초록 ▼

A sieve box for a particulate sifter has a pan, a screen, and a number of screen and pan clearing devices. Each device has a first member with fingers engageable with the pan to remove particulates that accumulate on the pan and a second member with fingers adapted to engage the screen to clean the

A sieve box for a particulate sifter has a pan, a screen, and a number of screen and pan clearing devices. Each device has a first member with fingers engageable with the pan to remove particulates that accumulate on the pan and a second member with fingers adapted to engage the screen to clean the screen or particulates. The first and second members have cooperating structures that movably connect the structures to allow free combined lateral movement in the sieve box and independent relative rotational, vertical and wobble movements.

대표청구항 ▼

[ I claim:] [1.] A sieve box comprising: a frame having a plurality of first side members and a second side member, and a cross member secured to a pair of the first side members, said second side members being spaced from one of the first side members providing a coarse material discharge channel,

[ I claim:] [1.] A sieve box comprising: a frame having a plurality of first side members and a second side member, and a cross member secured to a pair of the first side members, said second side members being spaced from one of the first side members providing a coarse material discharge channel, a pan secured to the first side members and the cross member, a screen secured to the side members covering the area surrounded by the first side members and cross member, said screen being located above the pan, at least one of the first side members having an opening in communication with the chamber between the pan and screen to allow particulates to flow out of the chamber, and clearing means located in said chamber for clearing the screen and pan of particulates, said clearing means comprising a pan clearing member having a generally flat body, at least one hole having a vertical axis extended through said body, and downwardly directed first fingers joined to the body engageable with the pan for cleaning the pan of particulates, and a screen clearing member having upwardly directed second fingers located below the screen for clearing the screen of particulates, said screen clearing member having a downwardly directed post movably supported on the pan, said post extended through the hole in the body and having a cross section smaller than the cross section of said hole whereby the pan clearing member and screen clearing member are movably connected together to allow relative rotation of the members and relative vertical and wobble movements of the members to clear particulates from the pan and screen.