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Патент USA US3100358

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Aug. 13,’ 1963
w. CHAMBERLIN
3,100,353
GLOBE SUPPORT AND‘MEASURING DEVICE
Filed March 1'7, 1961
3 Sheets-Sheet 1
ATTORNEY
Aug. ‘IT3‘,'"~1963
.
"
w. CHAMBERLIN
'
3,100,353
GLOBE SUPPORT AND MEASURING DEVICE
Filed March 17, 1961
'
'
s sheets-sheet 2
INVENTOR
n/mm/wv OWIMBEPUM ,
I BY
17-» ~77 IVA/54W
ATTORNEY
Aug- 1-3, 1963
w. CHAMBERLIN
3,100,353
GLOBE SUPPORT AND MEASURING DEVICE
Filed March 17, 1961
3 Sheets-Sheet 3
BY
9m, 1,5454%!
ATTORNEY
United States Patent 0 ” ICE
3,16%,353
, Patented Aug. 13, 1963
1
2
3,100,353
face of the globe when, moving the. measuring device
‘
around on the globe surface, slightly raised and smoothly
GLOBE SUPPURT AND MEASURING DEVICE
noundedprojections are formed on the inner or under
Wellman Chamberiin, ‘Waterford, Va., assignor to
National Geographic Society, Washington, D.C., a cor-l
surface of the spherical measuring device so as to space
the device ‘generally above‘ the surface of the globe when
poration or the District of Columbia
in use. Also, these projections prevent the'creationrof a
suction‘ between the ‘measuring device and globe, so that
Filed Mar. 17, 1961,'Ser. No. 96,442
5 Claims. (Cl. 35-46)
the device may be moved freely relative ‘tothe globe.
The present invention relates'to educationalvdevices
Furtherjobjects, features and‘ the attending'advantages
of the invention will beapparent with ‘reference ‘to the‘
and more particularly to globe vassembliesrepresenting the
earth.
1
_
l
following speci?cation and drawings in which:
"
- There are many Well-known forms'of globe assemblies
useful for geographical study of the earth. There are . '
'
FIG. v1 is a perspective elevational view of theglobe
assembly of the invention. with the spherical‘ protractor
also many forms of globe arrangements especially adapted
in place to be -used;_:
_
,
g .
c
‘
to solve navigational problems as well as geographical
FIG; 2 as top plan view of the globe assembly of the
_ problems.
With the present-day increased interest in .15 invention with the spherical protractor centered in place;
World geography, as Well as the explorations in space,
FIG.» 3 is a transverse section through the globe assem;
there is greatly increased demand [for world globe assem~
bly with the sphericalprotractor positioned in place to
blies having measuring arrangements to solve a very great“
be used as shown in FIG. 2; ‘v
p
,
variety of geographical, astronomical and navigational 20' FIG. 4 is an enlarged fragmentary sectional view'show
problems not only in relation to the surface of the earth
ing how the spherical protractor is supported to be freely
but also in relation to the space and universe surrounding
the earth.
movable ‘onthe globe surface; .
"
’
'
FIG. 5 is a sinipli?edjelevational. view of the globe‘,
It is a principal object of the present invention to pro
assembly with the spherical protractor in the stored posi
vide an improved world globe arrangement having meas 25 tion, and
.
g
.
uring devices to facilitate the measurement or solution of
FIG. 6 is an enlarged fragmentary sectional view ‘of
a great many problems, both navigational and geo
the globe assembly and spherical protractor in stored re-v
graphic.
lation similar to‘FIG. 5.
Another object of the invention is to provide -a new
form of world globe assembly that may be used to solve
problems concerning the passage of a satellite in orbit
around the earth.
Another object of the invention is to provide an im<
v
.
,
usual sphere 10 made of any suitable material and hav
ing a map of the world on its surface, together with the
usual ?fteen degree spaced latitude and longitude mark
ing lines. As vmay be more clearly seen in FIGS. 1-3. of
proved world globe assembly with greatly enhanced 11se
fulness and with improved appearance both‘ in display
storage and in use.
’
Referring to the drawings, the globe assembly is the
the drawings, the’ globe 10 is freely rotatably supported
Within a cradle _oomprisedof la great-circle ring 11 and
.
carried by support members such as‘ shown at 12, 13 and
14's'ecured1to a decorative base 15. H Only three of the
A further object of the present invention is to pnovide
an improved measuring device for use with globe assem- >
support riser members '12'~14jare clearly, shown in the
blies to facilitate the measurement of surface distances,
drawings, but it should be understood’ that‘ at _least two
comparison of surface areas, plotting and predictioniof, 40 of the support members 12 and -13_ arediametrically OPPO'.
satellite‘ orbits and the ilke.
> 7
sitely positioned and the supports maybe formed of clear
Another object of this invention is to provide an im
plastic and provided with a vertical line marking such asv
proved globe assembly having arrangements and features
shown ‘at116. ‘ The line marking 16 will be later‘descri-bed
to facilitate the solution of astronomical problems of the
in connection‘with its suggested ‘usage. The base of the
sun, ‘moon, planet and satellite positions as well as over 45 support 15 ‘includes a raisedrounded projection 17 upon‘
‘ earth azimuth and distance and the earth’s shadow cone
‘which the globe may rest' to be ‘may rotatable,- It will ‘ \
extinction ‘lines by height. -'
>
j be ‘noted that‘theglbbe assembly thus far ‘described/en
In accordance with the invention, a world globe is
freely rotatably supported in removable relation |on a supg~
porting structure that may include a great-circle ring’suit
ablesthe globe‘ 10 topbe'r'emovably supportedand freely
notatably positioned-so that it may berotated to any‘
desired-position within the sup-port. ‘ The‘great-circleiing
ably marked with appropriate indicia. A measuring device
which may be comprised of a sheetof hard ‘transparent
- 11'is provided with various‘indicia'including degreemark»
ings,"statute mile markings, and time
material is shaped in the form of a spherical segment'inot
greater than a hemisphere having an inner surface radius .
approximately the same as the radius of. the surface golf
the globe so that’ thetransparent measuring device may
be placed to overlie any desired area of section-of the '
globe with the selected globe map portion ‘visible. there
through. The measuring device is provided with‘suitable
‘indicia thereon which‘may be seen to 'overlie~ theglobe‘
'_ of whichmay be 'oohv'e-n'tiona-h
_
zone makings,‘ all‘ p
.
I
v v
In ‘addition ‘to the globe assembly thus far, described,‘
the‘ invention includes a spherical protractorio'which is‘
’ formed of 'sheet'material,preferably clearlplastidfwith
an inner ,radius substantially "the same‘ as,‘ or‘ slightly
- larger than; the radius of theiglobe'. Thus-‘the spherical‘
' ‘protractor1'201, may be-positiohed'_ onjthe globeftof'b'e'
60 lmoved over any desired surface thereof.Y""-As shown'iin‘the'
map and can be used to indicate surface area, surface I ' drawings," the spherical narrating is vsciirriewljrat'1 less
distance and other factors, as will be described in more - than Va‘hemis‘phere in'size, so' that- _it1 maybe easily'fposii
detail. The measuring device may also be provided with
a sighting member that is located in a predetermined re- ‘
lation to the other indicia on the device so that the device
and indicia'may be ‘precisely related‘ to a desired point
on the globe surface. Also, the sighting member may pref
erably take the “form of an aperture which receives a
suitable projection of the supporting base for the globe
tione'd'~ on‘ the globe.
spherical'ifprotralctorfZh is A '
: provided with a'sighting”'element For‘ aperture 'Zlwhich
65 ‘
'
willenable the sphericalprotr-‘actor, and-itsjmarkings later
. described, 'toibe aligned relative Jtda'desiredpointon the
map‘ of the earth on theiglobe’s surface, Whenuo inruse;
thelspherical p'rot'ractor ZO‘maybe stored;—as morejclearly 7
shown in FIGS. 5 and 6 of the ’drawirigs,'~at the base vof ,
so that when the measuring device‘is not being used,
it may be stored in nested relation between the support 70 the globe in nested relation between the globe 10' and ‘its
and the globe. In order to prevent scratching the sur
supporting base 15. The-aforementioned ‘sighting aperé
3,100,353
s"
7
Q
4
.
V
V
, ‘ "ture 217.’ is of sut?cient size to, receive the projection’ “17 of r' . circle, it is only necessary’ to line up the two points on
the globe so that they both touch the great-circle ring.
. the base l15 so that the spherical protractor 2t) will be
maintained in the nested relation during storage.
If one of the points is also placed on the zero mile indica
tion on the, great-circle ring'then the other rnile indica
7
As more clearly shown by FIG. 4 of the drawing-slthe
spherical protractor, 20 is 'also'provided with a-plural-ity '
of slightlydrouhd'ed raised projections 22,.only one of '
' Which‘is shown‘in FIG. 4. ‘These projections, "whichare
tion, adjacent‘the other point to be’ measured, will indicate
the surface distance in statute miles‘between the two
, points. ,If this distance is to be measured in terms of
" 'spaced at various points‘ within the tinnéhfrieririhery ofv , hautical' miles, then the degree scale of. the great-circle
" the’ spherical protractor 20, serve to raise the general surj - 1' ' ‘ring would be employed, audit is understood that each
degree on the great-circle ring equals sixty nautical miles. I
j rfa'ccfo'f the spherical protractor slightly above thesurface
It is1not believed necessary to" describe ‘in detail how _
' of the, globe to prevent scratchirig' the globe bythe ,ihdicia ,
on ,the protractor 'as'the' spherical protractorand; globe “7
I
the great-circle ring can; be used toideterrnine standard -
,< timeat any'lpointton the earth, since this is _a;.conventional
areginovedrelativeto each‘otherjfl'As mentionedearli‘er,
procedure-which Would‘be used in connection with the
w; the projectio'ns ,22‘ also preyentlthe creation of; frictional‘, iengagement and the forma, on'of a suction between’: the
' Vprotractor; and globe.
time and degree'rnarkings on ‘the great-circle ring, much
15'
‘ '
>. Referring ‘newmowedsquats/its
,1 and 2 of
the drawings, it ‘will/be seen that thelsiiherical lirotractor
thesarnemannerias hasv _ beeri'previously
r
I , described in _ _ _
' ‘determiningdistancejbetweerr two' pointsgon‘ the earth’s
7 surface." ‘It isjalso not believed necessary to'describe, in
detail howthelatitude and longitude markings on-gthe
Q20 is provided with a number'oi'ihdiciaor rnr'arki-"ngs.v
" Eoriexample, the‘ markings may include falmuc‘antar circle .20 globe and the great-circle ring andv'support may be used '7
' V markings-‘23 Whichfare‘ concentric with thesighting leper-V, I 'to ‘locate any point‘ onrthe earth byits latitude and longi- ’ ‘rare 2,1, and spaced at positions representing’ 500' miles, . tudeisirrce-thi's prooedure'is conventional and well-known.
"
to indicatesurface distance from the‘center'of the sighting"
If ibisdesired to?nd the'antipode ‘for any particular
' vided which intersects the almucantar circles andextends
‘spot on‘the earth Which'is, of course, the point on the
earth farthest away from the spot onjthe earth, the great
w-l'relenrent. ~In 'additionQan. azimuth line '24 ‘maybe jpro
diametrically across the surface of the ‘spherical protractor;
circle' ring may again ‘be used with ‘reference to the dc
.Vgree markings. ' For example, assume that the spot on
" The bottom edge ;of f the spherical p'rotractor 20 may be
provided withdegree markings 26 vin both degrees and > the earth for which the antipode is-to be determined is
minutes for precisely locating true direction. 'Further
more, the spherical prot-ractor'w may be, provided with
anaIemmatiomarkingS-QS: whichmay be used for pur
poses-to be described. ,In addition, the spherical pro
ttractor'z? is provided withmarkingsindicative of square
' Washington, DC. The globe is rotated to place Wash,
30
ington, ata ‘90° mark on the great-circle ring. ri‘heother.
, 90° ‘mark‘on the great-circle ring will then indicate the
'antipode which is the point at the exact opposite side of
' the earth.
,
-
The spherical protractorsltl is useful for determining
imile' area, 'andthese markings 27 include a plurality of
small rectangles, each rectangle representing an area of 35 many/other problems. For example, the azimuth or A
100 miles by’ IOOmiles, or 10,800’ square miles. With the ' true direction from one point to vanother of the earth’s
, 1.00,‘squares as shown, an “area, of one million miles is - T vsurfacelmay'be quickly determined'in degrees starting
with zero from true, North. In order to do this, it is ?rst
' , indicated.‘
cal protractor
It is 29
desiredto
is preferably‘formed,ioiatransparent
point out againthat the spheri- '46
.' 1 necessary toycenter the sighting hole 2?; of theisphcrical i
protractor 29' every the starting point on the earth’s sur
plastic material and that the markings as described-are’
placedronr thetransparent protractor byfa’ny suitable
face. Then}.t~he zero ‘line or azimuth line 24 is lined up
' ,sothat it_intersects,or points toward theNorth Pole:
‘ bossing'or thelike. ,These markingsmay be colored to. '_j Then git-is ‘necessary to stretch a string or other similar‘
wellsknown, technique’ suchias, .for example, etching, em
increase'their. visibility if desired, f
'
f. Thegl ,bejassembtly including th ' spherical pro-tractor‘
1 "as de‘scribedmay have various uses, some ofavhich willbe,
.7 described herein." It‘should be understood, howeventhat,
element from' the starting point tothe ending point on
the earthfs Surface across the surface oftheisprherical
Vprotractor, and the point thatthe stringacrosses thedirec;
tion. scarleyor degree markings ,jarouncl' the; edge of?theT
spherical protra’c‘t'or indicates .the'azimuthin' degrees. __ _
"'- assernlblies,
spherical'protractor
providedof20course,:that
maybe used
thewithotherglobe
inner radiusxoff'g_' ' ~- ‘The ‘grid scale '27 of the sphericalgprotnactor ,20 as
or ocean {portions
described of
maythebeglobe.
used to,. estimate
As previously
area ofmen
land
thesphe'?cal
globewithfwhichfit
protractorsuitably
is'to be useds
matches
Whentheradius
the globe,ol‘f'tlztev
‘105 is? ' previously
restingdin'j'thestand, the vgreat-circle band or. ring 11 holds ' Q ' "tioned,‘:each of the‘ smalLsquares; represents an area of,
_ anyjposrtionlrelative.
laterally- isinssltheslobcijmay
to ,thej-great-circle ‘be
vring‘fItL-‘great
brought into.
910,000 jsquarerniles." ,Iffthe’ transparent spherical pro-'
' tractor ‘is placed yviththeia're'a grids 'overlying't-he, globe _ .
" vcirclearcs' maybe-measured in anylofrthejmitsa marked 755, surface to’jbe estimated in aroma-glance will showfwhat
' proportion oi'f'thea'reasquares is 'representedby‘the sur
'
3' .ton, the ring, anywhere-on the globe. ‘
madame;- as:
great-.oircleyring"oanbeyused to sho, ee'tpanc.-osrhe
asured. By counting the solidly ?lled
~ sunrisgfsunset, or'jthe seasonsroftheyearf, Furthermore,
mate of‘ the actual areato be measured may be :readily
'earth’s orbitror ‘as the'terminator in problems involving I ij'rwsquaresi anddestimating :the. 'partly ?lled’ squares, an esti-v
the line centerjlineklo'shownfon the transbarenbvertical
SH
‘ports Hand ‘13 may be, used- is afragmentary'greatl
"circle of ;the gldbe ‘to point outshort arcs o
passage olfthé'like."
A
"
‘
'such'.a_s,,.a-,countryonithe protractor and’thereafterw‘rnov-v v t,
'
- Iingthejirotractor 'relative'tothe globe to position the "
are the
-:
‘ traced outline'oileranother, geographical unit to compare '
asprewwsly 4esqr1bed,,..
.,
,
.
.
..
_
t
.
M
"tilted as the earth tself inclines. tQWardthelsun;wlfaitltsi‘
desiredto ‘posU
_ .
,,
z
_
.
,
,
V
.
v
__
_ v
,
the globeonsuch any-taxis, this, only
necessary_'to,turu;;the7globe spithatithe'dottedlineslfor'
fa
t'?l'f'r'opics ‘of Cancerand Capricorn both touch the‘gr'eat
‘?oirclef-ring. ‘' "It should’ b'e-understood, of course,that the" ‘
‘ mapfof the cart-has conventionallyplaced;on the-globe’s‘
surface includes such‘dotted line ,indicia. ; Y
Ifdt ‘is ‘desired, to know the shortestdyista-nciebetween
'.
spherical protractor can also ‘be'used to compare
area size 'iby; tracing }the" outline- off-a, geographical- unit
atherelative,sizesofi-the-units;
j '-
TheanaIemma'ZS
of
'
‘
g
g
a
V
_:
thespherical protractor
"
‘
‘
'
20 may
,;be used‘to ?nd'theone spot onthe earth'where the‘sun
?is: at zenith on any dayiof the year. For example, as
vfsuifnethat the‘ date visrApril 15, and that‘ the observer is
>in,_W_ashington,. D.C. ‘V It'i's-desired to know the one spot
‘ nearest the‘ sun at noon.
analernma- 215 is'centered -
I r'betweenthe lines'ottheITropics ‘of-Cancer and Capri
~ corn on the earth’s surface’ with the meridian line of the
L anyivtwo points onthe globegwliich'is, of course, thefg'r'eat Zianalerhrha-ih line with the ‘Washington, DQC, meridian
'
3,100,353
on the globe. The observer then reads along the analem
- The‘same method could be used with‘ any celestial body
ma for the ‘date ‘(April 14) which~ indicates that the sun
to ?nd or demonstrate lines of position used in naviga
tion.
If it is desired to ?nd the‘ limits of the earth’s shadow
cone ctor satellites at various heights, the globe assembly
of the invention may be uscdas ‘follows. First, the
is almost directly over the .Panama Canal, thus solving the
problem. The analemm-a 25 may be used to solve other
problems which will be ‘obvious to those skilled in the art.
The globe assembly of the invention, together with
the spherical'protractor 20, may also be‘ used for track
sun’s geographical position for the day and time is found,
ing an arti?cial satellite in orbit, as soon as the satellite
using the analemma on the spherical protractor to de
enters on a relatively stable path that can ‘be traced on
. termine declination ‘and equation of time, and using the
i the earth’s surface as a great circlet It is vonly neces 10 time circles on the ‘great-circle ring 11 to determine/the
sary to know ‘the satellite’s inclination (or the distance
in degrees that it travels north. or south of the Equator)
men'dian‘oi the sun. '-N ext the antipode of the‘sun’s geo- '
graphical position is, found, using the 90° marks ‘on the
latitude scale of th'eIgreat-circle' ring. Then the spheri—1_
calprotracton-Ztl‘ is centered with'its sighting aperture
together'withthe time required to complete one orbit of
the earth. Given these two factors, the course of the
satellite can be vpredicted. For example, say that the in
clination is 60° and the orbit timewis one hour and 'forty
at this antipode. of‘ the geographicalposition‘of the sun.
The concentric "distance circles 2.3-v on'ithe spherical‘prm; '
tractor will then correspond to‘ the earth’s ‘shadow limits Z
for‘ the following heights above the earth’s surface. I
minutes. If'the satellite passesrover Washington, DC,
at noon, the cities over which it will pass onits next
orbit can be indicated as follows. First, incline the globe
in the great-circle ring 11 so that the ring touches the
lines for 60° north, 60° south, and the city of Washing
Distance from center
ton, DC. The great-circle ring 11 then shows the satel
lite’s orbit over Washington, DC. However, while the
500'
satellite is making one orbit around the ‘earth, the earth
1500
itself is turning eastward at the constant speed of one 25
2000
s
71000
degree every four minutes. By the time the satellite has
i 2500
returned over the United States of America, it will follow
a path farther west. By dividing four minutes into 100
3000
minutes to deterrr'iinev how many degrees Westward the
4000
satellite will’ be, the answer will be 25°.
Height above vsurface‘
‘ (statute miles):
(Statute miles) '
‘
'
'
'
'
27,412
_.______' _______________________ __ 11,871
'
__
6,733
________________________________ _.
4,211
______________________________ __
‘2,739
_______________________________ _.
1,796
3500
Now theapoint 30
1,156
__
402
____
711
5000
5000
_.__
__
193
where the great-circle ring crosses the Equator as "previ_-'
ously aligned indicates 47° West. It the observer will add
It will be noted that the inner cup-shaped portion of
25° to 47° he will ?nd that the satellite’s next orbit will
the base 15 has a radius substantially the same as, or
intersect the Equator at the 72° point. vBy turning the
slightly larger than, the‘ radius of the'globe. Thus, if
globe so that the ring now touches both 60° lines of lati 35 the-greatecircle ring is not to be used in conjunction with
tude and the 72°lwest mark on the Equator, the course
the globe and protractor, the stand maybe inverted so
of the satellite’s next orbit over the United States will be
that the great-circle ring becomes the base and the globe
indicated, audit will be seen that the satellite comes close
may then be positioned within, and freely rotated rela
to Tulsa, Oklahoma, and New Orleans, Louisiana.
tive to, the base 15 and the protractor may then be posi
Another use for which the spherical protractor'20' of 40 tioned on the globe in a manner similar to that pre
the invention maybe employed is to indicate or estimate
viously described. '
the ?ight radius ofman. aircraft or military missile. As
Although various suggested uses ‘for the globe and i
previously mentioned, the concentric almucantar circles
indicate 500-mile spacings. By placing the sighting aper
ture 271 over the large-tend“ knowing the range ‘of ‘the air
spherical protractor assembly of the invention have been
describedp itshould be understood that many other uses
45 will occur to those skilled in the art.
craft or missile an instantdetermination may be made of -
the point on the globe from which the missile or aircraft
,
The elevational azimuth of the sun may be readily de
termined ‘for a given point on the earth’s surface as fol
.
of the invention and the scope of the appended claims.
_‘ could be ?red or take oil to arrive at the desired target
area. If, for example, the missile range is 1500 miles, it i
could be ?red from any point Within the third concentric
almucantar ring.
‘
.» Var-ions vmodi?cations may‘be made within thespirit
I claim:
7
-1. An educational globe ‘assembly comprising, a globe
50 having a map of the earth on its surface, a support for '
said globe having a projection adapted to engage and
freely rotatably support said globe inremovable relation,
and a measuring device formed as a spherical segment
lows. First, the standard meridian for the time of the
not greater than a hemisphere of transparent sheet ma
day at the given point is located. Noon will show the 55 terial having a radius of curvature ‘for its inner surface
meridian of the geographical position of the sun. By
substantially the same as the radius of- curvature of said
putting the analemma on the sun’s meridian, the exact
globe whereby said device may be' removably positioned
geographical position of the sun for the particular date‘
over a desired area of the globe’s surface with a selected
may be determined. By centering the sightingaperture
portion of the earth’s map visible therethrough, said
~ '
21 of the spherical protractor on the given point on the 60 device having a sighting aperture for aligning the device a
in predetermined relation to the selected portion of the
protractor will correspond to the following sun elevations:
map on the globe’s surface, said aperture being adapted
to receive said projection whereby said device may beJ
Distance (miles) :
Elevations (degrees)
stored in nested relation between said support and‘ said
500
82%
1000
751/2 65
2. An educational globe assembly comprising, a globe
1500
68%
having
a map of the earth onits surface,‘ a support for
2000
_-__.-- , 61
globe, the concentric‘distance circles 23 of the spherical
globe.
2500
3000
3500
4000
4500
5000
______________________________ __,__ 53%
'
"
_
I
I
I
said globe having a projection adapted tovengage and
freely rotatably support said globe in removable relation,
461/2
and a measuring .device formed as a spherical segment
70
39%
not greater than a hemisphere ‘of transparent sheet ma?
32
terial having a radius of curvature tor its inner surface
24%
substantially the same as the radius of curvature of said
17%.
globe whereby said device may be removably positioned
The sun’s azimuth is ‘found with the direction lines '24:. 75 over a ‘desired area of the globe’s surface with a selected
' 3,100,353
7 portion of the 'earth’s
map visible theretlirough, said‘
adapted to receive. said projection whereby said device
device having a sighting aperture ‘for aligning the device
in predetermined relation to the, selectedportion of .the
‘map ‘on the globe’s surface, said aperture being adapted
to receive saidprojection whereby saidndevice may be
' may be stored in nestedrelation bebveen said support
and said globe and, said device having a plurality of
spaced-apart raised projections on the inner spherical sur
face to'sp‘ace the surface of said device above the surface
stored in nested relation'between said support ‘and said
of the globe;
~
‘7
V
I
'
globs, said device having a plurality of spaced-apart raised
5. An educational vglobe assembly comprisingga globe
projectionson the inner, spherical surfaee to space'the
[having a-niap of the earth on its surface, a support for
surface‘ of, said device ‘above the surfacerof the globe.
said globe _having"a7projection adapted to engage and
13.‘ An; educational?globe assembly comprising, a globe 10' v‘freely, retatably support said globe in removable relation,
' fha fn-gamap'of the earth 011 its surface, a support for
said, support having ‘a pair of diametrically opposed up‘
7dé'glo'be having a vprojection adapted to engage and, '
standing "rim of transparent material each having a center a
‘ linernarking thereon and ‘a great-circle ring of slightly
eely lrotat'ably. supportjrsaidglobe in removable relation, ,
said suppontljhaving :{a pair O?diametricallY opposed up
‘larger diameter than the diameter of said ‘globe supported
standing ‘arms andIa-gr'eat-circle ringjof {slightly larger» 15 thereon; and-a measuring device formed‘as ‘a spherical
diameter}thantheidiarneter of said globe ‘supported there
segment not greater than a hemisphere of transparent
g,>-anda measuring ‘device formedxas a spherical seg
' sheet material having a r‘adiusof curvature'for its inner
ment not greater tha'nxa hemisphereof transparent sheet
surface substantially the sameas ltherradiusv of curvature
material having a radius of curvature for its’ inner surface ' - of». said globe whereby said device may be removably
_ substantially the same as the radius of‘curvature ofrsaidr 20 positioned over a desired ‘area of the globe’s surface with
globe whereby said device may be l'é?'lOV?blY'PDSl?Ol‘iéd
a'selected portion of the earth’s map visible there'through,
over a desirediarea of the globe’s surface 'with' a selected
said device h-aving'a sighting aperture for ‘aligning the
portion or, the, earth’s map visible: thereth'rou'gh, said de->
device in predetermined relation to the selected portion
vice havingasighting aperture for'hligning the device a ' of the .map' on the glo‘be’s surface, said aperture being
T in predetermined relation tot-he selected portion of the
adapted to receive said projection whereby said device may
be stored ‘in nested relation-between said support and
said globeand, said device'hewing a, plurality of spaced
- map-'on‘the globe’s surface, said aperture being adapted
to receive said projection whereby ‘said device may be‘,
'storediri nested
lg'lQbe-l?..
relation betweensaid'support and’ said 7
t
,
.7
.
1' .. 4 An educational globeqassembly comprising, a globe
having snap ‘of the'earth on its surface, a support for
saidhglobe having 5a projection adapted to engage and
.freely rotatably support said globe in removablerelation,
apart raisedprojeetions on the inner spherical surface to
“surface of said device above the surface of '
' space the
r
30
the, globe. V
‘
standing arms and a great-circle ‘ring of slightly larger
' ‘diameter than the diameter of saidglobe supported therei
' on, land ,a measuring device formed as a spherical seg
' .ZUNrrED STATES PATENTS
,7 171,472
g , Durant __I__‘___'____'____>__ Dec.‘ 28, 1875
812,408
887,740
$1,532,878
t- Dickerson '_ _____ _u___,____ Feb. 13, 1,906
a _Phillips'__'____'_'_______ __’_ Mayi12, 1908
1 7.
yinentwnwot greater than a hemisphere of transparent sheet
,tnat'erialhaving a radius of curvature [for its inner sur
, "face substantially the’, same "as the radius oflcurvature of 40
' said globe whereby ,saiddevice may beremovably posi
tioned‘over‘a; desired area. of the’globe’s surface with a. ‘
Bourne __V_._'__ _________ .._May 2, 1944
92,355,304
' Koch _..____' ___________ __ Aug. 8,11944
2,546,764
MCI-lose __'_ ____ __'_'...,_'_. Mar. 27,1951
‘$2,951,610
Smalley _____' __________ __ Sept. 6, 1960
7 ,IFOREIGN PATENTS
123,526 1 " _ 'Gerlmany '__ '7
device in predetermined relation to ‘the iseleoted portion, ,7
'globefs surfacer,,,said
vaperture,‘being.
'
‘
l Bugbee _'____'__V_, _______ __ Apr; 7, ‘1925 ,
2,347,658
i' , selected jportion of the' earth’s map visible therethrough, :
said device'ihaving vaz'sightingraperture for aligning the p 5,
i . " ofirthe'r-map on
.
References Cited in the ?le of this patent v
'
, 7 said support having a pairof diametrically opposed up- '
V
;
"808,938: 7'
" _._;
__ Oct. 3, 1900
France ____;_____V ____ __>___1 Feb. 18, 1937
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