Edison Laboratory 5/8/91
Edison Phonograph Works
Gentlemen
The following is a list of metal work required for drums as a rollers for several ore seperators
7 pcs shafting 2 15/16x12’10” 168 bolts 3/4x4 ½- two washers with each
7 “ “ 2 7/16x11”3” 84 “ 5/8x3/2 “ “ “ “
14 “ “ 2 7/16x4’3” see drawing 28 doz flat head screws no 18-2 ¼ inches
7 “ “ 2 8/16x9’2” 56 “ “ “ “ “ 16-1 ¾ “
7 “ “ 1 7/16x9’2” 364 “ “ “ “ “ 18-2 “
14 collars for 2 15/16 shaft 11 “ “ “ “ “ “ 18-3 ½”
14 “ “ 2 7/16 “ 56 lag screws. 3/8x8
14 “ “ 2 3/16 “ 7 pairs fast + loose pulley 2 15/16x10”x46”
14 cast flanges for 2 15/16 “ see pattern 7 feed drawing pulleys for 2 7/16 shaft
14 “ “ “ 2 7/16 “ see drawing
14 “ “ “ 2 3/16 “ See detail drawings for other metal-
14 “ “ “ 6” roller “ work and magnets
Pillow blocks as per drawings Yours truly,
Belt tighteners-NJ & PA Coctg will supply Edison Laboratory
14 keys 7/8x5/8x3 ½ Thomas
14 “ 5/8x5/8x3 ½

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