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Enz 153 SC

 

Enz 153 SCEnz 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 platebase 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 traingear 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 trainside 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.

balancebalance

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

leverlever

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 sideEnz 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

ManufacturerEnz
Caliber153 SC
Number of jewels17
EscapementAnchor with pallets
BalanceNickel
Shock protection(s)KIF Protechoc
Balance cock directioncounterclockwise
Hairspring studfixed
Regulator typeHairspring key
Movement constructionFork
Escapement wheel, Fourth wheel
Third wheel, Mainspring barrel
Construction typepillar construction
Winding mechanismyoke
Setting lever spring0 holes
FeaturesSCI
FunctionsHour, minute, second
Beats per hour18000
Size101/2''' (measured: 23,3 mm)
Image in Flume Werksucher 1957 39
Inventory ID 17014
Enz 153 SCEnzEnz153 SC10 1/2'''Enz 153 SC17 Jewels, 10 1/2''', 18000 A/h, SCI
Factsheet

 



 

This movement was donated by Rolf-Jürgen. Thank you very much for your support of the movement archive!