September 28th 1993 -- BEAVERTON, OREGON - Saltire Software today announced
the Atlas of Linkage Design and Analysis, a unique software and book
combination for mechanical engineers.

The Atlas is the first comprehensive catalogue of coupler curves since
Hrones & Nelson's 1953 classic "Atlas of the Four Bar Linkage". There are
over 500 pages of diagrams describing the motion of four broad families of
linkage: the crank-rocker, crank-crank, crank-slider and inverted
crank-slider. Over 3,000 coupler curves are shown.

The Atlas contains an introduction by Eugene Fichter, Ph.D., P.E. of Oregon
State University which covers the use of the atlas in designing four bar
linkages and the application of four bar linkages in the design of more
complex mechanisms.

The accompanying Windows based software allows any model from the atlas to
be loaded and analyzed for coupler location, velocity and acceleration
throughout the motion of the linkage. The software is a fully featured
linkage analysis package with animation of any desired range of motion,
envelopes of motion, graphs, tables, DXF and Windows clipboard output.

Said Glenn Smith, president of Saltire Software, "The Atlas of Linkage
Design and Analysis combines the best features of a book and computer
software. The engineer can flip quickly through the book to find a linkage
which approximately matches his design intent. He can then bring that
linkage up on the computer and vary the dimensions of the linkage to
optimize his desired motion."

The Atlas of Linkage Design and Analysis is fully compatible with Saltire's
powerful Analytix mechanism design and analysis software. Atlas models may
be loaded into Analytix for force analysis or for incorporation into
larger custom designs.

Said Philip Todd, VP of Research and Development,

"Many engineers design with cams because it is easy to specify a desired
motion. However linkages have great advantages over cams in low cost
manufacturability and ability to function reliably in hostile
environments. The Atlas of Linkage Design and Analysis will make it
simpler for engineers to design a linkage for a specific motion and help
them take advantage of these desirable properties."

Background to Saltire Software 

Saltire Software is the developer of a suite of engineering design and
analysis packages based on its proprietary Constructive Variational
Geometry and Embedded Physics technologies.

Analytix is a dimension driven mechanism design and analysis package.
Analytix is priced at $895.

Dynamix is an add on module to Analytix for dynamic simulation. Dynamix is
priced at $495.

Apollonius is a dimension driven geometry package. Apollonius is priced at
$99.

Pricing and Availability 

The Atlas of Linkage Design and Analysis along with accompanying software
is priced at $199 and is available now.

Saltire Software
P.O. Box 1565, Beaverton, OR 97075 
(503) 6224055, Fax: (503) 6224537

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