Timex M24

 
Timex M24 | 17jewels.info - The Movement Archive

Timex M24

Description

Around 1963, the new Timex caliber M24 replaced the outdated Timex M22. It was a little bit larger and had a much more modern appearance.

It was probably made until the early 1980s, and in the 1970s, it was used in parallel with the at least function-wise similar calibers Timex M78 and Timex M100.

Fun fact, around 1963, the UMF, too, released their base caliber, with the number M24.

Timex M24: older version

older version

Older versions had fewer holes in the gear train bridge, compared to later ones.

Timex M24: later version

later version

An oddity of the Timex M24 is, that it is assembled head-over, meaning, the gear train bridge acts as base plate. It also contains the three pillars, which are screwed on the dial side.

Servicing this movement is possible, but it’s difficult and makes not much fun.

Timex M24: inside the gear train bridge

inside the gear train bridge

The gear train is special, with mainspring barrel, second wheel, third wheel, center seconds wheel and escape wheel and reminds a bit of a Roskopf movement.

The center seconds pinion is optionally prolonged for attaching the second hand.

On the dial side, the hands are driven by the mainspring barrel and a double cannon pinion, where the lower side is connected with the mainspring barrel, and the inner/upper side is mounted wth a slipping clutch.

Timex M24: gear train

gear train

The M24 uses a simple two-leg anular balance, whose hairspring is attached to the base plate at the dial side.

It beats with 18000 A/h and can be adjusted with a regulator arm.

Since Timex uses their V-Conic bearings with a massive balance staff, no further shock protection is required.

Timex M24: Timex M24: Dial side

Timex M24: Dial side

On the dial side, there’s the rocking bar winding system and a simple, but effective ratchet. The ratchet wheel is secured with a copper plate spring on the axle.

On position 6 o’clock, you see the balance screw, with which the height play of the balance staff is adjusted.

Technical data

Manufacturer:Timex
Caliber:M24
Caliber base:Timex M24
Size:9 1/4 x 11 1/4''' (measured: 21,1 x 25,1mm)
A/h:18000
Escapement:Pin lever
Balance types: Nickel anular balance
Shock protection(s): none
Balance bearing / direction hairspring:Bridge
Moveable stud:no
Adjust mechanism:Hairspring key
Construction:
  • lever, escape wheel, seconds wheel, third wheel, large driving wheel, mainspring barrel
Construction type:pillar construction
Winding mechanism:rocking bar winding system
Setting lever spring:4 hole(s)
Features:
  • SCD (direct center seconds) (optional)
Mentioning in literature (years): 1968
Inventory number:23002

Usage gallery

Timex M24: Timex ladies' watch model "Petite" 1010 (1963)

Timex ladies' watch model "Petite" 1010 (1963)

Timex M24: Timex gents watch model "Marlin" 2024 (1970)

Timex gents watch model "Marlin" 2024 (1970)

Timex M24: Timex gents watch model "Mercury" 16051 (1973)

Timex gents watch model "Mercury" 16051 (1973)

Timex M24: Timex skin diver model "Sprite" 23271 (1977)

Timex skin diver model "Sprite" 23271 (1977)

Timex M24: Timex skin diver model "Sprite" 23271 (1978)

Timex skin diver model "Sprite" 23271 (1978)

Timex M24: Timex gents watch modell "Marlin" 26070 (1971)

Timex gents watch modell "Marlin" 26070 (1971)

Timex M24: Timex gents watch model "Marlin" 26070 (1972)

Timex gents watch model "Marlin" 26070 (1972)

Links

The movement, together with three watches, is a kind donation from R.Ludwig to the movement archive. Thank you very much for your great support!