$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.
This decreased the amount of manual labor needed. In 1764, a British carpenter and weaver named James Hargreaves invented an improved Spinning Jenny, a hand-powered multiple spinning machine that was the first machine to improve upon the spinning wheel.his decreased the amount of manual labor needed. In 1764, a British carpenter and weaver named James Hargreaves invented an improved Spinning Jenny, a hand-powered multiple spinning machine that was the first machine to improve upon the spinning wheel.