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...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 |
| 4364452 | Pulse liquid feeder system of the type used in lubrications systems and the like having broken line and flow rate detection Each feeder cylinder, in addition to opposite end feeder chambers, had intermediate chambers formed in the piston at opposite sides of the centerline thereof alternately in fluid communication with the feeder chambers of another of the feeder cylinders. A... | 12/21/1982 |
| 4249410 | Die press having selectively variable die access clearance A press has at least one reciprocal ram securing a die movable to and from an opposing die, the ram normally spacing the dies apart with a predetermined normal clearance. The die is retained in the ram assembly with at least one tensioned longitudinal bol... | 02/10/1981 |
| 4224819 | Internal gaseous fluid stripper for can bodymakers and the like A reciprocal ram at commencement of a forward strokes engages a cup-shaped article carrying it through metal working dies and against a doming die at reversal into a rearward stroke immediately followed by stripping of the article from the ram. The ram ha... | 09/30/1980 |
| 4223544 | Die lubricant nozzle for use in can bodymakers and the like A reciprocal ram carries a metallic cup on an end thereof axially through a die pack opening and a die ring thereof in a working metal forming stroke, the cup is stripped therefrom and the ram moves reversely through the die ring in a return stroke. An an... | 09/23/1980 |
| 4173138 | Can bodymaker having improved ram support and drive A horizontally reciprocal ram is movably supported on a can bodymaker for forward and rearward movement of a ram forward end through a die assembly by stationary, spaced, hydrostatic oil bearing sleeves located rearwardly of the die assembly thereby isola... | 11/06/1979 |
| 4164860 | Internal gaseous fluid stripper for can bodymakers and the like A reciprocal ram at commencement of a forward stroke engages a cup-shaped article carrying it through metal working dies and against a doming die at reversal into a rearward stroke immediately followed by stripping of the article from the ram. The ram has... | 08/21/1979 |
| 4091925 | Snag resistant vented flower sleeve A preferably plastic film flower sleeve has side edge heat sealed front and back panels tapering inwardly in downward extension providing upper and lower open ends. Each panel has a centralized nonperforated area which increases progressively in transvers... | 05/30/1978 |
| 4075963 | Skeleton discharge mechanism for use with cupmaker blank and draw presses and the like The skeleton discharge mechanism receives the leading edge portion of scrap skeleton sheets one at a time from a press at an entrance portion of a support surface exactly positioned by the press relative to a pick-up station and transversely spaced pairs ... | 02/28/1978 |
| 4047550 | Packaging wrapper A packaging wrapper having a stretchable net-like wrapper member conforming to a hollow, substantially sheath-like configuration having an article receiving opening bounded by an edge of the member to which is secured an elastic cord for yieldably contrac... | 09/13/1977 |
| 3931738 | Device for monitoring fluid pressure in mechanisms such as hydrostatic fluid bearings Pressurized operating fluid, such as oil for hydrostatic fluid bearings, is directed into a chamber against a plunger urging the plunger into a first position. A monitoring pressure force slightly less than the force of the operating fluid when the operat... | 01/13/1976 |
