US813836A - Shadow-clock. - Google Patents

Description

PATENTED FEB. 27, 1906.

R. B. SMITH.

SHADOW CLOCK.

APPLICATION FILED uns. 1905.

No. 813,836. PATENTED FEB. 27, 1906. R. B. SMITH.

SHADOW CLOCK.

APPLICATION rum APR. s, 1905.

3 SHEETS-SHEET 2.

il v unnlullm-llllllllrm kvm No. 813,836. vPA'IENTED FEB.A27, 1906.

R. B. SMITH.

SHADOW CLOCK.

APPLICATION FILED APB. 3, 1905.

3 SHEETS-SHEET 3.

.1. vim?,

ATTRNEYS elevation, of the. hand-operating mechanism.'

.8 shows a central section through another v transparent Xork, .borougi of Manhattan, in the county 'binations hereinafter described and more front elevation ofthe `mec anism for inter- UNITED STATES n PATENT oFEioE.

Specicat'ion of Letters Patent.l

Application ined iprii 3,1905. ksapin No. 253,796.

To all wh/om it may concern.-

, Be it known that I, RICHARD BARTHoLo- MEW SMITH, a subject of the King of Great Britain, and a resident ofthe city of New and State of ew York, have invented a new and Improved Shadow-Clock, of which the following is a full, elear,`and exact description. i

My invention relates to clocks in which the shadow of the moving hands is vcast upon sine surface, it being especially applicable to the display of advertisements.

It consists in the various features and comparticularly claimed. v

A Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures. i

Figure 1 illustrates one a plication of my invention. Fig. 2 is a centra section through one embodiment of my improved mechanism. Fig. 3l is a section taken on the line 3 3' of Fig.2. Fig. 4 isan enlarged detail,in front Fig. 5' is a transverse section therethrough on the line 5 5 of Fig. 4. Fi 6 is a detail in mittently moving the multi le dial. Fi Y. 7 is a transverse section theretiirough, and ig.

form of my invention.

In a suitable casing 10 is mounted clock mechanism A, which in Figs. 2 to 7 of the drawings isy shown as com risinga goingtrain a and a striking-train Divi' ling thel casing' into two sections is a partition 11, through which is an opening-containing) a panel or member '12, prefera ly of glass, at the center of which is set a spindle 13. Aboutithis spindle are rotatably mounted transparent members 14 and 15, each provided with a toothed rim 16, which meshes with gears 17 and 18 upon the minute-spindle and hour-sleeve, res ectively, of the going-train. Carried by t e members 14and 15, they being preferably painted upon the glass, are opaque hour and minute hands 19.

Mounted in the partition 1 1 and projecting from one side thereof is a s indle 20, upon which may rotate. a whee or supporting `transparent members an `havin member 21, having a circular series of openings in which are set transparent dials 22,. About each of these dials is a series of charac- Patented Feb. 2'7, 1906.

ters 23, each corresponding in position and? number to the hour-numerals of the ordinary clock and preferably forming different combinations ofwords constituting advertising matten` Upon each dial, between the hour characters, may be located the usual minutedivisions, while within these circumferential characters may be placed appropriate advertising phrases. A pinion 24 of the' strikingtrain engages teeth upon the rim of the wheel 21, and rotating with the train is included anotched locking-plate 25 and the usual ily 26, having projecting from it alocking-pin 427.. Fulcrumed adjacent to this portion of the striking-train is a locking-lever 28, having projections 29 and 30, which may'r respectively engage the notch in the plate 25 and `the pin 27. With the opposite extremity of the ocking-lever coperates a lever 31, movable in a plane substantially at right angles tothe plane of movement of the locking-lever and having 'a fork which receives the outer extremity of an operating-lever 32. The inner endA of this operating-lever may contact with a series of pins situated about the periphery of a gear 33 of the strikingtrain. he springs of the going and striking trains being Wound, the hands are advanced over the dial, which is in registration with the opening through the partition 11 to indicate the time in the usual manner.v At predetermined'intervals, d,e ending upon the spacing of the ins upont e gear 33, the strikingtrain wi l be released through the movement ,of the lever system, securing an automatic has just been described means are provided for casting a shadow of the hands and dial .characters upon a screen or other surface.

For this purpose I have shown a source of light consisting of an incandescent lamp 34, situated within the casin at one side of the between it and said members a condensingens 35. alinement with the lamp, lens and transparent members extending from an opening in the'side of the casing is a tube 36, containing In-A IOO

a suitable projecting lens or vsystem V37. The

' circuit being closed, the light from the incanous displa d rzo descent lamp passes through the lens 35 and the transparent members 14 and 15 and the articular dial which is opposite these memliers and is thrown by the lens 37 upon the receiving-surface in a luminous circle. The o aque hands, dial characters, and inscriptlon cutoff the light-rays, causing a shadow of these elements to be cast Within the circle. It should, be noted that the transparent hand and dial members, together with the lamp and lenses, are all at one side of the opa ue elements of the clock mechanism, so t at there is nothing to break the sliadow \to be cast. This not only furnishes a convenient means for telling time, but also a conspicufor advertisements. As illustrated in 1, the casing (indicated at X)v is supporte above a door by a bracket Y. The shadow-clock is thus cast upon the sidewalk in front of the door at Z, where it may be seen and the advertisement read by passers-b It 5will be apparent that the feature of the multiple dial may be dis ensed with, and in Fig. 8 of the drawings I ave shown a more Simple and compact arrangement of my apparatus, which 1s adapted for domestic use or as a night-clock, the shadow being cast y* upon the wall of a receiving-screen. `Here the partition 11 isomitted, and the trans arent panel 12 `furnishes a support for the c ara'cters, and therefore constitutes the dial, as well as receives the s indle 13. The strikingtrain is absent, and or the spur- gears 17 and 18,`driven by the oing-train, are substituted bevel-gears 38 and 39, which mesh with liketoothed rims 40 upon the peripheriesof the members 14 and 15.- Otherwise the apparatus may be in a eneral Way similar to that previously descriIJed and used in the same manner, save that it willusually be convenient to maintain the lamp-circuit normally open and provideal switch by which it maybe closed to allow an observation of the time.

,on sai member of the going-train, an intermediate lever operativelyrelated to the afore-` said levers, condensing and projectin lenses, a source of light, trans arent time-in icating means intermediate o said lenses and actuated by the going-train, and a amel-carrier operatlng between the lenses an operated atVx intervals by the second-named train.

2. In an apparatus of the class described condensing and projecting lenses, a source oi l light, aotary toothed panel-carrier equipped ity of transparent panels and ar" with a plura ranged to (present said panels vsuccessivey between sai lenses, transparent time-in icating disks operating between the lenses, a going-train adapted to operate said disks, said traint including a member provided with studs, an o rating-lever actuated by said studs, anot er tram geared to th'e toothed panel-carrier, said last-mentioned tram 1ncluding a locking-disk and a fly, a locking-lever havin two members arranged to e respective with said locking-disk an t e fly of the fast-mentioned train, and a lever intermediate of the operating and locking levers for releasing the train to operate the panel-carrier at intervals.

In testimony whereof I have signed myname to this. specification in the presence of two 'subscribing witnesses.

I l aleman Bmraotolaw smal Witnesses:.

F. C. BEACH, JNO. M. Rrrrna.

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