Apparatus for removing and replacing spiral springs in clock barrels
OwnerMarvin D. Schirmerinventor
Life of this patent
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Abstract
A support frame carries a rotary clock spring winding shaft having a reversible locking means. A set of variably sized spring retaining sleeves are provided and are selectively placed on the winding shaft according to the size of the clock spring barrel. A parallel stationary shaft on the support frame mounts a group of adjustable spring end holding elements which cooperate with the winding shaft during the winding up or unwinding of the clock spring. The apparatus effects removal and replacement of the clock spring in its barrel or retainer in a very simple manner without injuring the spring or the hands of the manipulator.
Claims11
Apparatus for removing clock springs from their mountings and for replacing the springs after servicing, said apparatus comprising a support body, a spring winding and unwinding rotary shaft journaled on the support, reversible locking means for said rotary shaft to lock the same against retrograde movement selectively in opposite directions, said rotary shaft having coupling means adapted for connection releasably with a clock spring arbor, at least one transfer sleeve having an end slot adapted for placement over the rotary shaft, a second shaft parallel to the rotary shaft on said support body and spaced laterally from the rotary shaft, and at least one clock spring end engaging and securing hook on said second shaft and shiftable axially and circumferentially thereon to selected positions of use.
Dependencies are inferred from the claim text.