1887 - 1892
Yost Writing Machine Co.
Bridgeport, Connecticut, US
Distinguishing the first three models of Yost typewriters can be tricky because they were so similarly named and similar in appearance. They were the Yost, New Yost No.1 and The New Yost, in that order.
Then change came when market pressures forced the Yost company to produce a more progressive model. As a result the No.15, first introduced in 1908, was a true departure from the old. Yes, it was still marked with the Yost name, but it's design was merely a clone of every other frontstrike, four-bank standard typewriter already on the market. The change was, however, a wise decision since the company stayed in business for over 15 more years.
All of the models up to the No.10 were designed with typebars that kicked like grasshopper's legs that were hung in a circular, upstrike arrangement. These Yosts also had a full, double keyboard. Their inking and type alignment mechanism were also the same. The difference among these models were minimal (except for the bulkiness of the No.10). Most changes were minor cosmetic details or slight structural upgrades. Their escapement was constantly tweaked, too.
The first model, a true Yost No.1, ca.1887, wasn't clearly marked as such but it did have a pair of medallions at the rear that subsequent models did not.
The second model was clearly marked as the New Yost No.1, ca.1889.
Yosts were made by the Yost Writing Machine Company of Bridgeport, Connecticut. They were the invention of George Washington Newton Yost (1831 - 1895). In 1872 G.W.N. Yost also played a key role in convincing Remington to produce the first commercially successful typewriter, the Sholes & Glidden. In typewriter circles the Yost name was (is) very important and immediately recognized, as are the forms of the earlier Yost models that bear his name.
It wasn't until the No.10 model was released in 1905 that the appearance of the Yosts was significantly altered. The No.10's frame was built out to enclose more of its inner mechanisms, which gave it a bulkier build. Despite the new form the No.10 was still obviously a Yost because, functionally, it was similar to its predecessors. And as we all know, form follows function.
The third model was marked as The New Yost, ca.1891.
Things finally started to make a little more sense with the fourth model, which was clearly marked as the Yost No.4, ca.1895. Model Nos.6 - 9 were wide-carriage version of the No.4.