US759249A - Addressing-machine. - Google Patents

Description

PATENTED MAY 10, 1904.

J. S. DUNCAN. ADDRESSING MACHINE.

APYLIOATION FILED MAR. 21. 1903.

7 SHEETS-SHEET 1 N0 MODEL.

rm: ngnms Pawns cu. mom-m No. 759,249. PATENTED MAY 10, 1904.

' J. S. DUNCAN.

ADDRESSING MACHINE.

APPLICATION FILED MAR.- 21. 1903.

NO MODEL. 7 SHEETS-SEEET 2.

' No. 759,249. PATBNTED MAY 10, 1904.

J. S. DUNCAN.

ADDRESSING MACHINE.

APPLICATION FILED MAR. 21, 1903.

no MODEL. 7 SHEETS-SHEET 3.

No. 759,249. PATENTED MAY 10, 1904.

J. S. DUNCAN.

ADDRESSING MACHINE.

APPLICATION FILED MAR. 21. 1903.

7 SHEETBSHEBT 4.

' 'I SREETSSHEET 5.

' J52 Mentor? x/am Warn/6y PATENTED MAY 10, 1904.

J. S. DUNCAN. ADDRESSING MACHINE.

APPLICATION FILED MAR. 21. 1903.

N0 MODEL.

fzmqs/ax m a; 6M

No. 759,249. PATBNTED MAY 10, 1904. J. S. DUNCAN.

ADDRESSING MACHINE.

APPLIUATION FILED MAR. 21. 1903.

N0 MODEL. 7 SHEETS-SHEET 6.

J9 r J4 //,,z,ma m 1 a H0 MODEL.

J. S. DUNCAN. ADDRESSING MACHINE PATENTED MAY 10, 1904.

APPLICATION FILED MAR. 21. 1903.

7 SHEETK-BHBET '1.

UNITED STATES Patented May 10, 1904.

PATENT OEEIcE.

JOSEPH S. DUNCAN, OF CHICAGO, ILLINOIS, ASSIGNOR TO ADDRESSO- GRAPH COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OFv ILLINOIS.

ADDRESSING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 759,249, dated May 10, 1904. Application filed March 21. 1903. $eria1N0. 148,901. (N model.)

To (all [if/2.0772 it may concern.-

Be it known that I, J ()SEPH S. DUNCAN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvei'nents in Addressing-Machines, of which the following is a specification.

This invention relates to addressing-machines of the type shown in Letters Patent No. 579,706, granted to the Addressograph Company as my assignor on March 30, 1897. These machines are primarily used for printing addresses on envelops, newspaper-wrappers, postal cards, letter-heads, bills, &c., from an endless chain of printing-forms; but

it will be understood, of course, that these are not the only uses of the machine, and it can be employed for printing any matter and on other materials besides those mentioned.

The object of the invention is to provide a machine of simple construction which will stand hard usage and not easily get out of order and which will always produce a clear and even printing impression.

The invention also has other objects in view, all tending to produce a superior machine for ,this class of work and which will be fully and clearly pointed out and explained in the detailed description hereinafter.

I have shown one embodiment of my invention in the accompanying drawings, in which Figure 1 is a side elevation of the machine in its normal position ready for use. Fig. 2 is a similar view showing the parts in the position they occupy when the impression is being taken. Fig. 3 is a front view. Fig. tis a rear view. Fig. 5 is a top plan view with the envelop-plate removed and with some of the parts in section, being taken on the line 5 5 of Fig. 1. Fig. 6 is a sectional view of the platen and its adjustable connection with the platen-arm. Figs. 7 to 10 are sectional.

views showing the ditferent positions of the drum feeding and locking devices. Figs. 11 and 12 are detail top plan views showing, respectively, the position of the parts for obtaining duplicate impressions from each form and for obtaining any number of successive impressions from one form. Fig. 13 is a detail sectional view onthe line 13 13 of Fig. 12. Figs. 14: and 15 are detail views of the ratchet-disk and the release-lever, respectively. Figs. 16 and 17 are respectively top and bottom plan views of the envelop-plate and parts carried thereby. Fig. 18 is a sectional view on the line 18 18 of Fig. 17. Fig. 19 is a sectional view on the line19 19 of Fig. 18.

Referring to the drawings, in which like numerals of reference designate correspond ing parts in the several figures, 9.0 is a platenarm, which is carried by a horizontal shaft .21, Fig. 5, mounted at one end in lugs 22 on the frame 23 and at the other end in the bracket 26. The frame is located at one side of the machine and is of angular or other suitable form to engage the edge of a table or other support 24, on which the machine is fastened by means of a clamp 25, Figs. 3, 4.

A pedal-lever 27 of angular form is mounted on the shaft 28 and provided. with a footrest 31, by means of which it can be swung back and forth. The movement of the pedal- ]ever is limited by the lug 29, Figs. 2, 4, engaging the stop 30 on the backward stroke and the stop 30 on the forward stroke. The pedal-lever has an arm 27, which extends upward in rear of its pivot in proximity to the lower end of the platen-arm and, supports a shaft 33, which carries the lovers 34:, Fig. 4;. One arm of each lever is pivotally connected to the lower end of the platen-arm, and the other arm is connected by a link frame 35 with the primary inking device. I prefer to employ a pair of levers 34 for the purpose of obtaining a regular and even movement of the inking device to apply the ink in a thorough and uniform manner; but I do not limit myself to this precise construction.

The drum 36, which carries the belt or chain 32 of printing-forms, is mounted on a rigid shaft 37, supported in lugs 37' on the frame 23, and the face of the drum is divided into flat sections 38, Fig. 5, corresponding substantially to the width of the links of the chain to form a solid bed for the form while the impression is being made. The drum is provided with peripheral projections 39 at the edges of these flat sections to enter between the links for the purpose of holding them rigidly in proper position on the drum.

I may use a chain of printing-forms made up of rubber type arranged in holders of the kind disclosed in said Letters Patent N 0. 579,706 and Letters Patent No. 656,443, dated- August 21, 1900, or I may use printing-plates such as that disclosed in Letters Patent No. 636,504, dated November 7, 1899; butit will be understood I do not limit the use of this machine to a chain of printing-forms of any particular kind linked together in any special manner, as that feature does not form part of the present invention. 1 do, however, intend and prefer to use a chain of printing-forms and have provided certain novel and improved means for inking the forms, which I will now describe.

I have observed that when a number of type-holders are linked together in a chain and suspended on the drum they will hang to a certain extent irregularly in a more or less zigzag relation to each other, as shown in Figs. 1 and 2, which seems to be due largely to the linking devices. Under ordinary circumstances it may happen that a part of the form will not become properly linked and in this connection I may call attention to the fact that great care must be exercised in inking the forms to produce a clear and even impression, particularly in view of the fact that the ink is not applied with rollers, but by direct engagement of a pad. I therefore prefer to apply the ink to two forms simultaneously, and in this way I ink each form a second time. The primary inking device consists of a holder 40, removably fastened in a carrier 41, which is pivotally connected with the link 35. The pads 42 are secured in any suitable manner in the holder and pitched to an angle thereto, as shown. The ink-supply pads 43 are correspondingly pitched and mounted in a holder 44, removably arranged in an adj ustable support 45. These pads may be made in any suitable manner of felt or other material, and the pads 42 are for the purpose of carrying the ink from the supply-pads 43 to the forms which hang adjacent to the bedplate 46. This bed-plate has its face divided into two angularly-disposed sections 47 48, which are adapted to accommodate two links of the chain as they hang in their natural position. The bed-plate is carried by a bolt 49 on a bracket 50, secured to the frame, and by means of the screws 51, as well as the bolt 49, this bed-plate can be adjusted to exact position for obtaining the desired results. The primary inking device just described is thus constructed to simultaneously ink two forms of the chain, and as the drum carries its chain around step by step, as hereinafter described, it is apparent that each form will be in inked a second time. The ink-carrying pads and the two sections of the face of the bed-plate are pitched to correspond to the angular position in which the forms hang, as heretofore described, and in this way I provide for applying the ink to the entire face of the form, which may comprise several lines of type characters, and distribute the ink evenly thereover. This is a matter of considerable importance, for it is most desirable to have a clear, distinct, and even type impression, and this can only be accomplished by distributing the ink evenly over the form and applying an even pressure of the platen. The holders 40 and 42 are made removable, so that the pads can be repaired and replaced as they wear and also in order that one or both of them may be removed when the machine is repeating to prevent reinking the same forms a number of times. For the purpose of swinging the ink-carrier from its horizontal position, Fig. 1, to its upright position, Fig.2, I provide the carrier with a pin 52, which works in a pivoted stud 53, carried by an arm 53 on the main frame. When the pedal lever is operated and levers 34 and link 35 shift the carrier from its position at rest to inking position, the pin will swing the carrier into upright inking position, Fig. 2, by reason of the fact that its upper end is held by the stud, although working freely therein, while its lower end is fast to the carrier.

The devices for feeding and locking the drum are clearly shown in Figs. 7 to 10, and referring thereto it will be observed that one edge of the drum is provided with a series of notches 54, which are engaged by the feed-dog The feed-dog is pivotally mounted between its ends on an arm 56, rigid, with the platen-arm to operate simultaneously therewith, and a spring 57 is fastened to the rear end of the dog and to the arm to hold the dog normally in position to engage the drum. A locking-dog 58 is arranged to enter a notch in the drum diametrically opposite the notch engaged by the feed-dog, and this locking-dog is carried by aplate 59, pivotally supported on the frame. The plate 59 is provided with a shoulder 60, extending rearward of the drum and arranged to be engaged by apresser-foot 61, carried by the arm 56 beneath the feed-dog. This presser-foot is preferably pivoted to the arm 56 between its ends, as shown, and provided with an antifriction-roller 62 to engage the shoulder 60, and a pin 63 to engage the arm 56 and hold the foot in proper position. The drum is locked while the impression is being taken and unlocked on the upward stroke of the platen. \Vhen the platen moves down to effect the impression, the feed-dog is carried down into position to engage the next notch of the drum and the presser-foot rides against the shoulder and swings on its pivot sufiicient to pass the shoulder without releasing the locking dog, Fig. 8. On the upward stroke of the platen the roller 62 on the presserfoot engages the shoulder 60 and swings the plate 59 to withdraw the locking-dog from engagement with the drum, Fig. 9, as the feed-dog enters the notch in the drum adjacent thereto. The drum is thus revolved a step, and a spring 59 brings the locking-dog into locking engagement again with the drum. It will be observed that the presser-foot is free to swing a limited distance on its downward movement; but on its upward movement the pin 63 engages the arm 56 and holds the presser-foot rigidly in position to engage the lower edge of the shoulder 60 for the purpose of releasing the locking-dog from engagement with the drum. The arm 56 is shown integral with the platen-arm, Fig. 5; but it is apparent that the shaft 21 could be made to rock and the arms 56 and 20 made independent and keyed thereon to accomplish the same result.

The drum is made detachable from the d rumshaft and constructed to correspond with the size of the links forming the chain to be used therewith that is to say, for different sizes of links, which may contain one, two, or more lines oftype, I employ drums with flat sections corresponding in size to the links. I construct the drums with flat sections of even numbers, and by arranging the locking-dog diametrically opposite the feed-dog I avoid the necessity of changing these parts when the drums are changed, for by this arrangement the dogs are positioned to engage the notches of any of the drums. For the purpose of indicating to the operator'that all the forms on a chain have been printed I prefer to extend the last form to engage the lever 64, operating the striker of a bell 65, mounted on the end of the drum-shaft, as shown only in Fig. 5.

The machine is constructed to make one or more impressions from each form, and the devices for accomplishing this are shown in detail in Figs. 11 to let. Apin 66 is carried by the feed-pawl, and when it is desired to take a single impression from each form this pin projects laterally from the dog and moves freely therewith without engaging any of the parts hereinafter described. A plate 67 is adjustably secured on the frame and carries at its end a revoluble disk 68 and a cam 69. The plate is adapted to be adjusted when a single impression is to be taken from each form so that neither the cam nor the disk will be engaged by the pin 66; but if two impressions are to be taken from each form I provide a disk of the character shown in Fig. 14 and adjust the plate so that this disk will be engaged by the pin. I This disk is provided with six ratchetteeth and three deep notches 70. When the pin 66 enters one of the notches 70, the feed-pawl will be permitted to enter a notch in the drum; but when the pin enters one of the shallow notches 71 it will hold the feed-dog out of engagement with the drum during a complete operation of the platen.

contact with the form.

In this way I provide for feeding the drum at every second operation of the platen, and thus obtain two impressions from each form, and it is obvious that I may provide disks with the notches otherwise disposed and formed to correspondingly change the number of impressions to be obtained from each form. I provide a swing-controlled detent or pawl 7 2 to engage the teeth of the disk and prevent it from revolving in the reverse direction. The cam 69 is formed so that when adjusted to engage the pin 66 it will hold the pawl out of engagement with the drum and permit an indefinite number of impressions to be taken from the same form. A release-lever 73 is mounted on the drum-shaft and is provided with a shoulder 74 to disengage the locking dog from the drum and a shoulder 75 to disengage pin 66 on the feed-dog from the drum, so that the drum may be freely revolved without operating the machine for the purpose of adjusting the chain with a particular form in printing position and for other purposes. hen the cam 69 has been adjusted to engage the pin 66 and the desired number of impressions have been taken from one form, the locking-dog may be disengaged from the drum by operating the release-lcver, so that the drum can be turned to bring another form in printing position, and in this way and with very little trouble a number of impressions can be taken from each form without requiring a change of disks, but by simply operating the release-lever at the proper time.

The work is placed upon a plate 76, ar-

ranged between the platen and the form and shown in detail in Figs. 16 to 19 and hereinafter referred to as the envelop-plate for purposes of description. This plate is pivoted on a fixed stud 77 on the bracket 26 and a springpressed adjustable stud 7 8 on the frame, Fig. 3, which studs enter openings in the ears 7 6, Fig. 17, and the plate is provided at its forward end with an opening7 9, so that the envelop may be pressed by the platen into I provide the enve1op-plate with a pad 80, which is used to distribute the ink evenly on the form and remove surplus ink and to which ink may be applied, so that the pad can be utilized as an inking device when the machine is repeating to the exclusion of the primary inking device. This pad consists, preferably, of felt wrapped on a plate 81 and removably held in a carrier-frame 82, guided in the brackets 83 and attached to a rod 84. In its normal position when the platen is elevated the pad is located immediately above the form, Fig. 1, and closing the opening in the envelopplate. As the platen is carried down into operative position a linger 85 is swung rearward and engages a depending lug 86 on the rod 84 and carrying an antifriction-roller 87 for the purpose of retracting the pad 80 from its position above the form and to permit the en velop to be brought into contact therewith. This finger is mounted on a shaft 88 and provided with a crank 89, which is connected with the shaft 33 by a link 90, so that the re traction of the pad will be simultaneous with the downward movement of the platen. A spring 91 is fastened to the under sideof the envelop-plate and to the rod 8 1 to return the pad to its operative position as the platen is raised.

The forward end of the envelop-plate is normally held in an elevated position by a flat spring 92, operating on a post 93, carried by the plate, Fig. 2; but for the purpose of bringing the pad 80 into operative engagement with the form I provide a cam 94, which travels in contact with an antifriction-roller 95 on the rear end of the envelop-plate. This cam is mounted on the shaft 88 and operated simultaneously with the finger and may be connected with and form a part of the finger, as shown. This cam is provided with ashoulder 96, which engagesthe roller after the pad has resumed its position above the form, for the purpose of pressing it into engagement with the form to ink the same or to distribute the ink more evenly on the form and remove surplus ink. It will be readily understood, therefore, that for some purposes, and particularly when the machine is repeating and it is not desired to have the primary inking device constantly reinking the same forms, the primary inking device may be wholly dispensed with and ink applied directly to the pad 80; but under ordinary circumstances I prefer to use both the primary and the secondary inking devices, because the latter is useful in spreading the ink over the form and assists in producing a clear and distinct impression.

I have also provided devices for automatically adjusting the pad so that the same part thereof will not constantly engage the printing-form. These devices comprise a ratchetwheel 97 which is carried by the rod 84 and arranged to engage a pin 98, pivotally supported on the rear end of the envelop-plate. An eccentric 99 is formed rigid with the ratchet-wheel on one side thereof and arranged to abut against a stop 100 to limit the forward movement of the pad. When the pad is retracted, the ratchet-wheel will engage the pin 98 and be revolved a step and carry with it the eccentric 99, so that a different portion of the eccentric will engage thestop 100 after each retraction of the pad, and consequently the pad will be retracted to a greater or less distance each time to bring a different part thereof into operative relation to the form. This automatic adjustment of the pad is important also to prevent the type from wearing the pad rapidly, as well as to bringa different part of the pad into contact with the successive forms to ink the forms or to distribute the ink thereon.

I may use with the machine a dating-form 101, supported on an arm 102, adjustably fastened by a clamp 103 to the shaft 37. This dating-form is located at one end of the form carried in printing position by the drum and is adapted to be engaged by one end of the pad 80, to which ink can be supplied for the purpose of inking the datingform whether or not the pad is employed for inking the other printing-form. Of course I may substitute for the dating-form a form of any other kind which is of a more or less constant character to print on each envelop.

The roller 95 is carried by a spring-pressed rod 10 1, supported on the under side of the envelop-plate and provided with a head or handle 105, whereby the roller can be withdrawn from operative relation to the cam and shoulder 94 96 to permit the envelop-plate to be temporarily swung on its pivot and its forward end elevated, and thus enable the chain of forms to be removed from or arranged on the drum.

The platen 107, Fig. 6, is provided with a rubber facing. 108 and is fastened in a frame 109, which is secured on the end of the platenarm by a screw-bolt 110. The platen-arm is provided on each side thereof with a pair of lugs 111, spaced apart to accommodate the adjusting-nuts 112 on the threaded posts 113, which are rigid with the platen-frame and eX- tend upward through openings provided for them in the lugs 111. By these means the platen can be adjusted in correct relation to the drum and the form thereon, so as to apply the pressure evenly on the envelop to obtain a clear and distinct impression at all times.

The several adjustments of the working parts of the machine are of especial importance in this class of work to obtain a clear and even impression at all times, and they are of such a character that after being set for a certain class of work they will not require further attention. The machine is strongly constructed and the parts are arranged and combined in a manner which will indefinitely withstand the comparatively hard usage to which such machines are subjected frequently by unskilled and careless operators, so that the standard of work may be constantly maintained.

When the platen is brought into contact with the envelop or paper on the envelopplate, the latter is depressed by the platen to carry the envelop or paper into contact with the form, and it is important that the parts of the machine should be constructed and arranged to prevent the paper from being moved laterally between the platen and envelop-plate during this operation, which would have a tendency to produce a blurred impression or tear the paper. This I accomplish by pivotally mounting the platen and the envelop-plate, so that the platen and that part of the envelop-plate between the form and the platen will move in the arcs of circles which shall be substantially tangent to each other at or about the printing-point. The platen-arm is therefore pivotally mounted below the plane in which the platen first engages the paper and preferably in substantial alinement with the pivot of the envelop-plate and a point approximately equidistant between the point of first engagement of the platen with the paper and the lowest point to which the platen moves.

Without limiting myself to the exact construction and arrangement of parts herein shown and described, what I claim, and desire to secure by Letters Patent, is

1. In an addressing-machine, the combination of a revoluble drum adapted to support a printing-form, a pivoted arm, a pivoted operating-lever connected with said arm, a platen carried by the arm, and a device at each side of the arm for adjusting the platen.

2. In an addressing-machine, the combination of a revoluble drum adapted to support a printing-form, a pivoted arm, a pivoted oper ating-lever connected with said arm, a platen carried by the arm, oppositely-directed projections on the arm, threaded posts on the platen extending up through said projections, and nuts on said posts for adjusting the platen.

3. In an addressing-rnachine, the combination of a revoluble drum adapted to support a chain of printing-forms, a pivoted arm carrying a platen, a pivoted operating-lever, levers connected. at or about their middle to the operatingdever and at their upper ends to said platen-arm, and an inking device connected with the other ends of said levers;

4. In an addressing-machine, the combination of a revoluble drum adapted to support a chain of printing-forms, a pivoted arm carrying a platen, a pivoted operating-lever, a

pair of levers connected at or about their middle to the operating-lever and at their upper ends to said platen-arm, an inking device, and a frame pivotally connected to the inking device and to the lower ends of the pair of levers.

5. In an addressing-machine, the combination of a revoluble drum adapted to support a chain of printing-forms, a pivoted arm carrying a platen, a pivoted operating-lever connected with the platen-arm, a bed-plate located beneath the drum, and an inking device actuated by the operating-lever to apply ink.

pivotal connection between the inking device and the lower ends of the pair of levers, and

a bed-plate located beneath the drum and behind the printing-form to be operated upon by said inking device.

7. In an addressing-machine, the combination of a revoluble drum adapted to support a chain of printing-forms, a pivoted arm carrying a platen, a pivoted operating-lever connected with the platen-arm. an inking device actuated by said operating-lever and adapted to ink a form suspended from the drum, and a bed-plate provided with an angularly-disposed face located behind the form operated upon by the inking device.

8. In an addressing-machinc, the combination of a revoluble drum adapted to support a chain of printing-forms, a pivoted lever carrying a platen, a pivoted operating-leverconnected with the platen-lever, a bed-plate beneath the drum and having its face inclined to correspond with the inclination of the form suspended in front thereof, and an inking device actuated by the o1 )erat1ng-lever for applying ink to the form while in front of said neath the drum and having its face inclined to correspond with the inclination of the form suspended in front thereof, and an inking device actuated by the operating-lever and comprising a pad having an inclined face to ink the form in front of said bed-plate.

10. In an addressing-machine, the combination of a revoluble drum adapted to support a chain of printing-forms, a pivoted lever carrying a platen, a pivoted operating-lever connected with the platen-level", a bed-plate beneath the drum and provided with two angularly-disposedsections conforming to the position of the two forms suspended in front thereof from the drum, and an inking device having correspondingly-inclined ink-pads actuated by the operating-lever to apply ink to said forms.

11. In an addressing-machine, the combination of a revoluble drum adapted to support a chain of printing-forms, a pivoted arm carrying a platen, a pivoted operating-lever connected with said arm, an adjustable bed-plate beneath the drum, and an inking device actuated by the operating-le\-'er to ink a fresh form and the previously-inked formagainst the bedplate at each operation.

12. In an addressing-machine, the combination of a revoluble drum adapted to support a chain of printing-forms, a pivoted arm carrying a platen, a pivoted operating-lever connected with said arm, a bed-plate adjustably supported in an upright position beneath the drum and having its face divided into two angularly-disposed sections, a vertically-adjustable support, a pair of ink-supply pads re- LII movably mounted in said support and pitched at an angle corresponding to the inclination of the face-sections of the bed-plate, an inking device actuated by the operating-lever to carry ink from the supply-pads to the forms in front of the bed-plate and comprising a pair of pads pitched to make proper engagement with the supply-pads and the forms.

13. In an addressing-machine, the combination of a revoluble drum adapted to support a chain of printing-forms, a feed-dog and a locking-dog to engage notches in the drum, said dogs being located at diametrically opposite sides of the drum so that drums of different sizes with a greater or less even number of notches can be used without changing the dogs, and means for operating the dogs.

14:. In an addressing-machine, the combination of arevoluble drum adapted to support a'chain of printing-forms, a locking-dog engaging the drum, a pivoted plate carrying said dog and having a shoulder, a feed-dog to engage and feed the drum, a rocking arm carrying the feed-dog, a presser-foot pivotally mounted on said arm and arranged to swing on its pivot as it passes said shoulder on its downward movement without affecting the lookingdog, and to engage the shoulder to release the locking-dog on its upward movement.

15. In an addressing-machine, the combination of a revoluble drum adapted to support a chain of printing-forms, a plate pivoted on the frame of the machine beneath the drum, a locking-dog carried by said plate to engage a notch at the front of the drum, a shoulder on the plate at-the back of the drum, a rocking arm, a feed-dog carried by said arm, a presser-foot pivotally supported on the arm beneath the feed-dog and arranged to swing upward on its pivot as it engages said shoulder on the downward movement of the arm, and a pin on the rear end of said presser-foot to engage the arm and hold the presser-foot in rigid operative position to engage said shoulder and swing said plate to release the locking-dog as the arm rises and the feed-dog begins to turn the drum.

16. In an add ressing-machine, the combination of a revoluble drum adapted to support a chain of printing-forms, a feed-dog and a locking-dog arranged to engage the drum and means for operating them, and a lever for releasing said dogs from engagement with the drum.

17. In an addressing-machine, the combination of arevoluble drum adapted to support a chain of printing-forms, a locking-dog and a feed-dog arranged to engage the drum on diametrically opposite sides thereof, means for operating the dogs, and a lever provided with shoulders to engage both dogs and release them from engagement with the drum.

18. In an addressing-machine, the combination of a revoluble drum adapted to support a chain of printing-forms, a pivoted arm carrying a platen, a pivoted operating-lever con nected with said arm, a pivoted plate for supporting the material to be printed, a cam actuated by the operating-lever and provided with a shoulder arranged to operate on the rear end of the envelop-plate to depress the frontend thereof when the platen reaches its elevated position, and a pad carried by said envelopplate to engage the printing-form when said plate is thus moved.

19. In an addressing-machine, the combination of a revoluble drum adapted'to support a chain of printing-forms, a pivoted arm carrying a platen, a pivoted operating-lever connected with said arm, a plate for supporting the material to be printed, a pad carried by said plate and adapted to engage the printingform in printing position, and a finger arranged to retract said pad as the platen descends.

20. In an addressing-machine, the combination of a revoluble drum adapted to support a chain of printing-forms, a pivoted arm carrying a platen, a pivoted operating-lever connected with said arm, a pivoted plate for supporting the material to be printed and provided with an opening above the printingform, a pad carried by said plate, and a cam for depressing the plate and provided with a shoulder for moving said pad into engagement with the printing-form while the platen is elevated.

21. In an addressing-machine, the combination of a revoluble drum to support a chain of printing-forms, an arm carrying a platen, means for operating the arm, a support for the material to be printed, a pad for engaging the printing-forms, means for carrying the pad away from the form, and means for changing the amount of movement of the pad at each operation of the machine.

22. In an addressing-machine, the combination of a revoluble drum adapted to supporta chain of printing-forms, a pivoted arm carrying a platen, a pivoted operating-lever connected with said arm, a support for the material to be printed, a pad carried by said support for engaging the printing form, means for carrying the pad away from the printing-form, and means for causing a different part of the pad to engage the form at each operation of the machine.

23. In an addressing-machine, the combination of a revoluble drum adapted to support a chain of printing-forms, a pivoted arm carrying a platen, a pivoted operating-lever connected with said arm, a plate for supporting the material to be printed, a pad carried by said plate for engaging the printing-form, means for carrying the pad away from the printing-form, a fixed stop, an eccentric forming part of said carrying means, and means for turning said eccentric so that a different part thereof will engage the stop at each operation of the machine and thereby cause a ing rearward of the plate, an eccentric and a ratchet-wh eel rigid therewith and both carried by said rod, a stop on the plate arranged to be engaged by the eccentric, a pin on the 15 plate to operate the ratchet-Wheel, and a spring for returning the pad to its forward position.

JOSEPH S. DUNCAN. Witnesses:

HELEN L. PEcK, WV M. O. BELT.

Images