|
Handles
A handle is a part of, or an attachment to, an object that allows it to be grasped and manipulated by hand. The design of each type of handle involves substantial ergonomic issues, even where these are dealt with intuitively or by following tradition. Handles for tools are an important part of their function, enabling the user to exploit the tools to maximum effect. Package handles allow for convenient carrying of packages. General design criteria The three nearly universal requirements of are: # Sufficient strength to support the object, or to otherwise transmit the force involved in the task the handle serves. # Sufficient length to permit the hand or hands gripping it to comfortably exert the force. # Sufficiently small circumference to permit the hand or hands to surround it far enough to grip it as solidly as needed to exert that force. Specific needs Other requirements may apply to specific handles: * A sheath or coating on the handle that provides friction agains ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Package Handle
Package handles, or carriers, are used to help people use packaging. They are designed to simplify and to improve the ergonomics of lifting and carrying packaging, packages. Handles on consumer packages add convenience and help facilitate use and pouring. The effect of handles on package material costs and the packaging line efficiencies are also critical. A handle can be defined as “an accessory attached to a container or part for the purpose of holding or carrying.” Sometimes a handle can be used to hang a package for dispensing or use. Handles can be built into a package, sometimes in the form of hand holes or hand holds. They can also be attached to a finished complete package after filling and closing, or even at the point of purchase. The performance and design criteria for handles are often detailed in a contract or specification. For example handles for some US government containers are specified in Mil-Std-648. History People have long seen a need to have packag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doorknob
A door handle or doorknob is a handle used to open or close a door. Door handles can be found on all types of doors including: exterior doors of residential building, residential and commercial buildings, internal doors, cupboard doors and vehicle doors. There are many designs of door handle, depending on the appropriate use. A large number of handles, particularly for commercial and residential doors, incorporate latching or locking mechanisms or are manufactured to fit to standardised door locking or latching mechanisms. The most common types of door handle are the lever handle and the doorknob. Door handles can be made out of a plethora of materials. Examples include brass, porcelain, cut glass, wood, and bronze. Door handles have been in existence for at least 5000 years, and its design has evolved since, with more advanced mechanism, types, and designs made. Some door handles are also arm- or foot-operated to reduce transmission of contagious illnesses. Types *The most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hammer
A hammer is a tool, most often a hand tool, consisting of a weighted "head" fixed to a long handle that is swung to deliver an impact to a small area of an object. This can be, for example, to drive nail (fastener), nails into wood, to shape metal (as with a forge), or to crush Rock (geology), rock. Hammers are used for a wide range of driving, shaping, breaking and non-destructive striking applications. Traditional disciplines include carpentry, blacksmithing, war hammer, warfare, and mallet percussion, percussive musicianship (as with a gong). Hammering is use of a hammer in its strike capacity, as opposed to pry bar, prying with a secondary claw or grappling with a secondary hook. Carpentry and blacksmithing hammers are generally wielded from a stationary stance against a stationary target as gripped and propelled with one arm, in a lengthy downward plane (geometry), planar arc—downward to add kinetic energy to the impact—pivoting mainly around the shoulder and elbo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Claw-hammer
Clawhammer, sometimes called down-picking, overhand, or most commonly known as frailing, is a distinctive banjo playing style and a common component of American old-time music. The style likely descends from that of West African lutes, such as the akonting which are also the direct ancestors of the banjo. The principal difference between clawhammer style and other styles is the picking direction. Traditional picking styles (Banjo#Classic_era%2C_1880s-1910s, classic banjo), including those for folk music, folk, Bluegrass music, bluegrass, and classical guitar, consist of an up-picking motion by the fingers and a down-picking motion by the thumb; this is also the technique used in the Scruggs style for the banjo. Clawhammer picking, by contrast, is primarily a down-picking style. The hand assumes a claw-like shape and the strumming finger is kept fairly stiff, striking the strings by the motion of the hand at the wrist or elbow, rather than a flicking motion by the finger. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hammer Throw
The hammer throw (HT for short) is one of the four throwing events in regular outdoor track-and-field competitions, along with the discus throw, shot put and Javelin throw, javelin. The hammer used in this sport is not like any of the tools also called by that name. It consists of a metal ball attached by a steel wire to a grip. These three components are each separate and can move independently. Both the size and weight of the ball vary between men's and women's events. The women's hammer weighs for college and professional meets while the men's hammer weighs . History Tradition traces it to the Tailteann Games (ancient), Tailteann Games in Hill of Tara, Tara, Ireland, around the year 1830 BC. Some time later the Celtic warrior Cú Chulainn, Culchulainn reputedly took a chariot axle with a wheel still attached, spun it around and hurled it a long way. The wheel was later replaced by a rock with a wooden handle attached. A sledgehammer began to be used for the sport in Scot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Golf Club
A golf club is a club used to hit a golf ball in a game of golf. Each club is composed of a shaft with a grip and a club head. Woods are mainly used for long-distance fairway or tee shots; irons, the most versatile class, are used for a variety of shots; hybrids that combine design elements of woods and irons are becoming increasingly popular; putters are used mainly on the green to roll the ball into the hole. A set of clubs is limited by the rules of golf to a maximum of 14 golf clubs, and while there are traditional combinations sold at retail as matched sets, players are free to use any combination of legal clubs. The most significant difference between clubs of the same type is ''loft'', or the angle between the club's face and the vertical plane. It is loft that is the primary determinant of the ascending trajectory of the golf ball, with the tangential angle of the club head's swing arc at impact being a secondary and relatively minor consideration (though these small ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Racquet
A racket or racquet is an item of sporting equipment used to strike a ball or shuttlecock in a variety of sports. A racket consists of three major components: a widened distal end known as the ''head'', an elongated handle known as the ''grip'', and a reinforced connection between the head and handle known as the ''throat'' or ''heart''. The head of the racket forms a flattened firm surface, known as the ''face'', which is used to strike the ball or shuttlecock. In the strictest sense, the word "racket" specifically refers to a striking implement with a mesh face made of interlaced, tightly stretched string (structure), strings fixed on an ovoid frame known as the ''rim''. This type of racket is used in sports such as tennis, badminton, and racquetball. Some rackets have a rigid one-piece head with a solid or fenestrated face instead of a meshwork of strings. Such rackets are called a paddle or bat, and are used in sports such as table tennis, pickleball and padel. Collectively ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baseball Bat
A baseball bat is a smooth wooden or metal Club (weapon), club used in the sport of baseball to hit the Baseball (ball), ball after it is thrown by the pitcher. By regulation it may be no more than in diameter at the thickest part and no more than in length. Although historically bats approaching or 48 oz were swung, modern bats of are common, topping out at . Design A baseball bat is divided into several regions. The "barrel" is the thick part of the bat, where it is meant to hit the ball. The part of the barrel best for hitting the ball, according to construction and swinging style, is often called the "Sweet spot (sports), sweet spot." The end of the barrel is called the "top", "end", or "cap" of the bat. Opposite the cap, the barrel narrows until it meets the "handle", which is comparatively thin, so that batters can comfortably grip the bat in their hands. Sometimes, especially on metal bats, the handle is wrapped with a rubber or tape "grip". Finally, below the handle i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hatchet
A hatchet (from the Old French language, Old French , a diminutive form of ''hache'', 'axe' of Germanic origin) is a Tool, single-handed striking tool with a sharp blade on one side used to cut and split wood, and a hammerhead on the other side. Hatchets may also be used for hewing when making flattened surfaces on logs; when the hatchet head is optimized for this purpose it is called a hewing hatchet. The earliest known use of the noun hatchet is in the Middle English period (1150—1500) Although 'hand axe' and 'hatchet' are often used interchangeably in contemporary usage, 19th and 20th century American manufacturers and retailers (Collins, Kelly, Vaughan, Warren, Mann; Simmons, Shapleigh, Sears, et al.) unanimously distinguished hatchets from hand axes in their product catalogs, listing them in separate groupings. A ''hand axe'' (also known by terms including "camp axe", "belt axe", "hunters axe" and others) is a short-handled woods tool. A ''hatchet'' is a short-handled co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mallet
A mallet is a tool used for imparting force on another object, often made of rubber or sometimes wood, that is smaller than a maul or beetle, and usually has a relatively large head. General overview The term is descriptive of the overall size and proportions of the tool, and not the materials it may be made of, though most mallets have striking faces that are softer than steel. Mallets are used in various industries, such as upholstery work, and a variety of other general purposes. It is a tool of preference for wood workers using chisels with plastic, metal, or wooden handles, as they give a softened strike with a positive drive. * Wooden mallets are usually used in carpentry to knock wooden pieces together, or to drive dowels, chisels and to apply pressure on joints. A wooden mallet will not deform the striking end of a metal tool, as most metal hammers would. It is also used to reduce the force driving the cutting edge of a chisel, giving better control. Hardwo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spade
A spade is a tool primarily for digging consisting of a long handle and blade, typically with the blade narrower and flatter than the common shovel. Early spades were made of riven wood or of animal bones (often shoulder blades). After the art of metalworking was developed, spades were made with sharper tips of metal. Before the introduction of metal spades manual labor was less efficient at moving earth, with picks being required to break up the soil in addition to a spade for moving the dirt. With a metal tip, a spade can both break and move the earth in most situations, increasing efficiency. A classic spade, with a narrow body and flat (or near flat) tip is suited for digging post holes, and is not to be confused with a "roundpoint" shovel, which has a wider body and tapered tip. Etymology English ''spade'' is from Old English ' (f.) or ' (m.). The same word is found in Old Frisian ' and Old Saxon '. High German ' only appears in Early Modern German, probably loaned from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
