We here disclaim the use of rubber and sulphur alone, as also the submitting of rubber or rubber compounds to a high degree of heat; neither do we wish to secure the right of coloring rubber, such having frequently been done by rubber manufacturers. But what we do claim as our invention, and desire to secure by letters patent, is India-rubber fabrics made by the combination of caoutchouc in its several varieties, with zinc compounds, in their various forms, as herein set forth, and sulphur; and in combination with these, the submitting our compound to the action of a high degree of heat; the whole being combined and manufactured substantially as above described. _Fifty-second_, to Nelson Goodyear, Oct. 16, 1849. For improvement in elastic cords for suspenders. I do not claim simply covering threads of metallic or vulcanized rubber with braid, as this has long since been done, but not whilst the India-rubber is in a state of tension; nor do I claim simply combining non-elastic cords with the button-hole pieces, and with the shoulder straps of suspenders, by passing such cords through loops or around rollers attached to the shoulder straps, as this has also been long known; but— What I claim as my invention, and desire to secure by letters patent, is the making of elastic cords for suspenders, by braiding or winding silk, cotton, or other threads, around cords of metallic or vulcanized India-rubber, whilst in a partially distended state, substantially as described, whereby springs of greater resisting force are produced, than by any other known plan. _Fifty-third and fifty-fourth_, to Charles Goodyear—re-issued—Dec. 25, 1849. For improvement in processes for the manufacture of India-rubber. What I claim as my invention, and desire to secure by letters patent, is the curing of caoutchouc or India-rubber, by subjecting it to the action of a high degree of artificial heat, substantially as herein described, and for the purpose specified. And I also claim the preparing and curing the compound of India-rubber, sulphur, and a carbonate or other salt or oxide of lead, by subjecting the same to the action of artificial heat, substantially as herein described. For improvement in felting India-rubber with cotton fibre. What I claim as new and of my invention, is incorporating the fibres of cotton or other substances, with India-rubber, by pressing the fibres of a fleece or bat of cotton or other fibrous substance into a sheet of India-rubber in the green state, without subjecting the fibres, after they have been incorporated, to a stretching or drawing operation, substantially as herein described.