6439
Scientific American
Supplement.
No. 404
| Scientific American Supplement, Vol. XVI., No. 404. | NEW YORK, SEPTEMBER 29, 1883. | Scientific American Supplement, $5 a year. |
| Scientific American, established 1845. | Scientific American and Supplement, $7 a year. | |
BIETRIX'S VERTICAL AND HORIZONTAL COMPOUND ENGINE.
Compound engines are tending to come more and moreinto use, inasmuch as they present many advantages overother kinds, especially as regards the saving they effect infuel, and their great regularity, due to the adjusting of thecranks at right angles.
It is not surprising, then, to see our large manufacturers,who desire to maintain a reputation, seeking to create newtypes based upon this principle. But, in multiplying theparts, as is done in these motors, the engine is rendered morecomplicated, and the cost of installation is increased.Hence the difficulty of placing these motors, notwithstandingthe saving in fuel that is gained by employing them.
Messrs. Bietrix & Co., of St. Etienne, however, havedevised a type in which these two inconveniences seem tohave been in a great measure overcome, and which we illustratein the annexed engraving.
COMBINED VERTICAL AND HORIZONTAL COMPOUND STEAM ENGINE.
Description of the Engine.—The engine as a whole is representedin longitudinal elevation in Fig. 1, in plan in Fig.2, and in side view in Fig. 3. Fig. 4 shows the condenserin transverse section.
The motor consists of a small vertical cylinder, A, and ofa large horizontal one, C, both projecting over a stronghollow frame, B, which connects them and carries theguides, g g', and the pillow block, P, of the driving shaft,p. The condenser, D, is in a line with the large cylinder,and the piston, D², of its pump is mounted upon the prolongation,d', of the piston rod, a, of the cylinder, C. Theexpansion gear is controlled by the regulator, and the admissionmay vary from 1/19 to 1/85. Steam is admitted into thesmall cylinder through the pipe, s, and its entrance may beregulated at will by acting upon the hand wheel, s', whichcontrols the maneuvering rod, s². After expanding, thesteam, in escaping from the smaller cylinder, passes throughthe pipe, r, into the feed-water heater, R, and then acts inthe larger cylinder, c, in order to pass afterward to the condenser,D, through the pipe, d.
The frame, B, is in two parts, the vertical part being adjustedby keys