The Pen

Topics: Fountain pen, Ballpoint pen, Pens Pages: 14 (2907 words) Published: March 5, 2013
Introduction to Design and Manufacture

Product Design Specification:
The Pen
Mark Wild
Nathan Brown

1.0 Introduction3
1.1 Background3
1.2 Product Introduction3
2.0 Product description5
2.1 Product 15
2.2 Product 26
2.3 product 38
2.4 Product 49
2.5 Product 510
3.0 Product Comparison12
3.1 Introduction12
4.0 Product Design Specification (P.D.S)15
Product Design Specification for a Pen:15
4.1 Operation/Performance15
4.2 Manufacture15
4.3 Environment15
4.5 Life16
4.6 Aesthetics16
4.7 Social16
4.8 Reliability16


* 1.0 Introduction

This report intends to identify five different models of Pens and writing instruments and critically evaluate each design. The report will focus on how the designs different from each other, pointing out the features that separate them from their competitors, and then compare them to each other. After this comparison, the report will construct a product design specification, (PDS) for a generic Pen. All aspects of what is required will be covered in order to produce a pen.

* 1.1 Background

As with most influential inventions throughout history, the Pen hasn’t deviated much from its humble beginnings as a design. A pen is a useful instrument that is commonly held between the thumb, index finger and middle finger with which humans have conveyed and recorded their thoughts, feelings and insights throughout history, and is responsible for the history of civilisation itself. The first evidence that any writing instruments had been used was by the Greeks, who invented the first writing instrument that resembled a pen. “It was a sharp-pointed object called a stylus made of either bone or metal” (1). This was used to make markings in wax, because it was very easily scratched on.

* 1.2 Product Introduction

Nowadays, the most common type of pen is ball point. A Ball point pens works by using a small rotating ball made of brass, steel or tungsten carbide to disperse ink as you write seated in a socket below a reservoir of ink. But there have only been a few pens that preceded the ball point pen, which are the Fountain pen, dip pens and quills. Even though the quill and dip pens were simple in design, all modern pens use a watery ink that runs through the pen using a system similar to the capillary action in the human body. The fountain pen was introduced in “1884 by Lewis Waterman who patented the first practical fountain pen” (2). At this time the fountain pen was much more advanced than the previous designs, such as reeds, brushes and quills that needed to be reloaded with ink, which made them difficult to use consistently.” Fountain pens were the first to use ink reservoirs allowing the writer to continue writing without an ink well nearby” (3). Other types of Pens include fiber tip, roller ball and Gel ink pens. All of today’s pens are generally made from plastic or stainless steel and in some cases synthetic, materials. The most common way of making a pen is through a process called extrusion, whereby “plastic powder or granules are loaded into a hopper, then a large spiral screw forces the material through a heated chamber, creating a thick liquid mass that is forced through a die and then cooled”(4). Fig 1. Internal workings of a Ball point Pen


* 2.0 Product description

This report is an overall objective design review that will take into account both the technical capabilities of the individual products and the aesthetics of the design. At the end of each product description will be comments on the overall design of the product.

* 2.1 Product 1

Name| Bick ecolutions round stick|
Manufacturer| Bick|
Materials| 74% recycled materials|
filling| Internal...
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