SU53499A1 - Copy pencil - Google Patents

Description

The present invention concerns copying pencils and consists in the fact that in order to communicate a vibrating movement with a pencil while working with a pencil, the latter is fixed on a spring-loaded core of a solenoid fed by alternating or intermittent direct current.

The advantage of the proposed copying pencil over the known ones is that there is no need to press on the pencil when making copies.

The drawing schematically shows the proposed pencil.

The proposed copy pencil consists of a solenoid coil 7 attached to the handle 2. The iron core 3 of the solenoid, pressed upward by the coil spring 4, enters the pocket .5 of the handle. The rise of the core 3 is limited by the rod 6. As the AC solenoid pulses pass through the low-voltage and low-frequency AC pulses or, even better, intermittent direct current (for example, from a battery through an interrupter), the core 3 oscillates (vibrates). To the core 3 at the bottom, a rod is fastened with a non-magnetic substance, ending at the bottom with either a simple tip or a device for placing graphite, as in pocket pencils. A sleeve 8 is fastened to the lower part of the coil / solenoid; there are two cavities inside: the upper one to place the rod 6 and the lugs between which it oscillates and the lower one to accommodate the spring 4 reinforced with its ends "rod 7 and to the sleeve 8. On the sleeve S is screwed a hollow tip 9 with a hole in the middle for the passage when operating the vibrating rod 7, and the tip 9 during operation remains always in contact with the drawing or sketch that is copied. Pulses of electric current are fed into the solenoid from the current source through a two-core cord Yu.

For the proposed work, a pencil is put on the tablet several sheets of thin writing paper laid with copy paper and bypassing the sketch (or drawing) laid on top from which a copy is to be taken. If, at the same time as the copies, it is also necessary to receive a transmitted sketch, then the bar / should

be provided at its end with graphite, as indicated above.

The subject matter of the invention.

A copy pencil, characterized in that, for the purpose of communicating

while working with a pencil writing oscillatory motion tip, the writing tip is mounted on a spring-loaded solenoid core, fed by alternating or intermittent direct current.