Only Online Auction
Geneva, Sep 22, 2021
LOT 371
Shore Instrument & Fmg. Co.
Technological miscellaneous; Shore Scleroscope, portable hardness tester; cast-iron and steel
CHF 500 - 1,000
EUR 500 - 950 / USD 550 - 1,100 / HKD 4,300 - 8,600
Cast-iron and steel, patented portable Shore Scleroscope for measuring hardness as a function of material elasticity.
| Grading System | |
|---|---|
Grade: AA |
Very good |
Case: 3-8 |
Good Slightly scratched |
Brand Shore, New York (U.S.A.)
Model “Scleroscope”
Year circa 1920-1930
Case No. 3 980
Material cast-iron and steel
Accessories copies of the invention patent and scientific article
Notes
Elasticity
Property of certain substances which, when distorted, resume their original shape as soon as the distorting force ceases to act. The distorting force may act by pulling, compression, bending or twisting. The elasticity of springs depends on the nature of the metal and the treatments it has undergone.
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Shore Scleroscope
The Shore Scleroscope measures hardness in terms of the elasticity of the material. A diamond-tipped hammer in a graduated glass tube is allowed to fall from a known height on the specimen to be tested, and the hardness number depends on the height to which the hammer rebounds; the harder the material, the higher the rebound.
The device was invented in 1907 and patented under the American invention patent No. 962 790, delivered on June 28, 1910 (application filed, November 26, 1907), to A. F. Shore, owner of the Shore Instruments Manufacturing Company in Jamaica, New York.
Bibliography
· Shore, A. F., “Standard methods of applying the Scleroscope”, in SAE Transactions, International Journal of Engines, 1923, vol. 18, part II, pp. 641-665. The SAE International Journal of Engines is a scholarly, peer-reviewed research Journal dedicated to internal combustion engine, science and engineering.
· Smith, Robert H., Book of Advanced Machine Work, Boston, MS, Industrial Education Book Company, 1919, p. 1316.
CONDITIONS AND INFORMATION FOR BUYERS
The purchase price payable by a buyer will be the sum of the final bid price plus the buyer’s premium, together with any applicable sales or compensating use tax. In addition to the hammer price, the buyer’s premium is payable as follows: 25% of the hammer price on each lot.Important notice – Special conditions Please look carefully at all the photos as they are an integral part of the description. Any defect not mentioned in the descriptions but visible on the photos will be considered as described and cannot lead to any claim. The dimensions are given as an indication and may slightly differ from the measures mentioned by the manufacturers especially for contemporary watches. The photos are not retouched. Colors may differ from reality. For timepieces, we guarantee neither the functioning nor the precision of the movement, nor the water-resistance of the case. In addition, please note that movements, parts of mechanisms or cases may be incomplete. The lots are sold “as is”, described to the best of our knowledge and cannot be returned. Once the online bid is placed by the bidder, it cannot be cancelled.