AT132850B - Process for the production of wire-wound bodies, in particular for selenium cells or the like. - Google Patents

Description

  

   <Desc / Clms Page number 1>
 



  Process for the production of wire-wound bodies, in particular for selenium cells or the like.



   It is known that photoelectric cells, e.g. B. selenium cells are produced in such a way that the insulating body is provided with two wire windings isolated from one another and these windings are connected to one another through a selenium layer. It is also known that to make the selenium or such cells sensitive to higher temperatures. around 220 and above, must be brought.



   It has now been shown that the production of short-circuit-free windings of the above type causes difficulties, because short-circuits usually occur during the subsequent heat treatment due to thermal expansion of the winding. This difficulty is particularly evident when working with relatively thin wires, especially since the tension during winding due to the greater tearability of the wire means that the winding strength cannot be as high as is sometimes the case with thicker material.



   It has already been proposed to produce a short-circuit-proof winding in such a way that the winding is applied to a carrier consisting of two longitudinal halves and provided with holes lying one above the other. In order to prevent the winding from shifting during the subsequent heating when the selenium is applied, a lever-like movement of a mandrel that is inserted into the center holes of the two carrier halves is intended to shift the two carrier halves against each other, thereby compensating for the expansion of the wires should.



  In this type of production, however, special auxiliary devices and specially shaped support bodies are required, which prevent the general application of this process.



   According to the invention, these difficulties can be avoided if the winding of the insulating body is carried out at a higher temperature, u. at least at a temperature to which the cell is subsequently exposed. It does not matter in which way this temperature increase or heat supply takes place. It also makes no difference whether only the wire or, appropriately, the carrier body or both are heated at the same time.



   Any changes caused by the action of heat, e.g. B. oxidation, attraction of moisture, etc., are remedied by appropriate measures. So you can z. B. in indifferent gas atmospheres and with exclusion of moisture u. work.



   PATENT CLAIMS:
1. A process for the production of selenium-od wound with thin wires. Like. Cells with heating, characterized in that the wrapping is carried out at the temperature corresponding to the subsequent heat treatment (sensitization).

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

2. The method according to claim l, characterized in that the heat treatment to avoid harmful changes such as oxidation in an inert gas atmosphere u. the like. ** WARNING ** End of CLMS field may overlap beginning of DESC **.