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Henry A. Duc, Jr. Hydraulic Pressure Turbine Patent Lithograph

Currency:USD Category:Collectibles / Autographs Start Price:NA Estimated At:200.00 - 400.00 USD
Henry A. Duc, Jr. Hydraulic Pressure Turbine Patent Lithograph

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Auction Date:2022 Dec 15 @ 18:00 (UTC-5 : EST/CDT)
Location:15th Floor WeWork, Boston, Massachusetts, 02108, United States
ALS - Autograph Letter Signed
ANS - Autograph Note Signed
AQS - Autograph Quotation Signed
AMQS - Autograph Musical Quotation Signed
DS - Document Signed
FDC - First Day Cover
Inscribed - “Personalized”
ISP - Inscribed Signed Photograph
LS - Letter Signed
SP - Signed Photograph
TLS - Typed Letter Signed
Original patent lithographs and specification sheet for Henry A. Duc, Jr.'s' "Apparatus for Propelling Vessels by Hydraulic Pressure," five pages, 7.75 x 11.5, patented May 24, 1910. The diagrams show multiple views of the apparatus for propulsion of vessels. The specification sheet describes the invention in detail, which comprises a "novel arrangement and construction of rotary turbine actuated pumps for imparting pressure to the currents of water and driving the same with increased power or velocity toward the exit of the channels." In fine condition.