Hammond Ravenswood Alarm

This is a classic Bakelite "Gothic Arch" style which looks like a Cathedral. This is a 'spin-to-start' clock. The name ‘spin-to-start’ reflects one of the characteristic of Hammond clocks, which need to be started by hand by spinning a small knob in the back. The name "Ravenswood” came after Chicago's Ravenswood Ave., site of the first Hammond Clock Co.
I like the following Hammond commercial, from May 1929: “…The mechanism in the Hammond clock counts the cycles per second entirely independent of the voltage…The Light Company accurately controls the number of cycles per second of the current so that any Hammond Clock operating on their lines will tell off U.S. Naval Observatory time. So accurately does the Light Company regulate the frequency that your Hammond Clock can never vary more than a few seconds…The current consumed by the clock costs but a few cents a month. If you live in or near a large city, in all probability this time service is available in your home…”