18A
VOLUME
19, N O .
Α. Η. Τ. CO. SPECIFICATION
NEW TYPE PINCH CLAMPS For quick, convenien t and safe mounting and dis mantling of appa ratus with spherical ball -and -socket intercha ngea b le ground glass joints*
Fig. 1. Showing appearance of Sizes 12 and 18 and method of attaching to joints. Parts held securely by spring upon release of finger pressure.
Fig. 2. Showing appearance of Sizes 28 to 65, inch, and method of attaching to joint. After release of finger pressure, locking device is screwed into position.
PINCH CLAMPS, A.H.T. Co. Specification (Patented), for use on spherical ball-and-socket glass joints. Of brass, with smooth, black, corrosion-resistant finish, and with strong, spring closed, forked jaws. With the two parts of the glass joint held in one hand, and the Clamp held between thumb and forefinger of the other hand, as shown in Fig. 1 and Fig. 2, the Clamp can be quickly slipped over the joint. When pressure is released, the two parts are held securely by the spring. 3241. Sizes 28 to 65, inclusive, are provided with a screw locking Showing appear ance of Sizes 12 device in addition to the spiral spring, so that a considerable and 18. Joint held securely by spring. 3241. load can be suspended from the joint without danger of leak Showing appearance of Sizes 28 age. However, the Clamps are designed primarily for securing to 65, inch, with locking device screwed into position. the joint and are not intended to replace the usual clamps, rings, tripods, etc., as ordinarily used for supporting glassware assemblies. The size number indicates the diameter in millimeters of the ball over which the Clamp fits. The use of these Clamps adds greatly to the convenience and speed of mounting and dismantling glass apparatus with spherical interchangeable ground joints, and reduces the possibility of breakage in handling. 3241.
Pinch Clamps, Α. Η . Τ. Co. Specification, as above described. 28 Size number j. . 12 18 Takes spherical joint No 12/1 18/7 28/11 and to 28/15, to 12/5, 18/9 incl. incl. 21 Minimum width of fork opening in jaw, mm. ; 10 13 Each .55 .65 1.20 Code Word. Cybld Cybny Cybow 10% discount in carton containing 12 15% " " lots of 72 one size only 20% " " " " 1U
35 35/20 and 35/25 30 1.55 Cybpu
50 50/30
65 65/40
37 2.35 Cybso
48 3.00 Cybvi
ARTHUR H. T H O M A S COMPANY RETAIL — WHOLESALE — EXPORT
LABORATORY APPARATUS AND REAGENTS WEST WASHINGTON SQUARE, PHILADELPHIA 5, PA., U. S. A.
Cable Address "Balance," Philadelphia
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