Патент USA US2131378код для вставки
SePt- 27, 1938- _ , o.‘ L. LAWSON - ' 2,131,378 EDGE SETTING IRON Original Filed Jan. 2, 1936 2 Sheets-Sheet 1 Sept. 27, 1938. O_ |__ LAWSON 2,131,378 EDGE SETTING IRON Origirial Filed Jan. 2, ‘1956 J0 Y 2 Sheets-Sheet 2 Patented Sept. 27, 1938 2,131,378 1 UNITED STATES2,131,378’PATENT 1 OFFICE I _ EDGE SETTING ‘IRON Oscar L. Lawson, Lynn, Mass., assignor to Na tional Development Company, Lynn, Mass, a corporation of Massachusetts January 2, 1936, SerialNo. Application‘RenewedAugust 18, 1938 ‘ ~ 2 Claims. (01. 12-103) This invention relates to edge setting irons as used in edge setting‘machines, for, setting 'th edges of heel toplifts or soles of shoes. An edge setting machine‘ in which the iron herein described is adaptedto‘be used is shown in the patent to Merton W. Howard, No. 1,829,800, 5 November 3, 1931. ‘ ‘ ' ‘ ' ‘ The operation of setting the edge of an at tached toplift has the object of ?nishing‘ and 10 polishing the raw edge of a toplift which has previously been inked or waxed, of rolling in the joint between the toplift and the heel so as‘ to close the joint and make the'. surfaces of the heel and toplift smooth and continuous, and of — molding the edge of the toplift so as to form thereon a projecting circumferential bead, a suitably shaped "bed” or surface between the ‘bead and the heel proper and a portion known as the “panel” at the outer side of the bead, wo 57,084 ' > ‘operative surfaces can be supplied in this man ner, and when the entire operative surface is worn, it can be quicklyrenewed by again tum ing it on a lathe vand cutting it as before. The expense of manufacture and renewal is thus not 5 only greatly: reduced but the‘ user gets the equivalent of six v‘irons for the‘price of one. Before explaining in detail the present inven tion it‘ is to be understood that the invention is not limited in its application to the detailsof H O construction‘and arrangement of parts illustrated in the accompanying drawings, since the inven tion is capable of other embodiments and of being practiced or carried out in various ways. Also it is to be understood that the phraseology or teminology employed herein is-for the pur pose of description and not of limitation, and it is not intended to limit the invention claimed herein beyond the requirements of the prior art. 20 which panel is subsequently buffed off for the In the drawings: ?nal ?nishing of the toplift to bring the bead flush with the outer surface. These operations are usually performed bya heated iron having a Fig. 1 is a left-hand elevation of an edge set con?guration complementary to the desired'con ?guration of the bed, head and panel and'which is so manipulated with relation tothe vedge in question as to produce the above results. Previous edge setting irons with which I have ‘ . ting machine, in which my edge setting iron is adapted to be used. “ I‘ Fig. 2 is a perspective view of my edge setting iron. ‘ ing the parts in disassembled relation. “ Fig.4‘is'a vertical cross section on line 4—.-4 of Fig. 2. one piece consisting of a shank portion ?tting into a holder on the machine, and an integral Fig. 5 is a side elevation of a’modi?ed iron having a knurled surface. operative portion having the desired'surface con ?guration which portion is rounded or convex and is partially formed on a suitable cutting tool. It is impossible, however, to get a‘ proper ‘ surface on the operative portion of such an iron theI have same eliminated expensive hand a great work. deal of ‘this expense “ of manufacture and renewalof edge setting irons 25 Fig. 3 is a perspective view of the iron show been familiar (see Fig. 7) have been made in without a great deal of hand ?ling and polishing done with the aid of a magnifying glass. This hand work has made edge setting irons relatively expensive articles if properly made. The sur-' face of an iron also wears down quickly and has to be recut frequently, involving arepetition of 5 ' ' i 304 Fig. 6 is a diagrammatic representation of the cycle of operations of my edge setting iron on a toplift. ‘ , vFig. '7 is a diagrammatic representation of an old type iron operating on a toplift. Referring to the drawings, Fig. 1 is a side ele vation of the edge setting machine shown in Howard Patent No. 1,829,800, in which my edge setting iron is adapted to be used. The ma- ' ‘chine in which the iron is used forms no part of my. invention, and it is unnecessary to de ‘scribethe‘same in detail. For full description ‘of the machine'reference is hereby made to the said Howard Patent No. 1,829,800. by my invention, which consists‘ in making the operative portion of the iron circular in shape and separate from the shank portion. The oper " My edge setting iron H] as shown in Figs. 2, 3 and 4 consists'of a hollow shank portion or stud ative member can be turned entirely on a lathe with a central hole [3 preferably threaded to receive the threaded stem 21 and a plurality of 50 holes [4 surrounding said hole I3 for receiving to give it its proper con?guration and finish. The operative portion is then mounted on the shank portion in proper position, as by a screw, and when one operative surface wears down a new surface is quickly presented merely by turning the circular operative member. As many as six ll having an extending supporting portion l2, attaching. pins I5. The operative portion con sists of a separate and circular or cylindrical plug [8 having an operative surface IS, a groove 29 thereon for producing ‘the bead of the topllft 56 2 2,131,378 and a ?ange 2| for producing the “panel” on the toplift. A central hole 22 therein corresponding to hole l3 in the shank member receives the screw 25 having the head 26 and threaded stem a revolution to the opposite corner as shown in Figure E. The heel is then turned in the oppo site direction repeating the operation (not shown). This is repeated as many times as may 2?. Plug l8 comprising the operative portion is, be necessary to set the edge properly. Fig. 7 pictures the old type of edge setting iron of course, ?xedly mounted on shank support 12 by means of screw 25. The assembled edge set operating on a toplift and illustrates one of the ting iron of Fig. 2 is then mounted in holder 30 di?iculties of such an iron; The iron 32, in set of the edge setting machine shown in Fig. 1. ting the corner-edge of the toplift of the heel 35, 10 Previous edge setting irons (as shown in Fig. 7 the corner of the toplift could not be set without herein and at 8 in Figs. 6 to 10 of said Howard. . using the corner of the iron, which necessarily Patent No. 1,829,800) have been made in one pushes in the corner of the toplift distorting the piece consisting of a shank portion and a rounded shape of the toplift. With the use of my edge operative portion. To set the edge on the cor setting iron l0, however, being circular in shape, ners of a Cuban heel, work has to be done on there is no corner on the iron and the corner of 15 the corners of the edge setting iron. This means that the surface con?guration of’ the iron must be carried out to the corners'which' cannot be done by machine work. In manufacturing, this iron is turned intermittently against the form the heel is not pushed out of shape in the edge setting operation. the edges on soles of shoes. A good operative 20 surface of the iron is always presented at any ing or cutting tool in the arc of a circle. But to carry out the desired con?guration to the corner angle. Also with old edge setting irons, it was possible to knurl only the. edges on substantially of the iron requires a great deal of hand work, filing and polishing byhand with the aid of a magnifying glass. If this hand work is not done it has to be “broken in” by actual edge setting and by the time it is broken in it is practically worn out. round heels; It was impossible to knurl the edge of larger Cuban heel toplifts at the corners be 25 cause in the old edge setting iron the radius of the knurling wheel was smaller than the radius of the curvature of the iron, and‘ at the corners the knurl work was held' away from the heel by the corners of the iron. My iron having a cir~ 30 This means that the surface must be renewed by recuttin'g and repolishing, duplicat 30 ing the previous operation. These difficulties of manufacture have been eliminated by my iron having a separate and cylindrical operating portion. This part can be machined by being put on an arbor and turned CAD U! against the forming tool in constant application. cular edge setting portion eliminates this di?i culty, since the knurling wheel and edge setting portion have the' same radius. The knurled effect can be carried clear to the corners of the toplift on Cuban heels. The ?nal polish can then be put on in a similar manner with a leather polishing wheel. All ex By means of my invention, 1 am able greatly to reduce the cost of manufacture of edge setting pensive hand work is thus eliminated. A uni form surface is provided all around the opera 40 tive portion which will give a .uniform edge to the toplift. Because of its circular shape at least six edge setting surfaces are provided which can be used consecutively. As one wears out, the screw 25 is loosened and plug l8 given a slight turn presenting a fresh operating surface. When these six operating surfaces have been used, the entire surface can then be again renewed, by duplicating ‘the previous cutting and polishing operation just described. I A knurled edge can also be provided as shown in Fig. 5. The operative portion of the iron is the same as before, but is cut transversely into two parts i8a and IBD and between them is mounted the knurling wheel 28 which is freely rotatable. The other parts of the iron, however, are stationary. Unless rotatable the knurling Wheel would, of course, not transfer the knurled design but would act merely as a ?le. Fig. 6 shows a cycle of operation of my edge 60 setting iron on a toplift. Fig. 1 shows my edge setting iron In in use, a Cuban heel 35 being mounted in the jack ready for the‘ edge setting operation. In Fig. 6 beginning with Figure A at the top and. proceeding therefrom through ?gures B, C, D and E consecutively the edge of the toplift is presented to the iron beginning at one corner and is then rotated three-quarters of , In addition to the foregoing advantages, my edge setting iron also is better adapted for setting 35 irons,.and at the same time give the shoe manu facturer an iron having six operating surfaces’ before having to be renewed, and the renewal of 40 such surfaces is easily and inexpensively done. Many heel or shoe factories have had to have one or more men doing nothing else than reshaping and polishing edge’ setting irons. ‘The expense of maintaining such irons is greatly reduced by 45 ‘ means of my invention. I claim: ' 1.'An edge setting iron having a shank portion and a separate ' operative portion detachably mounted thereon, comprising a cylindrical mem ber having a pro?le corresponding to the con 50 ?guration to be placed on the work, which is ordinarily stationary, but is rotatable to present 'a new operative surface ‘when one surface is worn out, and a freely rotatable ornamenting wheel mounted on said cylindricalwmember. 55 2. An edge setting iron having a shank por tion, and a separate operative portion detachably mounted thereon,.comprising a cylindrical mem ber divided transversely into two disks which are ordinarily‘ stationary, butj arerotatable to pre 60 sent ‘a. new operative vsurface when one surface is worn out, and having?a freely rotatable orna menting wheel mounted between said disks, said member havinga'pro?le corresponding to the 65 ‘con?guration to be placed on the work. . .7 ' " OSCAR L. LAWSON.