Parker-51 Aerometric PenConverter Adapter(The Parker Pen Shown in the Photos are NOT for sale, only the Brass Converter Adapater is Sold) Hallo, everyone. Its almost two years back, I started selling My and Your favorite Parker-51Aerometric Pens Converter Adaptor. From two long years, due to pandemic, there's a break, as there were no shipping options available. The Raw material as we'll as Machining has become more expensive. After facing all these Hurdles, Now, I am back with the same project. I EARNESTLY THANK EVERY ONE FOR YOUR SUPPORT, AND ENCOURAGEMENT. I planned to make a Converter Adapter for my Parker-51 (Aerometric Pen). It was a hurry morning, I usually check the Ink level in my Parker-51, then proudly drop it into my pocket. The bladder was highly pigmented and I noticed less ink in the sack, and started filling the pen. The Ink Sack gave away instantly and few drops fell on my white shirt, that left deep scars in my mind. The Adapter, that I came up is having 2 parts. 1) The Sleeve (Body). 2) The Piercing Tube. Both the parts are built from solid Brass, for Durability. Aluminium is another metal which is affordable and Machinable. But, it has its own disadvantages, like getting oxidized due to Atmospheric oxygen and has less durability. On the other hand, Brass is much stable metal and harder than Aluminium and has high durability. More over, Brass is highly compatible with Celluloid than Steel and Stainless Steel. The total Weight of Pen increases Marginally by 3.5 grams. It may vary with different models, but will not go More than 4.5 grams. Pen will not loose its Critical Balance, as the increase Of 3.5 grams will fall on the Anterior Portion of the Pen. Even, after Posting the cap, the Pen Exhibits stability and sits in the fingers with a good Posture. The Sleeve (Body): Sleeve is a cylindrical part , which Anchors the P-51 Collectors tail, with sufficient tightness at the Front End (smaller opening). Then the Sleeve accommodates the Clutch ring and the “O”Ring. Hooded Section (Shell) of the pen can be screwed on the Sleeve. The Sleeve takes the twist converter at the Rear End(Large Opening). Then the barrel of the Pen can be screwed into the position. Note: This component is manufactured with a tolerance of ± 15 Microns (µ), to its Original Dimensions of the Pen. (1 Millimeter =1000 Microns). Piercing Tube: Piercing tube also made of Brass, for Extra Durability. It is the most DELICATE part of the Converter Adapter. It is Hand Turned, Hand Polished and Finished to the Precession of Parker 51 Orignal Piercing tube. It seats inside the aperture of the Sleeve (Body). It takes the opening of the Twist Converter. Note: This component is manufactured with a tolerance of ± 10 Microns (µ), to its Original Dimensions of the Parkers Piercing Tube. How to use the Converter Adapter? Its very simple.The converter Adapter comes to you with Pre-Assembled Piercing tube. Let the Breather tube Pass through the aperture of the Piercing Tube (SEE THE PHOTO NO: 5), from the Front End of the Adapter (Smaller Opening). Continue to Insert the tail of the Collector into the smaller opening of the Adapter Sleeve. It fits tightly, without any gap, between the walls. Then place the Clutch Ring in Position, slide the “O” Ring, Beneath the Clutch ring. Now, Screw on the Hooded section (Shell) of the Pen. First, Fill the Twist Converter with Ink. Slide the Breather Tube of the Collector, into the Converter, then Press the converter gently into the opening of the Sleeve until the Sleeve reaches the Notches on the Twist Converter. One or two drops of inks may come out of the Nib. Don’t get Panic. Its due to the air Pressure, Present in the converter, which escapes through the Breather Tube. Gently wipe off the excessive Ink and you are ready to go. Note: Don’t use any Sharp or Blunt rods for Cleaning the Adapter. They can Damage the delicate Piercing tube Irreversibly and cause malfunctioning. The Piercing tube is Placed in its Possition by the help of Hydralic Press. Hence, its alignment is very important to Prevent leaking. Basically, this converter Adapter is used to increase the convenience of filling System to the Legendary Parker-51. Parker itself had done the same Job and I am doing the Job in Brass. Please see the Pictures 8 & 9. We can clearly observe that P-51 has NO Breather tube for its latest versions. (Refer “Parker51.com”, for more info.) Breather tube is used to counteract the Wetting Phenomenon, caused by inks, with the help of Capillary Raise Mechanism. Wetting Phenomenon and the Capillary Rise are two Physical Properties of all Liquids. Wetting Phenomenon is the nature of adhesion of the liquid to the walls of its container to wet it. On the other hand, Capillary Raise mechanism Raises the fluids against the gravity and Hence, Counteracts the Wetting Phenomenon. Wetting Phenomenon is very less (or ) Negligible with modern days Converters and Cartridges. Hence, Breather tube is not Required. However, you can choose the options between, "Having the Breather Tube (or) Removing the Breather tube". I tested My Pen without removing the Breather Tube and its writing Flawless, from three Months. I had submitted the writing sample in 11th Picture. Pictorial Explanation: 1) First Photo shows the the Brass Converter Adapter, holding the Collector at the Anterior End and the Twist converter at the posterior end. 2) Second Photo shows the Converter Adapter accommodating the Clutch Ring and the "O" Ring, flaw less. First, insert the Clutch Ring and then insert the "O" Ring, which goes into the grove of the sleeve. 3) Third Photo shows the Section (Shell), Screwed on to the the Collector. 4) Fourth Photo shows the Converter Adapter receiving the Parker ink cartridge. 5) The Fifth Photo shows, Breather Tube coming out of the Converter Adaptor, which has to be short cut to allow the free movement of the Twist converter, and also to accommodate the Cartridge. 6) The Sixth Photo shows, Pen Assembly. (The pen is not for Sale). 7) The 7th Photo shows, The actual Parts of the Converter Adapter. THE SLEEVE (Body) and THE PIERCING TUBE. Please note that, the piercing tube will be assembled in the Sleeve, at our factory premises, before shipping (see the photo 8). 8) THE ACTUAL BRASS MADE CONVERTER, WHICH IS ALREADY ASSEMBLED WITH THE PIERCING TUBE AND DISPATCHED TO THE CUSTOMERS. 9) The Tenth Photo shows the actual Plastic Converter Adopter, developed by Parker, to Accommodate, the Cartridge and the Converter. 10) The Eleventh Photo shows, the writing sample done with the Parker-51, which is assembled with the Converter Adapter. Warranty: This Converter Adapter Comes with One Year Warranty for any Manufacturing Defects. If the Converter Adapter develops any Manufacturing defects in One year, we will Replace the Unit with a New Unit, or return 10.25 USD. We are not responsible for any Damages caused due to Miss-handling the Unit. After proper Verification of the Manufacturing Defect, we will take the Needed action. Please, keep the Ebay invoice and the date of Purchase, without fail. Converter Adapter, does not interfere with the ink flow mechanism of the pen. It just , holds the Collector and the Twist Converter in Position, and accommodates Pens Section and Barrel, similar to that of the Aerometric System. This Adapter cannot be used with the Demi size or the Lady Parker-51. The Pen displayed here is NOT for sale. Advantages: 1) Easy to refill the Pen with the ink of your Choice. 2) It can take the cartridges, but the Breather tube should be cut by 2.7 Cm, so that, remaining small length of the Breather tube remains Inside the piercing tube. 3) Converter takes more ink, than an Aerometric System. 4) Remaining Ink is clearly visible, through the converter. 5) Problem of replacing the silicon Sacs will not be there. We are a division of "Ramakrishna Engineering", We are also Selling Good Quality Viton Polymer Made “O” Rings for P-51 in this website, at very reasonable Price. We do combine Shipping, just mail me before you buy both. Please note that, the Converter Adapters price is increased by 0.50 USD, as the Metal and machining cost has touched all time high. Thanks for looking at this Small and sensible work. If you have any questions, please mail us rkpw.77ap at gmail. I again want to remember my favorite wordings. "Parker-51", Let the Legend Live Long.