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Патент USA US3098319

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July 23, 1963
Filed Nov. 15, 1961
4 Sheets-Sheet l
" Sam E‘ Elwood
July 23, 1963
Filed Nov. 15. 1961
4 Sheets-Sheet 2
v 0%
Sam E Elwo'od
July 23, 1963
July 23, 1963
Filed NOV. 15, 1961
4 Sheets-Sheet 4
Sam 1:‘ Elwood
BY ,ékmméik.
WWW 15mg‘
United States Patent 0
Patented July
23, 1963
FIGURE ‘10 is a perspective view of the operating
member for rotating the tabulating indicator wheels.
Sam F. Elwood, R0. Box 2612, Sacramento 12, Calif.
Filed Nov. 15, 1961, Ser. No. 152,527
7 filaims. (Cl. 40-107)
The present invention generally relates to a perpetual
calendar having a built-in tabulator and represents an
Referring now speci?cally to the drawings, the nu
meral 10 generally designates the perpetual calendar ma
chine of the present invention including a ‘generally hol<
low cabinet 12 having 1a top wall 14, a bottom wall 16,
a rear wall 18, and a front wall 20 disposed in inclined
relation to the back wall 18 ‘and including a short ver
tical portion 22 at the bottom edge thereof. The afore
improvement on co-pending application Serial No. 52,860, 10 mentioned Walls are interconnected by end Walls 24,
with one end wall 24 having an enlarged opening 26
therein, with a closure door 28 therefor hingedly at
tached to the rear edge of the opening 26 by a hinge 30
The primary object of the present invention is to pro
and provided with 'a knob 32 ‘for opening and closing
vide ‘a perpetual calendar with a built-in tabulator hav
ing a range from the year 1753, the ?rst full year fol 15 the closure door 28 which may be provided with a suit
able friction latch or any other suitable latch for retain
lowing the last adjustment of the calendar in October
ing the closure door in closed position.
1752 until a subsequent change in the present calendar
The bottom 16 is provided with a plurality of semi
at some unknown future date. Thus, it can be said that
spherical feet 32' or the like and the upper surface of the
the range ‘of the perpetual calendar of the present inven
bottom 16 is provided with an insert 34 having a plurality
tion is unlimited since ?ve century arrangements are
of grooves 36 therein which are in alignment with grooves
shown and since the calendar repeats itself every four
38 in a top insert 40 carried by a partition bracket or
hundred years.
plate 42. The grooves ‘36 and 38 sli-dably receive ver
Another object of the present invention is to provide
tically disposed calendar plates 44, and as illustrated in
a perpetual calendar ‘machine having seven calendar
?led on August 30, 1960, for a Perpetual Calendar As
plates associated therewith having tab markings thereon 25 FIGURE 2 there are seven calendar plates numbered from
in which one side of the calendar plate will be for a
regular year and the opposite side of the calendar plate
will be ‘for a leap year.
Still another feature of the present invention is to pro
O to 6, with the insert 40' having numerical indicia 46
thereon designating the particular slot for a particular
calendar plate or card 44.
The front wall 26 is provided with a recess 48 closed
vide a perpetual calendar having manually operable in 30 by lan offset wall 50‘ for forming a pocket for receiving
the calendar plates 44. The bottom edges of the recess
dicator Wheels for enabling the year date to be dialed,
48 is provided with an aperture 52 through which a
which also will automatically dial the desired information
to indicate the calendar plate to be used and provide
indicia for guiding the person using the device in the
operation thereof.
Another object of the present invention is to provide
a perpetual calendar machine in accordance with the pre
ceding objects which is relatively simple in construction,
spring catch 54 extends having a rounded end 56 engag
ing the bottom edge of the calendar plate 44. Thus, the
rounded end 56 of the spring catch 54 will engage the
bottom edge of the calendar plate 44, thus locking the
calendar plate 44 within the recess so that it may be
easily observed by persons using the machine of the pres
easy to operate, ‘compact, neat in appearance and gen
ent invention.
in like numerals refer to like parts throughout, and in
FIGURE 1 is a perspective view of the perpetual cal
'With a knob 68 on the outer end thereof for operation and
a collar 70 on the interior of the sleeve 64, thus guiding
The spring catch ‘54 is carried by a supporting bracket
erally inexpensive to manufacture.
58 attached to the bottom 16 by virtue of a fastener 60‘.
These, together with other objects and advantages
Also, an ejection plunger 62 is provided adjacent the bot
which will become subsequently apparent, reside in the
edge of the calendar plate 44 and the ejection plunger
details of construction and operation ‘as more fully here
‘62 is slidably received in a tubular member 64 having a
inafter described and claimed, reference being bad to
the accompanying ‘drawings forming a part hereof, where 45 removable cap 66 thereon. The plunger 62 is provided
endar machine of the present invention;
FIGURE 2. is a vertical sectional view taken substan
tially upon a plane passing ‘along section line 2—2 of
FIGURE 1 illustrating .the storage of the calendar plates
and the orientation of the tabulating mechanism;
movement of the plunger 62. Thus, when the calendar
plate 44 is placed in the recess, the plunger will be forced
inwardly and the bottom edge of the calendar plate will
engage the spring catch which will retain the calendar
plate 44 releasably within the recess 48. By pushing the
plunger 62 inwardly by engaging the knob 68 which is ac
cessibfle through the opening 26, the bottom edge of the
FIGURE 3 is an exploded elevational view of the 55 calendar plate will be forced outwardly and released from
tabulati-ng mechanism with portions thereof broken away
and reorientated ‘for clarity;
FIGURE 4 is a detailed sectional view of the tabulator
mechanism illustrating the orientation of the components
FIGURE 5 is a sectional view illustrating the construc
the spring catch 54 wherein the calendar plate may then
be removed and replaced with another calendar plate or
inverted so that the opposite side thereof is facing out
Disposed along the top edge of the front wall 20 above
the recess 48 is a slot 72 and a slot 74 in alignment there
with in which the slot 74 is generally in the center of the
top edge of the front wall and indicates the year date,
FIGURE 6 is a plan view of the indicator wheels and
while the slot 72 reveals indicia employed in conjunction
mask assemblies mounted thereon;
65 with the calender plate. On the opposite side of the slot
‘FIGURE 7 is a partial plan View illustrating another
74 from the slot 72 is a plurality of operating members
relative position of the indicator wheels;
76, 78 and 180, each of which has indicia associated there
FIGURE 8 is ‘an exploded perspective view illustrating
with indicating centuries, decades and years, respectively,
the relationship of the indicator wheel;
and each of which ‘has a crossed slot 82 therein for re
FIGURE 9 is a perspective view of two indicator wheels 70 ceiving an implement such as a screwdriver 84 illustrated
in their assembled condition with the mask disposed
in FIGURE 10 having a shank 86 vwith a driving head
88 with a crossed projection 89 thereon for engagement
tion of the drive mechanism for the tabulator;
with the crossed slots 82.
This arrangement may be the
same or substantially the same as a “Phillips” screw and
screwdriver assembly whereby the tool or screwdriver
84 is required for operating the tabulator from the front
surface of the top wall, thereby enabling the year date
and other indicia appearing through the slot 72 to be
changed as desired or required by the particular use of
the invention.
width to have two numerals thereon for indicating the
centuries. The gears 154, 158 and 162 respectively are
pinned to the wheels 148, .150 and 152 respectively by
diametrically disposed pins 168 for rotation therewith
whereby the wheels 148, 150 and 152 will be rotated in
response to rotation of the operating members 80, 78 and
76 respectively.
Disposed in longitudinally spaced relation to the gear
Disposed above the partition wall 42 is an elongated
162 is a plurality of gears 170, 172 and 174. The gear
shaft 90 supported by a plurality of longitudinally spaced 10 170 is in meshing engagement with a gear 176 on the shaft
brackets 92 carried by reinforcement members or
108, the gear 176 having a spacer 178 connected thereto.
brackets 94 overlying the partition plate 42 and secured
The gears 160 and 176 are mounted directly on the shaft
‘to the back Wall 18 by screw threaded fasteners 96. The
108 as are gears 144 and 190.
rear portions of the brackets or supports 92 are formed
The gear 172 is in meshing engagement with a smaller
as diverging legs 96 and 98 which are also secured to a 15 gear 180 carried directly on the shaft 104 for rotation
reinforcing member or bracket 100 attached to the rear
therewith and the gear 174 is in meshing engagement
Wall 18 by screw threaded fasteners 102. Disposed in
with a gear 182 carried directly on the shaft 106. At the
spaced and eircumferentially arranged relation to the
end of the shaft 90 another set of gears 184, 186 and
shaft 90 is a plurality of shafts 104, 106 and 108. The
188 are provided, with the gear 184 being in meshing
shafts 104 and 106 are supported from laterally extending 20 engagement with a smaller gear 190 on the shaft 108, the
supports 110 carried by the leg 98 and disposed to each
gear 186 being in meshing engagement with a smaller
side thereof, while the shaft 108 is supported by a lat
gear 192 on the shaft 106 and the gear 188 being in mesh
erally extending leg 112 on the leg 94 of .the bracket 92,
ing engagement with a smaller gear 194 on the shaft 104.
thus forming a rigid support for the various shafts inas
Disposed on the shaft ‘90 and intermediate the gears
much as there are a plurality of supporting brackets 92 25 174 and 184 is a plurality of indicator wheels designed
spaced longitudinal-1y thereof.
For purposes ‘of clarity in describing the invention,
FIGURE 3 is an exploded elevational view in which the
shafts 104, 106 and 108 have been displaced to be dis
posed above and below the shaft 90, with FIGURES 4
and 5 illustrating the actual relationship of the shafts to
each other.
Mounted on the shaft ‘90 are three large gears 114, 116
and 118. Each of the gears has rigidly af?xed thereto at
the center thereof a bevel gear designated by numerals
120,122 and 1124. In meshing engagement ‘with the bevel
by reference numerals 196i, 198, 200, 204 and 206. These
indicating wheels are also designated respectively as fol
lows for purposes of explanation as C2, Y2, D2, Y3, C3
and D3. Also, the indicator Wheels 148, 150 and 152 are
designated as Y1, D1 and C1. The gear 174 is pinned to
the wheel 196 by pins 208, while the gear 206 is pinned
to the gear 184 by pins 210. The wheel 198 and gear
172 are secured together by virtue of a sleeve 173 ex
tending through the gear 174 and the wheel 196 and ro
tatable on a sleeve ‘175 rotatable on the shaft 90 ‘and the
gear 186 and the indicator wheel 204 are connected to
gether in the same manner. The gear 170 ‘and wheel 200
are connected by sleeve 175 and the gear 188 is con
nected to wheel 202 in the same manner whereby the
gears 120, 122 and 124 is a bevel gear 126, 128 and 130,
respectively, each of which are rotatable about an axis
perpendicular to the axis of the shaft 90 and each of
which is carried by a shaft 132 journalled in a supporting 40 shaft may remain stationary.
bracket 134 supported by the reinforcing member 94
When it is desired to determine the date in some par
with the shaft 132 being in rigid engagement with one of
the members 76, 78 and 80, whereby rotation of the mem
bers 76, 78 and 80 will cause rotation of the gears 118,
116 and 114, respectively, at a reduced rate of rotation
in view of the gear reduction provided through the bevel
gears and due to the smaller gear engaged by the larger
gears 114-118 as described hereinafter.
Each of the gears 114, 1-16 and 118 has a radially ex
ticular month of a particular year, the tool is employed
for rotating the years, decades and century operating
members until the desired year date is dialed and re
vealed through the central slot. The indicia revealed
through the slot towards the left edge of the front wall
will indicate which of the calendar cards is to be removed
from the container and placed in the recess provided
therefor so that a calendar for that complete year will
tending lug 136 thereon forming a stop for engagement 50 be observed. FIGURE 7 illustrates such an arrange
with an abutment 138 carried by suitable brackets 140
whereby the rotational vmovement of the gears 114-118 is
ment in which the mask attached to certain of the wheels
will cover certain of the indicia in certain positions and
enable certain of the indicia to be revealed, thus indi~
Mounted on the shaft 104 is a small gear 142 in mesh
cating the card to be used.
ing engagement with the gear 114. Oarried on the shaft 55
There are seven calendar plates which have tab mark
108 is a small gear 144 in meshing engagement with the
ings zero through six and each plate will have on one
gear 116 and carried on the shaft 106 is a small gear 146
side the regular year and on the opposite side the leap
in meshing engagement with the gear 118 whereby the
shafts 104, 106 and 108 will be rotated depending upon
The ?rst day of the year and the corresponding tab
which of the operating members 76, 78 and 80 are op 60 will be as follows:
erated by the tool 84. The limit stops limit the travel
Plate 0
of the dialing wheels which are geared to the drive wheels.
__ L0 Sunday
Disposed on the shaft 90 in longitudinally spaced re
lation to the gears 114 and 118 are three indicator wheels
Plate 1
including a year wheel 148, a decade wheel 150 and a
__ Ll Monday
century wheel 152. Disposed to the right of the year
wheel 148 is an enlarged gear 154 in meshing engagement
Plate 2
with a small gear 156 carried by the shaft 104. Disposed
_.. L2 Tuesday
intermediate the decade wheel 150 and the century wheel
152 is a large gear 158 in meshing engagement with a 70
Plate 3
small gear 160 carried by the shaft 108. To the left of
the century Wheel 152 is a large gear 162 in meshing en
R3 Thursday _____________________ __ L3 Wednesday
gagement with the small gear 164 on the shaft 106. The
Plate 4
century wheel 152 is provided with a wider portion 166
which partially covers the gear 158 and provides sui?cient 75 R4 Friday ________________________ __ L4 Thursday
4. The structure as de?ned in claim 3 wherein the in
terior of said casing includes an upper and lower mem
Plate 5
R5 Saturday __________________ __- ____ __ L5
her having a plurality of inwardly facing grooves formed
therein, and a plurality of calendar cards slidably re
Plate ‘6
R6 Sunday ______ __- ________________ __ L6 Saturday
5 ceived in said grooves.
The letter R in the tabs denotes a regular year, while
the letter L denotes a leap year. To obtain the calendar
plate tab for any year, the numerals following the let
5. In a perpetual calendar, a casing, a plurality of
calendar cards provided with a year calendar each calen
(tar card being further provided with identifying indicia
adjacent one top corner thereof and adapted ‘to be dis
ters R or ‘L are totaled. Should this total be 7 or more,
played on said casing, said casing being provided with
the multiple of 7 is subtracted; for example:
indicator dials in the top thereof, a front wall of said
casing having a slot for revealing a portion of the pe
ripheral surface of the indicator dials, each indicator dial
having numerical indicia thereon for designating a year
Note in FIGURE 7, for the year 1961, the visible tabs 15 date, and means accessible from the exterior of the eas
are R5+-1=R'6: from the calendar plate tab markings
ing for rotating the indicating dials, thus indicating a year
shown in columns 4 and 5, it will be seen that the ?rst day
date centrally above the recessed portion of the front
of this year came on Sunday.
wall, a plurality of indicating dials spaced from and op
Also shown in ‘FIGURE 7, for the year .1850 the vis
eratively connected to the year date indicating dials and
ible tabs are R6‘+2=R8—-7=R1; and for the year 2072 20 operable simultaneously therewith for indicating and
the visible tabs are L3+3+6\=L12I—7=L15.
designating the year card to 'be employed by showing the
The foregoing is considered as illustrative only of the
particular identifying indicia on the card for the particu
principles of the invention. Further, since numerous
lar year dialed, said front wall having an opening therein
modi?cations and changes will readily occur to those
revealing a portion of the periphery of the plurality of
skilled in the art, it is not desired to limit the invention 25 these indicating dials which carry the particular identify
to the exact construction and operation shown and de
ing indica.
scribed, and accordingly all suitable modi?cations and
'6. The structure as de?ned in claim 5 wherein said
equivalents may be resorted to, falling within the scope
means accessible exteriorly of the casing for rotating the
of the invention as claimed.
indicating dials includes a plurality of rotatable mem
What is clm'med as new is as follows:
30 bers disposed substantially ?ush with an inclined surface
1. A perpetual calendar machine comprising a hollow
of the front wall of said casing and being operatively
casing having an inclined front wall, said front Wall in
connected to the indicator dials, each of said members
cluding a generally rectangular recessed portion covering
having a recess therein, and a ‘hand opera-ted tool having
the major portion of the surface thereof for receiving
a head comparable in shape and size to the recesses for
calendar cards, spring means mounted in the front Wall 35 selectively interlocking with the recesses for rotating the
for engaging the bottom edge of the calendar cards for
indicator dials.
retaining the calendar cards in position, and means for
7. In a perpetual calendar, a casing, indicator dials dis
ejecting the cards from the recess portion of the front
posed in said casing, a front wall of said casing having a
wall, said spring means ‘for retaining the calendar card
slot for revealing .a portion of the peripheral surface of
in position including a spring clip having a rounded edge 40 the indicator dials, each indicator dial ‘having numerical
engaging substantially the entire length of the bottom
indicia thereon for designating ‘a year date, means ac
edge of the calendar card, means mounting the clip from
cessible from the exterior of the casing for rotating the
the interior of the casing.
indicator dials, and a plurality of indicating dials spaced
2. The structure as de?ned in claim 1 wherein said
from and .operatively connected to the year date indicat
means for ejecting the calendar card includes a plunger, 45 ing dials and operable simultaneously therewith for indi
means mounting the plunger interiorly of the casing for
movement inwardly and outwardly thereof in perpen
dicular relation thereto, said plunger being disposed ad
jacent the bottom edge for ejecting the calendar card, and
spring means interconnecting the plunger and its mount— 50
ing means for biasing said plunger inwardly of the casing.
3. The structure as de?ned in claim 2 wherein said
casing is provided with an enlarged hollow interior, an
openable closure door in one end of the casing providing
cating and designating a particular calendar to be dis—
played on said casing.
References Cited in the ?le of this patent
McNamara __________ __ 'Dec. 16-, 1930
Bauer ______________ __ Mar. 11, 1952
Great Britain __________ __ Sept. 3, 1935
access to the interior thereof and providing access to the 55
ejecting plunger.
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