U.S. patent number 3,618,955 [Application Number 05/015,995] was granted by the patent office on 1971-11-09 for method of making an earth puzzle.
Invention is credited to Bette Abell Barnes.
United States Patent |
3,618,955 |
Barnes |
November 9, 1971 |
METHOD OF MAKING AN EARTH PUZZLE
Abstract
An earth puzzle including sphere formed of magnetizable material
and a plurality of puzzle pieces which may be placed on the sphere
to form a world globe. The puzzle pieces are retained on the sphere
by permanent magnets attached to the underside of the puzzle
pieces. In making the aforementioned structure, the sphere is first
fabricated from magnetizable material. A second sphere is molded on
the first sphere after which a representation of the world is
painted or otherwise placed on the second sphere. The second sphere
is then cut into puzzle pieces and removed from the first sphere.
Permanent magnets are then suitably attached to the underside of
the puzzle pieces which may then be placed on the first sphere to
form a world globe with the permanent magnets retaining the pieces
on the first sphere.
Inventors: |
Barnes; Bette Abell (Beaumont,
TX) |
Family
ID: |
21774778 |
Appl.
No.: |
05/015,995 |
Filed: |
March 3, 1970 |
Current U.S.
Class: |
273/157R;
264/163; 434/147; 264/152; 434/134 |
Current CPC
Class: |
A63F
9/12 (20130101); A63F 2009/1212 (20130101); A63F
2009/0035 (20130101); A63F 2009/124 (20130101); A63F
2003/0444 (20130101) |
Current International
Class: |
A63F
9/06 (20060101); A63F 9/12 (20060101); A63F
9/00 (20060101); A63F 3/04 (20060101); A63f
009/12 (); G09b 027/08 () |
Field of
Search: |
;273/157R ;35/46A
;264/132,152,163 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Oeschsle; Anton O.
Claims
I claim:
1. A method of forming an earth puzzle comprising the steps of
providing a sphere including magnetizable material, molding a
second sphere on said first sphere, placing a representation of the
world on said second sphere, cutting said second sphere into pieces
and removing them from said first sphere to form puzzle pieces, and
placing permanent magnet material on the undersides of said pieces
to allow them to be reassembled and held on the first sphere to
form a world globe.
2. The method defined in claim 1 wherein the first sphere is formed
from plastic containing magnetizable particles and wherein said
second sphere is molded from plastic.
3. The method defined in claim 1 wherein certain puzzle pieces are
cut at random while others are cut to form continents of the
world.
4. A method of forming an earth puzzle comprising the steps of
forming a first sphere with permanent magnet material incorporated
therein, forming a second sphere over said first sphere from
magnetizable material, placing a representation of the world on
said second sphere, cutting said second sphere into various pieces
and removing them from said first sphere to form puzzle pieces
which may be reassembled and held by magnetism on the first sphere
to from a world globe.
Description
This invention relates to a method of making a puzzle of the type
wherein pieces are assembled to form a world globe.
One of the objects of the present invention is to provide a novel
method for making a puzzle of the type which contains pieces which
may be assembled together to form a world globe.
A still further object of the present invention is to provide a
method of making such a puzzle having novel means for securing its
pieces in assembled relationship.
A further object of the present invention is to provide a method of
making such a puzzle whose pieces may be quickly and easily
disassembled.
Yet a further object of the present invention is to provide a
method of relatively economically manufacturing such a puzzle, with
the puzzle having an attractive appearance and the ability to
withstand repeated use over long periods.
The above and other objects are achieved in one embodiment, by a
first sphere made from magnetizable material such as sheet iron or
plastic having iron or other magnetizable particles therein. A
plurality of puzzle pieces are provided in various shapes which
when properly assembled on the sphere will form a world globe. The
puzzle are maintained on the first sphere by permanent magnets
secured to the underside of the puzzle pieces to be attracted to
the magnetizable material of the sphere.
Further according to the invention, a method of making the
aforementioned puzzle structure includes forming the first sphere
from any suitable magnetizable material or from plastic or other
material containing magnetizable particles. The second sphere,
preferably made from plastic, is molded on the first sphere after
which a representation of the world is painted or otherwise placed
on the second sphere. The second sphere is then cut into various
pieces to separate the pieces from the first sphere and to thereby
form puzzle pieces some of which may be cut at random and others
may be cut in the form of a continent or other subdivisions of the
world as may be desired. Permanent magnets are then attached to the
underside of each of the puzzle pieces to enable the puzzle pieces
to be subsequently assembled on the first sphere to form a world
globe.
Other objects and advantages of the present invention will become
apparent from the following more detailed description taken in
conjunction with the attached drawings, wherein:
FIG. 1 is a perspective view of a sphere employed in making the
puzzle of the present invention;
FIG. 2 is a perspective view of a second sphere formed on the
sphere shown in FIG. 1 during a further step in making the puzzle
of the present invention;
FIG. 3 is a cross-sectional view taken generally along lines 3--3
of FIG. 2;
FIG. 4 is a perspective view similar to FIG. 2 but illustrating a
representation of the world painted on the outer sphere during a
further step in the method of making the puzzle;
FIG. 5 is an exploded, perspective view illustrating puzzle pieces
which are cut from the outer sphere; and
FIG. 6 is a view illustrating a puzzle piece with a permanent
magnet attached to its underside.
DETAILED DESCRIPTION
Referring now to the drawings in detail, FIG. 1 illustrates a
sphere 10 mounted on a suitable stand or base 12; the sphere 10
being formed from any suitable magnetizable material such as sheet
iron but preferably from molded plastic containing magnetizable
iron or other particles.
Referring to FIGS. 2 and 3 there is illustrated a further step in
forming the puzzle of the present invention wherein a second sphere
12 is formed by molding over the first sphere; the second sphere
preferably being formed from plastic material.
As illustrated in FIG. 4, a representation of the world is painted
or otherwise formed on the outer sphere 14. In the next step as
illustrated in FIG. 5, outer sphere 14 is cut to form puzzle pieces
16 which are removed from inner sphere 10. Pieces 16 may be cut in
random shapes or partly in random shapes and partly to form
continents or other subdivisions of the world.
After puzzle pieces 16 are formed and removed from the inner
sphere, permanent magnets 18 are suitably attached, such as by
bonding or any other suitable method, to the undersides of pieces
16 as illustrated in FIG. 6. Puzzle pieces 16 may then be
reassembled on inner sphere 10 to form a world globe. When it is
desired to disassemble puzzle pieces 16 from sphere 10, pieces 16
may be easily removed by merely pulling them from sphere 10. In
this latter regard, the magnets are chosen so that they will have
sufficient strength to properly maintain the puzzle pieces 16 on
sphere 10 in selected position while at the same time permitting
the puzzle pieces to be moved over sphere 10 during assembly and to
be easily removed during disassembly of the entire puzzle.
Although in the embodiment illustrated, a permanent magnet material
is placed on the puzzle pieces, in an alternative embodiment, the
permanent magnet material may be formed or incorporated into the
inner sphere 10 and the puzzle pieces may be formed of magnetizable
material. In the shown embodiment, the surface 9 of the permanent
magnets which are to engage the inner sphere 10, may be formed with
a curvature to conform to the inner sphere.
* * * * *