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EB 1553

EB 1553EB 1553

Description

The Ebauches Bettlach, which were notorious-famous in the 60ies and 70ies für their cheap and very simple constructed pin lever movements, made much better movements in their former times. Among these well made movements there's the caliber EB 1553 shown here, which was made around 1960.

The EB 1553 is a pin lever movement in the popular size of 10 1/2 lignes.

 base platebase plate

It's easy to see, that all bearings, even that of the minute wheel, are equipped with rubies. The escapement wheel has got two additional cap jewels, second wheel and lever one each. In total, this leads to the popular number of "17 jewels", which is perfect for advertising.

minute wheel and cockminute wheel and cock

The minute wheel is beared under an own cock and driven by the mainspring barrel. This was a contemporary construction, as well, as the rest of the gear train with directly driven center second.

gear traingear train

It's only the shape of the escapement wheel, which distiguishes this movement from a swiss pallet lever movement.

side view of the gear trainside view of the gear train

The balance with its imitated screws (which have no functional impact, but are beautiful) is beared in two KIF Protechoc bearings and beats contemporarily slow with 18000 A/h.

lookalike screw balancelookalike screw balance

You can see here, how the screw imitations were made, by cutting out lots of half circles from the balance ring. Lots of work for no functional impact. However, the lower side of the balance wheel looks a little more crude:

lower side of the balance wheellower side of the balance wheel

The cut out dots are the result of machine poising of the balance wheel, a process, which made screw balances obsolete in the 1960ies.

EB 1553 dial sideEB 1553 dial side

The dial side also looks very good. The rocking bar winding mechanism has got real springs and is really beautiful. Even the click mechanism consists not only of a simple spring, but has got a real ratchet.

The cap jewels give the impression of a costly movement, however the cap jewel of the lever axle (at 8 o'clock) is useless, since you never oil the lever axle bearing and hence need no cap jewel for retaining the oil here.

 

 Technical data

ManufacturerEB
Caliber1553
Number of jewels17
Escapementpin lever
BalanceNickel(s)
Shock protection(s)KIF Protechoc
Balance cock directionclockwise
Hairspring studfixed
Regulator typeLong regulator arm
Movement constructionFork
Escapement wheel, Fourth wheel, Third wheel
Center wheel
Mainspring barrel
Winding mechanismRocking bar
Setting lever spring3 holes
FeaturesSCD
FunctionsHour, minute, second
Beats per hour18000
Size101/2'''
Image in Flume Werksucher 1962 25
EB 1553EBEB155310 1/2''''''EB 155317 Jewels, 10 1/2'''''', 18000 A/h, SCD
Factsheet

 

 

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