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A medieval view of fish processing, by Peter Brueghel the Elder (1556). There is evidence humans have been processing fish since the early Holocene. For example, fishbones (c. 8140–7550 BP, uncalibrated) at Atlit-Yam, a submerged Neolithic site off Israel, have been analysed. What emerged was a picture of "a pile of fish gutted and processed ...
Electrofishing. Scientists carrying out a population and species survey using electrofishing equipment. Electrofishing is a fishing technique that uses direct current electricity flowing between a submerged cathode and anode. This affects the movements of nearby fish so that they swim toward the anode, where they can be caught or stunned.
Tractor-driven circular saw. A circular saw or a buzz saw, is a power- saw using a toothed or abrasive disc or blade to cut different materials using a rotary motion spinning around an arbor. A hole saw and ring saw also use a rotary motion but are different from a circular saw. Circular saws may also be loosely used for the blade itself.
Ikejime. Tekagi (手鉤), the tool that is used for performing ikejime. Ikejime (活け締め) or ikijime (活き締め) is a method of killing fish that maintains the quality of its meat. [1] The technique originated in Japan, but is now in widespread use. It involves the insertion of a spike quickly and directly into the hindbrain, usually ...
Friction stir processing ( FSP) is a method of changing the properties of a metal through intense, localized plastic deformation. [ 2]: 7 [ 3]: 1117 This deformation is produced by forcibly inserting a non-consumable tool into the workpiece, and revolving the tool in a stirring motion as it is pushed laterally through the workpiece. [ 2]: 5 [ 4 ...
Seth Babbitt (father) Elizabeth Babbitt (mother) Sarah "Tabitha" Babbitt (December 9, 1779 - 10 December 1853) was a Shaker credited as a tool maker and inventor. Inventions attributed to her by the Shakers include the circular saw, the spinning wheel head, and false teeth. She became a member of the Harvard Shaker community in 1793.
Pristis Linck, 1790. Sawfish, also known as carpenter sharks, are a family of rays characterized by a long, narrow, flattened rostrum, or nose extension, lined with sharp transverse teeth, arranged in a way that resembles a saw. They are among the largest fish, with some species reaching lengths of about 7–7.6 m (23–25 ft). [2]
Cutting tool (machining) In the context of machining, a cutting tool or cutter is typically a hardened metal tool that is used to cut, shape, and remove material from a workpiece by means of machining tools as well as abrasive tools by way of shear deformation. The majority of these tools are designed exclusively for metals.