. Railway master mechanic [microform] . e bed to the quick changeturret-feed-box at the rear of head-stock, which is pro-vided with a neat and substantial cover. Provision is made on the compound rest slide to quick-ly attach the turret top-slide to same. This is very valu-able when wishing to impart to the turret the feeds ofthe carriage, such as in large tapping operations. Insuch a case the taps get a positive lead, since the screwcutting mechanism can be engaged in the apron and theproper lead thereby transmitted to the turret slide, carry-ing the tap. This valuable feature relieves the ta
. Railway master mechanic [microform] . e bed to the quick changeturret-feed-box at the rear of head-stock, which is pro-vided with a neat and substantial cover. Provision is made on the compound rest slide to quick-ly attach the turret top-slide to same. This is very valu-able when wishing to impart to the turret the feeds ofthe carriage, such as in large tapping operations. Insuch a case the taps get a positive lead, since the screwcutting mechanism can be engaged in the apron and theproper lead thereby transmitted to the turret slide, carry-ing the tap. This valuable feature relieves the tap ofall dragging at the start and the positive lead pre-vents the reaming tendency of the tap on the hole atthe start, which would spoil valuable work, if not pro-vided for in this way. This feature is also of value inordinary jobs of chasing internal threads with a turrettool. Feeds of turret can be reversed, which is a valuablefeature when wishing to back face or of feeds is controlled by the lever, conveniently. NEW 36 IN. HEAVY PATTERN LATHE. RAILWAY MASTER MECHANIC January, 1909
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1895
