Types of Door Latches
Latches are crafted in various materials and thicknesses, finishes and sizes to meet specific engineering specifications. Engineers can choose an electro-galvanized lock to avoid corrosion and to ensure its durability in harsh environments.
Other specifications include the level of security needed for the application. For van hooklock is more secure than a hasp, and might require the use a padlock.
Hook and Eye Latch
The hook and eye latches can easily be used to lock gates, windows cabinets, sheds, and gates. It's also ideal to secure screens, porches and storm panels. There are no fancy tools required and hooks can be screwed into place by hand in a matter of minutes. The screw points are sharp and will pierce into wood quickly and easily to provide security and stability.
To determine the proper size of the hook, you must first determine the hook type. Crosby Group (c): Look near the clevis or eye for the type of hook embossed and size. The size in inches is on one side and the size in mm is on the other. The clevis grabber hook comes with an clevis that can be attached directly to chain, whereas the eye rigging features an eye that is large and angled to use with synthetics or wire rope. Pewag(c) is the hook type size (in millimeters) and grade of the alloy are engraved in the lower portion of the bowl of the hook. Columbus CMCO McKinnon(c): Look for "HA 800" or HA 800-1000" and the hook size embossed on the lower side of the bowl, near the clevis.
Laclede(c) sells the Cartec chain hook. It is easy to identify because it features "Cartec" raised embossed at the bottom of the bowl and safety red or orange. Gunnebo(c) and CMCO Columbus McKinnon both have their names embossed on the lower portion of the hook bowl. Gunnebo also has a swivel sling hook, which is identified by an "ELD" halfway up the bowl. This hook features a wide eye that can distribute web and round slings.
Clevis Latch
A clevis latch permits users to secure a clevis hook to an anchor point and also helps to prevent the hook from coming loose during loading transfer. Clevis latches come in a variety, including ones that have spring-loaded handles and those with a safety lock. The safety lock is a great option for slip hooks since it ensures that the load won't fall off unless force is applied downwards. This feature makes slip hooks for clevis compatible with ASME B30.9 Slings standards and OSHA regulations.
A typical clevis lock consists of an clevis pin that has an end with a tang, and a head that is formed at the other. The clevises are constructed of steel, which gives strength to the latch. To prevent corrosion, they're typically coated with zinc, chrome or silver. They can also be hardened.
These latches can be used for various applications including connecting chains to the rigging equipment, to securing loads in pickup trucks and trailers. They are also employed for heavy-duty applications, such as securing cranes and machinery.
Certain clevises have been made with folded pieces while others are made from machined pieces. They have a base with a hole, whether threaded of unthreaded. They can be connected to other parts using a clevis bolt.
The clevis pin can be threaded to fit into a smooth or slotted hole. The pin is larger than a bolt and designed to withstand massive shearing forces as well as an axial load.
Certain clevis locks are made of hardened so they can stand up to the strain and vibrations of harsh environments. Some are even certified for overhead lifting, which means they can withstand a greater amount of weight than unhardened versions. In link home , a hardened latch can be plated with a variety of metals, such as nickel, silver and chromium to increase its resistance to corrosion. Powder coating or painting can be used to improve their appearance and provide the color.
Self-Closing Latch
The locking mechanism could be as complex or as simple as the overall design. The majority of these devices are built from metals for strength and durability. Powder-coated or painted latches can also enhance their appearance. Latches, no matter what materials they are made of they must be able to withstand the effects of shearing, bending and bending forces. The thickness of the latches' barrels, backing plates and cams play a major role in determining whether they are light-, medium or heavy duty.
The kind of latch you select should be determined by your security needs and the type of door or enclosure that it will be connected to. A lightweight garden gate is an example. It can be secured using hook latches. However, a robust shed requires the combination of a padlock with a hasp.
It doesn't matter whether you use an automatic latch or not. The most important thing is to ensure that it is shut properly. This minimizes the risk of accidental disengagement that could cause injuries on the job site. If you're unsure whether the hook is ready to be loaded, search for a lock with an internal stop mechanism or trigger.
Another factor to consider is the handedness. Certain types of rotary, bolt, and slam latches are made to be either left-handed or right-handed. The left-handed models are typically located in the middle of the latch and are used on doors that face towards the interior of the building. The right-handed models are put on the outside of doors and are used to open doors away from the inside.
There are also tools that can bypass the Adams Rite style commercial door locking latches on many truck and bus. These tools pass through a cutout in the side of the commercial door that is adjacent to the latch. They then reach up inside the assembly to pull the swing bar, which retracts the latch into the open position. These tools are available online or in most hardware stores that carry Adams Rite latches.
Keyed Latch
Latches are used for closing doors and gates. There are a variety of latches, and each has a particular purpose. Some common latches for doors are hook cam, clevis and hook latches, compression latches, and the rotary ones. Some latches include locking mechanisms, for example keys for locks or a panic bar. Latches can be crafted from different materials, with metals being the most well-known. They are also subjected to further processes to improve their surface quality. Common finishes for latches include polishing, plating and polishing, as well as painting, and coating with powder.
Keyed latches are made of a cylinder and requires a key to unlock. The pins and tumblers of the cylinders align with the cut on the key to unlock the latch. Some locks are equipped with extra features, such as anti-pick or anti-drill protection.
A hasp is a lock comprised of a steel band and a staple. The strap has a hole punched on one side that fits over the staple and is attached to the other end of the strap using an adjustable hinge that allows it to move. Latches can also be made from other materials such as plastics and rubbers however metals are frequently utilized due to their formability, machinability, and strength.
Metal is the most commonly used material for door latches, however, there are a few exceptions. Some latches, for example are made from plastic to help reduce weight or meet other design requirements. Other types of latches are utilized for specific applications like latches designed to be operated by pushing a lever or handle, allowing emergency exits for buildings and other environments.
There are two primary types of door latches namely knobs and levers. Levers are more prevalent on modern designs, while knobs are found on older models. Certain latches can be reversed, which means they can be opened from either side, which is suitable for doors in interiors where there are no windows. A Pawl latch is a basic type of cam latch that can be locked using one quarter-turn, or unlocked using a reverse quarter-turn. It is commonly used in electronic enclosures buses, trailers, RVs, and trucks.