Appeal No. 1998-1298
Application 08/544,962
(Figs. 2 and 4 through 7). The bed-bars 2 are lifted by
lifting bars 5, while the pulling-out bars 3 are movable in
backward and forward directions.
The patent to Moser (Figs. 4 and 5) teaches a walking
beam conveyor for a furnace chamber. Stools 14 extend in rows
both crosswise and lengthwise within the furnace chamber.
Rails 16, mounted on the stools, constitute a bed of transport
rails for moving work lengthwise of the furnace chamber. Also
associated with each stool is a post 21 carrying a yoke 28
which supports rails 29, with the rails together constituting
a work lifting bed. Forward movement of the rail bed 16, when
the rail bed 29 is lowered, moves the work forwardly, and when
the rail bed 29 is elevated to lift the work off the rail bed
16, the rail bed 16 is free to return to its starting
position. After rail bed 29 redeposits the work upon the rail
bed 16, rail bed 16 can again move the work forwardly.
The Dreffein patent addresses a conveying and supporting
mechanism. A plurality of conveyor members or bars 15 (links
of I-section), mounted in parallel and spaced relation, are
5
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