US2842250A - Record feeding means - Google Patents

Record feeding means Download PDF

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Publication number
US2842250A
US2842250A US568340A US56834056A US2842250A US 2842250 A US2842250 A US 2842250A US 568340 A US568340 A US 568340A US 56834056 A US56834056 A US 56834056A US 2842250 A US2842250 A US 2842250A
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United States
Prior art keywords
shaft
record
feed
printer
tape
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Expired - Lifetime
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US568340A
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English (en)
Inventor
Frank J Furman
Otto F Moneagle
Douglas R Wetjen
Albert A Dowd
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International Business Machines Corp
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International Business Machines Corp
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Publication date
Priority to NL202958D priority Critical patent/NL202958A/xx
Priority to US477286A priority patent/US2747717A/en
Priority claimed from US479062A external-priority patent/US2842246A/en
Priority to FR1160660D priority patent/FR1160660A/fr
Priority to GB36433/55A priority patent/GB819465A/en
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Priority to US568340A priority patent/US2842250A/en
Application granted granted Critical
Publication of US2842250A publication Critical patent/US2842250A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/10—Sheet holders, retainers, movable guides, or stationary guides
    • B41J13/103—Sheet holders, retainers, movable guides, or stationary guides for the sheet feeding section
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
    • G06K1/20—Simultaneous marking of record carrier and printing-out of data, e.g. printing-punch
    • G06K1/22—Simultaneous marking and printing on different record carriers, e.g. on different types of record carrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2220/00—Function indicators
    • B65H2220/04—Function indicators for distinguishing adjusting from controlling, i.e. manual adjustments

Definitions

  • This invention relates generally to. paper feeding devices and more particularly to continuous record form feeding means for operating at high speed in cooperation with a record controlled printing machine.
  • Controls are exercised bythese interlock brushes for calling the printer back into operation after suppression, and for regulating the amount of time which the printer is held idle to allow time for record material movement.
  • the second set of preliminary brushes are for the purpose of speed reduction, because whenever a skipping movement of the record material is of any appreciable extent the drive motor is driven at a fast speed (75 inches per second as contrasted with 25 inches per second at slow speed) and it is necessary that the speed be reduced before the feed control perforation reaches the stopping control brush.
  • the secondset of preliminary brushes operate motor controls to slow down the carriage movement before it comes .to a stop.
  • the result is a harmonic motion which operates through pin feed tractors to draw the continuous form rapidly without tearing the marginal perforations; and the motion V lateral positions.
  • vanced form of positive feeding means for handling I records of the multiple ply continuous form variety hav- I 'ing marginal feed control perforations.
  • the tractors are arrangediin pairs, one pair below a platen and the printing line and another pair .above the printing line whereby a secure hold is maint ainedon the webs of record material as they are transported at high speed.
  • Novel forms of clamping arrangements are'provided for keying the tractors .on drive shafts and. also forholding thedriving chains in desired
  • Another object of the invention is the design of'the feed device to be movable or.
  • the feed :device is mounted onta separate frame with a pair of extending slide rods which pass through holdersin the printerframe.
  • the :slide rods are long enough to allowretraction of the feeding means overa distance of several inches so that the record holding .tractors andplaten which are normally spaced close to the printer heads may be drawn away far enough toallow manipulation. of the record material over the feeding pins andaccessgiven .to the feeding devices in general for repairand servicing.
  • a unique form of connecting means is provided between the printer frame and the retractable feeding devices. The two units are held together with heavy latches and these latches are operated eccentrically so.
  • latching instrumentalities when it is desired to separate the two units.
  • another feature of'the invention is controlled further to come gradually to a stop without which is provided to allow adjustment for various thicknesses of the record material which may vary from one ply to a substantial number of copies.
  • the latching block' which normally holds the two units very closely spaced may be operated through an eccentric with a manipulative knobso that the connection between the two units is loosened or shifted relatively so that they are joined with a larger amountof spacing between them.
  • Another object of the invention is the provision of a means-for shifting the record material slightly longitudinally so that the printing line may be made to coincide with prearranged block positions of the record material.
  • This is .done .by the manipulation of a Worm gear and worm wheel arrangement in the driving connections and interposed between the driving clutch and the feeding tractors.
  • the helical ridges of the worm gear are used as a planetary driving :tooth in cooperation with a driven sun gear.
  • a Vernier knob is turned and rotates the worm gear slightly for relative displacement.
  • Another object of the invention is to provide means for automatically untilting the lower pair of feed tractors when the feeding device is retracted to an open position.
  • These lower tractors are normally in a backwardly slanted position and would be difiicultto reach were they not pivoted and allowed to swing to a vertical position when the unit is retracted.
  • Fig. 1 is a perspective view showing the main icome ponents of the feeding device and the drive connections thereto.
  • Fig. 2 is a left side elevation view showing the control tape and the three cooperating sets of control brushes. This view also illustrates the mounting'of the drive motor and the connections therefrom to the pairs of tractor pin feed devices.
  • Fig. 3 is a side elevation view showing the random type clutch and the engaging and.disengaging control magnets.
  • Fig- 4 is a sectional elevation view taken along line 4-4 in Fig. 3 and showing the interior construction of the clutch.
  • Fig. 5 is an exploded perspective view of the interior parts of the clutch showing the ratchet wheel control over the inner pry bar for engaging and disengaging the interior drive elements.
  • Figs. 6a and 6b when taken together provide a front elevation view of the entire width of the paper feed unit.
  • Fig. 7- is a sectional view taken along line 7-7 in Fig. 2- and showing the interior construction of one of the four tractor pin feed devices.
  • This view illustrates the wedging action of a ring for clamping the unit in a lateral position to take continuous forms of a specified width.
  • the view also shows the manner of keying the tractor drive sprocket to the drive shaft.
  • Fig. 8 is a side elevation view showing the latching means for connecting the paper feed unit to the printer and the means cooperating with the lower pair of tractor devices for tilting them when the feed unit is brought into the print receiving position.
  • Fig. 9 is a detail view in side elevation showing the latching device for holding the feed unit when it is drawn outward away from the printer and into a retracted position.
  • Fig. 10 is a plan view of the latching devices shown in Fig. 8 and further illustrates the manipulative eccentric controls for varying the latch plate positions in accordance with desired paper thickness selection.
  • the base comprises a heavy casting 30 which is formed with four downwardly projecting legs 31 each of which is formed with a central opening through which two heavy shafts or extension slide rods 32 are fastened and project towards the right where they run into and through guide blocks 33 and 34 extending from the sides of the printer frame 36 which comprises side channels or heavy structural rails 27 and 28 (Fig. 10).
  • the two projecting rods extending from the bottom of the feed unit are secured thereto and are thrust movably into stationary hearings in the printer frame. It is on these two shafts that the entire feed unit rests and is retractable away from the normally closed and latched print receiving position where it is shown in Figs. 8 and 10.
  • FIG. 8 Slidably mounted laterally on the top of casting 30 is another heavy casting 40 which is formed in the shape of an arch as seen in Fig. 2.
  • This upper casting 40 rests loosely on the top of the frame 30 but is keyed thereto as illustrated in Fig. 8 where it is seen that attached to the lower right end is an L-shaped member 41 which projects into a notch formed in the side wall of casting 30.
  • casting 40 is formed with a double shouldered extension 42, the lower part of which projects into a groove 43 and another groove 44 receives a projecting bar 45 which is attached to the top of a rearward extension 46 formed out of the rear of frame 30.
  • An adjustable confining block 48 holds frame 40 forwardly positioned in groove 43.
  • main vertical side frames 50 and 51 of the feed unit are attached at the sides of frame casting 40 and spaced thereby to hold many of the feeding controls and the cross shafts between these main frames.
  • Attached to side frames 50 and 51 are a number of brackets for holding several sub-assemblies for different feed controls each of which is coordinated with the feeding devices in general.
  • a bracket 54 which serves to hold the magnetic brake housing MC which is in cooperation with the main tractor drive shaft 55.
  • a bracket 56 for supporting the parts cooperating with a drive clutch.
  • On the outside of frame 50 are a number of supporting devices including a bracket 57 for holding the differential drive gearing including the worm, gearing for the vernier line adjustment device.
  • bracket or auxiliary frame 58 is the support for the three sets of tape sensing brushes and the cooperating contact rollers and driving pin feed drum for operating the tape.
  • a third frame 59 is supported by studs 60 and it projects to form bearings for receiving projecting shafts to hold certain of the drive gears. Extending across the paper feed unit are several shafts and bars which not only support feeding devices, but also act as stiffening means between the frames.
  • One such shaft is the shaft 62 which is the mounting means for the upper pair of tractor feed devices.
  • Another such device is the bar 63 which acts as the platen to support the record forms when they are receiving the blows of the print recording heads.
  • the printer with which the paper feed is illustrated is of the kind involving a wire printer operating in serial order at high speed and is set forth in detail in copending patent applications Serial Nos. 479,106, filed on December 31, 1954, and 479,107, filed on December 31, 1954.
  • Fig. 2 it is seen that the feed devices are driven by a motor M which is fastened to the top of the upper casting 40.
  • a blower B (Fig. 6b) keeps the motor cool.
  • This motor M is of a special variable speed type which is disclosed more fully in the copending application Serial No. 476,655, filed on December 2l, 1954, by W. F. Morgan.
  • On the motor shaft is a pulley 66 for the main drive belt 67 (Fig. 6a), which is of the inner toothed type or Gilmer timing belt form for a more positive drive to a toothed pulley wheel 68 loosely mounted on the drive shaft 69 but connected to a clutch drum 70.
  • the drive of the continuously rotating drum 70 is at times communicated to the drive shaft 69 which extends to the left (Fig. 1) to the tape feeding pin wheel or drum 73 and a gear 74 which is the first of a train of gears in the drive.
  • the drive connections are not direct to the continuous strip advancement tractors but are made through two indirect connections for two main reasons.
  • the first reason for indirection is to provide a planetary form of connection wherein vernier adjustments or slight variations may be made in record to printer relationship.
  • the second reason for the circumlocutionary drive is to provide means for a change from 6 to 8 lines per inch of spacing whenever closer printing is desired.
  • the drive continues from gear 74 and through a loose idler gear 76 which is in mesh with a gear 77 which is loose on line space adjustment shaft 78 but fastened to a hub 79 which also holds the loose continuously rotating part 80 of a toothed clutch 8081 normally connected by the shifting action of a lever 82 which carries rollers 83 to open the clutch only on occasion for manual adjustment.
  • the drive continues through clutch disk 81 which has on it a plate 84 with brackets 85, 86 and '87 carrying planetary driving connections.
  • -A worm gear 88 and a helical gear 89 are on a short common shaft 90 suspended between brackets 85 and 86.
  • Theformer is in mesh with a worm wheel 91 fastened to shaft 78,
  • the vernier knob 98 is turned one way or'the other to liftorlower' the paper relative to the printer.
  • the connected gear 96 is also turned and cornmunicates movement to the meshing pinion 95.
  • pinion 95 is on shaft 93 with the helical gear 92, the latter is revolved and rotates the associated gear 89 which in turn rotates the worm gear 88.
  • This motion serves to vary the angular relationship between the plate 84 which is the holder for the worm gear 88 and the worm .wheel 91 which is fastened to the feed driving shaft 78.
  • the planetary arrangement including worm 88 remains in constant readiness for ordinary line spacing and skip feeding movement regardless of the relative adjustment through the vernier knob.
  • a frictional type of spring finger or detent 101 is fastened to the side of plate 84 and carried around with clutch member 81.
  • This detent extends over into contact with the periphery of a line space detent plate 102 fastened to the side of clutch member 80 and formed with a series of regularly spaced notchesrinto which a V- shaped extension of detent 101 projects and is located as the knob 99 is turned by hand for linespace adjustment.
  • Detent 1'01 snaps into notch after notch when the line space knob is adjusted, and this serves for definitelimiration of the desired number of manipulated spaces.
  • the driving train of gears is operated directly by the outer knob 99.
  • the lever 82 is operated to open clutch 80-81.
  • the knob 99 is fastened to shaft 78 and there is direct communication of the rotation given the knob to the drive gear 100 at the other end of the shaft.
  • Gear 100 is seen to be in mesh with another gear 104 secured to the shaft 105 which is the axis for the idler 76 already mentioned.
  • This shaft 105 projects towards the right and, at that end carries another gear 106, which is fastened thereon and in mesh with a wide gear 107 fastened to a sleeve 108 slidably mounted on a shaft 109.
  • the wide gear 107 is positionedjas shown to communicate the drive of gear 106 to another gear 110 which is loosely mounted on shaft 105 but :connected to a collar 111 which also carriesa slightly larger ,gear 112.
  • Gear 112 meshes with gear 113 which .is fastened to the shaft 55 already mentioned as being the. driver for the two pairs of sprockets serving to actuate the pin feeding tractors.
  • gear 113 which .is fastened to the shaft 55 already mentioned as being the. driver for the two pairs of sprockets serving to actuate the pin feeding tractors.
  • the driving connections mentioned are proportioned for spacing :sixlines 1001116 inch on the record strip R adjusted by the feeding :tractors.
  • the motion 5 is communicated directly to the upper pair of pin feed tractors UT1 and UT2 which have extending pins mounted on chains to. engage several of the marginal pin feed openings along the sides of all plies of the. continuous record material'R.
  • the motion of the tractor pins upward serves to advance the material upward past the printing line which is coincident with the platen bar 63.
  • the shaft 55 is provided with a pair of attached sprockets 118 onto which is drawn a pair of belts 1'19 and for driving on opposite sides of the feed device.
  • belts 119 and 120 are of the positive type which are formed with inner toothed construction to cooperate with precise timing relationships with the driving sprockets 1.18 and a similar pair of sprockets 121 which are fastened near the ends of a shaft 122 which is the driver for the lower pair of pin feed tractors LTl and LTZ.
  • These lower tractors also each have several pins engaging simultaneously in the marginal openings of the record material.
  • the four tractors serve not only to carry the record material rapidly away from the platen, but also help to bring the material out of the magazine and into print receiving position without tearing the marginal areas when operating at high speed.
  • the driving means is provided with a brake at the end of the main tractor drive shaft 55.
  • the brake serves to reduce oscillations and rebounding of the feed parts after they are stopped and during printing. In this way, paper shifting is avoided during the period of'printing.
  • the shaft projects into a brake unit BR.
  • This brake construction is better shown in the right of Fig. 6b where it is noted that the bracket 54 on side frame 51 holds the stationary part of the brake unit.
  • the armature plate 127 fastened to .lever 126 is placed directly beneath thecores of the magnets on either side.
  • the lever 126 When in the normal stopping control position, the lever 126 is rocked upward at the left by the stop control magnet SP and when operated for clutch engaging or starting control, the same assembly is rocked upwardly at the right in a counterclockwise direction by the action of start magnet ST.
  • a contact 1 28 is closed by counterclockwise motion of lever 126 whenever the start magnet ST is made effective.
  • the rocking motion of lever 126 is limited by an adjustable stop stud 130.
  • a tooth shape 131 which cooperates with the ratchet teeth on the wheel 71 which is one of a pair of relatively movable ratchet control clutch wheels 71 and 72.
  • the companion ratchet wheel 72 has teeth facing in the opposite direction and is normally engaged by a toothed clutch pawl 132 which is formed with a bent lug 134 overhanging the top of lever 126 to partake of its movement.
  • A- coil spring 135 is coiled around the pawl shaft 136 and tends to hold the pawl 132 down into engagement with the teeth of ratchet wheel 72 and prevent it from rotating in a clockwise direction.
  • lever 126 When the lever 126 is operated counterclockwise by energization of the start magnet ST, it not only lifts the tooth 131 away from ratchet wheel 71, but it also actuates pawl 132 through the lug 134 to disengage 132 from the teeth of the other wheel 72.
  • the object of releasing the two clutch wheels 71 and '72 is to allow the heavy spring 138 to operate and tend to draw together the two wheels in opposite directions a slight amount which serves to exercise an outward camming action on a pair of inner wedges or operating dogs 139 and 140 which have outwardly projecting fingers 141, 141 and 142, 142 for engaging the inner circular area of the hollow clutch drum 70.
  • Spring 138 is at one end connected directly to the Wheel 72 and at the other end it is connected to a stud 143 which projects through a camming member or pry bar 144 and also projects into a slot 146 cut into the other ratchet wheel 71.
  • Member 144 is pivotally mounted on wheel 72 by means of an eccentric stud 147 which is adjustably rotated and locked into position by an attached plate 148 which is formed with an arcuate slot 149 through which projects a screw 150 to tighten the plate as adjusted.
  • the position of the eccentric pin 147 is critical because the lower end of pry member 144 is formed with an overturned projection or operating piece 151 which contacts with the left side of the lower end of the clutch engaging member 140.
  • the pry bar 144 forces the shoe 140 against the drum 70. Since the shoe 140 makes angular contact with the drum, it tends to slide along the inside surface of the drum. This tendency is restrained by the other finger 142 which is forced into contact with the inside surface of the drum; This contact is also angular; therefore,
  • Motion of the drum 70 is communicated from the drum through the two shoes, and through the member 144 and studs 157 to the ratchet wheel 72 and attached bushing 153 and into the shaft 69 attached thereto. Then the clutch parts and shaft 69 are rotated in a counterclockwise direction as shown in Fig. 3 as long as the teeth 131 and 132 of the armature lever and pawl are held raised away from the ratchet-wheels.
  • the other ratchet wheel 72 is carried along for a slight extent with one of the abutting teeth going beyond the left of pawl 132 but prevented from being retracted by the action of spring 138 because the pawl snaps into place before the wheel can move clockwise.
  • the clutch is of the form known as a random engaging clutch wherein the parts have no fixed relationship relative to the driving drum, and the inner clutch parts are operated universally by outer engagement with any of the plurality of teeth on the ratchet wheels.
  • the clutch is available to start from any position and to stop at any position.
  • the ratchet teeth on the clutch wheels have a relationship with a line space movement of the drive connections, so that rapid operation of the start and stop magnets is productive of single line space movement.
  • latch contacts or clutch switch contacts 128 which are closed by lever 126 upon a slight counterclockwise start movement so that the clutch is barely released before contacts 128 are closed to call stop magnet SP into action for a single-space operation.
  • a control tape TP is provided to furnish a flexible form of predetermined programming for locating the record forms with respect to the printing line so that heading print blocks, item print and total print are started and stopped wherever desired on the forms.
  • the tape TP as shown in Figs. 1, 2 and 6a is an endless paper band which is either equal in length to the related form or a multiple fraction of the form length in the cases of short forms.
  • the tape is a narrow paper band which is driven by the pin studded drum 73 with the pins 158 thereon cooperating with a central line of feed perforations punched in the tape.
  • the tape is advanced in synchronism with the movement of the record strip R and describes a triangular path in moving around a sleeve 159 at the rear and then passing successive ly around contact rollers 160, 161 and 162, the latter being on the feed drum 73.
  • the three contact rollers or cylinders 160, 161 and 162 are'placed opposite three lines or sets of tape sensing brushes, interlock brushes IN,
  • the three cooperating contact rollers arelsupported outside the left side. frameon a separate small frame 58 fastened to'frame 50 by]. extending studs and brackets.
  • the driveshaft 69 extends through frame 58 and carries drum 73 which extends outwardly.
  • the other two contact rollers 1 160 and 161 are supported at the inner end on bearings in the frame and project outwardly without support atthe outer ends. 7 p
  • the tape TP (Fig. 2) is held taut by theholder for the rearsleeve 159. which comprises an arm 164 which is rocked to the proper angular position and secured to the side frame 50-by means of ,a.,nut :andSP -ing washer 165 acting on a hub of the arm.
  • an arm 164 which is rocked to the proper angular position and secured to the side frame 50-by means of ,a.,nut :andSP -ing washer 165 acting on a hub of the arm.
  • Fig. 2 it is also seen that the three lines or sets of tape sensing brushes are mounted in a separately mov-' able frame 166 pivoted at 167 on a stud projecting from the frame 58.
  • the frame 166 is in the form ofa channel with a U-shapedcross section and hasside plates for confining the ends of insulation blocks 168, three of which are spaced between the frame side plates to-hold the sets of sensing brushes.
  • frame 166. When frame 166.is in the operating position it closes the contacts of a switch .169-fastened to frame-58 and it is in this position that a latch 17;0 pivoted onthe top of the frame catc'hes over a square stud 1-71jextending outwardly from one of the main side frames- 50.
  • a comb-shaped insulation member 173 which confines each sensing brush to a particularpat-h on the'itape.
  • These paths around the tape are also'ttermed channels and it is in these channels where the tape feed control perforations are placed differentially to predetermined various stop and. start positions related to. positions on the continuous record-forms R.
  • the comb formation of guide :block 173 there are 13 notches, 6 on one side of the tape feedpins 158.. and 7 on the other side.
  • the extra'position, or 7th position at the extreme right, is used for a common contact brush which carries current to or from the contact roller.
  • the other 12 brush positions are used mainly for several skipping controls and one is reserved for overflow control.
  • a perforation 116 therein in any channel passes in succession first under the related interlock brush IN at the bottom and next passes'th'e slowdownbrush SL'in the middle and finally reaches the stop control brush ST at the top.
  • the particular tape perforation of a certain channel may be anywhere short of the stop position brushes when a skip is initiated related to that particular channel. It is by means of these spacings of the three brush sets relative to the tape that the controls are preconditioned before skipping is initiated by the presence or absence of controls initiated by the particular tape hole passingor not passing the two lower sets of brushes.
  • the skip is to start at high speed andinvolve a shorter loss of printer time. Should a skipinitiationfind both lower controls activated, then that is a sign that the skip is tobe a very short one involving less thanninedine spaces and it is to proceed at slow speed and'involvea still shorter loss interval of printer time or no loss at all.
  • the card reading printer has over the feed devices because it is the printer which responds to the punched 1 ecord card control and printson the record form according to how many lines of heading data, item data and classes of totals are called for by a particular group orgroups of control cards.
  • the printer has group control devices, heading'card control by X and no X punchings in the cards and program controls for various classes of items and totals such as minor, intermediate andmajor 7 controls. These controls originating within the card reader andprinter are productive of impulses which may be used selectively to control the spacing or long.;fee,d skipping operations of the record strip feeding devices.
  • the channels of the tape TP are selected by'thereco'rd card controls in the printer. As the cards feed they are sensed not only to select the data to be printed, but also the dispositionof such printing by placement on a form. In most instances the printer initiates feeding for line spacing or skipping and the tape controls effect stoppage as determined by the'holes in the tape. The exception is the overflow control whereby the tape both initiates and stops an ejection of the record material from the end of one form to the top of the next form. Tape channel selection is plugga'ble and of selective control from a number of card controlled sources. It may come from X holes, inheading cards, ;or digit selection holes in any card, or class of totals on total cycles, or by group changes without total printing.
  • the feeding controls for double space, triple space skip to 1, skip to 2, etc. are all pluggable to receive control impulses from the card reader and printer. They take precedence over each other in the order mentioned with single line spacing dominating all.
  • the skip to controls refer to the tape sensing brushes as they are picked up in successive order so that when the skip to 5 control is plugged, it means thatthe fifth tape brush is to'sense a tape perforation and control the stop magnets regardless of tape perforations in all lower channel positions. Ordinarily it is for only the advances of four or more spaces that skip stop perforation con trol is put-in the tape to determine where a headingis to start, where item impressions are to start, 'or where a total impression is to be placed.
  • the endsensing brush or twelfth brush of the stop brush set in cooperation with a perforation at the side of the tape, determines where the overflow skip is "to start.
  • Any predetermined posi: tion may be chosen as the last line of a form and the These forms of channel selection control tape punched in the twelfth channel at a corresponding position to initiate overflow skipping.
  • the feeding devices operate at two speeds which are governed by thecontrol over the variable speed motor which is operable at a record movement speed of 75 inches per second for skips of more than nine line spaces, end at the slower speed of 25 inches per second for skips of less than nine line spaces. These changes of speed since they are not abrupt are smoothed out in a sort of harmonic motion change or gradual variation from high to low speed.
  • the demand for high-speed operation is automatically called for by a skip when a tape control perforation fails to make evident the passage beyond the slowdown brushes SL at the time the skip is initiated.
  • the feeding devices are provided with line spacing controls for single, double and triple spacing.
  • the selection of control is made by operation of pluggable controls described hereinafter with relation to the wiring diagram.
  • a single space control is the normal operation and will take place invariably in conjunction with serial order printing unless the feed controls are signaled otherwise.
  • the line spacing controls involve the use of the commutator 175 best shown in Fig. 6a where it is seen to be connected to shaft 69 and placed near the outer face of the side frame 50.
  • Cooperating with the commutator are four sensing brushes best shown in Fig. 2 where they are seen to project radially from an arcuate block of insulation 176 which is fastened to the outside of frame 50.
  • commutator 175 has a continuous metallic band in one area and a regular series of separate segments or metal inserts spaced apart the equivalent of three line spaces.
  • Cooperating with the continuous commutator band is a common line space conducting brush LSC (Fig. 2).
  • the other three brushes LS1, LS2, and LS3 are spaced apart with their operating ends touching the commutator where it has the separated segments.
  • One of these three brushes is always active and in contact with a segment and it may be any one of the three.
  • When one is in the active position the other two are spaced one and two spaces respectively away from other commutator segments.
  • the wiring controls later considered in connection with the wiring diagram are flexible so that upon a demand from the printer for one line space, such a demand is communicated to the particular one of the three line space control brushes which happens to be on an active segment.
  • the wiring connections serve to initiate a pair of impulses to activate the start and stop magnets of the random clutch to cause the shift of one line space which also moves the commutator segments to pass from one control brush to another.
  • a device for producing manually adjusted lateral movement of the record forms and the feed devices cooperating therewith by shifting the upper frame comprising the main side frames 50 and 51 and the arch-shaped casting 40 (Fig. 2) relative to the heavy lower casting 30 (Fig. 8). It is already noted herein before that the upper portion is slidably arranged relative to the lower portion by means of the notched constr uctionshown at the left in Fig. 8 and involving the 'a gear 180. In mesh with gear 1 (Figs. 2 and 6a) is 'an -idler gear 181 having in cooperation therewith a spring deterit 182 which is formed with a V-shaped portion extending between the teeth of the gear.
  • a drive pinion 183 which is loosely mounted on a stud 184 extending from the side frame 50, and connected to the pinion is an adjustment disk 185 from which there projects a handle 186.
  • the train of gearing drives the screw 179 and since the screw is immovable axially between the side frames 50 and 51 it merely revolves therein, but the threaded connection to block 178 (Fig. 8) causes the production of relative movement between the two main frames. In other words, the whole upper section of the feed unit is shifted laterally along the top of the lower frame 30 and in this way the sets of tractors and record strip R (Fig.
  • FIG. 7 An example is given in Fig. 7 of the construction of one of the pin feed tractor devices. This sectional showing also applies in general to the construction of the other three similar units. Assuming that the unit shown in Fig. 7 is a lower tractor unit LTl, then it is driven by shaft 122 and supported on shaft 223. The unit is built around a heavy block 188 which has an inner section of tubing 189 slidable on the guide shaft 223. Attached to 'one side of block 188 is a plate 190 which acts as a support for a cover, not shown. A bushing 191 on shaft 122 is supported by'block 188 and loosely mounted with respect to plate 190 but guided thereby and keyed to the drive shaft 122 by a tapered slidable key 192.
  • a sprocket 193 over which is drawn the chain 194, the regularly spaced links of which are formed with a U-shaped holder 195 having an extension 196 from which there projects a feeding pin 197.
  • the chain 194 is drawn around another sprocket 198 which has aifixed thereon a stud 199 carrying one section or inner race of a ball bearing 200, the outer race of which is secured to the elongated frame portion 201 which is formed as part of block 188 and provides an elliptical form of support over which the propections 196 are slidable and which forms a sort of backing for the thin projections 196 carrying the feeding pins 197.
  • the tractors are provided with means for placing them axially along the shafts 122 and 223 and clamping them there as well as providing for their shift or removal whenever desired.
  • the inner end of sleeve 189 is formed with a thread 202 and cooperating therewith is a threaded adjustment nut 204 which is loosely mounted on shaft 223 and formed with a cooperating thread and also with an inner shoulder 205 which confines a split ring 207 of nylon which is suitable to be wedged into the tapered formation 206 formed as a flared end of the sleeve 189.
  • the unit may be placed in any axial position along shaft 223 and then the nut 204 may be screwed down and tightened to cause the ring 207 to be biased into a wed'ging position against the flared formation 206 as forced by the shoulder 205.
  • the upper sleeve 191 also has a section of threading 209 for clamping the tapered key 192 against the shaft 55.
  • Cooperating with this threaded section 209 is a nut 210 with an inner shoulder 211 passing behind the raised "13 i end formation of the key 192. "For further confining the'key and causing it to move with nut 21 0,there is secured on the outer face ofthe nut a circular plate 212 which has a restricted opening around shaft 122 .and
  • the lower tractors assume a vertical position as shown dotted at the left. This is done to make the feed pins more accessible and to insure that the record strip stays on the pins until it is drawn taut across an adjustable guide cylinder 214 which is fastened across the inside of the printer frame.
  • the lower tractor LT1 When brought to the right and into, the operating position, the lower tractor LT1 is seen to be slanted to agree with the angle of a paper guide plate 215 which is secured to the feed unit casting 30. It also agrees in position with a straight line path from where the record curves around the guide cylinder 214. Therefore,the hinging or pivotal construction of the lower tractors about to be described is furnished for the purposes of affording automatic angular adjustment of the lower pin feed chains as mentioned.
  • the lower tractor drive shaft 122 (Figs. 6a and 6b) passes through two rectangular block's 217 and 218, one near the inner face of each side frame 50 and 51.
  • the blocks are each pivoted on a bushing 219 (Fig.8) extending from the side frame and concentric with the shaft 122.
  • the two blocks 217 and 218 are pivotally mounted with respect to the axis of shaft 122 without putting any burden or torque on the shaft.
  • Attached'to the inside faces of the blocks are spring holders and cam plates 220 and 221 to which are connected springs 222 tending to pull the blocks to a vertical position.
  • the two blocks carry between them a shaft 223 which is the supporting means for the lower tractors and corresponds to shaft 62 of the upper tractors. It is shaft 223 and the tractors thereon which are swung in and out of the vertical position when the holder blocks are rocked about the bearings 219. I
  • cam plates 220 and 221 extend downwardly an appreciable extent, the former being bent offset at 224 and the latter extending straight down. Both lower plate ends are in the path of an adjustment rod or shaft 225, (Fig. 10) which extends across the printer frame.
  • the arrange ment is such that when the feed unit is pushed toward the printer to be latched thereon, the lower ends of plates 220, 221 strike against the side of shaft 225 and for the last inch or two, automatically swing the lower tractor frame of blocks 2 17, 218 andshaft 223, back to the angular position shown in full lines in Fig. 8.
  • the purpose of studs 227 is to properly position the lower tractors in line with the paper path.
  • a mechanical sensing finger or lever which ordinarily rides along the surface of the advancing record material and changes its position when there is a' break or absence of thematerial. It is already noted with refer-, ence to Fig.- 8 that there projects beyond the front of the base casting 30 of the paper feed unit, a sheet guide 215 extending across the feed unit front end position at an angle coinciding with the angle'of the path of the record material.
  • This guide 215 is a form of backing plate againstwhich the ,record material rests and it is slotted vertically in one; position. opposite-a detecting finger or sensing arm 230 attached toand rocking with a shaft 231 (Fig.
  • he shaft 231 extends beyond the 'bracket 232 (Fig. 10) at the left and there it carries a bell crank lever 235 which is attachedto the shaft and formed with a horizontal arm to which is attached one endof a spring 236 tending to rock it in-a counterclockwise direction (Fig. 8).
  • the upper end of spring 236 is attached to an extension 237 fastened to bracket 232.
  • crank 235 The vertical arm of crank 235 is threaded and there extends from'it an adjustable screw, the head of which cooperates with the plunger of a micro switch 238.
  • the switch is fastened to the side of bracket 232 along with the extension 237.. d
  • the feed unit is made retractable with respect to the printer by being slidable thereon through the heavy extending slide rods passing through the blocks fastened to the printer frame. Now it is appropriate to explain how the feed unit is latched in either of the positions, and the first one to 'be considered is the position wherein the feed unit is latched close to the printer and in position to receive printing impressions on the record material.
  • a pair of latches 240 and 242 engage with shouldered latching plates 241 and 243 attached to the sides of the blocks 232 and 233 already mentioned as being forms of adjustable brackets secured to opposite sides of the printer frame.
  • the latches 240 and 242 are pivotally mounted to swing in a horizontal plane from the pivots provided in the base casting 30- of the feed unit.
  • the side view of one of such pivotal mountings is shown in Fig. 8 and there it is seen that a vertical shaft 245 passes through a pair of extending ears 246 and 247 formed on casting 30. Between ears 246 and 247 there ispinned to shaft 245 an operating arm casting 248 which is shown in section in Fig.
  • the disengaging control of the single lever 249 is communicated from the left side latch 240 (Fig. to the other latch 242 by means of a pair of rods 254 and 255 extending across the bottom of the feed unit. This is done by attaching to the lower ends of the two vertical shafts 245, double ended levers 256 which are formed with holes to receive the ends of the rods 254 and 255 which are connected to the levers on the opposite shafts 245.
  • Fig. '10 it is seen that the rods crossnear the center of the feed unit and this is done because it is necessary to reverse the direction of movement of the latch operating parts because the latches swing inwardly in opposite directions.
  • the latches are released by movement of the handle in a novel manner by a combination of movements involving the eccentricity of the pivot and a positive rotary actuator.
  • the eccentric manner of mounting the latches of shafts 245 is illustrated at the right in Fig. 10 where it is seen that the portion of the shaft 245 passing through the pivoting end of latch 242 is formed circular with a ring or crank portion 258 which is eccentric with respect to the long shaft portion 245 connected therewith.
  • This offset arrangement 258 is also shown in dotted lines in Fig. 8. With this kind of construction it is apparent that when lever 249 (Fig.
  • each shaft 245 Loosely pivoted on each shaft 245 (Fig. 8) is an arm 262 which is on the same hub with the double ended lever 256 and located just under the latch 240. Arm 262 is formed with an upstanding lug or tab 253 which is keyed into a notch 257 in the eccentric portion 258 for ease of assembly and positive connection. This arm 262 (Fig. 10) is also formed with an upwardly positioned extension 263 on which there is an adjustment screw 264.
  • the screw end is in the path of a projection 265 formed on the latch 240 near the pivot.
  • a similar arrangement of lever 262, screw 264 and extension 265 is associated with the other latch 242 shown at the right in Fig. 10.
  • the screw 264 on lever 262 comes into an abutting relation with the extension 265 on the latch to swing the latch.
  • the ensuing movement is represented at the right in Fig. 10 where it is seen that the second degree of movement of latch 242 is represented by the dotted line 267 showing the position of the latch after it has been operated both longitudinally and with rotation. Therefore the operation of the lever 249 through a swinging motion of about 90 degrees causes the latches to not only be retracted, but also rocked out of the path of the latch plates so that the paper feed unit isdisengaged and free to be retracted.
  • the carriage latch is so arranged that the natural unlatching movement of the latch handle from right to left (Fig. 8) corresponds with the required carriage movement from right to left when opening.
  • the carriage maybe closed against the printer, regardless of the position of the latch handle with out danger of damage to the latch.
  • Rejoining the feed unit carriage to the printer is also a simple operation.
  • the lever 249 When the lever 249 is rocked back near the home position the first thing that happens is that the springs 252 cause the latches to follow along after the arms 262 and the latches move inward ready for locking action. Then the two units may be brought together and finallythe lever 249 operated to bring it to a closed position against the side frame of the feed'unit and in so doingthe latches are drawn backward andthe two units are joined firmly with a clamping action exercising pressure onthe bumpers.
  • a means for varying the joining position of the feed unit on the printer is provided. This is done by shifting the 'latch plates 241, 243 (Fig. 10) so that the feed unit is held in a position allowing room for a variable number of strips between the ribbon of the printer and the platen bar 63 of the feed unit.
  • the blocks 232 and 233 upon which they are mounted are shifted by eccentric portions such as section 269 shown as formed near one end of shaft 225 and passing through a block 270 which is held in a U-shaped opening in the top of block 232.
  • the square blocks 270 which are formed with cylindrical openings through Which the eccentric portions pass are seated in the U-shaped openings cut into the top of brackets 232 and 233, and these square blocks 270 are held over to one side and made readily removable by a clamping piece 274 which is pressed into position by an adjustable screw 275 which passes through the one side of the U- shaped opening and has a lock nut for holding it and the block 270 in position.
  • a manipulative knob 276 which extends beyond the left side of the printer.
  • the extending portion of the shaft upon which the knob is fixed is supported in a detent block 277 which projects from a bracket 278 fastened to the rail 27 forming part of the printer frame.
  • collars 279 for confining the shaft laterally.
  • Detent block 277 has two diametrically opposite spring loaded ball detents 17 projecting from its outer face against the inner face of the knob 276 which in turn has conical detent holes radially displaced therein so as to give controlled increments of spacing.
  • the bolts 283 are adjustable in order to absorb tolerances in the carriage latch system.
  • the first operation is to adjust the stop bolts 283 so that the latch will draw up the carriage snugly against the printer and yet not require excessive handle pressure to latch. Once adjusted, readjustment of the bolts 233 is never required for changes in paper thickness or for skewed alignment of the platen.
  • a compression spring 287 between block 34 and the inside surface of dog 288 tends to hold it in the angular position to which it is turned.
  • a latching member 290 fastened to the end of the slide rod 32 by nut 291.
  • Latch member 290 is formed with a long upper section and has a cross-sectional area in the form of a reclining L-shape. The long upper portion of 290 normally slides over the top of dog 268 (Fig. 8) which is normally positioned in a horizontal manner, as shown, and the retracting member 290 is unobstructed in the movement to the left until the small lower extension 292 strikes against the lower portion 293 of the dog and rocks it in a clockwise direction. Then the dog assumes the position shown in Fig.
  • a device for adjustably connecting said record feed device to said printing machine comprising a printing device and a record feeding unit associated therewith, said feeding unit having a platen at one end, said printing device having printing instrumentalities on an end facing the platen, of a separable joining means between the feeding unit and the printing device including a pair of spaced latches on one and latch plates on the other which are engaged by said latches, and means for varying the positions of said latch plates, whererby adjustment is made to vary the space between the platen and the printing instrumentalities in accordance with the number of layers of record material comprising the record.
  • record advancing means comprising a line spacing device and means for making 2.
  • the combination set forth in claim 1 with latching a minute adjustments of the record position relative to the spacing device including a set of planetary gearing between the driving and driven parts of said advancing means, said gearing including a worm gear the helical ridges of which act as gear teeth in planetary gearing, and manipulative means for rotating said worm gear to cause minute changes in the position of the planetary gearing and the record position.
  • a record feeding device a plurality of sets of pin feed tractors, said sets being arranged to define a confined record path of less than 180 with respect to 2. reference point on the path, a pivotal mounting for one of said sets, a retracting means for said feeding device, spring means tending to draw said pivoted set to a position wherein the record path is widened when the feeding device is retracted relative to an operator on the record, and an operating means for automatically swinging said pivoted set back to define the confined path when the feeding device is restored from the retracted position.
  • a tractor pin feed unit with a pair of sprockets over which is drawn a chain with extending pins, 21 pair of shafts upon which said unit is mounted, one of said shafts carrying one of said sprockets for driving the unit, and the other shaft carrying a supporting frame for the unit, the other sprocket being mounted for rotation on said frame, means for locking said frame in an adjusted position on said other shaft comprising an annular wedge shaped ring on the frame and embracing said other shaft, a cylindrical split ring to be forced between the wedge ring and said other shaft, and a threaded nut on said frame for forcing said split ring between the Wedge ring and said other shaft, said drive sprocket being keyed to the first-mentioned shaft by a tapered key with a head, and a shouldered nut on said frame to engage said key head and thereby serving to extract the key when it is turned.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mechanical Operated Clutches (AREA)
  • Handling Of Sheets (AREA)
US568340A 1954-12-23 1956-02-28 Record feeding means Expired - Lifetime US2842250A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL202958D NL202958A (enrdf_load_stackoverflow) 1954-12-31
US477286A US2747717A (en) 1954-12-23 1954-12-23 Paper feeding device
FR1160660D FR1160660A (fr) 1954-12-31 1955-12-19 Chariot porte-papier pour machines d'impression par fils fonctionnant à vitesse élevée
GB36433/55A GB819465A (en) 1954-12-31 1955-12-20 Record feeding devices
US568340A US2842250A (en) 1954-12-31 1956-02-28 Record feeding means

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US479062A US2842246A (en) 1954-12-31 1954-12-31 Record feeding devices
US568340A US2842250A (en) 1954-12-31 1956-02-28 Record feeding means

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US2842250A true US2842250A (en) 1958-07-08

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US568340A Expired - Lifetime US2842250A (en) 1954-12-23 1956-02-28 Record feeding means

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US (1) US2842250A (enrdf_load_stackoverflow)
FR (1) FR1160660A (enrdf_load_stackoverflow)
GB (1) GB819465A (enrdf_load_stackoverflow)
NL (1) NL202958A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983355A (en) * 1956-11-22 1961-05-09 W H Smith & Son Alcara Ltd Machine for manipulating sheets or webs of stationery
US3452853A (en) * 1966-10-10 1969-07-01 Data Products Corp Paper drive system
US4344715A (en) * 1980-03-03 1982-08-17 Dataproducts Corporation Means for attaching a tractor drive assembly to a platen
USD294506S (en) 1985-09-13 1988-03-01 Oglander Allen H Label dispenser
US7455628B1 (en) * 2006-01-21 2008-11-25 Stearns Kenneth W Elliptical exercise methods and apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1292673B (de) * 1961-07-24 1969-04-17 Mohawk Data Sciences Corp Vorrichtung fuer den Papiervorschub an einem Typendruckwerk

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564580A (en) * 1948-01-23 1951-08-14 Remington Rand Inc Paper feed mechanism

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564580A (en) * 1948-01-23 1951-08-14 Remington Rand Inc Paper feed mechanism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983355A (en) * 1956-11-22 1961-05-09 W H Smith & Son Alcara Ltd Machine for manipulating sheets or webs of stationery
US3452853A (en) * 1966-10-10 1969-07-01 Data Products Corp Paper drive system
US4344715A (en) * 1980-03-03 1982-08-17 Dataproducts Corporation Means for attaching a tractor drive assembly to a platen
USD294506S (en) 1985-09-13 1988-03-01 Oglander Allen H Label dispenser
US7455628B1 (en) * 2006-01-21 2008-11-25 Stearns Kenneth W Elliptical exercise methods and apparatus

Also Published As

Publication number Publication date
FR1160660A (fr) 1958-07-24
GB819465A (en) 1959-09-02
NL202958A (enrdf_load_stackoverflow)

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