One of the best ideas for a standing press I’ve seen. The adjustable bottom platen solves a lot of problems for modern binders and conservators, that often are working on only one book at a time. It would alleviate the need to add heavy wood packing materials, and the lower platen could be positioned at a comfortable work height.
According to the patent description, “This patent model demonstrates an invention for a bookbinders standing press which was granted patent number 30243. The press has a platen, or upper follower, lowered in the usual way by an iron screw, and a bed, or lower follower, that was raised by a rack and pinion.” Patent date 2 October 1860, Pelletreau, Maltby K.
The ratchet would allow for tremendous pressure with short swings of the press pin, and were not uncommon for heavy duty presses in the 19th century.
Were any ever made? If so, I want one!
There are around 400 printing and binding patent models in the Smithsonian’s Graphic Arts Collection.