US1968153A - Address-printing machine - Google Patents

Description

July 31, 1934. J. KRELL ADDRESS PRINTING IACHINE Filed Jan. :50. 1931 s Shee ts-Sheet 1 lnvenror y 6 LL Atty July 31, 1934- KRELL 1,968,153

ADDRESS PRINTING I ACflINB Filed Jan. 30, 1931 s sheets-sheet 2 YJII'G W Hys.

July 31, 1934.

J. KRELL ADDRESS PRINTING IACHINB Filed Jan. 30. 1931 6 Sheets-Sheet 3 y 1934- J. KREL L 1,968,153

ADDRESS PRINTING ucnms Filed Jan. 30, 1931 6 Sheets-Sheet 4 By JJIIZC? ll ADDRESS PRINTING nonma- Filed Jan. 30, 1931 G-Sheets-Sheet 5 July 31, 1934. J. KRELL ADDRESS PRINTING IACHINE Filed Jan. 50,- 1951 s Sheets-Sheet s Patented July 31, 1934 UNITED STATES PATENT OFFICE ApplicationJanuary 30, 1931, Serial No. 512,423

In Germany February 11, 1930 12 Claims.

My invention relates to address-printing machines having a printing mechanism and means which will be referred to as the selector, for controlling the printing mechanism so that it will print certain printing plates, and skip others.

It is an object of my invention to so design a machine of the type referred to that its printing plates need not be equipped with means such as projections, for effecting the said control, but that such control is exclusively effected by a member which will be referred to as the control chart, and will be shown as a perforated strip of cardboard secured to a cylinder of the selector, but I am not limited to the combination of such a strip with a cylinder.

With the object of my invention in view, combine with the selector a scanning memb which is operatively connected to the selector so as to be under the control of the chart on the selector. The scanning member, in turn, controls the printing mechanism for printing and skipping, and means are provided for imparting intermittent relative movement to the chart and the scanning member in time with the operation of the printing mechanism. The movement-imparting means is operatively connected to the printing mechanism.

Address-printing machines having skipping means for selecting certain printing plates as they move through the machine, and mechanical or electric means for controlling the skipping means, are old.

It is also old in a machine of this type to control the skipping means through the medium of a perforated control chart but in this machine the printing plates are equipped with the means referred to, such as projections, tags, holes, etc. and only those printing plates will be printed which are marked on the chart by perforations in conformity with their means.

By dispensing with the said means on the printing plates, I may perform operations which are impracticable in the old machines. Assume, by way of example, that the printing plates bear the addresses of persons or firms bound to effect certain payments on certain dates. In this case the payments effected in time are marked on the chart, and when the time has elapsed the addresses of all those persons who are in arrears, will be printed by means of their plates. It is not necessary to make any alterations at the printing plates themselves, nor to pick out of the plate pile the plates of those who have paid in time. During each feeding of the printing plates through the machine other printing plates will be printed in conformity with the chart which is on the selector, without any distinctions on the plates.

It will be understood that while in the old machines the printing plates themselves control the skipping means in my machine the skipping means are controlled exclusively by the chart.

. In the selector of my machine each mark, perforation or the like, on the chart corresponds to a printing plate which will arrive at the printing station at a given time. The selection of the printing plates through the medium of the chart may be effected mechanically or electrically, preferably byelectromagnets. The selector is oper-' "ed in conformity with the sequence of the plates be printed.

Electromagnetic means are preferred on account of their simplicity. In a selector of this type the chart is a perforated strip on a support of conducting material which is connected to one terminal of a source of current. The scanning member referred to is adapted to engage the support through the holes in the chart and is connected to the other terminal. In the circuit which is opened and closed by the scanning member under the control of the perforated chart, I provide an electromagnet which when excited by the contacting member engaging the support through one of the perforations in the chart, operates a switch in the circuit of the controlling magnet for the skipping means.

I shall describe a selector in which the support is a rotary drum but the chart may also be secured on a fixed support and the scanning member may be moved along the chart in a sinusoidal path by the mechanism of the machine, or the member may be fixed while the support with the chart is moved line per line below the member first in a given direction, and then at right angles thereto. The support in these cases may be flat. If it is a drum it is fed intermittently by the mechanism of the machine, and the scanning member is moved through the pitchof the rows of holes in the chart in the axial direction of the drum after each complete rotation of the cylinder.

Preferably the switch connected to the circuit of the controlling magnet for the skipping means, and controlled by the electromagnet of the selector, is a double switch for closed-circuit current and for current at making.

My selector may also be applied to a machine of the old type referred to in'which the selector is controlled by means on the printing plates, and the two controls may be combined for alternating operation, or for operation independently or in dependence of each other.

In the accompanying drawings a machine equipped with a selector drum is illustrated by way of example.

In the drawings Fig. 1 is a perspective illustration showing the table of the machine,

Fig. 2 is an elevation of its selector drum, drawn to a larger scale,

Fig. 3 is an end elevation of the drum, viewed in the direction of arrow III at the right in Fig. 2,

Fig. 4 is a plan view of the cylinder,

Fig. 5 is a detail elevation viewed as in Fig. 3 but in another position,

Fig. 6 is a section on the line VIVI in Fig. 2,

Figs. 7, 8, and 9 are details of the cylinder-feeding mechanism,

Figs. 10 to 13 are diagrams of connections, and

Fig. 14 shows a portion of a control chart.

Referring now to the drawings, and first to Fig. 1, 2 is the table of the machine, on suitable standards 1, and A is the selector which will be described in full detail below. 3 is a cage for a pile of printing plates 8, 4 is a track, 5 is a feed slide in the track, and 6 is a rod connecting the slide to a rocking lever 7 to which movement is imparted from the drive of the machine by any suitable means, not shown, and 18 is a plate for locking the lever 7 against movement, for a purpose which will be described.

9 is the printing station, and 10 is the printing arm which is mounted to rock about a pin on the table 2, and is connected to the driving means for the lever 7, as indicated in dotted lines. The means for feeding the printing plates 8, and for rocking the printing arm, form no part of the present invention and therefore have only been shown diagrammatically, and not in full detail.

13 is a boss at the free end of the printing arm, 11 is a printing platen, 14 is the control electromagnet referred to which, if excited, permits the plates to be printed and, if deenergized, permits them to be skipped, 15 is its armature, and 16 is a rocking lever on the printing arm the lower end of which is under the control of the armature 15 while its upper end is connected to the printing platen 11 by means including the link shown above the arm 10, for advancing the platen 11 and printing the plate which is at the station, if the control magnet 14 attracts its armature l5 and the armature engages the lower end of the rocking lever 16. If the control magnet is not excited it does not attract its armature, the platen 11 is not advanced and the plate which is at the station, is skipped. 17 is a switch in the circuit of the control electromagnet 14, and Figs. 7 and 8 show that the switch is under the control of a tail 10 depending from the printing arm 10, and that the switch is open both in the upper and lower final positions of the arm 10. The control magnet 14 is excited when a printing plate is in the position 9, Fig. 1, in advance of the station 9.

When the control magnet 14 is excited it attracts its armature 15 and moves it into the way of the lower end of lever 16, so that the platen 11 is moved into printing position.

If desired, a given plate may be printed repeatedly by moving locking plate 18, Fig. 1, into the way of the rocking lever 7 so that the feed slide 5 is prevented from performing its return movement in the direction of the arrow 19, the feed is arrested, and the plate at the station is printed over again until the plate 18 is retracted.

Referring now to Figs. 3 to 6, 21 is the drum or rotary cylinder of the selector A which is mounted in a, preferably detachable, bracket 20 on the table 2. The surface 21' of the drum or rotary cylinder is of conducting material and provided with a slip ring 23 at its left end, Figs. 2 and 4, to which current is supplied by a cable 24 and a contacting member 22.

The means for intermittently feeding the cy1- inder 21 include a beam 29, Fig. 3, on a pivot 28 in the bracket 20 at the right, a ratchet wheel 25 on the shaft of the cylinder 21, two pawls 26 and 27, a spring 30 which is attached to one end of the beam 29 with its upper end, and secured to the bracket 20 at its lower end 20', and a Bowden cable 72 which as shown in dotted lines in Fig. 1, is attached to the rocking lever 7 at one end, and to the beam 29 at the other.

The Bowden cable 72 may also be connected to the printing arm 10 as shown in full lines in Fig. 1, and in detail in Figs. 7 to 9. Here, the free end of the Bowden cable is connected to the lower end of a handle 73 which is pivoted at 74 in an upright 75 on the table 2. 76 is a rod which may be divided into two members 76 76 for exact adjustment and with one of its slotted members engages a pin 77 on the printing arm. 78 is a hook on the rod which may be moved so as to engage the pin 77.

As often as the lever 7 rocks against its arrow, or as often as the printing arm 10 is raised, the cable 72 is pulled and puts tension on the spring 30 while movement of the lever or arm in the opposite direction causes the spring to contract so that it will pull down the end of the beam to which it is attached. By these means, the cylinder is fed through a given distance in the direction of arrow 31, Fig. 3.

When it is desired to return the cylinder 21 into its initial position the hook 78, Figs. 7 to 9, is detached from the pin 77 so that the handle 73 may be rocked by hand. However, the cylinder may also be moved into its initial position by handling it directly instead of the cable 72 and the handle 73.

Instead of being operated from the lever 7 the cable 72 might be operated from the slide 5, or by means connected to the slide. Connection to the drive is preferable in a machine with multiple printing means but care must be taken that the cylinder 21 is only fed if a new plate is at the printing station 9. As often as the slide 5 is advanced, that is, moved against arrow 19, which corresponds to upward movement of the printing arm 10, tension is put on the spring 30 by cable 72.

32, Fig. 4, are pins arranged in a row in parallel to the axis of cylinder 21 for holding thereon a control chart 33 such as shown by way of exam ple in Fig. 14. 34 are holes or perforations in the chart. It has been assumed that the chart is so wide as to receive 100 holes in a row, and so long that it has room for 20 to 30 rows. In all, 2000 to 3000 holes may be made in such a chart. The chart may be lined as shown, or plain. 32' are rows of holes at the edges of the chart for securing the chart on the pins 32, with its ends 33' overlapping. 35 is a straight-edge of insulating material which is perforated for the reception of the pins 32, placed on the overlapping ends 33, and held by hinged clips 36, which if rotated in the direction of arrow 37, Fig. 6, release the straight-edge 35.

38 is a scanning member at the end of a slide which is mounted to slide 39 on a rod 41 in front of cylinder 21 and resembles the tabulator lock of a type-writing machine. The slide moves on the rod with two bushes 40. Secured to, or integral with, the slide is an arm 38' to the end of which the'member 38 issecured. 39 are bearing bosses at the lower end of the body 39, 42 is a shaft in the bosses, as best seen in Fig. 5, and 43 is a lock plate, with two locking teeth 50 and 51, Fig. 2, pitched at an angle of 90 degs., which is mounted on shaft 42 and recessed for the reception of a ratchet wheel 52. The ratchet wheel 52 is mounted to rotate on a pin 53 projecting from the body 39. 54 is a spur gear at the rear of the ratchet wheel 52, and 56 is a rack secured to the bracket 20 in parallel relation to rod 41 with which the gear 54 is meshing. 60 is a spring casing from which a band or the like 59 extends to the slide 39. The spring in the casing pulls the slide 39 to the right, arrow 61 in Fig. 2.

46, 4'7 are the two arms of a lever which is mounted to rock on the slide at 48, Fig. 5, with its upper, hook-shaped end 49 extending into the vicinity of member 38. 45 is a stay by which the lower end of the lever arm 46 is connected to a downward extension 44 of lock plate 43.

The arm 38 is of insulating material and the lower end of member 38 is in contact with a conducting rail 58 at 37, Fig. 5, which rail is secured to the lower edge of rack 56, with an insulating strip 57 interposed. 62 is a cable connecting the rail 58 to an electromagnet 63, Fig. 4, from which a cable 64 extends to one of the contacts of switch 1'7, as shown in Fig. 10. 65 is the armature of electromagnet 63 which controls a double switch. The double switch has three members. Its central member 66 is connected to the plus wire of an electric system, as shown in Fig. 10. The two springs 67 and 68 at the sides of the central member 66 are connected, respectively, to plug contacts 70 and 69. The armature 65 has a cam at its free end, Fig. 4, by which it engages the free end of central member 66. When the electromagnet 63 is deenergized as shown in Fig. 4, the cam at its free end releases the central member or spring 66 which now makes contact at 6'7. When the electromagnet is energized it attracts its armature whose cam pushes the central member 66 to the right, causing it to engage spring 68 and to release spring 6'7.

The slide 39 is held against displacement on the rod 41 while the tooth 51 is engaged in the ratchet wheel 52, and while the arm 47 with its hook 49 bears on the chart 33. When it is raised from the chart by the straight-edge 35 as shown in Fig. 5, the lock plate 43 is rocked about its shaft 42, and the tooth 51 is disengaged from the ratchet wheel 52. At the same time the tooth 50 is moved into locking position with respect to the ratchet wheel 52. Under the pull of the band 59, the ratchet wheel 52 rotates through half its pitch. when the hook 4'1 comes off the straight-edge the lock plate 43 returns into its initial position, in which the tooth 50 is out of, and the tooth 51 is in mesh, with the ratchet wheel 52. The ratchet wheel has now rotated through one pitch and the slide has been displaced for the pitch of two rows of holes 34.

Referring now to Fig. 10, the wire is connected to the wire 24 and the contacting member 23 at the left of cylinder 21, and the wire is connected to one terminal of switch 17. The other terminal of the switch is connected to one end of electromagnet 63 through wire 64. Spring 67 of the double switch illustrated in detail in Fig. 4, as mentioned, is connected to the plug contact 70, and spring 68 to the other plug contact 69; 71 is a wire which is adapted'to be connected to plug contacts 70 or 69 at one end, and its other end is connected to the control magnet 14.

If the wire '71 is connected to plug contact 69 as shown the system is operated by current at making. As often as the cylinder 21 closes the circuit of the electromagnet 63 by the scanning member 38 engaging the surface 21' of the cylinder through a hole in the chart 33, the armature 65 of the electromagnet '63 is attracted and pushes the central member or spring 66 to the right so that it engages the spring 68 and the skipping magnet 14 will be energized as soon as the printing arm 10 closes the switch 17.

Assume now that 1, Fig.2, is the first row of holes in parallel to the axis of cylinder 21. Assume further that the machine is of the type the control magnet 14 of which must be excited when the printing plate moves from 9' to the printing 7 station 9.

Move slide 39 to the left as far as it will go, and turn cylinder 21 until member 38 engages the straight-edge 35 at .r". The hook 49 on arm 47 engages in front of 35, and the selector is in its initial position. When the printing arm 10 descends for the first time the printing plate remains at 9' but the cylinder 21 is rotated through one pitch in the direction of arrow 31, Fig. 3. The straight-edge 35 now raises the hook 49 and drops it at its rear, moving the slide 39 to the right through one pitch. The hole 34 at 1 in the first row is now engaged by the contacting member 38, 63 is energized, the double switch is closed by 66 and 68 but the switch 17 is still open. The cylinder remains in its position until the following descent of the printing arm 10, so that, when upon the next ascent of the printing arm the switch 17 is closed the control magnet 14 the circuit of which has been prepared at 66, 68, is energized and this has the consequence that the printing plate moving as far as the station 9 is printed. When the printing arm 10 has completed its descent the switch 17 is opened againand the control magnet deenergized which,

the contacting member 38. If, as shown, there is no hole 34 in the second row the control magnet 14 is not energized notwithstanding the closing of its circuit at 1'7 by the printing arm because the double switch is open at 66, 68. The second plate is not printed.

In order to ascertain the synchronism of the cylinder 21 with the motion of the printing plates, proceed as follows:

After the cylinder 21 has been rotated until the scanning member 38 is in line with the last hole in the first row, that is, with, say, hundred holes per row, in line with hole ,100, and the printing plate has been printed if there is a hole 34 at this point, or skipped, if there is no such hole, turning the cylinder through one more pitch causes the scanning member 38 to-be again above the straight-edge 35. To ascertain the synchronism in these positions, a so-called group plate is inserted after each hundredth normal printing plate, which is without types and when it arrives at the station 9 the machine is arrested in known manner. In the position of the cylinder as defined the group plate moves to the station and the machine stops. The operator should ascertain that in fact the hundredth and first or group plate coincides with the position of scanning member 38 on straightFedge 35 and that, when now the next or hundredth and first normal plate arrives at the station 9 the cylinder is so positioned as to move the hole 34 at 101" into active position.

After the drive of the machine has been restarted the slide 39 is moved to the right through one more pitch and the scanning member engages at the first hole 101 of the second row whereupon plates 101 to 200 move through the machine and it is again arrested. This is repeated for all rows of holes in the chart 33 and until the printing plate corresponding to the last hole has moved past the printing station 9. The machine is now arrested and anew pile of printing plates inserted.

The operation is quite the same if the cylinder 21 is operated from the lever '7 and if it is operated from the rod of slide 5, only in the latter case the cylinder is fed only when a new printing plate moves to the station 9, as required if the printing plates are held at the printing station for repeated printing.

The machine may also be started by adJusting the first station of the chart in line with the scanning member 38 initially which station or hole does not correspond to any printing plate.

Operating with current at make as described is suitable if it is intended, for instance, to send advertisements to customers who have effected certain purchases at a given time or at a given shop, as indicated by the perforations on the chart.

If it is desired to operate with closed-circu1t current, the wire 71 is connected at '70, as shown in dotted lines in Fig. 10. The operation lS the same as described, with the exception that, as soon as the scanning member 38 enters a hole in the chart 33 the circuit of magnet 14 is opened, that is, all printing plates are printed the stations of which are not perforated on the chart while all those having perforated stations, are skipped. In this case the switch 66, 67 is normally closed, and opened as often as the electromagnet 63 is excited, through armature 65.

The operation with closed-circuit current is suitable, for instance, if it is desired to send reminders to customers in arrears with their payments, all effected payments being marked by holes 34 in the chart. To prevent printing of the group plate the straight-edge 35 is preferably made of conducting and not of insulating mal lz rnentioned it is possible to combine with my selector means for selecting printing plates through the medium of marks, for instance, projections. Diagrams of such machines are shown in Figs. 11 to 13.

The diagrams correspond to Fig. 10, except for the alterations involved by the combination.

Referring to Fig. 11, a, b, c, d, e, f are selector switches, and a, b, c, d, e, and are press buttons in the circuits of the switches. The circuits of the switches and press buttons are connected in parallel to the selector system. Cutout switches and 81 are preferably provided in the wire and the wire 64 in order to cut out the cylinder 21 altogether.

If buttons b and d are operated those plates will be printed the marks of which correspond to the selector switches b, d, the selectors being closed as these plates are fed and the skipping magnet 14 is excited, even if the cylinder 21 would not cause these plates to be printed.

Such a system is preferred, for instance, if except the persons noted down by perforations in the chart 33, there are other persons or groups to whom certain matter is to be addressed.

Referring to Fig. 12, the selector circuits are connected between the plug contact 69 or 70 and the magnet 14. Here the magnet 14 will only be excited if not only the contacts 66, 67, or 66, 68, as the case may be, are closed by the cylinder 21, but also not less than one of the selector circuits is closed. With the system Fig. 12, for inst. it is practicable to print out of plates marked as belonging to a certain group, only those in which also the selector cylinder 21 permits the printing.

Referring to Fig. 13, the selector circuits, are connected in parallel to the circuits through cylinder 21 and contacting member 38 so that electromagnet 63 is excited not only by closing of its circuit by the chart 33 on cylinder 21 but also one of the selector circuits is closed. Here, for instance, the plates of a definite group may be excluded from printing although the cylinder 21 would permit printing.

I claim:

1. In an address-printing machine, a support of electrically conducting material, means for securing a perforated control chart to said support, a scanning device including a contacting member which is adapted to make contact with said support through the holes in said perforated control chart, a control magnet, a circuit connecting said magnet to said contacting member and to said support, so as to be made when said contacting member engages said support through a hole in said chart, and means under the control, respectively, of the printing mechanism of the machine and said support, for imparting relative'movement in two directions transversely to each other to said support and to said scanning device.

2. In an address-printing machine, a drum of electrically conducting material, means for securing a perforated control chart to said drum, a scanning device including a contacting member which is adapted to make contact with said drum through the holes in said perforated control chart, a control magnet, a circuit connecting said magnet to said contacting member and to said drum, so as to be made when said contacting member engages said drum through a hole in said chart, and means under the control, respectively, of the printing mechanism of the machine and of said drum, for imparting intermittent rotary move ment to said drum, and for intermittently moving said scanning device along said drum.

3. In an address-printing machine, a drum of electrically conducting material, means for securing a perforated control chart to said drum, a scanning device including a contacting member which is adapted to make contact with said drum through the holes in said perforated control chart, a control magnet, a circuit connecting said magnet to said contacting member and to said drum, so as to be made when said contacting member engages said drum through a hole in said chart, and means under the control, respectively, of the printing mechanism of the machine and of said chart-securing means on said drum, for imparting intermittent rotary movement to said drum, and for intermittently moving said scanning de vice along said drum.

4. In an address-printing machine, a drum of electrically conducting material, means for securing a perforated control chart whose stations for placing perforations are arranged in rows, to said drum, a scanning device including a contacting member which is adapted to make contact with said drum through the holes in said perforated control chart, a control magnet, a circuit connecting said magnet to said contacting member and to said drum, so as to be made when said contacting member engages said drum through a hole in said chart, means under the control of the printing mechanism of the machine for intermittently rotating said drum through the pitch of two rows extending in parallel to its axis, and means under the control of said drum for moving said scanning device through the pitch of two rows extending at right angles to its axis, after said drum has performed a complete revolution.

5. In an address-printing machine, a drum of electrically conducting material, means for securing a perforated control chart to said drum, a scanning device including a contacting member which is adapted to make contact with said drum through the holes in said perforated control chart, a tabulator lock connected to said scanning device, a control magnet, a circuit connecting said magnet to said contacting member and to said drum, so as to be made when said contacting member engages said drum through a hole in said chart, means under the control of the printing mechanism of the machine for imparting intermittent rotary movement to said drum, means for pulling said lock and said scanning device along said drum, and means controlled by said drum for locking and releasing said tabulator lock.

6. In an address-printing machine, a drum of electrically conducting material, means for securing a perforated control chart to said drum, a scanning device including a contacting member which is adapted to make contact with said drum through the holes in said perforated control chart, a control magnet, a circuit connecting said magnet to said contacting member and to said dnim, so as to be made when said contacting member engages said drum through a hole in said chart, means under the control of the printing mechanism of the machine and including a pawl-andratchet mechanism and a pull-back spring; for imparting intermittent rotary movement to said drum, and means controlled by said drum for intermittently moving said scanning device along said drum.

7. In an address-printing machine, a drum of electrically conducting material, means for securing a perforated control chart to'said drum, a scanning device including a contacting member which is adapted to make contact with said drum through the holes in said perforated control chart, a control magnet, a circuit connecting said magnet to said contacting member and to said drum, so as to be made when said contacting member engages said drum through a hole in said chart, means under the control, respectively, of the printing mechanism of the machine and of said drum, for imparting intermittent'rotary movement to said drum, and for intermittently moving said scanning device along said drum, a system for supplying current to said circuit, and a double switch connected to said system and said magnet and adapted to be controlled by said drum.

8. In an address-printing machine, a drum of electrically conducting material, means for securing a perforated control chart to said drum, a scanning device including a contacting member which is adapted to make contact with said drum through the holes in said perforated control chart, a control magnet, a circuit connecting said magnet to said contacting member and to said drum,

so as to be made when said contacting member engages said drum through a hole in said chart, means under the control, respectively, of the printing mechanism of the machine and of said drum, for imparting intermittent rotary movement to said drum, and for intermittently moving said scanning device along said drum, a system for supplying current to said circuit, a double switch connected to said system and said magnet, and an electromagnet adapted to be energized and to operate said double switch when the contacting member of said scanning device makes contact.

9. In an address-printing machine, a drum of electrically conducting material, means for securing a perforated control chart to said drum, a scanning device including a contacting member which is adapted to make contact with said drum through the holes in said perforated control chart, a control magnet, a circuit connecting said magnet to said contacting member and to said drum, so as to be made when said contacting member engages said drum through a hole in said chart, means under the control, respectively, of the printing mechanism of the machine and of said drum, for imparting intermittent rotary movement to said drum, and for intermittently moving said scanning device along said drum, 2. switch in said circuit, and an electromagnet adapted to be energized and to operate said switch when the contacting member of said scanning device makes contact.

10. In an address-printing machine, a drum of electrically conducting material, means for securing a perforated control chart to said drum, a scanning device including a contacting member which is adapted to make contact with said drum through the holes in said perforated control chart, a control magnet, a circuit connecting said magnet to said contacting member and to said drum, so as to be made when said contacting member engages said drum through a hole in said chart, means under the control, respectively, of the printing mechanism of the machine and of said drum, for imparting interemittent rotary movement to said drum, and for intermittently moving said scanning device along said drum,

a switch in said circuit which is adapted to operate alternately as a closed-circuit and as an opencircuit switch, and an electromagnet adapted to be energized and to operate said switch when the contacting member of said scanning device makes contact.

11. In an address-printing machine, a drum of electrically conducting material, means for securing a perforated control chart to said drum, a scanning device including a contacting member which is adapted to make contact with said drum through the holes in said perforated control chart, a control magnet, a circuit connecting said magnet to said contacting member and to said drum, so as to be made when said contacting member engages said drum through a hole in said chart, means for de-energizing said magnet in both final positions of the printing mechanism of the machine, means under the control, respectively, of said printing mechanism and of said drum, for imparting intermittent rotary movement to said drum, and for intermittently moving said scanning device along said drum, a switch in said circuit, and and electromagnet adapted to be energized and to operate said switch when the said chart, means under the control, respectively, of the printing mechanism of the machine and of said drum, for imparting intermittent rotary movement of said drum, and for intermittently moving said scanning device along said drum, means for throwing out the means under the control of the mechanism, a switch in said circuit. and an electromagnet adapted tobe energized and to operate said switch when the contacting member of said scanning device makes contact.

JOSEPH KREIL.

Images