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Home » IBM » Model A Executive » 1951 #20142
1951 IBM Model A Executive Serial # 20142 1951 IBM Model A Executive typewriter, Serial # 20142 Erik Bruchez's 1951 IBM Model A Executive typewriter. 2019-11-07 From the Virtual Typewriter Collection of Erik Bruchez: 1951 IBM Model A Executive Serial # 20142 This appears to be the first IBM Model A Executive on TWDB! It is in need of some TLC. The "Executive" models were the proportional ones, where each letter would take a number of "units": the "." would be one unit, for example, and the "W" might be 4 or 5. Those machines cost a lot in the days, perhaps around $5,000 in 2019 US dollars.

IBM went on to produce models B, C and D, in the end concurrently with the Selectric. Prior to the A, you had the Model 01 Executive as well, which was built on top of the Electromatic frame.

All these machines (but not the Selectric) are based on the invention of the "power roller", patented by J. F. Smathers in 1913 already. The history of how this was eventually brought to market and made a success is pretty neat.

The machine works to some extent: it types but skips, and the carriage return works but the clutch has issues. The seller was kind enough to provide an IBM Model B to go along with it for parts, including a better power roller.

1951 IBM Model A Executive #20142

Status: My Collection
Created: 11-06-2019 at 10:26AM
Last Edit: 11-07-2019 at 10:21AM


Description:

This appears to be the first IBM Model A Executive on TWDB! It is in need of some TLC. The "Executive" models were the proportional ones, where each letter would take a number of "units": the "." would be one unit, for example, and the "W" might be 4 or 5. Those machines cost a lot in the days, perhaps around $5,000 in 2019 US dollars.

IBM went on to produce models B, C and D, in the end concurrently with the Selectric. Prior to the A, you had the Model 01 Executive as well, which was built on top of the Electromatic frame.

All these machines (but not the Selectric) are based on the invention of the "power roller", patented by J. F. Smathers in 1913 already. The history of how this was eventually brought to market and made a success is pretty neat.

The machine works to some extent: it types but skips, and the carriage return works but the clutch has issues. The seller was kind enough to provide an IBM Model B to go along with it for parts, including a better power roller.

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Hunter: Erik Bruchez (ebruchez)

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

Status: Typewriter Hunter
Points: 4341

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 1970s. As of April 2019, I have more big standard (desktop) typewriters than portables, and a few standard electrics.



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