Patent consists of a method of preparing photographs for coloring: first immersing the photo in a "clearing solution of rosin and parrafine, each previously dissolved in turpentine, and then applying to the face a coat of rosin dissolved in alcohol, and to the back a coat of the clearing solution..." Common oil colors are then applied to the back "in the usual way."
Dick’s improvement in “Signal-Lights for Locomotives” included a combination of a stationary and a moveable headlight which could also identify the train name or number.
Pauline Hortense Gontard, of Cortébert, Switzerland, submitted this brass model with her patent application for an improvement in the winding mechanism in a stem winding watch or keyless watch. By the time, she applied for the patent in the United States in 1879, American watchmakers were mass producing watches and competing with European watch makers.
Stem winding watches were invented by a French clock maker in 1842 and patented in Europe in 1845. Before this time a key was necessary to wind a watch mechanism.
Small metal model or example of a design for a spring clasp mechanism to securing an earring to the ear lobe. The design specifications also allowed for and concave/convex discs to help the earring seat itself on the ear lobe or a pin on the disc incase the wearer had pierced ears (This model does not show the pin). The model also shows two eye hooks. One allowed for a dangle and the other allowed a chain and hair clip that would attach to the hair for security.
Inventors C. Latham Sholes and Matthias Schwalback of Milwaukee, Wisconsin, submitted this typewriter model with their patent application for an improved up strike key lever mechanism for printing onto paper. The inventors received number 182,511 on September 9, 1876. The typewriter has two rows of keys in roughly alphabetical layout as well as the numbers 7 and 8. When struck, the keys would rise up and hit the piece of paper lying horizontally on the platen of the typewriter. The carriage would have to be lifted for the typist to see their typed words.
Packard’s improvement in “Cooking Utensils,” her only patented invention, included a new design for a frying pan using rounded recesses to keep eggs in place on the pan while cooking.
Rennie described her only patented invention, for a “Dust Pan,” as having a “peculiar construction” which would assist with “Sweeping Stairs and Floors of Apartments.”
Sewing Machine Patent model, Improvement in Sewing Machines, 1873. Helen A. Blanchard, of Boston, Massachusetts. Patent No. 141987 Issued August 19, 1873. This patent model for an improvement in sewing machines introduced the buttonhole stitch. Blanchard received some twenty-eight patents, many having to do with sewing. She is best remembered for inventing the zigzag overstitch sewing machine.