US762100A - Cord-guide for overseaming-machines. - Google Patents

Description

No. 762,100. PATENTED JUNEV, 1904.

v A. SPIELMANN. CORD GUIDE FOR O'VBRSEAMING MACHINES.

APPLICATION FILED APR. 23, 1903.

N0 MODEL.

wlrmsssss O INVENTOR I gdal mwruw M61 T I Y L ATTO R was Patented June '7, 1904.

UNITED STATES PATENT OFFIcE.

ADOLPH SPIELMANN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO WILLOOXv AND GIBBS SEWING MACHINE COMPANY, OF 'NElV YORK, N. Y., A CORPORATION OF NEW YORK.

CORD-GUIDE FOR OVERSEAlVIING-MACHINES.

' SPECIFICATION forming part of Letters Patent No. 762,100, dated June '7, 1904.

Application filed April 23, 1903' T ail whmn it may concern:

Be it knownthat I, ADOLPH SPIELMANN, a citizen of the United States of America, and a resident of Philadelphia, in the county of Philadelphia, in the State of Pennsylvania, have invented an Improved Cord-Guide for Overseaming-Machines, of which the follow ing is a specification. I

My invention is more particularly designed I 0 as an improvement in the construction of cordguides for overseaming-machines for which S. Borton obtained Patent No. 561,043, dated May 26, 1896. In that machine a trimming mechanism is combined with an overseamstitch-forming mechanism, which latter comprises a reciprocating needle and a hooked looping device which moves in a plane diagonal to the line of movement of the, needle above andbelow the cloth-plate. With these devices are combined guides for carrying filling and binding cords to the stitch-forming point, to be laid, preferably, both above and below the edge of the lace curtain or other material to be trimmed and overseamed. While my present invention is applicable to other styles of sewing-machines, it is particularly applicable to whatis known as the Willcox and Gibbs overseaming-machine, which is partially illustrated in the above-mentioned 3 patent and is more fully illustrated in Patents Nos. 472,094 and 472,095, dated April 5, 1892.

In the use of that machine with cord-guides,

as illustrated in Patent No. 561,043, the lower cord is carried to a point below thepresserfoot in a path close to the path of movement of the looper. In practice it has been found that when the cord being fed gets slack it is liable to drop a loop in the path of the rapidly-moving looper, which is then liable to 4 catch the cord and spoil the edging and either break the cord or be damaged itself; To prevent this trouble, I have devised an improved construction of lower cord-guide, which I will now describe.

In the accompanying drawings, Figure 1 is a sectional view, on an enlarged scale, through a part of the Willcox and Gibbs overlook-machine, showing the application of my improved Serial N0. 154,009. (No model.)

cord-guide. Fig. 2 is a perspective view of my improved cord-guide detached. Fig. 3 is another perspective View of a part; and Fig. 4 is a side elevation, partly in section.

Referring to Fig. 1, A represents the surface of the table or cloth-plate, it is the looper, and 10 is the needle, while P represents the presser-foot, having a downwardly-projecting finger g, around which the lower cord X is passed to the under side of the edge of the goods. Below the presser-foot is a feed-dog m, and at the left side. of the presser-foot above is the trimmer device, of which 42 represents the upper blade held in the outer end of the vibrating arm 41 alongside the shoe 44. This upper reciprocating blade 42 works in conjunction with the lower fixed blade 90. X is the upper cord, led down from above through a guide (Z on the trimmer-arm 41 to the presser-foot P. As will be seen on reference to Fig. 3 of Patent No. 561.043, there is quite a stretch of lower cord X between the guide-eyef and the pendent finger g of the presser foot, around which said cord passes to the goods. This cord is closely adjacent to the path of the looper 7L, and if the cord gets slack, as it sometimes will, it is liable to get into the way of and be caught by the looper. When the machine is in operation, the looper travels in'a path extending above and below the cloth-plate at a very high rate of speed, and if it catches in the loop of the cord either the latter will break or the looper itself will be damaged. In any case an imperfect edging is produced. I have there' fore devised a new construction of lower cordguide to prevent the cord getting into thepath of the looper.

My invention consists, essentially, of a cordguiding tube T, which extends along the surface of the cloth-plate from the point where the path of the cord begins to be adjacent to the path'of the looper and up to or adjacent to the edge of the presser-foot. This tube T is closed on the side adjacent to the looper to protect the cord from possibly getting into the path of the looper; but as the space between the looper-path and the shoe 44 for the upper trimmer-blade 42 is somewhat limited I have thinned down this tube by cutting it away at t, as shown in Fig. 3, leaving the passage 00 for the cord open on that side; but as this face of the guide will lie up close against the shoe 4A the latter will keep the cord in place. This tube T is mounted upon the bed-plate. It may be by the same screw 8 which was used to secure the cord-guide f in place. I prefer to make this cord-guide tube T yielding in the direction of its length, so that while at its outer end it may bear up against the presser-foot and the shoe 44 of the upper trimmer-arm-41 lateral adjustment of either the presser-foot or the trimmer-arm, or b0th, (to the left in Fig. 1,) as provided for in Patents Nos. M209 and 472,095, may

be'accomplished. For this purpose the tube T may, as shown in Figs. 2, 3, and 4, be carried by a slide-bar T, guided in a horizontal groove 1" in the plate R, which is to be secured by the screw 8, as above described. The slide T has a laterally-projecting arm t, which carries the tube T, and this arm t has plenty of play in the space 1*, cut in the blade R. A'suitable pressure-spring bears against the back of the arm t, as shown in Fig. 4;. 1n the drawings I have shown the spring n as inclosed within a horizontal tubular opening in the plate R and pressing against a round rod 17., which itself bears against the arm t, carrying the guide-tube T, while a plug n closes the back of the hole.

I claim as my invention 1. The combination of the cloth-plate, needle, presser-foot trimmer and trimmer-shoe of an overseaming sewing-machine with a looper having a path of movement above and below the cloth-plate, and a lower cord-guide consisting of a tube adjacent to the path of the looper and extending between the latter and the trimmer-shoe to the presser-foot, as

and for the purpose described.

2. The combination of the needle, looper and presser-foot of an overseaming-machine with a cord-guide extending alongside the path of the looper to the presser-foot, said guide being yielding in the direction of its length, substantially as described.

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

ADOLPH SPIELMANN.

Witnesses:

CHARLES H. HOWSON, Jos. H. KLEIN.

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