US 4,288,320 A · Vibrating screen with screen deck unclogging mechanism

Abstract

A plurality of weighted springy arms are formed integral with, and so as to extend laterally, to one or both sides of, a resilient mounting strip that is disposed beneath, and in contact with, the lower surface of the screen deck of a vibrating screen. The intended vibrating action of the vibrating screen induces an oscillating movement of the weighted springy arms to effect a rapping action of the weighted ends of the arms against the undersurface of the screen deck to loosen material which may have lodged in or plugged the screen openings and to unclog same. The resilient strips disposed on the extreme sides of the screen need only have weighted springy arms on the side thereof towards the central portion of the screen deck if space on the other side of the strip does not permit proper disposition and action of such an arm; while the strips disposed in the central section of the vibrating screen have arms extending from both sides of the resilient strip. The springy arms, are either cast in suitable rubber or plastic; with either integral weighted ends or with apertures disposed at their ends to receive suitably sized weights, formed from metal or other material of appropriate weight characteristics. Alternatively the arms may be cast about a springy metal leaf to impart appropriate and desired spring characteristics to the arm to facilitate the coaction of the arm and screen deck and unclogging of the screen apertures.

Claims34

Dependent claims

A screen deck unclogging mechanism;

comprising:
(a) mounting means formed to be supported beneath and to aid in the support of a screen deck when disposed in proximity to the screen deck;
(b) arm means formed integral with and extending laterally to at least one side of said mounting means and so as to have a free end spaced from said mounting means;
(c) weight means disposed at said free end of said arm means;
(d) said arm means including an integrally formed springy section disposed between said mounting means and said free end;
and
(e) the coaction between said weight means and said springy section of said arm means being such that when said mounting means is disposed beneath and in proximity to a screen deck and the screen deck is vibrated said weight means will rap against the underside of the screen deck to loosen material which may be lodged in the openings of the screen deck.

4 more elements

Dependencies are inferred from the claim text.

Vibrating screen with screen deck unclogging mechanism

Life of this patent

Vibrating screen with screen deck unclogging mechanism

Life of this patent

Abstract

Claims34