US723517A - Automatic roll-paper-printing device. - Google Patents

Description

PATENTED MAR. 24', 1903'.

' G. H. DWO-RZEK. AUTOMATIC ROLL PAPER PRINTING DEVICE.

APPLIPATIOH FILED JAN. 2| 1903.

' 2 SHEETSQSHEET 1.

N0 MODEL.

wzrzns cov. mnraumo No. 723,517. PATENTED MAIL-24, 1903.

. G. HLDWORZEK. AUTOMATIC ROLLPAPER PRINTING DEVICE.

APPLICATION run]: JAN. 2, 1903.

10 MODEL. 2 BHEETS-SHEBT a.

III]

Hill! l gaging mechanism. Fig. 2 is a rear view of UNITED STATES I PATENT I OF ICE.

GUSTAVEII. DWORZEK, OF SAN FRANCISCO, CALIFORNIA.

AUTOMATIC ROLL-PAPER-PRINTING DEVICE.

SPECIFICATION forming part of Letters Patent No. 723,517, dated March 24 1903.

Application filed January 2, 1903. Serial No. 137,464. (No model.)

To aZZ whom it may concern: I

Be it known that I, GUsrAvE H. DWORZEK, a citizen of the United States, residing in the city and county of San Francisco, State of California, have invented an Improvement in Automatic Roll-Paper-Printing Devices; and I hereby declare the following to be a full, clear, and exact description of the same. My invention relates to an apparatus for printing the names, advertisement, or other matter upon roll-paper such as is employed for wrapping packages and the like.

It consists of a mechanism actuated in unison with the revolution of the roll, whereby a single impression is printed upon the roll dur-' ing the first revolution of the roll-carrier, and the mechanism is then disengaged, so that any desired amount of paper may thereafter be taken from the roll without further imprint being made.

It also comprises details of construction which will be more fully explained by reference to the accompanying drawings, in which Figure 1 is an end view of my apparatus, with section showing the printing and disenthe same. Fig. 3 is a sectional view of disengaging gears. Fig. 4: is a plan view of same.

A is a standard or support of any suitable description, in which is journaled a drum car rying a roll of paper 2.

3 is a fulcrumed swinging frame in'which the printing and automatically-disengaging mechanism is carried. This frame may be placed in any desired relation with the paperroll. I have here shown it as suspended above the upper and rear portion of the roll, so that it will swingdown by gravitation or by a spring, if desired, so that the printingwheel will rest against the surface of the-paper. This wheel has a portion of its surface, as 4, carrying the type or character to be printed; and the other portion 4 of its circumference is blank. It is the object of my invention to cause this printing wheel to make a single revolution when the paper is drawn off the main roll 2, and thus make a single imprint upon the paper, after which the revolution of the printing-roll is arrested, and it remains with the blank portion 4 prewhich may be acted upon by a spring or gravitation, so as to rest against the main roll.

The printing-roll 4: 4: is loosely mounted upon a shaft 8, journaled in the frame 3 and extending parallel with the paper roll 2. Upon this shaft are fixed disks 9, which contact with the periphery of the paper-roll, and

paper these disks and the shaft are caused to to tate whenever the paper is pulled off and the paper roll is revolved. This revolution is communicated to the printing-roll as follows The printing-roll is loosely mounted and turnable upon the shaft 8, and upon this shaft is fixed a toothed or escapement wheel 10. A spring-pressed pawl 11 is carried by the printing-roll and when free is adapted to engage with the toothed wheel 10, so that the rotation of the shaft and'the toothed wheel is imparted to the printing-roll as long as the pawl 11 is in engagement with the toothed wheel. This enables the toothed wheel to turn the printing-roll in unison with the movement of the latter and sufficiently to bringthe typesurface into contact with the paper during its revolution. It is then desirable to stop the revolution ofthe printing-roll, and this is effected by means of an arm 12, fixed in such position with relation to the pawl 11 that when the printing-roll has made a semirevolution the pawl will come in contact with the arm and will be disengaged from the toothed wheel 10. This causes the printing-roll to stop its revolution, .while the paper-roll may continue to revolve without producing further action upon the printing-roll.

WVhenever the desired amount of paper has been removed from the printing-roll, it is necessary to again place the printing-roll in condition to be revolved and to again print upon the roll when another section of paper has to be removed therefrom. I have therefore devised a disengaging device by which the pawl 11 is disengaged from the holding-arm 12 and allowed to again drop into engagement with the teeth of the wheel 10. This device consists of a train of gearing 13, which is mounted in the frame 14, and this frame is pivoted on a shaft 15, which carries a gearwheel 16, forming a part of the train of gearing here shown. The shaft 8 either carries a pinion or has teeth formed upon it, as shown at 17, so that when the shaft 8 is being revolved it communicates motion to the gearwheel16 and through it to the train in the frame. The train of gears acts upon an escapement 18, by which its oscillation controls the revolution of the train of gearing, so that as the paper is being pulled oif the roll the revolution of the paper-roll being communicated through the rollers 9 to the shaft 8 will revolve the train of gearing; but as the escapement prevents this train from moving freely it will be obvious that the pinion 17 will carry the wheel 16, with which it is engaged, around with it, thus causing the frame 14 to turn upon its pivot-shaft and to climb up around the shaft 8 as long as 'any paper is being pulled off the roll. As soon as the revolution of the paper-roll ceases the weight of the vframe 14 is snfficient to cause it to drop back to its normal position. This frame 14 has a lug 20, so placed as to engage a pivoted latch 21, carried by an arm 22, projecting from the printing-wheel, and when the weighted frame 14 strikes this latch it does so with sufficient force to disengage the pawl 11 from the holding-arm 12, thus allowing the pawl 11 to again fall into engagement with the wheel 10 and to be in readiness to again turn the printing-wheel when the paper-roll is revolved. It will thus be seen that the first movement of revolution of the paperroll communicates motion through the wheels 9, the shaft 8, the toothed wheel 10, and the engaging pawl 11 to revolve the printingwheel a sufiicient portion of a revolution to print its characters upon the surface of the paper.

I have here shown the printing-wheel as being capable of a full revolution, at the end of which the pawl 11, striking the arm 12, is disengaged from the toothed wheel, and any further revolution of the paper-wheel will have no effect upon the printing-roll. While this is going on the pinion 17 of the shaft 8, engaging the escapement-gear mounted in the frame 14, lifts the latter, turning about its fulcrum-shaft by reason of the impeding action of the escapement, and causes the frame 14 to swing upward and to continue to be lifted in this manner as long as paper is being removed from the roll. As soon as the roll ceases to revolve the weight of the frame 14 and the train carried by it causes it to drop back to its normal position, and when it reaches its lowest point it strikes the latch 21, which is carried by the printing-wheel, with sufficient force to cause the pawl 11 to be disengaged from the arm 12 and to again fall into engagement with the toothed Wheel 10. The latch 21 is pivoted and springpressed, so that it allows the disengaging-arm 20 of the frame 14 to pass it in one direction by the yielding of the spring and to remain rigid against movement in the opposite direction, so that it will act to disengage the latch of the printing-wheel.

Having thus described myinvention, what I claim, and desire to secure by Letters Patent, is-

1. The combination with a revoluble papercarrying rollof ayieldin g frame, a shaft journaled therein, with fixed rollers adapted to contact with the paper-roll, a toothed wheel also fixed to the shaft, a printing-roll loosely turnable upon the shaft, a pawl carried by the printing-roll adapted to engage the toothed wheel whereby motion is transmitted to revolve the printing-roll, and a mechanism for disengaging the pawl after the printing has been completed.

2. The combination with a revoluble papercarrying roll of a yielding frame, a shaft journaled therein with rollers adapted to contact with the paper-roll and transmit motion to the shaft, a printing-roll loosely turnable upon 7 the shaft having a pawl carried upon it, a toothed wheel fixed upon the shaft with which wheel the pawl engages to transmit motion to the printing-roll and an arm by which the pawl is disengaged from the toothed wheel and the printing-wheel held stationary after a single revolution.

3. The combination with a revoluble papercarrying roll of a shaft journaled in a yielding frame, with rollers contacting with the paper-roll and transmitting motion to the shaft, a toothed wheel fixed upon the shaft, a printing-roll loosely turnable upon the shaft, a pawl carried by the printing-roll engaging the toothed wheel to transmit motion to the printing-roll, an arm by which the pawl is disengaged and the printing-roll stopped after each revolution, and a mechanism movable by the revolution of the shaft and acting to release the pawl and allow it to again engage the toothed wheel after the revolution of the paper-roll has ceased.

4. The combination with a revoluble papercarrying roll of a shaft journaled in a yielding frame having rollers fixed thereon and contacting with the paper-roll to transmit motion to the shaft, a toothed wheel fixed to and revoluble with the shaft, a printing-roll loosely turnable upon the shaft, a pawl by which the printing-roll is connected with the toothed wheel, an arm by which the pawl is.

disengaged from the toothed wheel after a single revolution of the printing-roll to stop the latter, a train of gearing and an escapement and fulcrumed frame in which it is carried, a pinion upon the revoluble shaft en- IIO gaging one of the gear-train whereby the latand allowed to engage the toothed drivingter and the frame are raised about the fulwheel; 1 1o crum during the revolution of the shaft and In Witness whereof I have hereunto set my adapted to fall by gravitation when said revhand.

olution ceases, an arm carried by the print- GUS'PAVE H. DWORZEK. ing-roll and a latch projecting so as to be Witnesses: struck by the descending frame whereby the S. H. NoURsE,

holding-paw] of the printing-wheel is released JESSIE O. BRODIE.

Images