mounted on sald bracket and extendmg :between said presser feet, means for normally holding the cutting edge of one of said blades-disposed below the under surface of said presser feet, a rod connected to the other of said blades and adapted to impart a rocking movement thereto, a lip mounted on the rear end of said first mentioned blade, an arm pivoted to said bracket and engag ing said lip, and'an eccentrically mounted lever pivoted to said bracket and co-acting feet, a bracket supported by said presser bar,

a pair of coasting blades pivoted to said bracket and having the cutting edges e5:- tendlng between said presser feet, one of said'blades normally extending between said presser feet and provided With a lip on the rear end thereof, means for adjustably supporting saidbracket on said prei'ser foot'bar for laterally adjusting the cutting edges of said blades Within the space between said presser feet, an arm pivoted to said bracket and engaging said lip, and an eccentric-ally mounted lever pivoted to said bracket and engageable with said arm, substantially as and for the purpose specified.

In testimony 'Whereof I have aflixed in MYER- SIEGEL.

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