ClipArt ETC
"A press or stamp bearing dies on its jaws, or a die and a bed, for imprinting or embossing any device upon paper or a plastic material, as lead. It is much used to form the seals of seal-locks, and may be a kind of heavy pincers. a and a1, dies; b (dotted outline), bar sliding in guide c; d (dotted outline), abutment for coiled spring e; f, lever with cam g at the bottom. The lever moved in the direction in dicated by the arrow forces a down upon a1; when it is released the spring reverses the motion." —Whitney, 1889

Seal Press

"A press or stamp bearing dies on its jaws, or a die and a bed, for imprinting or embossing any device…