US 2537123 A
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Jan, 9, 1951 L. H. DowLlNG, sR 2,537,123
ANTIsLIP TREAD y Filedv March 51, 195o' Wbw z fw Attorneys' Patented Jan. 9, 1951 UNITED STATES PATENT OFFICE ANTISLIP TIpEAD p VLeslie-Horace,Dowling, Sr., Birmingham, England Application March 31, 1950.', Serial No. 153,108
,In Great Britain September 24, 1949 This invention relates to footwear for outdoor use and is especially, but not exclusively, applicable to boots to be worn when playing various kinds of football games; the wider applications of my invention comprehend boots and shoes for golf, hockey, walking, running, jumping, mountaineering and analogous sports and outdoor exercises particularly where slippery or ice-bound surfaces obtain.
The present invention is a development of that described in my concurrent application for Letters Patent Serial Number '744,235 filed on April 26, 1947 now Patent Number 2,532,485 according to which an anti-skid tread for footwear comprises an open link chain connected at intermediate positions of its length to thin studs adapted to be secured to the tread surface of footwear, the respective lengths of chain be-v tween adjoining studs constituting flexible sections carable when fitted to a tread surface of limited displacement and operating as abutments between ground and tread surfaces, said chain being connected to said studs by split pins, said split pins engaging the links and central holes in said studs, the heads of said split pins forming anchorages for said chain and the shanks of said pins being clinched against the upper side of said studs. With the parent invention the studs are nailed to the soles and heels of footwear and experience has shown that diiculty arises in maintaining the studs in the required positions during nailing in that when fixing has been accomplished it is found that one or more of the chain sections are tensioned more Athan others and as a result undue stress is imposed on the split pin anchorage and which during the wearing of the footwear exerts a pull on the studs tending to loosen the nails and render the antiskid footwear less eiiicient; moreover, such tensioned sections fail to provide the required iiexibility between adjoining studs.
The object of the present invention is to provide anti-skid treads and anti-skid footwear in which these disadvantages are absent.
According to the present invention in an antiskid tread as described in the specification referred to, the studs to which the chain is connected are moulded integral with an India-rubber tread forming yielding abutments for the chain so that during use the actual treads of footwear do not become scored by the chain pressure whereas footwear can be readily converted for normal use simply by removal of the nonslip tread.
According to an embodiment of the invention,
the integral studs of India-rubber sole and heel treads each have an axial hole for reception of a split pin engaged with a link of the chain, the Shanks of the pin being splayed or bent into recesses moulded in the inner surface of the tread, so that these shanks can lie flush with the said inner surfaces thus enabling the cementing of the latter flush with actual soles and heels of footwear. The hole in each stud is of sufcient size to prevent the head of the split pin breaking through whereas the tread of the footwear resists forces tending to straighten the Shanks.
A typical example of anti-skid treads and of such treads fitted to a football boot is illustrated by the accompanying drawing, wherein:
Fig. 1 is a perspective view of the underside of the football boot.
Fig. 2 shows an underside plan drawn to a larger scale of heel and sole treads seen in Fig. 1.
Fig. 3 is an enlarged cross section of Fig. 2 taken on the dotted line A-A.
In the drawing, the sole and heel parts I, 2, of the football boot have India-rubber treads 3 cemented thereto, the outer surface of the treads r3 having studs 4 moulded integral therewith. An
open link chain 5 is securely anchored to each stud 4 by means of simple cotter or split pins 6 threaded on individual links up to the heads 1 of the pins 6. The Shanks 8 are threaded through an axial hole 9 in each stud 4 and then splayed or bent outwardly and clinched into a diametrically arranged recess I0 moulded in the underside I I. With this arrangement, the bent shanks B lie flush with the underside II so that the latter can be cemented or nailed flush with the sole and heel parts I, 2, flexible lengths of chain are ensured between adjoining studs 4 without requiring skill on the part of the fitter of the sole and heel treads 3, and no skill is required on the part of the tter to ensure that the sections of chain between adjoining studs have the necessary exibility to admit of limited displacement during their pperation as abutments between the sole and heel parts and the ground.
The* holes 9 in the studs 4 receive the heads l of the pins 6 in tight fit vand the extensible walls of the holes hold the heads in position under resilient pressure prior to securing of the treads 3 to the sole and heel parts I, 2, but when secured the parts I, 2, resists forces tending to straighten the shanks 8.
Under the invention, the provision of readily attachable India-rubber tread sections with the chain sections already and correctly attached to the integral studs enables the attachment of the tread sections to footwear to be accomplished quickly and successfully without exercise of skill; the co-acting engagement between chain sections and tread sections provides a cushioning i 4 holes in the studs and the Shanks of said pins being bent into recesses on the inner surface of said tread so that said shanks lie flush with said inner surface.
2. Sports footwear having anti-skid tread comprising India-rubber sole and heel treads secured at their inner surface to the footwear and provided on their outer surface with integral studs, an open link chain connected at intermediate positions of its length to said studs, said connections consisting of split pins engaging chain links and central holes in the studs and the shanks of said pins being bent into recesses on the inner surface of said tread so that said Shanks lie flush its outer surface with integral studs, an open link 15 with said inner surface.
chain connected at intermediate positions of its length to said studs, said connections consisting of split pins engaging chain links and central LESLIE HORACE BOWLING, SEN.
No references cited.