US 3677550 A
Each piece in a set of chessmen, other than the kings, has a uniform cross-sectional shape which is linearly symbolic of its permitted mobility on a chessboard.
Description (OCR text may contain errors)
United States Patent Mathers [451 July 18, 1972 [541 CHESSMEN  References cm 7 A] he UNITED STATES PATENTS 72 I t R nald e nde M8! 4 N hall 1 Glas 3 g 3pm 13207323 4/1967 Hanna et a1 ..D34/5 g n217,479 5/1970 Odette ....273/137 R ux 2 i o 2 1970 Dl70,489 9/1953 Wright ..273/ 137 R X [21 1 APPL No; 83,887 FOREIGN PATENTS OR APPLICATIONS 472,387 2/1929 Germany ..273/l 37  Foreign Appli ation Pri rit D t Primary Examiner-Delbert B. Lowe Attorney-Young and Thompson Dec. 1 l, 1969 Great Britain ..60,43l/69  ABSTRACT US. Cl. Each iece in a set of chessmen, other than the kings, has a IIIL A 3 3/02 uniform cross-sectional shape which is linearly symbolic of its  Field of Search ..273/ l 37 permitted mobility on a chessboard.
1 Claim, 6 Drawing Figures Patented July 18, 1972 3,677,550
PAWN I Inventor A M Aw 14M47flf3 A Norneys CIIESSMEN In accordance with the present invention, each piece, other than the kings, of a set of chessmen has a uniform cross-sectional shape which is linearly symbolic of its permitted directional mobility on a chessboard.
A set of chessmen in accordance with the present invention is characterized in that each piece except the king is linearly symbolic or representational through its cross-sectional shape, of its permitted directional mobility on a chessboard.
Chessmen in accordance with the invention may be made in any suitable material, and a preferred method of manufacture is by extrusion in plastics material or metal. Suitable plastics material are polyvinyl chloride (P.V.C) and Perspex.
An embodiment of the invention will now be described, by way of example, with reference to the accompanying drawing in which the six different pieces of a set of chessmen are shown in isometric views. In the drawing;
FIG. 1 shows a queen,
FIG. 2 a rook or castle,
FIG. 3 a king,
FIG. 4 a bishop,
FIG. 5 a knight and FIG. 6 a pawn.
The pieces or men shown in the drawing are extrusions of a suitable plastics material such as P.V.C. or Perspex and, as can be seen, the queen (FIG. 1) is shaped in cross-section to indicate that it can be moved universally on the chequered board on which the game of chess is played. The rook (FIG. 2) is shaped to indicate that it can be moved in a straight line forwards, backwards or laterally over any number of unoccupied squares, and the bishop (FIG. 4) is shaped to indicate that it can be moved diagonally over any number of unoccupied squares. The complex movements permitted to the knight (FIG. 5) are represented by a Y-shape, and the V-shape of the pawn (FIG. 6) is indicative of the two single-square diagonal movements available to this piece in capturing an opposing piece. The closed continuous surround of the king is symbolic of its unique importance and of the locus of the points to which it can move, its comparative immobility being inherent in the radially static symmetrical configuration. The chessmen may be of any convenient height, for example three-fourths to seven-eighths of an inch or thereabouts.
l. A set of chess pieces consisting of one king, one queen, two rooks, two bishops, two knights and eight pawns, wherein the queen, the rooks, and the bishops have the uniform crosssectional shapes shown in FIGS. 1, 2 and 4, respectively, of the drawing.