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Патент USA US3067307

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Dec. 4, 1962
D. ROSE
3,067,298
ELECTRICALLY OPERATED TIME SWITCH
Filed Feb. 23, 1960
2 Sheets-Sheet 1
/ll@
INVENTOR
DONA 1.0 I? 05E
BY @412 $197M”
ATTORNEY!’
Dec. 4, 1962
D. ROSE
3,067,298
ELECTRICALLY OPERATED TIME SWITCH
Filed Feb. 23, 1960
2 Sheets-Sheet 2
,
INVENTOR
DONALD ROSE
{ BY
92:12:;
ATTORNEYS’
United States Patent Q ice
ii?iilzdd
Patented Dec. 4:, 1962
2
1
out with the camming mechanism for the switch shown
l
sed position; and
3,067,298
ELECTRECALLY OPERATED Tit/1E @WH'EQ
‘Donald Rose, Dayton, Ohio, assignor to Water
~. 9 is a fragmentary view along lines 9-9 of
in”
showing the day of the week mechanism and its
cramming mechanism for the switch.
Throughout the description like reference numbers re
fer to similar parts.
The electric timer is generally indicated at 19 having
a housing ll of rectangular box-like shape moulded from
plastic material. Within this housing 11 is mounted the
mernanism shown in the exploded view in FIG. 3.
ggrnpany, hm, Middletown, @hio, a corporation 0
Filed Feb. 23, lii’tithser. No. 19,477
.
in
6 (Claims. {t1 2%»33)
This ‘invention is direct'edto improvements in an electric
. ‘timer and its actuation or switches.
It is an object of "the invention to provide electric mo
toridriven ltimedcam disks having vcut out sections there
The clock is a 24 hour clock as shown by the face
or dial 1?. which has the day time hours in the lighter
in which ‘align to permit a switch actuating ?nger to
swing therein.
Another object ‘of the invention is to provide electric
portion and the night time hours in the shaded portion.
An electric switch 13 of a conventional type is shown
in FIGURES 2, 7 and 8 as a micro-switch type having an
motor ‘driven timed cam disks having cut out sections
insulated mounting strip 14 by which screws 15 mount
therein, Bone "disk driven at one rotation per hour and
it to the housing 31'. A ?xed contact is at 16 while a
the other atone rotation perd'ay, the disk rotating once
movable contact 17 is mounted on an integral pair of
each day having a ‘lug ‘thereon to rotate once each day
Ia star wheel having movable pins thereon, the sectors 20 spaced apart, one above the other, arms 13 having an
integral leaf spring biasing means ‘19 disposed therebe
:in the disks aligning to permit swing movement of a
tween. A back stop is provided at 17:; for movable
switch actuating ?nger and ‘the star wheel pins when posi
15
tioned causing a third cam means to selectively release
contact 1'7.
the’ ?nger toswing in said cut out sectors.
A further ofb'ect‘oi the invention is to provide a motor
tact it‘? has an end portion
that joins the pair of
arms 18 and is slidably received over and pivoted to the
end of a ?nger lever 2i} and Zita. The ?nger lever 20
has a ‘bent intermediate portion 2% that is pivotally sup
ported in a slotted post 21. Post 21 is provided with a
second slot spaced below the one receiving lever 20 and
this second slot receives the end of spring portion 19.
Post 21 has a terminal portion 21a extending to the rear
driven ‘pair of adjacently mounted cam disks on a com
rnon axis, each cam’disk having a cut out section therein
‘that ‘may 2‘be brought into alignment with the other cut
out section of the other disk, one disk having a lug there
‘on for operating an escapement star wheel which per
mits a switch arm to swing into the aligned slots for a
set condition of the star wheel.
A ‘still further object of ‘the invention is to provide
in an electrically operated time switch a pair of cam
‘disks with valignable ‘cut .outs ‘therein to permit a switch
?nger to swing therein and .a motor drive for rotating
one'dis'k'once ‘per hour and the other disk once per day,
the disk rotatable once per day having a time of day
'dial relatively rotatable there against ‘for setting the time
The opposite end of a lever
from con
and through insulation mounting strip 14. Contact 16
has a similar terminal 165: and it is to these terminals
that circuit leads are further connected which circuits
are controlled by the electric timers. A movement of the
?nger
counter clockwise as shown in FIG. 8 permits
the movable contact 17 to close on the ?xed contact
‘to. Two or three of these switches 13 may be mounted
vertically above each other as shown by the mountings
'of day the switch is to be actuated and a knob means on Alt) in PEG. 9 where the ?ngers 2st) protrude through verti
cally spaced apart slots 24a in a partition 24 which is
‘the day disk for setting “the time of day dial to the par
‘speci?c example is given ‘by way of illustration only and,
a part of the housing ii.
A portion of the travel of the ?nger Ed is controlled by a
bell-crank lever 22 shown best in FIG. 3. Lever 22 has
a pair of spaced vertically apart arms 22a which are aper
tured at 221; to receive a mounting post 23 that mounts
them to slotted partition 24 of insulation material, see
while indicating preferred embodiment of the invention,
FIG. 9.
is not given by way of limitation, since various changes
and modi?cations within the spirit and scope of the in
vention will become apparent to those skilled in the art
rear ends by a vertical cam member 220 which acts as the
ticular time of day.
_'Still ‘further vobjects and the entire scope of applica
bility of the present invention will become apparent from
the ‘detailed description given hereinafter. it should be
understood, however, that the detailed description and the
‘from this detailed description.
‘FIG. 1 is a front elevational view of the time switch
The arms 22a are connected together at their
portion of the bell crank lever 22 that acts on the inter
mediate portion of the ?ngers 29 to permit them to move
a preliminary amount in their actuating travel movement.
The bell-crank lever 22 is biased in the clockwise direc
with ‘top cover lifted;
tion as shown by a tension spring 23a secured to arm 22a
gram mechanism;
generally indicated at 25 and the vertically movable pins
"F182 is a top plan view of the time switch with the 55 at one end and to the housing 11 at its other end. The
calender pin wheel or day of the week program wheel is
top ‘cover ‘broken away to show the day of the week pro
FIG. .3 is an exploded view of the drive motor, cam
ming and setting jm'echanism;
‘FIG. 4is an elevational view of the day of the week
program mechanism, along line 4-4 of FIG. 3 on an
enlarged scale;
FIG. '5 is a rear elevational view on an enlarged scale
of the cammingassembly ands-its drive without the elec
tric motor;
I
_
‘
‘
FIG. 6.is a top .plan view of FIG. 5 of the camming
assembly and its'drive with the electric motor attached;
26 therein, one for each day of the week, act on arm
22d to rotate the arm 22d counter-clockwise as shown in
PEG. 7 wherein the bar or arm 22c strikes the intermediate
portion of ?nger 22 and does not let it ‘fully move as
shown in FIG. -8. The pin wheel ~25 is mounted on top
of the partition member 24, see FIG. 9, by a vertically
extending pin 27 on which it is held by a snap ring 27a.
The control of the balance or ?nal movement of the
?ngers it) to ‘the counterclockwise position, see FIG. 8,
is by means or" a ?rst disk-like cam member 2S and a sec
ond disk-like cam member 29.
“FIG. 77 is a top plan view on an enlarged scale of a
Cam 23 is connected on a short hollow shaft 30
time switch with the day of week and camming ‘mecha
70 mounted in frame work 31 and having a gear 32 which is
'ni-s-m for the switch shown in open position;
driven by a gear 33‘ on the motor mechanism generally
‘FIG. 8 is a top plan view similar to that of H6. 7
3,067,298
3,
indicated at M. This cam disk 28 is rotated once each
hour. Cam disk 29 is mounted on a shaft 34 which ex
tends concentrically within hollow shaft 3t? and is sup
ported at its inner end in a bearing 35 mounted in the
frame work 31.
A drive gear 36 is attached to the inner
end of shaft 34 adjacent bearing 35 and within the frame
its front face at the center.
4.
The central shaft 34 extends
through this lug 29.2 and is internally drilled and threaded
to receive a securing screw 33, see FIGURES 1 and 3.
The lug 29s is formed with an off center slot 29f therein
in its face to ‘receive certain aligning pins 390 (not show
ing) in the regeneration indicator knob 39. The knob
work 31 and it is driven by a gear 37 on the motor mecha
39 may be a moulded member of plastic material and it
nism M. The cam disk 29 rotates once each 24 hours.
has a hollow radial lug portion 3%, termed a pointer in
Cam disk 29, the second cam disk, is formed with a cut
dicator window as it houses the pointer ridge 3911 therein.
out or slotted segment 29a extending from the periphery 10
The housing 11 shown in FIGURES 1 and 2 has a recess
to the central portion as indicated at 2979. Both of the
46} extending in from the face 11a and this recess joins
cam disks 2% and 29 and the day dial or dial face 12 re
with a small recess therebehind (not shown) which re
tate counter clockwise as shown in FIG. 3. The trailing
ceives therethrough from the front the motor M that pro
edge, camming edge of the slot 29a as indicated 29c, is
trudes within the housing to the rear portion thereof and
on a particular slant so that the outer portions of the
to the rear of the smaller recess that receives the frame
?ngers 20 as act thereon will actuate at different lagging
work 31. The front recess 40 receives the cam disks 28
‘times since the ?ngers ‘are mounted vertically in line and
the camming edge 290 is at a particularly selected angle,
and 29, see FIG. 3, the spring 42 over lug 292, the dial
face 12 whose center 12a is also received over the lug 29a
not necessarily a radial line of the cam disk. The lower
and the knob 39 which is secured on the lug 29s by the
?nger 20, shown in FIG. 9, will be the ?rst to move in the 20 screw 39. The front 11a has a protruding annular rim
clockwise direction shown in FIGURES 7 and 8. ‘Cam
11b with a time of day pointer 45 at the top.
disk 29 is also formed with a radial extending lug 29d
In FIGURES 1 and 2, the housing 11 is shown to have
which is in line to strike behind and rotate one step one
a recess 43 that receives atop 44.
of the seven protruding ‘lugs 25a of the pin wheel 25.
When this stepping of the wheel 25 takes place once each
day one of the paths of the pins 26, which is two pins
back counter clockwise, strikes if the pin is pushed down
nected therewith a further cavity 46 within which is re
The recess 44 has con
This
ceived the ?tting member 24.
Setting the Timer
This timer is particularly useful for operating a water
rotation counter clockwise of arm 22d is shown in FIG. 7
and the actuating portion 220 acts on the intermediate
softener system for a period during a selected day or days
of a week. It may equally as well be adapted and ar
portion of ?ngers 2% to prevent its rotation counter clock
wise. If a pin 26 is pulled up the converse is true and
poses.
the arm 22d and rotates the arm counter clockwise.
the arm 22d is permitted to rotate counter-clockwise un
der the in?uence of spring 23a to the position shown in
FIG. 8 if the ?rst cam disk 28 is in the proper position.
It will be observed in FIG. 9 that the arm 22d is mounted
to move in a path under the pin wheel 25 and to strike a
pin 26 if it is pushed down to full down position. Suitable
springs are mounted in each aperture housing a pin to
hold it in selected position.
ranged to open and close electrical circuit for other pur
The hour of day that the timer is desired to work is se
lected. To set, depress face 12 slightly against spring 42
back from regeneration knob 39 and rotate until desired
time is showing in indicator window 39a at pointer 39b.
Next set the time of day by rotating knob 39 counter
clockwise and as this takes place the dial 12 also rotates
with knob 39. The knob 39 is rotated until the time of
day on the face or dial 12 appears under time of day
The structure and ‘action of the ?rst cam disk 23 will
now be described. It will be observed that a slot way
must be present in disk 28 to permit ?nger 20 to move
all the Way to cause contact 17 to close on ?xed contact
pointer 45.
such switches 13 are to be accommodated.
once each day. The preliminary positioning of the ?nger
In order to select the number of times per week that it
is desired that the switch work for the time of day or night
set, lift the top or lid 44 to expose the pin or star wheel
16. The disk 28 is best shown in FIG. 5. A segmented 45 25. Rotate the wheel 25 clockwise until present day of
week is in line with arrow 45. Lift each day pin 26 to
slot 28a is cut out of disk 28 and it has an inboard edge
highest position on days the timer is to operate. Each
or center hub edge 28b. The camming edges of the slot
of the pins 26 has the day of the week imprinted on its
28a are formed at 28c—1 and 28c~2 and there are slant
top. It is important that the day pins 26 be down for
edges one spaced arcuately and in somewhat radial rela
tionship to the other. The camming edges 28c—1 and 50 the days that the timer is not to operate or the days that
regeneration is not to take place if it is used with a water
28c-2 are formed so as to be in the paths of the respec
softener system.
tive ?ngers 20, see FIG. 9. Thus, as the disk 23 rotates
clockwise, as shown in FIG. 5, the ends of the ?ngers 20
Operation
ride on the planar surface of the disk 28 until they come
When the electric motor M is connected in to a power
to the respective camming edges 28c-1 and 230-2. It is 55
source through its power leads m1 and m2, the gear train
possible to cut out the slot 23a by moving the edge 28c
in the cage or frame 31 is motivated. The ?rst cam disk
inward toward the center and to form additional cam
28 rotates once per hour and the second cam disk rotates
ming edges such as 28c-1 and 230-2 if more than two
In the rotating action of the wheel 25 there is a spring 60 20 of each switch 13 is accomplished by cam disk 28 and
the end of ?nger 20 is released by the particular cam edge
?nger 25b anchored to the casing 11, see FIG. 2, that
28c-1 or 28c-2. If the particular day is present for the
acts as a stop by having its end portion 25b’ bent so’ as to
switch to operate, then the second cam disk 29 will be in
abut behind the ?nger or lugs 25a on the wheel to prevent
position with its lug 29d tripping the star wheel 25 from
‘reverse rotation of the wheel.
The frame 31 as shown in FIG. 5 does not have in this 65 position in FIG. 7 to the position in FIG. 8. At this time
the slot 29a of cam disk 29 will be in position and in line
?gure the motor M mounted thereon. The slot 31::
with slot 28:: of disk 28 and arm 22c will have moved as
therein leading to an edge is to receive the gear shaft 33a
shown in FIG. 8 so that ?nger 20 may drop through both
that mounts gears 33 and 37 as shown in FIG. 6. The
slots 28a and 29a and switch 13 will be actuated.
corner parts of the frame 31 at 31b are internally threaded
As the clock continues to run, the cam disks will rotate
to receive mounting screws which hold the frame in the 70
and the cam disk 28 with its camming rear edge 28d
housing 11. The apertures 31b in the frame 31 are
threaded and serve to receive screws 310 that mount the
lifting the end of ?nger 20 and tripping the switch 13 to
motor mechanism M.
open its contacts in a micro-switch movement fashion.
In the construction of the second cam disk 29, there is
Very accurate and reliable timing and control of switch
formed thereon a protruding lug 29c which projects from 75 action is obtainable. The arcuate spacing between cam
3,067,298
5
edges Z?c~1 and 2&4 provides the timing difference be
tween the actuation to closed position of the two switches
shown. As to opening of the switches this takes place in
spaced time relation wherein the cam edges 28d lift the
?ngers out of slot 29a and cause them to close the con
tacts. Since the ?ngers 20 of the switches 13‘ are ar
ranged in a vertical plane and since the cam edge 28d is
on a slant to the vertical as it sweeps around in the rotary
action of cam disk 28, the lowermost ?nger will be lifter
ahead of the next upper ?nger. Thus it is seen that the
timer may have set up different time lags in the actuation
to open and closed position of the switches 13 by chang
ing the direction of slant of the edges 28c-1, 1280-2, 280?,
29c and ‘29d and in the case of the edges 280-1 and 28c-2
the arcuate spacing therebetween. Other variations may
also be made as separate cam edges may be provided at
28d and 29d.
I claim as my invention:
1. An electric timer for opening and closing a switch
having an actuating ?nger for closing the switch when 20
swung in one direction and opening the switch when swung
in the reverse direction comprising, in combination, with
said switch and its actuating ?nger, a ?rst cam disk for
engagement of said ?nger and having a segment camming
slot cut out therein, permitting said ?nger to swing into
6
having a ?at face and positioned with respect to said ?nger
for engagement by said ?nger on the ?at face thereof
and having a segmental camming slot cut out extending
therethrough permitting said ?nger to swing into the slot
when the disk is rotated thereby, a second cam disk hav
ing a ?at face and positioned adjacent said ?rst cam disk
and said ?nger for engagement of the ?nger with the flat
face thereof and having a segmental camming slot there
in brought into alignment with the ?rst mentioned slot
when the second cam disk is rotated, said second men
tioned slot
permitting said ?nger to (further swing in
the slots, said ?rst cam disk when rotated rotating its carn
ming slot to aposition where an edge of the slot contacts
said ?nger and swings it in the reverse direction, said sec
ond cam disk when rotated so said slots are not aligned
preventing said ?nger from completing its swing in said
one direction and means for rotating said ?rst cam disk
once per hour and means for rotating said second cam
disk once per day.
4. An electric timer for opening and closing a switch
having ?nger means closing a circuit when swung in one
direction and opening a circuit when swung in the reverse
direction comprising, in combination, with said switch and
its ?nger means, a ?rst cam disk having a ?at face and
the slot when the disk is rotated thereby, a second cam
disk adjacent said ?rst cam disk and having a segmental
positioned with respect to said ?nger means for engage
ment by said ?nger means on the flat face thereof and
having a segmental camming slot cut out extending there
camming slot therein brought into alignment with the
through permitting said ?nger means to swing into the
?rst mentioned slot when the second cam disk is rotated,
slot when the disk is rotated thereby, a second cam disk
said second mentioned slot also permitting said ?nger to
having a ?at face and positioned adjacent said ?rst cam
disk and said ?nger means for engagement of the ?nger
means with the flat face thereof and having a segmental
further swing in the slots, said ?rst cam disk when ro
tated rotating its camming slot to a position where an
edge of the slot contacts said ?nger and swings it in the
camming slot therein brought into alignment with the
?rst mentioned slot when the second cam disk is rotated,
said slots are not aligned preventing said ?nger from 35 said second mentioned slot also permitting said ?nger
means to further swing in the slots, said ?rst cam disk
completing its swing in said one direction, means for ro
when rotated rotating its camming slot to a position where
tating said ?rst cam disk once per hour and means for ro~
an edge of the slot contacts said ?nger and swings it in the
tating said second cam disk once per day, said second
reverse direction, said second cam disk when rotated so
cam disk having a lug extending from the periphery
said slots are out of alignment preventing said ?nger means
thereof, a star wheel having adjustably positioned pin
from completing its swing in said one direction and means
means representing each day of the week, said star wheel
for rotating said ?rst cam disk once per hour and means
being associated with said second cam disk and the lug
for rotating said second cam disk once per day.
thereon for rotation one step by contact of said lug on
5. An electric timer for opening and closing a switch
each rotation of the second cam disk, said pin means be
reverse direction, said second cam disk when rotated so
ing movable to an operative and an inoperative position, a 45 having ?nger means closing a circuit when swung in one
direction and opening a circuit when swung in the re_
third cam means for the ?nger of said switch, said third
verse direction comprising, in combination, with said
cam means having contact with said ?nger in one position
switch and its ?nger means, a ?rst cam disk for engage
to prevent swing of said ?nger from within said slot of the
ment by said ?nger means and having a segmental cam
?rst cam disk to said slot in the second cam disk, said third
cam means having a ?nger thereon positioned for con 50 ming slot cut out therein permitting said ?nger means to
swing into the slot when the disk is rotated thereby, a sec
tact by the pin means on said star wheel when set to con
ond cam disk adjacent said ?rst cam disk and having a
tact the third cam ?nger whereby said pin means selective
segmental camming slot therein brought into alignment
ly releases said ?nger on the third cam means and said
with the ?rst mentioned slot when the second cam disk
third cam means releases said ?nger on the switch for
is rotated, said second mentioned slot also permitting said
swing into said slot in the second cam disk.
?nger means to further swing in the slots, said ?rst cam
2. An electric timer for opening and closing a switch
according to claim 1 wherein said means for rotating said
cam disks is an electric motor having geared drives for
each cam disk and including a housing means mounting
disk when rotated rotating its camming slot to a position
where an edge of the slot contacts said ?nger and swings it
in the reverse direction, said second cam disk when ro
said timer mechanism and having a reference point there 60 tated so said slots are out of alignment preventing said
?nger means from completing its swing in said one direc
on, said second cam disk having an axially disposed lug
projecting therefrom, a time of day dial plate frictionally
received over said axial projecting lug, a knob attachable
to said axial lug to rotate therewith and having a reference
tion and means for rotating said ?rst cam disk once per
hour and means for rotating said second cam disk once
per day, said second cam disk having a lug projecting
point thereon whereby the time of day dial may be rotated 65 therefrom, a star wheel having adjustably positioned pin
with respect to the axial lug to set the time of day for
means representing each day of the week, said star wheel
switch actuation adjacent said reference point on the
being associated with said second cam disk and the lug
knob, said cam disks and said dial therewith to set the
thereon for rotation one step by contact of the star wheel
actual time of day on said dial adjacent said reference
with said lug on each rotation of the second cam disk,
point on said housing.
70 said pin means being movable to an operative and an
3. An electric timer for opening and closing a switch
inoperative position, a third cam means for the ?nger
having an actuating ?nger for closing the switch when
means, said third cam means having contact with said
v?nger in one position to prevent swing of said ?nger from
swung in one direction and opening the switch when
within said slot of the ?rst cam disk to said slot in the
swung in the reverse direction comprising, in combination,
with said switch and its actuating ?nger, a ?rst cam disk 75 second cam disk, said third cam means having a lever
8,067,298
7
arm thereon positioned for contact by the pin means on
said star wheel when set to contact said lever arm to
rotate said third cam means whereby said pin means se
lectively releases said lever on the third cam means and
said third cam means releases said ?nger means of the
switch for swing into said slot in the second cam diskv
O
0
received over said axial projecting lug, a knob attachable
to said axial lug to rotate therewith and having a reference
point thereon whereby the time of day dial may be rotated
with respect to the axial lug to set the time of day for
switch actuation adjacent said reference point on the knob,
said knob being rotatable to rotate said cam disks and
‘6. An electric timer for opening and closing a switch
said dial therewith to set the actual time of day on said
according to claim 5 wherein said means for rotating said
dial adjacent said reference point on said housing.
cam disks is an electric motor having geared drives for
each cam disk and including a housing means mounting 10
References (Jilted in the ?le of this patent
said timer mechanism and having a reference point there
UNITED STATES PATENTS
on, said second cam disk having an axially disposed lug
projecting therefrom, a time of day dial plate frictionally
2,424,116
Puerner ______________ __ July 15, 1947
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