Патент USA US2114197код для вставки
Àpriì 12, 1938. E_ A_ wlLLEY SHOE PRESS Filed April 5, 1937 (ì 2,114,197 2 Sheets-ShawI l April 12, w38. E. A. WILLEY - ' 2,1Í4yì97 SHOE PRESS Filed April 3, 1937 2 Sheets-Sheet 2 «b1-g l ` m 'Ef gr. 2,114,197 Patented Apr. 12, 1938 STATES PATENT OFFiCE iT E il; ` 2,114,197 SHoE PRESS Edward A. Willey, Malden, Mass., assigner to Converse Rubber Company, Malden, Mass., a corporation of Massachusetts Application April 3, 1937, Serial No. 134,813 4 Claims. This invention relates to a fluid pressure ap paratus for pressing 4strips of sheet material (Cl. 12-1) 3 and 4; The bottom wall I0 is provided with threaded apertures which receive screw-threaded stems I4 and I5, and these stems carry an elon about the lasted upper of a shoe. In the manufacture of rubber soled shoes it is gate plate Iß which provides a support for hold ing the lasted Shoe in spaced relation to the bot 5 customary to apply a foxing strip or the like piece . tom and side walls of the compartment, the plate of sheet material to the lower edge of the lasted upper before applying the outsole. As the foxing strip extends completely around the lower edge of the upper with its edge inturned so as to over lie the bottom of the shoe, great care must be taken in order to obtain a satisfactory bond between the foxing strip and the irregular sur faces of the shoe. In accordance with the usual practice, the foxing strip is caused to adhere 15 either by means of a manually operated hand roller, or a machine actuated roller. The use of a manually operated roller is time consuming and costly and although the use of a machine actuated roller reduces the time element some 20 what, such machines are expensive and are not always satisfactory. In either case the pressure applied to the foxing strip at diñerent points about the edge of the shoe is apt to be ununiform, and furthermore the pressure can not always 25 be maintained for a length of time sufficient to permit the cementitîous material to set or pro duce a satisfactory bond. i The principal object of the invention is to pro vide an improved press which is of simple oon 30 struction, reliable and efficient in operation and which overcomes the aforementioned objection able features of the apparatus heretofore used. Further objects will be apparent from a con sideration of the following description and ac 35 companying drawings, wherein: Fig. ll is an elevation of a press constructed in accordance with the present invention; Fig. 2 is an enlarged top plan view of one of the pressing compartments; I6 being substantially narrower at the width of the bottom of the lasted shoe so as to leave its marginal portions exposed. The top of the com partment is provided with a cover plate 2U hav ing a shape conforming to the bottom wall Ill and an opening 2l which provides access to the interior of the compartment, the opening 2l pref erably being shaped to permit a lasted shoe to be easily inserted and removed from the com partment. The upper edges of the side walls extend out wardly to provide flanges 24 .and 25 having mar ginal beads or ribs 26 and 21 which cooperate with corresponding beads or ribs 3Il and 3l 20 formed on the under surface of the cover and the top surface of the bottom wall, respectively. The lower flange 25 and the marginal portion of the bottom wall .are provided with registering openings which receive bolts or other fastening 25 elements 34 which hold the side and bottom wall members together. The upper flange 24 and the marginal portion of the cover plate 20 are also provided with registering openings which receive boltsv 35 provided with wing nuts 36, or the like 30v fastening elements for removably holding the cover in position. An elastic diaphragm 4I) extends about the side wall with its upper and lower edges securely clamped between the beads 25, 3D and 21, SI, the width of the diaphragm being such as to bulge inwardly to provide an expansible chamber 4I ‘ whose inner wall surrounds the supporting plate I6, as shown in Figs. 3 and 4. The wall I I is provided with an opening 44 which receives the 40 end of a pressure conduit 45 through which a and fluid pressure medium, such as compressed air, Fig. 4 is a section on the line 4-4 of Fig. 2. is introduced into and expelled from the cham The embodiment chosen for the purpose of il- ` lustration comprises a bench, table or the like ber 4I. 'I‘he parts are so constructed and arranged 45 45 supporting structure, here shown as having up right frame members I and 2, and upper and that when a fluid pressure-medium is introduced lower horizontal frames 3 and 4, the upper frame into the chamber 4I, it causes the diaphragm to 3 supporting a pair of spaced presses, designated expand so that its inner wall snugly embraces by the numerals 6 and 6a, and the lower frame the lower edge of the lasted shoe, as shown by 50 the dot and dash lines of Fig. 3, thus subjecting 50 supporting a control valve designated by the nu the foxing strip F to- a substantially uniform pres meral 8. Each of the presses comprises a compartment sure. Referring to Fig. 1, the conduits 45 of the having a bottom wall I0 and a side Wall I I whose shape resembles approximately the contour of the presses 6 and (ìa are connected by lines 46 and 55 55 lower part of a lasted shoe S, as shown in Figs. 46“, respectively, to the control valve 8, and lines Fig. 3 is a section on the line 3-3 of Fig. 2; 2 2,114,197 41 and 4'!a connect the conduits ¿i5 to pressure gauges 48 and 48a, respectively. The control valve 3 is connected by a line 5û to a suitable source of ñuid pressure, such as an air com pressor (not shown), the pressure applied to the chambers 4l being indicated by the pressure gauges 48 and d8a. The valve member of the Valve 8 is such that it may be manipulated by a pedal 52 so as to assume one of three positions: 10 a neutral position, as shown in Fig. l, wherein the lines 46, 46a and Eil are all disconnected from each other; a position wherein the line 46 is connected to the line 56 and the line 46a is con nected to an exhaust line; and a third position 15 wherein the line 46a is connected to the line 50 and the line ¿i6 is connected to the exhaust line. In using the apparatus a lasted shoe S having a foxing strip applied about its lower edge, is inserted in the press i5 and when properly posi tioned on the plate l5, the pedal 52 is depressed to connect the lines MS and 5B, whereupon the compressed air or other fluid pressure is admitted to the corresponding edges of said side wall by said plate and bottom Wall and means for intro ducing a fluid pressure medium into said chamber to cause it to expand and subject the edge por tions of the lower part of the lasted shoe to a substantially uniform pressure’. 2. Apparatus of the class described comprising a compartment having a side wall conforming approximately to the contour of the lower part of a lasted shoe, a plate secured to the upper edge of said side wall and having an opening through which the lasted shoe may be inserted in and removed from said compartment, and a bottom wall having adjustable means for supporting the lasted shoe in spaced relation to the bottom and 15 side walls, ilexible means extending about said side wall and defining an expansible chamber, the upper and lower edges of said elastic member being clamped to the corresponding edges of said side wall by said plate and bottom wall and means for introducing a iiuid pressure medium into said chamber to cause it to expand and subject the to the chamber @5, causing the diaphragm M to expand and subject the foxing strip to a substan lower part ofthe edge portions of the lasted shoe tially uniform pressure which is maintained for a period suiîicient to insure proper adhesion. In 3. Apparatus of the class described comprising a supporting structure, a pair of compartments mounted on said supporting structure, each of said compartments comprising a bottom wall, a side the meantime another lasted shoe with its fox ing strip applied, as above described, is inserted in the press 6a and when properly positioned, the 30 pedal 52 may be tipped in the opposite direction to introduce compressed air into the chamber lli of the press 6a and simultaneously exhaust the air from the chamber ¿ll of the press £3. During the period in which the lasted shoe in the press 35 6a is being subjected to pressure, the shoe in the press E may be removed and another inserted, and the operation continued. It will be noted that during the pressing oper ation the diaphragm @El snugly embraces the pe 40 ripheral portions of the lasted shoe and being iiex ible the wall ¿iii accommodates itself to the ir regularities of the contour of the edge of the shoe, thus folding the lower edge of the foxing to a predetermined pressure. wall conforming approximately to the contour of the lower part of a lasted shoe, a plate secured . to the upper edge of said side wall and having an opening through which the lasted shoe may be inserted in and removed from said compartment, means for supporting a lasted shoe in spaced re lation to its side and bottom walls and an elastic - member extending about the interior of the com partment between the supporting means and its side wall, said elastic member deñning an ex pansible chamber having an inner wall portion capable of being expanded so that it engages the 40 edge portions of the lasted shoe and subjects them to a substantially uniform pressure, and means for successively introducing into and exhausting strip inwardly and subjecting the entire foxing from the expansible chambers of the respective strip to a substantially uniform pressure which may be maintained for any desired period of time. compartments a fluid pressure medium. While I have shown and described one desir able embodiment of the invention, it is to be un derstood that this disclosure is for the purpose of 50 illustration and that various changes in shape, proportion and arrangement of parts, as well as the substitution of equivalent elements for those herein shown and described, may be made with out departing from the spirit and scope of the 55 invention as set forth in the appended claims. I claim: 1. Apparatus of the class described comprising a compartment having a side wall conforming approximately to the contour of the lower part oi 60 a lasted shoe, a plate secured to the upper edge of said side wall and having an opening through which the lasted shoe may be inserted in and re moved from said compartment and a bottom Wall having means for supporting the lasted shoe in spaced relation to the bottom and side walls, elastic means extending about said side wall and defining an expansible chamber, the upper and lower edges of said elastic member being clamped 4. Apparatus of the class described comprising a supporting structure, a pair of compartments mounted on said supporting structure, each oi 45 said compartments having a side wall conform ing approximately to the contour of a lasted shoe, 50 a bottom wall having means for supporting the lasted shoe in spaced relation to the side and bottom walls, a plate secured to the upper edge of said side wall and having an opening through which the lasted shoe may be inserted in and removed from said compartment and elastic means extending about the side wall deñning an expansible chamber, the upper and lower edges of said elastic member being clamped to the cor responding edges of said side wall by said plate 60 and bottom wall and means for successively in~ troducing into and exhausting from the expansion chambers of the respective compartments a fluid pressure medium to cause the respective chambers to expand and subject the edge portions of a lasted shoe disposed in said compartment to a substan tially uniform pressure. EDWARD A. WILLEY.