Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 3990338 | Laminated saw blade The present invention relates to a method in the production of rotatable tools, such as saw blades or similar, comprising at least two preferably metallic discs interconnected by means of glue, solder or any other binding means or adhesive wherein spacing... | 11/09/1976 |
| 3990290 | Method and apparatus for forming saw chain cutter links Disclosed herein is a method of forming a cutting link from a generally planar cutting blank, and an apparatus capable of performance in accordance with the method and comprising a stationary die part, means including a first die part movable relative to ... | 11/09/1976 |
| 3988955 | Coated steel product and process of producing the same A coated steel product, namely, a cutting instrument such as a band saw blade, in which the body of the blade is of steel, the tooth tip is of impulse hardened steel and the tip is covered with a coating of titanium carbide or refractory metal carbide, th... | 11/02/1976 |
| 3964348 | Method and machine for straightening and tensioning saw blades A method and machine for hammering circular saw blades automatically, to correct uneven distributions of residual stresses, and distortions of the blade surfaces from true planes, so that the blades will run true. This operation has previously only been p... | 06/22/1976 |
| 3964349 | Method and apparatus for grinding the teeth of a circular saw to an improved contour A cup-shaped grinding wheel having an abrasive inner rim is brought into grinding contact with a tooth of a circular saw. The angle of attack of the grinding wheel is such that it imparts a second surface to the face of the saw tooth. The second generated... | 06/22/1976 |
| 3953999 | Method and apparatus for forming a saw chain cutter link Disclosed herein is a method and apparatus for forming a saw chain cutting link blank including a link portion, a shank portion extending from the link portion, and a toe portion extending from the shank portion, into a saw chain cutting link wherein the ... | 05/04/1976 |
| 3930426 | Method of making a saw blade In the manufacture of saw blades a metal block is first produced, having a central portion consisting of cutting tool steel. The block is now flattened to form a sheet in which the cutting tool steel forms a central strip. The sheet is now divided to form... | 01/06/1976 |
