Search found 104 matches

by AdminCR
Thu Nov 23, 2017 4:33 pm
Forum: Clock conservation
Topic: When to replace a mainspring?
Replies: 5
Views: 7696

Re: When to replace a mainspring?

Because the clock is no longer running the full period (typically 8 days).
by AdminCR
Fri Jun 23, 2017 4:47 pm
Forum: Tips and tricks
Topic: Suspension spring
Replies: 0
Views: 3942

Suspension spring

It is crucial for a clock to run to have the appropriate stiffness in its suspension spring. Too thick strips in the suspension spring means the suspension is too stiff and therefore the clock won’t run. Too thin is perhaps not so much of a problem as long as it holds the pendulum without breaking. ...
by AdminCR
Thu Jan 05, 2017 2:51 pm
Forum: Clock history
Topic: Graham, Shelton, Mudge, Dutton
Replies: 0
Views: 4016

Graham, Shelton, Mudge, Dutton

George Graham learned clockmaking from Henry Aske in 1688. Graham lived from 1673-1751. Shelton was apprenticed to Graham. Shelton is famous for his regulators. Thomas Mudge was apprenticed to Shelton. Mudge lived from 1715-1794. Mudge invented the lever escapement in 1757. Mudge entered into partne...
by AdminCR
Thu Jan 05, 2017 2:47 pm
Forum: Clock history
Topic: verge conversion
Replies: 0
Views: 3808

verge conversion

When verge escapements were converted into anchor escapements often the repeat work was taken away, because the anchor sat in the way.
by AdminCR
Thu Jan 05, 2017 2:41 pm
Forum: Clock history
Topic: Turkish market clocks
Replies: 0
Views: 3864

Turkish market clocks

Turkish market clocks appear around 1770.
by AdminCR
Thu Jan 05, 2017 2:40 pm
Forum: Clock history
Topic: inverted bell tops
Replies: 0
Views: 3715

inverted bell tops

Inverted bell tops were no longer used from 1740.
by AdminCR
Thu Jan 05, 2017 2:40 pm
Forum: Clock history
Topic: Edward East
Replies: 0
Views: 3715

Edward East

Edward East (1602-1696) was Henry Jones’s master.
by AdminCR
Thu Jan 05, 2017 2:38 pm
Forum: Tips and tricks
Topic: Fixodrop
Replies: 0
Views: 3593

Fixodrop

Purpose of Fixodrop: to create a bedding for oil. It is an anti-spreading agent. It has a very low surface tension and thus holds oil in its place.
The main problem in an escapement is the evaporation of oil.
by AdminCR
Thu Jan 05, 2017 2:37 pm
Forum: Clock conservation
Topic: minute markings
Replies: 0
Views: 3249

minute markings

If there are no minute markings on a dial, yet there are two hands, then the clock has been converted from just an hour hand to hour and minute hand.
by AdminCR
Thu Jan 05, 2017 2:35 pm
Forum: Clock conservation
Topic: five-spoke wheels
Replies: 0
Views: 3114

five-spoke wheels

Five-spoke wheels are typical for American clocks.