Types of Door Latches
Latches are made from various materials as well as finishes and thicknesses depending on the engineering requirements. For instance, engineers can select a galvanized latch to avoid corrosion and ensure the durability even in harsh environments.
Other specifications include the level of security required for the application. Hook lock latches for instance, is more secure than hasps, and may require the use of a padlock.
Hook and Eye Latch
The hook and eye latch is a simple method to secure gates, doors, windows cabinets and sheds. It's also ideal for securing storm panels, porches and screens. The hook can be screwed into position by hand without the need for any fancy tools. The sharp screw points bite into wood quickly and effectively to provide extra security and stability.
To determine the proper hook size, first identify the type of hook. Crosby Group(c) Look for the type of hook and size embossed close to the eye or the clevis of the hook. The size is clearly displayed on both sides. The clevis grab hook has the clevis to attach directly to chain, while the eye rigging hook features a large eye designed for use with wire rope or synthetics. Pewag(c) hook type, size (in millimeters) and grade of the alloy are engraved on the lower part the hook bowl. CMCO Columbus McKinnon (c): Look at the "HA 800" or "HA 800-1000" and the size of the hook on lower part of the bowl, close to the clevis.
Laclede(c) markets the Cartec chain hook. It is easy to recognize because it features "Cartec" embossed on the bottom of the bowl, and safety red or orange. Gunnebo(c) and CMCO Columbus McKinnon both have their names embossed on the lower section of the hook bowl. Gunnebo also has an swivel sling hook which is identified by an "ELD" halfway up the bowl. This hook has a wide eye that can spread webs and round slings.
Clevis Latch
A clevis latch permits the user to attach the hook of a clevis to an anchor point, and it also helps prevent the hook from coming loose during the transfer of a load. Clevis latches are available in different designs, such as those with spring-loaded handles or ones equipped with safety locks. The safety lock is ideal for slip hooks because it guarantees that the load will not be removed unless a force is applied downwards. This feature makes clevis slip hooks compatible with ASME B30.9 Slings standards and OSHA regulations.
A typical clevis latch comes with the clevis pin as well as tang on one side and a shaped head on the other. These clevises, usually constructed from steel to give strength to the latch and are usually plated with zinc, silver, or chromium. They're usually plated with zinc, silver, or chromium to resist corrosion. They can also be tempered.
These types of latches are suitable for diverse purposes such as connecting chains, rigging equipment to securing loads in pickup trucks and trailers. These latches are also employed in heavy-duty tasks such as securing cranes and machinery.
Some clevises have been molded using folded pieces, while others are made from machined pieces. Their bases are equipped with an opening that is threaded or not, and they can be attached to other components using an clevis bolt, or a hanger for clevis.
The clevis pin is threaded and fitted into an open or slotted hole. The pin is larger in diameter than a bolt and is designed to withstand massive shearing stresses and be able to withstand 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 designed for overhead lifting. This means that they can support more weight than the non-hardened models. what is it worth that is made of hardened material can be plated in a variety metals such as nickel or silver to increase its corrosion resistance. They can also be powder coated or painted to add color and improve their appearance.
Self-Closing Latch
The locking mechanisms of latches can be as simple or intricate as the overall design. These devices are often constructed of metal to ensure strength and durability. Powder-coated or painted latches can also improve their appearance. Latches, regardless of the materials they are made of they must be able to withstand the effects of shearing, bending and bending forces. The thickness of the barrels, backing plates and cams are key factors in determining if they are light-, medium-, or heavy-duty.
You should choose the latch depending on your security needs and the kind of door or enclosure that you intend to attach it to. For instance, a light garden gate can be secured with a hook latch, while the door to a shed that is strong requires a padlock and hasp combination.
It doesn't matter if utilize an automatic latch or not. The most important thing is to ensure that it is closed properly. This helps reduce the risk of accidental disengagement, which can cause workplace accidents. If you're not sure whether the hook is ready to be loaded, look for a lock with an internal stop mechanism or trigger.
Another important consideration is the hands. Certain types of rotary, bolt and slam latches are specifically made to be either left-handed or right-handed. Left-handed models are usually placed in the middle of the latch and are utilized on doors that face inward toward the inside of the building. The right-handed models are placed on the outside of doors and are utilized for doors that are facing away from the inside.
There are also specialized latches designed to get around the Adams Rite style commercial door locking latches found on a lot of bus and truck fleets. These devices enter the assembly through a cutout located on the side of the door adjacent to the latch. They then pull the swing bar to retract the latch. You can locate these tools on the internet or in most hardware stores that sell Adams Rite latch products.
Keyed Latch
Latches are used to close gates and doors. There are numerous kinds of latches, and each type has a particular purpose. Common latches used for doors include hook or clevis latches, cam and cam, compression latches, and those that rotate. Some latches also include locking mechanisms, for example the keyed lock or panic bar. Metals are the most common material for latches but other materials can also be used. They are also subjected to additional processes in order to improve their surface quality. The finishes available for latches include painting, powder coating, and polishing.
Keyed latches are latch with a cylinder that requires a specific key to unlock it. The pins and tumblers inside the cylinders align with the key's cut to unlock the latch. Some locks include extra features, such as antidrill or antipick security.
A hasp is a type of latch comprised of a steel band and a staple. The strap has a slot punched on one side which fits over the staple and the staple is connected to the other end of the strap using an adjustable hinge that allows it to swing. Other materials, such as plastic and rubber are used to create latches, but metals tend to be preferred due to their shapeability, machinability, and the strength.
Metal is the most common material used for door latches, however, there are a few exceptions. For instance, some latches are crafted from plastics to reduce the weight of a door or to meet other requirements for design. Other latches have specialized uses like latches designed to be activated with the lever or handle. This allows emergency exits to be made in buildings as well as other settings.
There are two primary types of door latches, namely knobs and levers. Knobs are generally used on older doors, while levers are more common in the latest designs. Certain latches can be opened on either side. This is ideal for doors that are with no windows. A Pawl lock is a basic version of a cam-lock which can be unlocked by reverse one quarter-turn. It is commonly used on electronic enclosures and in RVs, trailers, buses and trucks.