USRE20673E - Wire ob strip tinning machine - Google Patents

Description

y Re. ZQ,673

C. W. M EYERS WIRE OR STRIP TINNING MACHINE TELLI original Filed sept. ,27, 1954 March 15, 1938.

seemed Mar. A1s, 193s UNITED STATES PATENT! OFI-ics WIRE B. STRIP TINNING MACHINE Charles W. Meyers, Cleveland, Ohio Original No. 2,079,867, dated May 11, 1937,-'Serial No. 745,826, September 27, 1934. Application for reissue November 17, 1937, Serial No. 175,163

4Claims.

This invention relates to wire or strip tinning machines, one of the objects being to apply a smooth, even coating of tin to continuously moving wire or strip, Other objects may be inferred.

The accompanying drawing shows a crossthat extends almost to the bottom of the pot,

and by an elevation I"l in the bottom of the pot.

'I'he continuously moving wire `or strip runs over a roller I down through the molten tin 2 and into the chamber ib by way of the space between the partition I' and elevation Id where it is guided upwardly by a larger roller 5 through the palm oil 3 and so from the pot.

A pump 6 is submerged in the palm oil 3 in the chamber IIh and is driven through a long shaft l by a motor l. This pump supplies a set of nozzles 9 with a constant flow of palm oil,

(and these nozzles direct this now against the wire or strip moving upwardly through the palm oil, in a direction opposite to itsA movement.

This flow of palm oil wipes the wire strip so as to remove surplus tin.

This wiping cannot be done too close to the surface of the' molten tin 2 in the chamber IlI because it would cause too much disturbance. of the tin. If it is located sufilciently high in the palm.oil to avoid this trouble, the tin coating on the strip of wire has become too hardened to be so wiped.

In the machine described, the nozzles 9 are located at a suilicient height in the palm oil above the molten tin to prevent any disturbance of the latter. To enable 'proper wiping action, a

0 high frequency electric induction heater ill is immersed in the palm oil between the nozzles 9 and the surface of the tin 2, the wire or strip being` passed through this heater after leaving the tin. This raisesv the temperature of the wire or strip enough to renderl the tin carried by it sumciently fluid to permit it to be wiped by the ilow of palm oil directed against it by the nozzles 9.

V.The drawing illustrates the heater I0 as being vs, coil through which thewire or strip passes, guides il functioning to lead the wire strip initially through this coil.' The use of an element which heats by induction, is important because it permits` the addition of heat to the wire or 3 strip. without materially raising the temperature "-of, the palm oil or harming the tin coating.

In case the wire or strip is to be heavily coated (c1. sil-12.2)

that the heater is immersed in the palm oil above the surface of the tin. Bhould an attempt be made to heat thewire 'after it has left the palm oil it would be impossible'to procure the smooth and even coating desired.

I claim:

1. A wire or strip tinning machine' including the lcombination of means for holding molten tin with palm oil floating thereon, means for guiding continuously .moving wire or strip through said molten tin and upwardly through saidv palm oil, and means for heating said wire or strip after it has left said molten tin and while it is still in said palm oil, the last named means being an electric induction heater immersed in, said palm oil above said molten tin and capable of raising the temperature of said wire orstrip without materially raising the temperature ofI said palm oil .or harming the tin coating on said wire or strip.

2. A wire or strip tixining machine including the combination of means for holding molten tin with palm oil oating-l thereon, 'means forguiding continuously moving wire or strip through saidmolten tin and upw'ardly through said palm oil, means for wiping said wire or strip with a ow of palm oil after it has left said molten tin and atsuch a' height as to avoid material disturbance of the latter, and means for heating 3 said wire or strip after it has left said molten tin and before it is-.wiped by the thirdv named means.

3. A wire or strip tinning machine including the combination of means for holding molten tin with palm oil floating thereon, means for guiding continuously moving wire or strip through said molten tin and upwardly through said palm oil, means for wiping said wire or stripVwithra ilow of said palm oil after it has'lei't said molten tin and at such a height as to avoid material disturbance ofthe latter, and'means for heating said wire or strip after it has left said molten tin and before it-is wiped by the third named means, the last named means being an electric induction heater immersed in -said palm oil between the third named means and saidmolten tin.

-4. A wire or strip mining machine inducing and vmeans for heating said wire or strip while itv r is still in said palm oil, the last named. means being an electric inductionheater immersedin said palm oil and capable of= raising 'thetemperature of ,said wire or strip without materially raising the temperature of said palm oil or harming the tin coating on said wire orstrip.

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