Did You Know...
...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 7104109 | Double-cavity heading die A cold or hot-forging heading die used in metalworking to form a “head” on the end of a metal rod is configured to provide two heading cavities formed in opposite ends of the carbide insert. The heading die of the invention comprises a hardened steel ring with a... | 09/12/2006 |
| 7090585 | Nail manufacturing tool holder having a quick change mechanism A clamping jaw for gripping wire stock used in nail production machines includes a quick change system that allows efficient replacement of a removable tool insert. The clamping jaw includes a main body that is partially split so as to define a gap between first and... | 08/15/2006 |
| 7004846 | Wear resistant nail manufacturing tool inserts A clamping jaw assembly and cutter assembly employed in machinery used to manufacture nails, screws, rivets, and similar objects starting with wire material. The invention includes a groove design having a smooth wave that reduces the wear rate of the groove improvi... | 02/28/2006 |
| 6786828 | Method of fastening a tool in a tool holder The present invention is for a method of fastening a tool holder. The tool (2) has a front side (6) shaped for use in cold forming of metal wire into nails, screws, etc. The tool holder (4) has a recess (8) shaped for receiving the tool (... | 09/07/2004 |
| 6780116 | Wear resistant nail manufacturing tool inserts A clamping jaw assembly and cutter assembly employed in machinery used to manufacture nails, screws, rivets, and similar objects starting with wire material. The invention includes a groove design having a smooth wave that reduces the wear rate of the groove improvi... | 08/24/2004 |
| 6676528 | Tool for the manufacture of an offset head nail and a use of said tool The present invention relates to a tool for the manufacture of an offset head nail, said nail comprising a shank and a head, said head being placed with its center being offset to the center of the shank, wherein said tool is one of a set of at least two ... | 01/13/2004 |
| 6066048 | Punch and die for producing connector plates A blade punch for forming teeth in a connector plate, the blade punch comprising an elongated blade having a metal working tip at one end and a shank at the other end. The blade has an elongated cross-section defined by opposing parallel spaced planar sid... | 05/23/2000 |
| 4748708 | Spike harrow tooth and method of manufacture A spike harrow tooth is fabricated by cold forming a metal blank which is provided from appropriate bar stock, the blank having a length for a single harrow tooth. The blank is placed in a first press, oriented with opposite edges of the square configurat... | 06/07/1988 |
