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Publication numberUS428852 A
Publication typeGrant
Publication dateMay 27, 1890
Publication numberUS 428852 A, US 428852A, US-A-428852, US428852 A, US428852A
InventorsCharles F. Myers
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 428852 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

5 Sheets-Sheet 1.

(Model.) 7

0.,1. MYERS.

, 7 TIME 1100K. v

No. 428,852. Eatented May 27,1890.

' N VE maria-5 E @62 8 A fro/mars 5 Sheets-Sheet 2.


Patented May 27, 1890.

//v VEN TOR (ZarZss F J g 67's 5 y I k lg A TTOfi/VE rs I 5 Sheets-Sheet a.


TIME LOCK. No. 428,852. Patentd May 27, 1 90,

(-Model.) p 5 Sheets-Sheet 4,

' 01 1". MYERS. TIME LOOK.

Patented May 27, 1890.

(ModeL) 5 Shets-Sheet 5.-

0. F. MYERS.


No. 428,852. Patented May 27, 1890.

v. m 555s v v //v VEN'TCH Czav'zes Z. 67-6.

A'TTOHNE Y8 plate.




SPECIFICATION forming part of Letters Patent No. 428,852,da.ted May 27, 1890.

Application filed September 16, 1889. I Serial No. 324,1{27- (Model) To all whom it nmy concern:

Be it known that I, CHARLES F. Mvnns, of

McKinstrys Mills, in the county of (.arroll and State oi Maryland, have invented a new and useful Improvement in 'lime-Locks, of which the Following is a specification.

The general objects of my invention are to provide a time-lock for the doors of sates, vaults, and strong rooms, which shall preclude the opening of the door at all times except ,during the intervals for which it may be set to open.

The specific objects are to provide for the accidental derangement of the time mechanism by providing two sets of mechanism operating in unison or independentlyofeach other, to provide for the automatic unlocking of the time mechanism when from oversight or accident it may be allowed to run down, and to provide for the automatic unlockingot'thet-ime mechanism in the eventof the breaking of the nminspring or other operative part of the time mechanism.

My invention consists in the peculiar construction and arrangement of the various parts or the timolock, which I will now promecln'mism on an enlarged scale and in the locked position. Fig. 3) is a front view of the same. l igl';t is a front. viewol. the samewith the front frame-plate removed. Fig. 5 is a vertical section through lines .r :1 of liigs. 3, and 4. Fig. 6 is a horizontal section through lines 1 1 of the same figures. Figs. '7 and 8 are details.

Referring to Fig. 1, Z represents the boltworlgwhieh is arranged in the door as usual, and is thrown forward to lock the door or drawn back to opcn'it by means of a knob on handle, in the usual way. L is my time-lock, which has at its upper end a horizontally-arranged locking-bar 1;, sliding in guides or keepers l3 3 on the fran1'(-3 v a pivoted or jointed locking-latch B Which' is provided with a lug or right-angular extension B near its end, which is arranged to, drop through a stable or recess in the bolt This locking-bar has at its outer end work. \Vhen this bolt-work is projected to the right to lock the safe door, and the locking-bar is also projected to the right and locked by the time mechanism, and the pivoted looking-latch l is in its horizontalposition, with its lug dropped through the staple of the bolt-work, it will be seen that it ,is absolutelyimpossible to throw back the boltwork until the bar 13 is released by the time mechanism.

The object of the pivoted latch B is to permit the locking-bar to be disconnected from the bolt-work when it isdesired to do so, and for which purpose the locking-latch is raised out of the staple of the bolt-work. A pin 1; serves to hold the locking-latch against rising when the bolt-work and latch are connected, and when the parts are to be disconnected the pin is withdrawn and thelatch raised and pin reinserted just beneath the latch, so as to hold the latch in elevated position, as in dotted lines, Fig. 1.

I will now proceed todcscribc how the loci ing-bar l3 islocked and unlocked by the time mechanism. On the rear sideot. the frameplate and rigidly attached to the locking-bar 1) (see Fig. 2) there are arranged two horizontal abutment-arms 13" 3", which slide over or abut against the two segmental tumblers 1-3 B, which are pivoted to the back side of the frame-plate. \Vhen these tumblers are in the position shown, the arms B abut against these tumblersandthelocking-bar leannotbewithdrawn, but when the tumblers are turned on their pivots, as shown in dotted lines, the abutmentarms pass freely over thetops of these tumblers and leave the bar 15 free to be withdrawn. Each abutment-arm moves beneath a stationary pin or lug B on the frame-plate, which pin or lug serves to prevent the abutment-ar1n from springing up when locked by the tumbler in case an attempt should be made to force back theloeking-ba-r. it is the oi'iice of the time meehanism to adjust these tumblers so as turn the tumblers out of range of the abutment-arms, and for this purpose each tumbler has a slot 1-3, in which plays a pin a, which is attached to the end of a lever A on the front side of the back plate, and which pin extends at right angles through the same. (See Figs. Land 6.) Eachlever A is fulcrumed upon a common pin a in the middle, and is held up into a parallel position against the locking-bar Bhy a separate coil-spring" o and 0. one end of each of which springs is attached to the fulcrum-pin end the other end to a. stud on the lever. The two levers A A are respectively connected to the cross-heed of a vertical slide 0 C by means of independent linlchars A A which have a slotted connection with said cross-head, so that levers A can move up and down about their common fulcrum Without reference to their connection "to the crosshead of the slide, the object of which will he explained farther along.

A, Fig. 3 and 5, is a protecting, cap,wl1ich is screwed to the fulcrum-pin ot'the levers A for the purpose of covering and protecting the springs (1 The'slide C Cf is made in two parts. The upper part- U hears the cross-head connecting with the links, and in formed with a vertical slot, and is guided in its vertical movement by a stud c, projecting through the clot, and pins 0' e neurite lower end projecting from the hack plot-e. The lower part- 0 of the slide fits in a groove at the lower end of C, (see Fig. 5,) and said lower part of the slide has at its lower end a T-shaped head, coneieting of arms 0 Fig. 1-, projecti n horimentally from opposite sides of the some into renge of engagement with the inainepring or the (310Gl{-lllOVGiilt)1i[S D D, disposed on opposite sides of the central. slide 0 0, These arms c" of the elido are designed to he struck lay-the expandedclock-epring when run down or broken, and furnish the means for automat cally unlocking the time-lock mechaniszn whenever such contingency occurs. The upper section 0 of the slide bears a spring-bar Fig. 5, with a stud a (see Fig. 5) on its inner side, which passes through a hole in the slide C, and is adapted to catch against the end of lower section 0 of the slide. The upper section 0 also carries a vertical ronlz shaft 0, which has (see i and i i a herizonmlly-projecting arm. 0-", extending out- Wardly, and also another horizontally-projeetinc arm 0, which lice beneath the Springduir C and is adapted to pull out the epringimr and take its stud c away from the curl of i h lower section whenever the roclonlmlt is turned from right to left. The arm of Mir rock-shaft is connected ivy a spiral nprinn' i" with the 'l"-hcaded section of the eliilo if, whcrebythe two sections C and oi the slide are held togetherwith an elastic tension. The T-head of this section (i is guided in a vertical slot Figs. 2 and ii, in the haul: pinto. and on lln: ,ili s ide of the hurl: piul (son F e. :3 an! i 5: -onu -rlmi lo .--pirnl .wprn 1.! H, which in :nu-lnuwl .ll lit up lu l lo llil hark plnir. and tin ionsiou, oi 'ii'lll ll nprin r nerves ioliuld lint h the slide-mar ions. (1' Hill] the urnn A A up in flw loolwil poniiion. When eithernniinnpring ln'na e and in; coilii expand, or when either or both coils erininil from running down, said coils strike :ugninnt the arm or arms 0 and force both the lower elidencction U and the upper slide-section (J down together (see dotted lines Fig. 4) against the tension of the spiral spring E on the hack, and the links or pull-bars A A are made to pull down the lovers AA and turn the tumblere out of the way of locking-bar, so that it can. be withdrawn.

I will now proceed to describe how the time mechanism is made to effect the unlocking and resetting, and how it may he set to unloclc at any stated time. F is a central shaft which passes through the slot of the upper .elide-eeetion C and line a. bearingin the front and hook frame-plates. This shaft is rotated by either or both of the time mechanisms; once in forty-eight hours through gears on the rear of the back plate, which will he hereinafter described, and the revolution of. this shaft is mode to lock and unlock the time mechanism and also set it to unlock at any desired time in the following manner: 0n the shaft i? (see Figs. i and 5) is rigidly attached a disk 1 hearing a tripping-tooth d, and also a disk F hearing a tripping-tooth (1 In the place of these dielcn with a single tooth tappet-arms may he used. The disk 11 is rigidly connected to the s11aft,'but for purposes of adjueiuientie mounted upon the inner end of a sleeve (1, which encon'ipansce shaft F. These two dislrs are arranged in a plane to strike with their teeth the horizontal tripping-arm 0 ct EllGd'OCli'Sllilfll C, and the teeth of these disks are arranged at diainetriwily-opposite' sides of the shaft, so that as the shaft revolves once in forty-eight hours the teeth of the two disks will successively strike the tri 'iping-arm c" on co every twcn ty-fou r hon rs, oroncc every day,to opcn ihctime-lock. The shaft F, with these disks, revolves in the direction of the arrow, and when either of the teeth of said disks strili'csihc tripping-arm 11" itturnn the rock-shaft U about its axis, and the other arm. oi. [he roric-l-iliui't (nee Figs. 4; and 5} prom-Jen forward the spring-dial.- (I and pulln its pin 1:" away from the top end of lower Section i." oi the slide, and the upper section 4 oi the Hllllt: l ning; non" irr-c in move down from lt'lll lflll oi the spring (I' and aloe from njruiiiy it drops ilowlinucl through the slotted lining pulln down lovers A A. and opens the loi'lzingr'lntr, as linioro drscrilnwl.

For .iulomniically resetting; the limo-loch, th -:]|n.i'tl hue lmclr oi the slide-section (7 :1- illSli (hrigidlynliached thorctoand provided at diuinoiricallpopposilo points with Wipernius 1 q, which successively strike once in lwoni four hours a stud e on tho rcarsido of tin siliil nn'I again raiuve said elirio to it --.i l li 'l iili'li i to a position where the p n on un on-Inn if drops over the lop Lil l i lvn'rr '-li(ln--si-('-tion i".

To r duce friction, thestud 1. of (he nliile ehnul l have an anti-friction rolloron. itn'horn the wiper-rams bear against it. in this connotation the function of the cloth in the linkharu A and the springs a? of the levers A A IIO may be understood. Their purpose is to permit the time mechanism to reset the tripping devices, even while the locking-bar is unlocked, for when the levers A A are down and the locking-bar is thrown back the slots in the link-barspermittheslidc-section(.7tobe raised by the resetting mechanism to its set position any time in the day. Afterward, when the locking-bar is thrown forward tolock thesafc,

just as soon as the tumblers are freed from the arms of 1 the bar the springs a of the levcrs A A throw up said levers and turn the cntly of the setting devices. v

I will now describe the means for" setting th'ltlllle mechanism to open at any number of hours ahead. For this purpose the shaft F, sleeve (Z, and the two disks F P with their diam etri call y-arran god teeth, maybe regarded as one device moving together. On the front side of the front frame-pla'te-is arranged a dial ll, Fig. 3,0onsisting of forty-eight subdivisions,'each representing an hour. The zeropointocorresponds exactly to the position of the rock-shaft arm c in the rear. The shaft F has also on this dial (see Fig. 5) an index- 'hand f, corresponding in its radial posit-ion to the radial position of the tooth (Z of disk F and the sleeved has also an index-hand f on'the dial, which index-hand f corresponds inits radial position to the radial position of the tooth d of disk F. it will therefore be perceived that the relation of the two indexhands f and f to the zero-point of the dial is an exact'countcrpart of the relation of the tripping-teeth of thctwodisks to the tripping-arm of the rock-shaft. Itbeing remembered'that the index-hands and sh aft-revolve oneeliif forty-eight hours and that there are forty-eight subdivisions on the dial, the index-hand approaching the zero point will mark between it; and the zero-point the number of hours in 'thefntnre from the present time that will have to elapse before the disktooth representing that index-hand will trip the mechanism and open the lock. Thus, if

thepresent time be nine oeloek at night, as indicated by the two time-clocks in Fig. 3, and it is desired .to have the time-lock open at nine oclock next morning, the following is the method of adjustment: The intervening hours being computcdarefonnd to be twgelve.

One of indclt-handsforf (whiehever'is in rear of'tlie twelfth mark, since the hands are aiot adapted to move backward) isturned forward until it rests upon the mark 12, which meansLthat the tooth of the disk in the rear Sunday ore holiday.

is just the sametime distant'from the tripping arm of the rock-shaft, and when the When this extra longrigid gear-wheel 1 larger gear-wheel 1".

time adjustment is to be made, the sleeve (1,

with its diskF and index-hand f, is given an adjustment into perfect coincidence with the disk F and index-hand fi. e., one index-hand is turned directly over the other, which causes the teeth of the two disks to also come into exact coincidence. Now, as the revolution of the shaft is once only in forty-eight hours, it will be seen that the time-lock will be tripped only once in fortyeight honrs,';and maybe set for a forty-eight- .hour interval before opening. tumblers into the locked position independ- For connecting the sleeve (Z and shaft F together so as to revolve as one, theend of theshaft is flattened to receive a similarshaped opening of the index-h an d, (see Fig. 8,)

which meshes with the main gear-wheel on the winding-shaft of the movement. This gear-wheel is rigid on a shaft that on the rear side of the back frame-plate carries a' (See Fig. 2.) This gearwhccl I meshes with a larger gear-wheel 1 which is fast on a sleeve with a small gearwhccl 1. Gear-wheel 1" meshes with another A si-milartrain of gears extends from both clock-movements, and their final wheels I 1 connect with a compound dill'erentiating-wheel J J, which is hung loosely on the shaft F, and through which gears and compound wheel the shaft F is rotated once in forty-eight hours, and


through which also the two clock-movements act in unison to rotate it in the samedirection, tnzcither movement serves to rotate it in case the other becomes inoperative. This compound ditfcrentiating-whcel ismad'eof two 1 of the train from one clock-movement, and the other wheel-section J rests in the plane of the last wheel 1" of the train from the other cloek movement.

Within the chamberformcd by the hollow wheel-sections there is arranged a ratchetwhcel' K, Figs. 2 and 5, which is fasten the shaft F and has forty-eight teeth.

Each wheel-section has within its chamber a pawl Z and Z, which are respcctivel y forced by springs in m" into engagement with. the ratchet-wheel K. Now, when both wheel-sections of the compound wheel are turned in the same direction both pawls engage the ratchetwheel and turn in unison the shaft F; but it one clock-movement becomesinopcrative that does not lock or interfere with the rotation of shaft/F, but the wheel-section of that inoperative side simply'stands still and its One of these whecl- Lil pawl draga nvvr the ri-nt-h l-irwlii. fvllllt, tin: other active \flllllfl-fitft'llt ll, with it pant. acting nponantl tnrni; tlw ahal't l. in Elmway a sat'vgnartl is prii nlwl in) :urhl nl in one of the nnivonnrnts anti a.-:.-;nrain:r i rvnderail (lunhly snrir.

In OltlOl t0 ant tin; tripping- :lurirun nt' tin Slide t h hamha l'lHtl (nr mil) with a has or pull-lin0h IlSt'tlIliltjClllltt)lll(*l1)\\llfill ll' neotion (7" and, tXlOHtlr tln'tnnzfl: tln: inchmin rcase into was) access. lly lllillilltf thin-n thin k110i) the luwvr snot inn ml the Hlltlt la hronght down fllltl is vanght lnnwath tin, stall at tho, Spring-harm: tlm nppt-rslhie-ne tint: want thr devices.

In adjusting the size ml tin: it'tilbttlwt'lr in the ()lOt'ltI-IHOYOYHQIIt5 anti tin: tllr lillith ln-- tween the arms 0f the "l-xhapvzl filltlllitll l thv mainsprings, this in so mgrnlatml that, tin (techanm'mntant will Htrilw thu arms nl' tlnl T-hoatl at: the t-xpiratinn 0t sa-wnly twn hours instvatl ()l' the full tinn l'ur which tlnr movementis tlcaignml tn rnn, lliltl, lay thin means the (:hit'k lllCCllltl'll-jill will alwajr; in: actuated by the first part 0!" the tunninn til tin lnainspring and will not he liahh; to las tinny as it might; through the last, part at 1hr rulaxctl condition of the spriiw.

For int-losing the time mechanism an snitable case may be mnployml. an nlmwn in l i; '1, and this; case is prn'ritltul with lioitin in .2 (with rnhhtn' 'illlf lltil'rfll and llangmr: tin huh ing it to a heavy vohl-iehillml plate that: aria as a prutwztinn tn the l'rnnt ntf the tinn) inertianism.

A suitable stay. shnnlilter, nrahniinn-nl in provided at the nnrl at the)v inn-t t0 rt" st'ain front a lmclc-thrnst (it the linlt-wtn-h. The case is hinged at .1" to this tlllltLlltMll, anti upcns like a (tear.

In eonstructingthe arms It it they am matte heavy and tlrep from gravity in open tin: inch in cast) the coihssprin; at; their i'nlcrlnn air: way. i nrtlnnmm'e, it the aprin r l hnnlel break, the luck. Will also (ipun, an the: lit-arm tion would, in that came (imp from. ;J,l."ttl

Instead 02". using a T-lllltlll (ill the l Wi'tfl" slidorection t) for the mainapringn l4) strilt'n against; in opening the tinnrh'irlr, harm-n ti li (see Fig. 7) may he pilott-il tn the ram; nn l also to the SlltlO-fi0OlIlUll ti, so an tn ht" actwl upon by the springs.

To provide for the trippingnf this nmrhanism at; an rarlirr or latur pin-lull lay the pansion of the mainsprings of ll? (-hn'h lllC'lll' anism,asnt-scrmv a may li l1)lt(3t3ll in thulntla at the arms of thov T-llt2l(l, (or tho lnvorn nl. Fig. 7,) by turning \Yllll'll sut-ncruws'np or (town Lhn spring in intuit: to ntrilt'vtln-ln man varliur t)! latvr puri ul.

lurking-liar anti armngwt tn l x-har it,

;, Ulltf 0r h-wzr. :nnl than llllllltllllMl! tut inn-rating the wanna, r-nlntantially as nlnmn anti lin- Nlllllll.


ninni may h in in' tlnliwtwn :1 ill mix-h tha tllpping" lllt while the hnrh inphar llltlllililll lll n5 llnlnwhin z lint ll anism,the set mechanism, and the time-movement, of a special dial II, and a trip mechanism for the set mechanism, consistingof a shaft F, operated by the tiine-1novement and bearing a disk with a tripping-tooth, and also an index-hand sustaining the same radial pof sition to the zero-point of the dial as the tripping-tooth does to the set mechanism, substantially as described.

11. '1 ie combination of a dial having fortyeight subdivisions, or subdivisions which are multiples of the hours of a day, a shaft F, having two disks with tripping teeth or arms and corresponding index-hands, one indexhand and toothed disk or arm being made adjust-able with reference to the other toothed disk and index-hand, substantially as shown and described.

12. The combination, in a time-1oek,with a dial'graduated into multiples of twenty-four, of an independent index-hand with a corresponding tripping device {or each multiple of twenty-four, substantially as and for the purpose described.

13. The combination, with the compound slide carrying a spring and a setting device, and means for connecting it to the locking-bolt, as described, of a shaft 1 bearing both a tripping device and a lifting-cam for raising; aud'resetting' the upper-section of the slide, substantially as shown and described.

1 In a time-lock having a double timemovement, the combination, with said timemovement and the tripping devices, of an independent train of gears from each timemovement to the tripping devices, and a compound gem-wheel connecting the time-move ments with the tripping devices for conjoint or independent action, substantially as shown and described.

15. The eompoundwheel consisting, of two hollow loose toothedgears J J, a shaft F, bearing the tripping devices and also a rigid ratchet-wheel within the hollow gears, and spring-pawls connecting the sections of the compound wheel to the ratchet, in combination with the two independent time-movements and the trippingdevices,substantially as shown and described.

CHARLES F. MYERS. Witnesses:


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4875351 *Aug 19, 1988Oct 24, 1989Sargent & Greenleaf, Inc.Electronic time lock
Cooperative ClassificationE05B43/00