Improvements in or relating to crushing machines

(19)

(11)

EP 0 826 421 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	10.06.1998 Bulletin 1998/24

(43)	Date of publication A2:
	04.03.1998 Bulletin 1998/10

(21)	Application number: 97306543.6

(22)	Date of filing: 27.08.1997

(51)	International Patent Classification (IPC)⁶: B02C 1/02

(84)	Designated Contracting States:
	AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV RO SI

(30)

Priority:

28.08.1996 GB 9617917

(71)	Applicant: Pratt, Gerald Cavan
	Ashby de la Zouch, Leicestershire LE65 2QB (GB)

(72)	Inventors:
	Pratt, Gerald Cavan Leicestershire LE65 2QB (GB) Hall, Christopher David Coalville, Leicestershire LE67 3LQ (GB) Phipps, Graham Thomas Henry Loughborough, Leicestershire LE11 3LU (GB)

(74)	Representative: Jones, Stephen Anthony et al
	E. N. Lewis & Taylor 144 New Walk Leicester LE1 7JA Leicester LE1 7JA (GB)

(54)	Improvements in or relating to crushing machines

(57) A jaw crusher comprises an oscillating jaw (2,3) having an operating setting D which is adjustable by means of a toggle device (7) connected to the oscillating jaw (2,3) by a freely supported toggle plate (5). The oscillating jaw (2,3) and the toggle device (7) are connected and held in tension by a tension rod assembly (9,10,11) and there are provided means for determining the tension applied to the tension rod assembly (9,10,11), comparing the measured tension with a pre-set value and adjusting the tension to the pre-set value.

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