Optical or acoustic indicator for use in restaurants etc. - switch operated lamp or bell on table stand is used to attract service personnel

摘要

An indicating devide that generates either acoustic or light signals is intended for use in restaurants etc., to attract the attention of service personnel. Typically an electric light bulb (2) is located in a holder (3) mounted on top of a stand (4). The stand is inset in a circular base (5) and an on/off switch (6). The bulb may be powered either from the mains or from a battery located in the base. Additional circuitry may be included to provide flashing operation when the switch is operated. An alternative version substitutes an acoustic device in the form of an electric bell. The unit is intended to be used located on a table.