A NEW OR IMPROVED EARTH-BORING AUGER, APPLICABLE AS AN ANCHOR OR MEANS OF FASTENING OR ATTACHMENT
Year: 1875

page_text: LETTERS PATENT to Peter Jensen, of Chancery Lane, London, for the
Invention of "A NEW OR IMPROVED EARTH-BORING AUGER, APPLICABLE
AS AN ANCHOR OR MEANS OF FASTENING OR ATTACHMENT."
"A com-
munication from abroad by Auton Bohlken, of Varel, Oldenburg,
Architect.
Scaled the 25th March 1875, and dated the 27th January 1875.
PROVISIONAL SPECIFICATION left by the said Peter Jensen at the
Office of the Commissioners of Patents, with his Petition, on the
27th January 1875.
I, PETER JENSEN, of Chancery Lane, London, do hereby declare the
nature of the said Invention for "A NEW OR IMPROVED EARTH-BORING AUGER,
APPLICABLE AS AN ANCHOR OR MEANS OF FASTENING OR ATTACHMENT," (a com-
munication to me from abroad by Auton Bohlken, of Varel, Oldenburg,
Architect,) to be as follows:-

page_text: The apparatus consists of an auger of a peculiar form and arrange-
ment.
The lower part of the auger has two separate screws cast some little
distance apart on the same boss, which latter is cast or otherwise fastened
on to the wrought-iron bar of the auger; the lower screw has less pitch
than the upper screw; the bar has a shoulder below and in the small
space between this shoulder and the screw boss there is a loose ring with
a vertical cutting blade projecting out to one side, and to the other side
a chain is attached by means of a shackle; the chain serves to draw the
auger or anchor out of the soil when required; the chain passes over a
balk of timber let into the surface of the ground by the side of the auger;
the upper part of the bar of the auger terminates in a small eye for an
anchor stock, or in a large ring for a balk of wood to pass through, or in
a square for receiving a square wrench.
The mode of using this apparatus is as follows:-It is screwed into the
ground, and the pitch of the lower screw determines the travel or amount
of soil passed through; the upper screw having a larger pitch the soil
above the same becomes compressed, and the soil between the two screws
becomes loose or light; the auger consequently passes through the soil
comparatively casy, but its holding resistance is great; the auger or
anchor may nevertheless easily be screwed out again when required.
:
For larger sizes the auger may be made wholly of cast iron or cast
steel, or with steel or wrought-iron screw blades, cast in.
The object of the vertical knife is to guide and preserve the position
of the chain, so as to prevent it from being twisted round the auger
during the passage of the latter in or out of the soil.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Peter Jensen in the Great Seal Patent Office on the
: 27th July 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, PETER 30
JENSEN, of Chancery Lane, London, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-seventh day of January in the

page_text: year of our Lord One thousand eight hundred and seventy-five, in the
thirty-eighth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Peter Jensen, Her special
licence that I, the said Peter Jensen, my executors, administrators,
and assigns, or such others as I, the said Peter Jensen, my executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "A NEW OR
IMPROVED EARTH-BORING AUGER, APPLICABLE AS AN ANCHOR OR MEANS OF
FASTENING OR ATTACHMENT," (a communication from abroad by Auton
Bohlken, of Varel, Oldenburg, Architect,) upon the condition (amongst
others) that I, the said Peter Jensen, my executors or administrators, by
an instrument in writing under my, or their, or one of their hands and
seals, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Scal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Peter Jensen, do hereby declare
the nature of the said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by
the following statement, reference being had to the accompanying
Drawings, and to the letters of reference marked thereon, that is to
say:
The object of this Invention is to afford a safe and convenient means
of fastening or attachment for ships or other objects.
The apparatus consists of an auger of a peculiar form and arrange-
ment.
And in order that this Invention may be fully understood, I will now
proceed to explain the same with reference to the accompanying
Drawings, of which Figure 1 is an elevation of the auger; Figure 2, a
plan section; Figuro 3 is a detail; and Figure 4, a view shewing the
apparatus applied.
The lower part of the auger has two separate screws B and C cast a
little distance apart on the same bar D, which latter is cast or otherwise

page_text: hundred and twenty feet), the resistance of the earth's cone is about
ninety-six centre feet; but the ship's anchor goes about eighteen inches
into the ground, and has by the same incline only one entire foot of
each against it. Reckoning even only half the amount of earth resistance
to the auger we get a fifty times greater resistance than with the
anchor.
And having thus fully described this Invention, I claim, the arrange-
ment and construction of an auger or anchor having two separate screws
of different pitch, and a loose vertical knife with chain fastened thereto
and passing over a balk, all substantially as and for the purposes herein-
before set forth.
-
In witness whereof, I, the said Peter Jensen, have hereunto set my
hand and seal, this Fourteenth day of July, in the year of our
Lord One thousand eight hundred and seventy-five.