Pendulum and escapement anchor relationship indicator and setter

Abstract

As a guide for setting the relationship between the pendulum and escapement anchor of a clock, the pendulum can be aligned with a pendulum index. A crank stem has one end clamped to the anchor shaft and its other end is offset rearward for projection of its tip radially outward from the clock face for registration with an anchor index. The stem tip is accessible to serve as a handle for turning the anchor shaft relative to the pendulum arm to set the pendulum and anchor in the proper relationship to regulate the escapement for even operation.

I claim: 
     
       1. Clock escapement mechanism comprising a frame, an escape wheel, shaft means mounting said escape wheel and journaled in said frame for rotation about an axis fixed relative to said frame, anchor means including an anchor and an anchor shaft carrying said anchor and journaled in said frame for rotation about an axis stationary with respect to said frame .[.and fixed relative to said escape wheel axis.]., a pendulum connector frictionally mounted on said anchor shaft and angularly adjustable relative to said .Iadd.anchor .Iaddend.shaft, an indicator arm projecting from and fixedly secured to said anchor shaft, and index means cooperating with said indicator arm for indicating the angular position of said pendulum connector relative to said anchor shaft. 
     
     
       2. The mechanism defined in claim 1, and clamping means attaching the indicating means to the anchor shaft. 
     
     
       3. The mechanism defined in claim 2, in which the clamping means includes a notch engageable with the anchor. 
     
     
       4. The mechanism defined in claim 3, in which the notch is undercut for snap connection of the indicator arm to the anchor. 
     
     
       5. The mechanism defined in claim 1, in which the indicator arm has a notch for receiving the anchored shaft therein and a second notch engageable with the anchor to hold the arm against swinging relative to the anchor shaft about the axis of the anchor shaft. 
     
     
       6. The mechansim defined in claim 4, in which the indicator arm is a cranked stem having one end portion connected to the anchor shaft and its other end portion projecting transversely of the anchor shaft and offset longitudinally of the anchor shaft from said end portion connected to the anchor shaft. 
     
     
       7. The mechanism defined in claim 1, in which the indicator arm has crossed notches in its base opening endwise of the arm for engagement with the anchor shaft and the anchor, respectively. 
     
     
       8. The mechanism defined in claim 7, in which the width of the notch opening for receiving the anchor is less than the width of the anchor. .Iadd. 9. Clock escapement mechanism comprising a frame, an escape wheel, a shaft mounting said escape wheel and journaled in said frame for rotation about an axis fixed relative to said frame, anchor means including an anchor and an anchor shaft carrying said anchor and journaled in said frame for rotation about an axis stationary with respect to said frame, pendulum connector means mounted on said anchor shaft, angularly adjustable relative to said anchor shaft and held in any angularly adjusted position relative to said anchor shaft only by friction, an indicator fixedly carried by and projecting from one of said means, and an index for indicating the position of the other of said means and cooperating with said indicator to show the angular relationship between said pendulum connector means and said anchor means existing at any particular time..Iaddend.