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1974 IBM Memory Typewriter Serial # 28-0105518 1974 IBM Memory Typewriter typewriter, Serial # 28-0105518 Erik Bruchez's 1974 IBM Memory Typewriter typewriter. 2024-03-28 From the Virtual Typewriter Collection of Erik Bruchez: 1974 IBM Memory Typewriter Serial # 28-0105518 I picked up this non-working machine for free so it doesn't get scrapped. There is not much information about this machine online, and it's the first Memory Typewriter entry on TWDB!

This machine is essentially a Selectric with the big addition of the ability to record characters both in an electronic memory and on a magnetic tape. There is an electronic board in the back, with IBM chips. It'd be interesting to have the schematics for that.

Currently, the machine turns on in the sense that one light turns on and the logic board fan turns on as well. However, the main motor doesn't turn on.

There is some damage to the top case: one part has broken off on the right side, and one is missing on the left side. The left knob is also missing. These parts don't appear to be necessary to the good working of the machine.

The inside of the machine is filthy. There is no immediately visible damage, however.

Tentatively setting a 1974 date. This was the year the IBM Memory Typewriter was announced (in March). The power supply has a marking indicating August 1974. Again, I realize that this is tentative.

UPDATE: Finally found the serial number!

1974 IBM Memory Typewriter #28-0105518

Status: My Collection
Hunter: Erik Bruchez (ebruchez)
Created: 01-30-2021 at 03:08PM
Last Edit: 03-28-2024 at 06:26PM

Description Hunter 47 Photos 1 Like  Find on Ebay #AD  Find on Etsy #AD

Description:

I picked up this non-working machine for free so it doesn't get scrapped. There is not much information about this machine online, and it's the first Memory Typewriter entry on TWDB!

This machine is essentially a Selectric with the big addition of the ability to record characters both in an electronic memory and on a magnetic tape. There is an electronic board in the back, with IBM chips. It'd be interesting to have the schematics for that.

Currently, the machine turns on in the sense that one light turns on and the logic board fan turns on as well. However, the main motor doesn't turn on.

There is some damage to the top case: one part has broken off on the right side, and one is missing on the left side. The left knob is also missing. These parts don't appear to be necessary to the good working of the machine.

The inside of the machine is filthy. There is no immediately visible damage, however.

Tentatively setting a 1974 date. This was the year the IBM Memory Typewriter was announced (in March). The power supply has a marking indicating August 1974. Again, I realize that this is tentative.

UPDATE: Finally found the serial number!

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Hunter: Erik Bruchez (ebruchez)

Erik Bruchez's Typewriter Galleries [ My Collection ] [ My Sightings ]

Status: Typewriter Hunter
Points: 10903

I started collecting my first pre-WW2 standard typewriters in 2017. Since then I have added a few machines to my collection, which now ranges from the 1890s to the 1980s. As of 2020, I have more big standard (desktop) typewriters than portables, and a few standard electrics.


RESEARCH NOTE: When researching the IBM Memory Typewriter on a computer with lots of screen real estate, you may find that launching the IBM Serial Number page and the IBM Memory Typewriter By Model/Year/Serial page in new browser windows can give you interesting perspectives on changes throughout the model series.

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