Vise with stationary vee-shaped jaw and segmented notched jaw for holding irregular shaped objects is described. Operation of the device and specific application to holding bones are explained. Diagram of equipment is provided

Dowell, R. H.

English

NASA Technical Reports Server

September 1972	 1372-10569 
•	 NASA TECH BRIEF 
Ames Research Center 	 -4r 
NASA Tech Briefs announce now technology derived from the U.S. space program. They are issued to encourage 
commercial application. Tech Briefs are available on a subscription basis from the National Technical Information 
Service, Springfield, Virginia 22151. Requests for individual copies or questions relating to the Tech Brief program may 
be directed to the Technology Utilization Office, NASA, Code KT, Washington, D.C. 20546. 
Vise to Hold Bones or Other Irregular Objects 
The problem: 
To hold irregular or slippery objects such as bones 
in order to cut sections or to perform other operations. 
The solution: 
A vise with a stationary vee-shaped jaw and a seg-
mented notched jaw. 
How it's done: 
The vise is constructed as shown in the diagram. 
The jaw which is attached to the screw has a deep 
45° notch, and it is gibbed loosely; additionally, to 
permit adaptation to irregular objects, the screw is 
fabricated slightly smaller than the tapped hole in 
the body of the vise. The other jaw, which ordinarily 
is completely immobile in vises, has a face made up 
of a cluster of 45-degree-notched segments of hard-
ened steel. The cluster of segments is snugly pinned 
to the vise body with a hardened dowel placed in
such a position that each segment can only move 
in a small arc in a plane perpendicular to the axis of 
the dowel. When an object is compressed between 
the jaws of the vise, the segments in the cluster are 
moved into positions which accommodate irregular-
ities; thus, the notches of a number of segments are 
brought into contact with the object. With ordinary 
vee-jaw vises, each jaw seldom will make contact 
with more than two spots on an irregular object; in 
contrast, a jaw with notched segmented sections 
makes contact at many points and, since each contact 
point is a source of friction, irregular objects are held 
securely. 
Note: 
No additional documentation is available. Specific 
questions, however, may be directed to: 
Technology Utilization Officer 
Ames Research Center 
Moffett Field, California 94035 
Reference: B72-10569 
Patent status: 
Inquiries concerning rights for the commercial use 
of this invention should be addressed to: 
NASA Patent counsel 
Mail Code 200-1A 
Ames Research Center 
Moffett Field, California 94035 
Source: Richard H. Dowel
Ames Research Center
(ARC-10679) 
Category 07 
This document was prepared under the sponsorship of the National
	 Government assumes any liability resulting from the use of the 
Aeronautics and Space Administration. Neither the United States
	 information contained in this document, or warrants that such use 
Government nor any person acting on behalf of the United States
	 will be free from privately owned rights.
https://ntrs.nasa.gov/search.jsp?R=19720000568 2020-03-17T03:36:03+00:00Z


Vise to hold bones or other irregular objects

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