Colaboración
ARTE
BELLEZA Y BIENESTAR
ARTESANÍA
CULTURA E HISTORIA
ENTRETENIMIENTO
MEDIO AMBIENTE
COMIDA Y BEBIDAS
INGENIERÍA INVERSA
CIENCIAS
DEPORTES
TECNOLOGÍA
TECNOLOGÍA VESTIBLE
Separating Funnel: Glass Stopcock with a Screw-On Plastic Stem (Demers, US 5,580,528)
A separating funnel holds two liquids that do not mix, so the lower layer can be run off through a tap at the bottom. J. P. Demers (US 5,580,528, 1996) fuses a bought glass stopcock to the bottom of a pear-shaped glass vessel and screws a flexible plastic stem onto it, because the usual glass stem breaks just below the stopcock.
The glass stopcock body stays clear, so you can watch the boundary between the two liquids as it reaches the tap.
Source: J. P. Demers, US Patent 5,580,528 (filed 1995, granted 1996). Picture: its Figs. 1-3.
Avanzado
Unknown
Instrucciones
1
1
Read Demers
Read Demers
"The stresses resulting from such impacts usually fracture the glass just below the stopcock, or else chip off the end of the stem ... When the fracture is close to the stopcock, repair is impossible without replacing the stopcock".
2
2
Blow the vessel
Blow the vessel
Blow a glass vessel, pear-shaped (or spherical or cylindrical), with a neck at the top for pouring in the liquids and an opening at the bottom. Glass, size and how it is blown are not given; the patent leaves this to a scientific glassblower.
Materiales para este paso:
Vidrio desconocido1 vesselHerramientas necesarias:
Soplete de vidriero de mesa
Método de conformado desconocido
Dimensiones desconocidas3
3
Fuse on the stopcock
Fuse on the stopcock
Take a glass-bodied stopcock (bought: the patent calls them articles of commerce, with a glass or PTFE plug) and fuse its upper stem to the bottom of the vessel so the vessel opens straight into the stem. Form a male thread on the end of its lower stem (how is not given).
Materiales para este paso:
Llave de paso de vidrio1 plug of glass or PTFEHerramientas necesarias:
Soplete de vidriero de mesaMétodo de conformado desconocido4
4
Make the plastic stem
Make the plastic stem
Make a stem of moderately flexible plastic tube with a female thread in its upper end and an inner shoulder where the end of the glass thread meets it. Lay an O-ring on the shoulder when the funnel will hold reactive or toxic liquids or work under pressure or vacuum. Cut the lower end at about 45 degrees as a drip tip. The plastic is not given.
Materiales para este paso:
Material desconocido1 flexible plastic stem
Junta tórica1 piezaHerramientas necesarias:
Método de conformado desconocidoDimensiones desconocidas5
5
Assemble and use
Assemble and use
Screw the plastic stem onto the glass thread. Close the stopcock, pour the two liquids in at the neck, shake and let them separate, then turn the plug to line its bore up with the stems and run the lower layer off, watching the boundary through the glass stopcock. Unscrew the stem to clear a blocked stopcock.
Materiales
4- 1 vesselMarcador de posición
- 1 plug of glass or PTFEMarcador de posición
- 1 flexible plastic stemMarcador de posición
- 1 piezaMarcador de posición
Este plano hace
CC0 Dominio público
Este Blueprint se publica bajo CC0. Eres libre de copiar, modificar, distribuir y usar este trabajo para cualquier propósito, sin pedir permiso.
Apoya al Maker comprando productos a través de su Blueprint, donde gana una Comisión del Maker establecida por los vendedores, o crea una nueva iteración de este Blueprint e inclúyela como conexión en tu propio Blueprint para compartir ingresos.