US126292A - Improvement in automatic fans - Google Patents

Improvement in automatic fans Download PDF

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Publication number
US126292A
US126292A US126292DA US126292A US 126292 A US126292 A US 126292A US 126292D A US126292D A US 126292DA US 126292 A US126292 A US 126292A
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United States
Prior art keywords
improvement
fans
automatic
automatic fans
hall
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D35/00—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions

Definitions

  • My invention relates to an improvement on an automatic fan, patented by me September 26, 1871; apd consists in attaching a base instead of the screw-clamp to the lower end of hollow tube I, reference being had to the accompanyin g drawing, and to the letters marked thereon, in which is shown a side elevation of the fan with my improvement attached.
  • the purpose of the base is to sustain the machine in an upright position, so that it can be set on any level surface.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

W. DE LANCEY HALL.
Improvement in Automatic Fans. No. 126,292, PatentedApril30,1872.
'Witnesses: lnventor' 144% 744% y; $65M iM MOWWL UNITED STATES PATENT OFFICE.
WILLIS DE LANOEY HALL, OF MEMPHIS, TENNESSEE.
IMPROVEMENT IN AUTOMATlC FANS.
Specification forming part of Letters Patent No. 126,292, dated April 30, 1872.
SPEomIoATIoN.
I, WILLIs DE LANGEY HALL, of the city of Memphis, county of Shelby, and State of Tennessee, have invented certain Improvements in Automatic Fans, of which the following is a specification:
My invention relates to an improvement on an automatic fan, patented by me September 26, 1871; apd consists in attaching a base instead of the screw-clamp to the lower end of hollow tube I, reference being had to the accompanyin g drawing, and to the letters marked thereon, in which is shown a side elevation of the fan with my improvement attached.
The purpose of the base is to sustain the machine in an upright position, so that it can be set on any level surface.
Claim.
US126292D Improvement in automatic fans Expired - Lifetime US126292A (en)

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US126292A true US126292A (en) 1872-04-30

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