Portable electric sign for use in parades

Abstract

Abstract A PORTABLE ELECTRIC SIGN INCORPORATES A RECTANGULAR ARRAY OF MINIATURE ELECTRIC LIGHT BULBS SELECTED ONES OF WHICH MAY BE ENERGIZED TO DEFINE A DESIRED SYMBOL. THE STRUCTURE IS BATTERY OPERATED AND SEVERAL SUCH SIGNS OF IDENTICAL CONSTRUCTION MAY BE READILY CARRIED BY A NUMBER OF PERSONS IN A PARADE SO THAT BY STANDING IN SIDE-BY-SIDE FORMATION, WORDS OR SENTENCES MAY BE SPELLED OUT OR DISPLAYED BY THE SEVERAL SIGNS, EACH ONE EXHIBITING A GIVEN LETTER OR SYMBOL. TO ENABLE CHANGING OF THE SYMBOL, A SWITCH MEANS IN THE FORM OF A ROTATABLE DRUM IS MOUNTED TO THE REAR OF THE BOARD ON WHICH THE RECTANGULAR ARRAY OF LIGHTS ARE FIXED. THIS DRUM INCLUDES OPENINGS DEFINING ROW MEANS ARRANGED TO BE JUXTAPOSED A ROW OF FIXED SPRING CONTACTS CONNECTED TO FIRST CONTACTS OF THE LIGHT BULBS. SECOND CONTACTS OF THE LIGHT BULBS IN TURN CONNECT TO ONE TERMINAL OF THE BATTERY AND THE ROTATABLE DRUM CONNECTS TO THE OTHER TERMINAL. SELECTED ONES OF THE HOLES MAY HAVE SCREWS INSERTED THEREIN SUCH THAT THESE SCREWS ONLY WILL ENGAGE SELECTED SPRING CONTACTS TO EFFECT AN ENERGIZATION OF SELECTED LIGHTS IN THE ARRAY.

Inventors

• 👤 George Richard Hackett

Bibliographic Details