| Patent No. |
Inventor |
Date of Issue of Patent |
Patent Description |
40,489
(Decalcomania, Decal, Gum Applied over Printed Side -
Design on Die Orientation: Normal (i.e., reversed) |
Henry Lowenberg |
Nov. 3, 1863 |
Method for creating a transparent paper such that
a design printed upon it could be viewed from both sides. Gum would be
applied to the printed side. Once affixed to an envelope, any attempt
to remove the transparent paper would leave the design behind. Lowenberg
also described applications for this invention, including the transfer
of the printed design to "paper, glass, wood, or ay other desirable
surface." In effect, a decal, or "decalcomania". |
Lowenberg Essays
(Patent No. 40,489)
Click this image to view a nearly
complete collection of Lowenberg Decalcomania Essays
|
42,207
(Soluble Sizing) |
Henry Lowenberg |
April 5, 1864 |
A method of printing stamps on paper first coated
with a water soluble sizing, gum to be applied as usual to the back of
the paper. Any attempt to wash off a cancellation mark would result in
the printed design disolving along with the sizing, as well as any cancelling
ink applied to the face. |
45,057
(Decalcomania, Decal, Print Applied over Gum - Design
on Die Orientation: Reversed (i.e., normal) |
Henry Lowenberg |
Nov. 15, 1864 |
A "self cancelling" postage, revenue, or other
stamp produced by applying adhesive material to a transparent paper.
The design is printed directly onto the adhesive itself and visible
through the transparent paper. Any attempt to soak the stamp off for
reuse would dissolve the adhesive, effectively destroying the design
printed upon it. (In effect, another form of decal).
Lowenberg specifically mentioned printing with
"non-reversed types", i.e., if using an intaglio die to create
the design, the usual method of engraving the design in reverse would
not be observed.
|
Lowenberg Patent Essay
No. 45,057
Single at left from complete sheet of 25 at right
Viewed through transparent paper
(note white paper
backing placed behind essays to provide contrast)
|
A nice block of 4 on
white paper,
printed in the "normal" orientation for this essay
(item provided for scanning,
courtesy Pete Hubicki)
|
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|
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| 53,081 |
Henry Lowenberg |
March 6, 1866 |
For preparation of paper by treatment with prussiate
of potash or oxalic acid. Once printed, any attempt to remove the cancellation
would result in permanent discoloration of the paper. |
| 63,733 |
Henry Lowenberg
Emile Granier |
April 9, 1867 |
For an ink based on "sirrup (sic), molasses, honey".
When combined with coloring material and, if needed to improve workability,
glycerine, this would be "particularly useful for postage or revenue stamps,
because if an attempt is made to remove the cancellation mark by any liquid
the stamp is destroyed." |
| 104,862 |
Henry Lowenberg |
June 28, 1870 |
For the addition of prussiate of potash to standard
printers' ink. This would cause the ink to discolor if any attempt were
made to clean the stamp. |
