US2019897A - Printing machine - Google Patents

Description

PRINTING MACHINE Filed Nov. 15, 1955 2 Sheets-Sheet 1 6'7 INVENTOR BY ATTORNWEY.

Nov. 5, 1935. M. FIEHL 2,019,897

PRINTING MACHINE Filed Nov. 15. 1955 2 Sheets-Sheet 2 26 FIG.3.-

66 67 INVENTOR Patented Nov. 5, 1935 PATENT I OFFICE PRINTING MACHINE Michael Fiehl, Endicott', N. Y., assignor to International Business Machines Corporation, New York, N. Y., a corporation of New York Application November 15, 1933, Serial No. 698,093

12 Claims. (Cl. 101-318) This invention relates to printing machines in general, more particularly to means for inking printing members such as typewheels, electrotypes, and the like.

The broad object is to provide a novel and improved inking mechanism for printing wheels, electrotypes, and the like.

Another broad object is to provide an inking mechanism which is operated and/or controlled by electricity.

A specific object is to provide an improved inking mechanismsuitable for use in electric time stamps and the like which mechanism renders inking ribbons unnecessary.

Another specific object is to provide an improved inking mechanism for time stamps and the like, which mechanism is electrically controlled and/or operated.

Still another specific object is to provide an inking mechanism for time stamps and the like the operation of which mechanism is initiated by the insertion of the imprinted.

A further specific object is to provide a time stamp or like printing machine which is completely electrically controlled and operated through the insertion of the paper or document to be imprinted, both the impression device and the inking mechanism being electrically controlled and operated.

Various other objects, advantages, and features of the invention will be specifically pointed out in the following description and claims or will be apparent after a study of the description, claims, and the accompanying drawings.

In the drawings: r

Fig. 1 is a diagrammatic view showing the normal condition of the parts and circuits.

Fig. 2 is a similar view showing the condition of the parts and circuits while the printing members are being inked.

Fig. 3 is a similar view showing the condition of the parts and circuits after the printing members have been inked and the impression is about to be taken from the printing members.

Fig. 4 shows the condition of the parts and circuits at the time the impression is being taken and restoration of the parts to normal position is about to take place. a

The present invention is adapted for general use in various types of printing machines but for convenience in description will be described herein as incorporated in a time stamp like, for instance, the one disclosed in Letters Patent No. 1,798,583 granted to L. C. Bishop and A. L.

- a solenoid having a coil I 2.

paper to be stamped or Sprecker. It will be understood that the embodiment of the invention and its setting described herein are illustrative only and the invention is not limited to such embodiment or setting.

The numeral l designates generally a-printing 5 member or instrumentality which may be a time printing type wheel provided with character types as in the above patent. Coacting with the printing member In is a plunger ll actuable by The solenoid may be like the one described in the above patent or any other suitable form may be used. The end of plunger I l nearest the printing member l0 has a table i3 on the upper surface of which may be removably secured an ink pad H of ink retaining material. When the coil I! of the solenoid is energized, the plunger i l is drawn upwardly to force the pad 84 against the faces of the character type on the printing member ill-thereby inking said character types in readiness for a subsequent impression of the character types on the paper or document to be stamped. Slidably mounted in the time stamp framework (not shown) is an impression member or platen l5 adapted to be moved forward from the position of Fig. 1 to the position of Fig. 3. The face of the platen l5 may be of resilient material such as rubber or cork in order to ensure a clear sharp imprint of the character types on a paper or document inserted between platen l5 and the printing member ID and pressed against the latter by said platen when operated. I

Pivoted to platen I5 is a link it which is also,

, pivoted to an arm H. The later is pivoted at l8 to the main framework of the time stamp. Normally a spring l9 tends to rock arm I! in a counterclockwise direction and move the platen 35 to the left (Fig. 3) to the position shown in said figure. Such operation is normally restrained, however, by a latch 20 which engages a hook-shaped lug 2| in the upper end of arm H. In the normal position of the parts in Fig. 1,

the lug 2| presses upon an insulating button on one of a pair of contacts 22 in such fashion as to hold said contacts open. As usual in time stamps, a paper table is provided and designated 23 in the drawings which table has an opening to permit the platen l5 to move upwardly against the printing member ID as in Fig. 4 but prevents contact of the document or paper to be stamped with the ink pad l4 and alsoserves as a guide for the insertion of the paper or document.

Pivotally mounted at 24 is a lever 25 whose upper end normally holds contacts 26 in closed condition and whose lower end normally occupics a. position to the left of contacts 21. The latter are normally open and are rigidly mounted on a gooseneck lever 28 pivoted at 26.' The curved end of lever 28 overlies a projecting part of the plunger H and normally is held against a stop pin 36 by means of a light spring 3| as in Fig. l.

A trip lever 32 is pivotally mounted at 33 and extends upwardly into the path of movement of platen l5 and to one side of plate l3. A link 34 is pivoted to the lower end of lever 32 and connects the latter with an arm 35- pivoted at 36 and a light spring 31 normally holds arm 35 against a stop pin 38 in Fig. 1. The arm 35 has a bent-over lug 39 upon which rests a link 40 pivoted at 4| .to an arm 42. The latter is pivoted at 43 to the framework. The link 40 is normally held in the position of Fig. l by a spring 44 anchored to a pin on said link, which spring holds a lug 45 in link 46 against a stop pin 46. A second lug 41 in link 40, when the parts are in the position of Fig. 1, occupies a position slightly to the right of the lug 39 and in the path of movement of the latter.

An armature 48 is secured to an arm 49 pivoted at 50 to which arm is anchored the spring 44, the armature 48 being adapted to be attracted by the energization of winding l2 to move from the normal positions of Figs. 1 and 3 to the positions of Figs. 2 and 4. The arm has a curved tail or lug 5| which underlies the link 40 and is adapted, when the armature is attracted toward winding l2, to lift the link 48 a distance sufficient to permit lug 41 to clear lug 39 as in Figs. 2 and 4.

A link 52 pivoted to arm |1 connects the latter to the plunger 53 of a solenoid having winding 54. It will be obvious that energization of wind ng 54 will cause the restoration of arm H to the positionof Fig. 1 after each operation of said arm. Pivoted to the framework at 55 is a bellcrank 56, the horizontal arm of which (Fig. l) is adapted to close normally open contacts 51, and whose vertical arm is provided with a cam surface 58 adapted to be engaged by the lower end of lever 25 as in Fig. 3. Secured to arm 42 is a double contact member 59 adapted, when the link 40 is moved to the right, as in Fig. 3, to bridge and thus electrically connect two contacts 60. The latch 28 may be released by means of an electromagnet 6| cooperating with an armature secured to one arm of said latch.

The general details of construction having been described briefly, the operation of the machine will now be explained.

A document or paper to be stamped, designated 62 in the drawings, is pushed against the lever 25 at a point above the card table 23 and below an overhanging part of the casing of the stamp, a fragment of which casing is designated 63 in the drawings, the casing being, as usual, arranged to provide an open slot or similar opening to permit insertion of the paper 62 between the printing member iii and ink pad l4. Pressure of the paper 62 against lever 25 causes the latter to be rocked slightly counterclockwise thus closing contacts 21. v

A circuit is then established from one line wire 64 of the current supply line 64, 65, over wire 66, contacts 21, the winding |2-, and wire 61, to the other wire 65 of the current supply line.

Energization of winding l2 causes plunger to move upwardly to the position of Fig. 2 inking the type faces of printing member ID. During this movement of plunger H, the gooseneck lever 28 is rocked in a counterclockwise direction by plunger II, thus moving contacts 21 downwardly to the position of Fig. 2, freeing said contacts from the influence of lever 25. As a result, contacts 21 open, deenergizing winding I2, which will occur about the end of the upward stroke of plunger ll, and the latter drops by gravity to the normal position of Figs. 1 and 3. During the upward movement of plunger II, the paper 62 is being held against lever 25 with the result that the latter eventually moves to the right of the normal position of contacts 21.

As plunger drops back to its normal position, the lever 25 will be rocked counterclockwise a further distance due to the constant pressure of paper 62 on said lever and eventually, when the pad M and its support ceases to obstruct the passage of said paper over table 23 and underneath printing element II], the lever 25 and paper 62 will move to the position of Fig. 3. The lever 25, in moving from the position of Fig. 2 to that of Fig. 3, will eventually engage the cam surface 58 in bell crank 56 and rock the latter to close contacts 51 as in Fig. 3. At this time, closure of contacts 51 establishes a circuit from line wire 64, through wire 68, contacts 51, wire '69, the winding of magnet 6|, wire 10, and wire 61, to line wire 65. Energization of magnet 6| releases latch 20 allowing spring IE! to move arm |1, link l6, and platen |5 to the position of Fig. 3. During this movement of platen l5, the latter will strike the upper end of lever 32, rocking said lever in a counterclockwise direction, and forcing link 34 to the right (Fig. 3) thus rocking arm 35 in a clockwise direction. Such movement of arm 35 causes lug 39 to engage lug 41 and force link' 40 to the right, rocking arm 42 in a counterclockwise direction until a lug 1| in link 40 strikes stop 46. The movement of arm 42 causes double contact 59 to bridge contacts thus closing a circuit as follows:

Line wire 64 contacts 59, 66, wire 12, windin i2, and wire 61, to line wire 65. As a result, the plunger H is again drawn upwardly moving platen l5 and the paper 62 (which now overlies the platen) upwardly and pressing the paper 62, against the previously inked type faces.

Energization of winding I2 causes armature 46 to be attracted, rocking arm 49 in a counterclockwise direction thus raising link 40 to the position of Fig. 4 due to the action of lug 5|, whereupon spring 44 draws link 40 to the position of Fig. 4 where lug 41 overlies lug 39, this permitting contacts 59, 60 to break the circuit through winding l2. As a result of opening contacts 59, 60 the plunger H and platen I5 drop to the position of Fig. 3 permitting withdrawal of the now imprinted paper 62. Such movement of paper 62 allows lever 25 to swing to the position of Fig. 1, the lower end of said lever wiping past contacts 21 without closing them but merely depressing the left end of gooseneck lever 28 slightly, the right-hand contact 21 being of stifi? metal or having a stiif support strap 15 as shown to prevent said contact from being flexed to the left while permitting the contact to be fiexedto the right a slight amount as. usual in the type of construction illustrated.

Return of lever 25 to-the position of Fig. 1 also causes contacts 26 to reclose establishing a circuit as follows:

Line wire 64, wire 68, contacts 26, wire 13,

contacts 22 (permitted to reclose when arm |1 was released), wire 14, winding 54, and wire 61, to line Wire'65. Energization of winding 54 draws plunger 53, link 52, arm l1, link l6, and platen l5 to the right until latch 2|) reengages thus The 32 to rock back to the position of Fig. 1 thus causing lug 39 in arm 35 to move to position slightly to the left of lug l1 and allow the link 40 to again assume-the position of Fig. l. The parts, having been restored to the normal position of Fig. 1, the time stamp is in readiness for another operation.

It will be noted that the mechanical construction is very simple and that, since all parts are operated and/or controlled by electricity by means of interlocked circuits, the operation of the mechanism is extremely rapid and very reliable.

While there has been shown and described and pointed out the fundamental novel features of the invention asapplied to asingle modification, it will be understood that various omissions and substitutions and changes inthe form and de-.- tails of the device illustrated in its operation may be made by those skilled in the art without departing from the spirit of the invention. It is the intention therefore to be limited only as indicated by the scope of the following claims.

I claim:

1. Aprinting mechanism comprising a printing element, a pad for charging the printing element with ink, means for moving the pad to.

ink charging position, means controlled by movement toward printing position ofthe sheet to be-imprinted for initiatingoperation of the moving means whereby to charge the printing element with ink, a platen adapted to be interposed between the moving means and printing element, andmeans controlled by further movement of thesheet toward printing positionfor interposing the platen and operating the mov ing means.

2. A printing mechanism comprising a printing element,lmeans for inking the printing ele-' ment, operating means therefor, a platen normally out of operative relation with said operatmg means but movable into operating relation and means controlled by movement of a sheet to be imprinted for moving the platen into operative relation with the operating means and initiating an operation of the latter. 7.

- 3. A printing mechanism comprising a printing instrumentality, means controlled by a preliminary movement of a sheet to be imprinted for charging the printing instrumentality with ink, and means controlled by a further movement of said sheet for taking an impression from said instrumentality.

4. A printing mechanism comprising a'printing instrumentality, an inking pad for charging said instrumentality with ink, a solenoid for operating said pad, a control circuit for said solenoid when brought into operative relation with said solenoid for initiating a second operation of the latter.

controlled 3 i 5; A printing mechanism comprising a printing instrumentality, inking means therefor, im-

pression taking means, a control circuit for the inking means, a control circuit for the impression taking means, and means controlled by two incre- 5 bringing the impression means into cooperative relation with the operating means and initiating an operation of the latter.

7. A printing mechanism comprising a printing instrumentality, means for inking said instru- 20 mentality, an electromechanical device for operating the inking means including a control circuit for said device, and means in said control circuit and operated by a movement of, a sheet to .be imprinted for rendering the electromechanical device operative.

8. A printing mechanism comprising a printing element, an impression device, means for moving said device in front of the printing ele-' ment in readiness to take an impression from said element, means for operating said device to take an impression, and means controlled by movement of a sheet to be stamped toward printing position for initiating operation of both the moving means and operating means.

9. A printing mechanism comprising a printing instrumentality such as a type wheel, an inking pad adapted to charge the printing instrumentality with ink, means controlled by a move. ment of a sheet to be imprinted toward printing position for operating said pad to ink said instrumentality, an impression member, and means by a further movement of said sheet for operating the impression member. I 10. A printing mechanism comprising a printing element, an inking device spaced from the printing element to provide a space for the insertion of a sheet to be imprinted, a trip lever at one end of said space in position to be operated by the initial movement of a sheet inserted in said space, means controlled by said Itrip lever for operating the inking device to ink said element, an impression member movable into said space wherein said impression member cooperates with the operating means and confronts the printing element, a second trip lever at "the opposite end of said space to the first trip lever, said second trip lever being operated by the sheet to be stamped when said sheet confronts the printing element; means controlled by said secing device, inkingmeans and impression taking means for said device, a pair of trip spaced levers successively engageable. by movement'of a record sheet to a position in front of the printing element, means for operating the inking .means and impression means, and means controlled by the trip levers for causing the operat- 4 ing means to operate the inking means and impression means in succession.

12. In a printing mechanism, a printing mem- Y latter; a solenoid for operating said pad to ink the member, a trip lever in the path of movement of a sheet to be imprinted and responsive to the initial movement of insertion of said sheet in said.

passage, a control circuit for the solenoid and operated by the trip lever, and means operated by said solenoid for interrupting said circuit when the pad inks the printing element whereby to permit withdrawal of the ink pad from inking position and permit movement of the sheet in front of the printing member.

MICHAEL FIEHL.

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