When was the first claw hammer invented




















Most homeowners can get along quite well with a trusty finish hammer, distinguished by its smooth face, light head less than 20 ounces , short handle less than 16 inches , and curved claw for easy nail removal. For the more muscular work of nailing lumber, a framing aka, rip hammer is the way to go.

It has a handle up to 18 inches long, a straight claw for prying apart pieces of wood, a head weighing 20 ounces or more, and a milled face to grip nailheads.

For most tasks around the house, a finish hammer is what you need. Unlike head-heavy framing hammers, finish hammers are balanced to tap a slender nail without overstriking or bending it. A "tuning fork" in the handle of this ounce model dissipates impact shocks and vibrations, which can harm joints, muscles, and nerves even if you're not hammering all day long.

The rubber grip has a diamond-patterned texture and a "deer's-foot" flare at the end to ensure it won't slip out of a sweaty palm. Slim and lightweight, Japanese finish hammers have a nimbleness well suited to delicate finish work.

Their elongated necks keep knuckles clear of the work, and sharply pointed, steeply sloped claws extract embedded nails in one pull.

Striking plates on the sides cheeks of this ounce head can drive nails in tight quarters. The Striker's exquisitely sculpted ounce head is permanently fastened to its fiberglass handle with epoxy resin, which resists nearly 5, pounds of pullout force wood handles can withstand about pounds ; that means you can pound nails in and crank them out again with abandon.

The groove in the head is a magnetic nail holder for one-handed nail starting. Titanium isn't cheap, but if you're pounding a houseful of nails, you'll appreciate that it's about 45 percent lighter and 10 times better at damping vibration than the high-carbon steel most hammer heads are made of. How has technology changed farming.

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Made by Homo Habalis, a forerunner to Homo Sapiens, and dates about two million years ago. This first hammer was held in the hand and has basically three functions for which it is suited: pounding, grinding and cutting. A relatively high specific weight and hardness give it much more impact power than a similarly sized piece of timber would have. This hardness is also what restricts its use as a hammer, because it splinters easily.

The stone was either chipped or ground into the desired shape depending on the kind of stone: Fine sandstone, limestone and the like were ground serving as grinding stones and the like, while flint was generally chipped and used for cutting. Some materials like granite could only be worked with spherical hammer stones made of diorite, a stone of even greater hardness.

Thanks to their roundness and composition these hammer stones rarely splintered. Applied with measured force they were used to slowly pulverize and shape the work piece. A stone hammer head with groove fashioned to attach to handle. It was over a million years before a handle was adapted to this hand held stone to make a compound tool. Very rarely was a hole made in the stone hammer head for assembling as this was a rigorous chore. Imagine using a reed drill with sand abrasive to grind away at the stone to produce a hole.

It was much easier to make a hole in the wood handle and wedge the stone into it. Of course early man discovered other materials suitable for hammers as antler and bone was adapted for simple hammers where making a hole could be produced with arrow like drills spun between the hands. Above is a grooved hammer stone. A typical example of a handle lashed to the stone. There were various techniques to attaching the hammer head to a handle, but with the advent of metal casting around BC a hole was supplied in the hammer head allowing for a wood handle.

The porous mass of brittle iron, which was the result of the smelting in the charcoal furnaces, had to be worked by hammering in order to remove the impurities. Carburizing and quenching turned the soft wrought iron hammer head into harder steel. Iron implements are generally less well preserved than those made of copper or bronze. But the range of these early hammers covers most of today's craftsman's activities.

When early colonists came to this country from their homelands they brought their tools with them, the hammer included. But hand wrought iron nails were difficult to make in quantity, and expensive when bought. A Commander. Wood was plentiful and as a result woodworkers used wood joints and easily made wooden pegs called trunnels for assembly.

Wooden hammers ranging in size from the small hand held mallet to the large commander which was used to nudge together barn beams were dominant. A metal hammer would increase the chance of splitting the piece into which the wooden peg was driven and have a tendency to mushroom the pegs soft heads.

Of course metal hammers were still used by the blacksmiths and other metalworking craftsmen. Early hammers without the adz eye were similar to earlier Roman hammers.

It is well recognized that the claw hammer as we know it today was first used during the Roman times. This is well documented by artifacts found in museums. I am sure it had the same problem then as hammers of the early nineteenth century had, the head flying off the handle or the handle breaking. This problem was the source of inventive craftsmen developing solutions. One of the earliest solutions was using metal straps or flanges that attach to the wood handle for reinforcement.

These could be part of the hammer head Fig. They often were riveted to the wood handle just a bit down from the hammer head. But the holes going thru the handle at this location weakened the handle and often caused it to break at the rivet hole.

Attaching a new handle was difficult using this metal reinforcement. Another technique of stopping the handle from coming apart from the hammer head is to make it all one piece. Different manufactures were very successful with this design such as the Perfect Handle hammer and the Estwing hammer.

A hammer I recently found seems to borrow a technique used by early axes. It is a socketed hammer head with the handle firmly driven and riveted into the socket. Figure He states that this curved claw attached to a ring around the handle will prevent the handle from breaking or loosening. The most successful hammer modification of modern times is the adze eye hammer head invented by David Maydole.

He was a blacksmith in Norwich N. He adapted the eye from the adze which has a wider opening at the top of the head and narrows as it extends thru the head. By also extending the head further down the handle he produced a hammer head that was stronger and would not become loose. He never patented this invention but used it in his very successful hammer manufacturing business which he started in The business was continued by his family after his death in At that time it was the largest hammer manufacturer in the country with employees.

In the company received its largest order when the Navy purchased , hammers for use by their shipyards. A fire destroyed the Maydole factories in and the business never recovered. Many Maydole adze eye hammers can be found today, but finding a non— adze eye Maydole claw hammer is rare.



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