8o CASSIER'S MAGAZINE FIG. 6 A DANGEROUS COLLAR SET SCREW A, AND ALSO A PROJECTING SHAFT WITH KEYWAY B FIGS. 2 AND 3.— THE FORMER SHOWS FIVE POINTS OF DANGER WHICH ARE AVOIDED IN FIG. 10: — L, ARMS OF PULLEY ; M, LARGE KEY HEAD ; N, PROJECTING SHAFT ; P, DEFECTIVE BELT LAP ; Q, CHIPPED FLANGE FIG.… … FIG. 8.— SAFE FORM OF SET SCREW, S, DEEPLY RECESSED AND ADJUSTABLE ONLY BY BOX WRENCH K FIG. 9.— METHOD OF COVERING SHAFT ENDS, AS B AND D IN FIGS. 6 AND 7, WITH A SHEET FIG. 5.— A SHEET IRON BELT GUARD FOR USE WHERE METAL CAP G A PERMANENT HANGER WOULD BE INEXPEDIENT
Engineering
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten04unit-902-0.webp)
