Skip to content

The Talking Machine Patent Archive

Patents you could hear

Browse Dates Inventors Types About

Tower bell keyboard

Patent drawing of a chime-ringing apparatus showing four bells mounted in a frame with hammers and dampers, a rotating shaft with friction pulleys and electro-magnets below, and a keyboard with battery cells connected by wires to operate each bell's hammer.

CHIME-RINGING MECHANISM.William C. Wilkins · March 13, 1894

United States patent drawings and specifications are works of the U.S. government and are in the public domain — they were never copyrighted. Download them, print them, frame them. Our commentary and descriptions are © 2026 The Talking Machine Patent Archive.

About · Terms · Privacy · Corrections welcome — this archive gets better when collectors write in.