Showing papers on "Bell mouth published in 1972"
Patent•
19 May 1972
TL;DR: In this article, an apparatus for spinning a filament includes a vertical spindle carrying a bobbin of filament to be spun and having a balloon-limiting bell surrounding the bobbin and formed with an upwardly open mouth.
Abstract: An apparatus for spinning a filament includes a vertical spindle carrying a bobbin of filament to be spun and having a balloonlimiting bell surrounding the bobbin and formed with an upwardly open mouth. The spindle carries at its upper end an upwardly tapered guide pin which projects through the bell mouth and around which the filament is wound several times. The filament is pulled tangentially off this guide pin at an acute angle to the spindle axis as the bell, spindle, and guide pin are rotated about this axis. A tensioning rod may be provided between the pin and the driven takeup spool. This rod is displaceable and may be resiliently biased parallel to the spindle axis. No other filament guide is provided on the bell.
8 citations
01 Jan 1972
TL;DR: The simplest arrangement of a low-head hydro-electric unit is that proposed by the well-known American engineer, L. F. Harza in 1919-22 as mentioned in this paper, where the generator rotor is mounted on the propeller runner, the water flowing through the generator rim and the turbine casing being sealed against the flanks of the turbine rim on either side.
Abstract: The simplest arrangement of a low-head hydro-electric unit is that proposed by the well-known American engineer, L. F. Harza in 1919–22; Fig. 1 is taken from his Patent Specification. The generator rotor is mounted on the propeller runner, the water flowing through the generator rim and the turbine casing being sealed against the flanks of the generator rim on either side. The unit has a horizontal shaft so that an inlet bell mouth suffices to lead the water to the runner, and the draft tube can be the straight diffuser, which is the most efficient form of energy recovery.
1 citations