e valve stem, came in contact slightly when moved past each other. It is easy to see, therefore, that when the main cylinder is rotated by a line from the engine shaft the pencil will draw a straight line, except at the lead points, where the valve-stem spur and that on the pencil holder come in… … HOLLINGWORTH'S SOLDERING FUJINAUU. running, but, as before stated, the difference was very to five dollars. They are frequently imitated by fluor the grooves are is solid, as at F, Fig. 2, while the marked. spar, oftener by a composition of paste. This is com- surrounding portions are hollow and…
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