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Publication numberUS1096778 A
Publication typeGrant
Publication dateMay 12, 1914
Filing dateMay 25, 1909
Publication numberUS 1096778 A, US 1096778A, US-A-1096778, US1096778 A, US1096778A
InventorsEdward E. Clement
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electric clock.
US 1096778 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)



1,096;778. Patented May 12, 1914 7 SHEETSBHBET 1.

3111mm to:


ELECTRIC) CLOCK. urmoumx FILED my 25, 1909.

- 1,096,778, Y Patented May 12, 1914,





APPLICATION 11mm MAY 25, 1909.

1,096,778. PatentedMay 12,1914.



. APPLIQATION FILED MAY 25, 1909. 1,096,778. Patented May 12, 191 1 7 SHBETHHBET 4.



- Patented May'12, 1914.

I smarts-alum 5;



mrmouxpx Hum ya 25, 1909.


Patented May12,191-L E. E. CLEMENT.


H mm km W Patented Maj-12 Ch me .Strike than:

To all whom it may concern:

'vious invention for which Letters face new, of a modification havin EDWARD E. CLEMENT,



Be it known that I, EDWARD E. CLEMENT,

a citizen of the United States, residing at \Vashington, in the District of Columbia, have invented certain new and useful Improvements in Electric Clocks, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to electric clocks and is in the nature of an improvement on a pre- Patent No. 920,024, dated April 27, 1909, have been granted to me on an application filed December 2, 1905, Serial No. 289,977.

In myformer case I disclosed a system in which a frame'or dial served as a support for electric lamps set around in fixed osition, and lighted in succession from a c driven commutator so that the indications thus produced appear to travel like the hands of an ordinaryclock. In the present case I shall set forth a similar arrangement of lamps or fixedi indicating devices, lighted from a clock-driven commutator, with the addition of fixed lamps representing a pendulum or balance wheel at different points of its travel, such lamps being lighted from a suitable commutator in successive groups so as to produce the effect of a swin in pendulum or an oscillating balance w ee In addition to this I preferably provide my clock frame with electrical striking means and chimes, the conducting wires for which p th u a artof the; same group of controlling wires as thosewhich supply current to the lainps.

The organization of the clock ,is thuscom plet-ed I v y Referring to the accompanying drawings Figure Iisa faceview of a pendulum clock with chimesland a striker bell. Fig. 2'is a wheel instead ofa pendulum. I g S. 3 and 4 v are diagrams V of the 4 connections of the traveling hour and the traveling minutes- (orseconds) lamps, respectively, (the com- Inutator rings for the minutes'and seconds lamps bein duplicates). Fig. 5is a similar diagram fo the connections'for the pendua lamp i .fi' e s mi a diagram o ocksame cable: and form a a balance Specification of Letters Patent. Patented wl'ay 12 1914 Application filed. May 25, 1909. Serial NO. 498,369. 7 v

' the connections for the balance wheel lamps.

Fig. 7 is a similar diagram of the connections for the striking and chime mechanism. Fig. 8 is a detail View of parts thereof. Figs; 9, 10 and 11 are bottom, side and part sectional views of lamp socketsand mountings. Fig. 12 is a side view of one arrangement of commutators and clock control. Fig. 13 shows a clock face with electric lights arranged to represent complete hour and minute hands, and the tip of the seconds hand, in different positions.- Figs. 14 and 15 are details of the striking and chime connections. Fig. 16 is a perspective view of a multiple dial clock tower represented or outlined by electric lamps arranged in accordance with myinvention.

Referring to Fig. 1, 1 is a ring frame supported in any suitable manner, as by a base frame 2.. Around the ring frame are located fixed hour lamps 3, which, I preferably make of a distinguishing color, as red. Around these lamps is a continuous row of seconds lamps, which are light-ed in succession, second by second, from the seconds commutator which will be-described in connection with the circuits. Inside of these seconds lamps is a or groups representing inside of these is a row groups representing .theri'ng 1 and mounted upon the frame 2, are several groups of lamps 7, 8 'an d. '9,

minutes hands, and of hour lamps 6 'or a pendulum swinging from side to side be: low the ring '1, p I These groups of lamps are lighted number of groups may rounded bythe chime bells 11L in mechanism I be. Is is shown-in v troma'gnet with a Pe c t re an re i We e e d row 5'of minutes lamps,

mounted'uponthe frame-soas'to represent in three difierent'"positions.

cession, each group i in its entlrety, and the Within the frame 1 is hung"thest'riking bell 10 which may advant-ageousl "be'sur- I hour hands. -Below be varidas desired.-' 90,

ploy in these the; latter having considerable lost motion y the with the samefreedom until it again strikes the shoulder 12. This arrangement accomplishes two things in that itgives a good sharp clean stroke, and'at the same time a long stroke of the clapper, with a short stroke and small air gap for the armature. I preferably outline the bell 10 and may outline the chimes 11, by means of fixed electric lamps, which I show mounted on a wire network or frame hung over the bell in order to relieve the lamps of-the destructive effects of vibration when the bell is struck. This frame may be of any suitable material, and may take the place of the bell entirely, the latter being placed elsewhere in the structure as desired.

The operation of the pendulum and the production of its return swinging effect on the eye requires no detailed explanation. In Fig. 2, however, I have shown a balance wheel substituted for the pendulum, the operation of which should be explained. This wheel is outlined by a number of lamps, the center one of which numbered 13, burns steadily, being preferably fed from the same leads as the fixed hour lamps 3. Around the periphery of the balance wheel are two sets of lamps 14 and 15, while there are two cross bars with lamps 14: and 15 respectively. The lamps 14 and 14* are fed throughone wire lead and the other set 15 and 15 are fed through another wire lead, both sets being on .a common return on the other side. In order to produce the effect of oscillation the controlling commutator cuts in one set after the other very rapidly, preferably twice a second, being driven in synchronism with the seconds commutator lighting one lamp per second, ex-

.. wire jor each group mon returns for the corresponding lamps in As the tinguishing the preceding one at each step. Each time the balance wheel completes an oscillation, the position of the lighted seconds lamp is advanced one point the lamp in the old position being extinguished as the lamp in the new position is lighted, thus producing a' very striking effect of mechanical movement, and so on, while at the end of each minute the lam then burning goes out and the next one hghts, this being repeated for hours in due course. Similarly, portions of the clock train are represented at right and left of the balance wheel. It goes without saying that the striking and chime bells of Fig. 1 may be applied to the balance wheel clock as well as to the pendulum clock.

Turning now to the circuits, Fi s3 and 4 represent the connections for the ours and minutes or seconds lamps respectively. Of the hours lamps there are twelve or more, arranged in groups, with a common return on one side, and'comall the groups on the other side.

clockdriven-commutator travels around, it

cutsin one group after the other and simul- 'sponding lamps. in all the groups. As the commutator advances, it closes the circuit to the successlve groups, and'also to the successive units in each group, so as to maintain chronometric control, also through a number of wires less than that of the lamps. The only difierence between the minutes and seconds connections or commutators lies in the fact that the moving parts of the latter are driven just sixty times as fast asthe I former. In other words, the arm of the seconds commutator must make one complete rotation or cycle of sixty contacts in exactly one minute. Similarly the moving parts of the minutes commutator must make one'complete rotation or cycle of sixty'contacts in one hour, while the moving part of the hours commutator makes one step per hour or one complete rotation in twelve hours. The cominutator which actuates the pendulum in Fig. 1 is represented in Fig. 5, and if this pendulum is to appear to make one com-. plete swing per second, then the moving part of its commutator will make one complete rotation, consisting of three cycles of contacts, in three seconds. This may be arranged, however, in any desired or suitable manner, as the number of contacts and the rate of pro ession of each commutator is entirely arbitrary provided the'proper relative speeds are maintained, and provided also that fundamental synchronism of the lamps with the time movement is maintained.

It is unnecessary to give a detailed description of the circuits of Figs. 3 and 4 herein, as they arealready fully and particularly described in my previous patent above referred to.

Thus far I have described my clock as a unit, having a single face or dial. In my prior patent aforesaid I have described and claimed a system in which a number of these clocks are fed and cont-rolled over the same, cable. This principle-may be well applied in the present case. Thus, a frame work representing a tower will be erected, with' several faces, upon each of which an aggregation of lamps will be mounted similar to that 1n Fig. 1. If bells or chimes are employed they may be hung within the tower WhlCll will also be outlined with electric lamps in a manner wellunderstood in the art electromagnetic indicating devices for lamps and other changes-will readily occur to those skilled in the art.

It is to be understood of course that the commutator elements or other equivalent represented in Figs. 3, 4, 5, 6 and 7 are all driven or controlled by the same master clock. I prefer to mount these in lieu of hands in the ordinary way, but where the current to be handled is considerable and the parts therefore heavy, they may be power driven and simply controlled by the clock. This is a detail which does not afiect the character and scope of the invention and therefore need not be described. The clock mechanism is indicated in the figures mentioned by the letters M C which are supposed to designate the same mechanism throughout.

Fig. 7 shows the connections of the striking mechanism, and indicates the related connections of the chiming mechanism. The striking is thus controlled: A drum 20 carries teeth upon its surface intwelve sets, the first set having a single tooth, the sec ond set two teeth, and so on up to twelve.

Held upon a frame over the zones of theteeth are twelve pairs of contact springs indicated by the numeral 21-. The lower springs are all tied together, and connected by wire 22 to the striking magnet of the hour. bell 10. The upper springs are individually connected to the twelve. contacts indicated by numeral 23, these being connected by the brush 24 to the generator ring 25, in succession, as the arm. 26 is driven around the circle. An additionalset offcon .tacts 27 are'all wired together andconnected by. conductor 28 to the controllin -magnet .29, provided. with an 'escapementf fluent-30 engaging back and front'pinsflSl and '32-on: a disk. 33 rigidly -secured upon the. shaft-of the drum 20. At the other end of the drum any suitable motor mechanism is connected, shown as a cord'and weight. ln'operatlon,

when the brush 2,4 bridges the contacts ofa particular hour, the magnet 29 becomes energized, and releases the drum so it can. makeone complete rotation; the brush at the same time connects the proper contacts in-circuit with the gong striker, so that contacts connectedto'all the springs.

a number of impulses are transmitted to the latter properly corresponding to the hour. Instead of this magnet receiving the impulsesdirectly as indicated in the diagram, a relay may of coursebe employed, which however is not illustrated, because it is an obvious expedient. In such case the relay would receive the impulses from the drum and in response thereto would open and close the circuit of the gong striker. The drum can only make one complete rotation, because as long as the magnet 29 remains energized, the outer limb of its escapement detent 30 will be in position to engage the pin 32 as shows'in Fig. 7 and when it again becomes deenergized, the inner limb will come into position to engage the pin 31. These pins are staggered as indicated in Fig. 8, so that should the drum rotate until the pin .32 engages, subsequent deenergization of the magnet will catch the pin 31 and hold it without permitting-any further rotation until the next succeeding energi'zation of the magnet. As a matter of fact this magnet only remains energized while the brush 24; is traveling over the contacts.

For the chime mechanism I employ an extension of the striking drum, having teeth arbitrarily varranged'upon its surface, to

open and close the chime springs in any de-- sired order. Assuming that we have eight bells in the chime, I provide correspond. ingly eight pairs of springs, and arrange the teeth on the drum in eightcircles so that in one complete rotation thereof all the springs will be Worked in succession or together, to produce the desired melody. To control these, special chime contacts are placed on the commutator, either on the minutes diskshown in Fig. 4, or preferably .on a special ring of their own, as shown inFig- 7 connected with the-masterclock M C. Chimes are usually rung onthe quarters, and I will assume that for the first quarter three hells will be rung, 0nd four bells, for the third six, and for the for the sec-- houreight; -Four relays are provided,

markedin Fig. 7 respectively No. 1, No.2, I

No. 3' and. No.4, the first having three contacts. connected to the first three" springs only, thesecond having four contacts connected tofthe first four-springs, the third havi n'g -six' contacts connected to. the first and the fourth havlngeight' six springs, h

two more to two'rel'ays, and twomore be actuated at each quarter, and if separate from. the 1 striking drum. must have its own magnet 29 and-other controlling parts. As lg is shown. in Fig.--7"connected to-the striking drum, the single magnet 29 sufiices for both. This magnet must receive current from the starting contact at each quarter, through the wire 290. The arm 26 makes one complete rotation per hour and its brush 24 in that time passes over the four'pairs of contacts 35,-36, 37,-38, 39-40, and 41-42,

' bridging each pair with the ring 43, which is connected to a battery or generator through the wire 44. The contact 36 is connected to relay N051, 38 to relay No. 2, 40

to relay N o. 3, and 42 to relay N0. 4, while the contacts 35, 37, 39 and 41 are all wired together and connected to the magnet 29 through the wire 290. It will be understood that the arm 26 makes one complete rotation while the arm 26 is making one-twelfth of a rotation, or the distance between two sets of hour contacts. On the first quarter number 1 relay is pulled up, the chime drum makes one rotation, and the first four bells are rung, since no others are connected. On the second quarter number 2 relay is pulled up, the others remaining denergized, and.

slX chime springs with their Sl-X connected bells are brought into circuit to receive predetermined impulses from thedrum. lVith the third quarter number 3 relay is correspondingly pulled up cutting in eight bells, and on the fourth quarter or on the hour number 4 relay is pulled up cutting in the entire ten bells and giving the full chime as the drum rotates. This would be followed by the rotation of the striking drum, if separate, or where the striking and the chime drums are made as shown in Fig. 7 in one long drum, the striking teeth are arranged upon its surface so that they come after all the chime teeth are passed, in order of rotation. It may be added that the hour will not be struck on any quarter except the last,v because that is the only time when the brush 24 of the striking arm finds a contact through which to transmit the strik- 'ing impulses. On the hour, however, whether the drums be made one or separate, the chimes are sounded firston the bells 11, and then follow the strokes indicating the hour on the bell 10. I believe that this use of adrum mechanism, with controlling relays as described, is original with me, but as it can be used with any form of clock, electrical or mechanical, in which the starting and selecting contacts are provided at the proper intervals, I have claimedit in a divisional application filed April 30, 1910, Serial No. 558,622.

An'important feature of my chime arrangement is that instead of having the va-' nous springs of the chime drum connected .only to individual chime bells, they can also be connected to other pieces or groups of mechanism, electric lights and the like arranged in the form of any suitable figures so as to produce any desired efi'ects tat recurring and stated intervals. Thus for exfor producing advertising effects at stated intervals during the operation of the clock. This is illustrated in Fig. Gshowing the connections to the group oflamps representing the scape wheel governor and the connection of the display group therewith. A

It should be understood that the number of lamps or indicating devices in any group may be increased, diminished or varied in arrangement as desired without departing from the invention thus the hour, minute,

and second lamps may be multiplied to represent completc hands or pointers in different radial positions, instead of using single lamps; the outlines of the hours may be Arabic or Roman numerals, and the pendulum or balance wheel may be composed of many lamps instead of the few shown. The circuits remain the same for such modifications, as one or more lamps may be lighted from the same wire, simultaneously. Fig. 13 shows a clock face with a multiplied number of lamps spaced and arranged so as to represent the complete hour and minute hands, and the end of the seconds hand.

In connection with the striln'ng of the hour or the chimes at recurring intervals, I also contemplate including the lamps which illuminate or outline the hell, or bells, (which lamps may be attached to or associated with the chime bells as well as the hour bell) in the same circuits as the magnet strikers of the respective bells. If relays are employed between the drums and the bell strikers, these relays will have one or more sets of contacts for their respective strikers, and other contacts in circuit with the corresponding lamps. The windings of the relays taking energizing current from the drum contacts will then close the local striker and lamp circuits simultaneously. These lamps may .have in their circuits, or the relays may have separate contacts for, groups of advertising or display lamps which will thus-be flashed when the bells ring. This is clearly indicated in Fig. 15. Such an arrangement is indicated in the detail F 14. It should also be noted that the use of the pendulum figure and the use of the balance wheel figure can be combined to advantage, and in Fig. 2 I have shown several wheels, which are supposed to be all connected in the circuit of Fig. 6 soas to produce the appearance of wheels turning in the clock. By combining the pendulum of Fig. 1 with these, the balance Wheel would represent the scape wheel of a pendulum clock, without other change.

In exposed positions, or where no magnets or gong strikers are desired in proximity to the lamps, the striking and chime bells maybe hung below. or away from the clock dials, leaving only the wire cages with their lamp outlines of the bells, which being flashed when the latter are sounded, will localize the sound by suggestion from the eye. Such an arrangement is indicated in detail Fig. 14, also.

Fig. 12 shows the commutators as a series of disks. These may be combined to form a drum or may be otherwise arranged if desired: a

In the drawings herewith, current is shown as supplied from generators, one of which is indicated in each of Figs. 3, 4,5, 6 and '7. It is to be understood that I am not restricted to any particular type of generator, but may resort to any well known commercial means of supplying current to the several sections of the commutator, such as direct or alternating current generators, batteries, or the secondary windings of transformers which may replace the several generators inthe figures mentioned, their primaries being connected to a common supply circuit carrying alternating current, in a well understood manner.

With the foregoing knowledge of my invention, it will be readily understood that the synchronical relation between the operation of the various time indicating elements, and the governing, striking, and display elements of the system of my invention glves to the system particular value as an advertising agency. The substantial coincidence of display by the several elements mentioned or any pair of them, gives emphasis, .which as between any two elements is reciprocal.

While I have shown and described the best embodiment of my invention now known to me, it is of course obvious that this invention like all others is capable of being given many embodiments by those skilled in the art without departing in any wise from its generic spirit. I desire to cover all such modifications in the annexed claims. In these claims I have freely used the terms synchronous and synchronical, but I desire to have it understood that such terms comprehend not absolute synchronism only,

6 but also all substantial synchronism of the ele'irients{set iorth Iresulting in the same effect."I' have"a s'o used the termfcommensuratelyi, as respects the relation of the periods of operation of several of the elements of the system. The hercinbefore set resent the movingpart of a clock mechanism, circuit wires leading to the several Visual devices on the frame, and means for actuating the first mentioned indicating devices aroundthe circular figure to indicate different divisions of time, and also for producing the effect of movement by actuating the auxiliary devices. in recurring periods and apparently in synchronism with the indication of said visual indicating devices, whereby the indication of the latterappears to be produced by virtue of the movement of the former.

2. A clock system comprising a frame or support, fixed electric lamps mountedin a circular figure thereon to represent divisions of time, auxiliary lamps mounted on the frame in groups arranged to represent the moving part of a clock mechanism, circuit wires leading to the several lamps on the frame, a source of current, a master clock, and-meanscontrolled by said clock for supplying current from said source to the circular'series of lamps so as to indicate the time continuously, and to synchronously supply current to the groups of lamps at recurring intervals whereby the indications of said circle of lampsappear to be produced by virtue of movement of the represented part of the clock mechanism.

3. A clock system comprising a frame or support carrying electric lights in circular series indicating divisions of time, a plurality of groups of auxiliary lamps arranged on the frame to represent a moving part of a clock mechanism at different pointsin its swing, a source of current for the lamps,

switching means adapted to cut in the time 7 indicating lamps in succession around the frame, and associated switching means constantly actuated in synchronism with the first mentioned switc ing means to light the different groups of auxiliary lamps successively in periodic relation with the cutting in of the time indicating lamps, whereby the cutting in of said lamps appears to I be produced by virtue of the movement of the represented part of the clock mechanlsm.

4. A clock system comprising a frame or I support, electric lamps fixed thereon in a circular series to represent hours, minutes controlled commutating device for connect ing the same so as to light the hours lamps, the minutes lamps and the seconds lamps at proper intervals, maintaining each lamp or group of lamps lighted for only the ,interval which it represents, and then extinguishing it when lighting the next, and a plural ity-of groups of auxiliary lamps representing a periodically moving governin element, with a controlling switching evice therefor, means to operate said switching and commutating devices, so as to produce the appearance of direct governing relation of said governing element to'said time indicating lamps.

5. A clock system comprising hour, minutes and seconds lamps. arranged in a circular series around a support, a. plurality of connected groups of lamps arranged to govermng the escape mechanism thereof, means for lighting the seconds lamps at successive seconds intervals, and associated means for lighting and extinguishing the on s of auxiliary lam s in periodic rela iion with the lighting 0 the seconds lamps aforesaid whereby the lighting of the seconds lamps appears to take place by virtue of control exercised by the represented. moving part of the clock. i V

. 6. A clock system comprising a frame or support, a ser ies of electric lamps arranged thereon to indicate divisions of time, asource of current, circuit wires, a clock controlled cognmutating means supplying current from sud source through said wires to said lamps mchronological order, auxiliary lamps 1n grou representing dilferent positions of a. v1 ratlng governor for the clockmove- 7 no y operated commutating means 'such lighted time indicating lamps.

7. A clock system comprisinga frame or,

support, a dialthereon, groups of electric lamps carried on said dial in circular ar- Vrangementto represent divisions of time, an

auxiliary group of lamps carried on said 7 frame, associated with said dial, 'andoutllnlng the form of a hell, :1. source of our-- rent, clock controlled commutating means for supplying current therefrom to the groups of lumps on the dial in proper chronological order, a hell, an electromagnetic striker therefor, means associated with said commutating means to energize said striker,

and contacts in the circuit of the auxiliary group of lamps,"closed simultaneously with the striking of the bell, whereby predeter 5 mined divisions of time are specially visual "1116515121, and connections therefrom to synchroized by the main and auxiliary groupsof lamps on the frame and dial, acting in con-.

junction, synchronously with the striking of the hell.

8. A clock system comprising a frame or support, a plurality of dials thereon, groups of electric lamps'carried on each dial incircular arrangement to represent divisions of time, an auxiliary said frame and out inin vthe form of a, bell, the arrangement of the dials and said auxiliary group of lamps being such as to sug-' gest a bell within a tower, a source of current, clock controlled commutating means for sup lying current therefrom to the correspon ing lamps on the different dials simultaneously and in roper chronological order, and meansassoclated with said commututing means. to supply current from the source'to said auxiliary grou predetermined divisions of time, whereby the indications of such divisions 'are specially visualized.

9. An electric clock system com rising a frame or support, clock controlle 'ele'ctric lights carried thereon to indicate time, a source-of current, connections threfrom to the time indicating lamps, a group of auxiliary lamps also carried on the support and associated with the time indicating lamps,

commutatin synchronously controlled group of lamps carried on v of lamps at means connected to the "source and to said auxiliary lamps, and adapted to flash the said lamps a determinate n mber-of times for each recurring interva v-whereby the hours or fractions thereof will receive spccial visualization by the main and auxiliary lamps acting in conjunction.

10. A clock system comprisinga frame or support, fix'edelectric lamps thereon in series representing divisions of time, auxiliary lamps representing a scape wheel governor in different positions, an electromagnetically actuated striking device, a source of current, and a clock controlled commutating meansgoverning all of said lamps and said striking device, and arranged to;

light the fixed and the auxiliary lamps and actuatev the striking device in synchronicalrelation, whereby the fixed electric lamps appear to'he lighted b'yreason of the apparent oscillations of the represented scape wheel governor, and the striking device appears to be actuated by reason of the lighting of, the fixed electriclamps.

11." Aclock system comprising a supporting frame with groups of .electric lamps fixed thereon and arranged to represent the hands of a mechanical clockin various indicating positions, additional groups of electric lamps thereon arranged to represent a moving part of the clock mechanism in various positions, commutating means with a master clock controlling the same, and circuit connections between the commutating v clock, switching means governed thereby,

means and the lamps, wherebythe lamps of the different groups are lighted in chronological order and in synchronical relation.

12. A clock system comprising a support, electric lamps fixed thereon in figures representing the moving parts of a clock, auxiliary lamps also fixed thereon in figures to represent chimes or striking means, other auxiliary lamps associated therewith for special signal or display purposes, a master circuit connections from said switching 'means to the time indicating lamps, circuit connections from the switching means to the auxiliary and display lamps, said switching means adapted to close the time indicating, auxiliary, and display circuits in chronological order and at commensurately related intervals, whereby the lighting of the dislay lamps is at intervals emphasized by the ighting of-the auxiliary and chime lamps, and both auxiliary and chime lamps einphasize the indications of the time indicating lamps.

13. A clock system comprising a support, means carried thereon to indicate the time of day, electric lights fixed thereon to represent the moving mechanical parts of a clock, auxiliary lamps also fixed thereon for display purposes, a master clock, switching means governed by said clock, and circuit connections from said switching means 'to the fixed and the auxiliary lamps, and arranged to light said fixed and the auxiliary lamps in chronological order and at periods commensurately related to each other and to the indications of the time indicating means.

14. A clock system comprising a support, a set of'electric lamps arranged thereon to indicate divisions of time, an auxiliary set of lamps arranged thereon and outlining the figure of a bell, a master clock, commutating means driven thereby and connections from the commutating means to the time indicatin and auxiliary lamps arranged to light t e lamps of the first set in chronological order and simultaneously light lamps of both sets at determinate periods, whereby the striking of the bell is visualized si multa-neously with the indication of deter minate periods of time and appears to take place by virtue of control exercised by the time indicating devices.

15. A clock system comprising a support, electric lamps fixed thereon to indicate the various divisions of time, auxiliary lamps arranged thereon for display, a master clock,

commutating means controlled in its movements thereby, and circuit connectionsfrom the same to the time indicating and auxiliary lamps arranged to efl'ectthc lighting of the same in the same chronological order, the time indicating lamps in succession to indicate passage of time and the display lamps "cause the illumination of said time indicat 'ing lamps in succession indicating the time of day and to operate said striking mechanism at intervals simultaneously with the. said time indicating lamps.

17. 'A clock system comp-r1sing a support, I

electric lights fixed thereon to represent a moving part of the clock mechanism in several of its positions, said-lamps being arranged in corresponding groups, an additional group of electric lamps arranged to represent a striking bell in out-line, a master clock with switching means governed thereby, and circuit connections from the same to the aforementioned groups of lamps arranged to effect simultaneous illumination of the same at predetermined times of day, and additionally to effect successive lighting of the lamps of the first named groups at shorter intervals than the intervals of simultaneous lighting of the lamps of all the groups.

18. A clock system comprising a support,

electric lights fixed thereon in groups representing several positions of a moving part of a clock mechanism, a master clock, time announcing devices controlled thereby and switching means connected with said groups of electric lamps and operated by said clock synchronously with said time announcing mechanism whereby the announcement of the time appears to take place by virtue of control of the announcing mechanism by the represented moving part of the clock.

19. A clock system comprising a support, time indicating means carried on said support, striking mechanism, a master clock controlling said time indicating means and additionally said striking mechanism to strike audibly the hours of the day, and an electric lamp on said support having'a local circuit, a source of power, and switching means in said local circuit operated by said clock mechanism synchronously with the striking of the hours of the day, whereby said lamp is flashed to visualize the striking of the hour independently of variations in said source of power.

20. A clock system comprising a support,

' the striking of the hour of the day by said an hour striking mechanism, a master clock strokes of the hnur and the illumination of 1') controlling the same to strike audibly the the display lamps is unmistakable/ time of day, electric lamps arranged on said In testimony whereof I afiix my signature support for display purposes, a source of in presence of two witnesses.

current and commutating means controlled by said master clock adapted to connect said EDWARD CLEMENT source with said lamps synchronously with WNitnesses:


mechanism whereby the coincidence of the JAMES H.. MARK.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2708337 *Nov 1, 1950May 17, 1955Schulmerich Electronics IncMusical instrument
US3003305 *Jul 10, 1958Oct 10, 1961Sylvania Electric ProdClock
US3576364 *May 20, 1969Apr 27, 1971Rca CorpColor advertising display employing liquid crystal
US4041692 *Jan 8, 1976Aug 16, 1977Amelect IncorporatedElectronic clock having time indicating light display
US4400092 *Jun 12, 1981Aug 23, 1983Centre Electronique Horloger SaAnalogue and digital display
US20040062150 *Sep 30, 2002Apr 1, 2004John NevilleElectronic light clock
U.S. Classification368/240, 345/73, 74/569, 368/273, 968/946
International ClassificationG04G9/04
Cooperative ClassificationG04G9/04
European ClassificationG04G9/04