Push Lock MechanismWhen you remove the inside knob, you will see a connecting rod protruding from the latch mechanism that engages the lock button. Button Push Push Pull Locate & Fasten Feature Quick & Easy Locking! Just by turning the knob / pushing the button No time wasting for tightening screws and nuts Secure Clamping! with cam locking / ball locking mechanism Visible Safety! Quarter turn fasteners have ON and OFF marking. Paddle-Handle Keyed Push-to-Close Locks Also known as paddle locks, these are often used on electrical panels, cabinets, and lockers. This disengages the lock, allowing you to swing the blade to a closed position. A quick guide to locking and unlocking your push bar …. To lock a push door when you are inside the building, you can follow these steps: Find the keyhole on the push bar. Simplex 3000 - Mechanical pushbutton lock for narrow stile doors with keyless access control in low traffic applications (single access code) Product Simplex 6200 Simplex 6200 - Programmable mechanical pushbutton lock that does not require batteries or power (single access code) Product Simplex 8100. Our wide assortment of cabinet locks includes push-to-open door latches, swing latches, roller catches, lock mechanisms, and many more. Often used in outdoor, damp, and washdown environments, these 316 stainless steel fittings will not corrode from water, salt, or chemicals. I created this mechanism on Solidworks 2015. Choose from drawer, door, and. if you need them converted just look up an online file conversion. Locking & Telescoping Mechanisms. Sometimes referred to as a cam lock latch, it’s actuated by turning the base with a key or other tool, which presses the doors or surfaces shut. An emergency release handle offers a means of escape if the door closes with someone inside an. 8mm 65Mn Spring Steel V-Shaped Hollow Lift Telescopic Locking Tube Pole Clips for Tent Umbrella Camping,Silver Tone 1 $699. Step 1: Remove Doorknob The doorknob will be held to the door by two screws. Lime: Download the app ( iOS or Android) and use code RV7HH6D. Electric Scooter Apps Lime, Bird, and Voi Come to Lisbon. Guide to Cabinet Latches – Types of Cabinet Latches. Focused on food security, which has, like 'sustainability', economic, ecological and socio-political dimensions, our research examines how urban agricultural initiatives have been promoted in Lisbon and how connecting and integrating them in urban planning. Heavy Duty Push to Open Cabinet Hardware CBRIVE® 4 Pack Magnetic Push Latch & Lock for Hidden Door Touch Latches and Catch Magnet Push Release Drawer Pull Tip on RV Closet Close Strong Pop Out, Black. Choose from our selection of push to close locks and latches, including grab latches, push-to-close latches, and more. Once the cylinder is turned, it releases the spring to push the latch in a closed position. Their design uses cams instead of bolts for latching onto the striker or door frame. Push it again and it pops open. Push-lock hose fittings (aka push-lok, push-on, insta-grip and field attachable fittings) lets technicians attach connectors and fittings to hoses in the field for low-pressure hydraulic and pneumatic systems such as shop air, general industrial, maintenance and automotive assembly, to name a few. Step 1: Meet the Mortise Lock and Door Knobs. DMK 400 with 3/4" push -through square and a pin- locking mechanism Models DMUK: With 1/2" reversible ratchet Sturdy, satin chrome-plated tubular steel. A parallel motion linkage can also be known as a push/pull linkage mechanism. For some automatic knives, a safety or lock prevents the button from being activated and the blade from being deployed. Step 1: Remove Doorknob The doorknob will be held to the door by two screws. The push-pull quick release pins are usually crafted from the solid shank or hollow with a ball, locking lug as well as a button that is backed-up through a resilient core, plug or spring. I think you're looking for a "push to eject/push to open" type latch/mechanism. Users actuate the latch by pushing a button or knob in order to open the cabinet door. Step 1: Check if the bar is pressed. Notice the set screw on the base of the knob on the right. 004 inches undersized in order to fit different hole-drilled to the normal diameter sizes. Pivoting levers and drawbars reach onto catches to shut the surfaces. Locking & telescoping mechanisms for composite tubes Flip lock clamps & twist lock rings Button clips & ball lock pins We pride ourselves in the amount of accessories we offer, specifically our selection of locking. They are used for doors that require automatic latching when closed. Wheel hub locking mechanism for wheelchair. Quick Release Pins, Detent Pins&Ball Lock Pins: Get …. Ring-Grip Locking Push-Pull Quick-Release Pins Also known as double-acting pins, these pins lock in place until you push the button or pull the ring to release the spring-loaded retaining balls. There' are a LOT of ways to accomplish it, of which you'd want to choose based on your application. The push pull locking mechanism is applied to circular connectors, making design possibilities virtually endless. How to Lock a Push Bar Door? – 3 Easy & Simple Methods. It installs and anchors to the floor next to the door’s threshold to increase door strength and prevent brute force. A smart lock is an electromechanics lock that gets instructions to lock and unlock the door from an authorized device using a cryptographic key and wireless protocol. This mortise lock set is installed in a 1930 colonial in the Boston area. Once inserted in the keyway, the key will align the pins. Two-step locking prevents accidental removal. How to Lock and Unlock Using a Key What to prepare Step 1: Check if the bar is pressed Step 2: Use the key Step 3: Lock the secondary lock (if there’s one) How. PUSH LATCH Mechanisms (DIY!) This Old Tony 1. Telescoping Tube Locking Button">Amazon. com: Telescoping Tube Locking Button. Heavy Duty Push to Open Cabinet Hardware CBRIVE® 4 Pack Magnetic Push Latch & Lock for Hidden Door Touch Latches and Catch Magnet Push Release Drawer Pull Tip on RV Closet Close Strong Pop Out, Black. Push it once and they lock the door. Results of the G-actin simulations. A parallel motion linkage can also be known as a push/pull linkage mechanism. As the latch closes, the clasp merges the two parts together. On locking the door, key locks work by turning the cylinder. Cam Locks and Latches Washdown Push-Button Tight-Hold Paddle-Handle Keyed Alike Cam Locks These tight-hold locks are IP65 and NEMA 4 rated for protection against dust, dirt, and washdowns. Glue could fail and/or look ugly. The pin tumbler lock is one of the most common locks in the world. MIONI 10 Digit Push Button Combination Padlock, 5 Digit Locking Mechanism,Blue (2 Black) 641 $1739 FREE delivery Mon, May 1 on $25 of items shipped by Amazon Or fastest delivery Thu, Apr 27 Best Seller VictorsHome Push Plunger Lock 19mm x 32mm Cylinder Head Chrome Plated Zinc Alloy Keyed Alike 2 Pack 181 $1199 ($6. When the button is pressed, the pressure is released and the blade opens. What Is a Push Button Latch? Unlike touch latches, push button latches are visible from the exterior of the cabinet surface. They have a rounded or chamfered edge to allow retraction upon impact onto the striker. from the Arabidopsis root. Ball lock fasteners clamp the part upon releasing button. Push button latches use a spring to hold the button or knob in the locked state. To raise, simply lift weight off seat and pull upward on lever until seat reaches a comfortable height. It has been known heretofore to provide friction type brake locking mechanisms for wheelchairs which are normally manipulative by the person pushing the wheelchair who can via handgrips operate. Simplex Mechanical Pushbutton Locks. Push it once and they lock the door. Description: head interchangeable square with push-button releasing and a ball- locking mechanism. The solid lines indicate the average values. The right key is also used to trigger the inside door lock mechanism to unlock the door. The male threaded ends mate with NPT, NPTF, BSPT, BSPP, and other universal threads, so you won’t have to worry about. These cipher locks use a simple numeric push button code to unlock - no keys, no cards, no electronics or computers, and no batteries! Simplex is available in many styles and offers a range of functions, finishes. Keyed Push-to-Close Locks with Push-Button-Release. Cabinet Lock Types. HAVEN has been tested to be 10x stronger than a deadbolt lock. A push-button lock holds the blade in place, but under pressure from a torsion spring. Looking for a 3d printable "push latch" or "click and lock" mechanism. This article contributes to research into new forms of participatory urban governance aimed at creating more sustainable cities. PUSH LATCH Mechanisms (DIY!). Latches: What Is It? How Does It Work? Types Of & Uses. Push lock is a very simple mechanism that locks the furniture lids, cabinets and drawers by pusing on them. Push-Lock, Häfele Push-Lock, can be operated from one side Without Catch Bolt, White, plastic Item no. To close the knife, push down on the exposed part of the spine (usually found in the middle or rear of the handle) to pop up the part of the spine in contact with the blade. Simplex 3000 - Mechanical pushbutton lock for narrow stile doors with keyless access control in low traffic applications (single access code) Product Simplex 6200 Simplex 6200 - Programmable mechanical pushbutton lock that does not require batteries or power (single access code) Product Simplex 8100. Parts of a Doorknob and How They Work. Advancement: cylindrical pin-tumbler locks. On one side is an arm, which clasps the other side. These are simple mechanical devices that lock, consisting of both a base and a cam lever. It works by using a series of pins to restrict an inner cylinder from rotating. If you were to change the placement of the fixed pivot points this would change the amount of force exerted or needed to make one movement, it would not however alter the directions of travel. The mechanism. 4 FT Aluminum Telescoping Ladder with Detachable Hook Extension. A parallel motion (push/pull) linkage uses two fixed pivot points to make the input and outputs move in the same direction. In contrast to their well-known function in initiating rhizobia nodulation in legumes, little is known about whether and how flavonoids may contribute to plant stress resistance through affecting non-nodulating bac …. 11M subscribers Subscribe 1M views 2 years ago There's something magical about push-push latching mechanisms. No tools needed to operate it, and user easily opens or closes it with heavily gloved hand. Vibration-Resistant Grab Latches with Electrical Switch. UP100® 50pcs 4. Choose from drawer, door, and cabinet locks made of stainless steel, brass, glass, and other durable materials that are high-performing and long-lasting. This disengages the lock, allowing you to swing the blade to a closed position. When locked there is no protrusion of the knob. All push button locks can be used in wet areas. A locking mechanism is a mechanical system which provides assistance to the coupling and uncoupling of two connectors and the fixation of the two parts in operating position. Slam latches are also known as push-to-close latches. The push-push locking mechanism is unlocked and the drawer 10 opens, actuated by the spring. 5mm Steel Tent Pole Clips Push Button Spring Snap Clip Locking Tube Double Pin. When unlocked, stem free of main body. Quick Release Pins, Detent Pins&Ball Lock Pins: Get A Quick ">Quick Release Pins, Detent Pins&Ball Lock Pins: Get A Quick. Do not cut the semi circular shaft that engages the main lever!. How to Lock and Unlock Using a Key What to prepare Step 1: Check if the bar is pressed Step 2: Use the key Step 3: Lock the secondary lock (if there’s one) How to Lock and Unlock Using the Thumb Turn Step 1: Check if the bar is pressed Step 2: Push the bar Frequently Asked Questions (FAQs) Conclusion. Frequently Asked Questions (FAQs). To release tilt lock mechanism and free-float, simply pull lever outward. Heavy Duty Push to Open Cabinet Hardware CBRIVE® 4 Pack Magnetic Push Latch & Lock for Hidden Door Touch Latches and Catch Magnet Push Release Drawer Pull Tip on RV Closet Close Strong Pop Out, Black. Push-to-close latches come in visible and hidden access alternatives in a variety of materials including plastic, steel and stainless steel, zinc plate, zinc nickel plate, powder coat finishes. However, when the correct key is inserted into the lock, the pins are push out of the way, and the inner cylinder is allowed to rotate and unlock the lock. Power Transmission Pressure & Temperate Control Pulling & Lifting Raw Materials Safety Supplies Sawing & Cutting Sealing Shipping Suspending (630) 833-0300 Email Us Email Us We will reply to your message within two hours. Keyed Push-to-Close Locks withEmergency Release Handle. Mount these locks horizontally to the face of doors on refrigerators and industrial enclosures with the strike plate mounted on the frame. Push-Lock featuring push-button locking mechanism, used as a deadbolt lock for doors or drawers. Their spring-loaded design withstands vibration, rattling, and shaking better than other face-mount push-to-close latches for a more secure hold. To lock chair-tilt into starting position, push lever inward. A majority of connectors are equipped with locking mechanisms. Our wide assortment of cabinet locks includes push-to-open door latches, swing latches, roller catches, lock mechanisms, and many more. The draw latch has two parts to it. Edge-Mount Keyed Push-to-Close Latches with Handle Attach these locks vertically to the side edge of doors on refrigerators and industrial enclosures with the strike plate mounted behind them on the frame. A locking mechanism can be incorporated into the head style for enhanced security. This will turn the cylinder and unlock the door. Push-Lock, Häfele Push-Lock, can be operated from one side Without Catch Bolt, White, plastic Item no. 6 Common Types of Locking Knives Explained. Linkage Mechanisms: An Informative Guide for Engineering …. DoreenBow 10 Digit Push Button Combination Padlock, 5 Digit Locking Mechanism, Chrome Plated Anti-theft Digit Push Password Lock for Locker Drawer Cabinet Door. The pin tumbler lock is one of the most common locks in the world. Linkage Mechanisms: An Informative Guide for Engineering. 702 Product details Well suited for the recreation or boating industry Locks operate by push button without a key All push button locks can be used in wet areas When locked there is no protrusion of the knob. Vibration-Resistant Grab Latches Their spring-loaded design withstands vibration, rattling, and shaking better than other push-to-close grab latches for a more secure hold. In the early 1920’s, Walter Schlage advanced the concept of a cylindrical pin-tumbler lock by placing a push-button locking. Seat Height adjustment easily raises or lowers seat to desired height. Push To Close Locks And Latches | McMaster-Carr Choose from our selection of push to close locks and latches, including grab latches, push-to-close latches, and more. How to Lock a Push Bar Door?. Some systems also implement mandatory. Locking plungers, PUSH-PUSH locking mechanism. Well suited for the recreation or boating industry. FREE delivery Mon, May 1 on $25 of items shipped by Amazon. Abrading & Polishing; Building & Grounds; Electrical & Lighting; Fabricating; Keyed Push-to-Close Locks with Push-Button-Release. To open, push in the knob and pull the tab. The fixed pivots have a moving pivot on both sides, which allows movement backwards and forwards. Prevent Your Doorknob From Locking You Out. To open, push in the knob and pull the tab. Our wide assortment of cabinet locks includes push-to-open door latches, swing latches, roller catches, lock mechanisms, and many more. Locking & Telescoping Mechanisms | Rock West Composites Home Connectors / Accessories Telescoping & Locking Mechanisms Excellent Telescoping & Locking Mechanisms Locking & telescoping mechanisms for composite tubes Flip lock clamps & twist lock rings Button clips & ball lock pins. Locking & telescoping mechanisms for composite tubes Flip lock clamps & twist lock rings Button clips & ball lock pins We pride ourselves in the amount of accessories we offer, specifically our selection of locking mechanisms! The components in the section will work with our innovative system of telescoping tubing products. PUSH LATCH Mechanisms (DIY!) Watch on Push latches are found in things like gasoline valve lids and cabinet doors. Most of the scooter companies offer a discount code that gives you free rides or credit to use against future rides. T-Handle Locking Push-Pull Quick-Release Pins. 75 delivery Jun 1 - 14 HARFINGTON 20pcs Single Button Kayak Paddle Snap Spring Clip 20mm x 3. Push To Close Locks And Latches. PUSH LATCH Mechanisms (DIY!) This Old Tony 1. Paddle-Handle Keyed Push-to-Close Locks Also known as paddle locks, these are often used on electrical panels, cabinets, and lockers. Keyed Push-to-Close Locks The low profile means less of the lock is exposed, reducing the potential for damage. This is important in the proper identification of components and. A lock for selectively allowing and preventing relative longitudinal displacement of an outer and inner telescoping tube segments. Latch equipped with lock and key so only authorized users operate it. On locking the door, key locks work by turning the cylinder. BROWSE CATALOG Abrading & Polishing Building & Grounds Electrical & Lighting Fabricating Fastening & Joining Filtering Flow & Level Control. This screw should hold the knob securely to the spindle when you turn the knob. Download files 944 Downloads 27 Likes 1 Comments Details Uploaded: January 25th, 2017 Software: SOLIDWORKS, Rendering Categories: Components, Interior design, Machine design Tags: mechanism , push , button , push-push 27 Likes View all More. PUSH LATCH Mechanisms (DIY!) This Old Tony 1. The Kershaw Launch series features a selection of these sleek, fast, instant-open knives. Choose from drawer, door, and cabinet locks made of stainless steel, brass, glass, and other durable materials that are high-performing and long-lasting. PUSH LATCH Mechanisms (DIY!) This Old Tony 1. Inside Kershaw Opening Systems. Visual explainer of how a push. dormakaba Simplex series of mechanical pushbutton door locks are a trusted keyless solution. Cleaning and Repairing an Antique Mortise Door Lock. Push-to-Close Latches Grab Latches A catch grabs and holds the strike plate to keep doors shut. Push-to-Close Latches Grab Latches A catch grabs and holds the strike plate to keep doors shut. These cipher locks use a simple numeric push button code to unlock - no keys, no cards, no electronics or computers, and no batteries! Simplex is available in many styles and offers a range of functions, finishes. Push-Push locked coupling. Push To Close Locks And Latches | McMaster-Carr Choose from our selection of push to close locks and latches, including grab latches, push-to-close latches, and more. Bird: Download the app ( iOS or Android) and use code YZJS09. How to Lock and Unlock Using a Key What to prepare Step 1: Check if the bar is pressed Step 2: Use the key Step 3: Lock the secondary lock (if there’s one) How to Lock and Unlock Using the Thumb Turn Step 1: Check if the bar is pressed Step 2: Push the bar Frequently Asked Questions (FAQs) Conclusion. com We will reply to your message within two hours. To close the knife, push down on the exposed part of the spine (usually found in the middle or rear of the handle) to pop up the part of the spine in contact with the blade. Vibration-Resistant Push-to-Close Latches with Handle. When you remove the inside knob, you will see a connecting rod protruding from the latch mechanism that engages the lock button. A locking mechanism can be incorporated into the head style for enhanced security. These are simple mechanical devices that lock, consisting of both a base and a cam lever. 702 Product details Well suited for the recreation or boating industry Locks operate by push button without a key All push button locks can be used in wet areas When locked there is no protrusion of the knob. Simplex Mechnical Pushbutton Locks. Push & Press to release coupling. BIOPHYSICS AND COMPUTATIONAL BIOLOGY Fig. Once the cylinder is turned, it releases the spring to push the latch in a closed position. The collets, nuts, contacts, and other internal parts are conveniently circular as well. PUSH LATCH Mechanisms (DIY!) Watch on Push latches are found in things like gasoline valve lids and cabinet doors. Push-lock hose fittings (aka push-lok, push-on, insta-grip and field attachable fittings) lets technicians attach connectors and fittings to hoses in the field for low-pressure hydraulic and pneumatic systems such as shop air, general industrial, maintenance and automotive assembly, to name a few. (B, Left) Representative snapshot of G-actin interacting with POTAP20 from the end of the simulation. Cam levers are typically used to shut and secure cabinet doors, as well as a number of other enclosures. MIONI 10 Digit Push Button Combination Padlock, 5 Digit Locking Mechanism,Blue (2 Black) 652 $1739 FREE delivery Tue, May 23 on $25 of items shipped by Amazon Or fastest delivery Fri, May 19. Push Button Locking Mechanism. , They are available in surface and flush to panel mount, snap-in and adhesive mounting styles, and locking and non-locking grip styles, including lift pa. The benefits of a lockback include reliable strength, safety, and ambidextrous operation. In locked state, dowel pins in main body hold stem. The push-push locking mechanism is unlocked and the drawer 10 opens, actuated by the spring. Common Door Lock Problems & Repairs. Two-step locking prevents accidental removal. Cam latches are often available in different materials, including stainless steel and zinc. 2-8mm Push Button Spring for 12-50mm Tube Locking Tube Pin Button Mounting Spring Clips for Tent Pole 3 $1159 $2. If the doorknob has a lock, look for a jagged slit on the door’s outward-facing knob. Universal-Thread Stainless SteelPush-to-Connect Tube Fittings for Air and Water. Do not cut the semi circular shaft that engages the main lever! Ensure the remaining stub is turned to the unlock position and reassemble the knob. DGHAOP Kayak Paddle Spring Clips 4PCS 9. From SENDCANCEL Customer Service Email: sales@mcmaster. Ask Question Comment Step 2: What's a Spindle?. (A) Minimum distances of the actin monomer to the head groups of the lipid bilayer as a function of time. Ring-Grip Locking Push-Pull Quick-Release Pins Also known as double-acting pins, these pins lock in place until you push the button or pull the ring to release the spring-loaded retaining balls. Keyed Push-to-Close Locks withEmergency Release Handle. Simply push the button to fire the blade. dormakaba Simplex series of mechanical pushbutton door locks are a trusted keyless solution. The right key is also used to trigger the inside door lock mechanism to unlock the door. How Does a Door Lock Work? Things You Should Know!. Also called pull-down latches and toggle latches. A parallel motion linkage can also be known as a push/pull linkage mechanism. The push-pull quick release pins are usually crafted from the solid shank or hollow with a ball, locking lug as well as a button that is backed-up through a resilient core, plug or spring. 1-48 of over 2,000 results for "Push Button Lock" Results Price and other details may vary based on product size and color. Automatic knives are great for opening your. The circular design makes applying different types of keying systems easy. The assemblies handle pressures up to 350 psi. They secures them by holding them in teh closed. 2) Hold the door knob on the other side of the door, and turn the loose door knob clockwise until it fits snugly. Keyed Push-to-Close Locks The low profile means less of the lock is exposed, reducing the potential for damage. Freenow: Download the app ( iOS or Android) and use code james. Paddle-Handle Keyed Push-to-Close Locks Also known as paddle locks, these are often used on electrical panels, cabinets, and lockers. The indexing pin in the locking plungers GN 514 is moved via a so-called cardioid mechanism. Generally, locks are advisory locks, where each thread cooperates by acquiring the lock before accessing the corresponding data. Flavonoids are stress-inducible metabolites important for plant-microbe interactions. Slam latches are also known as push-to-close latches. Connector with Push Pull Locking Mechanism Design. (B, Middle)G-actin density with respect to the bilayer normal. It has been known heretofore to provide friction type brake locking mechanisms for wheelchairs which are normally manipulative by the person pushing the wheelchair who can via handgrips operate. Push-Lock, Häfele Push-Lock, can be operated from one side Without Catch Bolt, White, plastic Item no. Push-To-Lock, Push-To-Release Mechanism Latch locked or unlocked with single motion of hand. Mountings vary, from concealed to wings and knobs. A locking mechanism can be incorporated into the head style for enhanced security. It comprises a tubular cam adapted to plug into and rotate with. You can tighten a simple interior mortise lockset like the one shown at left as follows: 1) Loosen the setscrew on the door knob’s shank. Push-lock hose fittings (aka push-lok, push-on, insta-grip and field attachable fittings) lets technicians attach connectors and fittings to hoses in the field for low-pressure hydraulic and pneumatic systems. [0021] On deceleration of a vehicle with the housing 12 and drawer 10 built into its dashboard, a. Push-to-Close Latches with Handle. This is Push-Push Mechanism. Art of Lock Picking">Parts of a Doorknob and How They Work. Edge-Mount Keyed Push-to-Close Latches with Handle Attach these locks vertically to the side edge of doors on refrigerators and industrial enclosures with the strike plate mounted behind them on the frame. 11M subscribers Subscribe 1M views 2 years ago There's something magical about push-push latching mechanisms. Simplex Mechanical Pushbutton Locks. T-Handle Locking Push-Pull Quick-Release Pins. The push-pull quick release pins are usually crafted from the solid shank or hollow with a ball, locking lug as well as a button that is backed-up through a resilient core, plug or spring. The smooth ring handle won't catch on parts. Then tighten the screw until you feel it resting against the flat side of the spindle. A parallel motion (push/pull) linkage uses two fixed pivot points to make the input and outputs move in the same direction. Locks operate by push button without a key. Remove these screws and the doorknob should pull apart into three pieces: the interior knob, the exterior knob, and the latch mechanism that sits inside the door. Cut this off so it no longer engages the lock button. Commercial Lock Sets An exit device (also known as a panic bar, crash bar, panic device, or a push bar) is a form of lever tumbler lock for unlocking a door during emergency conditions. Draw latches. MIONI 10 Digit Push Button Combination Padlock, 5 Digit Locking Mechanism,Blue (2 Black) 652 $1739 FREE delivery Tue, May 23 on $25 of items shipped by Amazon Or fastest delivery Fri, May 19 Master Lock Portable Key Lock Box with Push Button Resettable Combination Lock, Outdoor Key Lock Box 2,897 $3899 FREE delivery Tue, May 23. Mechanisms: An Informative Guide for Engineering ">Linkage Mechanisms: An Informative Guide for Engineering. Quick Release Pins, Detent Pins&Ball Lock Pins: Get A Quick. Step 3: Lock the secondary lock (if there's one) How to Lock and Unlock Using the Thumb Turn. Simplex 1000 - Mechanical pushbutton lock for exterior access that is. An emergency release handle offers a means of escape if the door closes with someone inside an enclosure. What Is a Push Button Latch? Unlike touch latches, push button latches are visible from the exterior of the cabinet surface. Simplex Mechanical Pushbutton Locks.