A smaller version of some pen models, perhaps meant to attract a younger female customer. The term was used especially with the Parker Vacumatic Debutante of the 1940s.

Also referred to as Art Deco, this was a style of visual design that began in Europe before the First World War and extended world-wide through the 1920s. A number of makers produced pens with Art Deco styling, but the term most often refers to those from Wahl-Eversharp. The oversize Personal Point pen with the Greek Key band is often called the "Deco band," and later Wahl Equi-poised (Equipoise), Doric, and Coronet pens contained Deco style elements.

Dellen im Metal overlay

Like debutante, a term referring to a smaller version of a pen line. Parker 51s in the smaller size were called Demi.

Many pens were produced with transparent barrels to be used as salesman's models to demonstrate internal working mechanisms. More recently, the clear pens have been produced for style rather than as sales demos, although these are still referred to as 'demos.' One of the best known is the Pelikan 800 green demonstrator, now a highly collectible limited edition.

A name often used to refer to the Parker Thrift-Time series of the early 1930s. These were economy-priced button-fillers that were produced in a wide range of interesting patterns and colors.

The dome of the Eversharp Skyline. Most models have a clip that wraps up over this derby, but a few early models do not. Derbys are usually in the same color plastic as the pen barrel, but some are gold-filled or 14k.

While the Parker Vacumatic does not use an ink sac, it does use a rubber piece which fits tightly inside the barrel, and when operated by the plunger, expels air to create the vacuum. These diaphragms are now produced so Vacumatics can be restored.

a rubber gasket necessary to maintain vacuum in Sheaffer's touchdown and snorkel filling pens.

Special piston, developed by Kovacs and introduced by Pelikan in 1929

Early doctor's pens had a thermometer in the barrel along with the pen works. By the '20s, a number of companies produced white sets with a pen, a pencil, and a matching thermometer case.

Made by Wahl-Eversharp in the 1930s, the Doric was named for the 12-sided columns of Greek architecture, the pen having 12 faceted sides. From 1931-34, the Doric had the distinctive Eversharp rollerball clip,. From 1935-41, Dorics had a straight clip. A variety of colors, sizes and cap band styles were made. The later models were available either as lever-filler or vacumatic fillers.

a mechanical pencil that advances lead by twisting a mechanism and retracts it by twisting in the opposite direction. Early models were propel only. Repeater pencils were introduced in 1935, but many comapnies continued the propel/repel.

The knob at the barrel´s end of a safetyfiller pen, which is a attached to a spiral mechanism inside the barrel. By turning the knob, the inside spiral propels the nib in and out of the barrel.

almost all pens using a rubber ink sac employ a bar inside the barrel that presses against the sac. The bar is activated by a lever, button, crescent, coin etc. One rubber sac pen that does not use a pressure bar is the Twist Filler.

A widely-used mechanism using a pressure bar activated by a button at the end of the barrel in both the USA and Europe. Parker introduced the design in 1913, and it became Parker's primary filling mechanism until the Vacumatics were introduced in the early 1930s. Parker continued to make button fillers well into the 1940s.

One of Parker's most famous pens, the Duofold was introduced in 1921 in red hard rubber, becoming known as "Big Red." In late 1926, Parker began making plastic pens and Duofolds then became available in Jade, Lapis, Black and ?earl and Mandarin Yellow in addition to the original red and black. They came in Junior and Senior sizes, The 1926-27 models had a single wide cap band, and the 1928-29 models had two narrow bands. These are known as "flat-tops." In 1930, Parker introduced a slightly smaller model with the streamlined look of the period and added several new colors. The Duofold was replaced by the Vacumatic, but ads show that Duofolds of these styles continued to be available from Parker into the 1940s. The Duofold name was re-introduced by Parker later in the decame with a lower priced pen available as either a vacumatic or a button filler. The name aas again been resurrected with the more contemporary Duofold line.

One of several names for fine nibs used by bookkeepers. Also called "posting" nibs."

the opposite of flexible in a nib - one that is rigid. Manifold nibs were popular for bookeeping and pressing through multiple copies.