US886025A - Welting attachment for sewing-machines. - Google Patents

Description

PATENTED A PR.,28, 1908.

W. WILSON. WELTING ATTACHMENT FOR SEWINGMACHINES.

APPLICATION TILED MAR. 17. 1906. I

2 SHEETS-SHEET 1.

No. 886,025. QPATENTED APR.28.1-9-O8..

\ w. WILSON.

WELTING ATTACHMENT FOR SEWING MACHINES.

APPLICATION FILED MAB..17, 1906.

2 SHEETS-SHBET 2 @TATEE PATENT Ol -TOE WlLLlAl/l WILSON, OF BOSTO N, MASSACHUSETTS, J-iSSIGNOR TO CAMPBELL BOSWORTH MACHINERY COMPANY, OF PORTLAND, MAINE, A CORPORATION OF MAINE.

WELTING ATTACHZEENT FOR SEWING-MACHINES.

nonsense.

. Specification of Letters Patent.

Patented April 28, 1908. 1

Application filed March 17, 1906. -Serial No. 306,59.

To all whom it may concenn: 1

Be it known thatfl, WILLIAM WiLson, a citizen of the United-States, residing at Boston, in the county of Suffolk and State of Massachusetts, have 'invented certain new and useful Improvements in Welting Attachments for Sewing-Machines; and I do hereby declare the following to be a full, clear, and exact, description of the invention,

14 such as will enable others skilled in the art to which it appertains to make and use the same,

This invention relates to an improved welt in attachment for sewing machines.

The ob ect of the invention is to produce an improved device for guiding a strip of welting in a sewing machine in making what is commonly termed a raw edge seam, such as is used in the manufacture of satchels and other leather goods, andthe invention consists in the improved welting attachment hereinafter described, as defined in the claims. l 7, i In the drawings Figure l isa ide elevation of a welting attachment embodying the prese'nt invention, in connection with the adjacent portions of a sewing machine to which it is app-ied. Fig. 2 is a planview of the attachment. Fig. 3 is a front elevation of the attachment showing the awi and presser foot of the sewing machine. Fig. 4 is a detail sectipnal' View of the welt guide. Fig 5 is a detail front elevation showing the Welt guide and portions of the awl, presser foot and work tableof the sewing machine, and Fig. 6 is detail view of the stop collar and cooperating lu 7 The il net rated embodiment of the invention comprises a welt guide and an edge gage and adjustable means for supporting these instrumentalitiesin proper relation to each other and .to the instrumentalities of the .sewing machine.

prises a block 1 having a horizontal oblong opening 2 therein for the passage of the welt. A spring 3 of sheet metal, edjustably secured to the block 1 by a screw, has a portion located within the opening 2' and pressing against the welt 5,-as shown in Fig. 4, so as to insure the proper position of the welt. By means of the screw .4 the spring 3 may be ad; justed for welts of diflerent widths. The welt u ide is fixed to a flexible flat strip of meta hvhich is secured at its rear end to an arm '5. The arm 7 is bent at right angles and provided with slots engaged by,set screws 8,

. block 9 may .cated inFig. 5 by the reference character 25,

The welt guide com-f by means of which the arm 7 is secured to a block 9 slidin ly mounted on a bar 10. The

be secured in adjusted position on the'bar 1Q by a set screw 11. The bar 10 is'fixed to the up er extremity of a stem- 12 6Q which is mouhter ina vertical socket in a post 13 fixed'to theframe of the sewing ma-- chine. The uppenend of the post 13 is provided with ears in which is threadeda thumb screw 14, and the upper extreinity of, the 5 postis split so that when the thumb s'crew 1-4 is screwed up the stem 12 is tightlysecured in the socket. Upon loosenin the thumb screw the stem may be turned in the socket, and raised or lowered. The edge gage com- 7 prises a roll 15 journaled on the forward end of an arm 16, secured by set screws 17 to an arm 18. The set .screws 17 pass throu h slots in the arm 16, so that the latter, and t e roll 15, may be adjusted toward and from th jeneedle of the sewing machine. The edge gage is of sufficient height to engage the edges of both pieces of the leather between which the welt is being sewed. The arm 18 is integral with a clamp collar 19 which is clamped by a screw 20 to the stem '12. A stop collar 21 similarly. clam ed by a screw '22 to the stem 12 is provide with a downwardly-projecting stop 23 engaging a lug 2 g at the upper end of the post 13. 35

In the operation of this device the edges "oi the two thicknesses of material between which the Welt is to be sewed, which are indi-- are pressed against the roll 15, which determines the distance of the seam from these edges, and the wait guide occupies a position between the thicknesses of material so as to guide the welt to the pro er osition between the thicknesses. Theexi le connection 695 between the welt guide and its sup ort ermits thefwelt guide to rise and fal slig tly to yield to variations .i lthiOlCHQSSCS between the two layers of material, and by means of the set screw 8 this welt guide may be ad'usted in the direction of feed, as is desirable in 7 working on materials of difi'erent thicknesses, the work guide being moved further from the needle of the sewing machine as the thickness of the material is increased. In. this connection it is to be observed that the welt guide 1, is beveled off on top and bottom so as to ermit it to be located nearer to the resser oot without interference therewith; t is desirable in 'general, to have the Welt ideflocated as close to the sewing instrumentalities, as the thickness of the material will allow' and this adjustment enables the operator'to secure this result in all cases. By means or the various other adjustments the height of the work guide and the edge gage mayv be adjusted, or the edge gear may be ,moved toward or from the needle so as to vary the distance between the scam and the edges of the material. The stop c0llar21 is useful where it is desired to throw the welt attachment into and out of working position.

When the thumb screw 14 is loosened the welt guide and edge gage may be swung back out of working positlon, and when swung back again the stop 23 and lug 24 insure their return to their original position without attention upon the part of the operator. Since the stop collar also determines the height of the stem 12 in the post 13 the attachment, with the exception of the post, may be entirely removed from the machine and relaced again in precisely the same position Without readjustment.

It is to be noted that the edge ga'ge andwelt guide are mounted upon the same'suprt, and that the edge gage maybe adusted vertically if desired without changing the vertical adjustment of the welt guide. The welting attachment is shown in the drawings as ap lied to the well-knownflampbell wax threa sewing machine, which need' not be described here, and the awl 26, presser foot 27 and work table 28 as shown in the drawings are all of the usual form.

, The invention is not. limited to the details of construction and operation of the illus-' trated embodiment but maybe embodied in other forms broadly defined in the claims.

1. A welting attachment for sewing machines, having, in combination, an edge gage of sufiicient height to engage the edges of two pieces of leather with a piece of welting between, a welt guide havin its upper and lower sides beveled toward the edge gage so that it may be located close to the edge gage without interference with the presser oot, substantially as described.

2. A welting attachment for sewing machines, having, in combination, an edge gage of sufiicient height to engage the edges of .two

pieces of leather with a strip of welting'between, consisting of a roll mounted to rotate In testimony whereof I afiix my signature, in presence of two witnesses.

WILLIAM WILSON.

Witnesses: i HORACE VAN EvnnEN, Farm 0. Frsn.

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