US1393783A - Sewing-machine - Google Patents

Description

G. H. HURD.

" SEWING MACHINE.

APPLICATION FILED SEPT. 17, 1918.

1,393,783. Patented Oct, 18, 1921.

UNITED STATES PAIENT oFFicE.

GEORGE E. HURD, OF GEORGETOWN, MASSACHUSETTS, ASBIGNOB TO UNITED SHOE MACHINERY CORPORATION, OFfPATERSON, NEW JERSEY, A CORPORATION 01' NEW Patented Oct. 18, 1921.

mnsny. I

SEWING-MACHINE.

1,393,783. Specification of Letters Patent.

Application filed September 17, 1918. Serial No. 254,476.

To all whom it may concern:

Be it known that I, GEORGE H. Hum), a citizen of the United States, residing at Georgetown, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Sewing-Machines; and I do hereby declare the following to be a full, clear, and exact descnption of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to sewing machines for sewing outsoles to the uppers of shoes and moreiparticularly to a resser-foot for use on such machines.

The object of the invention is to provlde a resser-foot for shoe sewingmachines of the above class having a novel and improved construction for lifting and turning back the channel flap of an outsole and holding the same out of the path of the needle and awl.-

With the above object in view the invention consists in .the novel and improved constructions, arrangements and combinations of parts hereinafter described and particularly pointed out in the claims, the advantages of which will be readily appreciated by those skilled in the art.

The invention will be readily understood from the accompanying drawings illustrating the invention in its preferred form, and the following detailed description of the constructions therein shown.

In the drawings Figure 1 is a perspective View of a portion of a shoe sewing machine having the invention applied thereto; Fig. 2 is a v1 ew in front elevation of the presserfoot shown in Fig. 1 detached from the machine;.and Fig. 3 is a view of the presserfoot taken in the direction of the arrow, Fig. 2. I

The shoe sewing machine illustrated in the drawing is a machine of the so-called Me Kay type, an example of which is illustrated in the patent to McKay and Mathies, No. 36,163, dated August 12, 1862, and comprises a vertically reciprocating straight hook needle 2, and a rotatable horn 4 adapted to enter the shoe and support the sole of the shoe upon its upper end or tip, a workfeeding awl 6, and a Presser-foot 8. The

presser-foot is mounted upon a carrier 1 0 and, as is usualin this type of machine, 1s located substantially in the vertical plane of acute angle to the plane of the sole of a shoe placed on the horn. The presser-foot of the machine illustrated in the drawing is especially constructed for operating upon shoes the outsoles of which have the usual marginal flap or lip made by the dlagonal cut or channel extending from the marginal portion of the sole toward the central portion thereof. It is the usual practice 1n the manufacture of shoes to turn back the channel flap of the outsole and set the same in posltlon before the outsole is applied to t e shoe. When this practice is followed it is necessary after the outsole is stitched to the shoe bottom to turn the channel flap from the position in which it is set back agalnst the body of the outsole and cement the same in position, this latter operat1on being known as the channel laying operation. These operations require the expenditure of considerable labor and time and the exercise of some degree of skill, and t 1s obviously of considerable advantage to illustrate these operations or certain parts thereof. To this end the presser-foot of the present machine is provided with devices having a novel and improved construction and mode of operation, by which during the sewmg operation the channel flap is lifted from the body of the outsole and turned back to expose the line along which the seam is to be sewn, and is held in back-turned po-' sition out of the paths of the needle and awl. In sewing outsoles having channel flaps formed in the usual manner, as above described, upon machines of the McKay type, the lower end of the presser-foot engages the marginal portion of the sole outside of the channel flap close to the base of the flap, and through its contact with the base of the flap forms a guide for the shoe. In order to lift the channel flap of the outsole as the shoe is advanced across the tip of the born, the presser-foot of the machine illustrated in the drawing'is provided with a rigid platelike projection or plow 12 mounted on the resser-foot at the base thereof, and extending from the rear side of the resser-foot, or the side away from the operator, in a general direction reverse to the direction of feed of the machine. This projection is arranged so that its lower edge extends from the presser-foot close to the base of the channel flap,

plow.

and is tapered from its base toward its outer end so that it will engageflbeneath the partially down-turned ilap and lift the same away from the bodyani the outsoler As i 5 illustrated clearly in 3 of the drawings, the outer end portion 0 the plow 12 which first engages the flap is deflected or bent for wardly in a curve, the extent of the deflec tion thereof increasing froin the lowerto the in upper edge of the plow. The curvature of V the flap-engaging face of the plow thus conforms substantially withthe curvature of the portion of the flap engaged thereby as the tie is lifted and turned back by the Vith this construction, the outer end of the plow engages beneath the partially down-turned flap and lifts the same away from the-marginal portion of the outsole and the inner part of the plow ad acent the body of the presser-foot, and f turns the lip back substantially into an upright position. fOn account of the curvature of the lip-engaging face of the plow, the lip is lifted and turned back gradually and easily without exerting any appreciable frictional "resistance to the movement oi the shoe, and there is no tendency for the 'plow to catch in and tear or otherwise injure the stock.

in order to hold the channel flap of the so outsole'out of the paths of the needle and awl after the lip has advanced beyond the body of the pressure-foot, the prcsser-ioot is formed with asecond rigid plate-like projection or wing 14 mounted on the presserfoot adjacent its base and extending from the rear side of the presser-foot in an oblique direction upwardly and in the direction of feed beyond the awl and the path of the ramprocating needle. As clearly shown in Fig.

40 3, the projection 14 is curved to a sh ht degree, its outer end beingdirected slig tly to the-rear so as to hold the outer portion of the lip well out of the path-of the needle. It is found to be sufliciently effective to con- 4 struct the projection 14 so that it engages the outer or u per portion of the lip only inasmuch as the lower portion of the lip is held back by its engagement with the base of the presser-foot.

The projections .12 and 14 are preferably formed integral with the presser-foot as fillustrated in the drawings, although they q may be formed separately therefrom, and

, rigidly secured to the presser-foot in any suitable or convenient manner.

Having explained the nature and object or the invention, and havingspecifically described a preferred embodiment of. the; in; vention, what is claimed is; fink-sewingmachine for sewin to the up rs of shoes, having, inf-"combine fi l Stitc f rming devices includinga-hq k needle, awork support and a presser' footf,"f

comprising a rigid body extending obliquely downward and in the direction of feed and outsoles terminating at its'lower end in a work enga 'ing foot, a rigid plow mounted on the be y of the presser-foot at its base and directed in a directioh reverse to the direction of feed for lifting and turning back the channel flap, anda rigid plate like projection mounted on the bod Joli the presserfoot adjacent its base an extending from the body of the presser-ioot in the direction of feed for engaging the outer portion of the channel flap and holding the same out of the paths of the needle and awl.

2. A sewing machine for sewing outsolestending from the body of the ,presser-ioot obliquely upwardand in the direction of feed for engaging the outer portion of the channel flap and holding the same out of the paths of the needle and awl.

3. A. sewing machine for sewing outsoles til to the uppers of shoes, having, in combination, stitch forming devices including a straight hook needle, a work support and a presser-foot having a rigid plow mounted on and extending from the base of the body of the presser-foot in a direction reverse to the direction of feed for engaging beneath the partially down-turned channel flap, and having a flap-engaging face curved to conform to the curvature of the portion of the flap engaged thereby, and a rigid wing extending from the body of the presser-foot in the direction of feed for holding the channel flap out of the paths of the needle and awl.

4. A machine for sewing outsoles to'the uppers of shoes, having, in combination, stitch forming devices including a straight hook needle, a work support and a presser- .foot, comprising a rigid body extending obliquely. downward and in the directidn of feed and terminating at its lower end in a work engaging foot, a rigid plow mounted on the body of the resser-foot at its base and directed in a direction reverse to the direction of feed for lifting and turning back the channel flap, and a rigid plate- ;glike wing mounted on the body of the presser-foot adjacent its base, and having its outer portion deflected rcarwardly in a curve for engaging the outer portion of the 1 channel flap to hold the same out of the Tpaths of the needle and awl.

GEORGE H. HURD.

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