Adjustable suspension fork

Details Adjustable suspension fork Adjustable suspension fork

1994-12-08

1996-07-09

Roskoski, Bernard

Horology: time measuring systems or devices

Oscillating or reciprocating means

Pendulum type

G04B 1702

Patent

active

055351786

ABSTRACT:
A suspension fork for a 400-day anniversary clock is disclosed. The suspension fork includes a main fork and a tuning fork interconnected by an adjustment mechanism to permit easy and precise adjustment of the beat of the clock. The main fork includes a proximal end that is connected to a suspension spring which supports a torsion pendulum. The main fork further includes arms which are connected together at the proximal end and are spread apart at a distal end. The adjustment mechanism connects to the main fork at its distal end. A tuning fork is connected to the adjustment mechanism and is arranged so that its tines surround and interact with an anchor pin associated with the escapement of the clock. Operation of the adjustment mechanism causes the tuning fork to move relative to the main fork for precise adjustment of the beat.

REFERENCES:
patent: 768913 (1904-08-01), Sims
patent: 2625787 (1953-01-01), Reiner
patent: 4020624 (1977-05-01), Steinle et al.
patent: 4544282 (1985-10-01), Giradez
Terwilliger, C. 400-Day Clock Repair Guide, The Horolovar Company, St. Clair Shores, Missouri (1991) (41 pages).

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