Parker 51 aerometric dating

Eyedropper filler[ edit ] The reservoirs of the earliest fountain pens were mostly filled by eyedropper. This was a cumbersome and potentially messy process, which led to the commercial development of alternative methods that quickly dominated the industry. For some the simplicity of the mechanism, coupled with the large volume of ink it can encapsulate, compensates for the inconvenience of ink transfer. The sac was compressed and then released by various mechanisms to fill the pen. The crescent filling system employs an arch-shaped crescent attached to a rigid metal pressure bar, with the crescent portion protruding from the pen through a slot and the pressure bar inside the barrel. A second component, a C-shaped hard rubber ring, is located between the crescent and the barrel. To fill the pen, one simply turns the ring around the barrel until the crescent matches up to the hole in the ring, allowing one to push down the crescent and squeeze the internal sac. Sheaffer patented the Lever filler, using a hinged lever set into the pen barrel which pressed down onto a bar which in turn compressed the rubber sac inside, creating a vacuum to force ink into the pen. Introduced in , this innovation was rapidly imitated by the other major pen makers.

Parker Date-Codes Reference

By Rick Propas In , having gone to the brink of extinction and being saved by Swiss bankers and Asian investors, Pelikan built its first oversized pen, based on the early postwar design of the famed Pelikan The M , as the new pen was designated, was intended to compete with the larger pens of its long-time rival, Montblanc. The new pen was a departure and, presumably, a necessary risk, for the company.

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Click on the image for a larger view! The colours of the Vacumatic Parker 51’s and the Aerometric Parker 51’s. The Parker “51” took eleven years to develope but Parker sold over 20 million pens during more than 30 years! Parker spent the same amount in dollars to promote the pen, but in reached million dollars in sales. A pretty good investment, eh? It was named the Parker “51” because Parker felt that they needed a name that wouldn’t be hard to pronounce in any country and also easy to remember.

Also at this time Route 51 was built through Janesville and it is quite probable that this also was a reason for the the name. Furthermore It also came out of research in , the 51’st anniversary for the Parker Pen Company. The Parker “51” Mark II is probably the most functional fountain pen ever made. It never leaks, always works and never breaks, well almost It also, in my humble opinion, is one of the nicest pen designs ever made.

It was the first pen that had the nib under a hood, the thought behind this was not to let the ink have a chance of drying on the way from the ink reservoir to the paper. The hooded nib prolonged this unavoidable thing.

Profile: The Parker Vacumatic

Hallmarks and other markings 4. Date codes on Parker Pens Updated Oct In mid Parker began marking most pens and pencils with a date code, both the barrel and the nibs were marked, but lacking a date code doesn’t necessarily mean that the pen was made pre , since many imprints have been worn off with use. The first date codes, found for example on the Vacumatics, consists of two digits, the first one denoting the quarter of production, the second denoting the production year.

Hence a “47” marking on a ‘s pen indicate that the pen was produced in the fourth quarter of , not , which is a common misconception. In the second quarter of this system was however changed to save production time, and a new date code, using a system of dots, was adopted.

Parker redesigned the Vacumatic filler to use a plastic plunger. This plunger, made of celluloid, is smaller in diameter than its metal predecessors, with a button end like the cap of a mushroom. Parker used this new filler design unchanged until the Vacumatic model was discontinued.

They can be easily distinguished from later production by several unique characteristics. All pens of this period are double jewels, meaning that they have a decorative “jewel” at the top of the cap and at the end of the barrel. The imprint on the majority of these pens is at the end of the barrel, near the decorative “jewel”, all in one line. Parker “51” Made in USA. They may or may not have a “1” datecode after the imprint.

Some collectors speculate that the ones without a datecode are really pre-production models from Another explanation may be that they were never dated or that the datecode wore off on most instances the datecode is lightly imprinted to begin with. It should be noted that some examples have been found with the imprint up by the clutch ring, with a datecode of “1”.

In addition, I have been able to inspect a demonstrator with the “1” imprint by the clutch ring and a rounded blindcap.

Fountain pen

Model identification guide under construction iterary hundreds of different Vacumatic models exist. This Model Identification guide is in no way a complete recapitulation of all these models. Dating is rather simple, since most Vacs have a date code engraved on the body. You’ll find it to the right of the imprint: The first date codes emerged in , but lacking a date code doesn’t necessarily mean that the pen was made pre , since many imprints have been worn off.

The first date codes came in two digits, where the first digit denoted the quarter and the second the year.

The Parker 51 vacumatic has a 14k gold nib, it is smooth and feels slightly softer than the 51 special. The flow is a little wet but the fine nib makes it usable on cheaper papers. The flow is a little wet but the fine nib makes it usable on cheaper papers.

It is time for another pencil post to break up the fountain pen stuff…though they are all related. These pencils were sold to match the corresponding Vacumatic 51 in both barrel color and cap design. Here is the photo of the pencil before I had a chance to clean and polish it. The twist mechanism works perfectly and the eraser and lead supply are full. I polished the lead cone and cap with a jewelers cloth.

I then polished the barrel with scratch remover, finishing polish, and buffed on a coat of carnuba wax.

Dating Parker Vacumatic

By the Company had become so successful it was manufacturing gold nibs for other manufacturers. Having recruited a German Technician in the early ‘s the Company also began manufacturing Pencils During its production, lasting until the mid ‘s the Company used a great variety of Plastic and Hard Rubber Materials making pens of extremely High Quality , even experimenting with real leather coverings Rare Early Wyvern no.

This beautiful pen is in absolute MINT condition. Rare to find in this condition.

The Parker 51 is a fountain pen introduced in Parker ’s period advertising called it “The World’s Most Wanted Pen,” a slogan alluding to restrictions on production of pens for the civilian market in the United States during World War II.

Although not marked, believe this is a 14K cap band. Light Vertical line chasing. No Duofold imprint just Parker trademark. Badly dis-colored, but fantastic 18K Canada nib with some flex. Long with Streamline Model Barrel imprint. Nib – Parker Duofold Pen. Nib – Parker Lucky Curve. Barrel imprint small Lucky Curve. Barrel imprint 3 line Parker. Medium size barrel imprint. Nib – Parker Duofold Pen 26 flexible. Medium imprint Duofold Jr ? Nib – Parker Duofold Canada Stub.

Small barrel imprint – Duofold over Lucky Curve banner.

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It is, of course, made from 14K gold, which was the standard for that day. The s Duofold pens carried over the button filler mechanism that was used in the Jackknife Safety pen and other predecessors of the Duofold. Pushing in the button would cause a thin metal strip to bow towards the center of the barrel causing the ink sac to compress.

For this reason, the only ink that goes into my Parker 51 is black Parker ink and when this Vacumatic come back from hospital, it took will only get Parker ink although I might get a bottle of blue ink for it.

History[ edit ] Early prototypes of reservoir pens[ edit ] An early historical mention of what appears to be a reservoir pen dates back to the 10th century. According to Al-Qadi al-Nu’man d. Leonardo’s journals contain drawings with cross-sections of what appears to be a reservoir pen that works by both gravity and capillary action. Historians also took note of the fact that the handwriting in the inventor’s surviving journals is of a consistent contrast throughout, rather than the characteristic fading pattern typical of a quill pen caused by expending and re-dipping.

While no physical item survives, several working models were reconstructed in by artist Amerigo Bombara that have since been put on display in museums dedicated to Leonardo. Klein and Henry W.

Vintage Black Parker Vacumatic

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