Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 8065809 | Angle measurement device A device for measuring angles between surfaces of a physical object includes a linkage having two or more gauging arms and a metered arm. The metered arm is coupled to one arm of the linkage. The metered arm indicates an angle between two or more surfaces of the phy... | 11/29/2011 |
| 7310884 | Adjustable golden section indicator and method for loci transfer An adjustable device to locate and transfer the positions of golden section points from a source image to a secondary surface, comprising a plurality of paired blades that are coupled to pivot at the golden section points that occur along the length of the blades an... | 12/25/2007 |
| 7302763 | Adjustable jig for use when installing bargeboards An adjustable jig includes rigidly formed arms that have rectilinear shapes provided with opposite edges, an elongated central opening formed therein and opposed ends abutted with adjacent arm ends. Fasteners are interfitted within the arm openings such that the arm... | 12/04/2007 |
| 7197833 | Framing square jig A tool for holding a framing square has a body with a pair of spaced longitudinal slots accommodating the flat legs of the framing square. Clamping devices mounted on the body clamp the body on the legs of the framing square to fix the position of the framing square... | 04/03/2007 |
| 7122038 | Localizing device for ventriculostomy A localizing apparatus includes a frame, a linear reference marker, and a target marker. The frame includes a first portion fixable to a first anatomical reference point. The linear reference marker is rotatable about the first anatomical reference point to align a ... | 10/17/2006 |
| 6978550 | Protractor and ruler combination A protractor and ruler combination includes a main ruler having a side formed with a protractor, a secondary ruler rotatably mounted on the main ruler, and an auxiliary ruler having a side secured on the secondary ruler, so that the secondary ruler is moved in conce... | 12/27/2005 |
| 6964111 | Folding drywall square A drywall square having a straight long arm of at least forty-eight inches. The long arm has a first end and a second end, wherein the long arm is segmented into a plurality of sections between those ends. A straight short arm intersects the long arm. A first hinged... | 11/15/2005 |
| 6954990 | Angle measuring device A measuring device is provided for carpenters, roofers and other tradesmen. The device is made of relatively lightweight plastic and has a variety of uses. The elongated base is rectangular in cross sectional and includes a scale for measuring distances along one si... | 10/18/2005 |
| 6935037 | Tile contour tool An apparatus for tracing a contour onto a tile prior to cutting the tile includes a base member having a first longitudinal slot and a retaining lip disposed at one end thereof. A first extension member includes a second longitudinal slot and is pivotally attached t... | 08/30/2005 |
| 6935041 | Modular framing tool Disclosed is a modular framing tool and a method for beam framing. The modular framing tool of the present invention comprises alignment members attached to a common body portion. In one embodiment, the tabs are permanently and rotatably attached with a locking mech... | 08/30/2005 |
| 6904697 | System for marking an arc segment This device facilitates field marking an arc of a circle having an obstructed center. It comprises a first clamp having a slot to engage a standard tape measure and a second clamp having another slot to engage a color-coded tape measure. A detachable swivel joint sn... | 06/14/2005 |
| 6694635 | Router template apparatus A router template apparatus for routing stair stringers to accept end sections of stair members to facilitate building a stairway. The router template apparatus includes a rectangular frame member that has an opening extending therethrough for receiving a... | 02/24/2004 |
| 6553683 | Method and apparatus for generating a template A method for defining a regular or irregular shape utilizes a template apparatus including a plurality of radially-adjustable corner members connected by length-adjustable straight edge members. The corner members include an angle scale to display the def... | 04/29/2003 |
| 6510616 | Adjustable template tool for stairways An adjustable template tool for stairways for speeding up and simplifying stair layouts. The adjustable template tool for stairways includes an elongate support assembly; and also includes a stair riser template member being adjustably mounted to the elon... | 01/28/2003 |
| 6334261 | Collapsible square A collapsible square constructed according to the principles of the present invention includes a first elongated rigid leg having first and second ends and a second elongated rigid leg having first and second ends. The second elongated rigid leg is pivota... | 01/01/2002 |
| 6195903 | Tools for squaring ends of elongated objects A tool for cutting the ends of conveyor belts square includes a T square having a cross leg standing transverse to the belt when the tool is used and a primary leg extending longitudinally along the belt. A pair of end links are adapted to engage opposite... | 03/06/2001 |
| 6145210 | Accessorized collapsible multiscale The accessorized collapsible multiscale comprises a plurality of elongate slats which are joined together along elongate edges thereof, each slat including at least one graduated scale thereon, the multiscale being collapsible by folding together of adjac... | 11/14/2000 |
| 6134796 | Aircraft navigational plotter A simple easy-to-use aircraft navigational plotter is disclosed. The device is used in conjunction with the signals and readouts received from a pair of VOR (Very high frequency Omni-directional Range) stations. A pair of plotter arms is rotatably connect... | 10/24/2000 |
| 6101730 | Template jig for determining precise cutting lines on tiles A marking indicator template jig for marking a tile to be cut and positioned in an open area of a size smaller than a size of the tile. The jig includes first and second legs pivotally connected together. A first telescoping leg is pivotally connected to ... | 08/15/2000 |
| 5873171 | Ruler assembly A ruler assembly includes a ruler to which a connecting member is pivotably connected and a magnifying member is pivotally connected to the connecting member so as to have a series of graduations defined on the ruler magnified through the magnifying membe... | 02/23/1999 |
| 5732474 | Visual aid and manipulative for demonstrating geometric and trigonmetric functions The present invention herein called "LABEs", comprises a manipulative for assisting students in the visual understanding of the relationships of all angles in a rectangle, triangle, or other such geometric shapes relative to their side lengths, thus allow... | 03/31/1998 |
| 5603164 | Adjustable angle guide and angle finder An angle guide device is disclosed which includes a slotted base member pivoted at one end to one end of an angle guide member, an adjustment member pivoted at one end to the angle guide and carrying a slider element at the other end. The slider element i... | 02/18/1997 |
| 5524353 | Siding leveling device A leveling device for extending a course of siding around an interior or exterior building corner includes a center link and two elongate planar arms pivotedly attached to the link. The arms are provided with alignment edges for fitting under edges of sid... | 06/11/1996 |
| 5473821 | Parallelogram device for setting mitering saws A parallelogram tool for measuring exterior and interior angles is used in conjunction with a miter saw having a pair of pivotally mounted guide blocks. The tool is made of six link members that are pivotally interconnected to one another. One of the pivo... | 12/12/1995 |
| 5472029 | Saw guide The invention provides a saw guide for a power saw or router of the type having a blade and a saw housing wider than the blade which directly overlies the blade during cutting. The saw guide includes a guide bar having a straight outer edge for guiding a ... | 12/05/1995 |
| 5461794 | Movable type measurement scale at variable angles The present invention relates to a kind of movable device which varies at any angle to serve as measurement ruler, and more particularly to an improved structure of measurement ruler with multiple functions in use. The ruler's main body is L shaped with e... | 10/31/1995 |
| 5414938 | Portable templet and method therefor An end of a rectangular scaled straight edge is pivotally connected to an end of a rectangular unscaled straight edge. The scaled straight edge has a longitudinal slot wherein a stem is retained by a compression lock. The stem passes through a hole in one... | 05/16/1995 |
| 5384967 | Collapsible rafter square A square is disclosed which is especially adapted for the marking of angular dimensions on, or the transfer of angular dimensions from, rafters or other building materials and the like in that only one adjustment is needed to vary the angle being marked o... | 01/31/1995 |
| 5359782 | Compound sliding bevel square An apparatus for measuring compound angles. This apparatus makes use of the standard T-bevel square, which is capable of measuring only a single angle. The invention is a compound angle blade with a split collet joint. The compound blade attaches by repla... | 11/01/1994 |
| 5271159 | Circular saw guide A mitering guide device for a circular saw has a protractor including a curved edge with angle markings thereon. An arm is pivotally attached to the protractor and performs in conjunction with a saw guide for defining an angle to be cut. A hinge is attach... | 12/21/1993 |
| 5208992 | Measuring instrument An improved measuring apparatus (10) including male (12) and female (11) measuring instruments equipped with complimentary pairs of male (14) and female (13) sleeve bodies bearing a multiplicity of variably aligned calibrated indicia (50) representative o... | 05/11/1993 |
| 5199179 | Apparatus and method for measuring angles between angularly related flat surfaces The measuring tool includes a pair of measuring sections pivotally hinged one to the other. Each section includes a flat plate mounted for pivotal movement about an axis normal to the hinge axis. Frictional locking means lock each plate in adjusted pivota... | 04/06/1993 |
| 5020233 | Measuring instrument The disclosed measuring instrument includes a pair of members arranged together to form a right-angled L and the members having indicia providing linear scales useful in measuring areas in architectural plans and the like. The members are separable at the... | 06/04/1991 |
| 4766675 | Angle measuring instrument An angle measuring instrument comprises, a multi-sided plate member which includes a first side and a second side that form an acute angle therebetween when they intersect, a third straight side that forms with the second side an obtuse angle when they in... | 08/30/1988 |
| 4729173 | Adjustable carpenter's square An adjustable carpenter's square is formed by having a main beam with a head secured to an upper portion of the main beam with a slide secured to the upper end of the main beam. The head and the slide are partially rotatablely secured to the main beam. Th... | 03/08/1988 |
| 4413419 | Method and apparatus for remote measuring An apparatus and method is provided for measuring remotely at a position above ground the angle of the notch in a manhole weir for obtaining information to calibrate the monitoring equipment and includes a cross member having a pair of pivotally attached ... | 11/08/1983 |
| 3952417 | Angle measuring device Device for measuring an angle defined by two adjacent planes. The invention defines a pair of independent parallelogram units each hinged at their respective corners and each carrying an angle sensing unit at a first respective end thereof. The second res... | 04/27/1976 |
