question: How do those “push and twist” drug bottles work?
comment: They utilize a thread with an interruption on the bottle and a small bit of spring tension on the cap. Unless the cap is pushed down it cannot interact with these thread to come off.
passages: One method for tying the bottle sling is similar to the loop-and-weave method used to tie the jury mast knot and the trumpet knot. The knot is begun by making a bight in a piece of rope and folding the bight back on itself to make two separated loops that are mirror images of each other. Lay one loop on top of the other so that they overlap slightly and create a cat's eye shaped hole above a triangular shaped hole between the two loops. Make a bird's beak with your index and thumb and weave them down through the loop, up through the cat's eye and down through the bottom loop, bunching the coils of rope against your fingers. Pinch the section of rope that was the bottom of the triangle and flip the coils over the pinched section. The flip may take a little practice, but the pinched section should become a short bight hanging off a circular shaped knot.
   Bottle sling
  
  The bottle sling (or jug sling/ Scoutcraft Knot) is a knot which can be used to create a handle for a glass or ceramic container with a slippery narrow neck, as long as the neck widens slightly near the top.
   While classed with binding knots, such as the reef knot and miller's knot, the bottle sling is able to perform a function for which most other binding knots are unsuited. The bottle sling's specific form allows it to grip a cylinder, assuming it has even a slight flare or collar, and lift it along its axis when the knot is loaded by all four strands. With appropriate size cord, most wine bottles can be reliably suspended with this knot.
  
  Section::::History.
   A gyropalette performs the same task automatically on many bottles at the same time, and in a shorter period of time. The bottles are placed in a cage, and are moved in a way which emulates the action of a remueur by means of motors and automatic controls.
   Section::::Corkscrews.:Twin prong cork puller.
  
  The twin prong cork puller, also called the Butler's Friend, is shaped like a large key with a squared oval handle about 5 cm × 8 cm, and two thin metal strips, approximately 10 cm long, 5 mm wide, and 0.5 mm thick, descending in tandem from the center of the handle. The two strips are spread open and then wiggled into the space between the cork and the bottle on either side. Once fully in place, a turn and pull of the handle causes friction to turn the cork and pull it out of the bottle.
  
  Section::::See also.
   Medical syringes are sometimes used without a needle for orally administering liquid medicines to young children or animals, or milk to small young animals, because the dose can be measured accurately and it is easier to squirt the medicine into the subject's mouth instead of coaxing the subject to drink out of a measuring spoon.
  
  Section::::Medical syringes.:Tip designs.
  
  Syringes come with a number of designs for the area in which the blade locks to the syringe body. Perhaps the most well known of these is the Luer lock, which simply twists the two together.
   The "flip-top," "swing-top" or "Grolsch" style consists of a plastic or ceramic stopper held in place by a set of wires. Prior to the invention of the crown cork, this was the dominant method of sealing bottles that contained carbonated liquid.
  
  Section::::Types.:Screw cap.
  
  Screw on closures are the most common bottle caps. They are easy to apply by a wide variety of automated equipment, or they can be applied by hand.
   Section::::Varieties.:Wall-mounted.
  
  Works the same as the lever variation, except that it is attached to the wall, to allow for simpler bottle-opening, which can be done with one hand. The bottle cap can fall into a bottle cap catcher mounted below the opener, or you can retrieve it after removal from the bottle. 
  
  A variant to this are similar types of openers mounted on older vending machines.
  
  Section::::Varieties.:Magnetic catch bottle opener.
  
  This is a bottle opener with a magnet to catch the lids. 
  
  Section::::Varieties.:Multi-opener.
   BULLET::::4. While the lower looper is moving from left to right, the upper looper advances from right to left. The tip of the upper looper passes behind the lower looper and picks up the lower looper thread and needle thread.
  
  BULLET::::5. The lower looper now begins its move back into the far left position. As the upper looper continues to the left, it holds the lower looper thread and needle thread in place.
   BULLET::::- Peelables—layered self-adhering labels that peel off to uncover new ones, licensed to 3M and BASF for video cassettes and computer diskettes.
  
  BULLET::::- Fastap keypad, formerly known as OneTouch. Recognized by the Guinness Book of World Records as the world's smallest keypad
  
  BULLET::::- Wedgie bicycle seat lock, to prevent bicycle seats from being stolen
  
  BULLET::::- Trace Fast Typing Method (US Patent 7175438) - Acquired by Nuance Communications.
  
  BULLET::::- Improved Vascular Splicing Method" using biocompatible O-rings to minimize blood contamination and reduce the time to seal blood vessels during surgery;
   Section::::Description.
   Many small tire pumps come with a mounting bracket intended to be mounted alongside a bottle cage.
  
  The Trek Soho 3.0 comes with a stainless steel coffee mug designed to fit in the bottle cage mounted on the front side of the seat tube.
  
  In addition to the fairly standard cycling water bottle, cages have been produced to hold commercial 1 liter and 1.5 liter water bottles.
  
  Section::::History.
   Twist 'n Go
  
  Twist 'n Go is a type of container created for Pepsi by the Palo Alto-based design firm, IDEO. 
  
  This bottle was intended to replace the waxed paper cups typically used in convenience stores or for take-out orders in fast food restaurants by overcoming some of the limitations of the commonly used waxed paper cup. Pepsi believed that the more durable plastic is better suited for travel than the weaker paper cups while allowing for reuse.
   As the name suggests, the primary use for this knot is to suspend bottles, jugs, and other items with similar shapes. The space at the center of the knot is dropped over the top of a bottle or similar object. Firmly pulling on all four ends emerging from the knot tightens it against the neck of the bottle. Looping the running ends through the bight and tying them together will make a sling that grips and can be used to lift the bottle. This provides a convenient method of lowering a beverage bottle from a boat into the water to chill.
   In 2017, the Fair Work Commission found an electrician was fairly fired for not attending work, as he used a Twisties packet as a Faraday cage to negate the GPS function on his PDA.
  
  Chef Adriano Zumbo has created a lime and cheese Twisties zumbaron, which is a cheesy Twisties-flavoured macaron with lime filling.
  
  Section::::Ingredients and manufacturing process.
   While most lever-type bottle openers can be used in either configuration, the designed use can be determined if one of the edges is curved, in which case this edge is designed to sit in the middle of the crown, as the curve concentrates pressure, deforming the crown, and a curved edge does not connect with as much of the crown edge, hence being suboptimal and slipping more frequently if used to connect with the crown edge. This difference can be seen in comparing the traditional opener and contemporary bar blade at right.
  
  Section::::Corkscrews.
  
  Section::::Corkscrews.:Waiter's friend.
   The Codd-neck bottle was designed and manufactured with thick glass to withstand internal pressure, and a chamber to enclose a marble and a rubber washer in the neck. The bottles are filled upside down, and pressure of the gas in the bottle forced the marble against the washer, sealing in the carbonation. The bottle is pinched into a special shape to provide a chamber into which the marble is pushed to open the bottle. This prevents the marble from blocking the neck as the drink is poured.
  
  Some older examples had the bullet shape of soda bottles.
  
  Section::::Popularity.
   In the United States, child safety locking mechanisms have been required by law since 1970 on all containers for potentially dangerous medicines and household cleaning products. These laws are enforced by the Consumer Products Safety Commission. These locking mechanisms may take several forms, but the most common is a design that requires a tab to be pressed firmly as the lid is twisted. Great strength and dexterity are not required to open the bottle, but the process is deliberately made to be unintuitive, and the children who might recklessly eat pills are unable to decipher the opening instructions. Parents and guardians are firmly admonished to keep all such containers out of the reach of children anyway, as no locking device is foolproof. It has become common practice in households to keep medicines and pills in high cabinets (sometimes locked) for safety. Cleaning agents, however, are still generally kept under sinks, where they are accessible.
   The 'waiter's friend' or 'wine key' consists of a flat housing (often plastic covered) similar to a Swiss army knife with a corkscrew and lever (which doubles as crown cork opener) with either a knife or auto-foiler to remove the foil top of wine bottles and then the cork. Designed to be screwed in to within 1 full rotation before the end of the screw (more will pierce the bottom of the cork and result in extra flotsam on the surface of your wine) before levering out the cork.
  
  Section::::Corkscrews.:Mounted corkscrew.
   Section::::Usage.
   The comedy-drama series "Leverage" had a bottle episode. "The Bottle Job", from Season 2, is confined to Nathan Ford's (Timothy Hutton) apartment; McRory's, the bar it sits over; and the bar's back room. It alludes to the concept by forcing the "Leverage" team to execute a late betting scam, which normally takes days or weeks just to set up, in only an hour and a half; Ford explicitly calls it ""The Wire" in a bottle". (Ford, a recovering alcoholic, also reverts to drinking as part of the scam; "hitting the bottle" is an expression for heavy drinking.)
   A second messenger can be arranged to be released by the inverting mechanism, and slide down the cable until it reaches another Nansen bottle. By fixing a sequence of bottles and messengers at intervals along the cable, a series of samples at increasing depth can be taken from a single action.
   Currently, the design of the low dead space needle incorporates a plastic neck that fits within the neck of a standard syringe hub.
  
  Section::::Detachable Needle Design.:Low dead space syringe.
  
  This design is accomplished by using a standard syringe body with an extended plunger that inserts into the neck of the syringe body to expel more fluid from the syringe.
  
  Section::::WHO Guidelines for people who inject drugs.
   BULLET::::- The Ponar Type Sampler is modified also and has additional springs which are released upon bottom contact which might be helpful for harder surfaces.
  
  BULLET::::- The Young Modified Grab Sampler includes a metal frame for additional stability.
  
  Section::::External links.
  
  BULLET::::- Instrument description at Woods Hole Oceanographic Institute
  
  BULLET::::- Bottom Sediment Grab Samplers as offered by the Rickly Hydrological Company
  
  BULLET::::- Rees et al. (2009): Guidelines for the study of the epibenthos of subtidal environments; Copenhagen: International Council of the Exploration of the Sea (ICES Techniques in Marine Environmental Sciences 42) - 90 p.
   Another widely available Nalgene Outdoor product is a 650 ml (22 fl oz) "All-Terrain" or "bike" bottle. The bottle is made from low-density polyethylene (LDPE), and its screw top has two moving parts — a drinking nozzle that seals until snapped open by pulling on it, and a hinged polycarbonate dome, that when closed both snaps the nozzle closed and protects the nozzle against contamination. Unlike traditional Nalgene containers, this item can be damaged and potentially ruined by filling it with very hot water.
  