US1688444A - Paper-take-up mechanism - Google Patents

Description

A. S. WHEELBARGER PAPER TAKE-UP MECHANISM Oct. 23, 1928. 1,688,444

Filed Jar 17, 1927 2 Shana-Shoot 1 /N VE N TOR. 14L BERT 5. WHEEL f J/JFGER.

,4 TTORNEX A. S. WHEELBARG ER PAPER TAKE-UP MECHANISM Filed Jan. 17. 1927 2 Shuts-Sheet BARGER INVENTOH.

AZBEPTS. WHEEL A TTORNE 3 Patented a. 23, 1928.

- UNITED STATES PA E T oFFicE.

ALBERT s. WHEELBARGER, or DAYTON, orrro, ASSIGNOR TO OHMER FARE REGISTER COMPANY, OFDAYTOLN, 01110, A CORIPORATION on NEW YORK.

PAPER-TAKE-UP MECHANISM..

Application filed January 17, 1927. Serial No. 161,638.

The object of this invention is to provide a paper takeup mechanism so as to keep the paper fed from a supply roller in ataut condition. While the device is capable of being used everywhere paper is unwound from; a. supply roller, it was primarily designed to retain the ticket and record strips of paper shown in my co-pending applications 53,082, filed August 28, 1925, and 65,532, filed October 29, 1925, in a taut condition. In these applications ticket and record supply rollers are shown but difficulty has been experienced on account of the paper becoming slack. This was occasioned because of the fact that when the paper was originally inserted it probably was not properly tensioned. Ordinary feeding methods heretofore known did not take up this surplus paper. The present invention overcomes this objection.

Another object of the invention is to pro vide a mechanism which while keeping the paper taut will permit a certain amount to be readily unwound from the supply rollers, for instance, when the paper is being inserted in the machine, but thereafter will take up'the surplus paper. 1

While I have mentioned that the invention was primarily designed to overcome an objcction existing in; the machines shown in my 7 previous applications, it is readily apparent that the invention is capable of being used in cash registers, adding machines, andfor a multitude of other purposes. I have, by way of illustration, shown the invention inconnection with a type of machine similar to that shown in my previousapplications. 7

Referring more particularly'to the drawings Fig. 1 1s a plan'view of a part of the print- Fig; 6 is an elevational view onthe line 66 of Fig.4 looking in the direction of the arrow. 1 I

Fig. 7 is an elevational view on the line 77 of Fig. 4. i

mechanism shown in Fig. 3, and

Fig. 8 is a detailed view of the takeup' Fig. 9 is a cross-sectional view on the line I 9-'9 of Fig. 3.

A main actuating shaft 1 is provided with. two disks 2 connected to pitmen 3 which are operatively connected to a shaft 4 which carries the platen 5 which presses the strip of paper 6 against the printing disks 7. The shaft 4 is mounted on armsS pivotedon col-- lars 10 and 11. The shaft 4 also carries an arm 13 having a lug 14 connectedto a spring 12 secured to an armS by means of a-pin 15, WlllCll arm 13 carries an inking roller 16 anda guard 17, which guard preventsthe paper roller 16.

from coming into contact with the inking One of the arms 8 is provided with an eX-' tension 18 which carries apin 19 which pin engages a slotted member -20connected to a pivoted arm21, which carries a double-nosed dog 22, which dog-engages a ratchet-'23 secured to a shaft 24 which shaft is provided with a knob 25 by which the shaft may be ro- "tated manually if necessary. The dog 22 is provided with a slot 26 which receives the'pin is carried near the upper end of the dog 22 and the spring 29 interposed between the pins 27 and 28. The spring 29 performs the func- '27 carried by the pivoted arm 21. A pin 28.

tion of causing'the dog 22 .toalways engage the teeth .of the ratchet 23.

The slotted member 20 is provided with a pin. 30 to which is secured a spring 31 hav-' ing its other end secured to the shaft 4, the object of the spring 31 being to hold the member 20 against the pin 19. The member 20 is provided with a slot 32in which slides a' pin 33 carried by 'abell crank lever 34 fulcrumed on the shaft 35, the arm 36 of the lever 34 carrying a roller 37 which engages. takeup roll 38. The takeup roll 38 is mounted on a shaft 39which shaft is journaled in the shaft 24 and in one of the sidewalls 40 of the machine.-. The shaft 39 is provided with a 'slot n Lu 41 which received a J-shaped rod 42, between which and the shaft 39 the paper is an:

chored. The end 43 of the rod 42 which rests against the disk 43 carried by the shaft 39 also provides a connection bet-ween the shaft 39 and the shaft 24 by fitting into a slot 44 in the inner end of the shaft 24. The supply roll of paper 45 is mounted on the shaft 9, which shaft carries a disk 46 slidably mounted on the shaft 9, but being held against rotative movement thereon by flat sides 47 of the shaft 9, the disk 46 being provided with a similarly shaped aperture. A spring spider 48 is rigidly secured to the outer end of the shaft- 9 and presses the disk 46 inwardly. The other end of the shaft 9 is provided with a screw-threaded aperture 49 which receives a threaded shaft 50 which carries a disk 51. By this threaded connec- 2 tion the distance between the disks 46 and other end of the shaft 9 is provided with a projection 52 received in the slot 53 in the shaft 57 which shaft carries a disk 58 provided with a pin 59 which engages one of the arms of the spider 48. A collar 66 surrounds the shaft 57, and around the collar 60 is'a helical spring'61 anchored in the disk 58 at 62 and attached to a pin 63 on a stationary collar 64 secured to the collar 60. The shaft 57 is also provided with a disk 65 which disk carries a lug 66, the disk and lug being provided with aligned valleys 67 capable of receiving a gear tooth. The lug, 66 is of a width equal to two gear teeth The valley in the 111g 66 in effect forms two teeth. A

pinion 68. is mounted on a stud shaft 69, all

of the teeth except three of the pinion being double the width of the disk 65 or the com-.

bined width of the disk 65 and lug 66. These long teeth are denoted by the reference charactor whilethe three short teeth which engage the valley 67 in the lug 66 are denoted by the reference character 71. The three short teeth alternate with the long teeth.

lVhen it is desired to insert a new roll of paper 45, the knob 55 is pulled outwardly so thatthe shaft 9 and disks 46 and 51 can be removed. A threaded screw 50 is unscrewed" from the shaft 9by simply rotating the disk 51. The paper can now be slipped over, the

shaft 9 until it comes into position against the disk 46. The screw 50 may 'now be 46 against the tensionof the spider;48, so

that there will be more or less friction between the disks 46 and 51 and the roll as v the paper is unwound while the disks are held stationary. The disks are, however, permitted to rotate for a predetermined distance. This free rotation is advisable because as the paperis inserted on the shaft 9 it is necessary to train the paper over the platen and onto the takeup roll as shown in V arrows shown in Fig. 8. After rotating one complete revolution, the two teeth on the lug 66 engage one of the longj teeth 70 of the pinion 68 rotating it one tooth, the periphery V of the disk 65 thereafter passing between the end of one of the short teeth 71 and the sidewall '40, the two adjacent long teeth 70 engaging the periphery of the disk 65 and looking it against furtherrotation. When the disk 65 makes a second and a .third revolution this action is repeated but as there are only three short teeth 71 additional rotations ofthe disk 65arerendered impossible. The

spring 61 has therefore been tensioned by the action of three revolutions of the roll 45 or of the disk 65. By this time the paper will i be in a taut condition and will thereafter be unwound fro-1n the roll 45 against the friction existing between the disks 4'6 and 51 and the roll 45. This friction is not suiiiciently strong to tear thepaper but is sufficiently strong to maintain substantial friction between the disks and the roll. As before 1nentioned the amount of this friction can be adj usted by adjusting the screw 50. i

l/Vhile I have shown as afpr eferred construction the pinion 68 5s beingv provided with three shortteeth, itis obvious that this number may be varied so as to permit the 1 011645 to rotate with the disk 65 for any together; upon what degree of tension it was desired to impart to the spring61. It is also obvious that many other variations may be made from'the specific form shown by way givennumber of revolutions, depending al-.

of illustration and I, therefore, desire to claim my invention broadly regardless of the modifications which may be made therein,

provided such modifications fall within the:

scope and the broad meaning of the appended claims. 7

Having described my invention, I 51mm 1. In a tensioning device, means whereby resistance is offered to the unrolling of a roll of paper for apredetermined number of f I'Qi'OlLlillOIlS thereof, and means thereafter o ffering a greater resistance to suchun'rolling.

2. In a tensioning device, means whereby an increasing resistancev is offered to the" unrolling ofa roll of paper for a predetermined number of. revolutions: thereof, and means thereafter offer ng a greater resistance to ing of a' roll of paper for a predetermined number of revolutions thereof, and means immediately effective after said predetermined number of revolutions ofleringr a greater resistance to such Iunrolling.

5. In a tensioning device, a shaft, a roll of paper thereon, spring means whereby increasing resistance is offered to the unrolling of the roll of paper while a predetermined amount of paper is being unwound, means whereby said shaft is then locked against rotation and friction means thereafter offering a greater resistance to such unrolling while permitting said roll to rotate relative to said shaft.

6. In a tensioning device, a shaft on which a roll of paper is mounted, means whereby resistance is offered to the rotation of said shaft for a predetermined number ofrevolutions, and means to lock said shaft against ro tation after said given number of revolutions while permitting said roll to rotate relative to said shaft.

7. In a tensioning device, a shaft on which a roll of paper is mounted, means whereby resistance is offered to the rotation of said shaft for a predetermined number of revolutions, means to lock said shaft against rotation after said given number of revolutions, and means to frictionally engage said roll when said shaft is locked.

8. In a tensioning device, a shaft on which a roll of paper is; mounted, means whereby resistance is offered to the rotation of said shaft for a predetermined number of revolutions, means to lock said shaft against rotation after said given number of revolutions, means to frictionally engage said roll when said shaft is locked, and means to adjust the amount of friction between said means and said roll. 7

9. In a tensioning device, a shaft, disks or said shaft adaptedto resiliently engage a roll of paper, means whereby resistance is offered to the rotation of said shaft and disks for a predetermined number of revolutions,

roll of paper, means whereby resistance is,

ofieredto therotation of said' shaft and anddisks for a predetermined number of revolutionsg means to lock said shaft against rotation after saidgiven number of revolutions, and means to adjust said disks relative to said roll.

11. Ina tensioning .device,'a shaft on which a roll of paper is mounted, disks on said shaft adapted to resiliently engage said roll of paper, means to press one of said disks against the paper, means whereby resistance is offered to the rotation of said disks and shaft for a predetermined number of revolutions, and means to lock said shaft against rotation after said given number of revolutions. 7 v

12. In a tensioning device, a shaft on which a roll of paper is mounted, disks'on said shaft adapted to resiliently engage said roll of paper, means to press one of said disks against the paper, means whereby resistance is offered to the rotation of said disks and shaft for a predetermined number, of revolutions, and spring means to lock said shaft against rotation after said given number of revolutions. 13. In a tensioning device, a shaft, disks on said shaft adapted to resiliently engage a roll of paper, one of said disks being-slidably mounted on said shaft, a spider on said shaft adapted to press said slidable disk against said roll, a spring, and means whereby said spider tensions said spring as said shaft is rotated.

'14. In a tensioning device, a shaft, disks shaft adapted'to press said slidable disk against said roll, a spring, means whereby said spider tensions said spring as said shaft is rotated, and means to prevent the rotation of said shaft after it has beenrotated to a predetermined extent.

15. In a tensioning device, a shaft, a spring operativelyconnected to said shaft so that said spring will be placed under tension as said shaft is rotated, and means to lock said shaft against furtherrotation after it has been revolved to a predetermined extent.

16. In a tensmning device, a shaft, a spring operatively connected to said shaft so that said spring will be placed under tension as jsaidshaft is rotated, and means to lock said shaft against further rotation after it has been revolved to apredetermined extent, said means consist ng of a notched. disk and 'a modified Geneva gear.

17. In a tensioning device, a shaft,fa spring operatively connected to said'shaft' so that said spring will beplaced under tension as said shaft is rotated, and means to lock said shaft a ainst further rotationafter.

it ha s'been revolved to a predetermined ex tent, said means consisting of a pinion having a plurality of Wide teeth and a certain number of teeth of reduced Width, a disk pro vided with a notch adapted to receive oneof the Wide teeth, a lug on said disk provided With a notch adapted to receive one of the teeth of reduced Width, said Wide teeth engaging the periphery of said disk locking said pinion against rotation until vsaid lug receives one of said teeth of reduced Width,-

the number of Wide teeth being limited so 10 as to prevent the rotation ofsaidfdisk after a predetermined number. of revolutions.

In testimony whereof I aflix mysignature. V

ALBERT S. WI-IEELBARGER;

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