Summary

Samuel Blatchford Fond Du Lac County v. May — Opinion of the Court

As the witness Moulton says, locks and bolts upon doors are old, and to put a lock or bolt upon an angle door would not be invention. Nor is the combination of an angle door, with a lock of any kind, a patentable invention, even though the particular lock had not before been put upon an angle door. Moreover, the combination claimed in claim 1 is one of the angle door with the particular lock or bolt, I, that is, such lock or bolt as an integral part of the safe or box, J, with its drum, p, and connections, in which view the apparatus in the defendant's jail does not infringe claim 1.
Source: Wikisource

Samuel Blatchford Fond Du Lac County v. May — Opinion of the Court

So far as the grating is sought to be made an element in the combinations of claims 3 and 4, it is not an element of the mechanism. It is no part of the machine, and has no effect upon its operation. Nor is the apparatus a manufacture or a composition of matter. In the patent, the invention is called one of an 'improvement in the construction of prisons,' and in the specification it is called an invention of 'improvements in the construction and operation of prisons.' In Jacobs v.
Source: Wikisource

Samuel Blatchford Fond Du Lac County v. May — Opinion of the Court

Models of a jail constructed according to the patent, and of the defendant's jail, were introduced in evidence by the plaintiff, and identified as correct. A stipulation was then put in evidence, signed by the attorneys for the parties, to the effect that the device used by the defendant in its jail for fastening the doors had been in use therein since 1869.
Source: Wikisource

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