. Appleton's dictionary of machines, mechanics, engine-work, and engineering. liding cylinder in the head-stock is deprivedof rotary motion, its outer end being connected by a coupling to a second cylinder of smaller diameter,which constrains both to move in a parallel direction ; between these, a square-threaded screw works,which is capable only of longitudinal motion, being connected to the aforesaid coupling, so that thescrew being worked to the left hand, compels the cylinder in the head-stock to travel with it, as is evi-dent from inspection of the figure. The form of head-stock just desc
. Appleton's dictionary of machines, mechanics, engine-work, and engineering. liding cylinder in the head-stock is deprivedof rotary motion, its outer end being connected by a coupling to a second cylinder of smaller diameter,which constrains both to move in a parallel direction ; between these, a square-threaded screw works,which is capable only of longitudinal motion, being connected to the aforesaid coupling, so that thescrew being worked to the left hand, compels the cylinder in the head-stock to travel with it, as is evi-dent from inspection of the figure. The form of head-stock just described probably suggested that generally known as the cylinder head-stock. This was invented simultaneously, we believe, by M. Collas, of Paris, and Mr. Joseph Clement,of London. The arrangement now usually adopted is shown in section in Fig. 3458. The head-stockis bored out true and an iron or steel cylinder ground therein so as to insure an accurate fit; this re-ceives a forward and backward motion from a screw which is rendered endless by means of a collar or 3458.
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Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861
