An E-field probe comprises one or more dipoles, each comprising plural, parallel, strings of discrete resistors mounted on a section of printed circuit board and connected electrically so that the parallel strings are twisted about each other for optimum orientation symmetry and minimum stray field pick-up. The values of the individual resistors are chosen so that the dipole is essentially a tapered resistance dipole, providing good performance over a very broad range of frequencies. A pair of d...

Transplanting apparatus for transplanting seedlings from a tray that has a plurality of seedling retaining cells into a prepared ground planting position, the apparatus having a tray holder, a seedling ejector for removing one or more seedlings from the seedling retaining cells, a seedling delivery conveyor for receiving a seedling ejected from the tray and delivering same via a travel path to a ground planting preparation device arranged to at least partly prepare the ground planting position, ...

A field construction for sports or other fields is disclosed which includes a substrate or other surface layer and also a filter layer having a pipe network (2,3). The pipe network (2,3) comprises numerous perforated multi-purpose pipes (3) to dry the field and to lead air through the field. In the filter layer (4), the proportion of fine material or material having a granular size of less than 0.06 mm is less than 5%; most advantageously the proportion is less than 1%, so that the filter layer ...

A trencher mountable on a vehicle such as a tractor, includes a substantially horizontal hollow stationary member positioned substantially perpendicular to the direction of travel of the vehicle, an extension member which is slidably receivable within the stationary member and a member for extending and retracting the extension member with respect to the stationary member. The trencher further includes a swiveling member pivotably attached to one end of the extension member with the swiveling me...

The present specification discloses apparatus for transplanting seedlings (24) from a tray (6) that has a plurality of seedling retaining cells (34), into a prepared ground planting position, the apparatus having tray holding means (1), seedling eject means (15, 16, 17) for removing one or more seedlings (24) from the seedling retaining cells (34), seedling delivery means (26, 27, 29) for receiving a seedling (24) ejected from the tray (6) and delivering same via a travel path to a ground planti...

A device for generating an inhomogeneous electrical field includes first and second electrodes. The first electrode may be a portion of a sphere, a cone, a paraboloid, a cylinder; a hollow sphere, a hollow cone, a hollow paraboloid, or a hollow cylinder. The second electrode may be a portion of a sphere, a cone, a paraboloid, a cylinder, a hollow sphere, a hollow cone, a hollow paraboloid or a hollow cylinder. The first and second electrodes are aligned to produce an inhomogeneous electric field...

A light weight field howitzer includes a barrel (101) which is supported by a cradle constructed from hollow members (119,119A) and which is pivotally mounted about a trunnion bearing (113) secured to a chassis (117). The trunnion bearing (113) lies on the barrel axis and is positioned beyond the limit of maximum recoil of the barrel. Front stabilizers and rear trail support legs are provided to spread the load of the howitzer and spades are rigidly secured to the chassis (117). The howitzer inc...

Improvements in or relating to field howitzers A light weight field howitzer includes a barrel which is supported by a cradle constructed from hollow members and which is pivotally mounted about a trunnion bearing secured to a chassis. The trunnion bearing lies on the barrel axis and is positioned beyond the limit of maximum recoil of the barrel. Front stabilisers and rear trail support legs are provided to spread the load of the howitzer and spades are rigidly secured to the chassis. The howitz...

An agricultural appliance, in particular a field sprayer, that includes a boom construction (1) with a central portion (20) which may, by means of a suspension device, be mounted on a support construction (40), such as a tool bar on a tractor or the like, which is located posteriorly of the boom construction (1). The suspension device includes a pivot (150) that allows for turning of the boom construction (1) about the axis of the pivot which extends substantially perpendicularly to the boom con...

A field apparatus for controlling a controlled element includes a diagnosis unit for diagnosing abnormality of the field apparatus and/or the controlled element and a bidirectional digital communication device to send a digital signal which shows a diagnosis result to outside and to receive a digital signal from outside in order to execute a control of the controlled element. Other predetermined functions are effected based on a command signal in the form of an analog signal received from outsid...