US380594A - randall - Google Patents

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US380594A
US380594A US380594DA US380594A US 380594 A US380594 A US 380594A US 380594D A US380594D A US 380594DA US 380594 A US380594 A US 380594A
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wheel
wheels
time
shaft
armature
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    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00Analogue/digital conversion; Digital/analogue conversion
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C3/00Registering or indicating the condition or the working of machines or other apparatus, other than vehicles
    • G07C3/08Registering or indicating the production of the machine either with or without registering working or idle time
    • G07C3/12Registering or indicating the production of the machine either with or without registering working or idle time in graphical form

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  • PETERS FhalwLilhogmpher. Washinglnn. D,C.'.
  • This invention relates to what are technically known as timeprinting stamps.
  • Electromagnetic devices have also been employed for driving the printing-wheels of a time-stamp, and in such instance a ratchetwheel cooperates with a lever carrying a pawl or dog which engages with the ratchet-wheel, the pawl-carrying lever being actuated by an electro-magnet and its armature, the printing in such type of stamp being effected by an electro-magnet.
  • All the devices above referred to are expensive, complicated, and, at least when using clock-motors, delicate, limited in power, and unreliable, and limited in the number of time, dating, and character wheels, and in many cases unreliable as to time, especially when the time-keeper is not detached from the stamp proper, the act of stamping or taking an impression causing a jarring of the clock, derangement of the parts, loss of time, and not infrequently the stopping entirely of thetimekeeper.
  • Figure 1 is a plan view of a time-stamp with its top plate and inking devices removed.
  • Fig. 2 is a side elevation of the stamp with its vertical wall removed and other parts broken away to expose operative parts.
  • Fig. 3 is a top view showing the main and auxiliary impression levers and pads.
  • Fig. 4. is a side view of the minute-printing wheel and its driving spur-wheel.
  • Fig. 5 is a detail view of the printing-wheel bearing words or symbols, the latter being on the periphery of the wheel.
  • Fig. 6 is a detail view of the electro-magnet and revolving armature of the electromotor.
  • Fig. 7 is a diagram of an electric circuit including a battery and stamps controlled by a single-circuit wheel of a clock-movement, Fig. 8, a diagram of impression from the printing-wheels.
  • Figs. 9, 10, and 11 are detail views.
  • the reference-numeral 1 designates a box or case consisting of side and end walls and top and bottom plates.
  • a shaft, 2 passes transversely through this box or case and is secured in the side walls thereof.
  • This shaft bears the various wheels concerned in the operation of printing, and it also bears other wheels for driving these printing-wheels.
  • the different wheels are loosely fitted on the shaft 2, so that they can turn thereon.
  • the wheel 3 has its periphery divided into sixty parts and it bears numerals from 1 to 60 for printing the minutes. Secured to this wheel and moving with it is a spur-disk, 4, having also sixty teeth and meshing into a corresponding geargear wheel, 5, which is secured to a shaft, 6, journaled in the side walls of the case or box and capable of turning in its bearings.
  • a wheel, 7, serves to print the hours, and it is for such purpose divided into twenty-four parts or teeth, having thereon, preferably, the meridian-marks A. M. and P. M. and the numerals from 1 to 12 repeated.
  • the letter A. may be used for A. M. and the letter P. for P. M., the type-wheel then reading A. 12, A. 1, A. 2, &c., and P. 12, P. 1, P. 2, 850.
  • a gear-wheel, 8, Secured to the type-wheel 7 and revolving with it is a gear-wheel, 8, having twenty'four teeth.
  • This wheel meshes into a spur-wheel, 9, also having twenty-four teeth and mounted loosely upon the shaft 6.
  • This shaft also bears a fixed projecting pin, 10, which serves to act upon the teeth of the gear-wheel 8 for turning the same.
  • a wheel, 11, loosely mounted on the shaft 2 is termed the day-wheel, and is preferably divided into thirty-two parts. It bears the numerals from 1 to, 31, representing the thirty-one days of the months, and carries also some word, as Change, or the figure of an arrow or aspace.
  • Secured to this wheel 11 is the gear-wheel 12, having thirty-two teeth, into which the pin 13, fixed to the side of wheel 9, plays.
  • a wheel, 14, also loosely mounted on the shaft 2, is designated the month-wheel, and is divided into twelve parts and carries the names of the months or abbreviations thereof.
  • This wheel may also be provided with suitable gearing and rotated one step per month; but preferably, for the sake of simplicity, it is operated manually.
  • a wheel, 15, on the shaft 2 is designated the year-wheel, and it is preferably divided into twelve parts, in the same way as the month-wheel.
  • These two wheels viz., the month and year wheelsare locked together and held in place by means of a suitable pin, 16, which passes through the side wall of the box 1 and enters suitable holes made in the wheels 14 and 15, as is seen in Fig. 1.
  • These holes are arranged in a circle, and they are made to register or correspond, as will be shown, and there are as many holes in the wheel as there are divisions or printing spaces thereon.
  • the day-wheel 11 is held in place or is prevented from turning, except at the proper time, by means of a spring-catch, 18, which bears in and upon the spur-wheel 12, fixed upon said day-wheel.
  • the hour-wheel 7 also may be held in a similar manner.
  • the wheels 3, 4, and 5, on the contrary, are held by the motor device on the shaft 20 through the medium of the electro-magnet 21 and armature 24, the spring-catch 22,and the starwheel 23. Referring to the motor device, it may be stated that it comprises an armature,24,which is secured to the shaft 20 and revolves with it.
  • This armature may be made of a single piece of cast-iron having six projecting teeth, as shown, or it may be made of a disk of wood carrying six or any other desired number of iron pieces, or it may be made in any other convenient manner, so long as it is operative by the action of the electro-magnet 21.
  • the star-wheel 23, above referred to, is secured to the shaft 20, and to define its shape and function more precisely it may be stated that it has V-shaped teeth, upon which bears the spring-catch 22, which serves both to hold the shaft and armature in place and to partly rotate it to a determined position.
  • I mount loosely one or more extra wheels,which are held in place by any suitable locking device-such as a pin, 27-passing through holes in the sides of the extra wheels and entering the casing 1.
  • the extra wheels (designated by the numerals 27 and 27) are divided into a certain number of points and carry thereon words, signs, and numerals.
  • the numeral-wheel 27 I preferably divide into thirty parts, carrying the ten digits and the numbers 5,10,15,20, 25, 30,35,-l0,45,50,55, 60, 65, 70, 75,80, 85, 90, 95, 100.
  • the character, sign, or word wheel or wheels 27 may carry any conventional signs, words, or characters for facilitating business, such as Operator, Rush, Collect, Paid, Received, Number of lVords, &c.
  • the word-wheel I preferably have print at right angles with the rotating time type-wheels an impression reading something as shown in Fig. 8.
  • These type-wheels may be constructed,in any of the well'known ways, of metal or wood and divided into teeth or parts and engraved with the letters, figures, or characters, or they may be cast in metal or rubber; but, preferably, they are made of light metal covered on the circumference with a ring, band, or tire of soft rubber having the letters, numerals, &c., east thereon.
  • Fig. 11 I have shown such a rubber ring or tire with varied type, a designating the ring, and b the type.
  • the aforesaid electro-magnet 21, (or magnets,) having a rotary armature, 24.
  • the magnet 21 is included in an electric circuit with a battery and with the circuit-wheel 3O (shown in Fig. 7) or a similar one attached to or actuated by a time-keeper or clock-movement.
  • the circuit-wheel may be made in any of the well-known ways and secured to a shaft of the clock-movement or time-keeper and r0 tated thereby.
  • the circuit-breaker must be provided with a proper number of contact points to make the electromotor move the minute-wheel 3 one step each minute, and step by step, the circuit-wheel having, if secured to the hour-shaft of the clock-movement, sixty makes and breaks, as shown in Fig. 10, so that the electromagnet is charged and discharged sixty times per hour.
  • the contact should be so made as to charge the electro-magnet sufficiently long to throw the armature, shaft, pinion, and V- shaped toothed wheel far enough to move the V-shaped spring-catch 22 past and over one tooth, when, the circuit being broken, the magnet discharged, and the armature released, the springcatch acts in and upon the V-shaped IOC toothed wheel, moving it to the correct position and holding it until the electro-magnet is again energized.
  • impressions from the type-wheels may be taken by a suitably supported impressionpad, either of the lever or plunger form.
  • a lever, 35 as shown in Figs. 2 and 3, suitably fulcrumed and held normally in place by a spring and stop.
  • I also use, when desired, an auxiliary impression-lever, 36, so arranged that it may be used independently of or in conjunction with the main impression-lever.
  • I provide two levers, which are suitably fulcrumed, the auxiliary lever, as shown in Fig. 3, being in the path of the downward movementof the main lever to permit it to be caught by the projecting pin 37 and carried with it.
  • This auxiliary lever is provided with a separate knot, so that it may be used independently, if desired.
  • the operation is as follows: Commencing with a given time, the year, month, day, and extra Wheels being set correctly, and the hour and minute wheels being set t c-correspond with a time-keeper, when the circuit-wheel 30 at the time-keeper revolves, as soon as the circuit is closed, by contact of the spring-contact 38 with a metal tooth of the circuit-wheel 30, a current of electricity is sent from the battery over the electro-magnet 21 of the electromotor, and the armature is actuated and the V-shaped toothed wheel moves one tooth or thereabout, the shaft 20, shaft 6, pin
  • the type-wheel 14 may be antomatically set monthly and the type-wheel15 once a year; but for simplicity I prefer to set these manually.
  • An impression may betaken at any time from the type-Wheels by a quick percussive-like blow of the impression-levers 35 36.
  • extraimpressions from the extra typewheels are desired upon thesame paper or document upon which a time-impression is made, or upon other papers or documents, it may be done by means of the auxiliary lever 36 after setting the extra type-wheels for the required impressions.
  • Fig. 7 I have shown the circuit-wheel of the time-keeper connected in circuit with adistance from the time-keeper, thereby preventing any derangement of or interference with the time-keeper, insuring correct timekeeping, without which timestamps are of little or no value.
  • the combination of the electromotor device consisting, essentially, of a revolving shaft, an armature having radial projections mounted on said shaft, means, substantially as described, for partly rotating the armature to a determined position, and an electro magnet, with means, substantially as described, for communicating motion from the armature shaft to a series of type-wheels, a circnit-wheel, and a clock-movement controlling the circuit-Wheel, substantially as set forth.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)

Description

. (No Model.) a a Sheets-Sheet 1.
G. A. RANDALL.
ELECTRICAL TIME S'fAMP. v
No. 380,594. Patented Apr. 3, 1888.
' r: I886 MAY l5 A40 45 E3 (No Model.) I V 3 Sheets-Sheet 2. 'G. A. RANDALL.
ELECTRICAL TIME STAMP.
N0.'380,594,. Patented Apr. 3, 1888.
Inwzgioz %,ggf 0 0 O 0 Q 0 hrzwulifizieahzl.
R. PETERS. FhalwLilhogmpher. Washinglnn. D,C.'.
(No Mom. 3 Sheets-Sheet s.
G. A. RANDALL. ELECTRICAL TIME STAMP.
No. 380,594. Patented A r; 3-, 1888..
UNITED STATES PATENT OFFICE.
CHARLES A. RANDALL, OF NEW YORK, N. Y.
ELECTRICAL TlME-STAM P.
SPECIFICATION forming part of Letters Patent No. 380,594, dated April 3, 1888.
(No model.)
To all whom it may concern.-
Be it known that I, GHARLEs A. RANDALL, a citizen of the'Unite'd States, residing at New York, in the county of New York and State of New York, have invented new and useful Improvements in Electro-Mechanical Time- Printing Stamps, of which the following is a specification.
This invention relates to what are technically known as timeprinting stamps.
In instruments of this class using typewheels it has been customary heretofore to drive one or more of the time-wheels by a clock-motor, the time-wheels being geared directly to the minute or hour shaft of the clock, and also to drive the time-wheels indirectly by a clock-motor, the power of the clock-motor being used to wind up or put'tension upon a spring, which, being released at regular intervals by proper cams, ratchets, and detents, serves to turn the time-wheels; and, furthermore, it has been proposed to use two or more clock movements or motors geared or connected together, one acting to regulate or control the action of the other, one movement being used as a time-keeper and the other for the purpose of driving or rotating the time-wheels.
Electromagnetic devices have also been employed for driving the printing-wheels of a time-stamp, and in such instance a ratchetwheel cooperates with a lever carrying a pawl or dog which engages with the ratchet-wheel, the pawl-carrying lever being actuated by an electro-magnet and its armature, the printing in such type of stamp being effected by an electro-magnet.
All the devices above referred to are expensive, complicated, and, at least when using clock-motors, delicate, limited in power, and unreliable, and limited in the number of time, dating, and character wheels, and in many cases unreliable as to time, especially when the time-keeper is not detached from the stamp proper, the act of stamping or taking an impression causing a jarring of the clock, derangement of the parts, loss of time, and not infrequently the stopping entirely of thetimekeeper.
i It is the objectof my invention to overcome the many serious defects in stamps of the class mentioned and to produce an instrument that shall be detached from the time-keeper, that shall not be limited in power, and that shall be compact, simple, reliable, and otherwise adapted to the demands of business for which it is intended; and to this end my invention consists in the construction and combination of devices hereinafter claimed.
In the drawings, Figure 1 is a plan view of a time-stamp with its top plate and inking devices removed. Fig. 2 is a side elevation of the stamp with its vertical wall removed and other parts broken away to expose operative parts. Fig. 3 is a top view showing the main and auxiliary impression levers and pads. Fig. 4. is a side view of the minute-printing wheel and its driving spur-wheel. Fig. 5 isa detail view of the printing-wheel bearing words or symbols, the latter being on the periphery of the wheel. Fig. 6 is a detail view of the electro-magnet and revolving armature of the electromotor. Fig. 7 is a diagram of an electric circuit including a battery and stamps controlled by a single-circuit wheel of a clock-movement, Fig. 8, a diagram of impression from the printing-wheels. Figs. 9, 10, and 11 are detail views.
The reference-numeral 1 designates a box or case consisting of side and end walls and top and bottom plates. A shaft, 2, passes transversely through this box or case and is secured in the side walls thereof. This shaft bears the various wheels concerned in the operation of printing, and it also bears other wheels for driving these printing-wheels. The different wheels are loosely fitted on the shaft 2, so that they can turn thereon. The wheel 3 has its periphery divided into sixty parts and it bears numerals from 1 to 60 for printing the minutes. Secured to this wheel and moving with it is a spur-disk, 4, having also sixty teeth and meshing into a corresponding geargear wheel, 5, which is secured to a shaft, 6, journaled in the side walls of the case or box and capable of turning in its bearings. A wheel, 7, serves to print the hours, and it is for such purpose divided into twenty-four parts or teeth, having thereon, preferably, the meridian-marks A. M. and P. M. and the numerals from 1 to 12 repeated. If desired, the letter A. may be used for A. M. and the letter P. for P. M., the type-wheel then reading A. 12, A. 1, A. 2, &c., and P. 12, P. 1, P. 2, 850.
Secured to the type-wheel 7 and revolving with it is a gear-wheel, 8, having twenty'four teeth. This wheel meshes into a spur-wheel, 9, also having twenty-four teeth and mounted loosely upon the shaft 6. This shaft also bears a fixed projecting pin, 10, which serves to act upon the teeth of the gear-wheel 8 for turning the same. A wheel, 11, loosely mounted on the shaft 2, is termed the day-wheel, and is preferably divided into thirty-two parts. It bears the numerals from 1 to, 31, representing the thirty-one days of the months, and carries also some word, as Change, or the figure of an arrow or aspace. Secured to this wheel 11 is the gear-wheel 12, having thirty-two teeth, into which the pin 13, fixed to the side of wheel 9, plays.
A wheel, 14, also loosely mounted on the shaft 2, is designated the month-wheel, and is divided into twelve parts and carries the names of the months or abbreviations thereof. This wheel may also be provided with suitable gearing and rotated one step per month; but preferably, for the sake of simplicity, it is operated manually.
A wheel, 15, on the shaft 2 is designated the year-wheel, and it is preferably divided into twelve parts, in the same way as the month-wheel. These two wheelsviz., the month and year wheelsare locked together and held in place by means of a suitable pin, 16, which passes through the side wall of the box 1 and enters suitable holes made in the wheels 14 and 15, as is seen in Fig. 1. These holes are arranged in a circle, and they are made to register or correspond, as will be shown, and there are as many holes in the wheel as there are divisions or printing spaces thereon.
The day-wheel 11 is held in place or is prevented from turning, except at the proper time, by means of a spring-catch, 18, which bears in and upon the spur-wheel 12, fixed upon said day-wheel. The hour-wheel 7 also may be held in a similar manner. The wheels 3, 4, and 5, on the contrary, are held by the motor device on the shaft 20 through the medium of the electro-magnet 21 and armature 24, the spring-catch 22,and the starwheel 23. Referring to the motor device, it may be stated that it comprises an armature,24,which is secured to the shaft 20 and revolves with it. This armature may be made of a single piece of cast-iron having six projecting teeth, as shown, or it may be made of a disk of wood carrying six or any other desired number of iron pieces, or it may be made in any other convenient manner, so long as it is operative by the action of the electro-magnet 21.
The star-wheel 23, above referred to, is secured to the shaft 20, and to define its shape and function more precisely it may be stated that it has V-shaped teeth, upon which bears the spring-catch 22, which serves both to hold the shaft and armature in place and to partly rotate it to a determined position. A pinion, 25, also secured to the shaft 20, meshes with the main or large gear-wheel 5 on the shaft 6. As shown, the pinion must have six teeth or leaves to correspond to the six project-ions of the armature; and since it meshes into the gear-wheel 5, having sixty teeth, it is obvious that the pinion and armature and shaft upon which they are mounted will revolveten times to one of the wheel 5, or ten times an hour.
Upon the shaft 2,and preferably outsideofthe frame or box, I mount loosely one or more extra wheels,which are held in place by any suitable locking device-such as a pin, 27-passing through holes in the sides of the extra wheels and entering the casing 1. The extra wheels (designated by the numerals 27 and 27) are divided into a certain number of points and carry thereon words, signs, and numerals.
The numeral-wheel 27 I preferably divide into thirty parts, carrying the ten digits and the numbers 5,10,15,20, 25, 30,35,-l0,45,50,55, 60, 65, 70, 75,80, 85, 90, 95, 100.
The character, sign, or word wheel or wheels 27 may carry any conventional signs, words, or characters for facilitating business, such as Operator, Rush, Collect, Paid, Received, Number of lVords, &c. The word-wheel I preferably have print at right angles with the rotating time type-wheels an impression reading something as shown in Fig. 8. These type-wheels may be constructed,in any of the well'known ways, of metal or wood and divided into teeth or parts and engraved with the letters, figures, or characters, or they may be cast in metal or rubber; but, preferably, they are made of light metal covered on the circumference with a ring, band, or tire of soft rubber having the letters, numerals, &c., east thereon. In Fig. 11 I have shown such a rubber ring or tire with varied type, a designating the ring, and b the type.
Upon the inside of the box, case, or frame is secured the aforesaid electro-magnet 21, (or magnets,) having a rotary armature, 24. The magnet 21 is included in an electric circuit with a battery and with the circuit-wheel 3O (shown in Fig. 7) or a similar one attached to or actuated by a time-keeper or clock-movement. The circuit-wheel may be made in any of the well-known ways and secured to a shaft of the clock-movement or time-keeper and r0 tated thereby. The circuit-breaker must be provided with a proper number of contact points to make the electromotor move the minute-wheel 3 one step each minute, and step by step, the circuit-wheel having, if secured to the hour-shaft of the clock-movement, sixty makes and breaks, as shown in Fig. 10, so that the electromagnet is charged and discharged sixty times per hour.
As shown, the contact should be so made as to charge the electro-magnet sufficiently long to throw the armature, shaft, pinion, and V- shaped toothed wheel far enough to move the V-shaped spring-catch 22 past and over one tooth, when, the circuit being broken, the magnet discharged, and the armature released, the springcatch acts in and upon the V-shaped IOC toothed wheel, moving it to the correct position and holding it until the electro-magnet is again energized.
The impressions from the type-wheels may be taken by a suitably supported impressionpad, either of the lever or plunger form. I have preferably used a lever, 35, as shown in Figs. 2 and 3, suitably fulcrumed and held normally in place by a spring and stop.
I also use, when desired, an auxiliary impression-lever, 36, so arranged that it may be used independently of or in conjunction with the main impression-lever. For this purpose I provide two levers, which are suitably fulcrumed, the auxiliary lever, as shown in Fig. 3, being in the path of the downward movementof the main lever to permit it to be caught by the projecting pin 37 and carried with it.
This auxiliary lever is provided with a separate knot, so that it may be used independently, if desired.
The parts being made and arranged substan tially as described, the operation is as follows: Commencing with a given time, the year, month, day, and extra Wheels being set correctly, and the hour and minute wheels being set t c-correspond with a time-keeper, when the circuit-wheel 30 at the time-keeper revolves, as soon as the circuit is closed, by contact of the spring-contact 38 with a metal tooth of the circuit-wheel 30, a current of electricity is sent from the battery over the electro-magnet 21 of the electromotor, and the armature is actuated and the V-shaped toothed wheel moves one tooth or thereabout, the shaft 20, shaft 6, pin
10, wheel 5, wheel 4, and minute-wheel 3 moving a corresponding distance to the proper positions, where they are held until the electromotor is again operated, and so on every minute. When the shaft 6 has made fifty-nine sixtieths of a revolution, the pin 10 engages in the wheel 8,throwing the hour-Wheel 7 one step at the complete revolution of the shaft 6, and also moving the wheel 9 by the action of the spur-wheel 8 upon said wheel 9, and at twenty-four revolutions of the shaft 6 the hourwhcel 7 and gear-wheel 8 and gear-wheel 9 will have made one complete revolution, and the pin 13 upon the wheel 9, acting in and upon the gear-wheel 12, will move it and the wheel 11 one step or one tooth at every revolution of the wheel 9, the gear-Wheel 8, and the hour-wheel 7. It will be understood that in a similar manner the type-wheel 14 may be antomatically set monthly and the type-wheel15 once a year; but for simplicity I prefer to set these manually. An impression may betaken at any time from the type-Wheels by a quick percussive-like blow of the impression-levers 35 36.
If extraimpressions from the extra typewheels are desired upon thesame paper or document upon which a time-impression is made, or upon other papers or documents, it may be done by means of the auxiliary lever 36 after setting the extra type-wheels for the required impressions.
In Fig. 7 I have shown the circuit-wheel of the time-keeper connected in circuit with adistance from the time-keeper, thereby preventing any derangement of or interference with the time-keeper, insuring correct timekeeping, without which timestamps are of little or no value.
It will also be seen that with this invention ample power can be provided for actuating the parts and settingvthe type-Wheels automatically and reliably; also,that the parts are re duced to a minimum,considering the needs of business, and also that with this invention any number of stamps may be automatically and simultaneously actuated and controlled by a time-keeper or clock-movement common to all. While I have shown a single helix electromotor, I do not restrict myself thereto, as the electromotor may be made in many forms and with or without an escapement without departing from the spirit of my invention.
While I have shown but one circuit-wheel, 30, and one circuit in Fig. 7, it will be understood that the time-keeper or clock-movement may be made to carry a number of circuitwheels, or have a number of contact-springs bearing upon the circuit-wheel 30, and a corresponding number of circuits with a suitable battery for each. Any of the well-known devices may be employed for inking the typewheels. [twill be understood that the stamp,
when constructed as shown, is more especially ing an electro-magnet, a rotary armature, substantially as shown, and means, substantially as described, for partly rotating the armature to a determined position, intermediate gearing for driving thev type-Wheels, and a timekeeper or clock mechanism for controlling the action of the electric motor, substantially as herein set forth.
2. In a hand time-stamp, the combination,
with the type-wheels, the impression-pad, the electromotor for rotating the type wheels, and the clock movement or time-keeper for controlling the electromotor, of auxiliary type-wheel or typewheels and an auxiliary impressionpad, substantially as set forth.
3. In a time-stamp, the combination of the electromotor device consisting, essentially, of a revolving shaft, an armature having radial projections mounted on said shaft, means, substantially as described, for partly rotating the armature to a determined position, and an electro magnet, with means, substantially as described, for communicating motion from the armature shaft to a series of type-wheels, a circnit-wheel, and a clock-movement controlling the circuit-Wheel, substantially as set forth.
4. In a timestamp, the combination of the motor acting upon the wheel 5, and typewheels with spur-wheels cooperating with the wheel 9 and pins 10 and 13, substantially as set forth.
In testimony whereof I have affixed my signature in presence of two witnesses.
CHARLES A. RANDALL.
Witnesses:
ARTHUR E. SMITH, GEORGE Q. OoLLINs.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433608A (en) * 1943-06-01 1947-12-30 Union Totalisator Company Ltd Electromagnetic stepping mechanism for numeral wheels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433608A (en) * 1943-06-01 1947-12-30 Union Totalisator Company Ltd Electromagnetic stepping mechanism for numeral wheels

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