US1211619A - Antiskid or antislip tread. - Google Patents

Description

A. l. OEHRING.

ANTISKID 0R ANTISLIP TREAD.

APPLICATION FILED IAN.24, 1916.

Lm Lm 9 Patented Jan. 9, 1917.

AUGUST J. OEHRING, OFiCHICAG-O, ILLINOIS, ASSIGNOR OF ONE-HALF TO ALBERT L.

TUCKER, OF CHICAGO,

ILLINOIS.

ANTISKID OR ANTISLIP TREAD.

Specification of Letters Patent.

Patented Jan. 9, 1917.

Application led January 24, 1916. Serial N o. 73,773.

To all whom t may concern:

Be it known that I, AUGUST J. OEHRING, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Antiskid or Anti slip Treads; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

his invention relates to an anti-skid tread and consists of the matters hereinafter described and more particularly pointed out in the appended claims.

The object of the invention is to provide an anti-skid or anti-slip tread, applicable, as will be apparent, to various uses, which will not only be efficient in operation to prevent slipping or skidding but which will be simple of construction and cheap to manufacture and to apply to the particular article with which it is to be used.

he more immediate object of the invention is to provide an anti-skid or anti-slip tread for shoes, (commonly known as rubbers and the like and the invention as-illustrated herein more particularly is applied for use in connection lwith the last named article. It will be apparent, however, that it may be applied for use in connection withv various other articles or devices where an anti-slip or anti-skid tread is required and it is therefore to be understood that the invention is in no way to be limited to its .particular application' as shown and described in the drawings and in the following description.

The various advantages of my improvement will appear more clearly and will be manifest to those familiar with the art as I proceed with my specication.

In the drawings, Figure 1 is a, perspective view of a golosh or what is usually called a rubber.) provided with. a tread made according to my invention, the upper and sole of the golosh being partly broken away to illustrate the construction of the tread. Fig. 2 represents a bottom plan of the same. Fig. 3 represents a transverse section through Fig. 2 as the parts of the same appear before the outer sole of the golosh has been vulcanized or otherwise attached to the upanti-slip or Fig. 4 is a transverse sectionas the same would appear after the golosh is iinished. Fig. 5 is a perspective view representing a Ifragment of a plate which forms a part of my improved tread in the lform of the invention illustrated herein.

Referring now to that embodiment of my invention illustrated in the drawings in which it is shown applied to a golosh 10 indicates the upper or main body of the rubber and 1l indicates the tread of the sole and heel, the latter being turned up at the back of the heel to provide a lug or'frear offset l2 for the engagement of the toe of one foot in the dislodgment of the golosh (or rubber from the other foot.

he sole consists of the usual inner sole 13 and of the heavier outer or sole proper 14, which are vulcanized or cemented together to form an integral sole body l5 as illustrated in Fig. 4. The upper 10 may be of any usual construction comprising the inner canvas lining 16 and the outer coating of rubber 17 which, in the process of vulcanizing or otherwise are suitably joined to the inner and outer soles.v The inner sole 13 also has a canvas layer 13a. The parts so far described (or rubber ordinarily sold and familiar to all.

In providing such an article with my improved anti-skid or anti-slip tread in the preferred` form of construction, a metal plate 28 is interposed between the inner sole 13 and the sole proper 14. This plate is cut points 19,

per.

to the trade plate and constitute friction They are preferably so formed that they have .converging webs 20, which meet, when/thus bent down, in a. vertical line, thus presenting an angular ridge in one direction and diverging in the opposite direction.

he converging webs or plates 20y are such depth or vertical length that they extend through the sole or tread of the shoe with their bottom or tread edges 20a 20a substantially in the plane of the surface of-said sole or tread when the latter is of its normal thickness and not compressed, as when bearing weight. When the tread or sole 14 which is made of yielding or compressible, elastic material (in this case rubber) is compressed under weight, as of the wearer inwalking,

are those usually in the golosh i condition, any snow or ice ,pery ice or snow the bottom edges 20EL of the webs 20 comprising the friction studs 19 project beyond the tread surface. Any number of the said friction studs 19 may be provided in the sole of the golosh (rubber) and also in the heel of the same and these friction studs are pref erably arranged symmetrically both in the sole and in the heel as shown in Fig. 2, wherein there are illustrated three rows 19a, 19b and 19, both in the sole and in the heel.

, The friction studs are preferably arranged with their converging webs 2020 disposed so that those in the sole of the rubber converge forwardly while those in the heel converge rearwardly,l thus opposing the best resistance against slipping in either direction.

The plate carrying the friction studs may be secured in place in any convenient or well known manner and in the case of a golosh it is preferably secured in place when the outer sole 11 is vulcanized, or cemented to the inner sole 13 and to the bottom edges of the upper 10. In this process the webs S20 forming the converging friction studs 19 may become vulcanized to the rubber material of the outer sole. But when the golosh is used, the point-forming webs will break through the vulcanized joint connecting them to the rubber sole through which they project and will act as now described.

In the use of the article (in this case the golosh) on a slippery surface such as ice, snow, or the like, when the tread surface is brought` into engagement with the said surface, the weight applied to the tread will act to compress the elastic yielding or compressible material (rubber) of the tread 11, that is of the sole or heel, leaving the rigid, converging webs 20 forming the friction studs, to project slightly beyond or below the said tread surface. These rigid projections, or friction studs,

surface and will act to prevent slipping of the sole or tread of the golosh on said surface.

When, the foot is raised in walking the yielding or compressible elastic pad forming the body of the tread will resume its normal non-compressed or non-deformed condition, thus bringing its surface again into the plane of the bottom edges E20a of the friction studs `19, so that said points together again 'present a surfaceflush with the bottomI surface of the tread. In the movement of the compressible, elastic tread material relative to the said friction studs in thus returning to its normal non-compressed, non-deformed or other particles that have collected on said friction studs will be stripped therefrom. The points 19 are thus cleaned so that no matter what the consistency `0r character of the material forming the slippery surface with which the tread is brought into contact and no will engage the slip.

and will be kept in suitable condition for each engagement with the said slippery surface.

Vhile I have shown my improved tread as applied to a golosh (rubber) and that is the primary intendment of the invention, it will be manifest that it may be variously applied to advantage.

An integral plate from which the points are stamped asin the case of the embodiment of the invention shown in the drawings, provides the simplest means for properly uniting or connecting the friction studs in suitable relation with the tread body, that is to say, the yielding or compressible, elastic pad with which the non-yielding friction studs are adapted to coact lto provide the tread surface. But it will be'manifest that this is but one way of thus connecting and associating the friction studs with the said pad and also of connecting thesaid friction f studs in suitable or primarily determined relation with each other. The principle of the invention depends upon a friction stud or engaging member made of non-yielding material which is adapted to project through but is normally protected by a yielding or compressible, elastic pad that forms the body of the tread,-the friction stud ends terminating substantially in the tread surface of the tread pad.

The plate from which the friction studs are stamped, in the embodiment of the invention illustrated herein, not only provides a convenient means for holding the friction studs in their predetermined desired relation, and also a means for securing them in the sole of the golosh, but it also provides an efficient backing member against which the yielding or compressible, elastic pad forming the body of the tread (the sole and the heel) may be compressed, while at the same time holding the non-yielding friction studs rigidly down in their work.

While in describing my invention I have referred to certain details o f mechanical construction and arrangement of the parts it will be understood that the invention is in material of the pad, and means providing a backing against which said pad may be compressed relative to said Webs, to expose the converging bottom edges of said Webs.

2. An anti-skid or anti-slip tread, comprising a pad made of elastic material, a plurality of spaced, non-yielding studs fixed in said pad, said studs each consisting of two vertical sheet metal Webs which converge in one direction only, the bottom edges of said Webs terminating in the plane of the tread surface of the pad, the 'Webs forming said studs being surrounded on all sides by the material of the pad, and a plate in said pad to which said stud Webs are fixed.

3. An anti-skid or anti-slip tread, comprising a pad ofelastic material, a sheet metal plate in said pad, and a plurality of spaced, non-yielding studs fixed insaid pad,

said studs each vconsis'zting of two vertical sheet metal Webs punched from said plate and depending therefrom, said Webs converging in one direction only to form a V, the converging bottom edges of said Webs terminating in the plane of the tread surface of the pad, and the Webs forming said studs being surrounded on all sides by the material of the pad.

In'testimony that'I claim the foregoing as my invention I aHiX my signature in the presence of two Witnesses, this 21st day of January A. D. 1916.

AUGUST J. OEHRING.

Witnesses:

T. H. ALFREDS, KARL W. DoLL.

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