US821336A - Shoe-sole vulcanizing and applying apparatus. - Google Patents

Description

PATENTED MAY 22, 1906.

G. F. BUTTERFIELD. SHOE SOLE VULCANIZINGA-ND APPLYI'NG APPARATUS.

PPLIOATION FILED MAYZB. 1905.

2 ASHElliTS--SHEBT 1.

y TA/ LSSS No. 821,336. PATBNTED MAY 22, 190e. G. P. BUTTERFIELD.

i SHOE SOLEVULCANIZIN-G ANDAPPLYNG APPARATUS. V

APPLICATION MLBD MAY 29.1.1905.

z SHBETS-SHEET 24 by hand the tuli pressure required, so these` lteys or Wedges 2O merely serve to hold the parts together until greatly-increased pressure can be applied, when the frames are introduced for a time into the press. Before this, however, l bring together the clamps or presser-plates 21 against the sides of the shoe at the under side (in the drawings) of the Welt 3G. To facilitate this, the edges of abutment-plates and ledges l2- are slightly beveled, as shown at 3T, 1Fig. fi, and again in Fig. 6. Springs 24 are normally under considerable compression, and a further slight com-` pression is necessary to pla-ce plates 2] properly in position. Threaded rods or bolts 25 serve to bring clamps 2l together as 'liar as the shoe will permit, and the adjustable bars 27 Will close any remainingaperture. The parts being tl'ius assembled, the frame is ready to reeeiveheat and pressure and is placed in a suitable press, and current is then applied to the heater it) by means ot bindingposts 3S. As pressure is applied any yielding of mold-plate i6 taken up by keys 20, and presser-plates 2l yielihagainst the action of springs 2li, so as not to in anyY way limit the amount oi' pressure against the foot-forni 15. lllhen sullicient pressure has been. applied and the yielding oi' the parts .has been taken up by keys or ivedg e120, the press is no longer needed, and my lrame is then removed to a suitable platform and subjected to a continuance of heat under the requisite pressure until proper vulcanization has taken lace.

lt will thus be observed that my frame in no Way depends upon. the pressing agency for heat, and such agency can be `freed for other-use soon my Wedges l() have taken up the pre sure so applied.

lt oi' course understood 'that the specific form of frame here shown can be v aried without departing from the spirit oi my invention. The whole apparatus inlay be inverted, so that the relative positions 4ol the base and mold-plate (shown in Fig. l) will be reversed, the heating-chamber being at the bottom instead of the top of the `frame. li steam is employed as a heating medium, this reversed position will be preferable unless the connections are through flexible pipes.

l claim as my invention- Lain a vulcanizing apparatus, a holdingrame having a body or base portion and terminalupriglits and an intermediate supporting device erected on said base for the article under treatment, in combination with a mold-plate to receive the rubber and'apply it to said article, and formed With a chamber or space adapted to receive the heating means for vulcanizing the rubber, and with pressure mechanism for holding the parts in close contact during the operation, suoli combined. mold-plate and heatin -chamber and such article and pressure mec anism being together removable in said frame from the press, Without interrupting the vulcanzing operation, substantially as set forth.

2. In a vulcanizing apparatus, a shoe-holding trame having a base, terminal upriglits and an intermediate last or foot-form erected on said base for the shoe under treatment, in combination with a relatively movable section comprising a mold-plate and heating device formed integral, made removable from the end posts but connected thereto by pressure devices, and with marginal clamps iitting the outlines oi the shoe vand transverse sliding bars at the mold ends to prevent'the escape or' rubber, substantially as set iorth.

3. ln a vulcanizing apparatus, a shoe-holda base, terminal nprights and an intermediate last or foot-form secured thereon, in combination With a top section comprising an inverted mold,- plate and a heating-chamber above and. adjacent thereto, and With marginal lamps for the shoe edges arranged for lateral adjustment, the heated air rising :troni such elevated chamber produ cing no injurious eiiect upon theleather ot the shoe-body during vulcanization, substantially as set forth.

4. ln a vulcanizing apparatus, a shoe-holding irame having a base, vertical end posts provided with transverse keyways and an intermediate last or foot-form secured to said base, in combination with a removable top section recessed to admit the upper ends of the end posts and comprising a sole-shaped mold and a heating device vformed integral, suoli top section extending ndr-'mally somewhat above the end posts, secured thereto by keys in said leyways, and adapted to be pressed downwardly by the platens oi" a press in which said treme may be placed for additional pressure vwhen required, substantially as set forth.

5. in a vulcanizing apparatus, a shoe-holding frame having a base, a last or foot-form erected thereon, vertical end posts with terminal pressure devices and projecting ledges at an intermediate point, in combination With marginal clamps for the shoe edges yieldingly supported'upon said ledges, a removable top section'comprising a mold-plate to receive the rubber and a heating device for vulcanizing i-t, such section having a limited vertical movement With relation to the ing trame having foot-torni and clamps, varying according to the amount and nature 'oi' the pressure exerted, substantially set forth.

6. In a vulcanizing apparatus, a shoe-holding `ira-me having .a base, a last or loot-form erected thereon, vertical end posts with 'terminal pressure devices, projecting ledges at an intermediate point, and abutment-plates resting on such ledges, in combination with an integral mold-plate and heating device', marginal clamps ior the sole edges, springs interposed. between such clamps and the IOO estese abutment-plates and adjusting-screwsholding said springs to the clamps in proper position,lsubstantially as set forthn 7. In avulcanizing apparatus, a shoe-hold `ing'frame having vertical end posts and an intermediate last. or foot-form erected on the base thereof,lin combinationwith a removable top section comprising an inverted moldplate to receive the rubber and a heating device for vulcanizing it, said section being recessed to admit the end posts to which it is applied verticall apair of mar inal clamps -conformin to t e outlines of t e shoeandv adapted to receive .a body of vulcanizable or ,semivulcanized rubber compound, a shoeholding frame connected thereto yand'comprising a foot-form and marginal clamps to secure the shoe in position and control the tical end posts erected on its base portion, 1n

rubber during treatment, in combination A with vulcanizing apparatus actuated `by an electric heating-current, and with efficient pressure mechanism, servin to hold the shoeottom rmly upon the ru ber in the mold with the clamps in proper marginal position during the vulcanizing operation, substantially as set forth. A

9. In a vulcanizing' apparatus, a shoeholding frame having a last or foot-form and ve r-.

combinatlon with a mold ,-plate, heating means and pressure mechanism for applying and vulcanizing the rubber sole, and marginal clamps to aid in confining-the rubber in the mold, and with insulating material interposed between thel marginal clamps andthe shoe and between the heatedl mold-plate and the frame-posts, to limit the conduction of heat to the shoe, substantially as set forth.`

In testimony whereof I have affixed my signature in presence of two Witnesses.

GEORGE F. BUTTERFELD.

Witnesses: y

A. H. SPENCER, H. W. Lann.

Images