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US 4,554,740 AGranted
Pantographs
OwnerDavid Gillinventor
Life of this patent
Estimating the term…
Abstract
The disclosure illustrates a pantograph comprising a pair of parallel guides slideably and pivotally mounted on a base support which is mounted to a table. A saddle supporting a stylus is mounted on one end of the guides and another saddle slideable on the guides mounts a tool such as a router. A series of parallel adjustable links interconnect the base, tool mounting saddle and stylus saddle, so that movement of the tool saddle is a predetermined scale of the stylus movement. The scale is set by the geometry of the links. The pantograph may also be used to make three dimensional reproductions of an object.
Claims15
A pantograph apparatus comprising:
- means for defining at least one elongated support guide;
- base means for at last pivotally supporting said support guide about a first axis perpendicular to a reference plane;
- first and second elements supported by said support guide means on one side of said base means for linear displacement along the longitudinal axis of said support guide means relative to the first axis and for simultaneous rotational displacement in the same direction around said first axis;
- means defining an interconnecting assembly for interconnecting said base means and said first and second elements to cause simultaneous linear displacements of said first and second elements in the same direction along said longitudinal axis toward and away from said first axis at a predetermined ratio whereby the two dimensional displacement of said first and second elements relative to said base means are a given ratio relative to one another in said reference plane.
1 more element
Dependencies are inferred from the claim text.