Fish processing machines

A device for controlling a tool of a fish processing machine in which fish are fed along a feed path, said device comprising

• control means for generating a signal to control said tool,
• a first sensing element pivotably mounted on said machine and positioned along said feed path for pivotal displacement in response to engagement with a fish fed along said feed path,
• a second sensing element operatively coupled to said control means for actuating the latter to generate said signal,
• carrier means movably mounted on said first sensing element, with said control means immovably mounted on said carrier means and said second sensing element movably mounted on said carrier means,
• said second sensing element being positioned to engage said fish downstream of said first sensing element for movement of said second sensing element relative to said control means in a direction to actuate said control means,
• actuating means for displacing said carrier means on said first sensing element in response to the pivotal displacement of said first sensing element and in a preset proportionality ratio to the extent of said pivotal displacement of said first sensing element, whereby to vary the position of said second sensing element relative to said first setting element in accordance with the size of the fish sensed by said first sensing element,
• and adjustment means to vary the setting of said proportionality ratio.