By Bernard D. Bolas
Excerpt from A guide of Laboratory Glass-Blowing
To hide the total box of glass-blowing in a small guide will be very unlikely. to aim even a whole define of the tools utilized in making advertisement gear may contain greater than will be undertaken with no omitting the basic information of manipulation beginner wishes. i've got, consequently, restrained myself so far as attainable to such paintings as will locate functional program within the laboratory and may, i'm hoping, turn out of price to these whose pursuits lie therein.
The approach to remedy and a bit disjointed form of writing were selected exclusively with the view to economic climate of house with no the undue sacrifice of clearness.
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Additional info for A Handbook of Laboratory Glass-Blowing
This expanded spot is then re-heated and blown out until it shown in e, the thin fragments of glass are removed and the end of the small tube turned out as shown in f. After this the bursts as procedure is similar to that used in jointing two tubes of equal size. When these two forms of joint have been " mastered, a It is difficulty. in Fig. used in piece made present but little in three stages as shown will and the procedure is similar to that Care joining a large and small tube. 5, should be taken to avoid softening the top of the "T" distort too much, or the glass will bend and the finished work although a slight ; bend can be back.
V-Q \\ VJ I m a s Fig. A 12 MacLeod Pump. illustrated by b, Fig. 12. One form It of this is has the advantage LABORATORY GLASS-BLOWING that the 51 mercury reservoir may be allowed become empty without affecting the vacuum to in the vessel being exhausted. Glass. "Spinning" the use of suitable By quite possible to continuous thread of glass, which appliances, to it is have almost the softness threads flexibility of woollen fibre the constitutes a ; draw out a is so thin as and apparent mass of such " wool glass " of commerce.
Cutting small glass tubes. The use of the wheel-cutter special mention as it will calls cut at for no any angle, somewhat although pressure required greater than that needed by most diamonds. the is CHAPTER III Internal Seals, Air-Traps, Spray Arresters, Filter-PumpsSprays, Condensers ; Plain, Double Surface, and Spherical Vacuum Tubes, Fat Extraction Apparatus Alarm Thermometers, "Spinning" Thermometers, Soxhlet Tubes and Electrode Work, Enclosed Recording Thermometers, Glass. Internal Seals. It is convenient to class those cases in which a glass tube passes through of another tube or bulb under the the wall " Internal Seals," heading of These are met with in barometers, spray arresters, and filter pumps, in condensers and some forms of vacuum tube.