Christian Lange's Gravity Escapement

LANGE'S GRAVITY ESCAPEMENT
I have known from many year' experience that a simple and safe gravity escapement, suitable both for small and large clocks, would be welcome to many, and I have, in order to satisfy this want, some years ago, constructed a gravity escapement, and applied it to a regulator, which has been going all the time, under my daily observation, to my entire satisfaction, and observation, to my entire satisfaction, and have found it equally good for church clocks. I have taken a patent for the new escapement, of which I append a description.
The main feature of my Invention is that the movement for the escapement and for the pendulum impulse movement is derived from mechanism independent of the force or power which impels the clock.
According to the usual mode of constructing escapement and pendulum impulse movements, the escapement consists of two pallets, which alternately fall into the escapement wheel, and the spindle of the pallets is connected to the pendulum, giving the impulse thereto.
Now according to one mode of carrying out my Invention, and as shown in front elevation at Fig. 1 and in side view at Fig. 2, I Dispense with on of the pallets, and on the pallet spindle a I fix a lever or arm A, which is weighted to the proper weight for giving the impulse to the pendulum B during part or the whole of ome of its oscillations. This impulse lever or the pendulum, or both, as here shown, have projections or points of contact, which in this case consist of a screw C and stop C1. On the pallet wheel spindle or staff g I fix a wheel G, which gears into a pinion F on a spindle which carries a fly stop or rest D, by preference balanced. The gearing is so arranged that the fly stop or rest D comes in contact with one of two stops E on the pendulum B, as here shown, or on parts connected thereto every time the pendulum makes an oscillation in on direction. - THE HOROLOGICAL JOURNAL, 1875

[@philabernethy1866]

Nice work Ken.

[@joergjoerg9520]

Bad idea. The big advantage of a gravity escapement is the detachment between pendulum and escapement / clockwork. Another equal important point is that the gravity escapement avoids any sliding friction between pendulum and escapement. In your approach, a new source of friction is added to the pendulum. And this friction depends on the force (changing) of the clockwork and it influences the pendulum over a very large portion of the vibration. This makes this approach worse than classic dead beat escapements.

[@donaldasayers]

All gravity escapements suffer from the faults you describe.