US2013005A - Dross skimmer - Google Patents

Description

Sept, 3, 1935. L. MUSCAT W DROSS SKIMMER Filed April 9, 1955 .IVENTOR.

ATTORNEY.

- N DSTATES rarer OFFICE" Patented Sept. 3, 1935 2,013,005 "DROSS SKIMLMER.

Lszanis;hamster-601cm, N. Y. assignojl" to American Metals Corporation, Brooklyn, Y.,

Thisinvention' relates to dross skimmers and contemplates the provision of a simple and inexpensive device, which can be efiiciently manipulated by unskilled persons, for removing the dross which accumulates on the surface of molten white metals such as lead, tin and the like when of the molten metal, and to resist slipping of the dross back into the molten metal.

My invention further contemplates the provii sion of a one-piece metal skimmer adapted, to fit the hand of the user and to be inexpensively manufactured and provided with means for retaining the dross thereon during the skimming operation.

skimmer as it appears in use during the Fig. 4 is a horizontal section, taken on the line- 4 -4 of Fig. 2 and showing, particularly, the

skimming blade.

Fig. 5 is a vertical section; taken on the line 5-5 of Fig. 4.

Fig. 6 is a horizontal section of the handle. In that practical embodiment of my invention which I have shown by way of example, the skim- ,mer, designated generally by the numeral it, is

preferably made of a single piece of flat sheet metal. Said skimmer comprises the skimming blade portion II, the cylindrical hollow handle l2, and the integral flat connecting portion l3 joining the blade to the handle. 7

It will be seen that my improved skimmer may readily be made'of a single length of sheet metal of uniform width. The connecting portion I3 is bent at a preferably obtuse angle to the blade I I,

being joined thereto by the integral bend l4 subtending an angle of approximately 90, and preferably terminating in a reversely curved portion [5 to maintain the connectingportion l3 at the proper angle to the blade.

To form the handle Ill, the sheet metal at one extremity of the skimmer is bent into cylindrical form to carry the respective edges l6 and I? thereof into contact, said edges being continuous with the corresponding edges 18 and IQ of the portion I3 and being joined thereto by the curved edges 28 and zi. suitable perforationas 22 W is made in the upper portion of the handle where by the skimmer may be hung up on a nail or other suitable supporting means for ready access by the user. Adjacent the edges l6 and I1 and at the rear of the handle Ill,.the adjacent portions 23 and 2 5 of the handle are preferably left flat and not rounded, for ease in manufacture.

The uppermost extremity of the handle is curved as at 25 and thereby cut away to permit the skimmer to be easily hung up upon a nail or the like without obstruction by the rear portion of the handle. The handle being hollow, it permits a free circulation of air therethrough to maintain the hand of the user cool when the blade becomes heated.

It will be understood that diihculties have been experienced by those unskilled in the art, in removing dross from molten metal, in that the dross tends to slip oi the blade of whatever type is used for skimming the dross, I have found that these difliculties may be obviated by roughening the upper surface 26 of the blade II.

The roughening may be accomplished in a great variety of different ways but as illustrated, said roughening consists of a series of closely spaced indents or depressions 21 made in the surface 26 and arranged close to each other. The indents may best be made by a pointed tool or die. An additional depression as 28 may be made in such surface, said depression being illustrated in the form of an initial or letter which may constitute a trade-mark or any desired designation, the bottom of said depression 28 being smooth and said depression being arranged preferably in the center of the blade.

It will be noted that by indenting the depressions 21, the material adjacent the indent is slightly raised as illustrated at 29, so that the dross passing over the slightly raised parts 29 em ters the depressions 2i and remains therein even though the skimmer be slightly tilted during the operation of lifting the dross from the surface of the molten metal.

It will be seen that I have provided a simple, V

to claim my invention as broadly as may be permitted by the state of the prior art and the scope of the appended claims.

I claim:

1. A dross skimmer of a single piece of sheet metal comprising a blade at one extremity of the skimmer, the upper surface of said blade being roughened and having comparatively small depressions and recessed portions thereon to retain the'clross' thereon during the use of the skimmer, a hollow cylindrical handle at the other end of the skimmer, and a fiat portion integrally connecting the handle and the blade and arranged at an obtuse angle to the blade.

2. A dross skimmer comprising a flat blade and a cylindrical handle, the upper surface of the blade having a multiplicity of depressions and slightly raised portions thereon to resist slipping of the dross off the blade when the skimmer is used to remove dross from the surface of molten metal.

3. In a dross skimmer, a rectangular skimming blade of thin metal, the upper face of said blade being roughened to resist the slipping of dross off the blade.

4. A dross skimmer of a single piece of sheet metal including a rectangular blade having a roughened upper surface.

5. A dross skimmer of a single piece of sheet metal including a rectangular blade having a roughened upper surface, said blade being arranged at one end of the skimmer and a hollow handle bent into substantially cylindrical form to provide an air space therethrough at the other end of the skimmer.

6. In a dross skimmer, a skimming blade having a roughened upper surface including indents formed by indenting the material at closely spaced intervals with a pointed tool and providing slightly raised portions on the surface adjacent the indents.

LAZARUS MUSCAT.

eemmcme 0F CORRECTION.

Patent Ne. 2,013,005. September 3, i935.

LAZARUS MUSGAT.

it is hereby eertiiied timt the name of the assignee in the above numbered patent was erreneousiy cieseriiied and seeeiiied as "American Metals Corporation" Whereas said name siieuid have been described and specified as United American Metais florpemtien, as shewn by the tecertis ei assignments in this office; and that the said Letters Patent Should be read with this correction therein that the same may eonierm to the record of the ease in the Patent (iiiice.

Signed ami eeeieei this 8th day 0? flcteiser, Am I). i935.

Leslie Frazer (See!) Acting Eommissiener 0f Patents

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