Paper trimmers
OwnerDonald MacDougal Paterson, deceased, by Alexander Robertson Brackenridge, executorinventors
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Abstract
A paper trimmer is described comprising a base board and a fixed blade set in one edge of the board, the improvement comprising a guide rail mounted above and closely spaced from the cutter blade and a carriage mounted on the guide rail, the carriage containing a cutter wheel abutting the fixed blade and adapted to be turned, as the carriage is slid on the guide, by engagement of a friction drive wheel coaxial with the cutter wheel on the upper surface of the guide rail.
Claims4
In a paper trimmer comprising a base board and a fixed cutter blade set in one edge of the board, the improvement comprising a guide rail mounted above and closely spaced from the cutter blade and a carriage mounted on the guide rail, the carriage containing a cutter wheel abutting the fixed blade and adapted to be turned, as the carriage is slid on the guide, by engagement of a friction drive wheel, coupled to the cutter wheel, with the upper surface of the guide rail, said guide rail including means for maintaining the axis of rotation of the cutter wheel at an acute angle relative to the plane of said board.
In a paper trimmer comprising a base board and fixed cutter blade set in one edge of the board, a guide rail mounted above and closely spaced from the cutter blade and a carriage mounted on the guide rail, the carriage containing an assembly of a cutter wheel coupled to a friction drive wheel, the cutter wheel abutting the fixed blade and adapted to be turned, as the carriage is slid on the guide, by engagement of the friction drive wheel with the upper surface of the guide rail, and means maintained by said carriage and acting, together with said guide rail, on said assembly for angularly displacing said assembly to a position, dependent upon the direction of movement of said carriage on said guide, in which the leading edge of the cutter wheel is in contact with the cutter blade and the trailing edge of the cutter wheel is spaced from the cutter blade.
Dependencies are inferred from the claim text.