Metal detector for intake of field chopper

Details Metal detector for intake of field chopper Metal detector for intake of field chopper

1986-12-23

1988-07-19

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

56 102, 324241, 340551, 340684, A01D 7528, G01R 3312, G08B 2100

Patent

active

047587881

ABSTRACT:
An apparatus for detecting magnetically sensible objects in an object stream longitudinally passing a predetermined location, for instance at the intake end of the conveyor of a field chopper, has according to the invention a support at the location extending transversely adjacent the object stream and having a pair of transverse ends and a center therebetween and a magnet assembly on the support having a north pole directed from between one of the ends and the center of the support transversely of the support and of the stream into the crop stream and a south pole directed parallel to the north pole from between the other end and the center of the support. The assembly forms between its poles a magnetic field having lines of force extending mainly transversely through the stream. Respective north and south sensing coils at least partially surround the respective poles so that a magnetically sensible object perturbing the field will generate respective currents in the coils. Conductors connect the coils in series such that the currents generated therein by perturbation of the field by a magnetically sensible object are added together and a controller is connected to the coils for reacting, for instance by sounding or illuminating an alarm or by shutting down the conveyor drive, when the currents exceed a predetermined minimum.

REFERENCES:
patent: 3889249 (1925-06-01), Bennett, Jr. et al.
patent: 3964042 (1976-06-01), Garrott
patent: 3972156 (1976-08-01), Bennett, Jr. et al.
patent: 4290255 (1981-09-01), Martenas
patent: 4433528 (1984-02-01), Bohman
Wie Funktioniert der Metalldetektor?, by Werner Geuggel, Agratechnik International-Apr. 1983, pp. 17, 18, 19, 21.

Affiliated with

Also associated with

Rating

Metal detector for intake of field chopper does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Metal detector for intake of field chopper, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metal detector for intake of field chopper will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-599219