This is the opening of a real patent application advertising a real product (pictured) in 1873 (taken from the book “Victorian Inventions” by Leonard de Vries):
The inventor of the device which we present not only employs the hitherto wasted female power to oscillate a cradle, but at one and the same time to vibrate the dasher of a churn. By this means, it will be observed, the hands of the fair operator are left free for darning stockings, sewing, or other light work while the entire individual is completely utilized. Fathers of large families of girls, Mormons, and others blessed with a superabundance of the gentler sex, are thus afforded an effective method of diverting the latent female energy, usually manifested in the pursuit of novels, beaux, embroidery, opera-boxes, and bonnets, into channels of useful and profitable labour.
