WEIGHT AND BALANCE COMPUTER
Item: A Librascope Weight and Balance Computer.
U.S. Patent Number: 2,179,822
Filed: April 17, 1937
Inventor: Lewis W. Imm
Description: The Original Mechanical Analog Aviation Weight and Balance Computer. Computer Instrument is built into a portable brief case. Brief Case material believed to be wood covered with black leather.
Computer dials may be made from one of the earliest form of plastics
(Bakelite). Art Deco design styling.
Serial Number 1129 Type: LC-1
Supporting Documentation: Complete with Untouched Restricted Operations Manual. Including matching serial number 1129.
Librascope Dimensions: 11” High X 18.5” Wide X 3.5” Deep.
Frame Dimensions: 30” High X 37” Wide X 5” Deep.
Weight 42.5 Total weight of mounting including Librascope.
Weight of Librascope is undeterminable (due to mounting).
BU. AERO U.S. NAVY CONTRACT No. 99588
Aircraft type: Consolidated Catalina PBY – 5.
Condition: Librascope and Operations manual Perfect Mint – Untouched.
Factory sealed. No fade. No imperfections. No sun damage.
No warp. No distortions. No fingerprints. No cracking or
pealing. Note: Please ignore flash "Hot Spot" in photo.
Mounting: Museum mounting. Wall Mount Plaque.
Mounting include the addition of two photo’s. One of the back
of the interior of the Librascope machinery and one of an
aviator using a Librascope. Mounting also includes supporting
text and history of the Librascope.
Rarity: Very Rare. May be the only one in existence in Mint Proof
condition with matching Instructional manual.
Location of Manufacture: Burbank, California, U.S.A.
Approximate Date of Manufacture: 1937 - 1938
An Analog Computer
Computer - A machine that calculates.
Analog computer - A computer that performs mathematical operations in a parallel manner on continuous variables. The components of the computer are assembled to permit the computer to perform as a model, or in a manner analogous to some other physical system.
Mechanical analog computer - An analog computer with input and output usually expressed as shaft position or degrees of shaft rotation.
PBY- 5 "CATALINA"
The PBY series seaplanes and amphibians flown extensively by the Navy during WW II. It is a twin-engine, parasol-mounted monoplane equipped with a flying boat hull, retractable tricycle landing gear and retractable wing-tip floats.
The prototype Catalina first flew on March 28, 1935. It was produced by Consolidated Aircraft Corp. in both seaplane and amphibian versions. Catalinas were also produced by Canadian Vickers, Ltd. and the Naval Aircraft Factory. Eventually, nearly 2,500 Catalina derivatives were built for the Navy. Catalinas also were flown by a number of allied nations during and after WW II.