Operational Guides
Grandmother/daughter Clocks
Summary:
Grandmother and granddaughter clocks share the same fundamental principles as full-size grandfather clocks but in smaller, more compact floor-standing cases. Their reduced height accommodates shorter pendulums while retaining classic longcase features, weight-driven or spring-driven movements, and traditional chime systems. These clocks are ideal for smaller rooms where a tall-case appearance is desired without the footprint of a full-sized grandfather clock.
Key Identifiers:
Reduced Case Height
Both retain the longcase silhouette, often with a bonnet-style top, slender trunk, and weighted base.
Grandmother clocks: Typically 5–6 feet tall
Granddaughter clocks: Usually 3–5 feet tall
Shorter Pendulum
Shorter pendulum rod and smaller bob compared to grandfather clocks
Swing amplitude and rate behave the same; pendulum length still controls timekeeping
Many granddaughter clocks use compact mechanical or quartz movements, but mechanical versions remain common
Weights or Spring-Driven Movement
Depending on design:
Grandmother clocks commonly use two- or three-weight movements similar to full tall-case clocks
Granddaughter clocks may use lightweight chain-driven movements or spring-wound key movements
Some modern variants feature a smaller floating balance escapement
Traditional Dial Features
Typical dial elements:
Chime selector or silence switch
Hour strike mechanism
Simple arch or moon dial (less common on smaller cases)
Second hand on many mechanical models
Operational Guide:
Placement & Leveling
Proper leveling ensures accurate timekeeping and reliable striking.
Place the clock against a firm wall.
Level side-to-side and front-to-back using shims as needed.
Confirm that the pendulum swings evenly without rubbing.
Step 1:
Installing the Pendulum
Hang the pendulum onto the suspension leader or crutch post.
Make sure it hangs freely and is not twisted.
Step 2:
Hanging the Weights (If Applicable)
For weight-driven models:
Identify the correct positions, often marked L – C – R
Ensure chains or cables are seated correctly on sprockets or pulleys
Raise weights gently to avoid misalignment
Granddaughter clocks may use lighter-weight shells, so handle carefully
Step 3:
Starting the Clock
Give the pendulum a gentle push to one side and release.
Listen for an even tick-tock rhythm.
If uneven, adjust by slightly bending the pendulum crutch in the back to shift the pendulum left or right until the beat becomes balanced. Modern movements typically have an auto-beat verge.
Step 4:
Setting the Time
Move the minute hand only, and move it forward, pausing at each quarter-hour to let the chimes or strike complete.
Never force the hands backward unless the manufacturer specifically allows it.
Step 5:
Chime & Strike Operation
Many grandmother clocks include:
Westminster or bim-bam chimes
Quarter-hour melody sequences
Hour strike on a hammer-and-rod gong assembly
Granddaughter clocks often include a simplified movement with hour strike only or a compact chime module
Step 6:
Regulating the Speed
Adjust timekeeping using the pendulum bob:
Lower the bob to slow the clock.
Raise the bob to speed it up.
Make changes in small increments (1–2 turns) and allow 24 hours to observe results.
Step 7:
Depending on the movement
Chain-driven: Pull chains down evenly
Cable-driven: Use the winding crank on each arbor
Spring-wound: Insert the key and wind until resistance increases—do not force.
Step 8:
Routine Maintenance
Light dusting of the case and dial
Ensure chains/cables are free of twists
Have the movement professionally cleaned and oiled every 5–10 years
Avoid moving the clock with weights or pendulum attached