Types of Door Latches
Latches can be made in a variety of materials in various thicknesses, finishes, and finishes in accordance with the engineering requirements. For instance, engineers may select a galvanized latch to prevent corrosion and maintain the durability in harsh environments.
Other specifications include the degree of security needed for the application. For example hook lock latches is more secure than a hasp, and may require the use of a padlock.
Hook and Eye Latch
The hook and eye latch is an easy-to-install method of locking gates, doors, windows, cabinets and sheds. It is also perfect for securing porches, screens and storm panels. The hook can be screwed in place by hand without the need for any fancy tools. The screw points are sharp and can be sunk into wood quickly and easily to provide stability and security.
To determine the right hook size, first determine the type of hook. Crosby Group (c): Look near the clevis or eye for the type of hook embossed and size. The size is shown on both sides. The clevis grab hook comes with a clevis for direct attachment to chain, while the eye rigging hook comes with a large eye designed for use with synthetic rope or wire rope. Pewag(c): The hook type, size in mm and the grade of alloy is engraved on the lower portion of the hook bowl. CMCO Columbus McKinnon (c) Take a look at the "HA 800" or "HA 800-1000" and the hook size on the lower portion of the bowl, near the clevis.
Laclede(c), markets the Cartec chainhook. It is easy to recognize because it features "Cartec" raised embossed at the bottom of the bowl, and safety red or orange. Gunnebo (c) and CMCO Columbus McKinnon have their names embossed in the lower portion of hook bowl. Gunnebo also has the swivel hook, that is identified by an "ELD" midway up the bowl. This hook features a wide eye that can spread webs and round slings.
Clevis Latch
A clevis latch enables the user to connect the hook using clevis to an anchor point, and also prevents the hook from coming loose during a load transfer. Clevis latches come in a variety, including ones that have spring-loaded handles as well as those that have a safety lock. The safety lock is a great option for slip hooks because it ensures that the load won't be removed unless a force is applied inward. This feature makes clevis slip hooks compatible with ASME B30.9 Slings Standards and OSHA Regulations.
A standard clevis latch has a clevis pin and tang on one side and a head that is formed on the other. These clevises are typically constructed of steel, which provides strength for the latch. They are often coated with silver, zinc, or chromium to prevent corrosion. They can also be hardened.
These latches can be used in diverse purposes, from connecting chains to the rigging equipment, to securing loads in trailers and pickup trucks. They're also used for heavy duty applications, like securing machinery and cranes.
Some clevises have been molded using folded pieces, while others are constructed from machined pieces. Their bases are equipped with a hole that's either threaded or unthreaded and they can be secured to other components using a clevis bolt or a clevis hanger.
The clevis pin is usually threaded, and it can be inserted into a hole which is smooth or slotted. The pin is larger than a bolt and is designed to withstand large shearing forces and take an axial load.
A lot of clevis locks are tempered so they can stand up to the strain and vibrations of harsh environments. Some are even rated for overhead lifting, meaning they can support a larger amount of weight than the non-hardened versions. A hardened latch may also be plated with a variety of metals like nickel or silver to increase its corrosion resistance. They can also be painted or powder coated to add color and enhance their appearance.
Self-Closing Lock
The locking mechanism can be as intricate or simple as the overall design. They are typically constructed of metal to ensure strength and durability. Latches that are painted or powder coated can also improve their appearance. Whatever the material used in their manufacture latches should be capable of enduring being bent, sheared and the forces of impact. The thickness of the barrels, backing plates, and cams are key factors in determining if they are medium-, light or heavy-duty.
You should choose the latch depending on your security requirements and the kind of enclosure or door that you intend to attach it to. A garden gate that is lightweight, for example, can be secured with hook latch. However, a sturdy shed requires a combination of a padlock with a hasp.
If you have a self-closing latch, or not the most important thing is to ensure that it is properly closed. This helps reduce the risk of accidental disengagement, which can result in workplace accidents. If you're unsure what to look for to determine whether a self-locking ring is ready to load, look for a lock that has an internal stop or trigger mechanism that prevents it from opening.
Another factor to consider is handiness. Some designs of rotary, bolt and slam latches are made to be either left-handed or right-handed. The left-handed versions are typically placed in the middle of the latch and are utilized on doors that face towards the inside of the building. The right-handed models are placed on the outside of doors and are designed to open doors away from the interior.
There are also special latch tools designed to get around the Adams Rite style commercial door locking latches on many truck and bus fleets. These tools enter the assembly through a cutout located on the side of the door adjacent to the latch. They then pull on the swing bar to retract the latch. You can locate these tools online or at most hardware stores that sell Adams Rite latch products.
Keyed Latch
Latches are used to keep doors and gates closed. There are several types of latches. Each is designed to serve a specific purpose. Common latches for doors include hook, clevis and cam latches, compression latches, and rotary ones. Some latches have locking mechanisms such as a panic bar or keyed lock. Latches can be crafted from various materials, with metals being the most well-known. They can also be subjected to further processes in order to improve the quality of their surface. The most common finishes for latches are polishing, plating, paint coating, and powder coating.
van hook lock are made of the form of a cylinder, and requires the use of a key to unlock. Cylinders contain pins and tumblers, which align with the cuts in a key to unlock the latch. Some locks are equipped with extra features, like anti-pick or anti-drill security.
A hasp is a lock that consists of a metal band and a staple. The staple is attached using hinges to the other end of a strap with slots in it. Other materials like plastic and rubber can be used to create latches, however, metals are preferred due to their formability, machinability and the strength.
Metal is the most popular material used in door latches however there are exceptions. Certain latches, like are made from plastic to reduce the weight or meet other design requirements. Other latches have specialized uses for instance, latches that are that are activated by a lever or handle. This allows emergency exits to be made in buildings and other areas.
There are two kinds of door latches: knobs and levers. Levers are more popular on newer designs, while knobs are typically found on older models. Some latches are reversible which means they can be opened from either side, which is especially useful for interior doors where there are no windows. A pawl lock is a simple version of a cam lock that can be unlocked by reversing the quarter-turn. It is typically used on electronic enclosures and in RVs, trailers, buses and trucks.