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Патент USA US3022637

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.Feb.27,1962
Filed Aug. 15, 1958
H. B. GROW
3,022,626
2 Sheets-Sheet 1
INVENTOR.
' Harlow B. Grow
BZ/MQMZ
ATTOEA/E Y
Feb. 27, 1962
H, B, GROW
'
CLOCK
I
Filed Aug. 15, 1958
3,022,626
2 Sheets-Sheet 2
m?’
a
45 23
INVENTOR.
45 44 3674/43
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I
K
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Her/0w B Grow
“La/6W
"
ATTO’QNEY
States Patent G f
1
3,022,626
CLOCK
Harlow B. Grow, 16530 Chattanooga Place,
Pacific Palisades, Calif.
Filed Aug. 15, 1958, Ser. No. 755,282
7 Claims. (Cl. 58-—5tl)
3,022,626
Patented Feb. 27, 1962
2
forms of which are illustrated in the accompanying draw
ings, wherein:
MG. 1 is a face view of a clock constructed in accord
ance with one form of the present invention, and showing
the hour indexer and the fractional hour indicator in the
form of hands, the index hand being shown at 12 o’clock
and the fractional hour indicator hand approaching the
This invention relates to clocks, and has for its principal
three-quarter hour, for example, 12:45.
objects to provide a simpli?ed clock mechanism and to
FIG. 2 is a fragmentary portion of the face side of
facilitate reading of the time at a distance and par 10 the clock and showing the hands superimposed to indi
ticularly clocks having dials of large diameter.
cate the one hour position of 1 o’clock.
For example, simpli?ed clocks as heretofore constructed
FIG. 3 is a view similar to FIG. 2, but showing the
were usually equipped with a single hand, and time was
fractional hour indicator hand approaching the quarter
determined by noting the position of the single hand
hour after 1 o’clock.
between the hour and the following hour on the dial. 15
FIG. 4 is an enlarged section through the dial portion
If the hand pointed directly at the 2 marking on the
of the clock taken on the line 4-4 of FIG. 1, and show
dial, the time was 2 o’clock, or if the hand pointed to
ing the clock works which actuates the hands in side
a midway position between the 2 and 3 marks on the
elevation.
dial, the time was 2:30, and so on around the face of the
FIG. 5 is a face side of a modi?ed form of clock where
dial. But such clocks are difficult to read, particularly 20 by the hour is indexed by a beam of light, indicating
at a distance, because there is no other hand with which
12 o’clock.
the position of the single hand can be compared. Con
FIG. 6 is a fragmentary view of the face Side of the
ventional clocks with hour and minute hands may also
‘clock in FIG. 5 and showing the fractional hour indi
be difficult to read in some circumstances, for example,
cating beam passing the quarter hour after the indexed
at a distance or in poor light, when 1:10 might be mis 25 hour of 12 o’clock.
taken for 2:05, and the like.
FIG. 7 is a perspective view of the beam control ele
In overcoming these difficulties, the present invention
ments in the clock of FIG. 5.
contemplates a clock having two hands, wherein the hands
FIG. 8 is an enlarged section through the clock on
are so moved that they have reference portions thereof
the line 8-3 of FIG. 5 and showing the clock works
superimposed each hour on the hour, and one hand,
in elevation.
termed the index hand, remains stationary while the other
FIG. 9 is an enlarged section showing the detent for
hand is advancing to bring the reference portion thereof
‘retaining the hour indexing beam control element and
toward the next hour, to indicate the fraction of an hour
the lever of‘the fractional hour indicating beam element
elapsed between onihour positions. For example, on the
in position for releasing the detent when the fractional
hour of 12 o’clock, the reference portions of the hands 35 hour indicating beam has reached the next hour position.
are directly superimposed, and means is provided for
Referring more in detail to the drawings, and ?rst to
detaining the index hand with the reference portion there
the form of invention shown in FIGS. 1 to 4, inclusive:
of at 12 o’clock to indicate that the hour is 12 o’clock,
1 designates a clock constructed in accordance with
While the other hand moves to carry the reference point
one form of the present invention, and which includes a
of that hand across the dial toward 1 o’clock, the time 40 dial 2, a clock works 3, an hour index hand 4, and a
after the hour being noted by the size of the segment of
fractional hour indicating hand 5. The clock works 3
the dial appearing between the reference portions of the
may comprise a motor 6, which may be spring or elec
hands. When the reference portion of the moving hand
trically operated, to drive a shaft 7 one revolution every
has reached the 1 o’clockposition, the index hand is
twelve hours, as in the case of a standard clock. The
immediately released so that the reference portions of 45 speci?c type of clock works and mounting thereof rela
both hands are again superimposed to indicate 1 o’clock,
tive to the dial form no part of the present invention,
at which the index hand again becomes fixed while the
as any type of clock works may be used and mounted in
moving hand approaches 2 o’clock, the size of the seg
any suitable manner, depending upon the character and
ment betweenv the reference portions again being noted
style of clock to which the invention is to be incorporat
‘to determine the time elapsed after the hour designated
ed. In the illustrated instance, the dial 2 comprises a
plate 8 having circular series of divisions 9 designated by
by the index hand. Thus, as the reference portion of the
the numerals 1 to 12 to indicate a 12-hour period, the
index hand notes the hour, the reference portion of the ,
other hand indicates the fractional part of an hour that
numeral being indicatedvas at 10. The divisions are in
dicated by principal marks 11, and each division is di
has passed from the reference portion of the index hand
55 vided into fractions of an hour, as represented by the
by the size of the segment therebetween.
secondaryrmarks 12. In the illustrated instance, the
With the above in mind, other objects of the present
invention are to provide a simple mechanism for detain— ' divisions are divided into quarters to indicate, respec
tively, one-quarter, half and three-quarter periods after a
ing the index hand; to provide for continuous movement
preceding hour mark 11. The motor 6 is shown in the
of the other hand; to provide for automatic ‘release of the
index hand after the moving hand has reached the next 60 drawings as an electric motor supplied with current
through conductors 13 and 14 that may be connected
hour position; and to provide for storing energy to effect
with a suitable source of current supply. The clock
shifting of the index hand to its next position.
works may be mounted on the rear of the dial 2, and
It is a further object of the invention to indicate time
the driven shaft 7 thereof projects through a central open
by means of beams of light, one of which is used as an
ing 15 of the dial to carry the hands 4 and 5 thereon.
index beam to indicate the hour and the other the frac~ 65
The index hand 4 preferably has a sleeve-like hub 16
tion of the hour elapsed during the indexed hour, whereby
that is loosely carried on the shaft 7 to provide a stable
a clock of very large size is mechanically practicable.
support for the hand 4 as it projects radially over the
It is a further object of the invention to provide a
dial 2 and terminates in a point to provide a reference
novelty clock adapted for advertising purposes.
70 portion 17 over the hour marks 11. The hand 5 is ?xed
In accomplishing these and other objects of the inven
to the shaft 7 in outwardly spaced relation with respect
tion, I have provided improved structure, the preferred
to the index hand 4 and is adapted to turn with the shaft
3,0 eases‘
3
A
7. Also sleeved over the shaft between the hands 4
and 5 is a coil spring 18 having ends 19 and 20 arranged
to engage, respectively, in openings 21 and 22 of the
in the arm 36 and disk 35, respectively, whereby when
respective hands, as shown in FIG. 4, whereby when
the arm 36 is rotated and the disk 35 is held stationary,
the spring 39 is tensioned about the shaft 7. The disk
35 is held in its stationary positions by a detent 44 that
the hand 5 is turned and the hand 4 is held stationary,
is ?xed thereto and which has a tooth 4-5 engaging the
the spring 18 is tightened about the shaft while the hand
circular series of recesses 23 in the face of the dial 2.
5 is moving from one hour position 11. toward the next,
The arm 36 is preferably attached to a hub 47 that is
?xed to the shaft 7 and which carries a radially extend
to store up and provide the action necessary to move the
hand 4i from one hour position 11' to the next when the
ing arm or lever 48 that is adapted to engage a cam por
hand 4- is released, as now to be described.
10 tion 159 on the trailing end of the detent 44 to lift the
tooth 45 of the detent out of the notch 23 to shift the
in order to detain the hand 4 at the hour positions,
main beam of ligh between the next hour positions, as
the dial has a circular series of stops which may be pro
vided by depressions 23, or the equivalent, to be engaged
later described. The control elements 31 and 32 just
described are covered by a canopy 5% that is supported
by a tooth 24 on the end of a resilient arm or detent
in outwardly spaced relation over the face of the dial
25 that may be connected with the hand 4 on the trailing
on posts 51, whereby the control elements are free to
side thereof. The stops 23 are of a number correspond
move thereunder to direct or cast a light beam from a
ing to the hours 11 on the dial, and when the point 17
light source such as an electric lamp 52 (FIG. 8) that is
of the hand 4 is at any one of the hour positions 11 on
carried by a socket 53 depending from the center of the
the dial, the tooth 24 is engaged with one of the stops
23 to hold the hand in stationary position to effect an 20 shield and supporting the light bulb 52 in position where
by a beam of light is directed through the slot-like open
chorage of the end Ztl of the spring 18. Therefore, as
ing 38 in the wall 33, the width of the opening 38 being
the hand 5 continues its movement, the spring 18 winds
such as to cast a beam of light having a width correspond
ing to the hour spaces on the dial, as shown in FIG. 5.
position. The release of the detent tooth 24 is elfected, 25 The panel 32 is of a coior different from the color
or" the light from source 52 to color the beam of light
in the illustrated instance, by means of an arm 26 that
3%, for example, red, as the panel 37 passes across the
is ?xed to and extends radially from the hand 5 and
slot-like opening, and whereby the forward edge of the
which extends to the dial for engaging under a cam
beam 30 indicates the time elapsed after the main beam
portion 27 on the arm 25 to lift the tooth 24 from the
on the shaft 7 to store up action necessary to move the
index hand 4 when the hand 5 has reached the next hour
stop 23 by the time the point or reference portion 28 30 of light has shifted between the hour positions, for ex
ample, the position between 12 and 1 o’clock as indicated
of the hand 5 has reached the next hour position 11.
in PEG. 5. As the panel 37 is rotated to traverse the
Upon release of the hand 4, the action stored in the
opening 38, the colored beam of light 35? moves from
spring 18 is sufficient to snap the hand 4 to the next hour
the 12 o’clock position toward the 1 o’clock position and
position, at which the tooth 24 of the arm 25 engages
the forward edge thereof indicates in any one position
the next stop 23 corresponding to the next hour posi
thereof the fraction of an hour past 12 o’clock. By the
tion. On thus releasing the hand 4, the hands are in
time the forward edge of the colored light beam reaches
position so that the points or reference portions 17 and
the 1 o’clock mark, the release arm 43 has engaged the
28 thereof register with the next hour position, indicat
cam 49 of the detent 44 to lift the tooth 45 of the detent
cam end 27 of the arm 25 moves away from the release 40 out of the notch or stop 23 which is then engaged by
ing 1 o’clock (FIG. 2). During this movement, the
the tooth 45, whereupon the spring 39 is eitective to turn
the element 31 until the notch 38 registers with the space
arm 26. Movement of the hand 4 unloads the spring
18, but as the hand 5 continues its movement, the spring
"i8 begins to retension to store up the action necessary
for shifting the index hand 4 to the next hour position
11 upon release of the tooth 24 of the detent 25 by con
tact of the arm 26 with the cam end 27 of the detent
25 at the time the fraction of an hour hand 5 has reached
between 1 and 2 on the dial and a portion of the wall
34 on the trailing side of the notch 31$ covers the panel
37 so that the beam of light 29 spreads across the space
the 2 o’clock position, whereupon the hands again regis
tween the hour marks, the tooth 45 on the detent 44 en
ter to indicate the time of 2 o’clock.
gages the notch 23 corresponding to the 2 o’clock mark
on the dial to stop and hold the element 31 as the panel
As the hand 5
approaches the ?rst of the division marks, the time
between the 1 and 2 o’clock positions, indicating that the
time is 1 o’clock. When the light beam is in position be
is a quarter hour or ?fteen minutes after 2 o’clock, and 50 37 of the element 32 moves across the slot 38 to in
dicate the time elapsed after 1 o’clock. When the for
so on until the hand 5 has reached 3 o’clock, whereupon
ward side of the beam 30 reaches the 1 o’clock position,
the time is 3 o’clock and the index hand 4» is released to
the arm 48 engages the cam 49 of the detent 44 to release
start another cycle of operation.
the element 31, whereupon the spring 39 rotates the ele
In the form of invention shown in FIG. 5, the dial 2
corresponds with the dial of the ?rst form of the inven 55 ment 31 to the next hour position, and therefore projects
the main beam of light 29 across the space between the
tion and includes the corresponding hour marks 11 and
1 o’clock and 2 o’clock designations on the dial, and as
fractional hour markings 12. In this form of the in
the colored beam 3t) again becomes visible, the time is
vention, beams of light 29 and 30 are substituted for
indicated thereby in fractions of an hour after 1 o’clock.
the hands 4 and 5, the beams of light being controlled
60
From tl e foregoing it is obvious that I have provided
by elements 31 and 32, as now to be described.
a novelty clock wherein each hour in designated by an
The element 31 is to control the light beam which
indexer or indicator that traverses the same course over a
provides the index, and includes a cup-shaped shield 33
single dial with the indexer moving step by step while
having a cylindrical wall 34 extending circumferentially
the indicator is in continuous movement. In the ?rst
of a disk 35 which is loosely positioned on the shaft 7
similarly to the hand 4 previously described. The ele 65 described form of the invention the indicator is a hand
4 and in the second described form a beam of light 29,
ment 32 includes an arm 36 that is ?xed to the outer end
and the fractional hour positions which elapse between
of the shaft '7 to rotate therewith about the face of the
one and the next hour are indicated by the hand 5 in the
dial, the arm 36 and shaft making one revolution in each
?rst described form of the invention and the colored beam
twelve-hour period, as the hand 5. The arm 36 carries
of light 3% in the last described form of the invention.
a transparent panel 37 that is adapted to move about the
inner face of the wall 342- to cover a slot-like opening 38
in the wall. Positioned on the shaft 7 between the disk
35 and the arm 36 is a coil spring 39 corresponding to
In this way, an observer of the clock reads time by a
designated hour and whatever fraction of an hour has
the spring 18 previously described, and which has termi
hands or the relative widths of the beams of light 29 and
elapsed merely by noting the space segment between the
nals 46 and 41 that engage in the openings 42 and 43 75 30. In other words, the time can be determined all
absence
5
6
within the space between the designated hour and the
following hour mark on the dial.
engaging one of the stops for holding the index means at
_
What I claim‘ and desire to-secure by Letters Patent is:
l. A clock, including a circular dial completely ex
posed to view throughout the circumference thereof, in~
dex means for indicating the hour of the day on said
dial, indicating means for indicating the fractions of an
hour on the dial elapsed after the hour indicated by said
index means, means for mounting said index means and
said indicating means coaxially of the dial, means for con
tinuously advancing the fraction of an hour indicating
the position of the indicated hour While the fractional
hour indicating means is advancing over said dial to the
next succeeding hour designation on the dial, release
means carried by the fractional hour indicating means
and movable in the path of the detent for releasing the
detent, and a spring having one end connected with the
fractional hour indicating means and the other end con
nected with the index means and tensioned responsive to
10 movement of the fractional hour indicating means for
means over the dial one revolution every twelve hours,
means for detaining the index means at the position of
the indicated hour while the fractional hour indicating
means is advancing over said dial to the next succeeding
hour on the dial, and means for advancing the index means
from the indicated hour designation to said next succeed
ing hour designation at the time the fractional hour in
advancing the index means from the indicated hour on
the dial to said next succeeding hour at the time the frac
tional hour indicating means arrives at the said next
succeeding hour.
5. A clock, including a dial provided with hour and
intermediate fractional hour designations in a full cir
cular series and completely exposed to view throughout
the entire circular series of designations, a shield having
dicating means arrives at the said next succeeding hour.
an annular wall provided with a slot, means supporting
2. A clock, including a dial provided with hour and 20 the shield for rotation at the axis of the dial with the
intermediate fractional hour designations in a full cir
slot positioned within the radial direction of said desig~
cular series and completely exposed to view throughout
nations, a light source in the shield for casting a beam
the entire circular series of designations, index means
of light through the slot for indicating the hour of the
for indicating the hour of the day on the dial, indicating
day on the dial, a transparent panel, means for support
means for indicating the fractions of an hour elapsed 25 ing the panel for movement across the slot for coloring
after the hour indicated by said index means, means for
the beam of light for indicating the fractions of an hour
mounting said index means and said indicating means
elapsed during the hour indicated by said beam of light,
coaxially of the dial, means for continuously advanc
means for continuously advancing the panel around the
ing the fraction of an hour indicating means around the
wall of the shield one revolution in the time correspond
dial one revolution in the time corresponding to the sum 30 ing to the sum of the hour designations, means for de
of the hour designations, means for detaining the index
taining the shield at the position of the indicated hour
means at the position of the indicated hour while the
while the panel is moving over said slot, and means for
fractional hour indicating means is advancing over said
advancing the shield from said detained position to in
dial to the next succeeding hour designation on the dial,
dicate the next succeeding hour at the time the panel
and means for advancing the index means from the in 35 has completely traversed the slot.
dicated hour on the dial to said next succeeding hour
6. A clock, including a dial provided with hour and
at the time the fractional hour indicating means arrives
intermediate fractional hour designations in a full cir
at the said next succeeding hour.
cular series and completely exposed to view throughout
3. A clock, including a dial provided with hour and
the entire circular series of designations, a shield hav
intermediate fractional hour designations in a full cir 40 ing an annular wall provided with a slot, means support
cular series and completely exposed to view throughout
ing the shield for rotation at the axis of the dial with
the entire circular series of designations, index means for
the slot positioned within the radial directions of said
indicating the hour of the day on the dial, indicating
designations, a light source in the shield for casting a
means for indicating the fractions of an hour elapsed after
beam of light through the slot for indicating the hour of
the hour indicated by said index means, means for mount 45 the day on the dial, a transparent panel, means for sup
ing said index means and said indicating means coaxially
porting the panel for movement across the slot for col
of’ the dial, means for continuously advancing the frac
oring the beam of light for indicating the fractions of an
tion of an hour indicating means around the dial one
hour elapsed during the hour indicated by said beam of
revolution in the time corresponding to the sum of the
light, means for continuously advancing the panel around
hour designations, means for detaining the index means
the wall of the shield one revolution in the time cor
at the position of the indicated hour while the fractional
responding to the sum of the hour designations, a cir
hour indicatinglmeans is advancing over said dial to the
cular series of stops corresponding to the hour designa
next succeeding hour designation on the dial, means mov
tions, a detent carried by the shield for successively en
able with the fractional hour indicating means for trip
ping said detaining means, and spring means connecting
gaging the stops for detaining the shield with the slot
at the position of the indicated hour while the panel is
moving over said slot toward the next succeeding hour
the index means with the fractional hour indicating means
for advancing the index means from the indicated hour
designation on the dial, a detent release means movable
of the dial to said next succeeding hour after tripping
with said panel and engageable with the detent to re
of the detaining means at the time the fractional hour in
lease the shield, and a spring connecting the shield with
dicating means arrives at the said next succeeding hour. 60 the panel supporting means for advancing the shield from
4. A clock, including a dial provided with hour and
said detained position to indicate the next succeeding
intermediate fractional hour designations in a full cir~
hour at the time the panel has traversed the slot.
cular series and completely exposed to view throughout
7. A clock as described in claim 1, wherein the said
the entire full circular series of designations, stops cor
fractional hour indicating means and said hour index
responding to the hour designations, index means for 65 means each include a hand movable over the dial.
indicating the hour of the day on the dial, indicating
References Cited in the ?le of this patent
means for indicating the fractions of an hour elapsed
UNITED STATES PATENTS
after the hour indicated by said index means, means for
mounting said index means and said indicating means co
axially of the dial, means for continuously advancing the 70
fraction of an hour indicating means around the dial
one revolution in the time corresponding to the sum of
the hour designations, a detent on the index means for
555,387
1,774,579
1,851,982
2,011,517
2,310,900
Long ________________ -_ Feb. 25,
White _______________ __ Sept. 2,
Parker _______________ -_ Apr. 5,
Geotfrion ____________ -_ Aug. 13,
Mayer _______________ __ Feb. 9,
1896
1930
1932
1935
1943
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