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A thread restoring file, one type of thread restorer. A thread restorer is a tool used to fix threads on nuts or bolts that have become damaged. One type of thread restorer is a thread restoring file or thread file. [1] There are other types of thread restoring tools as well, for example a chaser tap or chaser die. [2] Normal taps and dies can ...
Both tools can be used to clean up a thread, which is called chasing. However, using an ordinary tap or die to clean threads generally removes some material, which results in looser, weaker threads. Because of this, machinists generally clean threads with special taps and dies—called chasers—made for that purpose. Chasers are made of softer ...
One set of chasers would be used at a time, each chaser is inserted into the die head (in the correct order) and the die head is closed bringing the chasers down to their cutting position. When sufficient length of thread has been cut the die head will open allowing for rapid retraction of the head without interference with the newly formed thread.
H. Gerstner & Sons, Inc. is a manufacturer of wooden tool chests based in Dayton, Ohio.Started in 1906, it has remained family-owned. [1] Of more than twenty manufacturers building wooden tool chests for journeymen in the early 20th century, H. Gerstner & Sons is the only one to still exist.
Studley Tool Chest, open. Henry O. Studley (1838–1925) was an organ and piano maker, carpenter, stonemason, and Freemason who worked for the Smith Organ Co. and later for the Poole Piano Company of Quincy, Massachusetts.
A set of metric spanners or wrenches, open at one end and box/ring at the other. These are commonly known as “combination” spanners. A wrench or spanner is a tool used to provide grip and mechanical advantage in applying torque to turn objects—usually rotary fasteners, such as nuts and bolts—or keep them from turning.