https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=84424&pn=820,519 Tool-Grinding Machine Patentee: John G. Pool - Lynn, Essex County MA Granted:1906-05-15
Assigned to National Bung Mfg. Co. - Portland, Cumberland County ME

Abstract: My invention relates more especially to the grinding of a cutting-tool such as is described in an application. for United States Letters Patent, Serial No. 252,320, filed March 27, 1905,* by Edward E. Elder and myself as joint inventors for an improvement in plug-cutting machines, in which application there is shown a hollow cylindrical cutting - tool having advancing cutting points with retreating cutting-surfaces forming two V-like edges. To grind such a tool with a rotary grinder, it is desirable that the tool and grinder shall have such a movement with relation to each other that the surfaces to be ground shall be continuously presented thereto. To this end I have shown in the present embodiment of my invention a means for rotation, the tool and also a means for giving it a reciprocating movement parallel with its axis in order that the V-shaped edges may be properly ground. With these features are combined means for automatically feeding the grinder and the tool with relation to each other, so as to keep them in operative position. There is also provided means for adjusting the machine to grind tools of different diameters and having differently-shaped cutting edges from those shown that is, tools in which the distance from the tip of the point to the bottom of the V varies from o to that shown-that is, from a straight edge to a V-shaped edge even deeper than that shown. These and other novel details of construction will be explained in the following specification. Moreover, I have shown my invention embodied in a machine adapted to grind a cylindrical tool; but it will be apparent that it or certain of its features may be adapted to grind tools having a different cross-section. Claim: In a machine for grinding a rounding-tool provided with a serrated or V-shaped cutting edge, a continuously rotary toolholder for grasping and holding the said tool by the noncutting end or edge thereof, a rotary grinder and means for reciprocating said grinder and toolholder with relation to one another whereby the grinder may continuously follow the toothed or serrated edge of said tool as it is turned by the toolholder.
This is one of 83,722 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=24774&pn=6,034X Protractor Patentee: John Pool - Easton, Fairfield County MA Granted:1830-06-16
Manufactured by J. & H. M. Pool - Easton, Fairfield County MA

Most of the patents prior to 1836 were lost in the Dec. 1836 fire. Only about 2,000 of the almost 10,000 documents were recovered. Little is known about this patent. There are no patent drawings available. This patent is in the database for reference only.
This is one of 83,722 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=7650&pn=465,664 Rule Patentee: Michael Hogarty - Salisbury CT Granted:1891-12-22
Manufactured by Acme Rule Co. - Salisbury CT

Laminated construction for rules. Specifically mentions ivory and the use of wooden core to overcome problems with bound ivory rules. Patent date seen on boxwood rules marked Chapin-Stephens (No 62) and H. Chapin's Son (No 14). However, the marked boxwood rules seen to date do not appear to use laminated construction and rightfully should not be marked. An ivory example was in one of the Brown Auctions. From the description: boxwood base with a thin veneer of ivory manufactured by the Acme Rule Co., and all known examples are marked "patent applied for." This is a twofold, six-inch caliper rule, fully bound in German silver. See the last two pictures.
This is one of 83,722 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=84423&pn=429,950 Wire Nail Machine Patentee: Henry E. Piggott - St. Louis MO Granted:1890-06-10
Manufactured by P. & B. Nail Machine Co. - St. Louis MO
Assigned to George R. Bispham - St. Louis MO

Abstract: Heretofore in wire-nail machines but one stroke of the heading-hammer could be made with one whole revolution of the main shaft of the machine, which placed a considerable limit upon the capacity of same, while by my improved construction and cooperation of devices I embody, literally speaking, two machines in a single one, as will now be described. Before proceeding further, however, there is one more point of advantage possessed by an improved machine constructed after my invention, and that is, all strain heretofore throw in upon the main shaft during the heading process is removed. Claim: A wire-nail machine consisting of a suitable frame or bed-plate, journals secured to the same, within which the triphammer mechanism is mounted, the main shaft geared to a vertical shaft, and which has a tripping-cam mounted upon the said vertical shaft, and a vibrating triphammer operated by said tripping-cam.
This is one of 83,722 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=84422&pn=243,555 Tire Upsetter Patentee: Benjamin S. Haskell - Cumberland, Providence County RI Granted:1881-06-28
Assigned to Wiley & Russell Mfg. Co. - Deerfield, Franklin County MA

Abstract: My invention relates to that class of tire- upsetters, which a clamping mechanism is combined with an anvil or plate upon which the tire may be hammered; and the object thereof is to furnish a compact and portable mechanism, convenient and effective in use and simple in construction, which may be manufactured at a much less cost than the machines now in use. To this end may invention consists, primarily, in combining with an upright anvil of peculiar construction, the top of which is made concave for the reception of the part of the tire to be upset, an upright clamping device provided with a slot for the reception of a vertical spiral spring. Claim: The combination of the upright standard A, the upright sliding bar B, having projecting arms or jaws i, the spring D, arranged within the slot C, the lever E, and the collars H, all operating together.
This is one of 83,722 patents currently in the database at datamp.org

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