U.S. patent number 3,665,165 [Application Number 05/060,506] was granted by the patent office on 1972-05-23 for time accumulator for accumulating workers' time on the job.
This patent grant is currently assigned to Strandberg Engineering Laboratories, Inc.. Invention is credited to Jerry M. Kennon, Charles F. Strandberg, Jr., Robert C. Strandberg.
United States Patent |
3,665,165 |
Strandberg, Jr. , et
al. |
May 23, 1972 |
TIME ACCUMULATOR FOR ACCUMULATING WORKERS' TIME ON THE JOB
Abstract
An apparatus for accumulating the time spent by individual
workers on a job comprising a source of periodic electric timing
pulses and worker assigned time accumulator units connected in
circuit with the source of periodic timing pulses. Each of the time
accumulator units includes an electrical counter for counting the
periodic timing pulses and a normally closed switch requiring a
separable actuator to open the switch. A worker when not on a job
will insert a worker assigned separable actuating device in the
normally closed switch to open the switch and stop the counter from
counting the periodic timing pulses. When the worker goes on a job,
the separable actuator is removed from the normally closed switch
to permit the switch to close and the counter to resume counting
the periodic timing pulses while the worker is on the job. Plural
time accumulator units may be connected in parallel circuits to
receive the electric pulses from the source of periodic electric
timing pulses in accordance with the requirements for workers on a
job, there being one time accumulator unit for each worker on the
job within the capabilities of the apparatus. The apparatus
includes a box-like housing having a display panel, the front face
of which has a plurality of similar display areas, each display
area having a workers's identification, an indicator for the
worker's accumulated time on a job and an aperture through which
the worker inserts a separable actuator to open the normally closed
switch located behind the display panel of the particular worker's
time accumulator unit.
Inventors: |
Strandberg, Jr.; Charles F.
(Greensboro, NC), Strandberg; Robert C. (Greensboro, NC),
Kennon; Jerry M. (Greensboro, NC) |
Assignee: |
Strandberg Engineering
Laboratories, Inc. (Greensboro, NC)
|
Family
ID: |
22029930 |
Appl.
No.: |
05/060,506 |
Filed: |
August 3, 1970 |
Current U.S.
Class: |
377/13; 377/20;
346/20; 377/38 |
Current CPC
Class: |
G07C
1/06 (20130101); G01D 1/18 (20130101) |
Current International
Class: |
G01D
1/18 (20060101); G01D 1/00 (20060101); G07C
1/06 (20060101); G07C 1/00 (20060101); G07c
003/10 () |
Field of
Search: |
;235/92T,92PD,92FP,61.6R
;58/23,25 ;346/20 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Wilbur; Maynard R.
Assistant Examiner: Thesz, Jr.; Joseph M.
Claims
What is claimed is:
1. Apparatus for accumulating the time a worker is on a job
comprising (a) an electric power source, (b) means for producing a
periodic electric timing pulse representative of a predetermined
increment of time, (c) an electrical counter means in circuit with
said periodic pulse producing means for counting said periodic
pulses, (d) normally closed switch means in circuit with said
periodic pulse producing means and said counter means for
connecting and disconnecting said periodic pulse producing means
and said counter to said electric power source, said normally
closed switch means requiring a separable actuating device to open
said switch and (e) a worker assigned separable actuating device
which is normally applied by the worker to open said normally
closed switch means when the worker stops working, and is withdrawn
by the worker from said normally closed switch means when the
worker goes on a job to permit said normally closed switch means to
close and said counter to count the periodic pulses produced by
said periodic pulse producing means during the time said separable
actuating device is withdrawn.
2. The apparatus set forth in claim 1 together with an electric
indicator means connected in circuit with said power source and
said normally closed switch to be energized when said normally
closed switch is closed and said counter is counting for indicating
when a worker is on the job.
3. The apparatus set forth in claim 1 wherein said periodic timing
pulse producing means comprises a periodic switch, and motor
actuated means for opening and closing said periodic switch in a
continuous manner.
4. The apparatus set forth in claim 1 wherein there are plural
electrically actuated counters and plural normally closed switch
means, there being one counter and one normally closed switch means
in multiple parallel branches and each of said branches being
serially connected with said periodic timing pulse producing means
and said electric power source.
5. The apparatus set forth in claim 4 wherein there are plural
electric indicator means for indicating which workers are on the
job there being at least one indicator means for each normally
closed switch means.
6. The apparatus set forth in claim 4 together with a box-like
housing having one wall which is a display panel with front and
rear faces, the front face of said display panel comprising a
plurality of similar display areas within the confines of said
display face, and there being mounted behind each display area
within said housing, one of said plurality of counters, and one of
said normally closed switches, each display area having means for
viewing the counter mounted behind said display area and access
means within the display area extending through said display panel
for receiving said separable actuating device for opening said
normally closed switch.
7. The apparatus set forth in claim 6 wherein there are plural
electric indicator means corresponding in number to the number of
said display areas, there being one electric-indicator means
mounted within each of said display areas, each of said indicator
means being connected in circuit with said power source and with
the normally closed switch behind a corresponding display area to
be energized when the normally closed switch behind a corresponding
display area is closed for indicating when a worker assigned
separable actuator for said corresponding normally closed switch is
withdrawn and said worker is presumed to be on the job.
8. The apparatus set forth in claim 7 together with a plurality of
remote electrical indicator means which are located remotely from
said housing there being at least one remote indicator for each of
the electrical indicator means mounted in said housing, for
presenting a remote indication corresponding with the indication of
a particular indicator means in said housing.
9. The apparatus set forth in claim 1 wherein said normally closed
switch means includes a receptacle for receiving said worker
assigned separable actuating device, and means positioned within
the receptacle for engaging said separable actuating device for
opening said normally closed switch when said separable actuating
device is inserted into said receptacle.
10. The apparatus set forth in claim 9 wherein the receptacle of
said normally closed switch includes means for grounding said
separable actuating device.
11. Apparatus for accumulating the time a worker is on a job
comprising (a) an electric power source, (b) means for producing a
periodic electric timing pulse representative of a predetermined
increment of time, (c) an electrical counter means in circuit with
said periodic pulse producing means for counting said periodic
pulses, (d) normally closed switch means in circuit with said
periodic pulse producing means and said counter means for
connecting and disconnecting said periodic pulse producing means
and said counter to said electric power source, said normally
closed switch means requiring a separable actuating device to open
said switch and (e) a worker assigned separable actuating device
which is normally applied by the worker to open said normally
closed switch means when the worker stops working, and is withdrawn
by the worker from said normally closed switch means when the
worker goes on a job to permit said normally closed switch means to
close and said counter to count the periodic pulses produced by
said periodic pulse producing means during the time said separable
actuating device is withdrawn, said normally closed switch means
including a receptacle for receiving said worker assigned separable
actuating device, and means positioned within the receptacle for
engaging said separable actuating device for opening said normally
closed switch when said separable actuating device is inserted into
said receptacle, said separable actuating device being a phone-type
plug including a handle portion and a shank projecting from said
handle portion, and said receptacle having a complementally shaped
opening for receiving said shank, said shank having a body portion
and a tip end portion and an annular groove adjacent said tip end
portion, and means positioned within said receptacle for engaging
said separable actuating device having a resiliently biased
projection for engaging said groove and frictionally holding said
separable actuating device in said receptacle.
12. Apparatus for accumulating the time a worker is on a job
comprising (a) an electric power source, (b) means for producing a
periodic electric timing pulse representative of a predetermined
increment of time, (c) an electrical counter means in circuit with
said periodic pulse producing means for counting said periodic
pulses, (d) normally closed switch means in circuit with said
periodic pulse producing means and said counter means for
connecting and disconnecting said periodic pulse producing means
and said counter to said electric power source, said normally
closed switch means requiring a separable actuating device to open
said switch and (e) a worker assigned separable actuating device
which is normally applied by the worker to open said normally
closed switch means when the worker stops working, and is withdrawn
by the worker from said normally closed switch means when the
worker goes on a job to permit said normally closed switch means to
close and said counter to count the periodic pulses produced by
said periodic pulse producing means during the time said separable
actuating device is withdrawn, said normally closed switch means
including a receptacle for receiving said worker assigned separable
actuating device, and means positioned within the receptacle for
engaging said separable actuating device for opening said normally
closed switch when said separable actuating device is inserted into
said receptacle, said separable actuating device being a phone-type
plug including a handle portion and a shank projecting from said
handle portion, said receptacle having a complementally shaped
opening for receiving said shank, said shank having a body portion
and a tip end portion and an annular groove adjacent said tip end
portion, and said means positioned within said receptacle for
engaging said separable actuating device having a resiliently
biased projection for engaging said groove and frictionally holding
said separable actuating device in said receptacle, said body
portion of said shank and said tip being of electrically conductive
material and being separated by an insulated portion, the handle
portion of said plug being hollow and enclosing a calibrated
electrical resistance means, and means connecting one side of said
resistance means to said tip portion and means connecting the other
side of said resistance means to said body portion.
Description
This invention relates to apparatus for accumulating the time spent
on a job by one or more workers.
The apparatus disclosed herein is to be used in conjunction with
the Cost Accumulator and Method for Cost Accumulating disclosed in
the co-pending patent application Ser. No. 2,693, filed Jan. 14,
1970 in the names of Charles F. Strandberg, Jr. and Robert C.
Strandberg and assigned to the same assignee as the present
application.
In the cost accumulator disclosed in the aforesaid co-pending
patent application each worker on a job is assigned a rate
programmed resistance plug the resistance value of which is
calibrated in accordance with a particular worker's pay scale. The
cost accumulator comprises an electric oscillator whose frequency
is a function of the resistance value of a resistance-capacitance
timing circuit which includes parallel connected jacks into which
the worker's rate programmed plugs are inserted when the workers
are on a job and from which the plugs are removed when the workers
go off a job. The frequency of the electrical oscillator is varied
as the workers, one or more at various times, plug-in and withdraw
their rate programmed plugs from the cost accumulator. Means is
provided within the cost accumulator for producing electrical
pulses corresponding in frequency to the output frequency of the
electrical oscillator, and additional means is provided for
counting the pulses and giving an indication of the number of
pulses counted. Since the oscillator frequency varies as a function
of the composite pay rate of all the workers on a job at a given
instant, the accumulated count over a period of time can be made to
be an indication of the accumulated cost of the job as the job
progresses.
It is an object of the present invention to provide a time
accumulator which will accumulate the time which individual workers
(one or more) spend on a given job using the same rate programmed
plugs provided for use with the aforementioned cost accumulator to
control the time accumulator to start and stop the accumulation of
time the worker spends on a job. By requiring the same
worker-assigned actuator plug to start and stop the time
accumulator as is required to set into the cost accumulator a
worker's pay rate, the two machines can be made to complement each
other.
It is another object of this invention to provide a time
accumulator which is controlled by a worker assigned plug adapted
to be plugged in and out of the time accumulator to start the
accumulation of time when the worker assigned plug is withdrawn and
to stop the accumulation of time when the plug is reinserted into
the time accumulator.
It is another object of this invention to provide a system for
substantially simultaneously counting labor cost on a job and
accumulating individual worker's time on the same job, comprising
an electrical cost accumulator, an electrical time accumulator and
a rate programmed plug assigned to each worker on the job, each
plug including an electrical resistance element set to a
predetermined value corresponding to a worker's pay scale, the cost
accumulator and the time accumulator both being controlled by the
rate programmed plugs, in diverse ways, said time accumulator
having plural means each actuated by the insertion of one of the
worker's rate programmed plugs into a receptacle in said time
accumulator for stopping the time accumulating function of said
time accumulator for the particular worker, and actuated by the
withdrawal of the rate programmed plug from said receptacle to
start the time accumulating function of the time accumulator, said
cost accumulator having plural receptacles for receiving at a given
time one or more of said rate programmed plugs as the workers
remove their assigned plugs from the time accumulator, said cost
accumulator having means controlled by the rate programmed plugs to
vary the accumulation of labor costs as a function of the composite
rate of all the rate programmed plugs which are plugged into said
cost accumulator at a given instant.
With the foregoing objects and features in view and such other
objects and features as may become apparent as this specification
proceeds the invention will be understood from the following
description taken in conjunction with the accompanying drawings
wherein like characters of reference are used to designate like
parts, and wherein:
FIG. 1 is a perspective view of the time accumulator of this
invention looking toward the display face thereof with one worker's
plug in a jack and another plug about to be inserted into a jack,
and with a cost accumulator mounted on top of the time
accumulator;
FIG. 2 is a fragmentary front elevational view on an enlarged scale
showing one display area of the display face of the invention;
FIG. 3 is an enlarged side elevational view of one of the plugs
shown in FIG. 1;
FIG. 4 is a schematic wiring diagram of the invention showing two
similar individual worker's time accumulator units with circuits
for adding other similar individual workers' time accumulator units
broken away; and
FIG. 5 is a schematic circuit diagram of one of the rate programmed
plugs.
Referring now to the drawings in detail and particularly to FIG. 1
the time accumulator is designated by the reference number 10 and
includes a box-like housing 11, one wall of which is a display
panel 12. The display panel 12 has an exterior display face which
includes a plurality of similar display areas A,B,C within the
boundaries of the display face. One of the display areas is better
shown by means of an enlarged view in FIG. 2. Within a display area
are located a channel shaped receptacle 13 for receiving a worker's
name tag, an indicator lamp 14 for indicating when energized that a
worker is on the job, a viewing window 15 for viewing the numeral
indicators 16 of an electrical counter, a counter reset dial 17, a
plug receiving jack 18, and a time card receiving slot 19. FIG. 1
shows one of the assigned worker's plugs 20 positioned in one of
the jacks 18 in the display area B and a second worker's plug in
line with, but removed from, the jack 18 in the display area A.
While FIG. 1 shows only three display areas on the face of the cost
accumulator it is to be understood that as many display areas and
associated components may be provided as necessary to accommodate
the anticipated number of workers on a job within, of course,
practical limits of available space. The display areas are all
similar and include similar components associated therewith. While
the display areas are shown arranged in a single transverse row
across the display panel in FIG. 1, it should be recognized that
the display areas can be variously arranged in multiple rows and
columns to cover the face of the display panel depending on the
number of display areas required to accommodate the workers on the
job.
FIG. 4 is an electrical schematic diagram showing the components of
the invention required to accumulate and indicate the time
accumulated by two workers on a job. While only the components
necessary for two workers are shown in FIG. 4, similar components
for any desired number of workers within practical limits can be
readily added as will be subsequently explained.
The time accumulator includes a synchronous timing motor 28 which
is energized continuously via power leads 25 and 26 from an A-C
power source connected to the terminal strip 27 as shown in the
lower left of FIG. 4. The synchronous motor speed is preferably
chosen to be 100 revolutions per hour, or one revolution every 36
seconds. A rotary cam 29 attached to the shaft 29' of the motor
actuates a normally open switch 31 momentarily during each
revolution by engaging the pivoted lever arm 30 and forcing the
lever arm clockwise to depress the outwardly biased switch actuator
button 32. The normally open switch 31 and associated synchronous
motor driven cam 29 provide a means for producing a periodic timing
pulse representative of a predetermined increment of time. The
periodic switch 31 is connected on one side to power lead 26 via
conductor 36 and power branch conductor 37 and is connected on its
other side to circuit conductor 38. The circuit conductor 38, the
power branch conductor 37 and another power branch conductor 39
connected to power line 25 serve as trunk lines to which multiple
time accumulator units are connected. Each time accumulator unit
includes an electrical counter 33, and a normally closed telephone
jack type switch 34 connected in series across the circuit
conductor 38 and the power line branch conductor 39. Each time
accumulator unit also includes an electrical indicator means 35
which preferably includes a panel lamp 14, and a series resistor
43, connected on one side through conductor 36 to the power branch
line 37 and on the opposite side through conductor 41, the normally
closed switch 34, and conductor 42 to the power branch line 39.
The telephone jack type switch 34 preferably includes a
single-throw set of contacts d,e and a double-throw set of contacts
a,b,c. The movable contacts b and d of the two sets of contacts are
interconnected by an insulated rod 44 so as to be actuated
simultaneously when a worker assigned separable actuating device
such as the rate programmed plug 20 is inserted in the jack
receptacle ring 18'. A V-shaped bend projecting downwardly from the
free end of the movable contact d is positioned with respect to the
axis of the receptacle ring 18' so as to be engaged by the end 21
of the plug 20 and displaced outwardly from the axis of the
receptacle ring 18'. As shown in FIG. 4 the switch 34 in unit A is
closed, while the switch 34 in unit B is held open by a plug 20
inserted in the jack 18. The contacts a and c of the switch 34 are
fixed contacts, alternately engaged by the movable contact b in the
closed and open positions of the switch respectively. The contact b
is connected through conductor 41 to one side of the counter
solenoid coil 33' and through conductor 40 connecting the other
side of the counter coil 31' to the circuit conductor 38. Normally
when no plug 20 is inserted in the jack 18 the movable contacts b
and d are resiliently biased to engage the fixed contacts c and e
respectively. The V-shaped bend (which will be referred to as a
detent) on the contact d will engage the annular groove 23 on the
plug shank 22 when the plug is fully inserted in the receptacle 18
and frictionally hold the plug in place. Contact c is connected
through conductor 42 to the power line branch conductor 39. Movable
contact d and the metal jack ring 18' are both connected to ground,
and the fixed contact e is connected via conductor 46 to a terminal
on the bus bar 27 which may be connected through appropriate wiring
to a remote lamp not shown.
If the rate plug 20 is not inserted in the jack 18, the condition
of switch 34 will be as shown in unit A (FIG. 4) and the panel lamp
14 will be continuously energized from the A-C source through the
normally closed contacts b,c of the switch 34. Through these same
contacts b,c the counter coil 33' will be momentarily energized
each time the periodic switch 31 is actuated by the cam 29 attached
to the shaft of the synchronous motor 28. An optional remote lamp
terminal 47 will be grounded through the contacts d and e of the
switch 34. The remote lamp may serve to show which employees are
working.
If the rate plug 20 is inserted in the jack 18 (the condition shown
in unit B, FIG. 4) both sets b,c and d,e of normally closed
contacts in switch 34 will open and no power will be delivered to
the panel lamp 14 and the counter coil 33'. Since the metal jack
ring 18' and the movable contact d are grounded at all times both
the body 22 and tip 21 of the rate plug are grounded while in the
jack 18 thereby eliminating any electrical hazzard.
The operation of the time accumulator will be apparent from the
foregoing description. As long as the time accumulator is connected
to A-C power through leads 25 and 26 the synchronous motor 28 will
be energized, and will rotate cam 29 at a uniform speed to
repeatedly open and close switch 31. Since circuit conductor 38 is
connected through the periodic switch 31 to power branch conductor
37 electrical pulses will be available to any number of accumulator
units connected in closed circuit from the circuit conductor 38 to
the other power branch conductor 39. Each accumulator unit
including a counter coil 33' in circuit with normally closed
contacts b,c of the switch 34, will be energized to count the
pulses appearing on the circuit conductor 38 as long as a rate plug
34 is not inserted in the jack 18, and the panel lamps 14 being
connected directly from the power branch conductor 37 through the
closed contacts b,c of the switch 34 to the other power branch
conductor 39 will be energized. As previously explained the
normally closed condition of switch 34 is the condition when the
rate plug is not inserted in the jack 18 and is the condition when
the worker is on the job, the rate plug 20 having been removed from
the jack 18. When the worker goes off the job he reinserts the plug
20 in the jack 18, the switch 34 is opened, the panel light 14 goes
off and the counter 33 ceases to count.
Whenever a job is completed or at the end of a payroll period a job
supervisor can reset the time accumulator units to zero by means of
the counter reset dials 17. The counters 33 should be reset only
with the plugs 20 for each worker plugged in. The counters 33
indicate hours to the one-hundredth of an hour.
The time accumulator panel 12 may optionally be furnished with
slots 19 to hold time cards on which the daily ascending balance of
time worked can be entered.
The separable actuator 20 sometimes referred to as a plug, rate
plug, or rate programmed plug, is shown in detail in FIGS. 3 and 5.
It may be the same plug 24 as is disclosed and described in
co-pending application Ser. No. 2,693 previously referred to, and
must be similar to the rate programmed plug 24 disclosed in the
aforesaid pending application if it is to be used in conjunction
with the cost accumulator disclosed in the aforesaid application.
FIG. 5 shows schematically the electrical circuit arrangement of
one of the plugs 20 which includes a calibrated resistance means
connected in circuit between the conductive shank body 22 of the
plug 20 on one side and the conductive tip 21 on the other side.
The calibrated resistance means includes a potentiometer 50 and
fixed resistor 51 connected in series. The resistance means is
selected and calibrated to be a function of the pay rate of the
worker to whom the plug is assigned. The tip 21 and the body
portion 22 of the plug shank are electrically separated by an
insulator portion which may be in the groove 23.
Again referring to FIG. 1, a cost accumulator which is described in
detail in the aforesaid application Ser. No. 2,693 is shown
positioned on top of the time accumulator housing. While the cost
accumulator does not have to be mounted on top of the time
accumulator the two devices should be located in close proximity if
they are to be used in conjunction with one another so that when a
worker pulls his plug 20 from the time accumulator he can
immediately insert his plug in one of the jacks J of the cost
accumulator. Or, when the worker pulls his plug from the cost
accumulator he can immediately insert his plug in his assigned time
accumulator unit in the time accumulator. The rate programmed plug
20 when inserted in one of the cost accumulator jacks J provides an
input of the worker's pay rate into the cost accumulator.
While the time accumulator particularly described in this
specification has been described as part of a system including a
cost accumulator and a rate programmed plug which serves both the
time accumulator and the cost accumulator, it is not intended that
the use of the time accumulator be limited to such a system. The
time accumulator may readily be used as a separate time
accumulating device, requiring only a separable actuator for
controlling the switch 34.
* * * * *