Opinion by
Mb. Justice Fell,The plaintiff, while in the employ of the defendants, and engaged in the construction of a steel frame building, was injured by the falling of a boom. The accident was caused by the failure of a fellow-workman, who had charge of a hoisting engine, to insert a lever far enough between the cogs of a gear wheel to secure it in place. By the slipping of the lever, a sudden strain was put upon a line by which the boom was raised and lowered, causing it to break and let the boom fall. The machinery was not in any way defective. The allegation of negligence relied on was that the defendant ' employed an incompetent workman to operate the engine, and retained him in their service after they knew or should have known that he was incompetent. The ground of incompetence alleged was that this man had not strength enough properly to operate the engine. The only proof in support of this was that seventeen years before his left hand had been injured by a gunshot wound, and *484that six months before he had fractured a bone of his left wrist. The only fact from which knowledge of the alleged unfitness of the man could be imputed to his employers was that at times when at work he wore a leather bandage on his hand.
The uncontradicted testimony was that this man had been engaged almost continuously for seventeen years in different branches of structural iron work; that during this time he had very frequently been in charge of hoisting engines ; that he had operated the defendants’ engine for several weeks prior to the accident, throwing the lever hundreds of times a day; that the injury to his hand did not impair its use for a direct pull or push, and the bandage was worn when doing line work or riveting to guard against a side strain on his hand; that the injury to his wrist was trifling and did not impair its strength, and had kept him from work only six days ; and that his strength was sufficient properly to handle the lever, and that in doing this there was no occasion for him to use his left hand, .because he stood in a position where he used his right hand.
The burden was on the plaintiff to establish the incompetency of the engineer, and such facts as would charge the defendants with knowledge of it. He presented a case that rested wholly upon inferences which were too strained to support an intelligent finding in his favor. The undisputed testimony as to the competency of his fellow-workman left him no case whatever. The judgment is reversed, and judgment is now entered for the defendants.