Kannuki-gatame
(bar armlock)

"Tori's right hand lets go of Uke's left lapel and coils round Uke's left forearm from the outside, nearer the elbow, and presses the palm of his left hand on the top of Uke's left shoulder and the palm of his right hand on the radial edge of his own left forearm almost on the level of the elbow. Tori extends his arms to form a lever against Uke's left elbow joint."