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the book:


Yost 4

First year of production:
Yost Writing Machine Company , Bridgeport , USA
Serial nr:

The Yost 4 is almost identical to the Yost 1 that had appeared eight years earlier. The most noticeable difference between the Yost 1 and 4 is the fact that the 4 has two supports on the back of the machine, holding up the buttress. Also, the corners of the frame are slightly rounder.

The Yost 4 was in fact the first Yost typewriter to be clearly marked with a model number. The Yost 1 was an unmarked machine, except for two coin-sized medallions on the back of the frame. Consecutive models were marked as the New Yost and New Yost 1, after which the Yost 4 appeared. Models 5-8 were the same as the Yost 4, with different carriage widths.

This picture shows the slightly bulkiers appearance of the Yost 4 on the left, compared to the Yost 1 on the right. For more information on the Yost, and for an animation of the grasshopper mechanism, check the article on the Yost 1. 

Courtesy of: Costa collection