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Патент USA US2122017

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June 2-8, 1938.
F. l. WILLIAMS
2,122,017
CONTROL APPARATUS
Filed March 19, 1931
2 Sheets-Sheet l
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June
F_ I‘ WILLIAMS‘
2,122,017
CONTROL APPARATU S‘
Filed March 19, 1931
2 Sheets-Sheet 2
71419 @702 vzeys -
2,122,017
Patented June 28, 1938
UNITED STATES PATENT OFFICE
2,122,017
CONTROL APPARATUS
Frank I. Williams, Hyde Park, Mass, assignor to
American Tool and Machine Company, Hyde
Park, Mass, a corporation of Massachusetts
Application March 19, 1931, Serial No. 523,765
10 Claims. (Cl. 200-35)
This invention pertains to control apparatus
and relates more especially to apparatus of the
type in which a clock mechanism controls the
operation of two or more electrical switches, the
5 principal object of the invention being to pro
vide apparatus of this general type which is of
simple and practical construction and which
comprises a single manually movable part which
is effective to predetermine the respective times
10 at which such switches shall be actuated. One
suggested utility for such control apparatus is
in the automatic control of a centrifugal ex
tractor.
Other and further objects, advantages and
15 utilities of the invention will be made manifest
in the following more detailed description and
by reference to the accompanying drawings in
which:
Fig. 1 is a front elevation to small scale of a
20 timer mechanism embodying certain features of
the invention;
Fig. la is a fragmentary front elevation to
larger scale showing certain details of the timer
mechanism;
m in
Fig. 2 is a rear elevation of the timer mecha
nism of Fig. 1 but to larger scale and with the
back member removed;
Fig. 3 is a vertical section on the line 3-—3 of
Fig. 2;
30
Fig. 4 is a diagram illustrating one desirable
arrangement of electrical connections embodied
in the control apparatus; and
Figs. 5, 6, 7 and 8 are diagrammatic views
illustrating the relation between the indicating
devices of the timing mechanism and the
switches controlled thereby.
Referring to the drawings, the numeral l
designates the casing of the timing mechanism,
said casing being supported upon a base 2 and
40 having the front wall 3 (Fig. 3) and the remov
able rear wall 4. The front wall is provided with
. a glazed opening 5 which receives the dial 6,
suitably graduated, for example, to indicate
minutes, and having an opening at its center
45 through which projects the staff or spindle ‘I.
A knob or handle 8 is secured to the forward
end of this staff and provides means whereby
the staff may be turned manually, the staff con
stituting means for winding the spring of the
clock mechanism of the timer, thereby to start
its operation, and also actuating certain switch
contacts as hereafter described. The staff also
carries a sleeve 9 (Fig. 1a) which is connected at
its rear end to certain parts of the timing mech—
55 anism and which may be turned independently
of the staff. In front of the ‘dial are mounted
the indicator levers l0 and H upon the staff 1
and the sleeve 9, respectively, having the index
pointers I091 and Ila. The index lever I0 is
hereafter referred to as the main indicator or
lever, and the lever II as the auxiliary indicator
or lever. The auxiliary lever II is provided with
a segmental member I2 (Fig. 1*‘) which under
lies the end of the lever Ill, and this segment II
is provided at its opposite ends with forwardly
projecting ears l3 and 14 preferably furnished
with screw threaded openings for reception of
the adjustable abutment elements l5 and [6 re
spectively. These ears l3 and I4 and/or the
stop elements 15 and iii, if the latter are em 15
ployed, constitute abutments for limiting the
relative movement of the levers l0 and H.
The clock mechanism of the timer is contained
in a case I‘! (Fig. 2) secured to the back of the
wall 3 of the casing, and this clock mechanism
should be of any suitable type comprising for
example a spring or other power storing device
which is energized by turning the staff 7, such
clock mechanism comprising usual escapement
mechanism or governing means which determines -.
the rate at which it shall run, it being under
stood that when the staff 7 is turned, for example
to the right, the spring is thereby energized, and
when the handle 8 is released the spring im
mediately starts to return the staff ‘I and the 30
sleeve to their initial positions at a predeter
mined speed. Since such clock mechanisms are
well known in the art as illustrated for example
in Patents Nos. 1,395,098, 1,493,771, and 1,705,458,
it is unnecessary to describe the mechanism of 35
this timer in further detail.
Preferably within the casing l, I provide a
signal bell l8 and also two signal elements such
as electric lamps I9 and 20 disposed behind open
ings 2| and 22 in the front wall 3 of the casing. 40
Such openings are preferably provided with
colored bull’s-eyes 23 and 24 respectively, one of
said bull’s-eyes being red for example, and the
other of some other color, for example green. or
if preferred, uncolored so as to transmit white 45
light.
The casing l is preferably furnished with
a socket 25 for the reception of the end of a con
ductor cable 26 and with a second socket 27
adapted to receive a plug in the end of a cord 29
having a plug 28 which may be plugged into a 50
suitable socket to provide electric current for
actuating the lamps I9 and 20, the signal bell I8,
and a solenoid 45 hereafter described.
The operation of the apparatus is substantially
as follows, it being assumed that the indicator 55
2
2,122,017
levers l0 and II are substantially in the position
indicated in Fig. 5. The operator grasps the
handle or knob 8 of the timer device and turns
it to the right, as viewed in Figs. 1 and 5. Since
in the initial position an abutment member M
(or IE) is spaced from the main indicator lever
in, the pointer [0a is permitted to move to the
right of the pointer lla before it engages the
dicators from advanced position back to initial
position, interconnected electric circuits includ
ing a plurality of switches, and connections be‘
tween said switches and indicators constructed
and arranged to operate the switches successively U!
during the advance movement of the indicators
and during the return movement again to operate
the switches successively in reverse direction.
2. Control apparatus of the class described
comprising a main indicator manually movable
from an initial position to an advanced position,
abutment M the indicator lever i I is then pushed‘ ' a second indicator having a portion movable
forwardly with the indicator lever Ill and as the along substantially the same path of travel as
15 pointer l Ia passes the zero of the scale the switch
the main indicator, spaced abutments on the
main indicator disposed on opposite sides of said 15
51 is closed, preferably momentarily. As the in
dicator lever II is moved as described the switch portion of the second indicator and operative to
58 is also closed, thus closing a signal circuit limit the movements of the second indicator in
beginning at the plug 28 and including the switch both directions relative to the main indicator,
drive means for moving one of the indicators
58, the white (or green) signal lamp 20 and lead
ing back to the plug 28. The white signal lamp from advanced position back to initial position, a 20
is thus caused to burn. The switch 56 has al~ plurality of electric switches, and connections be~
ready been opened as described and the signal [9 tween said switches and indicators constructed
and arranged to operate the switches during ad
and the bell l8 remain inactive.
25
vance movement of said indicators and reversely
The operator may now move the handle as
much farther to the right as is necessary to set operate said switches during return movement
the index pointers Illa and HL1 to the desired of said indicators.
3. Control apparatus of the class described
period of operation. If it be desired to have the
stop signals l8 and l 9 operate for a certain period, comprising a main indicator manually movable
30
the handle is now turned to the left to carry the from an initial position to an advanced position,
a second indicator having a portion movable 30
pointer l0a to the left of pointer I la, such move
along substantially the same path of travel as
ment being limited for convenience by the abut
the main indicator, spaced abutments on the
ment l3. The apparatus now continues to op
erate the indicators l0 and II slowly moving back main indicator disposed on opposite sides of said
portion of the second indicator and operative to
toward initial position. At the end of the pre
determined period the index ID" will have re— limit the movements of the second indicator in I
turned to zero and at substantially this time the both directions relative to the main indicator,
switch 55 is opened. (It is to be noted that the automatic means for returning both of said in
switch 57 is at this time open having been closed dicators back to initial position, a pair of electric
40 only momentarily). At substantially the same
switches, and connections between said switches
time the switch 55 is opened the switch 56 is and indicators constructed and arranged to close
closed. As the indicator lever I0 reaches the said switches successively during advance move
ment of said indicators and to open said switches
zero point before the indicator lever H has re
turned to its initial position (providing the parts successively during return movement of said in
dicators.
have been set as above described), the latter con
4. Control apparatus of the class described
tinues to move. As the index lla nears the zero
position the switch 51 is momentarily closed but comprising’ a pair of indicators manually movable
without effect since the circuit has been broken from initial position to an advanced position, one
at the switch 55 and as the index I la reaches the of said indicators having spaced abutments dis
posed on opposite sides of the other of said in
50 zero position the switch 53 is opened, breaking the
dicators operative to limit the movements of the
circuit through all of the signals. Thus by vary
ing the distance between the abutments l5 and latter in both directions relative to the former,
I6 the period that the stop signals will operate drive means for returning said indicators from
may be varied, it being noted that these signals an advanced position back to initial position, a
55 automatically stop after a predetermined time so plurality of double acting electric switches, and
connections between said switches and indicators
that waste of current is avoided.
constructed and arranged to operate said switches
While I have herein disclosed a desirable em
bodiment of the invention, it is to be understood successively in one direction during advance
that various changes in detail of construction movement of said indicators and to operate said
60 and speci?c arrangement of parts and the sub
switches successively in reverse direction during
stitution of equivalents may be made without de» return movement of said indicators.
5. Control apparatus of the class described
parting from the spirit of the invention, and
while the control apparatus as here shown is of comprising a main indicator, a second indicator,
the main indicator having spaced lugs disposed
utility in connection with the centrifugal ex
tractor it is not necessarily limited to such use. on opposite sides of the second indicator operative
I claim:
to limit the movement of said indicators in both
1. Control apparatus of the class described directions relative to each other to a predeter
comprising a pair of indicators manually movable mined range, a handle for manually moving one
from initial position to an advanced position, one of the indicators in either direction thereby to
70 of said indicators having spaced abutments on move the other indicator to a selected set posi
opposite sides of the other indicator and disposed tion after a predetermined movement of the first 70
in the path of movement of the other of said indicator, the latter thereafter being movable
indicators and operative to limit its movements relative to the other indicator within a predeter
in both directions relative to the ?rst indicator, mined range in the reverse direction, an electric
switch control member actuable in response to
75. means for automatically moving one of said in
movement of each indicator, and means for mov 75
abutment of the lever H. As the pointer l0a
passes the zero point of the scale the switch 55'is
opened, and at the same time controlling switch
55 is closed. When the indicator l0 strikes the
3
2,122,017
ing said indicators back to their initial position
at a predetermined rate of speed.
6. Control apparatus of the class described
bers disposed on opposite sides of the auxiliary
indicator, one of said abutment members being
engageable with said auxiliary indicator after the
comprising a main indicator, a second indicator,
the main indicator having spaced lugs disposed
on opposite sides of the second indicator oper
ative to limit the movement of said indicators
in both directions relative to each other to a
predetermined range, a handle for manually mov
10 ing one of the indicators in either direction there
by to move the other indicator to a selected set
position after a predetermined movement of the
?rst indicator, the latter thereafter being mov
able relative to the other indicator within a pre
15 determined range in the reverse direction, means
for moving said indicators back to their initial
position at a predetermined rate of speed, inter
connected electric circuits including a pair of
switches, and connections between said switches
and indicators operative successively to close cer
tain of said switches during advance movement
of said indicators and during reverse movement to
open the ?rst closed switch after a predetermined
period of time and then the last closed switch
25 at a predetermined later time.
7. Control apparatus of the class described
comprising a main indicator, a second indicator,
the main indicator having spaced lugs disposed on
opposite sides of the second indicator operative to
30 limit the movement of said indicators in both
directions relative to each other to a predeter
mined range, a handle for manually moving one
of the indicators in either direction thereby to
move the other indicator to a selected set posi—
35 tion after a predetermined movement of the ?rst
indicator, the latter thereafter being movable
relative to the other indicator within a predeter
mined range in the reverse direction, means for
moving said indicators back to their initial po
40 sitions at a predetermined rate of speed, inter
connected electric circuits including a plurality
of switches, and connections between said
switches and indicators constructed and arranged
to close certain of said switches and open others
45 during advance movement of said indicators and
during reverse movement to open the closed
switches and close the open switches, thereby to
produce coordinated effects in said circuits.
8. Control apparatus comprising a main indi
cator manually movable from an initial position
50
to an advanced position, an auxiliary indicator,
the main indicator having spaced abutment mem
main indicator has been advanced a predeter
mined distance from its initial position, thereby
to advance said auxiliary indicator in response to
further advance movement of said main indi
cator, the other of said abutment members being
engageable with said auxiliary indicator after the
main indicator has returned a predetermined dis
tance from its advanced position, thereby to re
turn said auxiliary indicator in response to fur
10
ther return movement of said main indicator,
means for automatically moving said main indi
cator back to initial position at a predetermined
rate of speed, and electrical switches having parts
constructed and arranged to operate the switches
successively during the advance movement of each
indicator and which again operate the switches in
succession during the return movement of said
indicators.
9. Controlling apparatus comprising switches, a
clock mechanism, a main indicator for deter
mining the time of operation of one switch, an
auxiliary indicator for determining the time of
operation of another switch, the main indicator
being movable to either side of the auxiliary in
dicator, lugs projecting from the auxiliary indi
cator into the path of the main indicator for
limiting relative movement of the indicators, the 30
movement of the main indicator in a predeter
mined direction starting the clock mechanism into
action, setting the clock mechanism for a pre
determined period of operation and closing a
switch, said movement also moving the auxiliary
indicator thereby to close another switch, the
clock mechanism being constructed and arranged
upon release of the main indicator to begin a slow
return movement of both indicators toward nor
mal position.
40
10. Control apparatus of the class described,
comprising a plurality of electrical switches, an
actuating element for each switch, a single con
trol member for moving said actuating elements
in a given direction for ?rst operating one of said 45
switches and then another, and automatic means
for moving said actuating elements in the reverse
direction whereby to operate the ?rst actuated
switch after a predetermined period of time and
to operate the last actuated switch at a prede 50
termined later time.
FRANK I. WILLIAMS.
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