What’s a Spring Hammer?

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A spring-loaded hammer can be powered by a spring-loaded handle or compressed air. It was originally used in blacksmith shops to form blades quickly. Modern designs use compressed air to engage the hammer automatically. The technology has been transferred to the construction and demolition fields as the jackhammer.

A spring loaded hammer is a mechanical hammer that is usually powered by the coil and recoil of a spring loaded handle. It can also be powered by using compressed air. Compressed air is most commonly used in modern designs of mechanical spring hammers.
Previous spring hammers required the user to engage the device with an initial motion. This motion caused the spring mechanism to which the hammer was attached to the handle to initiate the reel’s recoil action. Due to the fact that each of these actions had an apex point, or point at which the force is greatest, a hammer table or block was usually placed just or after the apex point in hammer radius. This mechanism allowed the user to work more quickly on time-sensitive projects, such as hammering an iron pan while it was still hot enough to form.

The original designs of the spring hammer were often used in blacksmith shops, especially in blacksmithing specialties. The blank of the blade came out of the red-hot coals and had to be beaten with a hammer so that the blade itself could be formed before it cooled. The forming speed of the blade was often a problem for blacksmiths who were unable to perform the duties efficiently, until the spring hammer came into use in commercial applications. The user could engage the spring hammer with one hand and then use both hands to form the blade more evenly while it was still hot enough to be formed, reducing the amount of times a blade blank had to be treated or applied to intense heat.

More advanced spring hammers use compressed air to make the initial motion, with the spring hammer itself being engaged by pulling a trigger. The compressed air pushes the hammer head out of the cylinder, causing the spring behind the hammer head to pull it back through the force of the compressed air. Once the spring is wound back in, it again yields to the weight of the air pressure, allowing the process to become an automatic action.

A modern hammer can engage itself through its own motion, as long as air pressure is used to force the hammer head out of the cylinder. These types of hammers are used in various industrial settings. The technology has also been transferred to the construction or demolition fields in the form of the jackhammer, which is essentially a vertically designed spring-loaded hammer.

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