Object Record
Images
Metadata
Title |
DC3 Tail Wheel Shear Pin, c. 1936-1955 |
Object Name |
Pin, Cotter |
Description |
DC3 Tail Wheel Shear Pin, c. 1936-1955. Used to lock the airplane's tail wheel in the straight position for take-off and landing. Cylindrical metal tube with screw ridges at end. Other end has opening and screw ridges inside hole. Embossed yellow text on black label strips circumventing metal tube. Clear tape over labels secure labels to metal tube. |
Date |
c. 1936-1955 |
Creator |
Unknown |
Role |
Lithographer |
Catalog Number |
2013.007.023 |
Dimensions |
H-5.25 W-1 D-1 inches |
Collection |
3D - Metalworking Tools & Equipment |
Inscription Text |
"DC3 / TAIL WHEEL / SHEER PIN" (Embossed on black sticker label) |
Provenance |
DC3 Tail Wheel sheer pin used to lock the airplane's tail wheel in the straight position for take-off and landing. |
Notes |
"A shear pin is a mechanical detail designed to allow a specific outcome to occur once a predetermined force is applied. It can either function as a safeguard designed to break to protect other parts, or as a conditional operator that will not allow a mechanical device to operate until the correct force is applied..." [https://en.wikipedia.org/wiki/Shear_pin 7/272015] "What was to become perhaps the most important airliner in history, quickly established its reputation with this and other operators, including the military. During World War II, the DC-3 (named Dakota by Britain) was mass produced as a utility transport..." [http://www.aviation-history.com/douglas/dc3.html 7/27/2015] |
Search Terms |
Airlines - United Airlines Airplanes Bandit Built Store Cavalli Family Cavalli Bros. Store Cavalli, Charles Cavalli, Frank G. Cavalli, Milton R. La Honda - Businesses San Francisco International Airport (SFO) |
Subjects |
Aircraft Airplane equipment Airplanes Airports |
People |
Cavalli Family Cavalli, Charles and Frank Cavalli, Milton R. |
Credit line |
Courtesy of Milton Cavalli |