US1192675A - Printing device. - Google Patents

Description

A. G. OGDEN. PRINTING DEVICE. APPLICATION FILED IULY'I, 191's.

Patented July 25, 1916.

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A. G. OGDEN. PRINTING DEVICE.

APPLICATION FILED IULYI. I9I5- 1 1 92,675. Patented July 25, 1916.

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A5 "3 l 4 I /6 \\\7 4 ATTORNEYS A. G. OGDEN. PRINTING DEVICE. APPuc'Anou FILEU JULY]. 1915.

Patented July 25, 1916.

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' IV V E N T05 (/4736? 6? 05/0272 PRINTING nnvicn.

To all whom it may concern: 1

.Be it known that I, ASHLEY G. OGDEN,

. a citizen of the United States, and a resident of the city of Baltimore, in the State'of Maryland, have invented a certain new and useful Improvement in Printing Devices, of which the following is a specification.

My invention relates toprinting devices for reproducing a-miiltiplicity of prints arranged in' ,sy'mmetrical relation, from a single negative.

. Anobject of my invention is to provide an improved device whereby a multiplicity of prints maybe made on a sensitizedplate in a minimum of time. h a

A further object of my invention is to provide'a device of the type described in which the prints are made in such manner plate or that the designs are accurately spaced in symmetrical relation so that when the designs are etchedand are transferred to a sheet, thelatter may be punched accurately. s i i A further object of my invention is to provide a device of the type described in which the negative is held in a fixed position, while theplate. which is to be printed is shifted with respect to the negative. Where the negative is shifted with respect to the plate, then the source of light which is usually an incandescent light, must be shifted with it and this necessitates the use 'of flexible wires or conductors which are in the way or the provision of special means for. maintaining electrical connection to the source of light during the movement of the latter.-

A further object of the invention is to provide a device of the type described in which the source of light'and the negative are held stationary while novel means are employed for moving the sensitive plate and for clamping the same in its shifted positions.

Other objects and advantages will, appear in the following specificationand the novel features of the invention will be particularly pointed out in the appended claims.

My invention is illustrated in the accompanying drawings forming part of thisapplication, in which- Figure 1 is a plan view of the device. Fig. 2 is a section along the l1ne2'2 of Fig. 1. Fig. 3 is a section along the lme 33 of Fig. 1. Fi 4 is an enlarged plan view of a portion 0 the step by step shift- Specification of Letters Patent.

Ai pHcatio n filed July 1, \1915. Serial No. 37,524.

which passes ASHLEY GUY OGD EN, OF BALTIMORE, MARYLAND.

Patented My 25, 1916.

ing-mechanism. Fig. 5 is a section along the l1ne'5--5 of Fig. 4:. Fig. 6 is a perspectiveview of a portion of the plate holding device. Fig. 7 is a section along the line 7-7 of Fig. 6. Fig. 8 is a section along the line 8-8 of Fig. 6. Fig. 9 is a'perspective view of a portion of the clamping means. Fig. 10 is a view of a portion of a printed plate.- Fig. 11, is a view of a modified form of a portion of the plate shifting mechanism. Fig. 12 is a section through another modified form of the device shown in Fig. 11, and Fig. 13 is a plan view of a modified form ofholding means for the sensitized plate.

In carrying out my. invention I provide,

a suitable bed plate 1 which is preferably made of metal and which is provided with legs 2. Secured to the under side-0f the bed plate is a U-shaped bracket 3 which is provided. with slotted extensions 4 at each end thereof arranged to receive the slotted ends 5 of a cross bar 6, see Fig. 9. The central portion of this -cross bar 6 bears a pair of upstanding'bracket members 7, see -Fig. 3, in which the cylindrical ends 8 of a cam member 9 are journaled. As will be seen from Fig. 2, this .cam member is circular, but the journaled portions 8 .are disposed 01f center. The edge of the cam member 9 is arranged to bear upon a plunger 10 through the body portion of the cross bar 6 and which bears a swiveled head 11 faced with some resilient material 12 such as rubber or the like. A'handle 13 is provided for manipulating the cam 9. i

It will be seen that on turning the handle in the dirction indicated by the curved arrow in Fig. 2, the plunger 10 with its resiliently faced head 11 will be forced downwardly against the plate 14. At diagonally opposite corners of the head 11, rods 15 pass through the plate 6 and are connected to the head, springs 16 being provided above the plate, these springs exerting tension on the rod 15, so as to cause the plate 11 to be lifted when the handle 13 is thrown over into the dotted line position shown in Fig. 2.

The plate 1 is provided with an opening1 17 see Fig. 2, this opening being bordere by shoulders 18 upon which the transparent negative supporting; plate 19 rests. The

base plate 1 is provided with upwardly extending flanges 20 flanked by grooves 21.

The negative 22 may be adjusted and held set in its adjusted position by means of to a. plate 46 which is slotted to receive guide 13, which pass through the flanges 20 an negative as shown in Fig. 13. The purpose.

of the groove 21 is to provide room for the heads of the set screws so that the latter may be manipulated with the fingers.

The means for holding the sensitive plate 14 is best shown in Fig. 6. In this figure it will be observed that a rod 24 is provided having secured at one end thereof a laterally extending grooved strip 25. A similar strip 26 is adjustably secured to the rod 24 by means of a set screw 27. A cross strip 28 may be secured to both the strips 25 and 26 by means of set screws 29. Openings 30 are provided in the members 25, 26, and 28 so th at these members may be moved to accommodate plates of varying sizes...

The plate 14 is held in the grooved strips 25 and 26 by means of set screws 31, see Fig. 8. It will be observed that the under portion of the strip 25 is provided with a roller bearing 32.

Referring now to Fig. 1, it will be seen that the rod 24 is carried by standards 33, these standards being arranged to permit a slidable movement of the rod 24'relatively to the standards. The standards in turn are carried by a plate 34 which is secured at one end to a rod 35 slidably mounted in the standard 36 carried by the base plate 1. The rod 24 is provided with a handle 37 which is loosely mounted on the rod and is normally kept by the spring 38 against one of the standards 33. A locking member 39 through which the rod 24 passes, prevents the retraction of the rod while permitting its advance when the handle 37 is pushed against the spring 38. The limit of movement of the handle 37 is gaged by the adjustable stop member'40, a scale 41 being provided for determining the exact amount of movement of the arm 37.

The rod 35 is provided with an arm 42 which grips the rod when moved toward the adjustable stop members 43, see Fig. 4. A locking member 44 is provided which prevents the retraction of the rod. As will be seen from Fig. 5 the end of the arm 42 is plvotally connected with a handle 45 secured screws 47. A pin 48 is disposed in the plate 1 and to this pin is attached a spring 49. One end of the spring is attached to the plate 46 so as to retract the. plate when pressure is relieved from the handle 45. A scale 50 is provided, a pointer 51 being carried by the handle 45.

From the foregoing description of the various parts of the device,- the operation thereof will be readily understood. Anegative 22 is made and is placed in position i upon the sensitized plate 19 just above the opening 17. As will be seen from the drawings there is a light housing 52 in which an 7 unclamping the plate.

incandescent light 53 is disposed so that the light shines directly on the plate 19 bearing the negative. The metal plate having a sensitized surface is now placed in the frame which is adjusted in the manner already described to fit the plate, the position of the plate being such that the negative is preferably located adjacent one corner of the plate, as shown in Fig. 1. The handle 13 of the clamping device is now swung to the full line position shown in Fig. 2, thus clamping the plate down upon the negative when an exposure may be made. After the exposure the handle 13 is swung to the dotted line position shown in Fig. 2, thus It will be noted that the plates, or rather the frame which bears the plate, is lifted up by a counterweight W at the end of a flexible cable 10, which passes over a pulley P so that whenever the head 11 of the clamping member is retracted, the sensitized metal plate will be lifted upwardly clear of the negative. The handle 37 is now moved until itcomes into engagement with the stop member 40. This may be repeated for two or three times, each movement moving the plate 14 forward until the desired position is reached, when the negative is again clamped to the plate and an exposure taken. When the end of the rowof exposures is reached, then the handle 45 may be manipulated to bring the plate into position for makinganother row of prints. Obviously it is immaterial whether the prints are made in rows orin columns, the result being the same.

One advantage of this device over those in which the negative and the source of light are shifted, is that the plate may be shifted without any danger of interfering with the electrical connection, since there are no electric wires which are moved. Furthermore, it is easier to shift a flat plate than it is to shift the lamp and the negative and the means for holding the negative, which results in much less time being necessary for the exposure. The provision of the arms 45 and 37 permits the plate to be shifted rapidly to the desired position and this position isgaged to a very small fraction of an inch which is sufficiently accurate for all practical purposes such as the making of metal tags with inscriptions or data upon them. or the making of bottle caps having designs .lVhere it is necessary to secure a higher degree of accuracy in the location of the prints I may use a modified form shown in Fig. 11. In this form, the rod 35 is provided with an arm 60 which has a stationary clamping member 61 and a movable clamping member 62, the latter being manipulated by a set screw 63. A handle 64 is also provided. In this form of the device, the Set screw 63 is tightened against the rod 35 position against another stop member.

While this will result in greater accuracy,

it will at the same time of course entail more labor, but in certain instances the expenditure of labor will pay for the accuracy which is secured. As stated, however, for all ordinary purposes the devices already described is sufiicient. Instead of having the form shown in 'Fig. 11, I may use the form shown in Fig. 12, in which the rod 35 is clamped to the" block 66 by means of a screw 67.

In Fig. 13 I have shown a modified form of means for holding the sensitized plate 14. This consists of a frame 7 0 having set screws 71 bymeans of which the position of the plate 14: may be determined and which will also hold the plate rigidly in position. In order to prevent the heat from the electric lamp 53 frominjuring the negative,

I may provide a fan 72 which forces air directly on the.parts, thus tending to cool the latter. 1

I claim 1. In a device for printing sensitized plates, a stationary source of light, a stationary negative disposed in the field of said source of light, and means for shifting a sensitized plate to different printing positions relative to said stationary negative.

2. Ina device for printing sensitized plates, a stationary source of light, a stationary negative disposed in the field of said source of light, means for shifting a sensitized plate to different printing positions relative to said stationary negative, and means for clamping said plate to said negative in each printing position.

3. In a device for printing sensitized plates, a stationary source of light, a stationary negative holder disposed adjacent to said source of light a negative carried by said stationary negative holder, means for adjustably securing said negative within the holder, asensitized plate being movable with respect to the negative holder, and means for clamping said sensitized plate above said negative in any of the positions of the plate. a I

4. In a device for printing sensitized plates, a stationary source of light, a stationary negative holder disposed adjacent tosaidsource of light, a negative carried" by said stationary negative holder, means for adjustably securing said negative within the holder, a sensitized plate being' movable with respect tothe negativeholder, means for clamping said sensitized plate above saidnegative in any of the positions of the plate, and means for automatically ra ising said plate from the negative when the plate is unclamped.

5. In a device for printing sensitized plates, a stationary source of light, a stationary negative holder disposed adjacent to said source of light, a negative carried by said stationary negative holder, means for adjustably securing said negative within the holder, a sensitized. plate being movable with respect to the negative holder, means for clamping said sensitized plate above said negative in any of the positions of the plate, means for automatically raising said plate from the negative when the plate is unclamped, said means comprising a weight,

a pulley, and a cord connecting said weight at oneend and said plate at the other and arranged to pass over said pulley.

6. In a device for printing sensitized plates, a stationary base having an opening, a stationary source ofdight disposed adjacent to said opening, a stationary transparent plate arranged to cover the opening, a stationary negative carried by said transparent plate, a frame movable relative to said base, a sensitized plate being carried by said frame, and means for clamping said sensitized plate upon said negative.

7 In a device for printing sensitized plates, a stationary base having an opening, a stationary source'of light disposed adjacent to said opening, a stationary transparent plate arranged to cover the opening, a stationary negative carried by said transparent plate, a frame movable relative to said base, a sensitized plate being carried by said frame, and means for clamping said sensitized plate upon said negative, said last named means comprising a cross bar disposed above said base, means for connecting said cross bar with the base, a plunger havmg a head arranged. to engage said sensi tized plate, and means for forcing said plunger' toward the. plate and for looking it' in engagement with the plate.

8. In a device for printing sensitized plates, a stationary base having an opening,

" a stationary source of light disposed adja cent to said opening, a stationary transparplate, and a cam arranged to engage said plunger for moving it toward the plate and for looking it in its shifted position.

9. In a device for prlnting sensitized plates, a stationary solid base having, an opening, a stationary source of light disposed adjacent to said openlng on one side of the transparent plate, a stationary transparent plate arranged to cover the opening, a stationary negative carried by said trans parent plate, means for moving a sensitized plate laterally with respect to the stationary negative, and means for forcing said sensitized plate toward said stationary plate and into engagement with said stationary negative.

10. In a device for printing sensitized plates, a stationary horizontal solid base having an opening, a stationary source of light disposed adjacent to said opening on one side of the transparent plate, a stationary transparentplate arranged to cover the opening, a stationary negative carried by said transparent plate, means for moving a sensitized plate laterally with respect to the stationary negative, and means for forcing said sensitized plate toward sald stationary one side of the transparent plate, a stationary transparent platearranged to cover the opening, a stationary negative carried by said transparent plate, means for moving a sensitized plate laterally with respect to the stationary negative, means disposed above said horizontal stationary base for forcing said sensitized plate downwardly toward said base into engagement with said stationary negative, and for locking the parts in engagement.

' ASHLEY GUY OGDEN. I

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