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Westclox Four Inch Movement Balance Variations

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The construction of the balance (the timekeeping element) was changed several times.

Balance 0: Round cross section brass 2 arms:

The brass rim has a round cross section. Two flat brass arms. Brass safety roller. Examples seen from ca. 1887 - 1888.

Balance 1a: Lead rim with safety roller:

Lead over brass rim, three brass arms, cast lead alloy hub. BRASS SAFETY ROLLER.

Balance 1b: Lead rim with notched balance staff:

Lead over brass rim, three brass arms, cast lead alloy hub. NOTCHED BALANCE STAFF for safety action (no safety roller).

Balance 2: Brass 2 arms thick rim:

Brass balance with two arms. The rim is thicker than the arms. The staff is notched for the safety action.

Balance 3: Brass 3 arms:

Three arm flat balance. The staff is notched for the safety action.
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