. Biochemical bulletin. Biochemistry. Serghis Morgidis 147 Figs. I and 2. The "pinch-cock" consists of a movable frame ^i fj 9> ^h supported by two uprights, c and d, and two brass bars, a and b. The ft^rmer is permanently fixed to the parallel rods, g and h, by means of pins. The latter, b, can be shifted freely over the rods, g and hj and is attached to j, which can be moved either way in a horizontal plane by means of the set screws k and /. A rubber tube, held in position by two supports, n and Oj as can be seen in Fig. 2, passes between the bars a and bj the inner faces of wh
. Biochemical bulletin. Biochemistry. Serghis Morgidis 147 Figs. I and 2. The "pinch-cock" consists of a movable frame ^i fj 9> ^h supported by two uprights, c and d, and two brass bars, a and b. The ft^rmer is permanently fixed to the parallel rods, g and h, by means of pins. The latter, b, can be shifted freely over the rods, g and hj and is attached to j, which can be moved either way in a horizontal plane by means of the set screws k and /. A rubber tube, held in position by two supports, n and Oj as can be seen in Fig. 2, passes between the bars a and bj the inner faces of which. SIDE !;i|iiiiiii l:]l, rf- m^ I k -«—e- h IBUl;!!.! P I TOP VI EW are rounded off so as not to injure the rubber tube. The lumen of the tube may be left entirely open, or it may be entirely closed, by varying the distance between the bars, a and b, with the set screws. In this way a permanent flow of gas at any desired rate can be secured. A further increase in the rate of delivery, or a complete shutting off of the current, is effected by shifting the frame, ^, f, 9, h^ to the right or left. These movements are controlled by oppositely-placed powerful electromagnets. When the opening be- tween the horizontal bars, a and b, has been once adjusted, it re- mains unchanged because on the one hand the set screws hold bar b securely fixed, while bar a, which is attached to the frame, is maintained in a fixed position by the catch in. By lifting that Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Columbia University Biochemical Association. New York, Columbia University Biochemical Association
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbiochem, bookyear1916
