INDEX.

PAGE

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