793. Stanley clapboard gauge, used to obtain a gauged width of board when installing clapboards or lap siding. Normally used in pairs to position both ends of the board.










794. Ediphone dictation machine, a photo of Edison using one can be seen here.












795. Device for applying pressure, a printer's tool for use in quoins for locking forms of type in chases. Patent number 1,169,533.


After 2-1/4 revolutions, the first piece is fully raised:


Another 2-1/2 turns for the second:


And the same for the third:


I made this drawing to show the inside parts, turning the screw forces the cylinders into the trapezoidal pieces, which raises them up:










796. RJ-22 telephone plug, from the handset.












797. Combination tool, patent number 286,458, uses include wire cutter, tack puller, knife, can opener, nut cracker, wrench, and vise.















798. This is a box knife, for opening and reclosing the boxes that held cigars, sugar, chocolate, or cheese.





































Last week's set is seen below, click here to view the entire post: