$118,000. Average Physical Therapist salaries for job postings in San Francisco Bay Area, CA are 33% higher than average Physical Therapist salaries for job postings nationwide.118,000. Average Physical Therapist salaries for job postings in San Francisco Bay Area, CA are 33% higher than average Physical Therapist salaries for job postings nationwide.
It was over 1500 years later in 1790, that the first workable sewing machine was invented and patented by the British inventor Thomas Saint. Earlier, in 1755, Karl Weisenthal, a German inventor, devised the first sewing machine needle, but did not produce a complete machine.
In 1830 a French tailor, Barthelemy Thimonnier (1793-1857), patented the first practical sewing machine. It employed a hook-tipped needle, much like an embroidery needle, that was moved downward by a cord-connected foot treadle and returned by a spring. Like Thomas Saint's machine, it produced a chain stitch.