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Publication numberUS2222544 A
Publication typeGrant
Publication dateNov 19, 1940
Filing dateOct 17, 1939
Priority dateOct 19, 1938
Publication numberUS 2222544 A, US 2222544A, US-A-2222544, US2222544 A, US2222544A
InventorsJakob Spanner, Josef Leuser
Original AssigneeChemical Marketing Company Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Formed piece of silver palladium alloys
US 2222544 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

PatentedNov. 19, 194

ESKTP'ATEI '5 OFFICE FORMED PIECEOF SILVER PALLADIUM annoys Jakob Spanner, Neu-Isenburg,.and Josef Leuser,

Piorzlieim, Germany, assignors to Chemical Marketing Company Inc., New York, N. Y., a;

corporation No Drawing. Application October 17, 1939, Serial No. 299,908. In Germany October 19, 1938' 8 Claims.

Our invention relates to formed pieces made from precious metals, such as wires, sheets and the like,.especially pens, fountain pensand the like.

It is known that pens, fountain pens or the like may be manufactured from alloys containing palladium, silver, copper and, if desired, gold. These alloys are. on the whole very resistant against chemical influences but tend to corrosion by tension. The manifestation of this corrosion of tension will be seen by cracking or falling to powder of alloys owing to theginfluence of atmospherics, acids, salt solutions or the like,

sometimes withoutany visible cause. According to our invention this disadvantage may be avoided if formed pieces such as pens, fountain pens or the like are made from alloys with. the following composition:

. Per cent Palladium 20-60 Copper- 0-20 Nickel or zinc, iron, cobalt, tin, cadmium respectively 0-10 Silver Rest The nickel may be replaced by zinc, iron, cobalt, tin, cadmium or the like, either alone or in combination with each other.

Pens, for instance fountain .pens,- proved to are substantially free from the disadvantage of corrosion of tension.

These formed pieces, for instance pens, fountain'pens' or the like, have a very good resistancy also against the influence of ink. This .resistancy may be enhanced even more if these pens are coated with precious metals such as gold, rhodium, other metals of platinum group or alloys, of these precious metals. I

According to our invention the above described alloys do not only avoid the noxious 1 influences of the corrosion of tension but possess even an increased protection against external chemical influences owing to the superficial coating with the above mentioned precious metals. All formed pieces, such as pens, foun- 1 tain pens. or the like which are made in such a way aredistinguished by special durability and resistancy.

What we claim is:

1. Formed pieces made from an alloy containing 20-60% palladium, 0-20% copper, 040% of ametal from the group consisting of nickel, zinc, iron, cobalt, tin and cadmium, 0- 20% platinum, and the remainder substantially all silver.

' 2. Formed piecesmade of an alloy containing 35% palladium, 5% platinum, 10% copper, 0.5% nickel, and 49.5% silver.

3. Formed pieces according to claim 1 having thereon a. coating of a precious metal ofthe group consisting of gold, platinum, and rhodium.

4. Formed pieces according to claim 1, having a coating thereon of an alloy of a metal of the group consisting of gold, platinum and rhodium.;

5. A pen made of an alloy containing 20-60% palladium, 0-20% copper, 0-10% of a metal from the group consisting of nickel, zinc, iron, cobalt, tin and cadmium, 0-20% platinum, and the remainder substantially all silver.

6. A pen made of an alloy containing 35% palladium, 5% platinum, 10% copper, 0.5% nickel, 40

and 49.5% silver.

7. A pen according to claim 5, having thereon a coating of a precious metal ofthe group consisting of gold, platinum, andrhodium.

' 8. A pen according to claim 5, having thereon a. coating of an alloy of a. metal of the group consisting of gold, platinum and rhodium.

' JAKOB SPANNER.

JOSEF LEUSER.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3226309 *Jan 10, 1962Dec 28, 1965Leesona CorpMethod of electro-deposition of a palladium-silver alloy
US3310718 *Apr 7, 1964Mar 21, 1967Nytronics IncImpedance element with alloy connector
US3413115 *Jan 20, 1966Nov 26, 1968James E. WebbBrazing alloy
US3907556 *Feb 9, 1973Sep 23, 1975Haas CarlAlloys for tension bands
US3929474 *Aug 5, 1974Dec 30, 1975Williams Gold Refining CoTarnish resistant silver based dental casting alloy capable of bonding to porcelain
US3929475 *Aug 5, 1974Dec 30, 1975Williams Gold Refining CoTarnish resistant silver based dental casting alloy having superior improved ductility and work hardening characteristics
US4396578 *Jan 27, 1982Aug 2, 1983Bales Randy LWhite gold jewelry alloy
US4400350 *Sep 29, 1982Aug 23, 1983W. C. Heraeus GmbhPalladium dental alloy
US5484569 *Aug 12, 1994Jan 16, 1996The J. M. Ney CompanySilver palladium alloy
US5833774 *Apr 10, 1997Nov 10, 1998The J. M. Ney CompanyHigh strength silver palladium alloy
DE102009022357A1 *May 18, 2009Nov 25, 2010Heimerle + Meule GmbhPalladium-Schmucklegierung
WO1996005330A1 *Jul 31, 1995Feb 22, 1996Ney Co J MSilver palladium alloy
Classifications
U.S. Classification15/446, 420/587, 420/464, 420/503
International ClassificationC22C5/04, C22C5/00, C22C5/06
Cooperative ClassificationC22C5/04, C22C5/06
European ClassificationC22C5/06, C22C5/04