Instruments, appliances, etc. for crown-, bridge- and metal work : Hollingsworth system of crown- and bridge-work. Various methods of setting Logan crowns / S.S. White Dental Manufacturing Co.

  • S.S. White Dental Manufacturing Company.
Date:
1911
Catalogue details

Licence: In copyright

Credit: Instruments, appliances, etc. for crown-, bridge- and metal work : Hollingsworth system of crown- and bridge-work. Various methods of setting Logan crowns / S.S. White Dental Manufacturing Co. Source: Wellcome Collection.

Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.

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    MELTING LADLES These Ladles are for melting metals, for dies and counter dies. To prevent tlieir promiscuous use,] which would contaminate the metals melted in both, the larger one (2J inches deep, 4| inches in diameter at the top) is marked L, to suggest its use for lead; the smaller (2| inches deep, 4J inches in diameter) is marked Z for zinc. A third size, of the same general character, but unlettered, and commonly called Extra Large, can< be used for other metals on occasion. It holds about the same quantity as the L, but is heavier and differs sufficiently in appearance (2* inches deep, 4i inches in diameter) to be readily distinguished from it. The detachable handle fits all three. The two lettered Ladles are sold as a set. PRICES Set of two Ladles designated by the letters L and Z for lead and zinc, and one detach- able Handle per set $0.80 Ladles, separate, L or Z each .30 Extra Large Ladle (2,1 inches deep; 4A inches diameter) with detachable Handle... .70 Set of two Extra Large Ladles and one Detachable Handle per set 1.00 Extra Large Ladle separate each .40 Detachable Handle .30 Trade-Mark CALCAR Reg. in U. S. Pat. Off. A SUBSTITUTE FOR MOLDING SAND Suggested by Dr. A. D. Gritman This compound is free from some of the objections to the various forms of Molding Sand. It does not require the care to keep it in good condition; is free from odor, both in the can and when having metal poured into it; does not become lumpy from use; does not dry out and require retempering when exposed to the atmosphere. As a matter of fact, while it will lose a portion of its water when used continually—the frequent contact with the molten metal is bound to cause evaporation—all that is necessary is to leave it ex- posed to the air for a few hours, and its working quality is restored, because it is hygroscopic. Calcar is clean, sightly, and may be said to be always ready for use. It copies models exactly and smoothly in every detail. Models and dies may be cast in it with zinc, Babbitt metal, or any of the fusible alloys. Any style of flask may be used. Calcar as sold has just enough moisture to work well. With little care it keeps in good condition for years. A tin can is a good receptacle to store it in. Put up in 2-qt. cans.