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Патент USA US3068341

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Dec. 11, 1962
‘ D. MORRISON ETA].
3,068,331
CLOCK CONTROLLED SWITCH
Filed June 22, 1960
3 Sheets-Sheet 1
m
147TOP/V5K
Dec. 11, 1962
D. MORRISON EI'AL
3,068,331
CLOCK CONTROLLED swITcH
Filed June 22, 1960
'
_
3 Sheets-Sheet 2
//0
/2
4/
DAV/D
INVENTORS.
MORE/SON
350265 P. POSTELL
m
Dec. 11, 1962
D. MORRISON ETAL
3,063,331
CLOCK CONTROLLED SWITCH
Filed June 22, 1960
5 Sheets-Sheet 3
‘50
1/2
/z/ (10
INVENTORS.
mwo
Maze/50M
6;??65 P. P05 r541
ATTOFNIEY .
United States Patent 0
1
3,068,331
CLOCK CONTROLLED SWITCH
David Morrison and George P. Postell, Athens, Ga., as
signors to General Time Corporation, New York, N .Y.,
a corporation of Delaware
Filed June 22, 1960, Ser. No. 37,925
4 Claims. (Cl. 200-38)
3,068,331
,.
CO
Patented Dec. 11, 1962
2
18 and second hand 19. The sleeve and shaft assembly
16 is driven by a shaded pole, synchronous motor. 20
through a conventional gear train with the motor being
energized from a source 21 of A.-C. current (see FIG. 3).
In the illustrated embodiment, switch 11 is arranged to
complete a circuit from the source 21 to an outlet 22.
To this end, the switch 11 includes a housing 23 formed
dielectric material which encloses a ?xed contact 24
and a resilient movable contact 25. Preferably, the
This invention relates to timer controlled switches and
concerns more particularly an operating mechanism for 10 switch is of the normally closed type and thus the resilient
movable contact 25 is mounted in the switch housing 23
a clock switch.
so as to be biased toward engagement with the ?xed con
It has become common to initiate the operation of
tact 24. The contacts 24, 25 are formed with terminal
household appliances with clock controlled switches which
conventionally display the time in the usual way and also
portions 26 and 27 respectively, which extend outside
are effective to close a switch at a selected moment in
much the same way as an audible alarm is activated. In
of the housing 23 and are connected in series with the
outlet 22.
addition to having the switch capable of operation at a
selected time under the control of the clock, it is common
to also provide for manual On-O? control.
It is the primary aim of the invention to provide a
clock controlled switch that reliably affords the full range
of manually Off, manually On, and Automatic clock con
trolled actuation, but which is of a particularly economical
For operating the switch 11, a switch operator 30
formed dielectric material is ?oatingly ‘mounted in a
slot 31 formed in the switch housing 23 adjacent the
frame plate 12. The operator 30 is coupled to the mov
able contact 25 through a ledge portion 32 on the oper
ator against which the contact 25 is biased. The ?oating
mounting of the operator 30 permits the operator to move
design.
independently along two paths. First, theoperator 30
In more detail, it is an object of the invention to provide
a switch and operating mechanism of the above character
that employs a simple, inexpensive two-contact switch
slides along the frame plate 12 so as to operate the switch
11 by carrying the contact '25 into and out of engage
ment with the ?xed contact 24. The operator is illus
trated at one end of this path of movement in FIGS. _6
and 7 and at the other end in FIGS. 8 and 9‘. Second,
the operator 30 can swing or tilt toward and away from
the adjacent frame plate 12 for a purpose to ‘be brought
out below. Again, the operator is illustrated at one end
of this second path in FIGS. 6 and 7 and at the other
end in FIGS. 8 and 9.
assembly which requires no critical manufacturing toler
ances or relationships.
A related object is to provide such a clock controlled
switch that is well suited to mass manufacturing tech
niques.
A further object of the invention is to provide a clock
controlled switch as described above which is rugged and
Pursuant to the invention, the operator is urged both
capable of effective performance over a long service life. 35
toward the frame plate 12 and in one direction along the
Other objects and advantages of the invention will be
frame plate by a single spring wire 35. In the illustrated
come apparent upon reading the following detailed de
construction, the spring wire 35 is anchored at 36 to the
scription and upon reference to the drawings in which:
front frame plate 12 and passes through a slot 37 formed
FIGURE 1 is an elevation of the face of a clock of
40 in the operator 30 with the spring wire being bent so as to
the type in which the invention may be utilized;
urge the operator both toward the frame plate 12 and in a
FIGS. 2 and 3 are top and bottom views respectively
direction along the frame plate to close the contacts 24,
of the clock shown in FIG. 1 and illustrating a switch
25. That is, the spring wire 35 urges the operator 30
and operating mechanism therefor embodying the
toward the right in FIGS. 6, 8 and 10 as well as down
invention;
wardly in FIGS. 4 to 11.
FIG. 4 is a fragmentary rear elevation of the clock
For operating the switch 11 under the control of the
shown in FIGS. 2 and 3 with the motor and rear frame
plate removed;
FIG. 5 is a fragmentary section taken along the line
5—5 in FIG. 4;
FIGS. 6, 8 and 10 are fragmentary sections taken ap
proximately along the line 6—6 in FIG. 4 and showing
the parts in alternate operating positions; and.
FIGS. 7, 9 and 11 are fragmentary elevations similar
to FIG. 4 and taken along the lines 7—-7 in FIG. 6, 9-—-9
in FIG. 8, and 11-——11 in FIG. 10, respectively.
While the invention will be described in connection
with a preferred embodiment, it will be understood that
clock 10, the switch operator 30 and the frame plate 12
are formed with inter-engaging latching portions and the
clock 10 includes a cammed element for unlatching the
operator at a preselected time. In the preferred embodi
ment, the operator 30 is formed with a ?nger 40 adapted
to be received in a slot 41 formed in a front frame plate
12. With the ?nger 40 ?tted into the slot 41, the operator
is latched against downward movement under the urging
of the spring wire 35 and the wire also biasing the operator
toward the plate 12, holds the ?nger 40 in the slot 41. To unlatch the operator, the clock 10 includes an hour
gear 42 forming a part of the motor driven timing train
and a setting gear 43 which is coupled to a setting pointer
.tives, modi?cations and equivalents as may be included 60 44 (see FIG. 1). The hour gear 42 and the setting gear
43 are formed with cooperating cam projections 45, 46
within the spirit and scope of the invention as de?ned
respectively, and the gear 42 is axially shiftable on the
by the appended claims.
shaft assembly 16 so that when the angular position of
Turning now to the drawings, there is shown a clock
the cams 45, 46 coincide, the gear 42 is shifted axially
10 including a switch 11 that is controlled by the clock
away from the frame plate 12. The switch operator 30
and which embodies the invention. The clock mechanism
includes a shoulder portion 47 positioned in the path of
itself includes a frame made up of front and back plates
movement of the hour gear 42 as it is cammed axially
12 and 13 respectively, which are secured in spaced re
from the frame plate 12.
lation by a plurality of posts 14. A dial 15 is mounted
‘In the illustrated clock, a setting knob 48 is mounted
on the front frame plate 12 and is provided with the usual
time displaying indicia as indicated in FIG. 1.
70 for rotational and axial movement in the clock frame and
is arranged to be rotationally coupled with either the hour
Journaled in the frame plates 12, 13 is a sleeve and
gear 42 or the setting gear 43. By utilizing the knob 48
shaft assembly 16 carrying an hour hand 17, minute hand
we do not intend to limit the invention to that embodi
ment. On the contrary, we intend to cover all alterna—
3,068,331
to rotate the hour gear 42, the angular position of the
wire away from the frame plate 12. This movement of
the spring wire also carries the switch operator 30 away
from the frame plate so as to unlatch the ?nger 49 from
the slot 41 and thus permit the tensioned spring wire 35
earns 45 and the setting of the minute and hour hands 17 ,
18 is adjusted. By utilizing the knob 43 to rotate the set
ting gear 43, the angular position of the cams 456 and the
setting of the pointer 44 is adjusted.
To brie?y summarize the operation of the switch 11
to slide down the cam 61 and carry the switch operator
3% along the frame plate 12 in the direction to close the
under the control of the .clock 10, it will be assumed that
contacts 24, 25. With movement of the cam 61 into
engagement with the spring wire 35, the abutment 56
is swung from under the kink 57 and thus the wire is
‘the ‘knob 48 has been used both to set the clock hands
17, 18 and to adjust the pointer 44 to indicate the time
at which it is desired to operate the switch 11. The switch 10 freed for movement of the switch operator 30 to operate
is conditioned for operation by the clock 1% when the
the switch 11. This position of the parts is shown in
switch operator 30 is latched in the FIGS. 6 and 7 posi
FIGS. 10 and 11.
tion with the ?nger 40 resting in the slot 41. In this
To condition the switch operator for clock controlled
position the operator holds the movable contact ‘25 out
operation, the control member 54) is rotated through its
of engagement with the ?xed contact 24.
15 “Off” position to a third position where both the cam
61 and the abutment 56 are clear of the spring wire 35.
When the hour hand 17 reaches the time indicated by
the pointer 44, the angular positions of the cams 4-5, 46
in this position, shown in FIGS. 6 to 9, the switch
coincide so that the hour gear 42 is urged axially from
operator 30 is free to move from its latched to its un
latched positions under the control of the shiftable hour
the plate 12 into engagement with the shoulder portion 47
gear 42 in the manner previously explained. With the
of the operator 30. The operator is thus tilted back
from the frame plate against the bias of the spring wire
abutment 56 and cam 61 in the positions shown in FIGS.
35 so that the ?nger 49 moves from the slot 41 unlatch‘
6 to 9, the knob 55 points to the “Auto” indica, a con
ing the operator, whereupon the spring wire 35 slides the
venient abbreviation for “Automatic,” appearing in
operator along the frame plate 12 so as to close the
contacts 24, 25. This is the position of the parts illus
trated in FIGS. 8 and 9. ‘It can thus be seen that the
FIG. 1. It is important to note that the control member
51} must be moved through its “Oif” position to reach
the “Auto” position. in this way, the abutment 56
switch 11 is, operated by unlatching the switch operator 31}
sweeps beneath the kink 57 so as to lift the control mem
upon axial movement of the hour gear 42 at the time
ber 39 along the frame plate 12 and allow the ?nger 40
to latch in the slot 41. Thus, the switch operator 30 is
selected by the setting of the pointer 44.
conditioned for clock controlled operation as an inci
In accordance with the invention, a control member 51'?
is positionably mounted in the frame plates 12, 13 and
provided with abutment and cam portions for manually
shifting the voperator 36 to alternatively condition the
dent to rotating the knob 55 into the “Auto” position.
Those skilled in the art will appreciate that the switch
11 is of the most simple design, utilizing but two con
switch 11 for clock controlled operation or to open or
tests of which only one is movable. In addition, the
close the switch contacts. "In the preferred embodiment, 35 mounting position of the movable contact is not critical
with respect to the position of the ?xed contact and
the member 5% is journaled in the frame plates 12, 13
hence the switch 11 can be quite economically manufac
so as to have a slight amount of axial movement. A
tured.
helical spring 51 is compressed between the rear frame
The operating mechanism for the switch 11 is also
plate 13 and a shoulder portion on the member 50 (see
FIG. ‘5) so as to urge a projection 52 formed on the 40 quite simple, utilizing but a single switch operator and
a single manually positioned control member.
member 59 against the front frame plate 12 (see also
FIG. 10). A pair of detent lobes 53 and 54 are formed
on the front frame plate for cooperation with the pro
jection 52. The spring seats the projection 52 on one
Despite
the simplicity, and economy, of the arrangement illus
trated, the full range of manual “O?”, manual “On”
and “Automatic” clock controlled operation is achieved.
It will also be seen that the switch 11 and the parts
side or the other of each of the lobes 53, 54- so that a
‘three position detent lock is provided for the control mem
er 50. In one detented position, the projection 52 is
above the lobe 53, in the second detented position the
projection 52 is between the lobes 53, 5d and in the third
position the projection 52 is below the lobe 54. For 50
manually rotating the control member 5%} into any one of
making up its operative mechanism can be quite ruggedly
constructed and, since there are no dimensional relation
ships which could get out of adjustment, the clock con
trolled switch is capable of performing effectively over
long periods.
We claim as our invention:
its three positions, a knob 55 is carried on the outer end
1. A clock controlled switch comprising, in combina—
of the member 50 (see FIGS. 1 and 2).
For shifting the switch operator 30 to manually open
the switch 11, the control member 50 is provided with
tion, a frame member, a movable contact and a ?xed
contact each anchored relative to said frame member,
to shift the switch operator 30 along the frame plate 12
a switch operator coupled to said movable contact, said
operator being shiftable along a ?rst path to carry said
contacts into and out of engagement and along a second
path toward and away from said frame member, means
for urging said operator both toward said frame mem
60 ber and toward one end of said ?rst path, said operator
so as to hold the switch contacts 24, 25 out of engage
>ment. In this position, the control member is moved
and said frame member having inter-engaging portions
for latching said operator when the latter is urged against
sut?ciently far so that the ?nger 40 can enter the slot 41,
but the abutment 56 is wide enough to hold the operator
the frame member at the other end of said ?rst path,
clock controlled means for shifting said operator from
an abutment 56 which cooperates with a kink 57 formed
in the control wire 35. With the control member 59
rotated so that the abutment 56 underlies the kink '57,
the position shown in FIGS. ‘4 and 5, the wire 35 is moved
30 whether or not it is shifted or tilted from the frame
said frame member at a selected time so as to unlatch
plate 12 by'the axially movable hour gear 42. Thus, with
the abutment 56 underlying the kink 57 in the wire 35,
5the switch 11 will be held open and in this angular posi
the Operator, a control member movably mounted on
said frame member and having three alternate positions,
said control member carrying an abutment and a cam
each operable on said switch operator, said abutment
tion of the control member 50 the knob 55 points to the
70 ‘being located on said control member so that in one posi~
“OE” indicia shown in FIG. 1.
tion of the member the operator is held in said other
For shifting the switch operator 30 to manually close
end of the path by the abutment while the abutment
the switch 11 whether or not the operator is latched, the
does not affect the position of said operator in the other
control member 50 is provided with a cam 61 which,
member positions, said cam being located on said con
when the knob 55 is swung to the “On” position shown
in vFIG. 1, engages the spring wire 35 so ‘as to cam the 75 trol member so that in asecond position of said member
8,068,331
5
6
the cam shifts the operator from the frame member
and the cam does not affect the position of said operator
in the other member positions.
2. A clock controlled switch comprising, in combina
said operator from said frame member at a selected time
so as to unlatch the operator, a control member movably
mounted on said frame member and having three alter
nate positions, said control member carrying an abut
tion, a frame plate, a movable contact and a ?xed con
ment and a cam each operable on said switch operator,
tact each anchored relative to said frame plate, a ?oating
switch operator coupled to said movable contact, said
said abutment being located on said control member so
that in one position of the member the operator is held
in said other end of the path by the abutment while the
operator being slidable adjacent said plate along a ?rst
abutment does not affect the position of said operator
path to carry said contacts into and out of engagement,
said operator also being tiltable toward and away from 10 in the other member positions, said cam being located
on said control member so that in a second position of
said frame plate, means for urging said operator both
said member the cam shifts the operator from the frame
toward said frame plate and toward one end of said first
member and the cam does not affect the position of said
path, said operator and said frame plate having inter
operator in the other member positions.
engaging portions for latching said operator when the
4. A clock controlled switch comprising, in combina
latter is urged against the frame plate at the other end
of said ?rst path, clock controlled means for tilting said
ticn, a frame member, a movable contact and a ?xed
contact each anchored relative to said frame member, a
operator from said frame plate at a selected time so as
switch operator coupled to said movable contact, said
operator being shiftable along a ?rst path to carry said
control member carrying an abutment and a cam each 20 contacts into and out of engagement and along a second
path toward and away from said frame member, means
operable on said switch operator, said abutment being
for urging said operator both toward said frame member
located on said control member so that in one position
and toward one end of said ?rst path, said operator and
of the member the operator is- held in said other end of
said frame member having inter-engaging portions for
the path by the abutment while the abutment does not
latching said operator when the latter is urged against
affect the position of said operator in the other member
the frame member at the other end of said ?rst path,
positions, said cam being located on said control member
clock controlled means for shifting said operator from
so that in a second position of said member the cam
said frame member at a selected time so as to unlatch
tilts the operator from the frame plate and the cam does
the operator, a control member journaled on said frame
not affect the position of said operator in the other mem
to unlatch the operator, a control member journaled in
said frame plate and having three angular positions, said
ber positions.
3. A clock controlled switch comprising, in combina
tion, a frame member, a movable contact and a ?xed
contact each anchored relative to said frame member, a
?oating switch operator coupled to said movable con
tact, said operator being shiftable along a ?rst path to
carry said contacts into and out of engagement and along
a second path toward and away from said frame mem
ber, a spring wire anchored on said frame at one end and
30
member and having three angular positions, said control
member carrying an abutment and a cam operable on
said switch operator so that in one angular position the
operator is held at said other end of the path, in the
second angular position the cam shifts the operator from
said frame member and in the third angular position
neither the cam nor the abutment affects the position
of said operator, said ?rst position being between said
second position and said third position so that in moving
said control member to said third position the control
secured at the other end to said operator for urging
said operator both toward said frame member and to 40 member always moves through said ?rst position so as to
latch said operator.
ward one end of said ?rst path, said operator and said
frame member having inter-engaging portions for latch
References Cited in the ?le of this patent
ing said operator when the latter is urged against the
UNITED STATES PATENTS
frame member at the other end of said ?rst path, axially 45
shiftable cam wheels operated by said clock for shifting
2,782,274
Powers et a1. _________ __ Feb. 19, 1957
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