Upper cannon 1560-90
Upper arm for use with floating elbow. Formed with a turner - the upper segment of one large plate and two small articulating lames on the outside. The upper is secured to the lower by a raised ridge on the upper which engages flare on the lower plate. There is a small hook on the inside to secure the pauldron strap. The upper edge with an inward turned roped roll with two parallel ridges. A narrow outward turn at the inside of the elbow. Rivets on the upper plate would have secured a leather tab used to lace the arm to the clothing. pairs of holes at the bottom would have secured the leather strap for the elbow. Ex. Royal House of Hanover.
Height of the lower section 5 1/2 in. tapering down to 2 in. at the inside measured from the center of the raised ridge for rotation. Upper 5 in. on the outside and 1 4/3 on the inside. Diameter 5 1/4 - 5 1/2 on the upper and 4 3/4 on the lower.
Thickness of the lower generally .030-.045 with some small portions reaching .050. The main plate of the upper thicker - .050-.060 with some small portions reaching .070. This difference in thickness appears to be intentional. The additional thickness to one section would likely help the rotator resist bending so that it would continue to work under use.
If you have any questions, please send them to Wade Allen
This site last updated Mon Dec 27 11:29:14 EST 2021