Abstract: To properly clean one's hands, soap may be used in combination with water. However, soap is not always at hand and therefor one might want to carry around soap in a bag or purse. A soap dispenser is provided which allows a user to scrape scrapings of soap of a piece of soap while holding the dispenser in one hand. With the other hand, part of the dispenser may be rotated which causes the scrapings to be scraped of the piece of soap. This process may be performed before wetting the hands, and thus prevent contact between the piece of soap and water. Furthermore, the dispenser substantially encloses the piece of soap and therewith prevents contact between the soap and water, dirt, and other contaminating factors. The dispenser may be closed during transportation to prevent soap ending up in the bag or purse in which the dispenser is carried around.

Abstract: Time division multiplex telecommunication exchange in which each bit group received is compared, in the incoming line circuits, with the preceding bit group. When two successive bit groups are equal, the second group is not supplied to the switching device which serves for the exchange of data between the connected transmission lines. The outgoing line circuits retransmit the bit group when no new bit group is received from the switching device within a predetermined time.