PLATING OR COATING METALS N 1861. A.D. 1861, January 7.-N° 43. BAGLEY, WILLIAM, and MINCHER, WILLIAM.-(Provisional protection only.)—" Certain improvements in coating metals and alloys of metals.” 66 66 66 "Our invention consists in improvements in coating metals and alloys of metals with lead, either pure or alloyed with copper. The sheet or other article, if of iron or steel is first scaled by the common process, and afterwards pickled in a "bath of diluted muriatic acid. It is then removed to a second "bath containing muriatic acid, lead, either white or metallic, " and arsenic." The sheet of iron is immersed into the said second bath" until it has taken up a coating of lead and arsenic, "which is intended to act as a flux in the next operation; this "is the removal of the iron to a bath of molten lead, or of lead alloyed with a small proportion of copper, into which it is plunged and allowed to remain a few seconds, or longer if necessary, until a good and sufficient coating is formed upon "the iron, after which it is removed from the bath and cooled, " and finished if requisite by rolling. The combination of the copper with the lead is effected by mixing the two metals together, each in a molten state. 66 66 66 66 66 66 66 "In coating sheets of copper, zinc, or any of their alloys, the process will be precisely the same with the exception of the scaling-in substitution, for which we should employ the usual cleansing by means of a bath of aquafortis." [Printed, 4d. No Drawings.] M. M. A A.D. 1861, January 7.-N° 44. BAGLEY, WILLIAM, and MINCHER, WILLIAM.—(Provisional protection only.)-" Certain improvements in coating metals and alloys of metals." 66 66 66 "The sheet or other article, if of iron or steel, is first scaled in "the ordinary way, then pickled in a bath of diluted muriatic acid, after which it is to be suspended in a bath consisting of "muriatic acid saturated with zinc, a slight excess of muriatic "acid being afterwards added to make the solution sufficiently "active. In the same bath, and attached to one pole of a battery, " is a piece of zinc, the article to be coated being connected to the opposite pole, thus a coating of zinc is deposited upon the sheet, forming a flux or base to receive the subsequent coating of lead or alloy of lead and copper which is to be applied by immersing "the sheet in a bath of molten lead, or of lead alloyed with copper. "This process may also be effected without the employment of "the battery above-named by dipping the sheet in a solution of "chloride of zinc to form the flux before coating with the molten "metal. 66 66 "In coating articles of copper, zinc, or any of their alloys, the "first process, namely, scaling, will be dispensed with, simple cleansing by means of a bath of aquafortis being employed in "its stead." [Printed, 4d. No Drawings.] A.D. 1861, February 8.-No 317. BANKS, THOMAS, and MORGAN, THOMAS. "An improve"ment or improvements in coating sheets or plates of iron with "lead or tin, or alloys of lead and tin." "Our invention consists in the use of rosin, either alone or "mixed with tallow or palm oil or other fatty matter, or with sal ❝ ammoniac or other flux, in place of the flux or layer of grease 66 ordinarily put on the surface of the melted metal in which "plates or sheets of iron are immersed to be coated." The rosin is confined to that portion of the surface of the bath at which the iron sheet is immersed. According to one method, the rosin is confined in a box "having long narrow openings at top and bottom, through the upper of which openings the sheet or plate is introduced into the rosin ;" the said sheet passes from the lower opening in the box into the bath of melted metal, 66 the lower opening being "just immersed in the melted metal;" the rosin is preserved in a melted state by means of a steam casing that surrounds the box. According to another method, the bath is contracted in width near the top, and the rosin occupies this contracted portion. A third plan consists in using a bath with a partition extending across the top; the melted metal on one side of the partition is covered with rosin, and on the other side it is free from rosin. In the first two arrangements the plate is "passed "into and withdrawn from the melted metal through the rosin ;" in the third arrangement, the sheet or plate may be introduced at the part of the bath which is covered with rosin and withdrawn at the uncovered part of the bath, or the plate may be afterwards plunged into the uncovered part of the bath. [Printed, 4d. No Drawings.] A.D. 1861, February 12.-N° 353. PARKES, ALEXander. 66 (Provisional protection only.)—" Im provements in electric telegraph conductors." "When the conductors are composed of copper, in order to "increase the conducting power, in place of drawing or rolling 66 out a rod of copper to the desired size and section as heretofore, "I employ one or more tubes, and place them one within the "other, generally filling the centre with a solid rod of copper. "I then extend the same by drawing or rolling; and when using "silver in combination with copper as a conductor, in order to "increase the conducting power, I proceed as follows : I place 66 a tube or rod of silver within a tube of copper, or I introduce "several tubes or rods of silver into an outer tube or tubes of copper, or silver and copper may alternate. These are then "drawn or rolled down to the desired extent, the object being "to obtain silver within copper, and in place of the silver being "prepared separately the tubes or rods introduced into copper "tubes may be first electrotyped or coated with silver before introducing them into the outer tube of copper; or copper may be deposited on to silver, and in that condition drawn or rolled. It is desirable that the copper and the silver used should be as pure as may be, though the same may be alloyed "with each other, and to some extent with other metals." 66 66 [Printed, 4d. No Drawings.] |