research
 Patents
 Books
 Literature
 Articles
 Timeline
 Auction Archive

about
 About this site
 Wanted to buy

bulb gallery

Incandescent:
C
carbon
WD
drawn tungsten
WC
coiled tungsten
WM
mini tungsten
WS
pressed tung.
FG
figural bulbs
XL
christmas
XS
christmas sets
T
tantalum

Discharge:
NE
neon lamps
AR
argon lamps
XE
xenon lamps
MA
mercury
MC
fluorescent
MS
special mercury

Hardware:
F
fuses
FX
fixtures
PF
plugs & fittings
SA
sockets
SW
switches

tube gallery

 X-ray
 Geissler
 Crookes
 Radio
 Box art

museum pics

 Dr. Hugh Hicks
 
Fort Myers, FL.
 S.Slabyhoudek

links

 Related links
 Submit a link

 

Author Topic: Early Italian Cruto bulb - picture  (Read 5026 times)

Offline Tim

  • Administrator
  • Hero Member
  • *****
  • Posts: 831
    • http://www.bulbcollector.com
Early Italian Cruto bulb - picture
« on: December 17, 2002, 08:55:00 pm »
My apologies for posting pictures here and not keeping my galleries on the main site updated.  Someday I?ll get motivated to update the website    In the meantime? Here is a picture of a recent addition that might be interesting to others.  From what I?ve learned from searching the net,  the Italian Alessandro Cruto was responsible for developing a successful hollow platinum filament.  The platinum filament was treated with graphite in a hydrocarbon atmosphere. Cruto was often dubbed the Italian Edison.   Armed with this information, I?m not positive if this lamp employs this type of filament. Also, I?m unsure of the exact date it was made.  Interestingly, the bulb is fitted with a Heisler type base and has ?Cruto? deeply stamped in the brass.  The base is filled with plaster and no other markings appear on the bulb.  If anyone can provide more information on this old timer, I would like to learn more about Cruto and his company. I would also like to know if the bulb was made in Italy.  This particular example was located in the Netherlands.




------------------
Tim
Kilokat's Antique Light Bulb Site
Mountain Dew Collectibles, Volume I