In a feed drive apparatus wherein a moving element 27 is driven by drive legs 21, 22 having extension/contraction deforming parts 23 and shear deforming parts 24, sine wave drive voltages are respectively applied to the extension/contraction deforming parts 23 and shear deforming parts 24 of the drive legs 21, 22 in order to permit high speed operation, and make the average voltage effectively zero.

A feeder for feeding large wild animals. The feeder has an enclosure for holding feed. A reduced opening toward the bottom of the feeder allows the feed to pass therethrough. The feed enclosure is adapted to cooperate with a feed dispensing apparatus that controls the flow of feed from the reduced opening and is capable of intermittently and selectively dispensing feed by propelling the feed from the reduced opening away from the feeder and within the reach of the animals. A single post supports...

A vibration or shaking feeder combined with a drum which is rotated at high speed is disclosed. The vibration feeder includes a container having a helical ledge around the inner wall of the container for making articles in the container travel to rise up the helical ledge by vibratory motion of the container. The articles advanced up to the uppermost ledge are transferred to the outer drum rotated at high speed and fed to a next stage for further processing.

A self-cleaning feeder for particulate material, such as dry lime powder, utilizes a spaced coil helical spring rotating in an upright annular passage between a pair of pipes to convey the material from a stock pile source, such as a drum container supporting the feeder in upright position, to an outlet in controlled amounts. The coil spring projects into the stock pile and has a laterally extended tail or finger stirring or agitating the material to maintain it in contact with the spring. The i...

A gun is described having a feeder, for a gun bolt, accomodating two independent trains of ammunition, and having two sets of sprockets and articulated feed arms for positively advancing each round in sequence transversely onto the face of the gun bolt.

The present invention relates to an apparatus for feeding solid fuels in a space limited by a plane bottom plate, side walls and a pusher device arranged adjacent the bottom surface. A drive is located outside the walls and is attached to the pusher in order to obtain a reciprocating movement of the pusher. The invention is characterized in that the pusher comprises a number of pusher rods arranged substantially parallel with each other and substantially parallel with the bottom surface.

In order to improve the accuracy of spacing, direction and velocity, a feeder for feeding discrete objects one by one has a belt which circulates at a controlled speed. The belt carries a series of buckets formed by four flaps which are normally closed but can be opened by a cam adjacent the path of the buckets. The objects are inserted one by one in the buckets adjacent the top of their vertical descent, and are discharged when the flaps are opened. In this way, the buckets define the spacing a...

An ammunition feeder for a machinegun has two sets of in-feed sprockets which alternatively feed rounds to a shiftable tray having two alternative stripping stations, either of which may be alternatively disposed to cooperate with the bolt.

Method and apparatus are disclosed for feeding farm animals. The apparatus includes a movable feeding device mounted to a trolley which is in turn carried by a rail. The movable feeding device follows a path which includes a plurality of stalls, each of which has a farm animal therein. When the movable feeding device stops adjacent a stall, an animal is identified, and the dispensing of a pre-determined amount of food for that animal begins. If the animal moves its head away from the feeding bow...

In the context of a feeder, more especially a sheet feeder, comprising firstly a suction device which is placed over a stack of items to be fed, and has a separating devicre with at least one telescoping and preferably vertically reciprocable lifting suction holder, which when a sucker is covered over is able to be retracted against the action of a returning force by the action of vacuum present at such sucker, and secondly a conveyor device which has at least one reciprocating entraining suckin...