Covers of Metal Drums, Casks, or other Receptacles.
Year: 1885

page_text: Covers of Metal Drums, Casks, or other Receptacles.
We, WILLIAM HENRY JOHNSON, of the firm of Richard Johnson, Clapham and
Morris, Metal Merchants and Manufacturers, of 24 and 26 Lever Street, Manchester,
and WILLIAM EDWARD WILLIAMS, Engineer, of St Helens, both in the County of
Lancaster, do hereby declare the nature of said Invention for IMPROVEMENTS IN
AND IN THE METHOD OF SECURING THE LIDS OR COVERS OF METAL DRUMS, CASKS,
OR OTHER RECEPTACLES, to be as follows:—
This invention relates to the metal drums, casks, or other receptacles in which
caustic soda and other substances are enclosed or packed for export or transit and
the object of the Invention is to readily, simply, and firmly fasten in position the
lid or cover employed to close the filling aperture in the metal drum, cask, or other
receptacle.
To effect this we make preferably a circular filling aperture in the end of the
metal drum, cask, or other receptacle and we make the lid or cover with a
projection or projections or an annular Hange to fit into the filling aperture and
we also form with or secure to the underside of the lid a pin or peg. We drill
a hole in a plate spring of steel or other metal which is placed on the pin the
ends of the plate spring passing through under cut grooves in the annular flange
beyond which they project slightly.
When the metal drum, cask, or other receptacle has been filled the lid is placed
over the filling aperture with one projecting end of the plate spring put under
the edge, the end of a key or lever is then passed through a small hole in the lid
above the plate spring and sufficient pressure exerted to bend and draw in the
free end of the plate spring, the other being held stationary by the pin; when
the pressure is removed the spring straightens and the free end passes under the
edge of the filling aperture thereby securing the lid in position.
Dated this 16th day of NL 100

page_text: Covers of Metal Drums, Casks, or other Receptacles.
We WILLIAM HENRY JOHNSON, of the firm of Richard Johnson, Clapham and
Morris, Metal Merchants, and Manufacturers, of 24 and 26 Lever Street, Manchester,
and WILLIAM EDWARD WILLIAMS, Engineer of St Helens, both in the County of
Lancaster, do hereby declare the nature of said Invention for IMPROVEMENTS IN
AND IN THE METHOD OF SECURING THE LIDS OR COVERS OF METAL DRUMS, CASKS,
OR OTHER RECEPTACLES, and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :—
This invention relates to the metal drums, casks, or other receptacles in which
caustic soda and other substances are inclosed or packed for export or transit,
and the object of the Invention is to readily, simply, and firmly fasten in position
the lid or cover employed to close the filling aperture in the metal drum, cask,
or other receptacle.
To effect this we make preferably a circular filling aperture in the end of the
metal drum cask or other receptacle and we make the lid or cover with a pro-
jection or projections or an annular flange to fit into the filling aperture and we
also form with or secure to the under side of the lid a pin or peg. We drill
a hole in a plate spring of steel or other metal which is placed on the pin the
ends of the plate spring passing through under cut grooves in the annular flange
beyond which they project slightly.
When the metal drum, cask, or other receptacle has been filled the lid is placed
over the filling aperture with one projecting end of the plate spring put under
the edge, the end of a key or lever is then passed through a small hole in the lid
above the plate spring and sufficient pressure exerted to bend and draw in the
free end of the plate spring, the other being held stationary by the pin; when
the pressure is removed the spring straightens and the free end passes under the
edge of the filling aperture thereby securing the lid in position.
And in order that our Invention may be fully understood and readily carried
into effect we will describe the accompanying Sheet of Drawings, reference being
had to the figures and letters marked thereon.
Figure 1 is a side view in section of our improved lid applied to a metal drum.
Fig. 2 is a plan of the same showing the under side of the lid. Figs. 3 and 4 are
a side view and plan of the lid in position for being secured and Figs. 5 and 6 are
two views of a modification of our Invention.
a is the upper part or top of a metal drum with a circular filling aperture a¹;
ba lid preferably made of cast metal; the lid is formed with an annular flange b³
to fit the filling aperture and on the under side of the lid is a pin 6'; a plate spring
of steel c has a hole punched in it which is placed over the pin 62; the ends c¹ c³
of the spring pass through under cut grooves in the flange 61 beyond which they
project.
When the metal drum, cask or other receptacle has been filled the lid is placed
over the filling aperture with the projecting end c¹ of the spring c put under the

page_text: top edge of the drum; the end of a key or lever d is passed through a hole b³ in
the lid over the spring and sufficient pressure put upon it to bend the spring c and
draw in the free end of the spring, the other end being held stationary by the
pin 6. When the pressure is romoved from the key the spring straightens itself
and the end c passes under the edge of the drum thereby securing the lid in
position.
Figs. 5 and 6 represent a modification of our improved fastening. In this case
we cast a projection 6' on the flange b¹, the free end of the spring at c³ passes as
before under the flange and the other end is or may be guided by a groove in the
flange under the projecting piece.
To secure the lid in position its projecting piece 6 is passed under the edge of
the drum and the key is employed as before to draw in the free end of the spring
and hold it there until the lid is down and the pressure on the key is released.
Although we have shown and described a lid or cover with a single plate spring
it is obvious that more than one spring could be used and also more than one
projecting piece on the flange or lid.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that what
we claim is-
1. The method of securing the lids or covers of metal drums or casks, sub-
stantially in the manner shown and described.
2.-A lid with an annular flange or projections and a pin combined with a plate
spring or springs for securing the lid to a metal drum or cask, substantially in the
manner shown and described.
3. In a lid for metal drums, the use and application of a plate spring or springs
with one or both ends free and connected to a pin on the lid, substantially as and
for the purposes specified.
4. In lids for metal drums, the use of a flange or its equivalent with grooves to
guide and support the ends of a plate spring or springs, substantially as and for
the purposes specified.