Evarts & Merrihew - Assigned Patents

Manufacturers Index - Evarts & Merrihew

Evarts & Merrihew
Chicago, IL, U.S.A.
Manufacturer Class: Wood Working Machinery

Patents

This page contains information on patents issued to this manufacturer.

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Patent Number	Date	Title	Name	City	Description
2,485	Mar. 09, 1842	Construction of rotary engines to be propelled by either water or steam	Harry H. Evarts	Mount Morris, NY
		Construction of rotary engines to be propelled by either water or steam	Peckham H. Green	Mount Morris, NY
3,303	Oct. 12, 1843	Straw-cutter	Harry H. Evarts	Mount Morris, NY	The inventor also patented a very successful shingle mill plus some stave machinery.
11,858	Oct. 31, 1854	Shingle machine	Harry H. Evarts	Chicago, IL	The patent was extended for seven years. A few years into the extension, "Application for Reissue, in two divisions, filed January 8, 1874." According to the "Decisions of the Commissioner of Patents" for 1874, the reissue was rejected. There is, however, an AI (Additional Improvements) patent, for making staves. This patent was litigated in H. H. Evarts et al. vs. David M. Ford, in front of Judge J. Blodgett of the Northern District Court of Illinois, in November 1873. "The third claim of the patent granted H. H. Evarts, October 1, 1854, for improvement in shingle-machines, which is, 'presenting the sides of the fibers of the wood to the action of the saws in the sawing of shingles or equivalent articles, for the purpose of giving them smoother surfaces than can be produced by the usual mode of sawing,' if construed literally, asserts a right to a result, and cannot be sustained. Construed as a claim for the mechanism by which the result is effected, it may be sustained. A patent for a machine in which a shingle-bolt is fastened automatically by dogged teeth upon a rotating carriage, which presents it sidewise to the saw, is not infringed by a machine in which the bolt is by hand fastened to a reciprocating carriage, and by hand shoved to the saw and withdrawn. Evarts having failed to patent his hand-machine, made while experimenting and before taking out his patent on his perfected machine, and having failed to mention or describe it in the specification of the patent he did take out, is held to have abandoned it to the public. The opinion of the Commissioner of Patents, granting an extension, is entitled to great weight on the question of novelty." Quoting from "Reports of Cases Arising Upon Letters Patent for Invention" by Samuel Sparks Fisher: "It is an ingenious and complete machine for sawing shingles from the block. A block, T (in the engraving represented in broken lines), is placed on each table, P, P'; is seized by dogs, actuated by H, and teeth t' and carried by the saws A, as the cogged rim F revolves. The tables P, P' are so inclined in respect to saws as to give the required taper to the shingle. The lever cams H are rocked on fulcrums in the rim D, by cams n', n', so that two at a time of the dogs i shall pierce the block as it arrives near the saw, or at T, by which time the other two dogs i, which hold the block thus far, are withdrawn; thus but two dogs, together with the teeth t', carry a block around. It must be observed that, to give the proper taper, the beds P, P' slope inward and downward from the saws the angle required. As the block always bears against this bed as it meets the saws, the taper necessarily results. The block is sawed alternately from end to end, giving the thin and thick ends of shingles, alternately from each end of the block. As soon as one shingle is cleared, it drops, and the dogs i, now holding the block, are withdrawn (by cams n', n'), and the block drops a distance equal to the thickness of the shingle just formed on the bed H, and is in the exact position to meet the next saw, just before clearing which, two dogs, i, quickly clamp it, and hold it until past this saw. Thus it may be seen that a block placed on one of the tables, and the machinery being in motion, the machine will convert it into shingles without further manual assistance."
19,692	Mar. 23, 1858	Machine for sawing staves	Harry H. Evarts	Chicago, IL
23,807	Apr. 26, 1859	Steam-valve	Harry H. Evarts	Chicago, IL	Of interest because the inventor also received several patents for woodworking machinery.
24,079	May. 17, 1859	Machine for sawing staves from the bolt	H. H. Evarts	Chicago, IL
AI268	Mar. 06, 1860	Improved machine for sawing staves from the bolt	Harry H. Evarts	Chicago, IL	Only the patent drawing is available, no specification. The assignment information comes from the 1860-03-17 issue of Scientific American, as does the following claim. "I claim the use of the rotating block carriage, as described, in combination with the saw, H, as shown and for the purposes set forth in the specification."
29,125	Jul. 10, 1860	Machine for sawing staves	Harry H. Evarts	Chicago, IL
100,132	Feb. 22, 1870	Improvement in the construction of chairs	Harry H. Evarts	Chicago, IL	Of interest because Evarts received several patents for woodworking machinery.
100,133	Feb. 22, 1870	Improved bedstead	Harry H. Evarts	Chicago, IL	Of interest because Evarts received several patents for woodworking machinery.
104,001	Jun. 07, 1870	Improvement in dovetailing-machine	Harry Hubbard Evarts	Chicago, IL
110,642	Jan. 03, 1871	Improvement in dovetailing-machines	Harry H. Evarts	Chicago, IL
111,830	Feb. 14, 1871	Improvement in traveling-trunks	Harry Hubbard Evarts	Chicago, IL	Of interest because inventor Evarts received several patents for woodworking machinery.
131,258	Sep. 10, 1872	Improvement in construction of trunks	Harry H. Evarts	Chicago, IL	Of interest because inventor Evarts also received several patents for woodworking machinery.
172,007	Jan. 11, 1876	Improvement in friction-joints for school-desks	Harry H. Evarts	Chicago, IL
174,447	Mar. 07, 1876	Improvement in shingle-machines	Moses Stewart	Dallas, TX	"The object of this invention is to improve the construction of the shingle-machine known as the 'Evarts Rotary Twelve-Block Shingle Machine,' in such a way as to prevent the blocks from jumping when the dogs strike them, and thus make the said machines more effective in operation." The Evarts machine referred to is possibly that shown in patent 11,858.
181,424	Aug. 22, 1876	Improvement in health-lifts	Harry H. Evarts	Chicago, IL	Of interest because the inventor also received several patents for woodworking machinery.