After considerable study and expense the company have launched upon the somewhat overcrowded sewing machine market a new invention called the No.9, which for its many merits deserves and will no doubt receive, a large share of public patronage. The Wheeler & Wilson Company long since came to the conclusion that the rotary movement is the true mechanical principle for manufacturing machines and most experts hold that this is also true as regards family machines. The Company, as is well known, have always been in favour of the rotary principle and apparently intend to stand by it. The stitch-forming mechanism of the No.9 is, therefore, similar to that of the No.8, D10 and No.12, but, as distinct from the No.8, there is no vibrating arm, two revolving shafts being used, an upper and lower, the driving pulley being attached to the former and the machine constructed on the high-arm principle. The take-up is unusually short and is placed just over the needle on the head block. The thread controller is thoroughly automatic in action and comprises several decided improvements, which contribute to the production of a stitch which is simply perfection. The driving wheel revolves in a reverse direction to the No.8.
The Sewing Machine Gazette 1888