A method of making blocks with internally disposed magnets. Pockets for the magnets are machined into a non-extrudable material such as wood. Strong permanent magnets are disposed in the pockets to cause the faces of the block to exhibit a desired polarity magnetic field. The pockets are then sealed to permanently retain the magnets. The exterior shape of the block may be formed either prior to or subsequent to machining and sealing of the pockets.

Magnetic blocks and method of making magnetic blocks

Permanent magnet display board

A signage system includes an alpha-numeric character with angled front walls defining a peaked internal cavity and having perimeter flanges extending along edges of the front walls. A mount plate fits into and is hidden by the character. Connectors releasably attach the character to the mount plate. Features on the mount plate and character inter-engage to center and align the character on the mount plate. The connectors can be snap-attach, hook-and-loop, or magnetic. Alternatively, adhesive can be used to attachment.

Signage system with hidden attachment system

An educational aid, comprising a figure representing an animate object A plurality of first enhancing means are provided which are adapted to attach magnetically to the figure One surface of the first enhancing means bears representation of at least one teach object A plurality of second enhancing means is provided, which are adapted to magnetically attach to the figure, wherein the second enhancing means relates to a feature of the teaching object

Magnetic educational aid and teaching method

This invention relates to a marking device for geographical maps having a backing of magnetIsable metal, such as sheet iron, on which the marking devices are held by magnetic force. Displays, educational means, letterings, chess figures, and the like, held in position on a magnetisable iron...

Magnetic marker for maps

This application is a continuation in part of my pending application, Serial Number 101,847, filed September 21, 1936 for Magnetic display signs. This invention relates generally to magnetic display devices and method of making same and which display devices or signs are adapted for advertising...

John H Scharf

Papers

Magnetic display device and method of making same