A clamp holder or clamp fastener is a piece of
laboratory apparatus
A laboratory (; ; colloquially lab) is a facility that provides controlled conditions in which scientific or technological research, experiments, and measurement may be performed. Laboratory services are provided in a variety of settings: physicia ...
that is used to secure laboratory
clamps
Clamp may refer to:
Tools and devices
*Brick clamp, an early method of baking bricks
*Clamp (tool), a device or tool used to hold objects in a fixed relative position (many types listed)
**C-clamp
**C-clamp (stagecraft)
**Riser clamp, a device u ...
, such as extension-type
utility clamps, or other attachments to a
ring stand or lab frame. The material can be made up of
brass
Brass is an alloy of copper (Cu) and zinc (Zn), in proportions which can be varied to achieve different mechanical, electrical, and chemical properties. It is a substitutional alloy: atoms of the two constituents may replace each other with ...
,
cast iron
Cast iron is a class of iron–carbon alloys with a carbon content more than 2%. Its usefulness derives from its relatively low melting temperature. The alloy constituents affect its color when fractured: white cast iron has carbide impuriti ...
,
stainless steel
Stainless steel is an alloy of iron that is resistant to rusting and corrosion. It contains at least 11% chromium and may contain elements such as carbon, other nonmetals and metals to obtain other desired properties. Stainless steel's corros ...
,
aluminium
Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. I ...
or
nickel-plated zinc
Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodi ...
.
Operation
A ring-stand rod and clamp are inserted into two jaws of a clamp holder and adjustable
thumbscrews fasten the clamp holder to the attachments and lock it in place. The attachments can be secured with the thumbscrews to be positioned at any height or
angle
In Euclidean geometry, an angle is the figure formed by two Ray (geometry), rays, called the ''Side (plane geometry), sides'' of the angle, sharing a common endpoint, called the ''vertex (geometry), vertex'' of the angle.
Angles formed by two ...
, with a regular clamp holder positioning the apparatus at a 90° angle.
Uses
Clamp holders can secure laboratory equipment at specific angles, diameters, and weights, as required. Clamp holders are often used to hold the attached apparatus over a work surface. There are several different types of holders, such as swivel holders and all-position holders, that allow adjustments for different angles and
planes. In some cases it can be used to attach support rods together.
Additional images
File:Boss Head Right Angle.jpg, Boss Head Right Angle Clamp Holder
File:Clamp holder with utility clamp.jpg, Clamp holder attached to utility clamp
File:Clamp holder with ring stand.png, Clamp holder attached to ring stand
File:Clamp holder with clamp and ringstand.jpg, Clamp holder connecting clamp with ring stand
See also
*
Retort Stand
In chemistry, a retort stand, also called a clamp stand,Laboratory-Equipment.com (2020):Large Clamp Stand, for Q700. Online catalog item 5323-07. Accessed on 202-02-18. a ring stand, or a support stand,Fischer Scientific (2020):American Education ...
*
Utility Clamp
A utility clamp is a laboratory apparatus resembling a pair of scissors. The screw in the middle works as the wide adjustment of 2-prong. It is composed of 3 parts: 2-prong adjust, metal rod, and clamp down (the clamp is attached to the ring stan ...
*
Iron Ring
References
{{Laboratory equipment
Laboratory equipment