OCR Text |
Show 4830 Swanholm- D 2844 would be sheared off. necessary to install a new pin, and proceed. Q What is this thing you refer to as shearing off of the propeller? A The propeller is -- Q I understand what the propeller is. A -- is attached to the drive shaft of the motor, the particular type we were using, which were Eltos, being a small brass pin known as a shear pin. This pin will give with impact on a rock with a heavy packed sandbar. The principle of it to prevent damage to the gears of your out- board motor. It will break the brass pin. And when you get out of your difficulty you put in a new pin and back into deeper water again. Q Does that carry off propeller? A No, the propeller is attached by another bolt, a pin which prevents the loss of the propeller. Q When you completed your work down there in 1828, how did your party go out? A I went out with these two boats, four of us made the trip up the river, about the 15th of December. It was just after the ice cakes had started coming down the river. Q Did you have any difficulties on the way up with the operation of these boats? |