. Canadian machinery and metalworking (January-June 1919). ner head bolt nuts, same as fin-ished nuts. Planer bolt washers net Hollow set screws list plus 20 Collar screws list plus 30, 10 Thumb screws 20 Thumb nuts 65 Patch bolts add 40, 10 Cold pressed nuts to 1% .add $4 50 Cold pressed nuts over 1% 7 00 BILLETS Per srroM tan BILLETS Bessemer billets $43 50 Open-hearth Billets 43 50 sheet bars 47 00 Forging billets 56 00 Wire rods 57 00 Government AND SPIKES Wire nails $5 50 Cut nails 5 85 Miscellaneous wire rfails Spikes, % in. and larger Sp
. Canadian machinery and metalworking (January-June 1919). ner head bolt nuts, same as fin-ished nuts. Planer bolt washers net Hollow set screws list plus 20 Collar screws list plus 30, 10 Thumb screws 20 Thumb nuts 65 Patch bolts add 40, 10 Cold pressed nuts to 1% .add $4 50 Cold pressed nuts over 1% 7 00 BILLETS Per srroM tan BILLETS Bessemer billets $43 50 Open-hearth Billets 43 50 sheet bars 47 00 Forging billets 56 00 Wire rods 57 00 Government AND SPIKES Wire nails $5 50 Cut nails 5 85 Miscellaneous wire rfails Spikes, % in. and larger Spikes, se and 5-16 in ROPE AND PACKINGS Drilling cables, Manila 0 39 Plumbers oakum, per lb 0 10 Packing, square braided 0 38 Packing, No. 1 Italian 0 44 Packing, No. 2 Italian 0 36 Pure Manila rope 0 37 British Manila rope 0 31 New Zealand hemp 0 31 Transmission rope, Manila 0 43 Cotton rope, ^-Ib. and up 0 T4 POLISHED DRILL RODDiscount off list, Montreal andToronto ne* $5 30 5 65 60% .$7 50 . 8 00 February 20, 1919 ( A \ A I) I A N M A C II I N K R V 57. THE BETTER WAY Just the way that suits. Small parts are most economic-ally threaded with the Geometric Threading automatic screw machines cannot profitably dpslowed down to cut threads when there is a Geometric-Threading Machine at hand. Especially since aGeometric Threading Machine costs one-tenth the priceof automatics. Geometric Threading Machines are employed on a large classof small threaded parts that cannot be produced economicallyon the ordinary screw machine. Made in three sizes—to cut i/8 to i/2 inch, %, to % inch, and% to \y-> inch diameter threads. The carriage is mounted on slides and on the largest size machineis moved back and forth by rack andpinion, and in the smaller sizes byhand. Spindle speed changes readily made,adapting the machine to the diameterand material of the work. An adjust-able stop assures accurate length ofthread, and automatically opens thedie head, permitting of drawing thew
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmachinery, bookyear19
