An attachment for the throw or stroke of the tilt-table lever of a shingle machine may seem a trivial matter, but it is very important in such machines to have a device which can be changed without the necessity of a wrench, at the same time being posi tive to set and lock. In this, shown by Fig. 1. the handle has cast to it a Projection that engages in a groove in the enlarged part of a sliding bar that is placed between two thumb nuts, which latter screw through the lugs on the casting; and the enlarged part of the sliding bar strikes the end of each not as the. lever is tilted one way or the other. Screwing the thumb-nuts one way or the other gives the lever more or less throw, and therefore gives the tilt-table more or less taper. These thumb-nuts are grooved on their edges, and a swinging notch or lock engages with one of the grooves when it is hang ing down. thus making it impossible to turn the nuts, and the weight of the stop causes them always to remain in this position unless raised by hand.
What is known as a stealer-carriage for shingle machines is a device for dogging a board or other thin piece of material, and presenting it to the action of the single saw so as to utilize the thin material that would otherwise have to go to the steam burner. One made by
J. C. Simonds & Son is shown in Fig. 2. The carriage is so constructed as to wedge or lock the board or shingle on three sides, and instead of wedging it lengthwise, as is usual with such clamps, it holds it cross wise. The shingle that is being sawed is not dogged at all, but all the dogoing is done on the piece above it and on the last piece, or the piece that is left after all shingles are cut out of the board, thus making it impossible to spring the. shingles. This carriage will clamp and hold a piece that is only H in. thick at the thick end above the saw. The split or wedge piece that is left after the last shingle is cut is held in the carriage and drawn back from over the saw.
Shoe Machinery : see Leather-working Machinery.
Shoe Stamp : see Ore-crushing Machinery.