METALLIC PENS WITH UNEQUALLY ELASTIC NIRS
Year: 1878

page_text: LETTERS PATENT to Frederic William Holdt, of Berlin, in the Kingdom of
Prussia, for the Invention of "METALLIC PENS WITH UNEQUALLY ELASTIC
NIRS."
Sealed the 16th July 1878, and dated the 29th January 1878.
PROVISIONAL SPECIFICATION left by the said Frederic William Holdt at the
Office of the Commissioners of Patents on the 29th January 1878.
"
FREDERIC WILLIAM HOLDT, of Berlin, in the Kingdom of Prussia. METALLIC
PENS WITH UNEQUALLY ELASTIC NIBS."
My Invention consists in giving greater elasticity to one of the nibs or divisions
of a metallic pen than to the other.
I may obtain this unequal elasticity by making a slit in the one nib or half of
the pen, divided by the central slit, or I may apply a slit to both halves, these slits
being different in their form and effects, whereas ordinary pens have only the
central slit; or if with a slit in each half these slits are similarly shaped, and there-
fore each half operates in the same way.
I might make more than one slit in each half or nib of the pen, but the slits in
each half will always differ in form and effect.
By giving unequal elasticity to the two halves or nibs of the pen formed by the
central longitudinal slit I obtain great ease and flexibility of the point of the pen,
permitting the hand to guide it with less fatigue, and make finer up and heavier
down strokes; further, the pen will last longer.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Frederic William Holdt in the Great Seal Patent Office on the 23rd
July 1878.
FREDERIC WILLIAM HOLDT, of Berlin, in the Kingdom of Prussia. " METALLIC
PENS WITH UNEQUALLY ELASTIC NIBS."
My Invention consists in giving greater elasticity to one of the nibs or divisions
of a metallic pen than to the other.
I may obtain this unequal elasticity by making a slit in the one nib or half of
the pen, divided by the central slit, or I may apply a slit to both halves, these slits
being different in their form and effects, whereas ordinary pens have only the central
slit or if with a slit in each half these slits are similarly shaped, and therefore each
half operates in the same way.
By giving unequal elasticity to the two halves or nibs of the pen formed by the
central longitudinal slit I obtain great ease and flexibility of the point of the pen,
permitting the hand to guide it with less fatigue, and make finer up and heavier
down strokes; further, the pen will last longer.
The accompanying Sheet of Drawing shows four pens of various forms, but all
embodying my Invention.
Figure I. shows a steel pen with a slit in one half or division only; and Figures II.,
III., and IV. show pens with a slit in cach half or nib.
In all the Figures a indicates my improved slit by which I give greater elasticity
to one half, division, or nib of the pen than to the other, and it will be seen that
where an ordinary slit b is used my slit a exceeds it in length for this purpose.
I may make more, than one slit in each half or nib of the pen, but the slits in
each half will always differ in form and effect.
Having now described and ascertained the nature of my said Invention, and in
what manner the same is or may be performed, I desire it to be distinctly under-
stood that I do not limit myself to any particular form or dimension of slit, but
that what I claim as secured to me by the herein-before in part recited Letters
Patent is, the use of a steel pen having increased elasticity on the right side, sub-
stantially as above set forth.
In witness whereof, I, the said Frederic William Holdt, have hereunto set my
hand and seal, this Tenth day of July, in the year of our Lord One thousand
eight hundred and seventy-eight.
FRIEDRICH WILHELM HOLDT. (L.S.)