The Specific Adjusting Machine

History of The Specific Adjusting Machine (cont.)

In another sequence of high-speed films, Dr. Zimmerman's hands, a series of coil springs, the stop watch and depth gauge were shown. These were run on eight coil springs offering different resistances to thrust. Analysis of these pictures and comparison of graphs made it possible to show exactly what a hand adjustment does. The time or speed, the trust, the depth and force applied during the adjustment became real values for the first time. The machine was designed to operate within the factors determined from the hand adjustments. These criteria were that the time elapse during an adjustment is one-sixteenth second, a maximum stroke of three-fourths of an inch, and a maximum force of one-hundred-and-five pounds.


Dr. Luigi H. Canepa, D.C.
1160 Homestead Road
Santa Clara, CA 95050


Telephone: (408) 244-6335


By changing the air pressure, the force used can be varied at will. By raising or lowering the collar on the drive pin, the depth of the thrust can be varied from 1 inch to zero. The adjusting head is mounted on a ball and socket joint permitting changes in the angle of drive over a wide range of positions.

In May, 1948, the machine was completed, preliminary tests were made and all functions were found to be satisfactory. The base of the adjusting machine was made purposely so that the side-posture adjusting table would fit into it and become an integral part of it. The machine was installed in the office on June 6, 1948. On June 10, 1948, a woman who was a long established patient was asked if she would like to be the first patient to be adjusted by the machine. She agreed and the same adjustment was made by machine on the atlas vertebra as had been made previously by hand. The patient's reaction was very enthusiastic. She said that she had experienced less discomfort than by hand.


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