Hipp Pendulum Clock

Hello there

I think you will find what you want here It dates back to 1948 and is by artificer.

Hope it is what you want

Regards

Dick

Hello again Steve

I only found half of it but here is the whole thing

Dick

Edited By Richard Parsons on 05/03/2011 15:07:32

Edited By Richard Parsons on 05/03/2011 15:16:51

There is another form of the Hipp escapement. This gives an impulse to the pendulum when the amplitude of its swing has died down to below a set limit. The ‘scape wheel is cut with both a primary and a secondary cuts. The primary cut is the normal cut for a Hipp pull escapement. Close to it is a secondary cut which is on a smaller diameter than the first (primary cut). As the pendulum amplitude dies down the escapement fails to hook in to the primary cut, so it falls into the secondary cut and rotates the wheel a little less BUT by lowering the ‘hook arm’ it closes the circuit to the Power Magnet which then boosts the now disengaged free swinging pendulum. The advantage of this is that the impulse is given to the pendulum when the pendulum is disengaged. It has at least half a beat to re stabilise. As the hook arm runs forward for another pull on the ‘scape wheel, it lifts and opens the magnet circuit.

The advantage of the GPO type Hipp trigger is that it is easier to adjust. The GPO clocks were fitted with a ‘de-bounce’ system which stopped the clock from getting into a ‘bounce’ situation.

Magnets for Hipps have to be made of metals which demagnetise easily. Old transformer cores are probably the only source of this stuff.