Abstract: A ribbon cassette for typewriters is provided with an end-of-ribbon signaling device which takes the form of a switch comprising a contact web on a ribbon tensioning lever associated with the supply spool in the ribbon cassette and two contact pins provided in the machine. The contact web is adapted to bridge the contact pins signaling end of ribbon when the ribbon supply is used up.

Abstract: A hand-held pistol grip jacket holds an electric heater provided with a heat-absorbing core from which a threaded shaft projects outwardly beyond the jacket. One or more disc-like applicator assemblies are each provided with a metal mounting plate having a centrally located complementarily tapped recess for removably mounting the applicator assembly on the threaded shaft. Each applicator assembly comprises a doughnut-shaped permanent magnet anchored to the mounting plate. A smooth surfaced face plate covers the magnet and, with the aid of a finish plate, serves to engage the body of the subject being massaged.