Kasper 750

 
Kasper 750

Kasper 750

Description

Probably in the late 1950ies, Kasper released their gents’ watch movement series with 10 12 lignes diameter, to which belonged besides the caliber 900 also the simpler constructed caliber 750, all with the same gear train.

base plate

base plate

The base place shows, that all important bearings, including that of the minute wheel are equipped with rubies. It also reveals, that the Kasper 750 is cost efficient pillar construction, which tries to hide that with the clever use of metal bridges, so that it looks massive.

minute wheel bridge

minute wheel bridge

When the large minute wheel bridge is mounted (put on), you see the pillar construction.

gear train

gear train

The Kasper 750 has got the usual gear train of the 1950ies: Mainspring barrel - center minute wheel - third wheel - fourth wheel - escapement wheel.

side view of the gear train

side view of the gear train

On the side view, you can see the pillar construction. It was much cheaper to produce, since less metal had to be shaved out in contrast to a massive movement.

The Kasper 750 is regulared by a screw balance, which is beared in two Monorex shock protections. It beats with the usual slow 18000 A/h and controls a classical pallet lever movement of swiss type.

Kasper 750: Dial side

Kasper 750: Dial side

Unlike the Kasper 900, the Kasper 750 has got its ratchet on the dial side, which is consits like on very cheap movements only of a simple spring.

A true speciality is the rocking bar winding system:

Detail: Rocking bar winding system

Detail: Rocking bar winding system

It does not consists of the typical rocking bar, below which three gears are located, but the two outer gears are shifted into their position with a tiny linkage, a significant increase in complexity compared with a standard rocking bar winding system.

Technical data

Manufacturer:Kasper
Caliber:750
Number of jewels:17
Escapement:Pallet lever
Balance types: Nickel screw balance
Shock protection(s): Monorex
Balance bearing / direction hairspring:Clockwise
Moveable stud:no
Adjust mechanism:Long regulator arm
Construction:
  • lever
  • escape wheel, seconds wheel, third wheel
  • center minute wheel
  • mainspring barrel
Construction type:pillar construction
Winding mechanism:rocking bar winding system
Setting lever spring:3 hole(s)
Features:SCD
Functions:hour, minute, second
A/h:18000
Size:10 1/2'''
Literature: Flume: 1957 36
Inventory number:17029

Usage gallery

Anker gents watch

Anker gents watch

Links