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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 4876795 | Cutter, in particular for a slat, especially of a venetian blind A novel cutter, in particular for a slat, especially of a venetian blind is disclosed. This cutter comprises a pair of modified scissors with a respective knife blade partially deflected. A torsional spring is provided for creating a return action on the ... | 10/31/1989 |
| 4807363 | Apparatus for trimming venetian blinds An apparatus for trimming venetian blind slats is provided wherein a hand-held housing carries a removable anvil and blade; the blade is adapted to slide across the anvil, thereby causing a shearing action. The cutting surface of either the anvil or the b... | 02/28/1989 |
| 4776096 | Scissors means particularly for cutting blind's slats The present disclosure is related to a scissors means which is particularly adopted to cut Venetian blind slats into standard sizes, and is characterized by its readiness and precision of operation.... | 10/11/1988 |
| 4729170 | Hand tool with perpendicular acting dies on pivoted handle set A punch tool provides two generally longitudinal handles joined by a transverse pivot pin that is carried in a resilient bushing. One of the handles defines a straight bore that houses a sliding punch die and further defines a support for a mating, statio... | 03/08/1988 |
| 4689884 | V-snip scissors Scissors for cutting a V shape have two parts which are pivotably coupled. The first part has a V-shaped cutting block with two cutting edges which meet at an apex. The second part has a pair of cutting blades with cutting edges which cooperate with the c... | 09/01/1987 |
| 4644649 | Apparatus for trimming reeds of musical instruments Apparatus and method for trimming a reed used in conjunction with a musical instrument includes a support structure and at least one cutting instrument that can be manually coupled to and removed from the support structure. When the cutting instrument is ... | 02/24/1987 |
| 4619046 | Pineapple eye extractor A tool (15) with pivoted handles (18 and 19) for operating jaws (16 and 17) provides a means for removing unwanted "eyes" (7) from pineapples (6) when such handles are squeezed to close the jaws around and under an eye (7a). A spring (11) exerts opening p... | 10/28/1986 |
| 4610086 | Drive notching tool A hand tool for sheet metal workers notches and soft-noses an end of a sheet metal drive in one operation, and saves time and prevents injuries as compared with use of tin snips to do the same job. Paired handles of the tool are held in one hand while, wi... | 09/09/1986 |
| 4602431 | Haircutting shears A pair of haircutting shears wherein first and second shear blades, associated at a pivot point, contain sinusoidally grooved cutting edges comprising a plurality of wave cycles thereon. The grooved cutting edges are separated from the pivot point by air ... | 07/29/1986 |
| 4543719 | Shear apparatus A shear attachment is provided with fixing means so that it can be replaceably mounted in place of a bucket on the end of an arm of an excavator, the attachment comprising a pair of co-operating shearing jaw members, one of which is attachable to the arm ... | 10/01/1985 |
| 4513502 | Beverage lid cutter A cutting apparatus is described for cutting an opening in beverage cup lids. This is accomplished by providing a housing, with a slot for orienting and maintaining the lid in a proper cutting position. While the lid is properly held, a cutting assembly m... | 04/30/1985 |
| 4446623 | Notching tool A notching tool for forming notches in ridge- or hip-capping for roofs, the notches being formed to match the profile of the roofing sheets. The tool has a base with a pair of spaced feet which engage the ribs on the roofing sheets to align the tool. A notchin... | 05/08/1984 |
| 4425710 | Roofing cap cutter A device is provided for cutting roofing caps efficiently and easily from standard asphalt or fiberglass roofing shingles. The device comprises a support base to hold a shingle, the support base being hinged to a top plate having cutting blades affixed th... | 01/17/1984 |
| 4327487 | Wood cutter A cutting tool includes a pair of pivotally connected handles extending through and defining a pair of coacting U-shaped cutting jaws. Each of the cutting jaws defines a cutting edge extending throughout the base and side legs of the U shape. The jaws hav... | 05/04/1982 |
| 4272888 | Parallel action cutting hand tool Cutting dies are mounted for parallel movement in a scissors-action handle assembly employing pivot pins mounted both forward and rearward of the pivot axis of the handles, and one of the engagement openings for a pivot pin in each die is longitudinally e... | 06/16/1981 |
| 4255857 | Selective conductor severing tool A tool for the selective severing of a conductor in a multi-conductor flat cable and preforming the remaining free end comprising a punch means with a first conductor relief slot and a die means with a second conductor relief slot such that when the die a... | 03/17/1981 |
| 4227305 | Hand tool for cutting blind strips and the like Manually operated tool, primarily a hand tool, for cutting strip elements, more especially, blind strips of Venetian blinds. The tool has cooperating blades. Associated with one of the blades is a feed guide particularly configurated to be adapted to the ... | 10/14/1980 |
| 4177664 | Combined blank forming and bending tool A tool for sheet metal or the like and for partially cutting blanks from a margin of a workpiece, such as a sheet metal pipe end, and simultaneously and accurately bending the partially cut blank at a substantially right angle to its original position in ... | 12/11/1979 |
| 4124937 | Improved notching shear for notching woven textile fabric or other flexible or pliable sheet material My invention relates to a hand operated notch cutting tool that will notch woven fabric, pliable or other thin material.... | 11/14/1978 |
| 4106195 | Hand tool for cutting and forming aesthetic ends on decorative molding A hand tool having a cutting blade to cut and form ends on decorative molding is provided with a movable guide for supporting the molding material at different positions with respect to the blade such that ends and insert pieces may be cut from the moldin... | 08/15/1978 |
| 4060892 | Cutter for semicylindrically curled paper A cutter, simple in construction but having good cutting quality and durability, for cutting paper in a semicylindrically curled state. With radii equal to or approximate to the radius of curvature of the paper to be cut, a stationary blade having a semic... | 12/06/1977 |
