US818173A - Antislipping removable sole for shoes. - Google Patents

Description

No. 818,173. PATENTED APR.1'7, 1906.

J. M. HOFFMAN. ANTISLIPPING RBMOVABLB SOLE POR SHOES.

APPLICATION FILED APRJB, 1905.

NVENTOI? ATTHNEY.

' applicable to JOSEPH M. HOFFMAN, OF

BROOKLYN, NEWr YORK, ASSIGNOR OF ONE HALF TO JOHN F. NELSON, OF BROOKLYN, NEW YORK.

ANTISLIPPING REMOVABLE SOLE FOR SHOES.

Specification of Letters Patent.

Patented April 17, 1906.

Application filed April 18,1905. Serial No. 256,282.'

T0 all whom it may concern.'

Be itknown that I, JOSEPH M. HOFFMAN, a citizen of the United States, residing in the city of Brooklyn, State of New York, have invented certain new and useful Improvements in Antislipping Removable Soles for Shoes, of which the following is a full, clear, andexact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates generally to removable soles for shoes for the purpose of preventing slipping and specifically to removable rubber sole-pieces with which is combined means to positively clamp the removable sole to the shoe during use. The improved device I have invented is especially prevent slipping by tenpin bowlers when delivering a ball on the polished wooden fioor.

My invention has for its object to provide a rubber sole with a frictional tread or under face extending under the ball of the foot only-that is to say, back to the shankwith a cap-like front to adapt it to be held in place over the toe and forward part of the sole and with mechanical means embedded in the rubber by molding or otherwise to enable the rear portion of my removable rubber sole to be positively held when in use by a clamping action against the sole of the shoe of the wearer.

To these ends my invention consists of the device which accomplishes these objects, hereinafter described, the novel features of which both elementally and in combination will be now fully described, and finally pointed out in the claims.

In the accompanying drawings, illustrating my new device, Figure 1 is a plan view of my removable sole, parts of the under surface being shown in dotted lines. Fig. 2 is a side elevation of the same in place on the shoe of the wearer, and Fig. 3 is a transverse vertical section on the line 3 3 of Fig. 1.

As before stated, my improved device is desi ned more particularly for use ofc tenpin bow ers, where slipping of the foot on the floor in delivering a ball is very common. To revent such slipping, it is now common wit bowlers to use ordinary rubber or tennis shoes, which are heavy, cumbersome, and expensive. For that and analogous uses to which it is applicable my device is light in weight, inexpensive, and is adapted to quick and convenient attachment to and detachment from the shoe of the wearer, but in such manner .that while in use the device will be fixedly but removably clamped to the shoe of the bowler or wearer.

The device is made, preferably, of rubber such as mens rubber overshoes are usually made of, but with a slightly-thicker sole or tread portion A for the purpose hereinafter mentioned. It is provided with a toe-cap or front sole-fiange B, and the tread portion extends rearward to a point about coincident with the shank of the slice, as seen in Fig. 1, in order that the clamping device may be more suitably adjusted and be more effectively operative. The tread portion A (see Fig. 2) is provided with a roughened under surface, preferably a corrugated surface, as indicated at d, of the kind common with some sorts of sporting or field shoes for the purpose of increasing frictionalhold on the floor when the device is in use by the wearer.

Near the rear end of this tread portion and transversely thereto is embedded in the rubber a metal keeper D, consisting of thin sheet metal stamped out to provide two channels@ and t, one for the bar or body F of the clip C to slide in and the other serving as a pocket for the locking-pawls E with their springs E. This keeper is rovided also with an extension or tongue to hold the rearward channeled body of the keeper more securely against movement in the rubber and also to give the requisite form to and serve as a stiffener for the tread portion or sole proper of the device.

In the roove s of the keeper D is inserted on each side a flat bar F, fitting reasonably snuor in said groove, but capable of being readily slid longitudinally therein, said bar carrying on its outer end a curved clip C and having on its rearward longitudinal edge a series of serrations C forming a pawl-rack. The partition-'wall n between the grooves or channels s and tin the keeper D has on each side of its central line an opening r, through which a projection D2, operating as a pawl,

rojects, and also another contiguous openmg 1", in which a pivot-pin or projection e projects, said projections D2 and e being on the upper and inner end of a pawl-bar D3,l

back of which or forming the inner end thereof and resting on one wall of the groove tls IOO a flat spring E, curved to force the pawl D2 into the rackon the edge of the clip-bar F. The pin vor projection e enters the opening fr inthe partitionwall between the grooves. The pawl-bar D3 is prevented from dropping out, being heldv in place by the pivot-pin e, and said bar has an operating end E, which projects beyond the face of the groove t, by which the bar can be pivotally moved to detach the pawl from operative register with the rack-bar. i

'l The provision of oppositely-disposed movable clips, each constructed with a rack edge and each coacting with a separately-movable spring-'ac tuated pawl, enables the rubber sole to be readily clamped to the edges of the shoe-sole and as readily detached therefrom; but it also provides a reasonable amount of adjustment for attaching the device to shoe soles of somewhat varying widths. Theparts are shown in clamped or lockedposition in Fig. 1.

To remove the device from the shoe, the projecting end of the pawl-bar is pushed to swing it pivotally on the pin e and depress the spring t. and `disengage the locking-pawl D2 from engagement with the clip-bar rack C, then push or swing the sole in the direction of the other clip, for it is obviously unnecessary' to unlock both. To attach the device to the sole of the shoe, the toe-piece is first slipped on the foot, the tread portion A adjusted centrally on the shoe-sole, with one clip in position embracing one side of the shoe-solev at the shank thereof, then pushing in the other clip-bar in its groove in the keeper as far as it will go, drawing the rubber sole toward the heel of the shoe, and the rack and pawl will automatically engage in locked position.

Havingv thus described my invention, I claim as new and desire to secure by Letters Patentl. A removable antislipping sole for shoes, consisting of the combination with a solepiece having a toe-cap and a -tread-surface adapted to coincide with the shoe-sole rearward to the shank thereof, of a longitudi nally-grooved metallic bar mounted iixedly on the sole-piece. contiguous to the rear end thereof and transversely thereto, a pair of oppositely-disposed clip-carryin r rack-bars adapted to slide independentily in said grooved bar,l with pawl mechanism operatiiw to respectively lock and release each of said clip-carrying bars in the said grooved bar.

2. In a device of the character recited, the combination of the following elements a solepiece having a toe-cap and a treadsurface adapted to coincide with a' shoe-sole rearward to the shank thereof, with means to removably clamp it vto the shoesole, consisting of a grooved metallic keeper-bar mounted iXedly on the sole-piece contiguous to the rear end thereoic and transversely thereto, a pair of oppositely-disposed and independently-movable clip-carrying bars provided with a serrated edge and adapted to slide in the groove of the keeper-bar, with means to respectively lock and release each clip-carrying bar therein, consisting of a pawl-carrying and spring-actuated bar also mountedin the grooved keeper-bar and projecting outwardly eyond the edge thereof.

3. In a device of the character recited, the combination with a sole-piece of thick rubber in the tread portion, having a toe-cap and a frictional tread-surface, of a metallic keeper embedded. in the rubber, said keeper having a forward-extending tongue and a body portion with two contiguous grooves therein separated from each by a slotted partition, a pair of clip-carrying bars havingaserrated edge and mounted slidingly. in one of said grooves, and a spring-actuated p`awl-carrying bar mounted slidingly in the other of said grooves, the pawl extending through the slot in the 'said partition and normally registering with the serrated edge of the clip-bar.

In testimony whereof -I have hereunto affixed my signature this 15th day of April, A.

JOSEPH M. HOFFMAN. l/Vitnesses: s

HENRY STRIEBLING, JOHN F. NELSON.

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