Acra-plant, Inc.

Other

William A Bell

Robert A Williams

Replaceable tillage point

Replaceable deep tillage point

The point is adapted to fit onto the forwardly projecting mounting wedge of a tillage shank and has a downwardly and forwardly inclined, elongated crown provided with a transverse, sharpened tip at its lower front end. An underslung transverse wall looped under the crown at the front end of the point defines a rearwardly opening socket that matingly receives the apex of the mounting wedge of the shank, and depending sidewalls on the crown adjacent its opposite lateral edges rearwardly of the underslung wall serve to present a protective trough on the underside of the crown that matingly receives the upper surface of the mounting wedge so as to protectively cover otherwise exposed side portions of the wedge and thus shield such areas from exposure of abrasive soils. Two alternate embodiments are disclosed, one of which has lateral side edges of the crown intersecting cleanly with upright surface of the underslung wall and the sidewalls, and the other of which has side edge of the crown overhanging such structures and provided with a certain vertical thickness dimension.

Deep ripper point

An attachment for permitting the focus of a microscope while operating the microscope stage may be provided with means including a fastener engagable with the focusing control of the microscope and providing an extended surface to permit simultaneous and one-handed operation of the microscope focusing control and the microscope stage by an operator.

Microscope remote control focus attachment

A holder for setting a group of tiles on a receiving surface has a base plate provided with permanent magnets dispersed over its surface to hold an array of magnetically attractable tiles. Pusher pins slide through the plate to push tiles therefrom. In an alternate form the plate is made of or incorporates magnetically attractable material for holding tiles having permanent magnets therein.

Growing community of inventors

Garden City, KS, United States of America

William A Bell