There is no evidence in this case to show that the defendant was negligent. Previous to the accident the sawing machine had been running perfectly. There is no evidence of any defect or want of repair in the machine, or what caused the arbor to fly from the box. It does not appear when the machine had been inspected or repaired.
The accident might have been caused by a latent defect which the defendant could not have discovered if an inspection had been made. The carelessness of Willard in operating the machine might have caused the accident. It might have happened by reason of a defect which the defendant by due diligence could have discovered *Page 486 and repaired. Various other things could be suggested that would have produced the accident, for some of which the defendant might have been liable and for some of which he might not. The burden of proof being upon the plaintiff to show that the defendant was negligent, he fails to present any evidence to sustain it.
If the case had been submitted to the jury, any finding by them relative to the real cause of the accident would have been a mere guess or conjecture. "In this state the jury are not permitted to find material facts without evidence, or from mere conjecture as to the truth of one of two or more equally probable or possible theories having different legal results." Reynolds v. Fibre Co., 73 N.H. 126; Deschenes v. Railroad,69 N.H. 285; Carr v. Electric Co., 70 N.H. 308; Gahagan v. Railroad,70 N.H. 441; Horan v. Byrnes. 70 N.H. 531; Dame v. Car Works, 71 N.H. 407; Boucher v. Railroad, 76 N.H. 91. The following language of the court in Deschenes v. Railroad, supra, is particularly pertinent to this case: "The facts proved are equally consistent with a theory of the accident which would discharge the defendants as with one that would charge them; and in the absence of some evidence as to the fact, a judicial trial does not substitute an unfounded guess or conjecture for the legal proof which the law requires."
"The law demands proof, and not mere surmises." Bond v. Smith,113 N. Y. 378.
In Patton v. Railway, 179 U.S. 658, the court said: "Where the testimony leaves the matter uncertain and shows that any one of half a dozen things may have brought about the injury, for some of which the employer is responsible and for some of which he is not, it is not for the jury to guess between these half a dozen causes and find that the negligence of the employer was the real cause, when there is no satisfactory foundation in the testimony for that conclusion."
Moran v. Mulligan, 110 N. Y. App. Div. 208, is a case very similar to the one at bar. There the injury was caused by a knife flying from a molding machine. The court states: "The defendant's obligation to him [the plaintiff] was to see to it that the machine was reasonably safe, and there is no proof that he did not perform his duty in this respect. The fact that the bolt broke is not, in and of itself, sufficient evidence to sustain a finding of negligence that the defendant had not performed his duty. . . . Before negligence could be predicated upon the breaking of the bolt, plaintiff was bound to prove that it was defective or out of repair, and *Page 487 that an inspection before it broke would have disclosed the defect and the same could have been remedied. . . . Here there is no such proof." In the above case there was evidence that the breaking of a bolt caused the knife to fly from the molding machine. Here the absence of evidence is still more pronounced, for there is nothing to show what caused the arbor to leave the box. The decision of this vital fact is left to the imagination.
The plaintiff invokes the doctrine of res ipsa loquitur in his behalf and cites cases in other jurisdictions to prove that it should be applied in this case. In the cited cases, however, there was some evidence showing what the defect or negligence was that caused the accident. The nonsuit was properly granted. The result makes it unnecessary to consider the other questions discussed.
Exceptions overruled.
All concurred.