Specification of William Donald Napier : facilitating dental operations.

  • Napier, William Donald.
Date:
1865
Catalogue details

Licence: Public Domain Mark

Credit: Specification of William Donald Napier : facilitating dental operations. Source: Wellcome Collection.

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    A.D, 1865, 13th March. N° 706. Facilitating Dental Operations, ( This Invention received Provisional Protection only.) PROVISIONAL SPECIFICATION left by William Donald Napier at the Office of the Commissioners of Patents, with his Petition, on the 13th March 1865, ix- - v . t \ . _ * I, William Donald Napier, of 22, George Street, Hanover Square, in the 5 County of Middlesex, do hereby declare the nature of the said Invention for “ Improvements in Apparatus to Facilitate Dental Operations,” to be as follows :— This Invention has for its object improvements in apparatus to facilitate dental operations. In the process of stopping teeth with gold or other material 10 the greatest difficulty the dentist has to contend with is the accumulation of saliva which takes place in the mouth, for it is well known that a tooth cannot be satisfactorily stopped unless the cavity as well as the material employed to stop it be kept dry. The plan usually practised by dentists is to insert small napkins in the mouth in order to absorb the moisture, which mode of treat- 15 ment, although the best means hitherto resorted to has its drawbacks by reason of their tending to increase the action of the salivary glands and so neces¬ sitating their constant removal ; the napkins have also heretofore been much in the way of the operator. Now my Invention consists in the construction and use of apparatus by the 20 employment of which the saliva is caused to flow away from the mouth as quickly as it is secreted. For these purposes a tubular or hollow frame consist-