US1954761A - Calk structure - Google Patents

Description

April 10, 1934. D, w, WIGGlN 1,954,761

CALK STRUCTURE Filedmw.l 22, 1932 Zigi] 5' 4o and fatented Apr. 10, 1934 1,954,151 can: srnvc'runn Daniel W. Wiggin, Yarmouth, Maine, assigner to The Abbott Company, Wilton, Maine, a corporation of Maine Application November z2, 1932, serial No. 643,853

My present invention relates to calkk sole structures for shoes and like footwear and to-a calk for such articles.

Calk soled shoes are used widely. For the impossible splitting of the tubular sole member below a desired point below 'the inside of the sole. As illustrative of my invention I have shown embodiments which indicate the principles invvolved and at the-same time provide simple, effective and inexpensive structures and operations.'

In the drawing and specification, like reference numerals are used to indicate corresponding parts.

In the drawing:

Fig. I is a partly sectional view of a shoe structure such as is involved. i Fig. II is a sectional-view of the calk in place. i

Fig. III is a sectional View of the tubular sole member. y

Fig. IV is a'lside view Aof the calk to be used l therein.

Figs. V and VI'are face views of the interengagingcollar members.

Figs. VII and VIH are views of similar'calk members having radially flanged engagements,

Fig. IX is a sectional view of a calk in place showing a modified sole member.

In providing such a calked sole this inventionA contemplates a two part calk member. One part '45 indicatedA as at 1 consists of a tubular sole piece.

This has a flange 2 at one end adapted to abut 4-the outer surface of a sole` S, but said flange may be otherwise formed or omitted. In Fig. IX, the

tubular sole .piece is formed as a blind eyelet, the

end thereof 2", when-set, lying within the surface of the leather. The tubular sole member thus formed. hasv some structural advantages. i

Internally as at 4.y the member '1 is threaded to receive the-calk shank. lAt the innerl end of the threaded area there is a cllcumferentially located and maybe given any shape'or form desired 'forded, but attened 'faces may be provided in shouldern to prevent the splitting of the tubular sole piece below this point during the lvclinchingl and allowing for a maximuminternally threaded :receiving aperture 4 for the calk. -A't its inner 5 most part these shoes'are worn in such sports as end 3, the tubular sole piece 'is of less thickness 60 than the threaded portion and may be tapered or llared as in Fig. III, so that the portion may be sprung or outwardly spread to clinch the member as is slfiown in Figs. I and II. The inner end of the tubular sole member may be scoredto facilitate clinching as at l`a in Fig. IX. 'Ihe calk member consists of a point 10 having a threaded shank 1,1 and a iiange 12. The anges 2 and 12 will be interlocked when the calk and sole members are screwed up as 'shown' in Fig. II. 70

.The interlock may be variously effected as by projections 13 and recess 5 .as in Figs. III to VI.

In Figs. V11 and VIII a modiiied formof calk is shown in which the ange 16 Aof the sole member 15 has serrations 17. These engage with similar serrations 18 on the iiange 19 of the calk member 20. The flanges as in the form previously described yield slightly on engagement permitting interlocking of the -serrations.

The tubular sole members l may be set in the soles S as by a standard eyeletting machine. The calks may then be screwed thereinl until the ilanges interengage. ISuch calks permit eflicient and practical production with a very much fm'- proved sole structure resulting. The sole member may be formed likea blind eyeletand so set. In such case the calk ange supports the sole adf. jacent the eyelet set.

The calk points may be removed or substituted adding to the utility of any shoe. The points may be pyramidal as indicated in Fig. IV or conical .as in Fig. VIII. The pyramidal form is convenient because a better grip for a.- wrenchis afany form.

Variousl modications in the construction and` operations of my device may obviously be resorted to without departing trom the spirit of my invention if within the limits of the appended claims;

What I therefore claim and desire to secure by Letters Patent iszy 1l In a shoe structure, a sole and' calk assembly including a tubular insert comprising a sleeve havingAv at its inner-end a reduced' portion lclinched tothe inner face ot the lsLole, a shoulder lfromwhich the reduced, portion extends, said sleeve being threaded 'internally toward the shoulder, a flanged outer end, and a detachable calk with a threaded' shank engasing'said'sole 110 ltllY sibly reinforcing the insert and adjacent sole structure and serving to hold the two members in set position.-

2. A calk sole shoe structure comprising a member inserted through the sole, an outwardly directed iiange on the outer end thereof in engagement with the outer face of the sole, internally threaded to receive a calk, a shoulder at the inner end of the threaded portion, the inner end of said member being outwardly tapered therefrom and deiectively clinched against the inner surface of the sole.

3. A calk assembly for shoe soles comprisingv a tubular member to be inserted through a sole, a stop formation on said member for engagement with the outer face o the soleto limit the insertion of the member, the member being of a length to extend at its inner end beyond the inner face of .the sole when the stop formation is engaged with the outer face of the sole, the main member and having an external flange comprese. In a shoe structure, a sole and a calk memv ber comprising a tubular insert having a ange at its outer end, said tubularinsert being ine teriorly threaded in its outer end,`the inner portion being of less thickness than the threaded end, a shoulder intermediate said threaded end and said inne;` portion, and said inner portion being clinched to\f -the inner sole surface beyond said shoulder, and a call: threaded therein.

W. VV'IGGIN.

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