Enz 153 SC

 
Enz 153 SC

Enz 153 SC

Description

There’s not much to find about the Uhrenfabrik Enz in Pforzheim, Germany, with its owner Franz Schnurr, and so, the caliber Enz 153, shown here, is pretty rare, too.

Technically, this movement is a pallet lever movement, but the whole construction is like that of a Roskopf pin lever movement.

base plate

base plate

The Enz 153 SC is a pillar construction. If you count the number of bearings (all with jewels, except on the mainspring barrel), you recognise, that one bearing is missing, in comparison to a normal lever movement. The cause for that is, that we have a Roskopf construction here, which has got larger wheels and so needs one reduction step less. To achive the number of 17 jewels, the escapement wheel needs to have cap jewels on both sides.

gear train

gear train

The shock protected anular balance controls a pallet lever movement with an extra large (exceeding the center of the movement) mainspring barrel, second wheel, third wheel (which engages with its outer teeth into the outer teeth of the center second wheel) and escapement wheel. The odditiy of the escapement wheel is, that it’s construction is mirrored to a standard escapement wheel: The teeth go to the right, on normal escapement wheel, they go to the left. The reason is, that because of the missing transmission step, the escapement wheel turns counterclockwise.

side view of the gear train

side view of the gear train

The mainspring barrel of the Enz 153 SC is not covered on the top. As you can see, it goes over the flat, indirectly driven center second wheel, which is only single-side beared.

The ratchet is on top of the mainspring barrel bridge, which also carries the top bearing of the second wheel. It is a very simple construction, consisting of only one spring, which blocks the crown wheel.

balance

balance

The balance is simple and flat with an extra large plateau. Normally, you find this only in simple pin lever movements.

lever

lever

Not less odd is the lateral lever, which has got two jewelled pallets, but you can imagine having it with two pins instead in a pin lever movement.

Enz 153 SC dial side

Enz 153 SC dial side

It is noteable, that the Enz 153 SC has got a yoke winding system, but on the other hand, you find this also in equally simple pin lever movements, like those of Baumgartner.

Since we have a movement with a Roskopf construction, minute and hour wheel are both driven by a slipping clutch on top of the mainspring barrel. Simple but efficient.

Technical data

Manufacturer:Enz
Caliber:153 SC
Number of jewels:17
Escapement:Pallet lever
Balance types: Nickel anular balance
Shock protection(s): KIF Protechoc
Balance bearing / direction hairspring:Counterclockwise
Moveable stud:no
Adjust mechanism:Hairspring key
Construction:
  • lever
  • escape wheel, seconds wheel
  • third wheel, mainspring barrel
Construction type:pillar construction
Winding mechanism:yoke winding system
Features:SCI
Functions:hour, minute, second
A/h:18000
Size:10 1/2''' (measured: 23,3mm)
Literature: Flume: 1957 39
Inventory number:17014