US989105A

US989105A - Photographic-printing machine.

Info

Publication number: US989105A
Application number: US47490409A
Authority: US
Inventors: Haldor A Anderson
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-01-29
Filing date: 1909-01-29
Publication date: 1911-04-11
Anticipated expiration: 1928-04-11

Description

H. A. ANDERSON.

PHOTOGRAPHIG PRINTING MACHINE.

APPLICATION FILED JAN,29,1909.

Patented Apr. 11, 1911.

5 SHEETS-SHEET l.

H. A. ANDERSON. PHOTOGRAPHIC PRINTING MACHINE.

APPLICATION FILED JAN. 29. 1909.

Patented Apr. 11,1911

5 SHEETS-SHEET 2.

7/ w w w 1 FLA, CW1 0 M m w WW H. A. ANDERSON.

PHOTOGRAPHIC PRINTING MACHINE.

APPLICATION FILED JAN.29. 1909.

Patented Apr. 11, 1911 5 SHEETS-SHEET 3.

i Mm) H. A. ANDERSON. PHOTOGRAPHIGI PRINTING MACHINE.

APPLICATION FILED JAN. 29, 19091 K0154 A WWWX H. A. ANDERSON. PHOTOGRAPHIC PRINTING MACHINE.

APPLIGATION FILED JAN. 29, 1909.

989,105. Patented Apr. 11, 1911.

5 SHEETS-SHEET 5.

indicate like HAIL-DOB A. A DERSO 0F ORT E SOUTH DAK TA- PHOTOGRAPHIC-PRINTING MACHENE.

Specification of Letters Patent.

Ratented Apr. 11, 1911.

Application filed January 29, 1909. Serial :No. 74,204.

To all whom it may concemq Be it known that I, HALDoR A. ANDERSON, a citizen of the United; States, residing at Ortley, in the county of Roberts and State of South Dakota, have invented certain new and useful- Improvei'nents in Photographic- Print-ing Machines; and I do hereby declare the following to be a full, clear, and exact description-of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object :to provide an improved photographic printing machine, and to this end, it consists of the novel devices and combinations of devices, hereinafter described and defined in the claims. Y

The invention :isillustrated in the accompanying drawings, wherein like characters parts throughout the several views.

Referring to the drawings: Figure 1 is a front elevation of the improved machine; Fig. 2 is a plan view of the machine with some parts sectioned on-the line 00 m of Fig. '1, :and with some parts broken away; Fig. 3 is a'vertioal section taken approxi mately on the line (12 m of Fig. 1; Fig. 4. is a view partly in side elevation and partly in vertical section, showing a platen or printing boa-rd and an actuating slide. to which it is hinged with the marking device removed; Fig. 5 is a view corresponding to Fig. 4, but showing the platen in a retracted position; Fig. 6 is a detail view, showing the so called curtain actuating slide sectioned on line .22 m of Fig. 2; Figs. 7 and 8 are detail views in section, showing the construction of the hinges and gage pins of a platen; Fig. 9 is a detail View in plan of an adjustable stop for limiting the movement of the platen actuating slide; Fig. 10 is a fragmentary view in side elevation, showing parts of a connection for actuating a so called vignette curtain; 11 is a detail view partly in plan and partly in section, and some parts being indicated in diagram only, showing on an enlarged scale the so called ribbon receiving and winding device; Fig. 12 is a perspective view showinginea ns for detachably holding one of the'feed rollers shown in Figs. 11 and 16; Fig. 13 is a perspective view of a so called ribbon holding device; Fig. '14 is a detail in section taken approx? mately on the line a2 w of ig. 13, some parts being removed; Fig. '15 is a .view in elevation, SliQWlIlg' a negative plate holder and associated parts; 'Flg. 1 6 is a vertlca'l section taken approximately on the line a m of Fig. -11, son1e parts being left in full, some parts being broken away, and some parts being removed; Fig. 17 is a detai lyiew of certain parts found in the vioinity of the line marked 90" w" on Fig. 2; F g. 18 'is a rear elevation showing the so called vignette curtain and its guide rollers removed from the machine; Fig. 19 is a detail in front elevation, showing the drum and ratchet wheel of the vignette curtain actuating device; Fig. 20 is a fragmentary view of the pants shown in Fig. 19; Fig. 21 is a perspective View of a so called card holder preferably used in connection with the machine; Fig. 22 is a detail view in side elevation, showing a ribbon marking device which is applied to the platen; and Fig. 23 is a front elevation of the parts shown in Fig. 22.

As introductory to .the detail description which will follow, the following remarks are thought to be pertinent: In this improved machine, as preferably constructed, photographc prints may be rapidly made either on a long ribbon or on individual cards or paper sections. When the prints are made on a ribbon, the ribbon is automatically fed intermittently any desired distance, by movements of the so called platen and its actuating slide, so that the photographic print may be repeated over and over again on the same paper or strip. Of course, by changin the negative, any desired number of ditlerent prints may also be made on the said ribbon, and the said ribbon may be either of paper or any other properly sensitized or properly. prepared paper. hen the photographic prints are made on separate cards, these cards will be presented to the negative by a movement of the platen against the negative, and when the platen is retracted, the printed cards will be dropped from the platen and preferably into a suitable receptacle provided therefor.

The preferred construction of the machine is substantially as hereinafter described in detail, and illustrated in the drawings.

"The frame work 1 of the machine is prefera-lily of rectangular construction, being provided on top with a face plate '2, and

having at its rear end an upwardly extended back plate 3 which serves as a support for various devices hereinafter described.

So far as the broad idea of my invention is concerned, the negative rmay be either a at their free ends with pivoted negative clamping bars 7 preferably provided with rubber covered edges 8. The lower arm 6 is pivoted to a thin plate 9, to which the glass pane t is detachably secured by strips 10. The said plate is adapted to be detachably secured in a. recess 11 of the back plate 3 with the plate 4 and negative Z exposed in a rectangular opening 12 formed in said back plate 3. lhc upper arm 5 is pivotally connected to a head 13, which as shown, is adjustably secured on a vertical guide rod 14: attached at its ends to the said plate 5), as shown in Fig. 15. The coiled spring 15, yieldingly connects and tends to draw together the arms 5 and 6. A stop screw 16 Works through a hearing 17 of the plate 9, and adjustably, but positively, limits the downward movement of the lower arm 6, and hence determines the elevation of the negative in respect to the opening 12. The opening 12, the glass plate 4, and the negative Z, it will be noted, are located above the face plate 2 or the frame 1. The platen 18, at its lower end, is connected by hinges 19 to an actuating slide 20 that is mounted to slideon top of the face plateZtowar-d and from the back plate and being as shown, held and guided for such movement by flanged guide strips 21 applied to the opposite edges of the said face pla e A coilee spring 22 tends to turn the pi on back or downward on the slide 20, as own in 5 When the slide 20 is move 3 rearward or toward the back plate 3 to ,vtreme position, the platen 18 is forces gainst the negative plate by means a lever 23 intermediately pivoted slide 20, and having as shown, its upper end that works on b n 25 secured to the back or? .7 end of lever 23 is connec 26, as shown, by and a short coile 5. ac'

nnecte i 3S variably ilifil" secured on the face plate 2, and as shown, arranged to work over a relatively fixed graduated scale As will hereinafter appear, the position of the stop 31 determines the amount of feed movement that will be given to the sensitized paper ribbon under return movement of the actuating slide 20.

, Preferably, the slide 20 is mounted to move on smallrollers 33 interposed between recessed portions thereof and the upper sur face or the face plate The anchoring bracket 26 is made adjustable to set the lever 23 and platen 18 to properly hold either thick card or thin paper between the platen and the negative plate, and the spring 28 insures the proper pressure and guards against extreme pressure on the negative plate. The means for holding these cards on the face of the platen,

while it is being presented to the negative and for dropping the same from the platen after the print has been made, may take various forms, but in Figs. 4:, 5, 7 and 8, it is shown as allorded by so called gage pins ZE-l mounted for endwise movements in the lower portion of the platen 18. The heads of these gage pins are subject to the free ends oi lea-f springs 35, the other ends of which springs are secured to the top of the slide 20. The ends of the said spring 35 are so curved, that when the platen is turned downward or retracted from'the negative plate, as shown in Fig. 8, said springs will cause the ends of said pins to project and afford supports for the lower edge of the card Y, see Figs. 5 and 8. Preferably, the gage pins 3i are provided with rubber tips and the platen 18 is covered with a cloth facing. ll hen the platen with the applied card Y is turned against the negative plate, the pins 3% are pressed backward as shown in Fig. i, and the curved end of the springs then press the heads of the said pins at such angle that friction will be suliicient to hold the pins in their retracted positions until the platen is again turned nearly backward to the position shown in Figs. 5 and 8. Hence, under initial movement or the platen away r'ro-nr the negative plate after the print has been made on a card, the said printed card will be free to fall om the platen through a suitable passa e in the rear end portion of the face i onto an clined chute 36, l y which l 1 shown,

it will be directed a 2 ll mounted ew Alald mecln frame 1,below the face plate2 and above the drawer37. These drawers 38 while desirable, are not necessary and form no part of this invention.

The slide 20 spring retracted orinoved away from the negative plate and preferably, this is accomplished by a quite heavy coiled spring 39 attached atone end to the bottom of the face plate 2, and at its other end to a perforated strap 40, that runs over a pin wheel or hub 41 carried by a small vertical shaft 42, mounted in suitable bearings on the lower portion of the back plate 8. The other end of this strap 40 is attached to one side of a slide 20. For the construction just described, see Figs. 2, 3 and 17. The spring 39 is, ofcourse, more than strong enough to overcome the spring 22.

For a purpose which will presently appear, the so called pin wheel or hub 41 is formed with ratchet teeth 43 on its upper edge so that it constitutes one member of a clutch device shown in Fig. 16.

To reinforce or augment the action of the spring 89, a,secondary spring device is employed. As preferably constructed, this secondary spring device comprises a bell crank lever 44 which is pivoted to a bearing 45 shown as secured to a horizontal partition 1 of a frame 1. The relatively short lower arm of this bell crank 44 is subject to a leaf spring 46, secured at one end to the said partition 1*, and having at its free end a seat 47. The relatively long upper end of said bell crank lever 44 is shown as provided with a roller that works bctween relatively long and short bearings 48 and 49 secured to the bottom of the slide 20, and depending freely through an elongatedslot in the face plate 2. The operation of this device is as follows: \Vhen theparts are in the position shown in Fig. 3, the roller equipped upper end of the bell crank is pressed against the short, bearing 49 under the action of the spring 46 on the lower arm of said bell crank; and hence, at this time, the spring 46 cocperates with the spring 39 to insure sutiicient force to cause the platen 18 to tightly press the card Y against the negative plate. When the slide 20 is drawn outward or retracted approximately to an intermediate position, the end of the lower arm of the bell crank 44 passes into the seat 47 of the spring 46,. and the roller atthe end of the upper arm of said bell c ank passes under the shortbearing 49, so hat the said slide 20 may befreely moved onward to its extreme outermost or ret-ractefd position. When the slide 20 is moved forward, the long bearing 48 engages the roller at the upper end of the bell crank and'forces' the same upward between the said two bearings 48 and 49, and positively forces the lower arm of said bell crank out of the seat supported by a bracket 51 secured to the back plate 3 above the opening 12 thereof. At its front end, this holder is shown as provided with an inclined end plate 52, and is also shown as provided with an inclined follower plate 53 having a projecting operative bail 54. \Vhen the hinged end plate 52 is forced upward, and the follower is forced, forward, a stack of cards contained in the holder may be shifted so that their ends project successively in the same direction, thereby facilitating the picking up of the cards.

The paper ribbon Y upon which the prints may be successively taken, is primarily rolled and preferably contained within a holding-drum 55, see Figs. 1, 2, 3 and 13, which holder is provided with a hinged side section 56. 5 The dr p 11 55 is rigidly secured to a rectangular supporting frame 57 that is mounted to slide verticallyupon the back plate 3. The free edge of the hinged section 56 is shown as provided with projections 56 adapted to be sprung into.

notches 58 of upper and lower flanges 59. As shown in Fig. 14, the frame 57 has vertical retaining strips 60 that are adapted to slide upon a-thin sheet metal plate 61, which in turn, is directly secured on the back plate 3. As shown, the-drum 55 is applied to the left hand end of the vertically adjustable supporting frame 57. To the right hand end of the said supporting frame 57, a ribbon winding or rolling mechanism is applied. This winding -mechanism, as shown, comprises as follows: This mechanism is best shown in F igs. 1, 11, 12 and.16. On open ended receiving cylinder or drum 62 is rigidly secured in an upright position to the.

right hand end of the vertically adjustable bearing frame 57, by means of brackets 63, see Figs. 11. and 16. At its left hand side the receiving drum 62 has a lateral entrance passage 64 for the paper ribbon or strip Y An approximately conical drum bottom v65 is located below the. drum 62, and is rotatively mounted in a bearing plate 66 rigidly secured to the frame57. The spur gear 67 is secured-to the rotary bottom 65, and an upwardly extended shaft 68 is secured at its lower end to the said rotary bottom 65, and projects upward axially through the receiving drum 62. A coiled spring blade 69 is secured at the .inner edge to the shaft 68. The outer edge "of this spring blade 69 is spring pressed againsb the very smooth inner surface of the receiving drum 62, and

aim.

to give the same greater frictional contact I 57 and the ribbon actuating devices which with the paper ribbon Y than there is be tween the said paper ribbon and the smooth inner surface of the drum G2, a thin sheet of rubber cloth or other material is preferably secured to the said spring blade 69, as shown in Fig. 11. The gear 67 meshes with a gear 71 secured on the lower end of a vertically disposed teed roller 72, the shaft of which is mounted in suitable bearings 73 on the bearing frame 57. A small idle ribbon pressing roller 74 is movably mounted in the bearings 73, and is shown as spring pressedagainst the feed roller 72 by leat' springs 75, secured at one end to the frame The gear 71 meshes with an intermediate gear 76 mounted in suitable bearings 77 secured on the lower portion of the frame 54. The intermediate gear 76 meshes with a driving gear 78, which as shown, is connected by a contracted neck 7 9 to a sleeve 80, that is telescoped into the lower end of a feed roller 81, and is rigidly secured to said roller. At its upper end, this roller-8l is provided with a headed trunnion 82 journaled in a 4 bearing bracket 83 secured to the upper portion of the frame 57. The roller 81 is there- :tore, capable of swinging movements at its lower end, but is normally held against such swinging movement by a forked bearing 8 1- and coiiperating spring 85, the former of which embraces the neck 79 of the roller sleeve 80, and the free end of which spring engages an annular shoulder of the gear 78 and yieldingly holds the roller 80 against outward swinging movements, See Figs. 12 and 16. A small idle pressure roller 86 cooperates with the roller 81 and is spring pressed toward the sameby leaf springs 8? applied to the upper and lower portions of the frame 57. The roller 86 is provided at its ends with trunnions that work in slots of the upper and lower bearings 83 and 8st respectively, and the springs 87 directly engage said trunnions, see l igs. l2 and 16. A plunger 88 is mounted for axial movements through the gear T8 and its neck ?9 and is connectedto rotate with the roller 81, as shown by a cross pin 89 secured to the upper end of said plunger and seated in vertical slots of the roller sleeve 80. A coiled spring JO yieldingly presses the plunger 88 downward. iiiigidly secured to the plunger 88, below i -'ear T8, is a half clutch 91 that engage the half clutch d3 of the also, the plunger 88, below is formed with a conical i to engage the conical pin the ha point tl ollers and 86 may covered.

printed, the

are carried thereby, are moved upward on the back plate 3 to the inoperative position shown in Fig. 3, and in this position, the ribbon and its actuating mechanism is preterably contained within a dark box 92 which is provided with a hinged drop bottom 93. in practice, the card box 50 will be offset to one side of the machine so that it does not interfere with vertical movements of the frame 57. When the prints are to be taken on the ribbon, the frame 57 is lowered and the ribbon actuating mechanism is positioned as best shown in Figs; 1 and in this lowered position, the ribbon Y will be -fed between the negative plate Z and the platen 18 and by the platen will be pressed against the negative plate, when the slide 20 is moved to its extreme position toward said negative plate. Also at such time, the feed roller 81 is directly connected to the shaft 12 by the engaged clutch members 48 and 4-1, and the feed roller 7'2 is indirectly connected thereto through the ears 71, ?6 and 78, so that each time the slide 20 is moved outward to contract the platen, a step 01'? movement will be imparted to the paper ribbon Y The extent of movement thus given to the ribbon will depend on the amount of outward movement given to the slide 20, and through the strap 4-0 to the pin wheel 41. As already stated, the outward movement of the said slide 20 will be variably limited by the adjustable stop 31. The gradnations on the scale 32 indicate the position of the stop 31 for different width photos, such as quarter cabinet, half cabinet three quarter cabinet and cabinet. Obviously, the winding shaft 68 and its blade 69 are rotated simultaneously with rotation of E

e feed rollers

72 and 81. The spring blade 69 will press the inner end of the ribbon Y against the inner surface of the drum 62 and cause the same to be wound into a coil. The coiled paper or ribbon will drop into the conical rotary bottom and the latter by its rotary movement, will assist in keeping the paper coiled. "When the ribbon has been printed and delivered into the drum 62, it may be readily lifted out of the upper end thereof. The purpose of conner the roller 81 for swinging movements the roller is to permit the paper when to be engaged and started on its trav l en. the said twc lers. At any time, may be cut or the rollers '7 the pm matic marking device, as shown in Figs. 1',

as shown in the form of a screw closed split sleeve 96, adapted to hold a short pencil 97.

A spring 98 applied to the arm 94 and bear-- ing 95 yieldingly holds said arm 94 against a stop 99 on one end of the platen,and with the point of the pencil projecting beyond the face of the platen, as .best shown in Fig. 22, so that when the platen is forced against the ribbon, the point of the pencil will be moved downward on the ribbon and make a mark on the back thereof.

' The light controlling curtain 100, see Fig.

3, is mounted on an automatically spring wound roller 101 of the window shade type, which is supported by the back plate 3 just above the llght opening 12. To the lower edge of this curtain 100, the upper ends of a pair of cords 102 are attached. These cords extend downward under guide sheaves 103 mounted in openings in the lower portion of the back plate 3, thence upward over similar guide sheaves 104 mounted in the same way in said plate 3, and located very slightly below the face plate 2.' From the .sheaves 104, the cords 102 exten below the face plate 2 and are attached to depending ams 105, see Figs. 3 and 6 of a sup lemental slide 106 mounted to slide on top 0 the main slide 20 and also held by the flanged guide strips 21. The arms 105 are afforded by the downturned ends of an operating bail or hand piece 107, which is secured to the top of the said supplemental slide 106. A coiled tension spring 108 connects the supplemental slide 106 to the rear portion of the main slide 20, being as shown, attached at. its other end to a stop bracket 109 secured to the outer edge of said main slide 20. This stop 109' limits the outward movement of the supplemental slide on the main slide, and the said spring tends to hold said supplemental slide engaged with the said stop.

The hand piece 107 on the supplemental slide 106 affords the primary means for actuating the platen, the light curtain and the ribbon feeding mechanism. Normally the spring 39 holds the platen in its operative position against the negative plate as already described. Normally also the spring 108 will hold the supplemental slide 106 against the stop bracket 109 'of the main slide 20, in which position the light controlling curtain 100 will be drawn downward over the light, passage 12. The curtain 100 is raised as shown in Fig. 3 by forcingthe supplemental slide 106 into its extreme position shownin said Fig. 3, againstthe tension of-the spring 108. Hence, it is necessary to positively hold the supplemental slide 106 in itsinnerdog 119 pivoted to said case 1.

most position shown in Fig. 3, long enough to permit the taking of the print, which will, however usually be but a few seconds. When the print is taken, if the supplemental slide be released, the spring 108 will force the same outward against the stop bracket 109, thereby drawing the curtain 100 into its closed position while the platen is still held against the negative plate. To move the platen from the negative .plate, the supplemental slide 106, which engaged with the bracket 109, is drawn farther outward, thereby carrying with it the main slide and forcing the platen into its retracted position shown in Fig. 5. The spring 108 should be of greater tension than the spring 39, so that under inward movements of the two slides,

A vignette curtain 110 located outward of the light controlling curtain 100, is connected at its upper end to a spring acting roller 111 mounted on the upper portion of the back plate 3. This curtain 111 at its lower edge, has depending strap portions 112 that are secured to a roller 113 mounted in bearings on the lower portion of the back plate 3, and provided at one end with a sheave 114 to which a cord 115 is attached, the other end of said cord being extended forward and attached to a drum 116 mounted on one side of the lower front portion of the case or frame 1, see Figs. 3, 10, 18, 19 and 20. The drum 116 is provided with an operating crank 117 and with a ratchet wheel 118, which latter is adapted to be engaged and held by a lock As is evident. the pawl and ratchet device 118119 seri e to hold the curtain 110 with any one of its several light passages alined with the light passage 12, and the back plate 3. The.

curtain 110 is preferably made of the customary 'material. trolling curtain 100 is preferably made of asuitabletranslucent'cloth or material colored yellow or some -other.color,, which will ob- 'struct' light'rays such as required to print the negative. Thiscurtain from a broad point-of view, performsth'e function of a shutter, but is preferably made translucent so that the operator may see to properly set the negative from the dark. room. 1

In practice, I apply a register or counter which is autonr'iaticalh operated by movemonts of the platen toward and from an The so called light con-' i operative position to indicate the number of prints successively taken from the same negative.

What I claim is: u

1. In a machine of the kind described, the combination with a negative holder, of a slide movable toward and from the said negative holder, a platen carried by said slide and movable thereby against and from the negative holder, and a ribbon-feeding mechanism actuated by said slide and arranged to feed the ribbon bet-ween sai d negative holder and platen.

2. In a machine of the kind described, the combination with a negative holder, of a slide movable toward and from the said negative holder, a platen carried by said slide and movable thereby against and away from said negative holder, and a ribbon feeding mechanism having feed rollers and roller driving connections to said slide.

3. In a machine of the kind described, the combination with a movable platen, of a ribbon feeding mechanism movable from an operative to an inoperative position without being detached, and vice versa, the said rib bon feeding mechanism holding the ribbon in front of the space occupied by said platen, when the latter is in an operative position.

4. The combination with a platen and a negative holder and means for moving one thereof in respect to the other, of a ribbon-' feeding mechanism having feed rollers, and means operated by said movable member for moving said feed rollers intermittently.

5. In a machine of the kind described, the combination with a negative holder, a platen and a platen-actuating mechanism, of a ribbon-feeding mechanism movable to and from an operative pos1t1on in respect to said negative holder and platen, and a driving con- .nection between said ribbon-feeding mechanism and said platen-actuating mechanism, including a clutch, the members of which are separable and are engaged when said ribbon-feeding mechanism is in an operative position.

6. In a machine of the kind described, the combination with a negative holder, a slide and a platen hinged thereto, of means for moving said platen into a vertical position when said slide is moved toward the negative holder, and for turning, said platen downward when said slide is retracted, a card-holding device appliedto said platen, and means for moving said card-holding device into an operative position when said slide is retracted and said platen turned downward, and for moving said card-holding device into an inoperative position when said platen is moved into an upturned operative position against the negative holder.

7. In a machine of the kind described, the combination with a negative holder, a slide and a platen hinged thereto, of means for seams moving said platen against the negative holder when said slide is moved toward the negative holder, and for turning said platen downward when said slide is retracted.

8. In a machine of the kind described, the combination with a negative holder, of a slide, a spring-retracted platen hinged to said slide, a platen-actuating lever pivoted to said slide, and an anchor connection to said lever, causing the same to force said platen into a vertical position against the negative holder when said slide is moved toward the negative holder, but permitting said platen to be turned downward when said slide is retracted.

9. In a machine of the kind described, the combination with a negative holder, of a slide'movable toward and from the negative holder, a platen carried by said slide, a movable curtain Working in front of the negative holder, and a connection between the slide and the curtain whereby movements of said slide move-said curtain.

10. In a machine of the kind described, the combination with a negative holder, of a slide, a spring for moving said slide toward the negative holder, a platen hinged to said slide, a spring tending to move said platen pivotally downward, but having less tension than the slide-actuating spring, and meanslfor forcing said platen into an upturned operating position when said slide is moved toward the negative holder.

11. In a machine of the kind described, the combinationwith-a negative holder, a slide and a platen carried thereby, of a primary spring device tending to move said slide and platen toward said negative holder and a secondary spring device reinforcing the action of said primary spring device when said platen is moved into an operative position. i

12. In a machine of the kind described, the combination witha negative holder and a movable curtain normally located in front thereof, of a primar slide, a platen carried by said primary side, a secondary slide having a limited movement in respect to said primary slide, and a connection between said secondary slide and said curtain for moving the latter with a properly timed action in respect to the movements of said platen.

13. In a machine of the kind described, the combination with a negative holder and a curtainnormally located in front thereof, of a primary slide, a spring tendin to move said slide toward said negative older, :1 platen carried by said primary slide, a secondary slide having a limited movement in respect to said primary slide, a spring connecting said two slides and tending to move said. secondary slide toward the outer extremity of said primary slide, anda connection between said secondary slide and said curtain for moving the same with a properly timed action in respect to the move ments of said platen.

14. In a machine of the kind described, the combination with.a negative holder, of

a slide movable toward and from the same,

movement imparted to the ribbon may be varied by variations in the movement of said slide away from said negative holder.

15. In a machine of the kind described,

the combination with a negative holder and a platen movable toward and from the same, of a light-controlling curtain movable in front of the said negative holder, and a. vignette curtain to move inside of said lightcontrolling curtain.

16. In a machine of the kind described, the combination with a negative holder and a platen and means for moving said platen toward and from said negative holder; of a ribbon-feeding mechanism arranged to feed a ribbon between said negative holder and platen, and an automatic marking device applied to said platen and operative to mark said ribbon when said platen is forced against said negative holder.

In testimony whereof I aflix my signature in presence of two witnesses.

HALDOR A. ANDERSON.

WVitnesses H. D. KILGORE, ALICE J. SWANSON.