IMPROVEMENTS IN PROVISIONAL SPFICATION
Year: 1874

page_text: LETTERS PATENT to Joseph Loewensohn, of Berlin, in the Empire of
Germany, Manufacturer, for the Invention of " IMPROVEMENTS IN
PROVISIONAL SPECIFICATION left by the said Joseph Loewensohn at
the Office of the Commissioners of Patents, with his Petition, on
the 12th January 1874.
I, JOSEPH LOEWENSOHN, of Berlin, in the Empire of Germany,
Manufacturer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN SAFETY SCREWS FOR EVERY KIND OF PACKING," to be as
follows:-
This Invention relates to safety screws for securing together the sides
and lids of packing cases, so that cases secured thereby cannot be
opened for purposes of plunder without exhibiting such marks as will
lead to detection. For this purpose I make the screw in the manner
shewn in the accompanying Drawing. The end a which enters the
'

page_text: wood is made of a flat tapering form with a helical twist of coarse
pitch above the part so twisted there is a plain round shank 6 sur-
mounted by a broad head c having oblique fins or teeth d projecting down
from its edge. A hole being bored in the wood the screw is driven in
till the head is imbedded in the wood. It will be then found impossible
to remove the screw by pincers or other tools; the only means of opening
or taking apart the case being to cut the shank 6 by a chisel, so that the
head can be removed with a portion of the wood adhering to its teeth.
Thus no attempt to purloin goods contained in cases secured by screws
such as I have described can be made without leaving marks so distinct
as to lead readily to detection, as in order to get access to the screws
for cutting their shanks or for making any attempt to extract them it
is necessary to cut away considerable portions of the wood in which they
are imbedded.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Joseph Loewensohn in the Great Seal Patent Office
on the 11th June 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOSEPH
LOEWENSOHN, of Berlin, in the Empire of Germany, Manufacturer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twefth day of January, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Joseph Loewensohn, Her special
license that I, the said Joseph Loewensohn, my executors, administrators,
and assigns, or such others as I, the said Joseph Loewensohn, 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
"IMPROVEMENTS IN SAFETY SCREWS FOR EVERY KIND OF PACKING," upon the
condition (amongst others) that I, the said Joseph Loewensohn, my
executors or administrators, by an instrument in writing under my, or

page_text: 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
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
'
NOW KNOW YE, that I, the said Joseph Loewensohn, 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 thereof, reference being had to the accom-
panying Sheet of Drawings, and to the figures and letters marked
thereon, that is to say:-
This Invention relates to safety screws for securing together the sides
and lids of packing cases, so that cases secured thereby cannot be
opened for purposes of plunder without exhibiting such marks as will
lead to detection. For this purpose I make the screw in the manner
shewn in Fig. 1 of the Drawing. The end a which enters the wood is
made of a flat tapering form with a helical twist of coarse pitch; above
the part so twisted there is a plain round shank 6 surmounted by a
broad head c having oblique fins or teeth d projecting down from its
edge. A hole being bored in the wood the screw is driven in till the
head is imbedded in the wood. It will then be found impossible to
remove the screw by pincers or other tools; the only means of opening
or taking apart the case being to cut the shank 6 by a chisel, so that the
head can be removed with a portion of the wood adhering to its teeth.
Thus no attempt to purloin goods contained in cases secured by screws
such as I have described can be made without leaving marks so distinct
as to lead readily to detection; as, in order to get access to the screws
for cutting their shanks or for making any attempt to extract them it is
necessary to cut away considerable portions of the wood in which they

page_text: and a round shank surmounted by a head; substantially as herein
described. .
In witness whereof, I, the said Joseph Loewensohn, have hereunto
set my hand and seal, this Twenty-first day of May, in the
year of our Lord One thousand eight hundred and seventy-
four.