 | 1844 - 444 pages
...whiter. It is also rendered exceedingly permanent. After this process, I sometimes wax the picture, by causing melted wax to penetrate into the pores...object of which is to give increased transparency. This boiling process is applicable not only to calotypes, but also to the other kinds of photographic... | |
 | William Newton - 1843 - 536 pages
...whiter. After undergoing the above operation, the transparency of calotype pictures may be increased, by causing melted wax to penetrate into the pores of the paper. Under this improvement, the patentee claims the employment of hot or boiling solutions of the hyposulphites,... | |
 | William Newton, Charles Frederick Partington - 1843 - 536 pages
...whiter. After undergoing the above operation, the transparency of calotype pictures may be increased, by causing melted wax to penetrate into the pores of the paper. TJnder this improvement, the patentee claims the employment of hot or boiling solutions of the hyposulphites,... | |
 | 1844 - 576 pages
...whiter. After undergoing the above operation, the transparency of calotype pictures may be increased by causing melted wax to penetrate into the pores of the paper. The second improvement consists in placing a warm plate of iron behind the paper-holder, during the process... | |
 | 1844 - 580 pages
...whiter. After undergoing the above operation, the transparency of calotype pictures may be increased by causing melted wax to penetrate into the pores of the paper. Under this improvement, the patentee claims the employment of hot or boiling solutions of the hyposulphites,... | |
 | United States. Patent Office - 1848 - 840 pages
...whiter. It is also rendered exceedingly permanent. After this process, 1 sometimes wax the picture, by causing melted wax to penetrate into the pores of the paper, the object «f which is to give increased transparency. " In the above described process, I claim as my own invention... | |
 | Great Britain. Patent Office - 1859 - 670 pages
...whereby it is rendered white and permanent. Transparency is imparted to the picture after this process by " causing " melted wax to penetrate into the pores of the paper." 2. During the process of taking a calotype picture I place a warm plate of iron behind the paper holder... | |
 | United States. Patent Office - 1848 - 1028 pages
...whiter. It is also rendered exceedingly permanent. After this process, I sometimes wax the picture, by causing melted wax to penetrate into the pores of the paper, the object «f which is to give increased transparency. In the above- described process, I claim as my own invention... | |
 | William Francis, Henry Croft - 1844 - 568 pages
...whiter. After undergoing the above operation, the transparency of calotype pictures may be increased by causing melted wax to penetrate into the pores of the paper. The second improvement consists in placing a warm plate of iron behind the paper-holder, during the process... | |
 | 1851 - 412 pages
...whiter. After undergoing the above operation, the transparency of calotype pictures may bo inereased, by causing melted wax to penetrate into the pores of the paper. Under this improvement, the patentee claims the employment of hot or boiling solutions of the hyposulphites,... | |
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... point; the picture should remain in the bath about ten minutes, and be then washed in warm water, and dried. By this means, the picture is rendered more permanent and transparent, and its lights become whiter. After undergoing the above operation,... 