Workshop Receipts ...E. & F. N. Spon, 1883 |
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Página 16
... Brass . - The work to be brightened and coloured is first annealed in a red- hot muffle , or over an open fire , allow- ing the cooling to extend over one hour ; the object of the heating being to re- move the grease or dirt that may ...
... Brass . - The work to be brightened and coloured is first annealed in a red- hot muffle , or over an open fire , allow- ing the cooling to extend over one hour ; the object of the heating being to re- move the grease or dirt that may ...
Página 18
... Brass Arti- cles . - 1 part oxide of iron , 1 part white arsenic , 12 parts hydrochloric acid . Clean the brass well to get rid of lacquer or grease , and apply with a brush until the desired colour is ob- tained . Stop the process by ...
... Brass Arti- cles . - 1 part oxide of iron , 1 part white arsenic , 12 parts hydrochloric acid . Clean the brass well to get rid of lacquer or grease , and apply with a brush until the desired colour is ob- tained . Stop the process by ...
Página 19
... brass with a soft plate brush by gentle brushing . This will soon assume a polish , and is fit for lacquering . The brass must be made slightly warmer than for lacquering only . A little practice will enable the operator to bronze and ...
... brass with a soft plate brush by gentle brushing . This will soon assume a polish , and is fit for lacquering . The brass must be made slightly warmer than for lacquering only . A little practice will enable the operator to bronze and ...
Página 19
... Brass . - 30 parts of zinc and 70 of copper in small pieces . YELLOW BRASS , for Turning.— ( Common article . ) - Copper , 20 lbs .; zinc , 10 lbs .; lead from 1 to 5 oz . Put in the lead last before pouring off . Red Brass , for ...
... Brass . - 30 parts of zinc and 70 of copper in small pieces . YELLOW BRASS , for Turning.— ( Common article . ) - Copper , 20 lbs .; zinc , 10 lbs .; lead from 1 to 5 oz . Put in the lead last before pouring off . Red Brass , for ...
Página 19
... brass , 32 oz .; lead , 2 oz .; tin , 2 oz .; zinc , 1 oz . Metal for Taking Impres- sions . - Lead , 3 lbs .; tin , 2 lbs .; bis- muth , 5 lbs . White Metal . - Tin , 82 ; lead , 18 ; antimony , 5 ; zinc , 1 ; and copper 4 parts ...
... brass , 32 oz .; lead , 2 oz .; tin , 2 oz .; zinc , 1 oz . Metal for Taking Impres- sions . - Lead , 3 lbs .; tin , 2 lbs .; bis- muth , 5 lbs . White Metal . - Tin , 82 ; lead , 18 ; antimony , 5 ; zinc , 1 ; and copper 4 parts ...
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Termos e frases comuns
allowed alum ammonia antimony applied bath blue boiling borax bottle brass brush burnished calcined carbonate chloride clean cloth coat cold collodion colour cool copper covered cyanide deposit diluted dipped dissolved dried edge filter fire fustic gallons gelatine gilding glass glaze glue gold grains ground gutta-percha heat hydrochloric acid immersed inch iron leather lime linseed oil liquid liquor litharge logwood marble melted mercury metal mixed mixture mould nitrate nitrate of silver nitric acid oxide paint paper pearlash piece pint plate polish potash powder precipitate prepared pure quantity removed sal ammoniac salt seed-lac shellac soap soda soft solder solution spirits of wine stirring stone sufficient sulphate sulphuric acid surface thick thin tint tion turpentine varnish vessel warm wash white-lead wire wood yellow zinc
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