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A crowbar with a curved chisel end to provide a fulcrum for leverage and a goose neck to pull nails. A crowbar, also called a wrecking bar, pry bar or prybar, pinch-bar, or occasionally a prise bar or prisebar, colloquially gooseneck, or pig bar, or in Australia a jemmy, [1] is a lever consisting of a metal bar with a single curved end and flattened points, used to force two objects apart or ...
The trade name "Yankee" screwdriver was first marketed by North Brothers Manufacturing Company in ≈16 April 1895, with the No. ≠130 spiral ratchet screwdriver. Yankee soon became and still is a well-known name in automatic spiral ratchet screwdrivers , with several other models, and model improvements patented by North Bros. over a 40-year ...
Torq-set is a cruciform screw drive used in torque-sensitive applications. The Torq-set head is similar in appearance to a Phillips drive in that it has a cross with 4 arms. In Torq-set however, the lines are offset from each other, so they do not align to form intersecting slots across the top of the head.
Proper use requires that the screwdriver's tip engage the head of a screw of the same size and type designation as the screwdriver tip. Screwdriver tips are available in a wide variety of types and sizes (List of screw drives). The two most common are the simple 'blade'-type for slotted screws, and Phillips, generically called "cross-recess ...
Using digging bars to move rocks A girl and a man dig a hole with a heavy digging bar to plant a tree. Common uses of digging bars include breaking up clay, concrete, frozen ground, and other hard materials, moving or breaking up tree roots and obstacles, and making holes in the ground for fence posts.
North Bros. key acquisition was the hiring of Zachary Furbish when it purchased the Forest City Screwdriver Co in 1897. He brought with him patents related to a spiral ratchet screw driver and considerable experience in tool design. This was their foothold into the tool manufacturing industry which would later become the core of their business.
A cat's paw with extracting notches on each end. Typical lengths vary between 8 and 16 inches (20 and 41 cm) long. A cat's paw or cat's claw is a metal hand tool used for extracting nails, typically from wood, using leverage.
The Hurwood Company is a historic industrial complex at 379 Summer Street in Southington, Connecticut.Built beginning sometime before 1884, this complex of mainly brick buildings is typical of the town's industrial landscape of the late 19th and early 20th centuries, and was where solid-headed screwdrivers were first manufactured.
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