Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1977-12-05
1979-06-26
Envall, Jr., R. N.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
13 22, 219408, 219409, 219494, 219553, 252516, 338317, F27B 514, F27D 1102
Patent
active
041594150
ABSTRACT:
A slot furnace for heating steel to forging temperatures includes a housing lined with refractory material and a refractory hearth all defining a chamber in the housing for receiving and heating forging stock. A slot is located at the front of the housing adjacent the hearth in communication with the chamber through which forging stock is inserted and withdrawn. Electrical heating elements are provided at either side of the chamber inwardly of the side walls of the chamber. The ceiling that defines the top of the chamber protrudes inwardly between the elements and above the slot. Means are provided for connecting the heating elements to an electrical power source. A temperature sensor is provided in the chamber adjacent the hearth and means connected to the sensor are provided for controlling the electrical power applied to the elements in response to the sensor.
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Envall, Jr. R. N.
Klein Tools Inc.
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