Jan. 7, 1947. E. R. DAVIS 2,413,750 PAD COVER _ Fileid May V23, 1944 /72 van tor 2,413,750 v Patented Jan. 7, 1947 NITED STATE: PATENT OFFICE 2,413,750 PAD COVER Emery R. Davis, Beverly, Mass., assignor to United Shoe Machinery Corporation, Flemington, NPJL, a corporation of New Jersey Application May 23, 1944, Serial No. 536,869 ' " 4 Claims. (on. 12-38) ' . 1 2 . lower layer which may be of any kind of mate This invention relates to machines for pressing soles on shoe bottoms and particularly to pad covers for the pads of such machines. rial, for example leather, having the property of promptly recovering substantially its original shape after distortion or, if desired, the kinds of leather usually employed for pad covers such as horsehide and pigskin may be used. The up per surface of the leather I0 is covered with a thin layer l2 made from a smooth sheet of one of the synthetic resins above mentioned such as Koroseal or Vinylite. As above suggested, the leather layer, since it is not subject to abrasion, need not be of the relatively expensive horsehide or pigskin frequently used as pad covers but may be of the cheaper grades of leather or other ma _ Machines for ‘this work, particularly cement sole attaching machines, have yielding pads which it is desirable to protect from wear by providing covers therefor. The cover should be resilient so that it will immediately recover its original shape when pressure of the shoe is re lieved so as not to interfere with the action» of gages movable over the surface of the cover to engage the edge face of the sole. The cover is to protect the pad from wear and hence should be as durable as possible. To preserve the char acter of the shoe bottom, the cover should have a very smooth sole-engaging surface. The cover ’ terial provided they have suiiicient resiliency promptly to recover their shape after distortion. The layers I0 and I2 are preferably cemented should be-waterproof since soles when attached together throughout their opposed surfaces, any are usually in temper. The cover should also be suitable cement, such as that disclosed in United unaffected by the cements used in sole attaching or the solvent employed for activating the ce 20 States Letters Patent No. 2.323.562, granted July 61943, in the name of F. V. Nugent, being em merits. \ , ployed. Objects of this invention are to provide a pad , The cover may be used, for example, on a pad such as that disclosed in Letters Patent of the cover which will ful?ll the above and other re quirements to an extraordinary degree. Various synthetic resins such as the vinyl res 25 United States No. 2,205,400, granted June 25, 1940, upon an application of Sidney J. Finn, and ins now available on the market are highly re for'that reason is shown as provided with a lo sistant to abrasion, are waterproof and are unaf fected by cement or cement solvents. Such res eating stud it which may be a cylindrical shell filled with rubber, the shell having attaching »ins include highly polymerized and plasticized vinyl chloride (“Koroseal”) and various copoly 30 projections I6 which are preferably embedded in the plastic layer 12, the cylindrical portion ex— mers of vinyl chloride and vinyl acetate (known tending through a hole in the leather layer l0. Having thus described my invention, what I In order to resist without cracking the con claim as new and desire to secure by Letters Pat tinual bending and distortion to which a pad cov er is subjected in use, such resins must be highly 35 ent of the United States is: 1. In a sole-attaching press having a pad for plasticized and, when so plasticized, their recov pressing a shoe sole, a cover for said pad com ery after distortion is relatively slow so that un . prising a layer of leather and a layer of polymer der some conditions a cover entirely of plasti ized synthetic vinyl resin on its exposed face. cized vinyl resin is not entirely satisfactory. 2. In a sole-attaching press having a pad for I have found that a pad cover consisting of a 40 pressing a shoe sole, a cover for said pad com lower layer of leather and an upper layer of syn as “Vinylite") . I prising a layer of leather and a layer of Vinylite on the outer face of the cover. thetic'resin, preferably with the layers cemented to each other throughout then-engaging surfaces, possesses all the characteristics desired in a pad cover. The leather promptly resumes substan tially its original shape after distortion and there 3. In a sole-attaching press having a pad for ' 45 pressing a shoe sole, a cover for said pad compris ing a lower layer of resilient leather and an upper fore causes prompt return of the synthetic resin - surface also. The leather is protected by the syn thetic resin layer from water which may be - squeezed out of the sole under pressure and from 50 accidental contact with the cement or cement sol vents which might otherwise be absorbed by the‘ leather and adversely affect its action as a pad cover. layer of synthetic polymerized vinyl resin, said layers being caused to adhere throughout their opposed surfaces. _ 4. In a sole-attaching press having a pad for pressing a shoe sole, a cover for said pad compris ing a lower layer of resilient material and a thin upper layer of highly plasticized polyvinyl chlo ride resin, said layers being caused to adhere The drawing is a perspective view' of a pad 55 throughout their contacting surfaces. cover embodying the present invention. - ' In the drawing, the numeral Hi represents a EMERY R. DAVIS.