US1083580A - Monitor. - Google Patents

Description

H. O. ZENKB.

MONITOR.

' APPLICATION FILED NOV. 12, 1910.

1 083 580 Patented Jan. 6, 1914.

5 SHEETS-SHEET 1.

:IIIII INVENTOR mun,

H. O. ZENKE.

MONITOR.

APPLICATION FILED NOV. 12, 1910.

1 ,083,580. Patented Jan. 6, 1914.

5 SHEETS-SHEET 2.

H. 0. ZENKE."

MONITOR.

APPLICATION FILED 11017.12, 1910.

1,083,580. Patented Jan. 6, 1914,

llllllll WIT/VESSES: mm TOR figawfig ORNEY.

H. O. ZENKE.

MONITOR.

APPLIOATION FILED NOV. 12, 1910.

1,083,580. Patented Jan. 6, 1914.

5 SHEETS-SHEET 4.

' INVENTOR 7III/I/II/ I M C Arron/4H.

H. G. ZENKB.

MONITOR.

APPLICATION FILED NOV. 12, 1910.

1,083,580, Patented Jan. 6, 191 1.

5 SHEETSSHEET 5.

MINN E mmvron it; W1 j B 2 "WM!!! "W! nann -.0. znnxn, irrnnj Mom'rdm.

Specification Letters-Patent: a n u mea November 2, inc. .sen r'rro. 592,093.

. 1'] Patente To' allavko'm it my1QQngem;-; v

Bei it known that/v1, HENRY C...ZENKE,FB.

citizenof the United States, and resident. of

Richmond Hill, in the county of Queens and fitatev-of New. York; have invented certain 1 diflerent operations. This class-of appanass=- tus will have a number of diifelfentapplica-- tions,, .either to machines-in factories: or .to

the operation of engines'in steamships, eleotric generators in. power stations, or manyotherclasses of apparatus which will occur 1-.

to engineers.

It is well :understoodinmodern factories thatnmachines must :be opemted to their. 'maximum 'capacityin order. toget .the' minimumcost of output and'thevlargest: returns npon ,the'-. capital represented. byi zthe machine It often occurs that operatorsof ex--..

ceptional =skill,-:if they will, ar.ecable to turn outa very 'largeiquantity-of ;work. and yet the average output :when; the .machine is. under. their control is less; than that of inferior' operators who devote themselves more: continuouslyrto the. operation fonwhichth'ey are paid. ,-,-Being ,paid for work by=thepiece does not. obviate :5: soldieri ng as it is called; .the skilled o erator'being still-ablegto. earn a a fair wage ecause th'e price of piece-work is set. .for thosepf averageability. I amaware'of newspaper oflices, for examplepand other large printiiiggestablishments awhich; -have twice as many linotype. machines as would be necessary. .forthe purposes-.zofwthm ofiice if the machines were operated at good-1.

' efiiciency atgalltimes; Asuthesemachiiies.

cost several thousand dollars-:-apiece-;-it is @obvious that .a. return on the capital .invested in them;i s.-Qnly:to be expected when they are runv ;-rea sonably near their maximum :ca-. pacity. {1 i I haveinevisedthdapparatusvpresently to described; for use inconneetion-lwiti'r a number of linotype machines, but as lull-ready.

indicated its application maybeiextended j In general theapparatus consists of means for makinga record npon'a chart. having a space devoted 5-t0 each of} zthe several :rna-

' atime or is operated at low speed and eflincleneysothat it does not turn out a reason-- hilies-(emanate. are .supervised .b the.

.monitor, [and l whicha t1me-' connection as made between-some part of eachmachine :supervised which is -capable:

having-5' also ;a space upon record-is kept. An electrical .of. operating a switch, and-anuopera'tingw magnet, and.th1s'- in turn causes or permits-- actuation of a-counting mechanism, preferably= .of the peculiar construction hereinafter described, \which prints upon the chart the amount ofwork done by-making .a mark. for-each operation of thepart controlled by the switch. .In the linotype machines with partis a rocking bar operating the line- .castmg mechanism, for; which may be substituted any' part of'the controlled machine which; is necessarily operated when its func-. tionsare performed; and I prefer to use a switch of peculiar construction, presently to be describedybecause it'can conveniently be completely inclosed so that it cannot be tampered with as well as for other reasons. As the printingof consecutive numbers for eachline is impracticable on account of the vspacee-required upon the chart andlbecause of the difficulty of distinguishing them, I have devised a peculiar consecutive register -which enables me to print a line for each line which; is cast. on the machine and a number: at;-every.tenth line. In this way I am en abled to keep track of each of the machines gc'onneoted: to .the .monitor, and if any ,-of

them=,.ceas.es-to operate for an unreasonable.

able quantityof work, I can at once investig ea .. he accompanying drawings. showan em= boIiiment of my invention. Inthese, Figure 1 lis a -general-=view,-.partly diagrammatic,

partly inside elevation, and with some parts- 1n'isection,-.ofan apparatus constructed ac cording thereto; Fig. .1 is a diagram. showi'ingth'e connection of my apparatus to the lllifidfll'iVBWiShfiffi ofa linotype machine.

F 1g. ;2.is a plan view of the switch shown at )B. in F ig. l,vand Fig. 3 is a section there- .O'fiRPOIl; the line 3-3 of Fig. 2. Fig. .4 is

Qani endelevation. of the ribbon-feeding mech- 'anism. Fig. 5 isa side elevation, partly broken: away, -.ofone of the consecutive registersufFig. 5 isanend elevation of the -sarne parts..- Fig. 6 shows a part of the :ch'artuuponiwhich results. are-recorded. Fig.

which, I have employed. myinvention this 7 is an alternative construction for the operating mechanism of the consecutive registers. Figs. 8 to 14 are details of the peculiar form of consecutive register employed. Fig. 15 is a plan of part of the apparatus, with some parts omitted.

I will describe first the general arrangement of the apparatus shown in Fig. 1, afterward describing it more particu arly m in detail. -Upon the rock-shaft A is secured the switch B by means of the plate A, fast to the switch, and another plate A the two plates being connected by bolts a a which cause them to grip the shaft. Leads 0 0 pass 15 to a battery G and an electro-magnet D, so that when the rock-shaft operates the switch the circuit is momentarily closed and the eiectro-magnet is energized. When this occurs the armatures cl d, carried by the lever 24} D are attracted and the hook D is raises. momentarily, releasing the detent 72. The cam H then drops upon the constantly revolving roller E, it being pivoted at h in the lever H which is pivoted at h the g. spring 7L presses down the lever so that the cam is firmly engaged by the roller E. As the cam, which is eccentrically pivoted, rotates, it raises the right-hand end of the lever H and the left-hand end thereof forces 3{} down the consecutive register L against the ribbon K, so that prints upon the chart i, passing over the platen K The ribbon IQ is fed by the mechanism shown in Fig. a, presently to be described, which is operated by the eccentric F from the shaft of the constantly revolving roller E, the rod F pass-' ing from the eccentric to the ban F and causing the rod F to reciprocate. A number of these mechanisms is assembled as indicated in Fig. 15, one, connected to each machine the work of which is to be recorded by the monitor.

In Fig. 1*, I show the switch B connected to the line-delivery rock-shaft A of a linotype machine, the frame of which is indicated at A the lever A is that of the linedelivery slide. It will be understood that the leads from the terminals 0 c of the switch pass to the battery C and magnet D, as 5 shown in Fig. 1.

' At G is a clock-driven gear which operates the roller G which feeds the ,paper, the latter being pressed against it by the pressure-roller Gt An idler G1 connects the 5- main gear of the clock to the pinion G carrying pins 9 g, cooperating with the escapement lever G: to operate the time-printing mechanism, presently to be described. The operation of the clock is such that one or the other of these pins strikes the lever Gr twelve times in the hour.

Referring now to Figs. 1, 2 and 3, I will describe the construction of the switch which I have devised. It is important that this i switch shall operate without sticking, be-

cause, as will be manifest from Fig. 1, if the switch should stick the lever 13 will be held down and the particular consecutive register which it controls will be operated as often as its cam H revolves. While therc- 7o fore I could employ many forms of switches, and any form will be, so far as the general objects of my invention are concerned, an equivalent structure, I prefer the mercury switch shown, which operates in the manner following: The switch is shown in side clevation in Fig. 1, and is formed of any sui3table substance, though in en 'a to have it of insulating leads 0 c are properly iHSL to such a length that they part of the channel, it is no the material of the switc channels B B cross one nect at each end. A "Jule is poured into one of the c cover B carrying the leads 0 c I. on. When the switch is in the shown in Fig. I, the mercury Y into the position shown in d When the shaft A is reciprocateu cury will run down the channel i: switch is lowered by the rotation. shaft in the direction shown by the arrow;

it will then run over into the low part of the channel 13 at the left in Fig. 2, passing the low part b of the partition between the ,two channels as shown in the upper part of Fig. 3, bridging the contacts a c as it does so. lVhen the shaft raises the switch, the mercury runs down the channel B over the low spot 6 between the two channels, back to the illustrated position. The length of time of the contact may be controlled to the desired extent by the amount of mercury which is used to bridge the terminals and by the pitch of the channels B B but it will be evident that with the construction indicated there can be no maintenaz' :e of contact undesignedly, and that the a of the apparatus will be such that fiy 5.8 time the detent 7L passes out end of the hook D (in Fig. l) the ircuit will have been opened, and the r 3.) ill. have resumed its place in ti.. o catch the detent when it comes around to the illustrated position.

I will now describe the apparatus more particularly in connection with Figs. 1 and 15. Referring particularly to Fig. 15, it will be seen that. the time printing stamp T is arranged in line with the consecutive registers L L; I have only illustrated three of the latter, although the chart shown provides for ten, because the others are similar to those shown and because the selection of number is arbitrary, as will be readily un- .derstood. In Fig. 15 the parts are as before; but the roller E, which is the main operating shaft of the device, is driven by a gear), on the shaft ofa motor P, which meshes with the pinion driving the roller it is preferable to ma a positive drive for this roller. Each of the cams H, as shown,

is made in two parts, in a channel between which lies'the hook D 1, and the lever H is also by preference a frame composed of side-bars united by rivets H, H H having spacing washers, thus making a rigid construction not liable to tilt sidewise under strain. The levels are. all journaled upon a common shaft k Inpractice the machine is made with one time-printing mechanism and as many as may be desired of the consecutive registers, which are assembled as independent units. The time stamp, however, is operated independently of any of the registering mechanisms. The clock gear G as it brings one of its pins F under the lever G raises the escapement G (see Fig. 1), so that a pin, like the pin k on the other cams, is released, permitting the cam G to fall against the roller E and be rotated.

'This depresses the lever G", the construction of which is the same as the levers H and operatesthe time-stamp. The construction of this stamp is substantially like that of the others, except that, there are twelve teeth upon each of its wheels instead of ten, one of the wheels carrying the figures 1 to 12, and the other changing by fives so as to print .as shown upon the left side of the chart in Fig. 6. The escapement is of wellknown form, the pin escaping from the forward tooth and revolving until brought up against the right hand tooth shown in Fig. 1; when the lever Gr drops ofi one of the pins 9 the pin in cam Gr escapes from the rear tooth and brings u against the for mechanism with the lever.

wardone, ready for anot er revolution.

An alternative construction is shown in Fig. 7 and in general I prefer to use this arrangement.

There the parts are lettered as before, but the roller E is provided with a rubber .covering 6 and the surface of the cam is roughened so as to make sure of the engagement of the two. In the frame N is pivoted the lever H and a link M, provided with an adjusting sleeve M and lock nut M connects the consecutive registering Thisv arrangement takes less power to operate, there being no cramping ortilting of the registers,

and prevents any risk of the levers getting out of place and failing to register.

The ribbon, feeding mechanism which I have devised and which is shown in Fig. 4 I believe to be new. The ribbon K is carried between the two reels F F over the stretching rollers F which are shown as. carried upon swinging arms, which may be held open by springs F"; the reels F F? have ratchet teeth oppositely disposed. To the bell-crank F is attached the rod F which, asalready described in connection with Fig.

1.,is' reciprocated from the main shaft. Pivoted to the bell-crank F and to a link F, connected to the crank F by a rod F so that the link and bell-crank reciprocate in unison about the centers of the reels F F, are-links F F respectively, connected by rod F.' The pawl F, which operates the reel F, and the pawl F operating the reel F, are respectively carried uponthese links, and pins f f prevent the pawls dropping too far; as the pawls are to be raised and lowered, the centers of the link F and link F must be different from those of reels F F A collar F upon the link F receives one end of the pin F and a spring F bears against the collar so that the pin and the link F constitute the two arms of a toggle, kept on one side or the other of the center by means of the spring'F;

The operation of this part of the mechanism is as follows: In the illustrated posit ion the bell-crank F carrying with it the llnk F and pawl F is reciprocated by the rise and fall of the rod F ulling over the reel F 4 until the ribbon is all wound off the reel F When the ribbon is drawn taut so that the reels no longer move, the pawl F begins to climb on the teeth of the reel, carrying with it the link F and putting the spring F under tension until the pawl has passed so far over that the toggle is forced past the center, when the spring snaps over into the dotted/line position, thus lowering the pawl F and "causing it to engage with the ratchet on the reel F while the pawl F is raised out of engagement with reel F The reciprocation of the rod F then causes the ribbon to be fed over in the opposite direction until it is all drawn off the reel F, when the operation is reversed; thus giving a positive ribbon-feed, a1ternating in direction as soon as the ribbon is exhausted from either reel.

Fig. 6 illustrates the form of chart or record'which I prefer, though the apparatus may readily be adapted to other forms. It may be ruled as illustrated, or printed entirely by the apparatus, as may be preferred; in general, however, it should be distinctly separated into columns for the different machines, soas to leave no room for controversy. The time is printed on the left; and each of the consecutive registers prints in one of the ruled columns the record corresponding to the machine to which that register is connected, as will be readily understood without further description.

It is obvious that with the ordinary forms of consecutive registering apparatus applied to the purposes of my invention either the numbers must be so small as to be illegito impair theusefulness of the apparatus. To obviate this I have devised what I believe to be an entirely new form of consecu- .ble, or else the record must be so extensive as 35 sands are shown n Fig. 8, and are of comtive registering device, which prints a line instead of-a unit, and at every tenth impression prints a number. The principle thus employed is capable, as will be apparent to those skilled in this art, of further extension without departing from my invention; as for example, it would be possible to print the line for each ten or one hundred spaces and then print a number, or to otherwise vary the relation. lVhen my apparatus is used to keep track of the operations of the engines of a ship during a long voyage the printing of the units of revolutions, for example, might be unduly cumbersome andunder such conditions a larger multiple might be employed, or other variation might be made.

The consecutive register which I prefer to use is shown in Figs. 5,5, and 8 to 14. It is provided with an operating handle Lf, having a spring Zfland. also with guide-pins L L having springs L The spring. Z is weaker than the springs P so that the knob L begins to move before the whole apparatus, for a purpose presently to be described. The usual unit-wheel in this register is blank; it is shown in Figs. 11 and 12 in side and end elevation, respectively, and marked therein L and is provided with 2. lug L. Adjacent to it is the unit line-printer L, mounted upon the central shaft of the register by a slot L having circular ends; to this line-printer the handle L is secured. The other numbering wheels or disks corresponding to the tens, hundreds and thoumon construction. As .seen in Fig. 5, pawls L having springs Z hold the wheels in place ready to print when depressed, and a dog L having a spring Z operates the units-wheel in the ordinary way to change the numbers, the units-wheel operating the others as usual.

Referring also to Figs. 11 and 12, the units-wheel is shown with a lug L against which abuts the shoulder L of the unitsprinter L, shown in Figs. 13 and 14. This looks the two together; but when the lug rotates, the units-printer may 5 move up and down within the limits fixed by the dimensions of the slot L relative to the figure-wheels of the register. In Figs. 9 and 10 is shown in side and end elevation the yoke L which carries the several dogs for actuating the different ratchets of the device, one of these being shown at L in Fig. 5.

The operation of this device is as follows:

When the shoulder L and lug L are in 50 the illustrated position, they lock the unitprinter L so that when the lever H is operated the entire register L is forced down and prints upon the chart the number to whichit happens to be set, together with the line made by the point L of the unitprinter. As it rises under the influence or the springs Z Z the dog L throws over the unit ratchet one step, and the lug L is 1'0- tated out of its illustrated position, shown in Fig. 11 and in dotted lines in Fig. 5. It then does not register with the shoulder L of the unitrinter L and the latter is free to move so ar as the slot L" will permit, the spring Z being weaker than the springs Z I. When the lever H is then operated it depresses the unit-printer as far as the slot L will permit, bringing it below the face of the type on the numbering wheels and causing it to print the horizontal line shown on the chart, the springs Z holding the type faces out of engagement with the ribbon K. This operation is repeated ten times; on the tenth stroke the mechanism at the top of its stroke has returned to the illustrated position shown in Fig. 5, except that the next number on the tens wheel has been brought to the printing position; the shoulder L then locks the parts of the stamp together as before, and when it is depressed the spring Z is not compressed, the whole power of the lever thus being exerted upon the springs Z Z so that the whole register prints.

Having thus described my invention, what I claim and wish to protect by Letters Patent of the United States is:

1. The combination, with means for feeding a record sheet, of one or. more machines the movements of which are to be recorded, I and a consecutive register for marking a line upon the sheet at each desired operation of any machine, and a number at a multiple thereof.

2. The combination, with means for feeding a record sheet, of one or more machinesthe movements of which are to be recorded, a consecutive register means for marking upon the sheet a line at each operation of any machine, and a number at every multiple of ten operations.

3. The combination, with means for feeding a record sheet, a number of machines and a consecutive register for each machine marking its performance upon the record sheet; of a revolving shaft, actuating means for the different registers, means for operatively connecting the actuating means for the registers to the revolving shaft, and means actuated by the motion of each machine for effecting such connection at desired times.

i. The combination, with means for'feeding a record sheet, and machines each having a consecutive register marking its performance upon the record sheet; of a revolving shaft, actuating means for the registers, electrically controlled means for opcratively connecting such actuating means to the shaft, circuits extending from such electrically controlled means to the machine the performance of which is to be recorded,

and switches operated by the machines to' cuits from the machines to the electro-magnets including a source of current; and means, operated by the machlnes, for opening and closlng the circuits at desired times.

6. The combination, with means for feed-: ing a record sheet, machines the performance of which is to be recorded thereon, consecutive reglsters for each of the machines, means for actuating'a register once at each complete operation of a machine and a device for marking the time upon the record sheet.

7. The combination, with means for feeding a record sheet, a number of machinesthe performance of which is to be marked thereon, and consecutive registers, one for each machine, responding to each operation thereof; of a time actuated register, printing the time upon the sheet at desired intervals the elapsed time.

S. The combination, with means for fecding a record sheet, machines the performance of which 1s to be marked thereon, electrically operated devices for controlling the circuits and a .source of current;

marking, of a constantly revolving shaft, a consecutive register for each machine, switches operated by each machine, and means for operatively connecting the registers to the revolving shaft controlled by the switches;

. with a clock mechanism and a printing stamp controlled thereby, acting to print the time upon the record sheet at desired intervals.

9. The combination, with means for feeding a record sheet, of a machine or machines the movements of which are to be recorded, a consecutive register for each machine arranged to print upon the record sheet, and means brought into action by each machine at each complete operation thereof for actuating the corresponding consecutive reg; ister; the register being arranged to print a line at every operation and a number at every tenth operation.

10. The combination, with means for feeding a record sheet, of a machine the movements of which are to be recorded thereon, and a consecutive register connected to the machine by means brought into action by each operation of the machine, which actuates the register; the unit indicator of the register havinga line thereon, but no number, and being arranged to move toward the record sheet in advance of the normally disconnectedmain body thereof for a limited distance for a number of operations, and for the next operation thereafter to belocked in place so' that the whole register is actuated; whereby the unitprinter prints a line upon the sheet for each time that it is moved, but at a desired multiple impression causes the 'entireregis' ter to be actuated to print a numbe 11. The combination, with means for feeding a record sheet, of a machine the movements of which are to be recorded and a cons'ecutive rinting upon the sheet, with-meansbrou t into action by eacho er'atiomof the machine for actuating it e register; the units-printer of the register-befling-independently movable for a number of operations and being locked in place at the nextoperation; with an independenttiineprinting mechanism recording the time upon the sheet. "E

? 12. The combination,with means for ing a record sheet, of a number of machinesthe operations of which are to be marked thereon, a consecutive register for each machine, a power'sha'ft for operating the registers, means operated by themachines for operatively connecting the registers to the shaft at desired times, a time stamp and a clock mechanism for causing the time stamp to indicatethe time upon the record sheet at desired intervals. g

13. The combination, with means for feeding a record sheet, a number of machines the operations ofwhich are to be marked thereupon, a consecutive register arranged to mark the different operations upon the sheet,

of a power shaft for operating the registers, and means controlled by the operation of the machines for-connecting the appropriate 5 registers to the power shaft as each machine completes an operation.

14. The combination, with means for feeding a record sheet, of a machine the operations of which are to be recorded thereon, a consecutive register, means actuated by the machine for causing the register to print at every complete operation thereof, aniiikingribbon for the register, means for feeding the ribbon in one direction until it is exhausted and for then reversing the feed thereof.

15. The combination of a record sheet, a number of consecutive registers recording thereon the operations of individual machines, a constantly revolving shaft, means actuated by the machines for connecting the registers to the shaft at desired times, a common inking-ribbon for all of the registers, and a feeding mechanism for the ribbon actuated by the shaft.

16. The combination, with means for feeding a record sheet, of a number of machines the operations of which are to be marked thereon, a-consecutive register for each maating the lever normally chine, a constantly revolving shaft, means once at each completed motion of the machine to be recorded, a common inking-ribbon for all of the registers, feeding mechanism for the ribbon operated by the shaft in one direction until the ribbon is exhaust.- ed, and means for then reversing the feed.

17. The combination, with means for feeding a record sheet, a consecutive register, and a machine the operations of which are to be recorded upon the sheet by the register, of a constantly revolving shaft, a'lever operating the register and a cam for operheld out of contact with the shaft; and means for releasing the cam at each operation of the machine which is to be recorded.

18. The combination, with means for feeding a record sheet and a number of machines the operations of which are to be marked thereon, of a revolving shaft, a number of consecutive registers, one for each of the machines, a number of levers greater by one than the number of registers, cams carried by the levers, means operated by the machines for bringing the cams into contact with the shaft at desired times, and a timemechanism for controlling one of the levers independent of the rest, with means operated by such lever for printing the time upon the record sheet.

19. The combination, a printing device, a revolving shaft, a lever for operating the printing device and a cam carried by the lever normally out of engagement with the shaft, of a detent for the cam, and means for releasing the detent at desired times.

20. The combination of a number of machines the operations of which are to be recorded, means for feeding a record sheet, consecutive registers, one for each machine, power-driven means normally disconnected from the registers, an electric circuit from each machine controlled by a switch thereon, and means for connecting the registers operatively to the power-driven mechanism, such means controlled by the electric circuits.

21.' The combination of a number of machines the operations of which are to be recorded, means for feeding a record sheet, consecutive registers, one for each machine, power-driven means normally disconnected from the registers, an electric circuit from each machine controlled by a switch thereon, means for connecting the registers operatively to the power-driven mechamsm, such means consisting of levers and cams operating the levers, the cams held in normal position by detents; and electromagnets in the respective circuits from the machines for releasing the detents at desired times.

22. The combination of a number of machines the operations of which are to be recorded, means for feeding a record sheet, consecutive registers, one for each of the machines, a owerdriven shaft for operating the registers, an electric circuit from each machine, a switch upon each machine for opening and closing the circuit at desired times, means for operatively connecting the registers to the shaft, such means controlled by the electric circuits; a timestamp, means for operating the time-stamp from the shaft which operates the-registers, and a clock-mechanism for bringing such operating means into action at desired intervals.

23. The combination of means for feeding a record sheet, a consecutive register, means for operating the register to print upon the sheet, an electric circuit controlling such means, a switch for controlling "the circuit, and a linotype machine; the switch operated by the line-delivery mechanism of the linotype machine to close the circuit once at each operation thereof.

24:. The combination of means for feed ing a record sheet, a consecutive register, power-driven mechanism for causing the register to print upon the sheet, means for connecting the register to the power-driven mechanism, such means normally inoperative, an electric circuit, an electromagnet therein for operating the connecting means, a switch controlling the circuit, and a linotype machine, the switch being operated by the line-delivery mechanism of the linotype machine to close the circuit once at each operation thereof.

525. The combination of means for feed in a record sheet, 'a consecutive register printing upon the sheet, power-actuated means for operating the register normally disconnected therefrom, electrically controlled means for operativelyconnecting the register to the power-actuated means, a linotype machine, a switch operated by the line-delivery mechanism of the linotype, a circuit extending from the switch to the means for connecting the register to the power-mechanism, a time-stamp printing upon the record sheet, means for operatively connecting the time-stamp to the powermechanism, and a clock mechanism controlling such means. I

In witness whereof, I have hereunto set my name in the presence of two witnesses.

HENRY C. ZENKE.

Witnesses;

Tnoims J. JOHNSTON, KATHARINE M. SHEBER.

Itis hereby certified that in Letters Patent No. 1,683,580, granted January 6,

1914, upon the application of Henry C. Zenke of BichmondHilI, New York, for an improvement in Monitors, errors appear in the printed specification requiring correction as follows: Page4, line 107, strike out the Word means; page 5, line 4, for the word and read same page, line 31, strike oilt the words the elapsed time?" page 6,' line 34, before the-article a insert the word with; and that the said Letters Patent should he read with these corrections therein that the same may eonform to the record of the case in the Patent Offiee.

Signed and sealed this 27th day of J anigary, A. D., 1914.

' J. T. NEWTON, Aetz'hg Commissioner of [SEAL]

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