US1647301A - Alloy for pen points - Google Patents

Description

Patented Nov, 1' 1927,

I UNI-TED STATE-S PATENT -FFl CE.-'

x. LEme', or. nEwAEx', NEW JERSEY, nssrenon'ro niuEnrcAn 21.1mm worms, or NEWARK, NEw JERSEY, noonronnrron on NEW JERSEY.

Armor Eon PEN romrs;

R0 Drawing.

This invention relates, to metallic alloys ofa particularl hard,tough, noncorrodible nature, adapted specificallyifor use on the points of writing pens of the highest type. 5 .It isone of the features of the invention to provide an alloy that may be substituted for osmium iridium, as commonly used for gold pen points, and which possesses superior characteristics, such for instance as greater.

7 10 uniformity in grain, color and uniting properties'to pen nibs; 4 h

These objects are accomplished by the novel combination and blending of certain rare or noble metals as hereinafter described and later claimed.- 4 Y The preferred form of: the alloyis com,-

posed of molybdenum predominately, t0--' gether with lesser amount; of other metals selectively of the platinum group,'said group c'onsisting'of platinum, iridium, palladlum, rhodium, osmium, and ruthenium, in the approximate proportions set forth:

. Parts. Molybdenum 80- 5 Metals of platinum group 20 I have found that the molybdenum may be reduce and nickel or a nickel copper alloy added, and lesser ore tions of other metals selectively of the p atinum group, said group consisting of plati-' I ,num, 1ridium,'palladium, rhodium, osmium,

and ruthenium, this nickel-copper alloy containing a large ercentage of nickel, and

some copper .whic tends to render the alloy more easily "workable;

T the alloy may be'given as follows:' I

' I Parts.

Molybdenum 7 6O 40 Nickel-copper alloy 30., Rhodium or -ruthenium;.' 10

-Pnrts. M01 bde a Nic el-copper alloy 20 .nn I 7 10 v Rho or rutheniuin 10 have'also found that 60 parts molyb-.

above set forth willibe (proportions of properties ofthis last example of P the balance per,- the nic e1 excee ng the copper, and

Application filed March 1, 1926. SeriaL No.v 51,621.

denum and 30 parts nickel-copper alloy or 30 parts'of nickel alone with 6 parts platinum and 4 parts Os'mi-iridium will produce anlalloy having the properties above set forth. In some cases, I have also found, by reducing the nickel. or nickel-copper alloy to 20 parts and adding'fiO parts molybdenum, 10 parts tungsten, 6 partsrplatinum, and 4 partsosmi-iridium, an alloy possesing great strength and having the properties reduced. In the detail descrip'tlon I have set forth 7 several difieren't forms" of my invention all of which possess in some degree thech arac teristics heretofore set forth, which in others some of the properties are more pronounced and while the proportions of the ingredients of'ithe alloy generally may be varied between fairly wide limits to meet'the condi- .75 tions and requirements of the several uses to which the allo may be put, yet the gen:

eral pro erties a ove set forth are present in some egree in each of the forms specified. The foregoing is considerably lower in specific. gravity than osmium iridium and lacks its characteristic brittleness, being rel"- atively' tough, dense and hard. It is furthermore readily fused with gold, presenting a silver-gray color, capable of receivinga high polis t will be obvious to those skilled in the art, after understanding my invention, that modifications and substitutions of equivalents may be'made in the alloy without deartin from the spirit and scope of my invention, and that my invention is not to be limited to any articular method of mak-. ing the alloy, an I aim in the appended claims to cover all modifications, substitutionsand changes within the scope of my invention.- Having thus described my invention, what I claim asjnew and desire .to secure by Letters Patent, is:

1. An alloy of the class described, con-. sisting predominately of molybdenum and.

rincipall of nickel and coplesser amounts of tungsten and other metals 105 selectively of the platinum group,-said group consisting of platinum, iridium, palladium, rhodium, osm1u m and ruthenium.

2. An alloy of the class described containing parts molybdenum, twenty mela nickel-copper alloy said alloy consisting of co per, ten parts tungsten, and ten arts of 70 parts nickel and 30 parts copper, ten ot er metals selectively of the p atinum -1 parts tungsten, and ten parts ruthenium. ,group, said group. consisting of platinum,

3. An alloy of the class described, non-' irridium, palladium, rhodium, osmium, and

5 fibrous and of extreme hardness, said alloy ruthenium.-

containing sixty parts molybdenum, twenty This specificationsigned and witnessed parts nickel-copper alloy said alloy consistthis 25th day of February, 1926. ing of seventy parts nickel and thlrty parts 'KUR-T K. LEDI-G.