222 x 138 (millimeters, width x depth) 295 x 138 x 180 (millimeters, width x depth x height)
Description:
One problem that machine designers often face is the transfer of rotary motion from one shaft to another when the shafts are not aligned. The classic universal or Hooke’s joint (Model P-1) is such a mechanism but suffers the property that constant motion on the input shaft produces a non-steady motion on the output shaft. The jointed coupling in Model P-3 uses a symmetric joint to remove the irregularity in motion. This can be seen by measuring the input and output increment angles attached to the two cranks on the model. The model was also designed by Reuleaux to show that if the joint is not operated in a symmetric manner, irregular motion results. Reuleaux cited a patent of Clemens of November 10, 1869 in the 4th edition of The Constructor. [Francis Moon 2004-07-00] The 220 models in Cornell University’s Reuleaux Collection were built in the late 19th century to demonstrate the elements of machine motion, as theorized by the German engineer Franz Reuleaux. The University acquired the models in 1882 for use in teaching and research. The Reuleaux models are classified according to the alphanumeric schema employed in the catalog of the manufacturer, Gustav Voigt. The letter in a model's ID (e.g., B14 or S35) refers to a class of mechanism; the number is a specific instance of the class. This classification scheme is a simplified version of the taxonomy of machine elements elaborated in Reuleaux's work.
This item is protected by copyright, and the copyright holder is Cornell University. It is licensed for reuse under a Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). The item was created as part of the Kinematic Models for Digital Design Library (KMODDL) by Kent Loeffler, Kathryn Gelsone, and Susan Peck between 2002-2006 from materials held by the Sibley School of Mechanical and Aerospace Engineering, Cornell University. Permission is required for any use that extends beyond what is authorized by the license, fair use, and/or other statutory exemptions. Responsibility for making an independent legal assessment of an item and securing any necessary permissions ultimately rests with persons desiring to use the item.
