Abstract: There is disclosed a peristaltic pump which comprises a flexible tube for the passage of a fluid having an inlet and an outlet and a roller assembly comprising a number of rollers and a rotatable support, the rollers being mounted on and extending substantially perpendicularly outward from the rotatable support and the tube being stretched over the roller assembly so that it extends substantially perpendicularly to the rollers and through substantially 360.degree. around the roller assembly and where the tube contacts a roller it is compressed against that roller, the arrangement being such that in use where the tube is compressed against a roller it is occluded and rotation of the roller assembly causes each roller to contact and thereby occlude successive parts of the tube forcing fluid contained in the tube and trapped between the occlusions to be moved along the tube from the inlet towards the outlet.

Abstract: An incubator for turning eggs is disclosed, which comprises:a housing for accommodating eggs to be hatched;a member (4) within the housing and capable of moving with respect to the housing;motive means for intermittently causing relative movement between the member (4) and the housing; andat least one elongate channel-defining element (10) having a longitudinally extending axis (11) and capable of contacting the member (4) in a manner such that, upon intermittent movement of the member (4), the element (1) is caused to undergo corresponding intermittent rotational movement about its own longitudinally extending axis (11) thereby causing rotation of any eggs (2) located within the element (10).

Abstract: An incubator is disclosed in which there is a support for supporting eggs, with a flexible screen intended to be positioned over the eggs when supported by the support. There is also provision for hot air to be passed over the screen so that heat is conducted downwardly through the screen to upper portions of the eggs. In addition, or as an alternative, there can be transverse dividers for dividing the eggs into rows on the support, with provision for relative movement on an intermittent basis between the support and the dividers so as to cause rotation of the eggs.