US1656979A - Photomechanical machine - Google Patents

Description

Jan. 24, 1928; 1,656,179

H. C. JONES PHOTOMECHANICAL MACHINE Filed March 14. 1924 6 Sheets-Sheet l avwemtoz C $51 Gr mm lugs Jan. 24, 1928.

H. C. JONES PHOTOMECHANICAL MACHINE Filed March 14, 1924 6 Sheets-Sheet 2 Jan. 24, 1928.

H. .C. JONES PHOTOMECHANICAL MACHINE Filed March 14. 1924 6 Sheets-Sheet 3 Jan. 24, 1928.

H. c. JONES PHOTOMECHANICAL MACHINE Filed March 14. 1924 6 Sheets-Sheet 4 Jan. 24, 1928.

H. C. JONES PHOTOMECHANICAL MACHINE Filed March 14. 1924 6 Sheets-Sheet 5 a m m1 1 whu i LIN;

3 0 w i W A u x, M m.

Jan; 24,

Filed March 14. 1924 H. C. JONES PHOTOMECHANICAL MACHINE 6 Sheets-Sheet 6 auoeutoz Patented Jan. 24, 1928.

UNITED STATES its-aw PATENT OFF-ICE.

HARRY c. JONEB, or LARCBMOM, NEW Yomgassmnon, o, mnormnx 0onrom'rxou, or mew You, 1;. in. a conromnon or Imw: u

'rno'roxzcmlcar. Application filed larch 4, 1m. Serial in. 890,101.

This invention relates to photomechanical.

machines, i. 'e. machines for reproducing a design'from a photographlcplate onto a sen-. sitized surface, and more particularly lto a machine for repeating and properly spacing a design to be reproduced from ajpliotographic plate'ontoa sensitized surface.

In the present form ofytheinventiop am .fl. ph w m m'g achine of'the form of chine is shown;

An object of the invention is to roduce a comparativel simpleeflic'ient; an accurate machine of t e character described-in which the photographic plate and. sensitized s ur-'- facc may be easily and eflicientl handled and which can be easily operated or rapidly and reliably reproducing a, design from the photographic plate onto the sensitia disub. 7

face.

Another object isto providea machine-in which the photographic plate may be=-readil moved into intimate printing-contact wit the sensitized surface without anyr daiiger of damage to the photographic plate.

Further objectsand adv'an'tages ui e inI-J vention will more fully appearfromthe following description in connection with the accompanying drawings illustrating by way of example the preferred embodiment ofthe invention. 7

Referring to the drawings: Fig. 1 is a front elevation.

Fig. 2 is a side elevation lookingi'toward' the dial end of the machine with a part broken away.

Fig. 3 is a section taken. on lme 3- 30! Fig. 1. Fig. 4 is a section taken therein.

Fig. 5 is a detailed end Vi w of-on'e of the motor drives mounted on the carriage.

Fig. 6 is a section.

and in printing position with regpect the sensitized surface.

Fig. 8 is an enlarged'section of aportion of the vacuum frame.

tion with" respect t .cu'itsaand their controls.

. l of Fig. 3 and shows the base of, the machine togetherwith the driving motors-mounted supportingfi guideway for a Fig. 10 is a detailed vi'ew ofthe clamping means for drawing the plate. for the sensitized zinc iintov its propenvertica'l pnsi;

frame.

fig. 11 is" side view modified-dial and associated parts.

. Fig. 12 is an endyiew ofFi 11.

Fig. 13-18, anenlarged-det ofFi .11." Fig. 14 IS a diagram ofthe electrical 'eir- Supporting atmctwe. Referring to' the drawings. and more par-'- ticularly toFigs. 1, ,2 and 3, the supporting structure of this machine; comprises chiefly a b'asememberfl. comprising a lower portion .2 gjandj cover portions 3' and-4 Fig. 3) upon which-are mountedsubstantially vertical u right-members 5-.and fiybracedatthetdp y a transverse membec 'l. Upon thiss tructure so formed :is mounted the .mechanism to be mofie paiiticularly t'o-Fi 1, 2 and 3 'the-t o-nprightmeiiibei-s 5 an '6 am provided with dove-tails on their front sides adapted to engage-,- and on which are mounted, cooperating dove-tail grooved ver-. tical carriage; member's-8 and 9, one of the dovetail members being mountedon each of the uprights- 5 and 6 respectively. These members 8 and 9 are held in propertrelation and tied jtogetheu by, laterally. extendin upper andylower. carriagemembers 10 an ll respectively. The, up rimembe'r being attached to'the upper encfiif the members 8 and 9 and being of substantially" L section,

while the lower member 11', is" attached to the f lower end of the vertical members send 9 plan view-of Fig. 5, partlyin and is of substantially an H box section.

i 1-,The membersl8,'9, 10 and 11 constitute what Fig. 7 is a sectional view oftheplate' holder showing a vacuum framefa'ttachedl may be termed a vertically movable carriage. These horizontal members 10 and 11 form a I holder which carries the photographic plate.

The members 8 and '9 are each provided with a bronze nut 12 1 and 2) mounted in recesses at theu', lower ends and e main supporting V engaging vertical jack screw members 13 and 14, one ]8.Cli screw bein mounted adjacent each of the upright mem rs and 6, respectivel Upon the rotation of the jack screw mem rs 13 and 14 the vertically movable carriage is moved up and down into proper position, as will be hereinafter described.

A horizontally movable carriage known as the plate carriage is composed of'members 15, 16, 17 and 18 and is mounted upon the members and 11. For this purpose members and 16 are provided with recesses engaging cooperating portionsrespectively on members 10 and 11. Attached to the under side of member 16 (Fig. 3) is a bronze split nut 19 engaging a horizontal lead screw 20 mounted within the box section member 11. When the lead screw is rotated nut 19 is moved and the late carriage is caused to move alongthe rst carriage.

The members 15 and 16 are provided with longitudinally extending recesses and mounted one in each, respectively, are shafts 21-22. These shafts each carry at each end spur gears 23-24 res ctively engaging respective racks 2526 which are attached to a vacuum frame holder to be described following. On one end of shaft 22 is attached alever 27 (Fig. 2) for imparting to the shaft a rotary motion. This lever carries a bell-crank 28 which through a suitable connecting link 29 and a cooperating bell crank 30 also operates shaft 21 to impart a rotar motion to the same. This bell crank an its cooperating lever are set to one side of the center so that upon rocking the lever to one side or the other a suitable spring 31 holds these shafts in either one position or the other. It will therefore be ,seen that by rotating these shafts, by the movement of lever 27, the vacuum frame holder 32 is moved back and forth in a direction normal to its motion along members 10 and 11.

Vacuum frame hoZder. The holder 32 (Fig. 3 and 7) is slidably mounted in the plate carriage and is grooved on its face as at 33 to receive an annular flange 34 on plate'35. This plate is held to the holder body (Fig. 1) by bolts 36 movable in slots 37 in each corner of the holder body 32. On the front of this plate aremounted strips 38 and 39 (Figs. 3 and 7) which form a flange upon which *the vacuum frame proper may be supported. These strips carry dowel pins, or dowel holes which engage portions of a vacuum frame to bring the frame in proper registration with plate 35. To angularly adjust the plate and the supported vacuum frame a screw adjustment 40 (Fig. 1) is provided, operated by a hand wheel 41 in connection with a bracket 42 to rock plate 35 with respect to holder body 32. A vernier scale 43 is placed in proper position to show the movement of this plate with respect to the holder bod This rocking movement is necessary to s. just the vacuum frame angularly in its vertical plane.

Horizontal movement of holder on can'iago.

As already stated, attached to carriage member 16 is a split nut 19 coo ratin with a lead screw 20 to impart to t e carriage a horizontal movement when the lead screw 20 is rotated. To one end of this lead screw is attached a counting head 44, such for example as that fully set forth in m co nding United States patent application rial #694,194, filed Feb. 21, 1924, which ma be set to obtain the desired movement. 0 other end of this lead screw carries a s or gear (Figs. 5 and 6) 45 keyed thereto, an in .mesh witha driving gear 46 splined to shaft 47 of motor 48, which is mounted on carria member 11 by a suitable bracket 49 attached thereto. The splined gear 46 is movable out of mesh with gear 45 by raising catch 50 and withdrawing handle 51 attached to gear 46. When it is desired to release the motive means and drive the lead screw 20 manually, this driving gear 46 is withdrawn.

When it' is desired to move the holder 32 by motive means the motor 48 is operated and, throu h the gears 46 and 45, the power is imparte to shaft or lead screw 20 which moves the nut 24 attached to the carriage which supports" the holder.

A spur gear 53 is also attached to lead screw 20 to drive the same and is inmesh with a gear 54 attached to shaft 55, which is supported by the earria e member 11, to be rotated by or to rotate he same. Shaft 55 has a keyway 56 extending substantially its entire length and slidably mounted on this shaft and keyed to this keyway is a bevel gear (Fig. 3) 57 in mesh with a. bevel gear 58 attached to a-stub shaft 59, extending perpendicular to 'the shaft 55 and mounted in a box 60 and adapted to be rotated by a hand wheel 61. The box 60 is slidably mounted on the carriage member 11 and is provided with a lug 62 disposed between lugs 63-63 on-the carriage frame member 16 with a slight lost motion therebetween, in both directions, to prevent binding.

Upon the rotation of the hand wheel 61, and the corresponding movement of the bevel gear 58, the gear 57 together with the shaft to which it is keyed. is rotated and the gear 54 at the end of the shaft drives the gear to rotate the lead screw 20 and a horizontal movement is thereby imparted to the carriage.

For a finer adjustment in this horizontal movement, a worm wheel 64 (Figs. 1, 2 and 9) is mounted on the stub shaft 59, and engaging this worm wheel is a worm 65. on the end of which is a hand wheel 66. This worm is normally out of engagement with the worm whcehas it is pivoted free. to swing away by gravity. .A lever 67 is provided for moving this worm intoengagemeut with the worm wheel. and' a .proper stop not shown is provided to take care of the correct meshing of these members when the worm is moved into engagement. By means of this worm and @its cooperating parts. through the rotation of the hand wheel 66. a very tine. adjustment can be given to the holder in a horizontal direction. During the manual operation-it is of course possible to leave the. motor 48connected to the lead .-a- 20 and thereby rotate the motor til'llltttlllt together with the lead screw. However it isdesirable for obvious reasons to disconnectthe motor, and this may be accomplished by disengaging the driving gear 4.6 (Fig. 6) from the driven gear -15 as set forth above.

.-\nother manual means of operation is provided in connection with the counting head -14. A handle 68 (Figs. 1 and 2) is provided and is attached to the lead screw in a manner more particularly setforth-in m v copending application for lnitedsStates Letters patent, Serial- #694.19f1 mentioned above. A pin'69 acts as a driving connection, between this handle and the lead screw so that when it is desired to do so the-handle 68 may be used to manually drive the lead screw.

Operation of jack screws for v'm parting rertical motion to carriage.

The connections between jack screws 1 and 14 and the carriage have been described above; and means for rotating these screws will now be described.

Referring more particularly to Figs. 1, 2, 3. and 4: Journaled in the lower portion :3 of base member 1 is a shaft 70 extending longitudinally thereof. This shaft carries at each end a gear 71-72 respectively, meshing respectively with cooperating gears 73- 41 carried respectively on the lower ends of the jack screws 13-44. Shaft 70 carries at its mid-point a spur gear 75 in mesh with an idle gear 76 supported by a hanger 77 attached to the base member 2; and gear 76 likewise is in mesh with a driving gear 7.8 keyed to shaft 79 of an electric motor 80 mounted on part 2 of base 1. This motive connection is made at substantially the midpoint of shaft 70 so that the angular degree of torsion of the shaft may be equally divided between the two ends and therefore the two jack screws will be more uniform y driven at any movement and hence the carriage will be uniformly moved at any movement.

A spiral gear 8] attached to the end of shaft 70 (Fig. 2) and is in mesh with spiral gear 82 attached to shaft -3. counting head 44' such for example as is described swing therebout.

in my copending application for Unit d States Letters Patent Serial #694,194, filed Feb. 21, 1924, is attached to shaft 83 and this counting head has a handle 68' adapted to be connected to the shaft through pin 69' so that the shaft 83 may be rotated manually and the rotation imparted to shaft 70 and thence to jack screws 13 and 14 to more the carriage, in the manner set forth above.

[fr/ac plate support and mechanism for operating the same.

The base plate for sup rting the zinc sensitized surface is cart-1e on the supporting arms 84 which are pivoted on a pivot shaft 85 and supported by brackets 86 attached to base 1, and are held in spaced relation andbraced by a cross member 84 (Figs. 3, 2 and 1). Quadrants 87. are ivotally mounted on the ends of shaft 85 ree to These uadrants each have a lug, 88 bolted at one en of the are disposed between lugs 89-89 bolted to the supporting arms, so that any rotary motion by the quadrants about pivot 85 will move the supporting arms 84, but with a certain amount of lost motion therebetween. Referring more particularl to Fig.2. The quadrants 87. arev provide: with worm teeth meshing with worms 90 are supported in brackets 91 mounted on base 1, and'attached to the same shafts which support these worms are worm wheels '92 each in mesh with a worm 93 carried on each end of a shaft 94 (see also Fig. 4) supported on the lower part 2 of base 1. At substantially themid-point of shaft 94a spur gear 95 is keyed and is in mesh with a spur gear 96 on shaft 97 0f motor 98 mounted on part 2 of base 1. As in the case of the carriage drive this motor drives the shaft 94 from its mid-point thereby dividing up the torsion substantially equally between the two ends. To raise the base plate supports. motor 98 is operated to drive shaft 94. which rotates worm 93. driving worm wheel 92 to rotate the shaft carrying worm 9 0 which raises the quadrant rack 87 carrying lug 88. which engages lug 89 to thereby raise the supports 84 on which is mounted the base plate to he hereinafter described. Stands 99 (Fig. 3) are. bolted to the base 1 for holding the supports 84 when they are in horizontal position. the adjustment 100 being used to keep the supports level.

Base plate amt its attachments.

The base plate 101. for holding the sensitized surface such as a zinc plate 101, is attached to its supporting arms '84 by means of L clamps 102 bolted one on each side of the base plate by bolts 103, with their lower ends engaging respectively the supporting arms 84. These L clamps hold the base plate to its supporting arms when it is being moved to its printing position. To support it when in a vertical osition a lug 104 is bolted to each supporting arm (Fig.3) adjacent the pivot/end; by -means.--,of a cap screw engaging one of a series of screw holes 105 for adjustablypositionin the base plate on the supporting arms. hese lugs 104 abut against a shoulder 106 projecting from the base plate. This adjustmentserves to move the base plate to a higher tinting position and is desirable when designs are to be printed on the uppermost portion of the sensitized zinc attached to'the base plate. The .zinc plate is held onsthe' base plate by split clamping blocks "10? and 108 and or by suitable vacuum meanssuch as described in my copending' ap lication. for United States Patent Serial is e, 618,217, filed Feb. 10,1923. If the vacuum holding means is utilized the plate surface may be provided throughout with crossing. grooves 101 communicating with main marginal grooves 101 to which a vacuum pump may be connected as at 101. If a small zinc plate is used block-109 may be removed and split blocks similar to 107 placed in the re cess 110 to hold the lower end of-the plate, the' upper end being fastened ,in'blocks 108 as in the case of the lar er zinc plate.

To properly adjust t e upright or printing osition of the base plate, and the sensitized zinc carried thereon, with respect to the members 5 and 6 of the main frame, a

bracket 111 (Fig. 10) is attached to each side of the base-plate and adjustable stop members are supported therein. These sto members are composed of-a stud- 112 threa ed into the bracket and provided with a 5 wire head orti0n,,a rubber piece 113 igs. 2 and 1 on the end adapted to come into contact with the frame members 5 and 6 res ectively; and a lock-nut 114 for locking t e stud in the desired position.

0 clamp the base plate in its proper upright position to frame members 5 and 6, the following means is provided. Referring to Figs. 2 and 10, a bracket 115 is bolted to the under side of the base plate adjacent each edge thereof, and carries a sl'idable shaft 116 having a cam 117 at one end and a handle 118 at the other end. A spring 119 (Figs. 1 and 10) normall holds the cam against the bracket. A 2 bar 120 isv bolted to each of the frame members 5 and 6 in such a position that cams 115 lie contiguous thereto when the base plate is in its raised position. Then the base plate is in its u right position the handles 118. are pushe outwardly toward the outer edgesof the base plate compressing springs 119 until the cams 115 come behind the outwardly extending flange of the Z bar and the handles are then pulled down thereby bringing the cams into operation against the 2 bars to force the base plate stops 112 against the frame, and

ilrpplication and in my United States Vacuum frame mou/nting on holder.

The frame for holding the photographic plate is'preferably a vacuum frame such for example as one of the ty es disclosed in my copendin application or- United States Letters atent- Serial #615,487,.filed Jan. 29, 1923, and such features of the invention pertaining to the vacuum frameper se not claimed herein are claimed in said atent atent 0. 1,478,828. Refer-ring more particularly 'to Figs. 3, 7, and 8. The vacuum frame 121 is provided with. dowel'pins 122 adapted to engage dowel holes 123 in strips 38 and 39 'carried by the frame holder in the manner hereinbefore stated. The photographic plate may be attached to the rame in any suitable way such for example asby clam in strips 124 and cooperating pins 125 w 'cli secure] hold rubber'strips 126 attached'to a celluloid sheet 127 to which is cemented the photographic plate 128. A sealing strip 129 surrounds the frame and an air outlet 130 is provided opening into the space so bound: ed. This air outlet is connected to a suitable vacuum pump (not shown) for purposes tobe described following. It will be understood that the vacuum frame shown is merely by way of example and that any suitable t e may be used which will admit of the desired operation.

Limit stops.

In order to prevent the machine from being damaged by the excessive movements of the carriage vertically, and horizontall and of the base plate about its pivot, by their respective motive means, limit stops are provided to cause the motive means to become inoperative before the damaging position has been reached.

Referring more particularly to Figs. 1, 2,3 and 14, a double throw electrical switch 131, in the electrical circuit of motor 80, is mounted on the frame member 6 in such a position that as the carriage approaches its safe lowermost limit an arm 132 attached to upper carriage member 10 will operate the switch to open the circuit to motor 80. A similar arm 132'attached to carriage member 11 operates the switch in' a similar man ner when the carriage approaches its safe uppermost limit and with similar results.

Two single throw electrical switches 133, 133 (Figs 1 and 14) in the electrical circuit of motor 48, are mounted on member 10, one

adjacent each end, and are adapted to be operated b a trip arm 134 on the sub-carriage mem er 15 so that as the horizontall movable carriage approaches either its le t hand or right hand safe limit, this trip arm operates one of the switches- 133, 133 to cause the motor 48 to become inoperative.

In addition to the limit stops above enumerated and described, means is provided for causing all of the motive means, particularly those for moving the carriages vertically and horizontally, to become inoperative. his is highly desirable in order that after the photographic plate and sensitized surfaze are brought into proper printing relation the motive means cannot move these elements, particularly the photographic plate, and thereby spoil them. This is prevented in the following manner. A shaft 135 (Figs. 1

and 2) is mounted on the carriage member 10 and when rotated operates a single throw electrical switch 133 in the electrical circuit of ea -h of the motors 48, 80, and 98 (Figs. 2 and 14). Slidably keyed on shaft 135 is a trip finger 136 positioned adjacent the holder 32' and movable therewith and adapted to slide along shaft 135 when the holder is moved along the carriage. \Vhen lever 27 (Figs. 1, 2 and 14) is operated to move the holder in a direction normal to its movement along the carriage the holder moves this finger thereby rotating shaft 135 and lever 136' ke 'ed thereon; and after the holder has moved a predetermined distance, or into proper printing position the switch 133" is operated by lever 136' to cause all. of the motors to become inoperative. In all of the switches, i. e., 131, 133, 133, and 133", they are so constructed that as the trip which operates each is moved back from such operating position the switch is again closed so that the electrical circuit in which it is placed is closed, so far as this particular switch is concerned.

Referring to Figs. 1 and 2 suitably graduated sales 137 ad 137 are attached respcctively to the horizontal carriage member 11 and the vertical carriage menner 9, and cooperating vcrnier scales 138 and 138' are attached respectively to the sulrcarriage member 16 and the supporting frame support 6. These scales and verniers provide means for accurately determining the relative position of these movable parts with respect to their respective guideways.

The vertically movable carria e is provided with counter balance weig its such as 139-139 attached to the carriage by means of cables 1401l0' passing over pulleys 1411-ll' and 142-142.

The sensitized surface to be printed upon is placed on the base plate as set forth above, either while the base plate is in horizontal position on its supports or before it is placed upon its supports. The photographic plate is placed on its frame, such for example as the vacuum frame shown in Figs. 7 and 8, and the frame is then mounted on the holder 32 by means of the dowel pins 122.

The sensitized surface is now swung up to its proper position in the following manner. The motor 98 is started and through means of the driving gears, above enumerated the worm 9O drives the segment rack 87 and the lug 88 abutting the lug 89 swings the base plate 101 about its pivot shaft 85 'until the trip arm 134 carried on the lower end of segment 87 operates switch 133' to cut out the motor 98. The handles 118 are then pushed outwardly to bring the cams 115 behind the 2 bars 120 and the handles are pulled down to draw the base plate toward the upright members 5 and 6, the adjustable stops 113 abuttin against the uprights. The sensitized sur ace is now in proper position to be printed upon.

The vertically movable carriage, is now moved to its proper position to bring the photographic plate into its approximately correct vertical position as herembefore described. If the negative is found to be twisted out of its proper position with re spect to the holder this may be remedied by means of the adjustment controlled by the handle 41 and associated parts, as hereinbefore described.

The horizontally movable carriage carrying the holder and photographic plate is now moved along the main carriage, either by motive means such as the motor 48, which operates the lead screw 20 to drive the carriage as described, or manually through the counting head handle 68 which operates the lead screw, or by rotating shaft 55 which is cared to the lead screw. The rotation of his shaft may be accomplished by turning the hand wheel 61 or if a finer adjustment is desired the Vernier adjustment may be brought into operation by moving t e handle 67 to bring the worm and worm wheel and 64 into' mesh and then turning the hand wheel 66.

When operating manually the motor 48 may be disconnected b simply lifting the latch (Fig. 6) 50 and sliding out the-gear 46. The manual oieration by means of the handle 68 on the counting head is usually used in cooperation with the motive means to move the holder the last increment of distance as described in my said application Serial #694,194, while the hand wheels 61 are usually used when the whole movement along the carriage is to be manually performed. The carriage has now been moved into the correct position horizontally and vertically in a plane parallel to the sensitized surface and it now remains only to move the photographic plate in a direction normal to this plane to bring the photographic plate into printing contact with the sensitized surface. To do this the lever .27 (Figs. 1 and 2 is pushed forward thereby forcing the hol er, vacuum frame and photographic plate carried thereby toward tie sensitized surface a predetermined distance, preferably 7 holder 32"tofrota'te shaft. 135 .which trips.

the switch 133" which cuts out the three motor circuits for motors 48, 80 and" 98 (Fig.

v plunger and is carried within the spindle,

14) thereby causing these motors to become inperati\e until the vacuum frame is moved away, by pulling lever' 27 back to its ogiposite sition. Now the vacuum connecte to an outlet 130 is operated and the photographic plate and vacuum frame 121 are pulled toward the sensitized surface, the flexible .seal 129 being further compressed and the forward motion being permitted by the dowel pins sliding in the dowel holes. Due tothe mounting of the photogra hic plate on the celluloid sheet 127 it mayv to the frame, against the sensitized surface, this motion being permitted by the flexible strip 126. All of the motor circuits having been cut out it is impossible to accidentallythrow any of the motor switches-to. move the photographic plate by motive means, while in this position of proper registration. The

out out switch l33 acts as a master safety switch as will be well-understood by those skilled in the art.

To prevent the carria e from being driven too far up on the mem ers and 6 by the motive means through accident or carelesss ness, a switch 131 o erated by trip levers 132 and 132 attache respectively to members and 11 cuts off the motor 80 when the carriage has reached its safe lowermost or uppermost position respectively. Similarly, to, prevent the plate carriage and holder from being carried too far horizontally in either direction by the motive means being inadvertently turned on or left on, an electrical switch is mounted on each end of member 10 and a trip arm134 so situated on the carriage frame that as the carriage approaches its safe limit of travel the circuit of its driving motor is cut out thus causing the motive means to become inoperative.

A similar arrangement is provided on the uadrant rack 87 and associated drivefso t at the danger of driving the base plate too far in either direction is eliminated.

Instead of the dials represented in Figs. 1 and 2 as 44 and 44' a sim ler dial shown in Fig. 11 ma be used and its use will be described wit reference to Figs. 1, 2, 11, 12,

ported by the knurl moved relative means with they exce fixed dial 143. The handle 145 is rovided with a sleeve portion 148 provid with a spiral slot 149 witha. transversely slotted stop portion 149' at the top end thereof. The sleeve 148 fits. over ahollow spindle 150 projecting. from the crank arm v144and is ield thereon by means of -a pin 151 fixed in. thespindle and engaging a. slot 151' in the sleeve. The' .pluger pin 146 is su head 145-and t e ushing 152. -A spring 153. surrounds the normally forcing the plunger outwardly as indicated. A pm 154 projecting from the plunger 146 extends through the spiral slot 149 so that when it is desired to-make the plunger inoperative the knurled handle may be rotated until. the pin 154m in the stop. 149'. in which sition the plunger will not en age the dia 143.

The cran arm 144 is keyed. to the lead screw 20in such relative sition that when the pin 146 is opposite t e slot 147 in dial 143 the holder 32 will at that time be at an even unit of setting with regard to the scale 137 (see Fig. 1). In this arrangement a push switch such as 155 (Fig. 11) is attached to the circuit of motor 48 (Fig. 14). To operate the carriage the handle 145 is set so that the plunger 146 is inoperative. The motor 48 is started. and the vernier 138 (Fi 1) is observed in relation with the sea e 137. When the holder32 has moved to within a distance of the desired setting less than one com lete turn of the crank arm 144 will p uce, the switch 155 is manually opened, thus cuttin out the motor 48, as will be more fully escribed following; the knurled head 145 is thenturned to bring the plunger 146 into operative position; and the crank arm 144 is then rotated until the plunger 146 is spring pressed into the slot 147 by spring .153. At this time the desired setting of the holder has been completed. For further settings, the knurled handle must be turned to withdraw the plunger and release the lead-screw 20 for rotation. By this simple means it is possible with careful operation toset the holder with precision; the setting being done by motive ionof a fraction of one turn of thelea screw. The plunger ma be left inoperative, as a stop means, if esired and the handle stopped manually when the index mark, such as the slot 147, has been, reached by the plunger point.

A similar dialand associated arts may be used in connection with the vertical movement of the carriage; whereby the rotation of the jack screws will be controlled in a similar manner to the way in which the lead screw 20 is controlled. The dial 143 for this movement is mounted on a stationary part such as upright 6 similar to the manner in which the dial 4 1' is mounted (Figs. 1 and 2) and the crank arm 144 is attached to the shaft 83 similarly to the attachment of crank arm 144 to the lead.

screw 20, and a switch 155 is .mounted on upright 6.

The more com licated automatic control dial 44 and 44'- sl i own in Figs. '1 and 2 and described in m 00 endinga plieation Serial #694,194, file Feb. 21, 192 maybeused in conjunction with the motors and cut out switches in a manner similar to the operation described above in connection with the simler dial; all of which will be understood y those skilled in the art after understanding my invention.

Electrical circa/its.

The electrical circuit shown in Fig. 14 is one which will suitably diagramatically represent the various electrical controls formi a part of this invention. The same numera s will be employed in this diagram as have been used throughout the foregoing description for the same respective arts shown in the various views, and addit onal numerals will be used for parts not heretofore designated.

Referring more particularly to Fig. 14; the main electrical ower line is represented as 156 and a switc 157 controls the total electrical ener for the various motors 48, 80, and 98 and 1n series with each respective motor are magnetic no voltage switches 158, 158' and 158". In series with each motor respectively are also relay switches 159, 159', and 159 These relay switches are arranged to be held closed by means of energy furnished by an auxiliary circuit; preferably of 10 volts and supplied as by a storage battery 160, or any other suitable means. \Vhen'the energizin circuit of these relays is broken the switc 188 are opened by'springs 161, 161' and 161 respectively. It Will therefore be seen that if the energizing circuit of either of these relays is broken that relay switch will open the circuit of its motor circuit in which it is laced, and this will open the magnetic switci 158, 158' or 158" in that circuit so that the circuit will be held open until the relay is closed and the magnetic no voltage switch is closed.

Summarizing the manner in which, and the means by which these relay circuits are broken to operate the various relay switches; referring to Figs. 14, 1 and 2, switch 159 may be opened by the operation of switches 133, or 133 carried on carriage member 10 and controlled by the trip 134, carried by holder 32; or by switch 155 carried by the carriage member 11 and adapted to be manually operated. These switches control the motor for imparting horizontal movement to the holder.

The relay switch 159 may be opened by the operation of switch 131 carried on the movable carria e member 9 and controlled by trips 132 an 132' carried by the stationary upright 6, or by switch 155 carried by the upright 6 and adapted to be manually operated. These switches control the motor for imparting vertical movement to the holder.

The relay switch 159 may be opened by the switch 133 mounted on the stationary pedestal 91 and controlled by thetwo trips 134 and 134 carried by the movable quadrant 87. This switch controls the motor for raising or lowering the base plate 101.

All of the relay switches, 159, 159' and 159" may be opened by means of the switch 133 mounted on the carriage member 9 and operated by the trip lever 136 carried on the end of shaft 135 which is adapted to be rotated by trip finger 136 engaged by the holder 32.

Having thus described by invention with particularity with reference to the preferred method of carrying out the same and in connection with the preferred apparatus for carrying out the same, and having referred to same of the possible modifications thereof, it will be obvious to those skilled in the art, after understanding my invention, that various other changes and modifications may be made therein without departing from the spirit and scope of my invention, and I aim in the appended claims to cover such changes and modifications as are within the spirit and scope of my invention.

hat I claim as new, and desire to secure by Letters Patent, is:

1. In a machine of the character described the combination of .1 substantially vertically movable carriage, a base plate for supporting a sensitized surface and adapted to be moved to a substantially vertical position parallel to and near said carriage, a vacuum frame for supporting a photographic plate to be printed from onto the sensitized surface, a holder for said vacuum frame, mounted on said carriage to move thereon horizontally parallel to the sensitized surface to a suitable printing position, means for moving said holder relative to said carriage toward the sensitized surface to move the photographic late into close proximity to said sensitize surface, and vacuum means cooperating with said vacuum frame for obtaining close contact between the photographic plate and the sensitized surface by moving one tightly against the other while said holder remains stationary.

2. In a machine of the character described the combination of an upright support, a the combination of an upright frame, a versubstantially vertically movable carriage mounted on'said support, a base plate for supporting a sensitized surface and adapted to be moved to a substantially vertical position parallel toand near said carriage, a vacuum frame for supporting a photographic plate to be printed from onto the sensitized surface, a holder for said vacuum frame mounted on said carriage to move thereon horizontally parallel to the sensitized surface to a suitable printing position when said base plate is in the vertical position, means for moving said holder relative to said carriage toward the sensitized surface to move the vacuum frame into contact with said sensitized surface, and vacuum means cooperating with said vacuum frame for obtaining a close contactbetween the photographic plate and the sensitized surface by moving the photographic plate into tight contact with the sensitized surface, while said holder remains stationary.

3. In a machine of the characterdescribed the combination of a substantially vertically for said vacuum frame mounted on said car riage and ada ted to be moved thereon horizontall para lel to the sensitized surface to a suitable printing position, means for moving said holder relative to said carriage toward the sensitized surface to move the photographic plate into close proximity to said sensitized surface, and vacuum means cooperating with said vacuum frame, for obtainin a close contact between the photographic plate and the sensitized surface by moving one into tight contact with the other while said holder remains stationaryj 4. In a device of the character described a sup rt for a sensitized surface, a photographic plate frame for supporting a photographic plate in registration position thereon, a holder for supporting said frame, means for connecting said holder so that said holder and frame may be moved simuL taneously, and then said frame may be moved with respect to said holder in a direction normal to its plane to move the photographic plate into intimate contact with a sensitized surface withoutdisturbing the registration position of the photographic plate on said frame, and vacuum means for effecting said last movement.

5. In a machine of the character described tically movable structure having horizontal uides for a holder, a photographic plate older mounted on said ides for horizontal motion, a first shaft a apted to be rotated to move said holder along the guides, motive means mounted on the vertically movable structure for rotating said first shaft, a second shaft geared to said first shaft and ada ted to be manually rotated to move said hol er, and manually operable means movable with said holder along said guides and adapted to rotate said second shaft to move said holder along said guides.

6. In a machine of the character described the combination of a base, substantially vertical stationary upright members, a vertically movable structure slidably mounted on said uprights, motive means and manually operable means for moving said structure, a holder adapted to support a vacuum frame for a photographic plate mounted on said structure, said holder being movable in a horizontal direction along said structure and also in a plane normal to said horizontal direction, a plate pivotally mounted on said uprights for holding a sensitized surface and adapted to be moved to a substantially vertical position adjacent said holder.

7. In a machine of the character described, the combination of a substantially vertically movable carriage, a holder for a photographic plate adapted to be moved horizontally on and carried by said carriage, motive means mounted on said carriage for moving said holder on said carriage, and means for disconnecting said motive means from said holder.

8. In a machine of the character described the combination of a supporting frame, a photographic plate and a sensitized surface mounted thereon and adapted to be brought into printing position one with respect to the other, motive means for correctly positioning said photographic plate adjacent that part of the sensitized surface to be printed upon, second motive means for moving said photographic plate in a plane normal to said sensitized surface toward and into contact with said sensitized surface, and stop means for automatically causing said second motive means to become inoperative when said photographic plate has been moved to a predetermined position in said normal plane.

9. In a machine of the character described, the combination of a supporting frame, a vertically movable carriage mounted on said frame, motive means for moving said carriage, a horizontally movable holder for holding a photographic plate and mounted on said carriage, motive means for movin said holder, a base plate pivotally mount on said supporting frame for supporting a sensitized surface to be printed onto from said photographic plate, motive means for moving said base plate about said pivot into a printing position, means for moving said holder in a plane normal to the printing position of the sensitized surface. and means for rendering inoperative all of the said motive means when said holder has been moved to a predetermined position in said normal plane.

10. In a machine of the character described the combination of a supporting frame. a photographic plate and a sensitized surface mounted thereon and adapted to be brought into printing position one with the other. motive means adapted to move said photographic plate in a plane parallel-to said sensitized surface to correctly position said photographic plate adjacent that part of the senstiized surface to be printed upon, and limit stop means to cause the motive means to become inoperative to move the photographic plate beyond certain boundaries in a plane parallel to said sensitized surface.

11. Ina machine of the character described the combination of a supporting frame. a photographic Plate and a sensitized surface mounted thereon and adapted to be brought into printin; position one with the other. motive means for correctly positioning said photographic plate ad acent that part of the sensitized surface to be printed upon, limit stop means to cause the motive means to become inoperative to move the photographic plate beyond certain boundaries in a lane parallel to said sensitized surface, and graphic plate in a plane normal to said sensitized surface toward and into contact with said sensitized surface.

12. In a machine of the character described the combination of a supporting frame. a support for a sensitized surface pivotally hinged to said frame and adapted to be moved to a substantially vertical position, a hotographic plate holder horizontally and vertically slidably mounted on said frame in a plane substantially parallel to said sensitized surface when said sensitized surface is in a substantially vertical position. motive means for moving said photographic plate holder in said horizontal and vertical directions, means to move said photographic plate holder in a direction normal to and toward said sensitized surface, and limiting stop control means to automatically render said motive means inoperative when said photographic plate has come into approximate printing position adjacent said sensitized surface.

13. In a machine of the character described, the combination of a supporting frame, a movable carriage mounted on said frame, motive means for movin said carriage, a holder for holding a p otographic late mounted on said carriage movable in a orizontal and vertical direction in a. plane parmeans for moving said photoallel to and also movable in a direction normal to the movement of said carria e, second motive means for moving said ho dot in a. plane normal to the horizontal and vertical directions in which said holder is movable, and stop means for causing the second motive means for moving said photo a bio plate to become inoperative when said liol der has been moved to a predetermined position in said normal plane.

14. In a machine of the character described, the combination of a su porting frame, a movable carriage mounted on said frame, motive means for movin said carriage, a. holder for holding a photo aphic plate mounted on said carriage mova la in a plane parallel to and also in a direction normal to the movement of said carriage, a base plate pivotally mounted on said supporting frame for supporting a sensitized surface to be printed onto from said photogra hic plate, motive means for movin said ase plate about said pivot into a printing position, means for moving said holder in a plane normal to the horizontal and vertical directions in which said holder is movable and stop means for causing all of the said motive means to become inoperative when said holder has been moved to a predetermined position in said normal plane.

15. In a machine of the character described, a supporting frame, a vertically movable carriage mounted on said frame, vertical jack screws for operating said carriage, a first motive means mounted on said frame, a transverse shaft to substantially the midpoint of which said motive means is geared, said shaft also being geared to said jack screws at its extremities to operate said jack screws uniformly. a base plate pivotall mounted on said supporting frame, a secon motive means mounted on said frame for moving said base plate about its pivot, a transverse shaft having said motive means geared thereto at substantially its midpoint and carrying gears at its extremities engaging portions of said base plate mounting, to operate said base plate uniformly.

16. In a machine of the character described, the combination of an upright frame for holding a photographic plate, a pivotally mounted support for av sensitized surface carried by said frame and ada ted to be swung into a position substantia ly arallel to the photographic plate, an adjustable stop on said sensitized surface support, motive means for swinging said support to ap roximately its proper upright position, limit stop means for causing said motive means to bec me inoperative, and cooperating means on said support and frame for forcing said su port into its proper position defined by sald adjustable stop.

17. In a machine of the character described, the combination of a movable plate holder part and a. relatively stationary part, a graduated scale carried by one of said parts and a cooperating index point carried by the other of said parts, a rotatable shaft for moving said movable part, motive means for rotating said shaft, means forcutting out;

said motive means after said shaft has been rotated all but a fractional revolution of the necessary rotation to bring said holder to the desired position, and means operatively related to the control handle to indicate the angular position to which the handle is to be moved to complete the desired movement.

18. In a machine of the character described the combination of a movable plate holder part and a relativel stationary part, a graduated scale carried y one of-said parts and a 000 index point carried b the other o f i parts, a rotatable sha for moving said movable part, motive means for rotating said shaft, means for cutting out said motive means after said shaft has been rotated all but a fractional revolution of the necessary rotation to bring said holder to the desired position, means operatively related to the control handle to indicate the angular position to which the handle is to be moved to complete the desired movement, and means to arrest the movement of the shaft when such position has been reached,

In testimony whereof I have signed my name to this specification.

HARRY C. JONES.

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