Anti-snap device for drafting board tilting mechanism

Details Anti-snap device for drafting board tilting mechanism Anti-snap device for drafting board tilting mechanism

A - Human Necessities

47

B

311/14

A47B 27/06 (2006.01)

Patent

CA 1219626

ANTI-SNAP DEVICE OR DRAFTING BOARD TILTING MECHANISM ABSTRACT OF THE DISCLOSURE A drafting table having spring-balanced lifting and tilting movement features is provided with an anti-snap device which prevents the table top from tilting so quickly to the full-vertical position that it hits its stops and rocks the entire table over. The anti-snap device comprises a flexible strap which is wrapped about and fixed to cylin- dric members on which the table top lifts and tilts. The flexible strap becomes tight as the table top reaches its fully vertical position, but tightening of the strap is resisted by the lilt springs, which are pulled to one side by the strap. Resistance to the tightening of the strap requires more force to tilt the top to its full vertical position, increasingly slowing the tilting movement near the end of tilting travel.

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