How to play the game of Jacks
Jack Herer is a sativa-dominant cannabis strain that has gained as much renown as its namesake, the marijuana activist and author of The Emperor Wears No Clothes. Combining a Haze hybrid with a. What is the big difference between trolley jacks and floor jacks? This is a question asked often while shopping for the right equipment for the job. When raising a vehicle for service or maintenance, consider these two important factors: the vehicle weight and the height of the lift point. In 2018, Tony ensured the showrunners of Blue Bloods about his commitment to playing Jack while also attending higher education. The actor missed only four episodes in Season 8, making time for almost every Reagan family dinner. Set of jacks and ball. Smooth surface to play on. Object of Jacks:Be the first to go from 'onsies' to 'tensies' Set up the game: Begin by throwing your jacks onto the ground in front of you. Try and make the jacks land not too far apart or too close together. Rules for Playing Jacks. The basic way to play the game of Jacks.
Rules, directions and how to play jacks with a ball. Variations included.
Teach your children how to play the fun game of Jacks with these great variations from the past. Remember Cherries in a Basket, or Over the Fence?
What you need to play jacks
Set of jacks and ball. Smooth surface to play on.
Aztec warrior queen. Object of Jacks:Be the first to go from 'onsies' to 'tensies'
Set up the game: Begin by throwing your jacks onto the ground in front of you. Try and make the jacks land not too far apart or too close together.
Rules for Playing Jacks
The basic way to play the game of Jacks. You then throw the ball into the air … pick up one jack … then catch the ball after it bounces one time. Continue picking up the jacks one at a time. When you have collected all the jacks, throw them again and start picking the jacks up two at a time (twosies). When you get to threesies you have to pick up the three sets of three first, then pick up the left over jack. Continue on until you are at tensies. You can then declare the winner as the first one to tens, or go back down again to onesies.
Your turn continues until you either: miss the ball, fail to pick up the jacks, move a jack, or drop a jack that you have picked up. Your turn is then over and the next person goes.
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If after you throw the jacks and two (or more) jacks are touching you can either leave them, or pick up the jacks and drop them to spread them out.
Who goes first
Throw the jacks up in the air and trying to catch as many as possible with both hands together ( your palms have to be face down - thumb to thumb). Whoever catches the most jacks goes first.
Variations for the game of Jacks
Black Widow
You have to play from ones to tens without missing. https://sdog.over-blog.com/2021/02/terraria-nintendo-switch-release-date-2018.html. If you miss then you have to start again at ones.
No bouncies
Go from one to tens without letting the ball bounce before you pick up the jacks.
Double bouncies
Pick up the jacks and then catch the ball after it bounces twice.
Cherries in a basket
Cup your hand and throw the ball with the opposite hand. You have to then place the jacks in your cupped hand - one through tens.
Pigs in a Pen
Place your hand slightly cupped on the ground with the side of your hand resting on the ground. Then throw the ball with the opposite hand and slide the jacks into the 'pig pen' ones through tens.
Over the fence
Place you hand on the ground straight and you have to place the jacks on the other side of the 'fence' - ones through tens.
Around the world
After you throw the ball you have to make a circle in the air around the ball before it bounces - one to tens.
Left handed
Switch the hand you normally throw the ball with.
A jack is a mechanical lifting device used to apply great forces or lift heavy loads. A mechanical jack employs a screw thread for lifting heavy equipment. A hydraulic jack uses hydraulic power.[1] The most common form is a car jack, floor jack or garage jack, which lifts vehicles so that maintenance can be performed. Jacks are usually rated for a maximum lifting capacity (for example, 1.5 tons or 3 tons). Industrial jacks can be rated for many tons of load.
Etymology[edit]
The personal name Jack, which came into English usage around the thirteenth century as a nickname form of John, came in the sixteenth century to be used as a colloquial word for 'a man (of low status)' (much as in the modern usage 'jack of all trades, master of none'). From here, the word was 'applied to things which in some way take the place of a lad or man, or save human labour'. The first attestation in the Oxford English Dictionary of jack in the sense 'a machine, usually portable, for lifting heavy weights by force acting from below' is from 1679, referring to 'an Engine used for the removing and commodious placing of great Timber.'[2]
Jackscrew[edit]
Scissor Jack[edit]
Scissor car jacks usually use mechanical advantage to allow a human to lift a vehicle by manual force alone. The jack shown at the right is made for a modern vehicle and the notch fits into a jack-up point[3] on a unibody. Earlier versions have a platform to lift on a vehicle's frame or axle.
Electrically operated car scissor jacks are powered by 12 volt electricity supplied directly from the car's cigarette lighter receptacle. The electrical energy is used to power these car jacks to raise and lower automatically. Electric jacks require less effort from the motorist for operation.
House jack[edit]
A house jack, also called a screw jack, is a mechanical device primarily used to lift buildings from their foundations for repairs or relocation. A series of jacks is used and then wood cribbing temporarily supports the structure. This process is repeated until the desired height is reached. The house jack can be used for jacking carrying beams that have settled or for installing new structural beams. On the top of the jack is a cast iron circular pad that the jacking post rests on. This pad moves independently of the house jack so that it does not turn as the acme-threaded rod is turned with a metal rod. This piece tilts very slightly, but not enough to render the post dangerously out of plumb.
Hydraulic jack[edit]
In 1838 William Joseph Curtis filed a British patent for a hydraulic jack.[4]
In 1851, inventor Richard Dudgeon was granted a patent for a 'portable hydraulic press' - the hydraulic jack, a jack which proved to be vastly superior to the screw jacks in use at the time.[5]
Hydraulic jacks are typically used for shop work, rather than as an emergency jack to be carried with the vehicle. Use of jacks not designed for a specific vehicle requires more than the usual care in selecting ground conditions, the jacking point on a vehicle, and to ensure stability when the jack is extended. Hydraulic jacks are often used to lift elevators in low and medium rise buildings.
A hydraulic jack uses a liquid, which is incompressible, that is forced into a cylinder by a pump plunger. Oil is used since it is self lubricating and stable. When the plunger pulls back, it draws oil out of the reservoir through a suction check valve into the pump chamber. When the plunger moves forward, it pushes the oil through a discharge check valve into the cylinder. The suction valve ball is within the chamber and opens with each draw of the plunger. The discharge valve ball is outside the chamber and opens when the oil is pushed into the cylinder. At this point the suction ball within the chamber is forced shut and oil pressure builds in the cylinder.
Floor jack[edit]
In a floor jack (aka 'trolley jack') a horizontal piston pushes on the short end of a bellcrank, with the long arm providing the vertical motion to a lifting pad, kept horizontal with a horizontal linkage. Floor jacks usually include castors and wheels, allowing compensation for the arc taken by the lifting pad. This mechanism provides a low profile when collapsed, for easy maneuvering underneath the vehicle, while allowing considerable extension.
Bottle jack[edit]
A bottle jack or whiskey jack[6] is a jack which resembles a bottle in shape, having a cylindrical body and a neck. Within is a vertical lifting ram with a support pad of some kind fixed to the top. The jack may be hydraulic or work by screw action. In the hydraulic version, the hydraulic ram emerges from the body vertically by hydraulic pressure provided by a pump either on the baseplate or at a remote location via a pressure hose. With a single action piston the lift range is somewhat limited, so its use for lifting vehicles is limited to those with a relatively high clearance. For lifting structures such as houses the hydraulic interconnection of multiple vertical jacks through valves enables the even distribution of forces while enabling close control of the lift.
The screw version of the bottle jack works by turning a large nut running on the threaded vertical ram at the neck of the body. The nut has gear teeth, and is generally turned by a bevel gear spigotted to the body, the bevel gear being turned manually by a jack handle fitting into a square socket. The ram may have a second screwed ram within it, which doubles the lifting range telescopically.
Bottle jacks have a capacity of up to 50 tons and may be used to lift a variety of objects. Typical uses include the repair of automobiles and house foundations. Larger, heavy-duty models may be known as a barrel jack.[7]
This type of jack is best used for short vertical lifts.[8] Blocks may be used to repeat the operation when a greater amount of elevation is required.[9]
Pneumatic jack[edit]
Air hydraulic jack[edit]
An air hydraulic jack is a hydraulic jack that is actuated by compressed air - for example, air from a compressor - instead of human work. This eliminates the need for the user to actuate the hydraulic mechanism, saving effort and potentially increasing speed. Sometimes, such jacks are also able to be operated by the normal hydraulic actuation method, thereby retaining functionality, even if a source of compressed air is not available.
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Inflatable jack[edit]
An inflatable jack, lifting bag, or pneumatic lifting bag is an air bag that is inflated by compressed air (without a hydraulic component) in order to lift objects. The bag can be deflated to be reused later. The objects can be of a smaller load such as an automobile[10] or it can be a larger object such as an airplane.[11]
Air bags are also used by rescuers to lift heavy objects up to help victims who are trapped under those objects. There are three main types of lifting bags for rescue: high pressure, medium pressure and low pressure systems. Low-pressure bags are operated at 7.25 psi for high vertical lift in a large surface area but lower lifting capacities. Medium-pressure bags are operated at 15 psi. High-pressure bags which have higher lifting capacities are operated at pressure between 90 and 145 psi. Two air bags can be stacked together to provide a higher lift. It is recommended that no more than two bags can be used in a stacked configuration, the bigger bag must be the bottom one, and no other objects are inserted between the stacked bags. Incorrect use of stacked bags may result in a bag (or other objects) shooting out to create a dangerous projectile.[12]
Strand jack[edit]
A strand jack is a specialized hydraulic jack that grips steel cables. Often used in concert, strand jacks can lift hundreds of tons and are used in engineering and construction.
Farm jack[edit]
The farm jack also known as a railroad jack, high lift jack or kanga-jack was invented in 1905. It consists of a steel beam with a series of equally spaced holes along its length, and a hand-operated mechanism which can be moved from one end of the beam to the other through the use of a pair of climbing pins. Typical sizes for the farm jack are 4 feet (1.2 m), 5 feet (1.5 m)and 6 feet (1.8 m) referring to the length of the beam.
The jack's versatility stems from its use for such applications as lifting, winching, clamping, pulling and pushing. Gorillas gone wild. It is this versatility, along with the long travel it offers and its relative portability, which make the farm jack so popular with off-road drivers.
Safety standards[edit]
National and international standards have been developed to standardize the safety and performance requirements for jacks and other lifting devices. Facebook goldfish casino. Selection of the standard is an agreement between the purchaser and the manufacturer, and has some significance in the design of the jack. In the United States, ASME has developed the Safety Standard for Portable Automotive Service Equipment, last revised in 2014, including requirements for hydraulic hand jacks, transmission jacks, emergency tire changing jacks, service jacks, fork lift jacks, and other lifting devices.[13]
See also[edit]
References[edit]
- ^'Different Types of Jacks | Metro Hydraulic'. www.metrohydraulic.com. Archived from the original on 2016-05-01. Retrieved 2016-02-05.
- ^Oxford English Dictionary Online, quoting senses II and 10a.
- ^'9: 'In Case of Emergency''. Owner's Manual Outback (2019A ed.). Camden, New Jersey: Subaru Corporation. June 2018. p. 9–7.
Place the jack under the side sill at the front or rear jack-up point closest to the flat tire.
- ^'Patents for Inventions: Abridgments of Specifications : Class'. 1872.
- ^Dudgeon, Jl Ujb richard (Jan 25, 1859), Richard dudgeon, retrieved 2016-02-05
- ^William Cox (July 2001), 'Light Talk on Heavy Jacks', Old-House Journal: 37
- ^Brian S. Elliott (2006), 'Air-Over-Hydraulic Jacks', Compressed air operations manual, McGraw-Hill Professional, pp. 56–58, ISBN978-0-07-147526-6
- ^George William Sutcliffe (1895), Steam power and mill work principles and modern practice, Whittaker & Co., p. 828,
The bottle-jack is exceedingly firm and safe for short vertical lifts, but is not convenient for pushing in a horizontal or oblique direction.
- ^John Norman (2009), Fire Department Special Operations, Fire Engineering Books, p. 51, ISBN978-1-59370-193-2
- ^'Detroit Listening Post'. Popular Mechanics. 132 (4): 44. October 1969. ISSN0032-4558. Retrieved 9 June 2017.
- ^'Lifting Bag and Poppet Riveter Repair 'Forts''. Popular Mechanics. 81 (1): 26. January 1944. ISSN0032-4558. Retrieved 9 June 2017.
- ^'Pneumatic Lifting Bags'. Windsor Fire & Rescue Services. Archived from the original on 28 December 2011. Retrieved 6 October 2013.
- ^[1]
External links[edit]
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