US1151342A

US1151342A - Manufacture of inverted mantles.

Info

Publication number: US1151342A
Application number: US69142512A
Authority: US
Inventors: Samuel Cohn
Original assignee: Mantle Machinery & Patents Co
Current assignee: Mantle Machinery & Patents Co
Priority date: 1912-04-17
Filing date: 1912-04-17
Publication date: 1915-08-24
Anticipated expiration: 1932-08-24

Description

S E L T N A M D E N N H ON C IF S E R U T C A F U N A M Patented A11 24, 1915.

2 SHEETS-SHEET I.

11 um P A D E L F N 0 T A C L P P A ,H:HHHHHHHZ WITNESSES S. COHN.

MANUFACTURE OF INVERTED MANTLES.

APPLlCATlON .EILED APR. 17, 19l2. 1,151,342. Patented Aug. 24,1915.

2 SHEETS-SHEET 2.

WITNESSES SAMUEL COHN, OF NEW YORK, N.

Y., ASSIGNOR TO MANTLE MACHINERY & PATENTS COMPANY, OF NEW YORK, N. "SC, A CORPORATION OF NEW YORK.

IMANUFAGTURE OF INVERTED MANTLES.

Specification of Letters Patent.

Patented Aug. 24, 1915.

Application filed April 17, 1912. Serial No. 691,425.

To all whom it may concern Be it known that I, SAMUEL Conn, a res1- dent of New York city, in the county and State of New York, have invented a new and useful Improvement in the Manufacture of Inverted Mantles, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, froming part of thls specification, in which- Figures 1, 2, 3 and 4: are perspective views illustrating a series of steps taken upon a mantle blank. Fig. 5 shows the first step in my process. Fig. 6 shows the shape of the mantle while being sewed or darned. Figs. 7 and 8 are, respectively, a perspective view and an end elevation of the finished mantle. Fig. 9 is a sectional side elevation of the machine on the line IX-IX of. Fig. 10, showing the operating parts of the darning machine which I prefer to employ. Fig. 10 is a top plan view of the operating plate and ratchet disk. Figs. 11 and 12 are sectional detail views on the line XIXI of Fig. 10, showing different positions of the plate reciprocating mecha nism. Fig. 13 is a central vertical cross-section of theratchet disk. Fig. 14 is a top plan view ofv the mantle showing the stitch design and arrangement.

My invention relates to the manufacture of inverted mantles and is designed to avoid the difiiculties incident to the thick mass of longitudinally extending folds which are gathered toward the center at the closed end.

In accordance with my invention, the end i of the mantle is gathered, but the folds are not pulled together and compacted in longitudinal form. On the contrary a hole is left of considerable size at the center of the mantle, the gathered portions extending in wardly in a transverse direction toward this hole; and by means of impregnated thread, the hole is mechanically darned so as to close it with the same material as that of the mantle. In carrying out the invention, a circular row of stitches is preferably taken around the hole to fix the threads in position and the darning is then proceeded with to fill up the hole.

In the drawings, Fig. 1 represents the ordinary blank 2 cut from the hollow or knitted and impregnated web with the shirring string 3 therein. Fig. 2 shows the blank secured to the mantle ring 4 by the cord 5. Fig. 3 shows the mantle blank then turned right side out; 6 being the legs of the mantle ring. The portion carrying the draw string 3 is then pushed down through the hole in the ring 4 into the position shown in Fig. 4., The lower shirred and partly compacted end is then pulled together and tied around the tapered part of a pin 7, shown in Fig. 5. After tying the draw string or cord, the tied end is then forced down on to the cylindrical part 8 of the pin, tllls fixing the size of the hole at the shirred en The blank is now ready for the machine operation, and I will now describe a preferred form of machine shown in Figs. 9 to 13, inclusive, for darning and stitching the blank. The machine may take the form of an attachment to an ordinary sewing ma chine, 9 representing the bed plate of the sewing machine, having

side guides

10, 10 to receive a reciprocating plate 11, which has a circular opening receiving the ringshaped portion 12 of al'ratchet disk 13 provided with ratchet teeth 14 on its bottom surface. This ratchet disk also has a central hole, shown at 15, and is arranged to turn within the hole in the reciprocating plate 11.

The reciprocating plate, in the form shown, is provided with a rear guide 16, receiving a vertically movable'transverse catch plate 17, the projecting endsof which enter the wider recesses 18 in the side guides. When the catch plate is in lowered position, it allows the reciprocating plate to move *back and forth with a limited movement.

When it is raised, the plate, disk and guide may be drawn out endwise from the guides. The ratchet disk turns on the bed plate above the needle hole 19 therethrough, which needle hole is normally at one side of the opening through the disk. The mantle blank prepared as above described is forced within the circular flange of the ratchet disk with the hole in the mantle concentric with the hole in the disk. The legs of the refractory ring for the man tle are guided and supported by a ring 20 secured to the depending rame portion 21 of the machine; and instead of using a presser'foot with the needle 22, I preferably employ a spiral spring 23 surrounding the needle.

I provide mechanism for intermittently 31. *A pawl 32 pivoted to rock arm 33 secured to shaft is held in engagement with the ratchet wheel 80 by a spring 34 securedto bracket 27 The cam disk 31 acts upon a dependlng pin on a downwardly extending leaf spring 86 secured o feed plate 37 mounted on the feed arm. This spring 36 has'a pawl tooth 38' moving up through hole in the feed plate, and also in the bed plate-so as to cotiperate with a tooth 39. projecting downwardly from the reciprocating plate 11. A two-armed coiled spring is fas tened to one of the bed plate guides,-'as shown at 40 in Fig. 10, one arm of this spring engaging a pin Al on the guide, while the other arm'AE J engages the edge of the reciprocating plate and tends to force it constantly toward the right.

The operation of these parts is as follows: At each advance of the feed arm 24k the ratchet wheel 30 and the cam disk 31 move therewith and the pawl 32 moves to the right until it reaches and engages a succeeding tooth of the ratchet wheel. Upon the return of the feed arm and pawl 22, the latter will cause the ratchet wheel and cam disk to rotate one unit of'movement. This rotation occurs at each stitch period of the machine. Vfhile the cam disk progresses,

the pin 35 on spring '36 will ride on a raised portion of the cam disk during a complete stitch period, and then will ride on a depressed portion through a like period. When the pin rides on the raised part of the cam disk, the pawl 38 will be in the path ofpawl 39. Under these conditions, as the" feed arm moves to the left, the reciprocating. plate will be moved inthe same direction. At about this time, theineedle will descend and form a stitch as shown at 43 in Fig. 14.-. As the needle ascends the feed A and by the timethe needle is lifted the feed arm has reached its extreme position to the right. Before the needle has fully ascended, and at the time when the feed arm has been loweredby the eccentric for such disengagement, the reciprocating plate 11 will have been returned bythe spring arm 42. By this time-the feed arm will have reached its extreme right hand position, the pawl 22 will have engaged a successive tooth in the ratchet wheel and carried it one unit of I have shown the of thecam disk will cause the. pawl to clear the tooth 39, and hence the reciprocating. plate will not be moved during the next step. The needle will descend and form a cross stitch as at 4:4 by thetime the feed arm has reached its extreme left-hand position. As the needle ascends the feed arm will begin its movement to the right, bringing into operation the pawl 32, which will again move'one of theraised portions of the cam disk underneaththe depending pin 85.,

At this point the pawl 38 will-have'engaged tooth 39, and as the needle is now descending, the reciprocating plate will again be moved in the left-hand direction, and at this time the point 45 of the mantle willabe brought underneath the needle owing to the rotation of the mantleholding device. A continuation ofthese operations will form stitches in the design shown in Fig. 1411 The holein the mantle is thus darned and filled with cross stitchesor threads. After the darning process,the machine may bestopped and 'thebl'ank removed and the after treatments thereon are the same as these-gen erally used. i

The advant ages of my invention result from the darning ofthe hole left inthe end of the mantle, and "the doing-away with the longitudinal folds drawn together at the center of: inverted mantles. By the machine darning, a larger hole may be left than in hand darning, and the use ofthe spring for 1 the needle keeps pressing'down the plaits or folds of the mantle, so as te make the fabric'even and symmetrically disposed. It

is evident, that the larger the hole',fthe fi ner and thinner will be the pl'aitsaround' it at the dome end. Lighter thread may beused than in hand darning'as the fabric is held together the shining thread before the darning operation ca'iii ed out; The use of, this invention has shown that the material at the dome end of the mantle will be very evenly distributed and it will be almost as thin and even as the rest of the fabric;

Instead of closing the hole by darning it with a series of stitches, I may cover the hole with a patch, which is a patch of impregnated material which will be stitched in place by a circularrow of stitches.

Many other variations maybe made'in' the" form of the machine and the steps of the process, without departing from'my invention.

T claim 2+ 7 I 1. In the manufacture of inverted mantles, the steps which consist in permanently securing one end of a tubular mantle blank to a supporting ring, turning the blank inside out through the ring, contracting the other end of said blank by forming shirrs therein, and securing said shirrs, compacting the terminals of the shirrs by enlarging the opening through the reduced end of the blank to a predetermined size, and closing the said opening of predetermined size by a fabric material extending across the same.

2. In the manufacture of inverted mantles, the steps consisting in securing one end of a tubular mantle blank to a ring, turnlng the mantle inside out, contracting the opposite end by shirring, While leaving 15 a hole through said end, increasing the size of the hole, and at the same time compacting the shirrs and cross-darning the hole.

In testimony whereof, I have hereunto set Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. G.