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If you are trying to determine the age of a piece of American antique furniture , it will require investigative work. Look closely at the the different elements that make the piece of furniture. Examine the level of work that went into the furniture from the joinery, finishing, knobs, and more. Study the materials used from the wood, fabric, and screws. If you take all these factors into consideration, you may be able to figure out on your own if have an antique or a machine-made reproduction. When you are trying to determine the age of piece you cannot just look at furniture style. Popular styles have been prolifically reproduced over the years and some of these classic styles are still being made today.
A power tool that does the same job is a power screwdriver. The hand-tool for driving cap screws and other types is called a spanner U.
Nuts are square, round, or hexagonal metal blocks with a screw thread on the inside. Nuts help fasten objects together and are used with screws or bolts.
Share Flipboard Email. Mary Bellis. Inventions Expert. Mary Bellis covered inventions and inventors for ThoughtCo for 18 years. She is known for her independent films and documentaries, including one about Alexander Graham Bell. ated October 04, Myriad types of screws have been invented to perform specific tasks. A cap screw has a convex head, usually hexagonal, designed to be driven by a spanner or wrench.
The machine screw has a cylindrical shaft and fits into a nut or a tapped hole, a small bolt. A drywall screw is a specialized self-tapping screw with a cylindrical shaft that has proved to have uses far beyond its original application.
>Antique Nails: History & Photo Examples of Old Nails Help Determine Age of a Structure Building hardware age: door & window hardware, knobs, latches, hinges, & screws & nails. This article describes and illustrates antique & modern hardware: door knobs, latches, hinges, window latches, hardware, nails & screws can help determine a building's age by noting how those . The use of metal screws as fasteners began in Europe in the 15th century. The screw was used in furniture but did not become a common woodworking fastener until efficient machine tools were developed near the end of the 18th century. The earliest record of lathe made wood screws dates to an English patent of File Size: KB. How to Date Old Chairs. yet are distinguishable by their thin metal legs and noticeable fiberglass fibers. Phillips screws shouldn't be anywhere on the chair if it is truly old as these.
The set screw has no head at all and is designed to be inserted flush with or below the surface of the work piece. It is used for making hidden joints between two pieces of wood. Slot head screws are driven by a flat-bladed screwdriver.
Cross-head or Phillips screws have an X-shaped slot and are driven by a cross-head screwdriverdesigned originally in the s for use with mechanical screwing machines, intentionally made so the driver will ride out, or cam out, under strain to prevent over-tightening.
The Pozidriv is an improved Phillips head screw, and it has its own screwdriver, similar to cross-head but with better resistance to slipping, or cam-out.
Robertson drive head screws have a square hole and are driven by a special power-tool bit or screwdriver this is a low-cost version of the hex head for domestic use.
Torx head screws have a splined socket and receive a driver with a splined shaft.
The Evolution of the Screw and Screwdriver
Industrial Fasteners Institute. Country furniture made with these screws can easily be dated to the ten-year period The Mercer library contains materials on both machine made screws and methods of cutting screws by hand. Incast iron latches became available to cabinetmakers.
After the introduction of the cast iron latch, most cabinetmakers used this new feature in place of the little wooden turnstile that had been used for centuries.
In the South and Midwest, hand-cast brass latches were in use before These early latches were inlaid into cabinet doors rather than being attached to the surface, as were the later cast iron latches. Dealers who specialize in country and primitive furniture have depended on the above methods plus the study of nails for dating their antiques. Many dealers feel that the technological system is superior to the stylistic system.
Furniture styles linger for years. New technologies, because they bring cheaper prices or faster methods, are accepted quickly - usually within a year or two.
The Dating of Old Houses, a paper prepared by Dr. Henry C. Mercer, contains photographs, drawings, and patent information on nails, hinges, screws, hardware, planing machines, etc. The screw above was handmade. The slot in the top was hand cut by a hacksaw. The screw on the right was machine made. The slot in its head was cut by a machine. There are many differences between a handmade and a machine-made screw.
The shank of a handmade screw does not taper. The point of the handmade screw is blunt. By contrast, the shaft of the machine made screw tapers to a point.
Closely review the screws. Screws were not made completely by machine until So if you find a furniture item using screws that have completely rounded shafts, pointed ends, and perfectly finished heads with matching cuts (much like a screw you would purchase today), the piece likely dates to the midth century or later. A screw is a type of fastener, in some ways similar to a bolt (see Differentiation between bolt and screw below), typically made of metal, and characterized by a helical ridge, known as a male thread (external thread). Screws are used to fasten materials by digging in and wedging into a material when turned, while the thread cuts grooves in the fastened material that may help pull . Screws with these characteristics were produced until early in the 19th century. Aroun a machine was introduced that made screws on a lathe, but the War of slowed its distribution and development. After the war, the new machine went right to work, turning out virtually identical screws with sharp even threads.
The threads are cut evenly and they pitch at a different angle than those of the handmade screw. The first machine made screw dates to The first machine made screw with a machine cut slot in its head dates to Click here to view part two of this article.
Re: article july 3 regarding dating primitive furniture.
A collar pin is a metal fastener that connects the two sides of a shirt collar by passing underneath the tie. It can take the form of a large safety pin, or be shaped like a bar, either with clasps on either end or two spheres or cubes on either end, that unscrew and pass-through holes in the collar (similar to a bar cufflink). By Antique Trader Staff. Oct 19, Furniture. Furniture Detective: Elaborately carved chair may be one-of-a-kind. By Fred Taylor. Sep 28, Furniture Styles. Furniture refinishing using guides and experience. By Fred Taylor. Sep 15, Furniture Styles. Furniture Detective: Depression era furniture terms. Jul 03, Business of Doing Business System for Dating Country and Primitive Furniture, Part One System for Dating Country & Primitive Furniture, Part1 The Business of Doing Business in Antiques - The Journal of Antiques and Collectibles - July furniture, hinges, nails, screws.
I frequently see pointed screws on English furniture and small pieces. Does this necessarily mean that the item was made after ?
Dating metal screws
Or was a pointed screw available in Europe esp. UK before ? Thanks for any help.
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Self tapping screw comparison - Episode 63 Texas Barndominiums
Learn how your comment data is processed. Log in Remember me. Lost your password? This hinge dates to about The hinge in the middle is thinner and was removed from a cupboard made about The hinge on the right is a modern hinge. It was removed from a house when the kitchen cabinets were undated. The hinge dates to Stamped steel hinges began to appear in I began collecting up and down, pit, bolt, and early circular saws to study saw construction and the marks each type of saw left on the wood it cut.
The four saws on the left are waterwheel powered up and down saws. The circular saw was used to cut clapboards before Modern circular saws spin fast and cut very little wood on each revolution.
The next three saws are bolt saws used by some mills to square both ends of a log before cutting boards. The three saws on the right are two-man powered pit saws used to handsaw logs into boards. The tall pit saw was used in a shipyard as a large jigsaw to shape timber for ship construction. For the purpose of scale and size, my garage is eight feet - six inches tall.
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