Angle blocks are tools used by wood or metal workers to cut materials at specific angles. They consist of precision-engineered metal triangles and can be used to measure angles, locate objects, and install them in the correct position. Angle block sets contain a variety of triangles with different angles, and more expensive sets offer greater […]
A step block is an adjustable tool used to lock items onto a table, typically made of metal and sold in sets or as a standalone item. They consist of two triangular pieces that can be adjusted to varying heights to support a clamp. Step blocks can be made from wood, metal, or plastic. The […]
A block is a steel casing with sheaves that assist in lifting loads. It allows for flexibility and safety in lifting operations, facilitates load rotation, and enables the use of multiple hoist sheaves for efficient and safe operation. It can also include peripheral devices for special applications. A block is an assembly to which the […]
Split-face block is a type of concrete block with a crack in the center, used for exterior construction and retaining walls. It’s made by combining cement, water, and aggregates, and then split lengthwise or crosswise for a rough texture. It’s available in various colors, textures, and shapes and is commonly used in commercial and institutional […]
A crown block is a pulley system located on the top of an oil rig that works with a movable block to increase drilling power. It requires maintenance to prevent cable damage. A crown block is a pulley located at the top of an oil rig or tower. It sits on the crown deck, which […]
Anchor blocks are used in construction to fasten materials together without compromising the integrity of the structure. They can be made of various materials, such as wood, steel, or aluminum, and are commonly used to attach wooden beams to brick or concrete walls. While other methods have emerged, anchor blocking remains a proven and useful […]
DC blocks are used in coaxial antenna systems to filter out audio and DC frequency interference. They use a capacitor to block low-level DC currents and allow higher frequency AC currents to pass through. They come in three forms and can be placed internally or externally in the system. However, external and internal/external DC blocks […]
DC blocks filter out audio and DC frequency interference in coaxial antenna systems. They use a blocking capacitor to allow RF signals to pass through while blocking unwanted frequencies. They come in internal, external, and internal/external forms, with different connector types, voltages, and maximum frequencies. Larger capacitors offer a lower cutoff frequency. Internal blocks are […]
A block valve can prevent or allow movement without restriction. Gate valves are a common type of block valve that can be operated manually or with an automated system. The valve must have no effect on flow when open and totally block flow when closed. This definition excludes globe valves and check valves. Different industries […]
Breeze blocks are lightweight concrete blocks made from a mixture of cement and ash. They can be used in construction projects and come in various densities and weights. They are also known as cinder or concrete blocks and have hollow profiles that provide insulation. They are commonly used in Great Britain and British English-speaking nations. […]
Lockout tagout is a safety procedure that involves physically locking out and tagging equipment’s power sources to prevent accidental energization during repairs and maintenance. It is a key part of OSHA regulations and requires training, written procedures, and regular inspections. Lockout and tagout devices are available from safety equipment companies and must comply with legal […]
Block houses specialize in large trades of stocks and securities for corporations, banks, and academic funds. They can impact the market and offer advantages such as better prices for large volume shares. Working as a stockbroker for block trades requires expertise and quick decision-making skills. A block house is a type of brokerage house that […]
Swivel hoists lift and rotate loads horizontally and vertically, with various designs for different needs. Load limitations must be noted to avoid overloading. Technicians should be aware of the hoist’s tendency to rotate and ensure safety measures are in place. Manufacturers can install and provide safety training. A swivel hoist is a lifting tool that […]
A chain block is a simple machine consisting of two fluted wheels with a chain wrapped around them, used to lift heavy objects. It is commonly found in auto repair shops, building construction, and manufacturing, and allows a single operator to perform tasks that would otherwise require multiple workers. A chain block is a piece […]
A block heater is a device that heats the coolant inside a vehicle’s engine block, making it easier to start in cold weather. It also prevents frost from forming on spark plugs and keeps engine oil fluid, reducing wear on critical components. It can be installed by replacing a freeze plug and connects to a […]
Beam and block flooring involves laying concrete blocks between supporting cast concrete beams, providing a cost-effective and durable solution. It is easy to install and provides insulation, acoustic resistance, and fire resistance. Custom components can be ordered, and building codes usually allow this method of construction. Beam and block is a method of pavement construction […]
Concrete masonry units (CMUs) are rectangular blocks made from Portland cement and an aggregate, with high-density or lower-density options. They can be reinforced with steel and come in various shapes, textures, and colors. CMUs are commonly used in utility and domestic construction as foundation blocks due to their strength and cost-effectiveness. Bricklayers work with CMUs […]
Block pallets are rigid platforms used for shipping goods, consisting of blocks supporting wooden deck planks. They can have partial or full four-way entries and various bottom decks. Custom block pallets are stronger and made with quality nails and lumber. After use, they can be recycled or repurposed for various projects. Pallets are rigid platforms […]
A stop block limits saw or drill travel, often used for repetitive cuts. It can be homemade or come with power tools, and must be secured to prevent movement. Steel or magnetic blocks are used in metalworking. A stop block is a device that limits the travel of a saw when it is being used […]
Block and tackle systems, invented by Archimedes, use sheaves to distribute weight and lighten loads. Additional sets can be added, but too many create friction. Longer ropes allow for more powerful lifting. Safety measures are important. A block is a simple but highly effective lifting device thought to have been invented by Archimedes. These systems […]
