HPP 125

 
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HPP 125

Description

Jenzi & Pfaff from Pforzheim in Germany producted until the 1960ies in rather low quantities wristwatches, branded as “Hercules” and movements. The second caliber family after WW II contained the calibers 102, 103, 125 and 126 and was already 1957 superseded. The HPP 125 has got an indirectly driven center second and a shock protection.

base plate

base plate

With a diameter of 13 lignes, the HPP 125 was virtually hige, and in conjunctin with ruby bearings (everywhere, except for the minute wheel) and a large screw balance, it was capable of delivering good precision rates.

gear train

gear train

The gear train is a true classical one, with fourth wheel at “6”, third wheel, acting as transmission wheel for the indirect center second, and directly driven minute wheel.

side view of the gear train

side view of the gear train

Of course, this movement works with the usual slow 18000 A/h. It uses a swiss type pallet lever.

"Shockproof"-shock protection, balance cock

"Shockproof"-shock protection, balance cock

"Shockproof"-shock protection, dial side

"Shockproof"-shock protection, dial side

The large screw balance with its waisted legs is beared in two inhouse “Shockproof” bearings, which only protect against axial hits. It does not protect agains lateral shows, since only the cap jewels are resiliently mounted.

detail: screw

detail: screw

An interesting detail are the extremely massive screws. No other movement uses such strong screw heads. A true “Hercules” thing.

HPP 125 dial side

HPP 125 dial side

On the dial side, the case caliber numer, 102, is used. Interestingly, HPP marks it as “HP” here.

Besides the cap jewel spring for the balance shock protection, you can see the yoke winding system and the lateral screws for securing the dial. This advanced construction perfectly secures the dial without putting bending force onto it.

At “6 o clock”, you see the fourth wheel bearing, if it was the caliber 102, the axle would be longer to carry the decentral second hand.

In the lab

The specimen shown here came resinified into the lab and got a full service.

Afterwards, it performed very well again in horizontal positions with an amplitude of 268°. In the vertical positions, it decreased to 150°, a sign, that the balance axle more or less reached its end of life. Additionally, the dirt and magentizm of the hairspring could not be fully removed, so that from time to time, the movement speeded up to 3 minutes per day, which went away after a short time again.

Nevertheless, for 65 year old and heavily used (according to the case) movement, a very fair result.


Technical data

Manufacturer:HPP
Caliber:125
Number of jewels:16
Escapement:Pallet lever
Balance types: screw balance
Shock protection(s): Shockproof (Henzi & Pfaff)
Balance bearing / direction hairspring:Clockwise
Moveable stud:no
Adjust mechanism:Long regulator arm
Construction:
  • lever
  • escape wheel, seconds wheel, third wheel, center minute wheel
  • center second pinion
  • mainspring barrel
Construction type:solid construction
Winding mechanism:yoke winding system
Setting lever spring:4 hole(s)
Features:SCI
Functions:hour, minute, second
A/h:18000
Size:13''' (measured: 28,55mm)
Literature: Flume: 1952 16
Inventory number:15017

Usage gallery

Hercules gents watch  (second hand missing)

Hercules gents watch (second hand missing)

This movement and watch is a donation from Erwin. Thank you very much!

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