US1367269A - Sole-cutting machine - Google Patents

Description

H. KIME. SOLE CUTTING MACHINE. APPLICATION F ILED JULY 15 I919.

mammal). 1,1921.

4 ////l//////////IZZE Inuan tar UNITED STATES HOMER KIME, or WATERVILLE, MINNESOTA.

SOLE-CUTTING MACHINE.

specification of Letters Patent.

Patented FebQl, 1921.

Application filed July 15, 1919. Serial No. 310,958.

To all whom it may concern:

Be it known that I, HOMER linen, a citi-' zen of the United States, residing at Waterville, in the county of Le Sueur and State of Minnesota, have invented certain new and useful Improvements in Sole-Cutting Machines; and l do hereby declare the follow ing to be a full, clear, and exact description 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 cutting inachines, and more particularly to a machine specially adapted for cutting shoe soles and similar articles from sheet material.

One of the main objects of the invention is to provide a machine of the character stated of simple construction and operation which may be produced at small cost and is well. adapted for use in the ordinary shoe repair shop. A further object is to provide a machine including a reciprocating cutter by means of which a shoe sole or similar article, after being marked out on a sheetof leather, may be readily cut therefrom. Fur ther objects will appear from the detailed description.

In the drawings:

Figure l is a front View of a machine constructed in accordance with my invention partly broken away.

l ig. 2 is a side view partially in section.

Fig. 3 is a section taken substantially on line 83 of Fig. 1.

Fig. 1 is a detail of the feed plate.

Fig. 5 is a detail of the cutting member.

Fig. 6 is a perspective view of a cover plate through which the cutting knife and feed plate pass.

The machine resembles, generally, a shoe sewing machine of known construction and includes a standard a which may be pro vided with any suitable supporting base carrying a treadle and an operating wheel con nected thereto for driving a cord 6 passed about a grooved drive wheel. a secured upon a drive shaft cZ rotatably mounted through a horizontal arm a formed at the upper end of the standard a. This arm is provided at its forward end with the usual head fin which is mounted a needle bar 9 for vertical reciprocation, this bar being reciprocated by rotation of shaft (Z in the known manner. A presser bar 72 is also carried by the head f being normally held in lowered position by a leaf spring 2', this Presser bar being provided at its lower end with a presser foot 7' of known type.

The prcsser foot y' is provided with the usual longitudinally extending slot K which alines with a slot 1 extending transversely of a substantially rectangularcover plate 2 which is slidably mounted in top plate 3 of a horizontal work supporting arm 1 positioned below and parallel with the upper arm 6. A rocker arm 5 is pivotally and slidably mounted in the hollow work supporting arm as shown at 5 and has its opposite end portion provided with a depending arm 6 terminating in a ball received by a suitable socket provided at the forward end of a horizontally disposedoperating lever 7 so as to establish a ball and socket connection 8 between the plate and the lever.

v This lever lSIIlOHIltECl in arm a for rocking androtary movement by a screw 9 secured to the top plate 3, this screw being inserted through a slot 10in the plate and a pressure spring 11 being mounted about the screw and corn fined between plate 3 and the lever for bold ing the lever in proper operative position and preventing excessive looseness thereof.

The outer end of lever 7 is connected by a ball and socket connection 12 to the lower end of a vertically disposed lever 13 which is pivotally mountedintermediate its ends for rocking movement about a horizontal axis by means of a supporting screw 14 insorted through a longitudinally extending slot 15 in the lever, this screw being adapted to be screwed into any one of a plurality of screw threaded bores 16 provided in the standard a for varying the throw of the lower end of lever 13. At its upper end lever 13 is provided with an eccentric strap 17 which fits about an eccentric disk 18 secured upon shaft cl. W'Vhen the shaft cl is rotated in the manner described, horizontal and vertical movement will be imparted to the forward end of lever 7 thus causing the forward end to move in the path of an ellipse. This will cause the teeth 6 of the feed plate 6 to have movement vertically through and longitudinally of the slot 1 so as to intermittently feed the material positioned. between the presser foot y' and this plate across the work supporting arm el.

The needle bar 9 is provided, in the lower end portion thereof, with an axially extending bore which is shaped to receive the upper portion of a cutting member designed gen erally by 19. This cutting member is seimarked thereon.

sired to .cut out is first outlined upon the leather or other material, after which this sheet of material is placed between the presser foot and the cover plate 2 so as to be held securely for cutting and moved across the top plate 3 of the supporting arm 4 during operation of the-machine. When the bar 9 is reciprocated, the cutter 19 acts to cut or chisel out the article along the line marked on thefmaterial defining the same, the work being readily turned during its passage beneath the presser foot so as to cause the cutter to operate along the line To permit this ready turningof the work and insure a smooth out, the lower or cutting end 19 of the cutter 19 ismade relatively narrow, the work being5advan'ced a distance slightly less than :the Widthof this cutting ed e after each reciprocation of the bar 9. Ihis machine -may be operated in the same manner as the ordinary shoe sewing machine and enables the article to be readily and easily cut from sheet material and "in any desired size or shape. a a It will be evid-entthat there may be slight changes made in the construction and arrangement of the details of my invention without departing from the field and-scope ofthe'same, andl intend to include all such variations, as fall within the scope of the appended claim, in this application in which a preferred form only of my invention is disclosed.

hat I claim is:

In a sole cutting machine, the con'lbinaed to said rocker arm, said rocker arm including a depending portion and a ball carried thereby beneath the pivot connection of said rocker arm with said feed plate. an operating lever having a socket at one end receiving said ball to form a ball and socket connection between said rocker arm and said operating lever, a cam and pitman arm operating mechanism engaged with the opposite end of said operating lover, a pivot slide pin for said operating lever secured in the said top plate, and a pressure spring mounted on said pin for holding the operating lever in proper operative position and preventing excessive looseness thereof. and a pre sure foot and cutter carried by the upper horizontal arms for cooperation with said feed plate.

In testimony whereof l aitix my signature in presence of two witnesses.

HOMER KIME. Vitnesses W. M. ConY, CHAS. BACHMAN.

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