Exemplar of an anchor escapement - Instrument's card

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Exemplar of an anchor escapement

Dating

16 June 1942

Maker

Antonio Cherubini

The anchor escapement (invented around 1657 by Robert Hooke) is a mechanical system capable of transforming the oscillating movement in the slow, step by step and adjust rotational motion of a gear of which it periodically clears the suitably shaped teeth of a gaer. The anchor escapement has found wide use in the clocks. This device also gives the energy needed to compensate the losses caused by friction to the swinging body.

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Exemplar of an anchor escapement

Cataloghi	Nº	Voce
Inv. 2016	161	Exemplar of an anchor escapement Provisional numbering!
Inv. 1870	980	Modello di scappamento ad ancora

Section

Mechanics

Window

Conditions

Complete

Working D

Intact

Large	32.0 cm (12.6 in)
Width	15.0 cm (5.9 in)
Height	73.0 cm (28.7 in)

Materials

Sources

Bernardi G., Apparecchi di fisica, III Edizione, Ditta Prof. Gaetano Bernardi, Tranto, 1931, pag. 3, fig. 7423
Daguin P. A., Cours de physique élémentaire avec les applications a la météorologie , E. Privat, Toulouse, 1863, pag. 55, fig. 55
Desbeaux E., Fisica Moderna, Casa Editrice Sonzogno, Milano, 1892, pag. 501, fig. 420
Felice M., Elementi di fisica, Ditta G. B. Paravia e Comp., Torino, 1887/90, Vol. 1, pag. 256, fig. 89
Resti E., Catalogo generale di apparecchi per l'insegnamento della fisica, Ditta Emilio Resti di Franco Brambilla, Pubblicazi, Milano, 1930, pag. 18, fig. 72
Tarquini A., Apparecchi di fisica, Antonio Tarquini, Roma, 1928, pag. 25, fig. 109

The additional indications which integrate the items of the conservation's state have the following meaning: (?) = maybe complete; M = maintenance; P = partial; R = restored; D = used for teaching; NC = not checked; X = impossible to verify.

In order to avoid that instruments' cards without the english description text of the device be directly selected, I added a special filter with which only the complete cards are shown in the menu. Anyhow all the partial english instruments' cards (with instrument's dating, dimensions, state of conservation...) can always be seen even if they haven't the english description text. To read this uncomplete cards is sufficient to click, for example, on an instrument's picture or on the word "View" of the table column called "Card" every time they appear in the other pages of this database.