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Absorption of sulphur process 100
Absorption of water by india rubber 31
Africa, ways of collecting rubber sap 15–17
Analysis of sap of india rubber tree 27
Apparatus for stamp making 61–63
Artists’ burned rubber 136–137
Balloons 95
Bands, india rubber 41
Bicycle tyre cement 125
Blacking, india rubber 142
Borax and water solution of rubber 106–107
Brazil, ways of collecting sap 20–21
Bromine as vulcanizer 100
Bulbs, how made 92–93
Burned rubber, artists’ 136–137
Calendering 43
Cane tips 90
Caoutchin 30
Caoutchoucin 30
Caoutchouc, (see India Rubber.)
Cements 125–128
Clamp for vulcanizing press 52
Cohesion of rubber, its importance to the manufacturer 26–27
Cold curing 100–102
Composition for stamps and its moulding 113–120
Composition inking pad 118–119
Composition stamp handle 117–118
Cord, rubber 92
Corks 90–91
Curing 44
Curing, how to judge of completion of 70
Curing in liquid bath 97
Curing in sulphur bath 99
Curing, temperature of 58
Central America, ways of collecting rubber 18–19
Chair leg tips 90
Chalk plates 83–84
Chlorine as vulcanizer 100
Chloroform as a solvent 105
Coagulation of sap by a plant 19
Coagulation of sap by alum 22–23
Coagulation of sap by fire 21–22
Coagulation of sap by salt 18
Cohesion of pure rubber 25
Dating stamps, composition 116–117
Didot’s polytype for matrices 82–83
Distillation products of india rubber 29–30
Dolls, how made 92–93
Ebonite 108–111
Ebonite, polishing 110–111
Emery wheels and whetstones 139–140
Emulsion of caoutchouc 10
Etching 140–142
Fins, removal of 86
Flask for type moulding 74
Flong matrices 80–82
Flong paste 80
Fluid for mixing with plaster for matrices 55
Gas heated steam vulcanizer 53
Glue, marine 126
Glue stamps 113–120
Glycerine bath for curing 97
Goodyear, Charles 13–14
Gutta-percha 111–112
Gutta-percha, moulding 111–112
Gutta-percha, vulcanizing 111
Hektograph, composition 121–122, 124
Hektograph, how made and used 121–124
Hektograph ink (also see inks) 121
Hektograph sheets 124
India Rubber, absorption of water by 31
India rubber, African 15–17
India rubber, artists’ burned 136–137
India rubber, availability for small articles 85
India rubber, cohesion of unvulcanized 25
India rubber, composition of 27
India rubber, discovery of, etc. 11–13
India rubber, effects of temperature on 28–29
India rubber, elasticity of 29, 33
India rubber sap, its coagulation 11
India rubber sheet, how made 40
India rubbers, original way of making 10
India rubber stamp making without apparatus 71
India rubber stamps, home-made mould 48–50
India rubber stamps, starting point 47
India rubber, trees producing 9
India rubber tree sap, analysis of 27
India rubber type 73
India rubber, vulcanized, general properties of 32–33
India rubber, where collected 11
India rubber, inelastic, how made 31
India rubber, its mastication 38–40
India rubber, manufacture of 35–46
India rubber, necessity of drying 38
India rubber, points to be followed in moulding small articles 85
India rubber, preliminary operations in manufacturing 35–36
India rubber, preserving, etc. 134–135
India rubber, properties of 28
India rubber sap 9–11
India rubber stamp vulcanizing 58–60
Inelastic state of india rubber 31
Inks, special for stamping, etc. 129–133
Iodine and haloid vulcanizers 100
Isoprene 30
Leaves, skeletonized as models 92
Liquid bath curing 97
Machine for cutting sheet and threads 40
Machine for making mixed sheet 42–43
Machine for masticating 38–40
Machine for washing and sheeting 37
Mackintosh 13
Mackintoshes, how made 45–46
Marshmallow root for mixture with plaster 57
Masticated rubber, its easy solution 103–104
Masticating in mortar with benzole 103–104
Mastication of rubber 38–40
Materials mixed with india rubber 43
Matrices, various kinds of, for stamps 80–84
Matrix for stamp-making 54–55
Matrix making by casting 56–57
Matrix press 56
Matrix, process of making, for stamps 54–55
Mats 91–92
Metals, welding and cohesion of 25–26
Miscellaneous 134–142
Mixed sheet 42–44
Mixed sheet for stamps 47–48
Mould, home-made for stamps 48–50
Moulding and curing stamps 58–60
Moulds for composition stamps, temperature of 120
Moulds, material for 86
Naptha and volatile solvents, danger of 107
Naptha, solvent 104–105
Nicaragua, ways of collecting sap 19–20
Nitric acid as vulcanizer 100
Oil for composition stamp moulds 119–120
Oil for mould face 55
Oils fixed bad effect on solutions 105
Oxychloride of zinc cement for matrices 57
Papier maché matrices 80–82
Paraffin and rubber 105–106
Parkes’ process 100–102
Payen’s solvent 105
Pencil tips, moulds for 89–90
Phenyle sulphide as softener of vulcanized rubber 106
Plaster, dental for matrices 54
Press for moulding stamps, etc. 51–52
Press, gas-heated 52–53
Press, home-made 49
Press, matrix making 55–56
Products, general division of 35–36
Rods, stirring for laboratory 95
Rubber, origin of name 12
Rubber, see India Rubber
Salt bath for curing 98
Sap of india rubber tree, analysis of 27
Sheeting and washing 37–38
Sheet rubber, how made 40
Sheet rubber, its joining 94
Shellac for strengthening matrix 55
Shoes, blacking for 142
Shoes, india rubber, cement for 127
Siphonia, origin of name 11
Solution, different views of 31–32
Solution, difficulties of 103
Solvents for rubber 104–105
Spring chase for matrices 56
Springs for stamp moulds 51
Springs on moulding press 51
Sponge india rubber 137
Stamp making 47
Stamps, rubber, substitute for 138
Stamps, see India Rubber, Composition and general titles.
Strauss’ method of coagulating sap 22–23
Suction discs, regular mould for 88–89
Suction discs, simple mould for 87–88
Sulphides, alkaline as vulcanizers 100
Sulphur, absorption process 100
Sulphur bath for mixing and curing 98–100
Sulphur chloride process 100–102
Sulphur, how mixed with gum 43
Sulphur, its escape from vulcanized rubber 33–34
Sunlight excluded from washed sheet rubber 38
Syringes made by Indians 11
Test for curing with knife 48
Thread, rubber, cut 41
Thread, rubber, moulded 92
Tissues, coated, how made 45–46
Tubes, connecting glass 96
Tube, seamless 92
Turpentine, a solvent for vulcanized rubber 106
Turpentine compared with caoutchoucin 30
Turpentine, viscid nature of solution 104–105
Type, india rubber 73
Type moulding flask 74
Type and stamps from vulcanized rubber 77
Type, cutting apart 75
Type, points in moulding 75
Type, quads, and spaces for stamp models 71–72
Type, steel moulds for 76
United States composition stamps 113–120
Varnish shellac for india rubber 137–138
Vulcanite 108–111
Vulcanization, its two steps 42
Vulcanization, steps in process 47–48
Vulcanized rubber stamps and type 77
Vulcanizer 52–53
Vulcanizer, fish kettle as a 69–70
Vulcanizer, flower pot 68–70
Vulcanizer, chamber 63
Vulcanizing and moulding stamps 58–60
Washing and sheeting 37–38
Water absorbed by india rubber 31
Waterproof composition for shoes 142
Waterproofing for battery cells 127–128
Zinc, chloride 57