Repertory of Arts, Manufactures, and Agriculture: Consisting of Original Communications, Specifications of Patent Inventions ..., Band 3G. and T. Wilkie, 1844 |
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Seite 52
... fixed with hyposulphite of soda in the same way as the negative copy was . But this latter process is not without difficulty , for I have found formerly , that copies apparently well fixed began to suffer a change after a month or two ...
... fixed with hyposulphite of soda in the same way as the negative copy was . But this latter process is not without difficulty , for I have found formerly , that copies apparently well fixed began to suffer a change after a month or two ...
Seite 101
... fixed on two axes , m , which receive motion from a steam - engine or other power , by a strap acting on the pulleys fixed thereon . In other re- spects the machine is similarly constructed to that above described , and the parts are ...
... fixed on two axes , m , which receive motion from a steam - engine or other power , by a strap acting on the pulleys fixed thereon . In other re- spects the machine is similarly constructed to that above described , and the parts are ...
Seite 308
... fixed by the heat , the stone must be corroded by a solution of nitric acid , and thus an irregular ground is obtained . The size of the grains of resin , the degree of heat necessary to be given to the stone in order to fix the said ...
... fixed by the heat , the stone must be corroded by a solution of nitric acid , and thus an irregular ground is obtained . The size of the grains of resin , the degree of heat necessary to be given to the stone in order to fix the said ...
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annealing apparatus applied arrangement axis bars calotype capstan cards carriage claim colour combined construction County of Middlesex cylinder described the nature drawing employed Engineer ENGRAVING Enrolled fabrics Fahrenheit fatty or oily February 24 fibrous figures flyer frame Gentleman glass guard plate heat hollow screw plug improvements in machinery india rubber invention consists invention relates iron Learned Friend letters patent machine magnesia mandril manner manufacture material means metal Middlesex mode months mould nitrous nitrous acid November 25 obtained oily bodies operation palm oil passing Patent for Improvements Patent granted pipe piston placed plaintiff plane presents produced pump punches purpose quantity Rubery screw threads Sealed shaft sheet shewn shown side sieves solution specification spindle steam stearic acid substance suitable sulphuric acid surface tallow thereof threads tion top-tips tubes understood upper valve vessel wheels WILLIAM witness whereof workman yarn