Homework #10

 ATM Machine

Fig. 1: An Automated Teller Machine (ATM)

The first Automatic Teller Machine or ATM was built in New York City in 1939. But the present form has been evolved in last 20 years. An ATM is also known as Automated Teller, Cash Point, Banking Machine or Money Machine. It is highly sophisticated engineering marvel accessible to everybody for telling a person’s banking information, payments and withdrawing him the money he demands.

Construction & Working

Apart from the technology for money withdrawal, an ATM is equipped with state of the art security system that guarantees a safe and secure transaction and renders the machine pretty much impregnable.

The procedure begins by insertion of an ATM card by the card holder. The magnetic tape on the card is read by two sensors. The first sensor checks for genuineness of the card, while the second one reads the bank account number and password for onward matching with password manually keyed in.

Fig. 2: Card reading sensors

Once the password is confirmed the ATM connects to the bank's network which gives machine its marching orders and remotely controls access to the on board vault. The trays in the vault hold bills with different denominations with up to a thousand bills in each. One tray is left empty for deposits.

Fig. 3: Money in vault

The cheque or money deposited with an envelope goes into a bin and is manually sorted later.  Some ATMs can take the deposits without an envelope. They are able to count the incoming bills and refill themselves.

For withdrawals, vacuum driven suction cups grab one bill at a time and feed it to a roller system. Drawing one bill at a time from the vault, prevents the machine from over payment.

The bills pass through rollers with sensors to check their length, width and the thickness of the bill about the size of a coating of paint. If it senses the bill thicker, it is considered as two bills stuck while any thinner, tells the machine that the bill is worn or fake and sends it to the reject bin. That’s when the user hears a pause during a counting sound. The transaction is recorded by the bank and the machine is ordered to release the card.

Fig. 4: A bill passing through rollers

Security

The ATMs construction involves more than a 100 kg steel which makes it heavy and impregnable. The machine is able to withstand 22 tons of impact. The vaults are designed in a way that they can survive an assault for a time long enough till the police arrives. In the event of a breach of vault security, there are explosive canisters of die that explode and ruin the money inside as soon as the vault seals are broken. There is also an on-board GPS to track the machine in the event of robbery.

Homework #9

Excerpt from The Time Machine by H.G. Wells

`But now you begin to see the object

of my investigations into the geometry of Four Dimensions. Long ago I had a

vague inkling of a machine|'

`To travel through Time!' exclaimed the Very Young Man.

`That shall travel indifferently in any direction of Space and Time, as the

driver determines.'

Filby contented himself with laughter.

`But I have experimental verification,' said the Time Traveller.

The machine in the novel "The Time Machine" is a vehicle that takes its rider to travel through time. The rider may choose forward backward options in time along with the control to slow down or accelerate the travel.

The leading character of the novel, Time Traveller, is an English inventor who invents the machine and introduces it to his dinner guests. He explains to them that time is simply a fourth dimension as much like the other three dimensions of space to which a common man is familiar. In the excerpt cited above, he is involved in dialogue with the guests explaining them the machine.

Homework #8

Machines in Mottoes of Advertisement

TOYOTA PRIUS

Homework #7

Excerpt from 

The Time Machine 

by H.G. Wells

Page-7

`But now you begin to see the object of my investigations into the geometry of Four Dimensions. Long ago I had a vague inkling of a machine'. 

`To travel through Time!' exclaimed the Very Young Man.

`That shall travel indi fferently in any direction of Space and Time, as the driver determines.'

Page-11

... The Medical Man was standing before the fire with a sheet of paper in one hand and his watch in the other. ....

Page-50

... Here I was more in my element, for rising on either side of me were the huge bulks of big machines, all greatly corroded and many broken down, but some still fairly complete.

Homework #6

Taxonomy of Ships

Ref: emsa.europa.eu/emcip/download/889/73/23.html

Homework #5

Presence of Machine in logos

Logo of the University of Engineering and Technology, Peshawar, Pakistan 

QED Wind Power Logo

Homework #4

Machines at my workplace

Computer

Like any typical research work related to simulations, computer is the essential workhorse being employed. In my simulation work, which is mainly a Numerical Simulation of Structural Behavior of Ship Structures, computer performs the numerical calculations amounting to solving thousands of equations, storing millions of numbers and interacting with user, myself in limited stipulated time.

We thus simulate a particular behaviour of a ship structure which would otherwise warrant subjecting actual ship to those particular conditions and thus will be practically unfeasible or too costly.

Etymolgy of "Computer"

The word "computer" was used in 1613 in a book The Young Mans Gleanings by Richard Braithwait. It, then, referred to a person who carried out calculations or computations. The word was used with the same meaning unitll middle of 19th century. From the end of 19th century the word started to take its present meaning which was "a machine" that computes or do the calculations based on a set of instructions at speeds much greater than humans.

The word comes from verb "compute (v.)". The word means "calculating machine" (of any type) from 1897; "programmable digital electronic computer" form 1945.

Clucth Pencil

My Clutch Pencil

I use clutch pencil quite often in my work and I am quite use to it that I cannot imagine myself working without one. The sleek handy machine affords neat lines useful in any visualization work.

Etymology of "Clutch Pencil"

"Clutch Pencil" also known as "mechanical pencil" is a seemingly simple machine whose invention and development is spread over decades. Its main purpose is to draw thin and sharp lines without the need to sharpen the nib.


1822: Invention

In 1822, Sampson Mordan and Gabriel Riddle invented and patented the first known mechanical pencil. The device was a refillable lead holder rather than todays sophisticated version of today. Its frequent user would require to carry carry uniform pieces of lead in their pockets.


1860: Faber

In 1860, a German named A.W. Faber invented a more advanced model to help drafters in architecture. Faber, an already renowned maker and manufacturer of writing utensils designed a holder that was more hollow and allowed for a longer lead to be fitted. A year later, Faber invented and patented the twist locking-clutch mechanism.


1862-1899: Upgrades and Improvements

Later part of the 19th century saw many small upgrades in pencil. To mention a few were spring-loaded pencil developed in 1877 and the twist-feed mechanism which was introduced 1895. Still it differed from its present form.

1915: A "Sharp" Pencil

In 1915, two men in two different countries came out with designs that would change the mechanical pencil forever. Tokuji Hayakawa, in Japan, implemented the use of a metal shaft, a screw-based mechanism, and sharp lead. Following an initial sluggish response, the Japanese design became poplar world-wide.  The "Hayakawa mechanical pencil" was patented and marketed as the "screw pencil" or "propelling pencil". The mechanical pencil was named "Ever-Ready Sharp Pencil," later simply the "Ever-Sharp Pencil". This name was later carried by the same company now well-known as "Sharp Corporation".



At the same time in the United States, a man named Charles Keeran from Illinois designed a ratchet-based mechanism in which the lead is held by two or three jaws at the tip of the pencil. The user could then press a button with their thumb at the opposite end and push the lead forward as the momentarily separate.

Stapler

Etymology of "Stapler"


Mechanical device for bending staples and driving them through a bundle of papers to join them. The staples are metallic pins with pointed ends

The first known stapler was made in the 18th century in France for King Louis XV. Each staple was inscribed with the insignia of the royal court, as required. The growing uses of paper in the 19th century created a demand for an efficient paper fastener.


"Paper Fastener" to "Stapler"

In 1866, George McGill got his design patented as "Paper Fastener" for a small, bendable brass paper fastener that was a precursor to the modern staple.

Henry R. Heyl (1877) is considered inventor of the modern stapler because he came up with a design that worked both inserting and clinching a staple in one step.

In the early 1900s, several devices were developed and patented that punched and folded papers to attach them to each other without a metallic clip. The "Clipless Stand Machine" (made in North Berwick) sold from 1909 into the 1920s. It cut a tongue in the paper that it folded back and tucked in. Bump's New Model Paper Fastener used a similar cutting and weaving technology.

The first published use of the word "stapler" to indicate a machine for fastening papers with a thin metal wire was in an advertisement in the American Munsey's Magazine in 1901.