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Патент USA US2405818

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Aug. 13, 1946.
Original Filed Feb; 26, 1942
2 Sheets-Sheet 1
Aug. 13, 1946.
Original Filed Feb. 26, 1942
2 ‘Sheets-Sheet 2
Patented Aug. 13, 1946
Adolph L. Denniston, Plain?eld, N. J.,' and Samuel
Harold Martin, Thomaston, Conn., assignors to
General Time Instruments Corporation, New
York, N. Y., a corporation of Delaware
Original application February 26, 1942, Serial No.
432,386. Divided and this application March 6,
1944, Serial No. 525,222
3' Claims. (Cl. 74-526)
This invention relates to improvements in secondary apparatus for time systems and partic-
being made up of a plurality of laminations which
are held together by means‘ of the two yoke
ularly to an improved corrective mechanism for
shaped plates 25. The yoke-shaped plates 25' are
time recorders operated in circuit with a master
provided with suitable lugs 28 which engage the
top and bottom laminations, and rivets 29 serve
This application is a division of our co-pend-
to hold the assembly together. Rigidity is im
ing application, Serial No. 432,386, ?led February
parted to the assembly by means of the tie rod
26, 1942, and is directed to the novel locking disk
21 which passes through and is secured to' each
for the corrective secondary mechanism disclosed
of the plates 25. A shaft 30 is J'ournalled inlthe
and Claimed in Said application.
10 side plates 15 and I6, and the yoke-shaped‘ plates.
With reference now to the drawings in which
or armature holders 25 are secured to the shaft
likenumerals designate like parts—
Fig. 1V is an elevation of the secondary mechanism of a job time recorder which constitutes
36. Both the shaft 30 and the tie rod 21 are
extended through plate IS, the plate being pro
vided with a suitable slot 3! to permit rotation
a preferred embodiment of this invention.
Cer- 15 of the armature assembly.
tain parts of the mechanism are broken away
for the purposes of clarity;
Fig. 2 is a plan view of the mechanism shown
in Fig. 1:
Fig. 3 is an elevation of the time disk, shown 20
Mounted on the shaft 30 and the tie rod 21
exteriorly' of the plate I6 is an arm 32 which
carries at one end a pawl 33. A ratchet wheel
34 is mounted on a shaft 35 which is journalled
in the side plates l5 and I6, and ratchet wheel
in Figs. 1 and 2, the time disk being adjusted
forahalf hour cut-out period;
Fig. 4 is an elevation of the time disk which
being disposed exteriorly of! the plate |6 so that
it maybe engaged by the pawl 33. A gear 36
is secured to‘ the shaft 35' which meshes with
has been adjusted for a forty-?ve minute cut-out _ another gear 38"mounted on‘ a shaft 31. The
25 latter shaft is j'ournalled in the side plates l5
Fig. 5 is an elevation of the time disk as shown
and‘ H5 and is disposed immediately beneath the
in Fig. 4, but in a changed position;
shaft 35. A plurality of type wheels, which» are
Fig. 6 is an elevation of the time disk which
generally designated by the reference numeral 39
has been adjusted for two forty-?ve minute cutare mounted on the shaft 31.
out periods;
30- A spring 40 extends between the‘ pawl 33 ‘and
Fig. '7 is an elevation of the time disk as shown
in Fig‘. 6 in changed position;
Fig. 8 is a sectional elevation of the time disk
the arm 32 and serves to urge the pawl into en
gagement with the ratchet wheel 34.‘ A locking
pawl!!! is also provided for cooperation with the
taken along line 8-81 of Fig. 3;
_ ratchet wheel, the lo'cking'p-awl being-mounted'on
Fig. 9 is an enlarged sectional elevation taken 35 a pin 42 which extends inwardly from a plate
along line 9-9 of Fig. 5;
Fig. 10 is a section taken along line l0-—l0' of
43. The plate 43, which is partially broken away
in Fig. 1, may be suitably secured with respect
Fig- 2; and
to the plate l6 by spacer means not shown herein.
Fig. 11 is a section similar to that shown in
One end of a spring 44' engages the locking pawl
Fig. 10 with the parts in changed position.
40 M and» the other end is secured to the'plate 43,
Referring now to Figs. 1 and 2, the reference
so that the locking pawl will be urged against
numerals l5 and I6 designate two plates on which
the ratchet wheel‘. An \operating spring 58 is
the secondary mechanism is mounted, these plates
provided for they armature assembly, one end of
being held in spaced relationship to each other
the spring engaging'the arm 32, and the other
by means of spacers I 7. Two coils, I 8- and I9, 45 end being affixed to the plate 43.
which constitute an electromagnet, are suitably
In‘ operation it will be seen that when the coils
mounted with respect to the side plates 15 and
I8 and I9‘ are energized, that the armature as-
l6, the coils being provided with pole pieces 20
and 2|. An intermediate plate 22 is disposed be-
sembvly, comprising the armature 24, the yoke
shaped platesI Z5; and'the arm 32, will be rocked
tween the side plates l5 and l6,_and extends be- 50 in the counter-clockwise direction, as shown in
tween the coils l8 and [9, this plate 22 being
suitably mounted‘ with respect to plate I5 by
Fig. 1. against the tension of'the operating spring
5.8; This c‘ausesthe pawl 33 to be drawn over
spacers 23 as shown in Fig. 2.
one teeth 01-‘ the ?fteen» tooth ratchet wheel 34.
An armature 24 is provided for cooperation
with the pole pieces 20 and 21, the armature
When‘ the coils l8‘ and I!) are deenergized, the
-, operating spring 58 causes rotation of the as
/ \
sembly in a clockwise direction, thereby rotating '
the ratchet wheel for one-?fteenth of a revolu
tion. The locking pawl 4| serves to prevent
counter-clockwise rotation of the ratchet wheel
34 as the pawl 33-is retracted during energization
The operation of the armature locking means
is additionally controlled by a time disk, indi
cated generally by reference numeral 10, which
is mounted on the shaft 65. The time disk, as
shown. in Fig. 8, comprises a. hub 7'“ which is
provided with an extension in the form of a
of the electromagnet.
sleeve 12. A disk 13 is secured to the sleeve 12.
If the coils l8 and H) are energized once every
Plates l4 and ‘:5, each in the form of a sector,
minute, it will be seen that the ratchet wheel 34 ~
are rotatably mounted on'the sleeve 12 at either
is driven thereby at a speed of four revolutions
per hour. The gears 36 and 38' are so propor 10 sideof the disk 13. A washer 16 is positioned
on the sleeve. 12 exteriorly of the plate 15, and
tioned that the shaft 31 upon which the type
sleeve is upset as indicated at 11, to hold the
wheels 39 are mounted, is caused, tov rotate at. a»
assembly together. The hub ‘H is provided with
speed of ten revolutions per hour.
a~set-screw 18-v extending therethrough so that
A rock shaft 45 is suitably journalledz in the
side plates is and I6, and a plate 45 is suitably 15 the position of the disk 13 may be ?xed with
respect ‘to. the shaft'65. The disk may be keyed
to-the sleeve 12‘, or. otherwise associated therewith
in non-rotatable relationship. The disk is pro
of a horseshoe, is secured to the plate 46 by
three slots 80, BI and 82, which are
means of a small overlying plate 49, and aiscrew
50 which takes into the plate 46. A plurality of 20 disposed at 90° from each other. The disk is
also providedwith a series of apertures83, which
pins 56 project-from the surface of the-plate 46
cooperate withstamped depressions '84 and 85
and engagev the permanent magnet 48» to hold it
formed intheplates. 14 and ‘I5. It will be seen
ina predetermined position with respect to the
from an inspection-of'Figs- 3 through '7 that the
A strip of magnetic material 51 is. secured to 25 position of the plates 14 and 15 may be shifted
so as to- block-out one or more of the slots 80,
the‘ intermediate plate: 22 as 'shown in Fig. :2, one
81 and 82. The depressions-84 and 85 cooperate
end 52 of said strip embracing: the pole’ piece 20,
with one or theother of the. apertures 83 so that
and the ‘other end of-said strip being‘ bent over
the plates will be maintained securely in their
to‘ form an auxiliary pole? piece 53. This. aux
adjusted positions.
iliary- pole piece! extends-between the north and
The plate 6| is provided with a bent-over-lug
south poles‘ Sit-and 55- respectively, of the per
86, which lug-isadapted-todrop into one ofthe
manent magnet 48:
slotslill, 8! or 82 as-thetime disk- is rotatecLpro
The coils~l81 and l9-are so wound. that when
viding that the coils I8- and I9» are actuated: by
energized by a current-of-normal polarity the
an impulse of. reversed polarity. The purpose of
pole piece 20 is the south pole, andwthe-pole piece
the time disk .is. to prevent the operation of the
2| isthe north pole Thus,- the permanent mag
armature locking mechanism which. comprises
net- is norm-ally in thev position as‘ shown in Fig.
the rock plate BI and. the permanent magnet 48.
10 wherein. the north ‘pole 54101? the permanent
except during certain positions of the time disk.
magnet. 48'- is- attracted by the. pole piece 53.
However, when the coils.» l 8 and“ I 9* are’ energized 40 These positions, of course, are determined by the
times during. which one ofrthe slotsBG; ?-ilor 82
by'a current of reversedpolarity, it will be seen
are opposite the lug; 86.“
that the: pole" piece 20" and the auxiliary pole
The secondary mechanism-herein described is
piece 53~are both north poles, and the rockshaft
adaptedtobe connected into the corrective cir
45- is caused to rotate --in1 the clockwise direction
due to the. attraction of the south pole 55. by the 45 cuit of atime system such as that disclosed. in
mounted on the rock shaft bymeansofahub
'41. A small permanent magnet 48‘, in the shape
v polepiece- 53iwhich is of the; opposite polarity.
Ant arm EB/is-"secured'at one end to the arma
Patent-No.v 2,332,828issued. OctoberZS, 1943, to
Lorenz et al... In, that particular system a master
clocktransmits?an impulse. every minute to: the
secondarieswhich are connected. inv circuit there
above the rock shaft 45. Arock plate BI is se
cured to the rock shaft'45 by-mean's of a hub 62, 50 with. At certain predetermined intervals, such
asat-every hour, aseries-of rapid impulses ls'a-lso
and is provided with‘ a bent-over lug‘ 63- which
ture 24-and its opposite-'end'terminates.atapoint
> is adapted to. engagetheea-rm 60'. When vthe coils
l8 and |9~are energized by a current of normal
polarity, the lug~?=3v>will bervclear of the arm 60-,
transmitted to the secondary. The rapid impulses
and several-of the. minute-impulses immediately
preceding them are of reversed polarity, and may
thereby permitting, operation of the armature 24‘. 55 be. termed, locking.im_pulses,..inasmuch as. they
But when-the coils l8 and=l9~are energized by a
current ofsreversect polarity, the rock ‘plate 6-!
is-oaused to: rotate- from-v-the position shown in
cause operation of the locking-pmechanism to lock
the armature of a secondaryin operative posi
tion. The remaining minute impulses are 05 nor
mal polarity, and maybe- termed non-locking
Fig. 10410 the position shown» inY-Fig. 11v so that
the lug-B3 engages the arm‘ 60~ and'the armature 60 impulses. The pawl-and ratchetmecham‘sm, 33
and. 34; cause thermechanism to be advancedv step
assembly- is locked in itsattracted position. Sub
by-steprby eachlminute. impulse through a cycle
sequentim-pulses of-reversed polarity will there
of operation-1which.correspondsv to the cycle of
fore have noe?-ect uponthe- armature, and the
operation of. the master. clock.‘ During each
ratchet wheel 34- will- not- be advanced by said
65 cycle, the secondary» mechanism moves through
a. locking position, that 15.3.. position in which one
Journalled in plates‘ Iii-and 22 is a shaft 65
of the'sl0ts80, 8101182: is opposite the lug. 842?. As
which carries a vgear 66 exteriorly of the plate [6.
pointed- out-above; thesecondary willv be locked ‘in
A pinion, 8F|~ is mounted, on» the shaft 35;v and
this position'if a locking’ impulse is.~received at
meshes with anidler gear- 68 which‘ in turn is
this time, and it will remain locked‘ in ‘this posi
mounted on. a-stubshaft-iii-secured to the plate
tion and will not beadvanced until a non-locking
Hi; The gear’ 66. meshes‘ with‘the idler gear- 63
impulse or‘ an impulse of normal polarity 'isire=
so. thatathe shaft 65 is driven from the‘ shaft
ceived by it.
35; the, gears being so» proportioned that the shaft
When the secondary is on time, that‘isr, when
654 normally rotatesat a speed-‘of one revolution
it is in phase-synchronism with ‘the master‘ clock;
per hour.
the secondary will be locked only during the
transmission of the rapid impulses, this is during
the 59th minute inthe system above referred to.
If the secondary is slow, it will not be locked
until‘ it has been advanced by the rapid locking
impulses to the 59th position, and then it will be
locked in that position until the 60th impulse un
locks the armature. If the secondary is fast, it
will‘ be locked in the 59th position by one of‘ the
locking impulses which precedes the rapid im
pulses. In the system above referred to, the 52nd
through the 59th impulses are looking impulses,
so the secondary will be corrected if it is not more
than seven minutes fast.
The slots 8&1, 8| and'82 are so arranged that the
cycle of operation of the secondary may be shifted
with respect to the cycle of operation of the mas
corrective. circuit, the armature being free to op
erate as shown ‘in Fig. 10. The type wheels 39
will be advancedevery sixth minute to record the
time elapsed since the beginning of the work day.
If, however, an uncovered slot in the time disk
"If! is opposite the lug 86 during the transmission
of- a locking impulse," the armature will be locked
in its operated position as shown in Fig.11. This
position of the‘ secondary mechanism as a whole
may be termed the chronologically synchronized
position inasmuch as at the end of the 59th min
ute, the‘ position of the secondary'is synchronized
with that of the master clock, irrespective of ‘the
relationship of their positions when the arma
ture 2&3 is ?rst locked, provided that this rela
tionship does not exceed the. maximum fast or
slow correction of the system and’ of the par
ter clock. If the plates 14 and 15 are adjusted to
ticular secondary. The armature is unlocked by
cover the slot 81, and if the secondary is discon
the 60th impulse, which may be termed the syn
nected’ from the corrective circuit for half an 20 chronizing impulse, and the operating spring 58
hour, it will be seen that when the secondary is
causes the mechanism to be advanced one step.
again connected into circuit it will be one-half
As pointed out above, when the plates M and
hour slow. This one-half hour represents the
75 of the time disk ‘H! are adjusted to cover slot
non-productive period, or as it might be termed,
8!, the secondary is caused to shift its chrono
the disconnected interval, the recording of which
is not desired.
Before the disconnected interval, correction is
effected during the 59th minute of each hour by
logically synchronized position after a discon
necvted interval of half an hour from that shown
in Fig‘. 11 to that shown in Fig. ,3.
If. a disconnected period of forty-?ve minutes
is desired, the plates may be adjusted to cover
slot so; as. shown in Figs. 4 and 5. For instance,
the dropping of‘ the lug 86 into the slot 8% as
shown in Fig. 11. After the disconnected inter 3 O
val, the slot 82 will be opposite the lug 86 during
the chronologically synchronized position of the
the 59th minute of each hour, if the secondary is
secondary at some time‘ in- the. morning, say at
on time, and the secondary will be locked in the
11:59, is shown in Fig. 4', and if the recorder is
desired position (half an hour slow) during the
disconnected during a lunch period‘ from 12:00
transmission of the rapid impulses. Similarly, if
the secondary is a few minutes fast or slow, cor
rection will be effected with respect to the slot 82,
as shown in Fig. 3.
But if the slot 82 were covered so that correc
to 12:45, by 12:59 the‘ time disk will‘ have ad
vanced only 90°. This position is a chronologi
cally synchronized position because, as shown in
Fig. 5, the slot 3! is 90° behind slot 82.
If the plates 74 and l5 have been adjusted so
tion could be e?ected only with respect to the 40 that no slot is covered, the chronologically syn
slot 80, the armature 24 would not be locked dur
V chronized position of the time disk at 12:59 P. M.
ing the 59th minute, and the secondary would
and at 7:59 P. M, as shown in Fig. 6,~is the same
be advanced by the rapid impulses, and the dis
as that shown in Fig. 5, except for the changed
connected half hour would be picked up and re,
position of the plates. The position of the plates
corded by the type wheels. This is the reason 45 as shown in Figs. 6 and 7 permits a second dis
why secondaries with only one corrective posi
connected period of forty-?ve minutes, say a sup
tion, or only one slot or notch, must be connected
into a non-corrective circuit after the discon
per period for the second shift between 8:00 P. M.
and 8:45 P. M. The chronologically synchronized
nected interval.
position of the time disc after this second dis
The type wheels 39 ‘comprise a blank wheel 90, 50
connected interval, say at 8:59 P. M., is shown
a tenths of an hour wheel 9|, an hour wheel 92,
in Fig. 7.
and a ten hour wheel 93, this arrangement being
Obviously these disconnected intervals may
adapted to operate for 20 hours out of each 24.
bear any relation to the chronologically synchro
Of course, if it is desired to connect the recorder
nized positions; that is they need not immediately
to the time system for 8, 16 or 22 hours or any 55
follow them as above described.
different period of time, the proper sized wheel
At the end~0f the work ‘day, the secondary
may be substituted for wheels 92 and 93. The
should again be disconnected from the corrective
blank wheel 98 is secured to the shaft 3‘! and ro
system for a period of one-half hour or ?fteen
tates with the gear 38 at the rate of ten revolu
as the case may be, in order to shift the
tions per hour. The tenth of an hour wheel 9| 60 minutes,
chronologically synchronized position back again
is advanced one step by each revolution of the
to the slot as so that the secondary will again
wheel 90 by the usual carry-over mechanism not
in the correct position to start out a new day.
shown herein, and the wheels 92 and 93 are ad
As the time wheels accumulate only up to twenty
vanced by their preceding wheels in a like man
ner. The blank wheel 90 is provided so that the 65 hours, as herein disclosed, this disconnected in
terval should be lengthened su?iciently so that
printing position of the ?rst printing wheel 9|
of the series will not be affected by any variation
in the relative position of the ratchet 34 and the
pawl 33 during consecutive operations, nor by any
tendency of the ratchet to creep when the arma 70
ture 24 is in its attracted position.
the type Wheels will be in their “0” position at the
beginning of the next day.
It is obvious that disconnected intervals, other
than the thirty minute or forty-?ve minute in
tervals above mentioned, may be provided by
forming the slots in different positions. For in
In operation, the secondary mechanism, includ
stance, disconnected intervals of twenty minutes
ing the ratchet wheel 34 and its associated parts,
or forty minutes can be provided by forming the
are normally advanced step by step by the im
slots BE], 8! and 82 at 120° from each other. Sim
pulses transmitted by the master clock over the 75. ilarly, intervals of thirty-?ve or ?fty minutes may
be; provided, itnot being. essentialithat the in
terval be a fraction of one hour, It may also be
desired to have two or more slots in a group,
spaced from each other by- a distance, represent
ing; ?ve or ten minute intervals. In this event
one plate may cover the whole group, and the
plate may be shifted to selectively expose one
or the other slots of the group. In the alterna
tive, of course, a slot could be provided in one of
the plates which would overlap a much wider slot 10
in the-disk 13 inorder to permit adjustment of
five'onten minutes one way or the other..
If. desired, one wall of the slot may be disposed
attan angle to‘ the other to permit a camming
disk whereby said plates may be- rotated with
respect'to said disk to selectively cover'one or'the
other of ‘said cut-away portions;
2. A time disk for controlling the operation of
a- job time recorder comprising a hub member, a
disk secured thereto, plates rotatably mounted on
said hub on either side of said disk and held
against the side surfaces of said disk, the pe
riphery of said diskbeingcut-away- at a plurality
of ‘points and said plates being adapted to cover
one‘ of said cut-away portions to form a con
tinuous peripheral. edge whereby saiclplates may
be adjustedwith respectlto said disk to selectively
cover one or the other of, said cut-away portions,
outxaction- of'thelug 86 when the armature is 15 and means to‘maintain said plates in adjusted
manually operated, as described in the above
3. A‘ time disk for controlling‘ the operation of
mentioned, patent.
a job time recorder; comprising a hub member, a
Although-only a preferred embodiment of this
disk secured thereto, platesrotatably mounted 0
invention: has been described herein, it is obvious
that’ numerous modi?cations and changesin the 20 said hub on’ either side of said disk and hel
size, shape and proportion of the parts may be
made Without departing from the spirit of this
invention. The above description is illustrative
only, and thissinvention is defined only by the
appended claims
We claim:
1. A time disk for controlling the operation of a
job time‘ recorder comprising a hub member, a
diskrsecured thereto, plates rotatably mounted on
said hub on either side of said disk and held
against the side surfaces of said disk, the pe- '5
riphery of said disk being'cut-away at a plurality
of' points and saidplates being a width su?icient
to cover one of said cut-away portions and hav
ing‘ an outer edge matching the periphery of said
against the side surfaces‘ of said disk, the ps3
riphery' of said disk being cut away at a plurali-t
of points and each of said plates'being a width
su?icient to cover one of said cut—away portions
and having an outer edge matching the periphery
of said disk whereby said plates may be rotated
with respect to said disk to selectively cover-one
or more of said cut-away portions, said disk be
ing provided with a plurality of apertures and
said plates being'provided- with:depressed por
tions adapted to fit‘ into said apertures whereby
said plates may be held in place overlying One
or more of said cut-away portions.
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