roebling wire rope letter opener supplier

Wire rope manufacturers produce their products in order to provide a high load capacity, versatile alternative to weaker ropes like manila rope or hemp rope. Wire rope products are used for a wide variety of motion transmission applications, among them: lifting, baling, tie down, hoisting, hauling, towing, mooring, anchoring, rigging, cargo control, guidance and counterbalance. They can also be used as railing, fencing and guardrailing.

Wire rope is a must-have for many heavy duty industrial applications. From mining to forestry to marine and beyond, there’s wire rope for almost every job. Some of the many industries in which wire rope is popular include: construction, agriculture, marine, industrial manufacturing, fitness, sports and recreation (plastic coated cables for outdoor playground equipment and sports equipment), electronics, theater (black powder coated cables for stage rigging), mining, gas and oil, transportation, security, healthcare and consumer goods.

Wire rope as we know it was invented just under 200 years ago, between 1831 and 1834. At that time, the goal was to create a rope strong enough to support work in the mines of the Harz Mountains. Invented by Wilhelm Albert, a German mining engineer, this wire rope consisted on four three-stranded wires. It was much stronger than older rope varieties, such as manila rope, hemp rope and metal chain rope.

While studying at Freiburg School of Mines, a man named L.D.B. Gordon visited the mines in the Harz Mountains, where he met Albert. After he left, Gordon wrote to his friend Robert Stirling Newall, urging him to create a machine for manufacturing wire ropes. Newall, of Dundee, Scotland, did just that, designing a wire rope machine that made wire ropes with four strands, consisting of four wires each. After Gordon returned to Dundee, he and Newall, along with Charles Liddell, formed R.S. Newall and Company. In 1840, Newall received a patent for “certain improvements in wire rope and the machinery for making such rope.”

In 1841, an American manufacturer named John A. Roebling began producing wire rope for suspension bridges. Soon after, another set of Americans, Josiah White and Erskine Hazard, started incorporating wire rope into coal mining and railroad projects, forming Lehigh Coal & Navigation Company (LC&N Co.). In 1848, wire rope from their wire rope factory in Mauch Chunk, Pennsylvania provided the lift cables needed to complete the Ashley Planes Project. This project sought to improve the performance and appearance of the freight railroad that ran through Ashley, Pennsylvania, by adding lift cables. This increased tourism and increased the railroad’s coal capacity. Before, cars took almost four hours to return; after, they took less than 20 minutes.

Wire rope likewise changed the landscape (again) in Germany, in 1874, when an engineering firm called Adolf Bleichert & Co. used wire rope to build Bi-cable aerial tramways. These allowed them to mine the Ruhr Valley. Several years later, they also used wire rope to build tramways for the German Imperial Army and the Wehrmacht. These tramways were wildly successful, opening up roads in Germany and all over Europe and the USA.

Since the 1800s, manufacturers and engineers have found ways to improve wire rope, through stronger materials and material treatments, such as galvanization, and different rope configurations. Today, wire rope makes possible many heavy industrial processes. It has become a necessity of the modern world.

Strands are made by tightly twisting or braiding individual wire together. One strand could have anywhere between two and several dozen wire filaments depending on the necessary strength, flexibility, and weight capacity.

One of the most dynamic elements of wire cables is the inner core. The strands are wrapped around the core, and it can be made of different metals, fibers, or even impregnated fiber materials. For heavy applications, cores are often made of a different strand of wire called an independent wire rope core (IWRC). An IWRC has a considerable amount of flexibility and it is still very strong. In fact, at least 7.5% of the strength increase in a wire rope can be attributed to an IWRC.

While they sometimes use other metals, like aluminum, nickel, copper, titanium, and even bronze for some applications, manufacturers primarily produce wire rope from steel. This is because steel is very strong and stretchable. Among the most common types they use are: galvanized wire, bright wire, stainless steel and cold drawn steel.

Of the wire rope steels, cold drawn carbon steel wire is most popular, although stainless steel wire rope is sometimes employed as well. Stainless steel rope is most popular for its anti-corrosive properties. Bright wire rope, a type of ungalvanized steel wire rope, is also popular. For added strength and durability, galvanized steel wire rope/galvanized steel cables are a very popular choice. Galvanized aircraft cable, for example, is always a must in aerospace.

When choosing or designing a custom wire rope for your application, suppliers consider factors such as: the environment in which the rope will function, required rust resistance, required flexibility, temperature resistance, required breaking strength and wire rope diameter. To accommodate your needs, manufacturers can do special things like: make your rope rotation resistant, color code your rope, or add a corrosion resistant coating. For instance, sometimes they specially treat and coat a cable with plastic or some other compound for added protection. This is particularly important to prevent fraying if the wire rope is often in motion on a pulley.

Manufacturers and distributors identify the differences in wire cable by listing the number of strands and the amount of wires per strand so that anyone that orders understand the strength of the cable. Sometimes they are also categorized by their length or pitch. Common examples of this include: 6 x 19, 6 x 25, 19 x 7, 7 x 19, 7 x 7, 6 x 26 and 6 x 36.

More complex wire rope identification codes connote information like core type, weight limit and more. Any additional hardware like connectors, fasteners, pulleys and fittings are usually listed in the same area to show varying strengths and degrees of fray prevention.

Cable wire rope is a heavy-duty wire rope. To give it its high strength, manufacturers construct it using several individual filaments that are twisted in strands and helically wrapped around the core. A very common example of cable wire rope is steel cable.

Spiral rope is made up an assemblage of wires with round or curved strands. The assemblage features at least one outer layer cord pointed in the opposite direction of the wire. The big advantage of spiral ropes is the fact that they block moisture, water and pollutants from entering the interior of the rope.

Similarly, stranded rope steel wire is made up of an assemblage of spirally wound strands. Unlike spiral rope, though, its wire patterns have crisscrossing layers. These layers create an exceptionally strong rope. Stranded rope may have one of three core material types: wire rope, wire strand or fiber.

Wire rope chain, like all chains, is made up of a series of links. Because it is not solid, wire rope chain is quite flexible. At the same time, it is prone to mechanical failure.

Wire rope slings are made from improved plow wire steel, a strong steel wire that offers superior return loop slings and better security. The plow wire steel also shields rope at its connection points, which extends its working life. Wire rope slings, in general, provide their applications with increased safety, capacity and performance. Wire rope sling is a rope category that encompasses a wide range of sub-products, such as permaloc rope sling, permaloc bridle slings and endless slings. These and other wire rope slings may be accompanied by a wide variety of sling terminations, such as thimbles, chokers and hooks.

Wire rope offers its user many advantages. First, design of even distribution of weight among strands makes it ideal for lifting extremely heavy loads. Second, wire rope is extremely durable and, when matched properly to the application, can withstand great stress and elements like corrosion and abrasion. In addition, it is very versatile. Its many iterations and the ways in which the rope can treated means that users can get rope custom fit for virtually any application.

Depending on the type of wire rope with which you are working and your application, you may want to invest in different accessories. Among these accessories are: wire rope clips, steel carabiners, fittings, fasteners and connections.

To ensure that your wire rope quality remains high, you must regularly inspect them for wear and degradation. The right wire rope should be selected for a particular use. Watch out for performance-impacting damage like: rust, fraying and kinks. To make sure that they stay in tip-top shape, you should also clean and lubricate them as needed. Check for this need as a part of your regular inspection.

Rope care is about more than inspection. It’s also about making an effort to use and store them properly every time you use them. For example, never exceed your rope’s rated load and breaking strength. Doing so will not only cause the weakening of your cable, but it may even cause immediate breakage. In addition, always store your wire rope cable in a dry and warm area, away from those elements that could cause premature rusting or other damage. Finally, always carefully wind your wire rope when you’re done with it, so as to avoid kinks. If you follow all these tips and treat your wire rope assemblies well, they will reward you with a long and productive service life.

Always make sure that you purchase wire rope that matches your industry and regional standards. Some of the most widely referenced standards organizations for wire rope include: ISO, ASTM International and OSHA. Talk over your specifications and application with your wire rope supplier to figure out what’s best for you.

If you’re in the market for a wire rope or a wire rope assembly, the best way to know you’re getting something that will both perform well and be safe if by working with a vetted professional. Find one among the list we’ve provided on this page. Check out their profiles to get an idea of the services and products they offer. Pick out three or four to whom you’d like to speak, and reach out. Talk to them about your specifications, standard requirements and budget. Ask about lead times and delivery options. Once you’ve spoken with all of them, compare and contrast their answers. You’ll know you’ve found the one when you talk to a wire rope company that is willing to go above and beyond for your satisfaction.

The only remaining Roebling machine was designed by Charles G. Roebling (1849-1918), engineer and president of the Roebling Company from 1876 to 1918. Built in 1893, it was the largest wire-rope closing machine in its time. The machine twisted six strands around a central core rope. These seven combined in the machine"s forming die to produce a finished rope, a process known as closing. The machine was built to produce 1.5-inch rope for cable railways--80 tons could be loaded at a single spinning, which provided 30,000 feet of unspliced cable at a batch.

The demand for ever longer cable car ropes led to its design. It was a vertical machine, standing 64 feet, requiring the machine and building to be built as a unit. This and an adjacent rope room still exist. This machine was modified in 1968 to produced 5-inch wire rope, the largest at the time, for surface mining.

Charles Roebling, who graduated from Rensselaer Polytechnic in 1871 (civil engineering) was the third son of John A. Roebling (1809-1869), celebrated engineer of suspension bridges and founder of the wire and rope works. John Roebling, educated at the Berlin Polytechnic Institute, immigrated from Germany in 1831. As an engineer in western Pennsylvania, he began to replace the hemp ropes used on the inclined railways with hand- twisted wire rope.

John Roebling established his first wire rope manufacturing plant in the Chambersburg section of Trenton in 1849. Initially the rope was used in design and construction of suspension bridges by Roebling, including the Brooklyn Bridge.

By the 1880s, wire and wire rope were also produced for shipping and railway use, soon to be followed by recently developed technologies in electrical transmission, telegraphs, and elevators. Mining and cable cars also used the wire rope. Soon, the tramways and construction of the Panama Canal employed Roebling wire ropes. After the start of World War I, airplane rigging and controls called for fine wires.

The Trenton Roebling Community Development Corporation and DKM Properties Corporation are using the 80- ton rope closing machine as a centerpiece of an interactive museum-learning center for Trenton"s industrial heritage.

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Suspension bridges are nothing new; there’s one in China that until recently used bamboo that’s at least 1000 years old, and may be over 2000. But the modern suspension bridges that came along in the 1800s were something else altogether: They were cheaper to build, easier to repair, and provided plenty of leeway in case of flooding. Eventually, the bridges allowed for passage over far larger bodies of water and could withstand violent storms and the ever-increasing weight of foot and vehicle traffic in cities (not to mention drastically cutting down travel times). In the middle of the 19th century, engineer John A. Roebling saw that the Allegheny Portage Railroad was using breakable hemp ropes, leading him to create a way to spin and manufacture wire rope, a technology Roebling would soon put toward suspension bridges. Eventually, the wire could be spun and anchored on site, which helped speed up the construction process.

Roebling’s innovations led to his designs for the Niagara River Gorge Bridge, the Sixth Street Bridge in Pittsburgh, and the famed Brooklyn Bridge in the second half of the 19th century. Though the Brooklyn Bridge was John Roebling’s basic design, his son, Washington, took over the project as chief engineer following his father’s death in 1869. Then, after Washington became mostly confined to his home following a battle with decompression sickness (or “the bends”), his wife, Emily, took on many of his responsibilities. During a time when women were kept far away from STEM fields, Emily learned about cable construction, stress analysis, and other principles of suspension bridge engineering, and was a key figure in the completion of the project.

Typically, people date the modern flush toilet to John Harington, godson to Queen Elizabeth I, but there were flush toilets well before he got involved (one in Knossos, which dates back to the 16th century BCE, was even connected to a sewer). “Flush toilets like his had been available to Western Europe during the Roman Empire, but after Rome fell, Europe essentially resorted to sh***ing outside again,” Worsham says. “All of those systems fell into disrepair,” Worsham says. (Other areas of the world, like East Asia and areas of the Middle East, still used toilets even as Western Europe went backward.)

At about the same time, surgeon Charles R. Drew figured out a method for separating plasma from whole blood, and found that if whole blood wasn’t necessary, blood transfusions could be successfully performed with plasma alone. Plasma could be dried for long-term storage in blood banks. As World War II decimated Europe, Drew and the American Red Cross launched a groundbreaking program to collect donated plasma in the U.S. and ship it to Britain, essentially creating a national system for blood donation. During the war, he collaborated with the Red Cross to set up “bloodmobiles”—mobile blood donation centers that made sustaining blood banks more practical. Today, about 13.6 million units of whole blood and red blood cells are collected in the U.S. each year, saving countless lives.

The president sent her letter to the War Production Board, her idea was approved, and the rest is history. Duct tape has been a quick fix for everyone from your average joe to physicists (who use it on their particle accelerators) to astronauts (duct tape helped them make repairs on the moon). When the three crewmembers of Apollo 13 were forced to transfer to the lunar module, duct tape helped them survive—according to Northrop Grumman, the vessel was designed to hold two people for 36 hours, but after the accident, had to hold three for over 86 hours. They used the adhesive (along with cardboard, plastic bags, and space suit components) to adapt their square carbon dioxide filters to the module’s round holes. Jerry Woodfill, a NASA engineer who assisted the team from the ground, later told Universe Today, “Of course … the solution to every conceivable knotty problem has got to be duct tape! And so it was.”

Decades after people started storing food in tin cans, someone finally came up with a way to crack them open that didn’t involve a chisel and a hammer (or some other dangerous tool). In the mid-19th century, a series of inventors built what were known as lever knives—not too dissimilar to the can opener on a modern Swiss Army Knife, and by 1870, William Lyman innovated a design that included a rotary cutte. But it wasn’t until the 1920s that Charles Arthur Bunker arrived on the scene with a patent that featured handles you squeeze together to safely puncture the lid and a handle you twist to propel a sharp little wheel along the rim. If that sounds familiar, it’s probably because today’s manual can openers are pretty much the same.

Guglielmo Marconi, an Italian inventor, sent and received his first radio signals in 1894, and patented his invention in 1896 in England. Three years later, Marconi sent wireless signals across the English Channel, and two years after that, he claimed that he received a message sent from across the Atlantic (that claim, however, is controversial).

At roughly the same time Marconi was at work in Europe, inventor Nikola Tesla was working on a similar invention in America. Tesla invented the Tesla coil—which sent and received radio waves—in the 1890s. He was all set up for a long-distance experiment in 1895, but a fire broke out in his lab, interrupting the experiment. Two years later, Tesla applied for his patent in the United States.

But beyond the courtroom drama, radio was already at work transforming the world. In 1910, it helped catch Dr. Hawley Harvey Crippen, a man who was accused of killing his wife and escaping to Canada on a ship with his lover; he was caught thanks to Marconi’s wireless telegraph, which sent radio waves, and a very clever ship captain. On August 31, 1920, the first radio news program was broadcast by a station in Detroit, and the first ad played on the radio in 1922, changing the world of advertising. Radio was also used during both World Wars.

Suspension bridges are nothing new; there’s one in China that until recently used bamboo that’s at least 1000 years old, and may be over 2000. But the modern suspension bridges that came along in the 1800s were something else altogether: They were cheaper to build, easier to repair, and provided plenty of leeway in case of flooding. Eventually, the bridges allowed for passage over far larger bodies of water and could withstand violent storms and the ever-increasing weight of foot and vehicle traffic in cities (not to mention drastically cutting down travel times). In the middle of the 19th century, engineer John A. Roebling saw that the Allegheny Portage Railroad was using breakable hemp ropes, leading him to create a way to spin and manufacture wire rope, a technology Roebling would soon put toward suspension bridges. Eventually, the wire could be spun and anchored on site, which helped speed up the construction process.

Roebling’s innovations led to his designs for the Niagara River Gorge Bridge, the Sixth Street Bridge in Pittsburgh, and the famed Brooklyn Bridge in the second half of the 19th century. Though the Brooklyn Bridge was John Roebling’s basic design, his son, Washington, took over the project as chief engineer following his father’s death in 1869. Then, after Washington became mostly confined to his home following a battle with decompression sickness (or “the bends”), his wife, Emily, took on many of his responsibilities. During a time when women were kept far away from STEM fields, Emily learned about cable construction, stress analysis, and other principles of suspension bridge engineering, and was a key figure in the completion of the project.

Typically, people date the modern flush toilet to John Harington, godson to Queen Elizabeth I, but there were flush toilets well before he got involved (one in Knossos, which dates back to the 16th century BCE, was even connected to a sewer). “Flush toilets like his had been available to Western Europe during the Roman Empire, but after Rome fell, Europe essentially resorted to sh***ing outside again,” Worsham says. “All of those systems fell into disrepair,” Worsham says. (Other areas of the world, like East Asia and areas of the Middle East, still used toilets even as Western Europe went backward.)

At about the same time, surgeon Charles R. Drew figured out a method for separating plasma from whole blood, and found that if whole blood wasn’t necessary, blood transfusions could be successfully performed with plasma alone. Plasma could be dried for long-term storage in blood banks. As World War II decimated Europe, Drew and the American Red Cross launched a groundbreaking program to collect donated plasma in the U.S. and ship it to Britain, essentially creating a national system for blood donation. During the war, he collaborated with the Red Cross to set up “bloodmobiles”—mobile blood donation centers that made sustaining blood banks more practical. Today, about 13.6 million units of whole blood and red blood cells are collected in the U.S. each year, saving countless lives.

The president sent her letter to the War Production Board, her idea was approved, and the rest is history. Duct tape has been a quick fix for everyone from your average joe to physicists (who use it on their particle accelerators) to astronauts (duct tape helped them make repairs on the moon). When the three crewmembers of Apollo 13 were forced to transfer to the lunar module, duct tape helped them survive—according to Northrop Grumman, the vessel was designed to hold two people for 36 hours, but after the accident, had to hold three for over 86 hours. They used the adhesive (along with cardboard, plastic bags, and space suit components) to adapt their square carbon dioxide filters to the module"s round holes. Jerry Woodfill, a NASA engineer who assisted the team from the ground, later told Universe Today, “Of course … the solution to every conceivable knotty problem has got to be duct tape! And so it was.”

Decades after people started storing food in tin cans, someone finally came up with a way to crack them open that didn’t involve a chisel and a hammer (or some other dangerous tool). In the mid-19th century, a series of inventors built what were known as lever knives—not too dissimilar to the can opener on a modern Swiss Army Knife, and by 1870, William Lyman innovated a design that included a rotary cutte. But it wasn’t until the 1920s that Charles Arthur Bunker arrived on the scene with a patent that featured handles you squeeze together to safely puncture the lid and a handle you twist to propel a sharp little wheel along the rim. If that sounds familiar, it’s probably because today’s manual can openers are pretty much the same.

Guglielmo Marconi, an Italian inventor, sent and received his first radio signals in 1894, and patented his invention in 1896 in England. Three years later, Marconi sent wireless signals across the English Channel, and two years after that, he claimed that he received a message sent from across the Atlantic (that claim, however, is controversial).

At roughly the same time Marconi was at work in Europe, inventor Nikola Tesla was working on a similar invention in America. Tesla invented the Tesla coil—which sent and received radio waves—in the 1890s. He was all set up for a long-distance experiment in 1895, but a fire broke out in his lab, interrupting the experiment. Two years later, Tesla applied for his patent in the United States.

But beyond the courtroom drama, radio was already at work transforming the world. In 1910, it helped catch Dr. Hawley Harvey Crippen, a man who was accused of killing his wife and escaping to Canada on a ship with his lover; he was caught thanks to Marconi’s wireless telegraph, which sent radio waves, and a very clever ship captain. On August 31, 1920, the first radio news program was broadcast by a station in Detroit, and the first ad played on the radio in 1922, changing the world of advertising. Radio was also used during both World Wars.