Pure speculation, but I'm sure in the late 19th/early 20th century, most people probably did not think about it that much, and also were probably poor/uneducated so might not even know if a word was misspelled. I'm guessing, too, that your average vise buyer in those times didn't care about details, just whether or not the vise worked as intended.
Sometimes it's easy to forget that on the GJ, we take vise fetishism to a whole new level. I'm sure there were "vise nerds" back then, but certainly not as many as in modern times.
Even if someone did spot the mistake after the vises were cast, it probably wouldn't make good financial sense to scrap otherwise good vises just because of a spelling error.
That being said, I've posted pics in this thread of a Jacobson 7" swivel jaw, and the B is omitted from the name cast in to the vise body. You would think that employees, regardless of intellect or education, would know how to spell the name of their employer just from seeing the name on signs, the building, uniforms, or their paycheck. I'm guessing my example might have just been a simple oops.
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I'm rusty on the coding front, (haven't done any PHP scripting in over four years or so), but if I can help, I'll give it a shot.
