US1781395A - johnson - Google Patents

Description

Nov. 11, 1930. F. JOHNSON 1,781,395

PRINTING MACHINE Original Filed Aug. 10. 1927 2 Sheets-Sheet 1 INVENTOR 47 52* BY g C m M {Jvmq M a ATT RNEY Nov. 11, 1930. F. JOHNSON 1,781,395

PRINTING MACHINE Original Filed Aug. 10. 1927 2 Sheets-Sheet (2 INVENT OR 21 ATTORNEY Patented Nov. 11, 1930 rnrrz aoimsolv, or anem a, WISCONSIN,

ASSIGN'OR, BY MESNE ASSIGNMENTS, 'ro

sr irnnnson'uivnnawnna MILLS, or SOUTH BEND, INDIANA, A coarona'rron ra lvrme MACHINE Original application-filed August 10, 1927, Seria1 No. 212,026. Divided and this application filed October 10, 1928. Serial No. 311,430. r

This invention relates in general to printing machines and more particularly to aribbon inking mechanism capable of organization andadvantageous use with a printing machine of the type especially designed and adapted for printing the numbers or characters in the spaces of so-called coupon tickets employed for keeping a record of piece work in various industries. Thisapplication is a division of the copending application of Fritz Johnson for printingymachines filed August 10, 1927, Serial No. 212,026.

In a printing machine of this type, the

, inking ribbon overlies the printing bed during the printing operation, and the impression of the type of the bed is transferred through the ribbonto the coupon which overlies the ribbon, the impression'being effected by means of a platen brought down upon the coupon and pressing it toward the ribbon and bed. A guard intervenes between the coupon and ribbon and precludes any soiling or im-,

proper printing on the coupon although cut out to permit impression in the proper spaces of the coupon. Printing beds of this character are usually made up of adjustable or replaceable type in order to permit the mat-- ter printed to be varied as required. The

adjustment or replacement of said type requires that the printing bed be easily acces- One of the principal objects of the present invention is to provide a simple and practical ribbon inking mechanism which is so constructedand mounted that it may be easily brought intoco-operative relation to the rintin bed or moved-to a osition awa P s from the printingbed to afford convenient access thereto. i t i l -Another object resides in the provision of aribb-on inking mechanism having these advantages, anduwhich is equipped with both manual and automatic feeds sothat while the ribbonis automatically advanced through a predetermined and proper distance following each impressionit may be also manually advanced if desired, independently ofimpressions. Further, the construction is such as to permlt easy rewlnding of the inking ribbon. Other obJects and advantages reslde 1n certain novel features ofthe construction, ar' rangement and combination of parts which will bejhereinafter more fully described and particularly pointed out in the appended claims, reference being bad to theaccompanying drawings forming a part of this specification, and in which: i l a Figure l is a fragmentary perspective view lookingtoward the front of the machineand showing the inking ribbon and its frame elevated to expose the printing bed, the printing bed beingillustrated diagrammatically for the sake of simplicity in illustration; Figure 2 is a fragmentary perspective view looking toward one side of the machine and having parts broken away in order to illustrate the means foroperating the platen;

Figure 3 is a fragmentary detail view in side elevation illustrating the feed mechanism for the inking ribbon;

Figure 4 is a view in section taken on line H of Figure 3;

Figure 5 is a detail sectional view showing the construction of the pawl of the ribbon feed; 1

Figure 6 is a fragmentary detail sectional view showing the swingable mounting of the ribbon frame; y 1

Figure 7 is a similar view showing tension means for the inking ribbon; y

Figure 8 is a View of the ribbon framein central longitudinal section, the ribbon being shown in elevation for the sake of simplicity of illustration; and

Figure 9 is a view in transverse section taken on line 9-9 of Figure 8:

As shown, the printing machine comprises a suitable base lsupported on legs 2 which plurality of rows of adjustable printing wheels designated generally at 8. The details of construction of the printing bed form no partof the present invention and for these features reference is had to the copending application of Fritz Johnson, Serial No. 212,026, referred to above.

*2 f T a 1,781,395

An inking ribbon or inking sheet 45i0V61 lies the printing bed and is carried by a i which isfirotatably' fitted in an inwardlyand laterally projectingtearing boss '50 formed swingable ribbon frame 46 which may consist of side bars 47 maintained in spaced re-' lation by cross rods-48. The side barsl'i' are pivotally supported on the base'of the machine and for this purpose one end of each sidebar 47 is provided with an opening. 49

on'a" bearing bracket 51 carried by the base of the machine as clearly shown in Figure 6.

Reelsorrolls. 52 and 53" are' provided for the inking ribbon or sheet 45, the roll 52'l1aving a reduced extension 52? at each end rotatably mounted in the associated bearing bracket51,-

as illustrated in Figure 6; Therollor reel 53 Tensioning means for the ribbonisorgam izedwith the r0115?) andmay Consist of a friction faced shoe or Washer 55 suitably operatively disposed with respect "to the fitted on one of the reduced extensions 53* of the roll 53 and fri'ction'ally engaging the; adjacent side bar 47 of the frame 46 under the infiuence of a compression coil spring56 interposed between thewasher 55 and a knob 57 fixed onthereduced extension53 and having its ends operatively associated with the washer and withthe knobf T The roll 52 is 'intermittently driven by suitable feed mechanism which preferably automatic. ,Thls feed mechanisrncomprises a ratchet wheel 58"iixed to orient the reduced extensions 52 and a pan/1.59 cooperable with the ratchet wheel 58 and carried by one of the mounting trunnions'60 of the bar 61 ofa" guard designated generally at .62. This bar 61 has a trunnion 60 at each end 'and'thesef trunnions 60 are pivotally supported in the side bars 47 ure 9).

The trunnion 60 which hasthe "pawl'59 fixed thereto projects laterally beyond its side bar of the ribbon. The pawl'59 has a tooth 63 received in the slotted head of the pawl and pivoted thereto as at 64. The tooth 63 is-projected' by a spring '65bu t' is limited to its pivotal movement by means of astop pin66, which is carried by the pawl and: which extends through a slightly elongated z'i'rc'hate slot formed in the tooth. With this arrange{--- ment when the pawl 59 swii1gs downwardly,

that is, in a clockwise directionas viewedin Figure 3, its tooth 63 coacts with the ratchet wheel 58 to advance the inking ribbon or sheetfthat isftjo wind theinking ribbon or sheet on th'e'roll'52 whereas when the pawl 59 moves upwardly, that is, in a counter.-

clockwise direction as viewed-"in Figure 3,;

the spring 65 is compressedto permit the "shalt r of the ribbonlframe (see Fig mally engages the ratchet Wheel 58 to prevent retrograde movement -of the roll"52.i I

When. the ribbon or inking sheet'is to be rewound on the roll 53, this dog or, detent, 1

I The guard 62 has theusual guard'fingers 62 suitably cut out or shaped to expose only the proper portions :of t'l1e- 1prii1ting.;bed.f: :A; retractile coil spring 69 has one end connected as at 70to one of the bearing brackets 51 and has its opposite end connected to a bracktheguard "62 slightly 'abovethe printing bed.v

- 'lo provide for manual.depression of the guard andmanualactuation or the feed}:

mechanism a pivoted finger piece7 3 is mounted onone of theside barszl7 V of the frame-and is connected to the 'brac'ket 72 a'link or connecting rbdi74 A platen designated 'generally at7 5 coj printing bed and overlies the same as shown in the drawiiigm-the'platenbeing carriedby curvedfa rnis 76 which are fixed to a rock- TY i'supperted for oscillating or rockingT x movementin'bearings7 8 formedon the base; A crank a rrn79 isfix'edto theiockshaft 77 1 V ,andhasits proj ectin'g 'portion slotted or bifurcat'ed' and formed'iwith registering holes I00 80,2111 alinedfpaii" of which i'nay freceive a crank pin 81- design ed to coact*withshoulvders 82 or 83' formed (in a pitnian- 84 which fits in t heslot provided by thebifurcated arm i of the crank and which is p-ivotally *cbrinect- 1 ed at its lower'end' to a treadle 85. The pit inan 8 is biased to cause its "shoulders to" swing toward and engage"-thecrank pin 81, this biasing being effected by aretractile ,coil spring 86"( see Fig. 2 "which hasone end an 11 chored on the base of the machine as at 86' f" and which has its other end connected to the 'pitman 84 as indicated at'87.- 'l-he'treadle" 85 '7 and consequentlythe pitman 84c,' the*crank arm 79, the rock shaft77,'the arms76, and the platen 75, are urged'to 'a position where in the platen is elev'ated"and this "action: is brought about by a pair of Yrectractile coil detent 68 is pivotally springs 88 connected as at 89 to the t readle and carried bya cross li'eiidf'90 farmed in the 1.20 "lower end ofan'adjustable mounting rod 91, i the mounting rod 91bei'ng suitably support- .;et 72 fixed to the been the gua d Where' by the spring 69 tends to normally elevate 'ff ed on the base'of th'e niachin'el' 1Theplaten'75- 5 i 1 and thep arts whichicarry'the same have i H considerable weight audit is this weight-that 125 is utilized to makeithe impression, the dc pressio n of the treadle merely relieving the platen of the'supporti n g action of the springs 88 exerted through thepitinan' 84=,"cra r'1k pin 81, rock shaft' 77, and arms 76. 5 'By prjovi-ding platen 7 is elevated in this manner, the handie portion 84 of the pitman is grasped and the pitman is pushed rearwardly. The treadle is held against upward movement and the platen is grasped and pushed up until the shoulder 82 is positioned beneath the pin 81 whereupon the pitman, platen and treadle are released and the platen is held elevated in the position shown in Figure 2.

Upon elevation of the ribbon carrying frame, the entire printing bed is exposed and any adjustments that may be necessary are effected in an easy and convenient ma11- and letting platen down until the ner and under the full view of the operator. After lowering of the inking ribbon, the platen may be brought into cooperative relation to the printing bed by grasping handle portion 8a of pitman and pressing same rearwardly to disengage shoulder 82 from pin 81 7 pin 81 engages the shoulder 83.

. During the operation of the machine the inking ribbon is automatically fed a slight amount in between each printing operation. When the platen 75 moves down to make an impression, it rotates the guard 62 in a counter-clockwise direction as viewed in Figure 2 and similarly moves the pawl 59 (see Figure 3). This causes the tooth 63 of the pawl to play idly and upwardly over the teeth of the ratchet wheel 58. The shifting of the guard 62 tensions its spring 69 and as soon as the platen 7 5 is moved upwardly the spring 69 pulls the guard upwardly and this moves the pawl 59 in a clockwise direction as viewed in Figure 3 and causes its tooth 63 to move downwardly and consequently to actuate the ratchet wheel 59 to a slight extent. The spring 69 is positionedand designed to impart movement of the proper amplitude to these parts. While the guard is automatically actuated by the platen, it is free thereof and does not interfere with the platen being moved to either of its two positions.

The invention claimed is:

1, A printing machine having a printing bed, an inking ribbon overlying the printing bed, a frame for the inking ribbon, rolls upon which the ribbon is wound said rolls being rotatably mounted on the ribbon frame, tensioning means associated with one roll,

feeding means associated withthe other roll and including a ratchet wheel connected with the axis of such roll and rotatable therewith, a pawl cooperable with the ratchet it to; advance the ribbon, a shiftable guard mounted on the ribbon frame above the inkingribbon and operatively connected with the feedmechanism for actuating the same when 1t 1s shifted, and a platen cooperable with the pr nt ng bed and also engaging the guard for shift ng 1t.

3. ,A printing machine of the character de{ scribed comprising a printing bed, an inking ribbon therefor, feed mechanism for advanc ing the ribbon, a shiftable guard cooperatively disposed with respect to the ribbon and operativ-ely connected with the feed mechanism for actuatingrit and a platen cooperable with the printing bed and also operating to shift the guard.

4:. In a printing machine having a printing bed, a ribbon inking mechanism including an inking rbbon overlying the printing bed, a feed mechanism for advancing the ribbon, a shiftable guard cooperatively disposed with respect to the ribbon and operatively connected with the feed mechanism for actuating it when the guard is shifted, said guard being adapted to be shifted upon each impression.

5. In a printing machine having a printing bed, a ribbon inking mechanism including an inking ribbon overlying the printing bed, a feed mechanism for advancing the ribbon, a shiftable guard cooperatively disposed with respect to the ribbon and operatively connected with the feed mechanism for actuating it when the guard is shifted, said guard being adapted to be shifted upon each impression, and means for manually actuating the guard for advancing the ribbon independently of impressions.

6. A printing machine of the character described comprising a printing bed, an inking ribbon overlying the bed, a swingable ribbon carrying frame, a platen mounted to be positioned to cooperate with the printing bed and also to be swung away from the printing bed to permit the swinging ribbon frame to swing up to give access to the printing bed, feeding mechanism for the inking ribbon, and operating means for the feeding mechanism disconnected from the platen to leave the same free for adjustment to its two positions but engaged and automatically actuated when the platen is operated for making an impression.

7. In a printing machine, a printing bed, an inking ribbon overlying the same, a platen cooperable therewith, feeding mechanism for the inking ribbon, operating means for the feeding mechanism, and means for moving the" operatihg rriechani sm to 'a' predetermined" extent in one direction said operating mechanism beingf'free-of the platenbut'being actuated "thereby 'in'one direction When'the platenis'movedto m'akean impression.

8. A printiiigmachine'of the character described comprising a printing bed5 an inking V i ribbon overlying the'pri'nting bed, a swing- V able frame carrying the ribbon and position V m able to operatively. dispose the ribbon With respect to the bed or totposition the'ribbon Well aboveth'ebed to permit'o'f access thereto, a platen Supported independently of said" swingable fr ame and adaptedto be c'oo'pe'rw. tivelydisposed With respect to the printing bed andalso adapted to be swung'away from the" printing bed to permit access" thereto and *nieztnsdor operating the platen and for releasably supporting it in either of its two positione- In Witness Whereof, I hereto allix my signature. r

FRITZ JOHNSON.

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