Simple Kinematic Screw Chain
- Title:
- Simple Kinematic Screw Chain
- Title (German):
- Einfache Schraubenkette Umkehrbar
- Collection:
- Reuleaux Kinematic Mechanisms Collection
- Set:
- M. Screw Mechanisms
- Designer:
- Reuleaux, F. (Franz), 1829-1905
- Manufacturer:
- Gustav Voigt Werkstatt
- Date:
- 1882
- Country:
- Germany
- Voigt Catalog Model:
- M1
- File Name:
- M01.jpg
- Work Type:
- Mechanical model
- Materials/Techniques:
- cast iron and brass on wood pedestal
- Subject:
- screw
Kinematics of Machinery - Measurement:
- 161 x 158 (millimeters, width x depth)
161 x 158 x 341 (millimeters, width x depth x height) - Description:
- Reuleaux’ taxonomy for kinematic mechanisms is based on the ideas of motion constraints between two bodies called a kinematic pair and the closed circuit of such constraints called a kinematic chain. Model A-1 is an example of a screw constraint between two bodies, Models M-1, M-2 and M-3 provide examples of simple, closed, kinematic chains using the screw pair. In models M-1, M-2 and M-3, a screw is fixed to the base and two other bodies are joined with it to form a closed kinematic circuit that allows the motion of one other body when the motion of the other is prescribed. In Model M-1, the three bodies are coupled with three screw pairs. In Model M-2 there are two screw pairs and one revolute pair of constraints. In Model M-3, there is one screw pair coupled to one revolute and one prismatic or sliding pair. In all three models the mechanism can be removed from the wooden base and the cylindrical body with the two bosses affixed to the stand H-1 to obtain further inversions of each kinematic chain. The closed screw kinematic mechanism has been used for centuries as a 'screw jack' to lift heavy objects. [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. - Repository:
- Sibley School of Mechanical and Aerospace Engineering, Cornell University
- Format:
- Image
- Rights:
- Photography credit: Jon Reis (www.jonreis.com). Jon Reis Photography grants Cornell University Libraries and the Cornell College of Engineering the rights to display copyrighted images of the Reuleux collection of kinetic machines on the Cornell University and National Science Digital Library web sites and for unlimited use in Cornell University Library publications for education purposes only. Rights for all other uses, including but not limited to, editorial, commercial, advertising, web use and display by third parties not affiliated with Cornell University are reserved by the photographer. The written permission of any copyright and other rights holders is required for distribution, reproduction, or other use that extends beyond what is authorized by fair use and 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. For questions about this item or other items please contact the Physical Sciences Librarians at pslref@cornell.edu.