US726932A - Process of manufacturing bronze-powder. - Google Patents

Description

' No. 726,932. PATBNTED MAY 5, 1903. \K.HUTH. PROCESS OF MANUFACTURING BRONZE POWDER.

APPLICIATION FILED MAY 15, 1902.

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WITNESSES."

Aha/mars NITED STATES Tatented May 5, 1903.

PATENT OFFICE.

KARL HUTH, OF BARNSDORF, GERMANY, ASSIGNOR TO BRONZEFARBEN WERKE AKTIENGESELLSOHAFT VORMALS CARL SCHLENK, OF ROTH, NEAR NUREMBERG, BAVARIA, GERMANY.

PROCESS OF MANUFACTURING BRONZE-POWDER.

SPECIFICATION forming part of Letters Patent No. 726,932, dated May 5, 1903.

' Application filed May 15, 1902. Serial No. 107.515. (No specimens-l turing Bronze-Powder, of which the following is a full, clear, and exact specification.

In the manufacture ofbronze-powdervarious attempts have been made toovercome the long, expensive, and by no means easy V to process of preparing metals, especially of alloying metals with ingot metals, to obtain the product for the stamping operation. Metallic grains forming a more or less fine powder, as also the waste materials from other I5 industries, do not admit of satisfactory stamping to a bronze-powder at once bright, pliable, and soft, nor do they yield sufficient material, especially in the case of alloys containing a higher percentage of zinc. This end is attained in the present invention by- ,preparing a product sufficiently thin and soft to make the stamping uniform throughout the operation. By properly pouring out the metals or metallic alloys thin and very soft and pliable products are produced having the form of bands, lamellze, or films.

In carrying out my new method I can proceed in various manners. In the first place it is possible to obtain products having the 0 form of bands, leaves, or films by pouring the liquid metal or alloy in a long stream onto a rotating hollow cylinder, preferably on the inner side. The material will form bands, the thickness of which can be regulated by the speed of the cylinder, and after cooling will peel oif of itself. After being cleansed in the usual manner this product is fed di rectly to the stamps and then converted gradually into the finest powder possessing superior brightness, pliability, and purity.

In the accompanying drawings, Figure 1 is a side elevation, partly in section; and Fig. 2 is a section on line 2 2 of Fig. 1 looking in the direction of the arrows.

The drawings show one-way of carrying 5' out my method, in which acylinder a is arranged to rotate horizontally,being connected'with a shaft, b, having thereon fast and loose pulleys c.

01 represents a ladle or cup on the end of a handle efor introducing the liquid metal into the interior of the revolving cylinder a.

The same result is obtainedby pouring out the liquid metal between rollers, which carry it forward and so convert it to fiat thin products. It always follows that the product, besides thinness, also obtains the requisite degree of softness, so that here the manner and rapidity of the cooling play a prominent part. Sudden chilling should be avoided. 6o I claim A '1. The process for the manufacture of bronzepowder consisting in bringing the liquid metal into contact with rotary means to form bands therefrom and then stamping the bands to a fine powder.

2. The process for. the manufacture of bronze-powder which consists in pouring out the liquid metal and by converting it to a product sufficiently thin and soft and having the. form of bands, and in properly cleansing such products and stamping them uniformly and converting them gradually to a fine bronze-powder of the brightness and pliabil= ity desired.

3. The.process which consists in pouring out the metals onto the surface of a rotating hollow cylinder, so that the metals are carried forward by the cylinder until the cooled bands peel 0E, and then stamping the bands to a fine powder.

In witness whereof I have hereunto set-my hand in presence of two witnesses.

*KA'RL :rIUT I-I.

Witnesses:

LEONHARD OTT, OSCAR BooK.

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