to the hottest water available in the reservoir the apparatus also includes unique combination of valve means and flow control means to effect reciprocation of the tray at given time intervals and a continuous addition of hot water to the reservoir during a complete pre heating cycle application_number US 38882673 A description an apparatus for warming refrigerated food products prior to cooking constructed in accordance with the present invention is illustrated in fig1 and includes a housing means which comprises a base cabinet 20 which supports a pre heat reservoir 22 which may be fixed to cabinet 20 in any suitable conventional manner cabinet 20 is preferably provided with castor wheels such as 24 to provide convenient mobility to the structure reservoir 22 includes a cylinder means 26 provided in the bottom surface a food tray 28 includes a downwardly extending pin 30 which is adapted to receive a piston means 23 product baskets 34 are adapted to hold a predetermined amount of the food product and are adapted to rest upon the surface of tray 28 with the handle portion 36 being at a height above the top of reservoir 22 to permit convenient handling of the baskets a plurality of valve means indicated generally at 38 are provided to control the flow of water into reservoir 22 to cooperate with a chamber and orifice to cause reciprocation of the cylinder 32 in piston 26 and to shut off the flow of water after a predetermined time cycle has occurred referring now specifically to fig2 and 3 a pair of water supply conducts 40 and 42 which are preferably connected.