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پہننے والے آلات
The Gold-Pen Protector Inkstand: A Rubber Rim for Careless Dipping
A pen thrust quickly into an inkwell strikes its point on the glass or brass edge of the mouth, and a costly diamond-pointed gold pen is spoiled.
Andrew Fife of Philadelphia received US 6,664, dated 21 August 1849, for an improvement in inkstands called a "Gold-Pen Protector": "forming the top, or surface surrounding and partially covering the mouth of the reservoir of the inkstand, of gum elastic, or other similar soft elastic substance, or composition", with its hole smaller than the mouth, so that the edge of the reservoir is covered.
This rung works out the force on the point with and without the rubber, then fits a rubber ring to a jar and dips two nibs, one on each, and compares them under a lens.
نیا سیکھنے والا
About 1 hour
ہدایات
1
1
Force on the point
Force on the point
Jupyter نوٹ بک لوڈ ہو رہی ہے…
2
2
Another well
Another well
The embedded blueprint protects the ink. Fife's rubber rim protects the pen.
3
3
Read US 6,664
Read US 6,664
"Among writers the habit is almost universal of thrusting the pen, quickly and carelessly, into the mouth of the reservoir for a supply of ink, and at it to throw out of the pen the superfluous ink it has taken up."
"The object of the 'gold pen protector' is to interpose a soft elastic substance between the pen and the hard substances composing the inkstand and its reservoir, in such a way as to greatly decrease—if not entirely remove—the danger of breaking the point of the pen in taking a dip of ink."
4
4
Fit the rim and dip two nibs
Fit the rim and dip two nibs
Cut a ring from rubber sheet about 3 mm thick, as large as the jar's rim and with a hole a few millimetres smaller than its mouth. Glue it on with contact cement so it covers the rim's edge.
Look at two new dip-pen nibs under the hand lens and note the tines. Fit one in a holder and thrust it into the rubber-rimmed jar 100 times as a writer would, knocking off the surplus on the rim. Do the same with the other nib on a bare glass jar.
Look at both nibs under the lens again, then write the same line with each and compare the strokes.
اس مرحلے کے لیے مواد:
ربڑ کی چادر1 ٹکڑا
رابطہ گوند2 ملی لیٹر
شیشے کا مرتبان2 ٹکڑے
لکھنے کی روشنائی50 ملی لیٹر
گتا1 ٹکڑادرکار اوزار:
دستکاری کا چاقو
قینچی
پیمانہ
دستی عدسہ ۱۰ گنا
خطاطی کے قلموں کا سیٹ5
5
A rim that peels, clogs or still lets the nib strike
A rim that peels, clogs or still lets the nib strike
Gold-pen protector troubleshooting.
Flow
Loading...
6
6
History and honest limits
History and honest limits
**Andrew Fife** of Philadelphia signed US 6,664 on 27 March 1849; it is dated 21 August 1849. He secured the protector with glue, cement or other material according to the inkstand, and noted that steel and quill pens as well as diamond-pointed gold ones were destroyed the same way. He disclaimed the shape of the inkstand itself.
**Honest limits.** Sheet rubber and contact cement stand in for his gum elastic top, and steel dip-pen nibs for gold ones. The notebook's mass, speed and stopping distances are examples. Your lens comparisons are the result.
مواد
5- 1 ٹکڑاپلیس ہولڈر
- 2 ملی لیٹرپلیس ہولڈر
- 2 ٹکڑےپلیس ہولڈر
- 50 ملی لیٹرپلیس ہولڈر
- 1 ٹکڑاپلیس ہولڈر
درکار اوزار
5- پلیس ہولڈر
- پلیس ہولڈر
- پلیس ہولڈر
- پلیس ہولڈر
- پلیس ہولڈر
متعلقہ بلیو پرنٹ
یہ بلیو پرنٹ علم بانٹتے ہیں — تکنیک، مواد یا اصول
CC0 پبلک ڈومین
یہ بلیو پرنٹ CC0 کے تحت جاری کیا گیا ہے۔ آپ اجازت لیے بغیر اس کام کو نقل، ترمیم، تقسیم اور کسی بھی مقصد کے لیے استعمال کرنے کے لیے آزاد ہیں۔
میکر کی حمایت کریں ان کے بلیو پرنٹ کے ذریعے پروڈکٹس خرید کر جہاں وہ میکر کمیشن وینڈرز کی طرف سے مقرر، کماتے ہیں، یا اس بلیو پرنٹ کی نئی تکرار بنائیں اور آمدنی شیئر کرنے کے لیے اسے اپنے بلیو پرنٹ میں کنکشن کے طور پر شامل کریں۔