US1193823A - Cutting attachment for sewing-machines - Google Patents

Description

A. S. ROBINSON.

CUTTING ATTACHMENT FOR SEWING MACHINES.

APPLICATION FILED JAN. 6, 1915.

1 1 9 3,82 3 Patented Aug. 8, 1916.

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A. S. ROBINSON.

CUTTING ATTACHMENT FOR SEWING MACHINES. 1

APPLICATION FILED JAN. 6. 1915.

1,193,823. Patented Aug. 8,1916.

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K I v AQUILA S. ROBINSON, 0F PHILADELPHIA, PENNSYLVANIA.

CUTTING ATTACHMENT FOR SEWING-MACHINES.

Application filed January 6, 1915.

To all whom it may concern:

Be it known that I, A UILA S. ROBINSON, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Cuttin Attachments for Sewing-Machines, of which the following is a specification.

My invention relates to improvements in cutting attachments for sewing machines such as are adapted to cut the goods after it leaves the needle, said cutting operatlon being under the control of the operator so that the goods may be cut in any lengths desired.

A further object is to provide improve ments of the character stated which are especially adapted for use in cutting shirt centers, button stays, drawer bands, and the like, and at a single operation severs the goods without interfering with the ordinary functions of the sewing machine.

lVith these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings: Figure 1 is a top plan view illustrating my improvements. Fig. 2 is an end view partly broken away. Fig. 3 is an enlarged view in side elevation of my improved cutting attachment. Fig. 4 is a view in section on the line 44 of Fig. 3 showing the blade in its lowered position. Fig. 5 is a View in transverse section on the line 55 of Fig. 3, and Fig. 6 is a view in section on the line 66 of Fig. 3.

1 represents a table mounted on uprights 2, and supporting the bed plate 3 of an ordinary sewing machine.

4 is the arm of the sewing machine having the ordinary head 5 at its free end in which the presser bar 6 and needle bar 7 are mounted.

8 is the presser foot at the lower end of the bar 6, and 9 is the needle at the lower end of the needle bar, movable through the presser foot to sew the goods in the ordinary way.

10 represents the goods which we will assume to be a strip of material for the manufacture of shirt centers, button stays, drawer bands, and the like which is fed to the needle and presser foot in a continuous strip,

Specification of Letters Patent.

Patented Aug. 8, 1916.

Serial No. 762. i

and by ordinary methods heretofore in vogue, this strip after it has been sewed, is cut into lengths which requires a separate and distinct operation from the sewing operation. lVith my improvements, the strip can be cut into lengths desired, as the goods is sewed, as will now be explained.

To the bed plate 3, the base 11 of my im proved cutting attachment is secured by countersunk screws 12, and on the base 11, a curved standard 13 is provided. The curved arm 14 is pivotally connected at one end to the lower portion of standard 13 by means of a screw 15, and at its free end at one side, is provided with a. guide plate 16. This guide plate'l6 is rigidly secured to the arm by welding, soldering or by any other improved method, and at its ends is made with outwardly projecting flanges 17 to receive and hold an integral extension 18 on the cutting blade 19. The cutting blade 19 is formed with a slot 20 and a set screw 21 is projected through the slot 20 and screwed into a threaded opening 22 in arm 14, so that by means of this screw, a cutting blade may be adjusted to suit conditions.

23 represents a stationary cutting blade rigidly secured to the base 11, and having its upper face inclined as shown at 24, registering with an inclined plane 25 on the base over which the goods are directed, so that the cutting attachment offers little or no obstruction to the feed of the goods, but permits the same to be continuously fed as sewed, and in position under the cutting blade 19, so that it can be severed whenever desired.

A coiled spring 26'is removably connected at one end to a hook 27 on the arm 14, and at its other end removably connected to a hook 28 on the free end of standard 13. This coiled spring .26 normally holds the arm 14 and cutting blade in an elevated position, and returns the same to such position after the cutting operation.

A lever 29 is pivotally connected to the free end of standard 14, at one side of the latter, by means of a screw 30, and this lever 29 is provided with a relatively short arm 31 extending at an angle thereto and carry ing a roller 32 at its free end. This roller 32 is located in a. recess 33 in the arm 31, and is supported on a journal pin 34. The roller 32 bears against the upper face of arm 14, so that when the lever 29 is moved downwardly, it will operate to force the arm 14 downwardly and compel the cutting blade 19 to sever the goods.

A treadle is provided under the table 1, and is connected by a rod or other suitable device 36 with the free end of lever 29, said rod extending upwardly through openings 87 and 38 in the table 1 and bed plate 3 respectively.

Assuming the sewing machine to be a power machine, it is only necessary for the operator to feed the goods and from time to time operate the cutter to sever the same into the lengths desired. By reason of the inclined plane 25, the goods will move readily over the stationary blade 24: and under the movable blade 19, so that when the operator depresses the treadle 35, the lever 29 with its arm 31, will force pivoted arm 14 downwardly and compel the blade 19 to sever the goods against the stationary cutting blade 24 and the cut length will fall over the edge of the table into any suitable receptacle (not shown) provided for the purpose. By reason of this construction, the goods can be cut in lengths as they are sewed, and hence one operation heretofore required after the sewing operation, is entirely done away with, and with my improvement attached to a sewing machine, a great saving of time and labor is had. Furthermore, the goods when fed in long strips pile up, and are more or less mussed or wrinkled when unwound or straightened out for cutting, and this is also entirely overcome by my improvements.

Various slight changes might be made in the general form and arrangement of parts described without departing from my invention, and hence I do not limit myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is: V

1. An attachment for sewing machines comprising a base adapted to be arranged directly behind the presser foot and having an upwardly and rearwardly inclined face terminating at the rear in a cutting edge, an arm pivotally mounted on said base, a blade on said arm adapted to cooperate with said cutting edge and means under the control of the operator for actuating said pivoted arm, substantially as described.

2. A cutting attachment for sewing machines comprising a base adapted to be secured to the machine directly behind the presser foot, said base being tapered upwardly and rearwardly terminating in a cutting edge at the back, an arm pivotally connected to said base, a blade on said arm adapted to codperate with said cutting edge, a lever pivotally mounted adjacent said arm, and adapted to depress the same, a pedal and an operative connection between said pedal and said lever, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

AQUILA S. ROBINSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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