March 1, 1921 



THE INDIA RUBBER WORLD 



401 



drawn tight with a bracket and jack operated by hand. 



3. Form used for vulcanizing full heels on boots and for vul- 

 canizing pieces on boot legs. Pressure against the end is obtained 

 with a follower plate and a clamp, and a pressure on the top sur- 

 face with a canvas band drawn taut with a bracket and jack. 



4. Upturned form used for repairing the toe and sides of boots 

 and rubbers; a swinging bracket and jack gripping a canvas band 

 apply pressure wherever desired. 



5. Mode of producing pressure on a repair job by means of a 

 bracket, jack and a canvas band. 



6. Half-soling form to be set on a steam table showing a foot 

 form on which the boot fitted with a bendable lead mold for the 

 sole, is set for curing. The loose clamp is put into the boot, its 

 lower end being made to tit into the slotted guide of the last ; the 

 frame supports the foot form, clamp, and the screw above by 

 means of which pressure is applied for vulcanizing the half sole 

 to the boot. 



METHOD OF USING HALF-SOLING FORMS 

 The mode of using the half-soling forms is more fully explained 

 in the following description : The gum tread prepared for the 

 half sole is set in the flexible lead mold, after the latter has been 



set on cast-iron legs and having side flanges which grip two 

 wish-bone clamping devices set above the hot-plate and used in 

 the half-soling process. Pressure for curing a sole repair is given 

 the auxiliary clamp, which fits inside the boot or shoe placed on 

 the hot plate, by turning a wheel somewhat like that used on a 

 copying press and which is set in the top of the wish-bone clamp. 

 From one side of the steam table project two inside hollow boot 

 molds, one large and one small, with two revolving arms and ex- 

 tensions, and four sets of double thumb screw pressure clamps 

 with which to tighten tapes on footwear placed on the boot molds. 

 For the half-soling work the outfit also provides seven pairs of 

 suitably indented sole plates in sizes assorted from 3 to 14, with 

 seven pairs of inside sole lasts to work with the sole plates, and 

 three different sizes of heel molds. 



Other Miller apparatus are inside boot vulcanizers to be at- 

 tached directly to a steam line, the equipment including a revolv- 

 ing arm with extension, double thumb screw pressure clamps, 

 and wall tee fitting for affixing to wall or post. Half-sole and 

 heeling equipment can also be had separately to be used with any 

 hot-plate used by inner tube lepair men. This outfit usually in- 

 cludes large clamps, auxiliary sole clamps, heel molds, button 



FooTWE.XR Curing Forms 



Thk .Mim.kk Rkpair Vui.c.vnizkr 



closely shaped and upturned about the old sole. The boot so 

 fitted with the gum and the lead mold is then set on the foot 

 form and the proper size last placed inside the boot. Then the 

 loose clamp is inserted in the boot and its lower end fitted into 

 the slotted guide of the last. The upper end of the clamp fits into 

 a slot in the upper part of the frame, and needed compression for 

 curing is obtained by tightening the screw on top. The repair job 

 is then left on the steam vulcanizing table, the time for curing 

 ranging from 40 minutes to an hour, according to the degree of 

 heat used, the quality of the gum tread, and the thickness of the 

 sole. 



THE MILLER MACHINE 

 A very efficient vulcanizing apparatus for the average footwear 

 repair shop is the Miller repair vulcanizer designed for attaching 

 to a steam line. It is equipped with a gas burner to generate its 

 own steam, or with a force- feed gasoline burner for steaming. 

 This outfit, capable of making all the usual repairs on any boot 

 or shoe, consists of a hot-plate or steam table, 30 by 7% inches. 



sole plates with high side walls, and in.^ide sole lasts to work with 

 the plates and in sizes ranging from 3 to 14. 

 THE M & E SYSTEM 



The M, & E. system is quite simple and very compact. It con- 

 sists in brief of a steam table upon the top platen of which are 

 built a variety of special molds adapted for all boot and shoe 

 repairs. 



The steam table consists of a series of molds on the hot plate, 

 the size of which is 32 by 17 inches. The molds are designed 

 to conform to the different shapes taken by the various angles 

 of a boot or shoe, permitting the repair to be made, no matter 

 where the rip, tear or worn out spot may be. The vulcanizing 

 is done on the outside, as no boot lasts or other inside contri- 

 vances are used. It is claimed that this outfit will resole, reheel 

 and put patches on the edges, sides, back of the heel, or instep. 

 In addition, it will repair hot-water bottles, hospital sheets, rubber 

 gloves, tennis shoes, rubber coats, football bladders, inner tubes; 

 in other words, any sort of a rubber article. 



