Dental Engine


Patent model for Joaquim Bishop, “Improvement in Electric-Magnetic Dental Engines,” U.S. Patent 166,843 (August 17, 1875); rights assigned to Samuel S. White of Philadelphia.

Joaquim Bishop (1803-1886) was born in Portugal and emigrated to the United States as a child. In 1832 he worked as an assistant to and instrument maker for Robert Hare, Professor of Chemistry at the University of Pennsylvania. In 1842, having mastered Hare's method of refining platinum using the oxy-hydrogen blow torch, he established the J. Bishop & Company Platinum Works in Philadelphia; this firm later relocated to Sugartown, Pa.

Date Made: ca 1873

Maker: Bishop, Joaquim

Location: Currently not on view

See more items in: Medicine and Science: Medicine


Exhibition Location:

Data Source: National Museum of American History

Id Number: MG.M-04245Accession Number: 89797Patent Number: 166,843Catalog Number: M-04245

Object Name: dental pluggerpatent modeldental devicedental plugger, electro magnetic, patent model

Physical Description: metal (overall material)wood (overall material)Measurements: overall: 2 in x 3 in x 9 1/4 in; 5.08 cm x 7.62 cm x 23.495 cmoverall: 2 1/8 in x 9 3/8 in x 3 1/8 in; 5.3975 cm x 23.8125 cm x 7.9375 cm


Record Id: nmah_1444921

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.