(19)
(11) EP 0 972 435 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.02.2000 Bulletin 2000/05

(43) Date of publication A2:
19.01.2000 Bulletin 2000/03

(21) Application number: 99303653.2

(22) Date of filing: 11.05.1999
(51) International Patent Classification (IPC)7: A01B 1/00, B07B 1/24
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 13.05.1998 GB 9810097

(71) Applicant: Hartley Industries Limited
Sheffield S11 9UZ (GB)

(72) Inventor:
  • Yates, Adam John
    Cramlington, Northumberland NE23 9DH (GB)

(74) Representative: Long, Edward Anthony et al
Hulse & Co, St. James House, 8th Floor, Vicar Lane
Sheffield S1 2EX
Sheffield S1 2EX (GB)

   


(54) Soil sifting device


(57) A soil sifter, e.g. a soil sifting device, has a body (figure 1) which is an inclined mesh drum (A), with open end upper most which is loaded with garden material to be sifted. The bottom of the drum is closed except for a helical labyrinth (figure 2). On rotating the drum in one direction the material is agitated and separated through the mesh rolling up and over the step shown in the helical back plate (B) (figure 4). Sifted soil then falls to a barrow or container below the drum (A). Larger debris is expelled from the bottom of (A) when the rotation is reversed. Debris falls through the labyrinth formed by the helical back plate (B)(figure 1,2,3,4).
The inclined drum (A) is supported by a portable frame (D), to which is attached the motor housing or crank handle (C).






Search report