Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Patent
1997-03-21
1999-09-14
Roskoski, Bernard
Geometrical instruments
Indicator of direction of force traversing natural media
Level or plumb, terrestrial gravitation responsive
33756, 33832, G01C 1510
Patent
active
059503181
ABSTRACT:
A laser beam focus and alignment apparatus is provided for a focus engraving laser or the like and has a housing having an attaching portion for removably attaching to a laser apparatus over a laser beam output lens and a linear adjustable portion linearly adjustable relative to the attaching portion. A flexible plumb line has a predetermined length and is attached to the housing linear adjustable portion and has a plumb bob attached to the end thereof with a generally pointed end portion so that a laser beam focus and alignment apparatus can be attached to a laser beam apparatus and linearly adjusted until the plumb bob touches an item being focused upon to determine the focus and alignment of a laser beam. The housing attaching portion and linear adjustable portion can be threaded together so that rotating the linear adjustable portion moves it in a linear fashion to move the flexible bob line and bob. Indicia may be placed on the two parts of the housing for making adjustments and an electrical circuit can have a DC power source connected through an electric lamp into a metal plumb line and plumb bob on one side of the circuit and to ground on the other so that the lamp will be lit upon the point of the plumb bob touching a metal workpiece attached to the laser beam apparatus. The housing may also have an x-y adjustment mechanism having the plumb line attached thereto for making adjustments in an x-y plane.
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Hobby III William M.
Roskoski Bernard
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