US1097770A

US1097770A - Printing-machine.

Info

Publication number: US1097770A
Application number: US62183511A
Authority: US
Inventors: Charles A Root
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-04-18
Filing date: 1911-04-18
Publication date: 1914-05-26
Anticipated expiration: 1931-05-26

Description

C. A. ROOT.

PRINTING MACHINE.

APPLICATION FILED APR. 18, 1911,.

Patented May 26, 1914.

3 SHEETSSHEET 1 1 Fig. IX.Fig.YII. 25 23 attesting-6 .G. A. ROOT.

PRINTING MACHINE.

APPLICATION TILED APR. 18, 1911. 1 ,O97,77Q, Patented May 26, 1914.

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COLUMBIK PLANOGRAPH co..WAsmNGTON, D.

oNrrED STATES, PATENT OFFICE.

CHARLES A. ROOT, 0F SALT LAKE CITY, UTAH.

PRINTING-MACHINE.

To all whom it may concern Be it known that I, CHARLES A. R001,

a citizen of the United States,-residing at Salt Lake City, Utah, have invented certain new and useful Improvements in Printing- Machines, of which the following is a specification.

This invention relates to improvements in printing machines,

The mainobjects of this invention are: First, to provide an improved printing machine which is easily operated. Second, to provide in a printing machine an improved means for automatically timing the exposure. Third, to provide an improved printing machine which is very compact and one in which the parts are readily accessible. Fourth, to provide in a printing machine having a colored lamp, an improved switch therefor which is automatically closed by the opening of the platen. Fifth, to provide in a printing machine, an improved platen.

Further objects, and objects relating to structural details, will definitely appear fro-m the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The structure described constitutes one efiiective embodiment of my invention. Other embodiments would be readily devised by those skilled in the art.

The invention is clearly defined and pointed out in the claims.

A structure constituting an effective and preferred embodiment of the features of my invention is clearly illustrated in the accompanying drawing, forming a part of this specification, in which:

Figure 1 is a detail perspective view of my improved printing machine, the platen being closed. Fig. 2 is a similar view with the platen open. Fig. 3 is a side elevation with the side wall 2 removed, the parts mounted on the side wall being also removed. Fig. 4 is an inside elevation of the wall 2 with the parts mounted thereon, a portion of the casing being partially in vertical section, on a line corresponding to line 4-4 of Fig. 1. Fig. 5 is a detail vertical section taken on a line corresponding to line 55 of Fig. 4. Fig. 6 is a detail horizontal section taken on aline corresponding to line 6-6 of Fig. 4. Fig. 7 is an enlarged detail vertical section taken on a line corresponding to line 7'-7 of Fig, 1,

Specification of Letters Patent.

Application filed April 18, 19 11.

Patented May 26, 1914.

Serial No. 621,835.

showing details of the platen. Fig. 8 is an enlarged detail section taken on a line corresponding-to line 8-8 of Fig. 7. Fig. 9 is a detailvertical section taken on a line corresponding to line 9-9 of Fig. 8. Fig. 10 1s a detail horizontal section taken on a line corresponding to line 1010 of Fig. 4, show lng details of the switch device. 9

In the drawing, similar reference characters refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawing, the box-like casing 1 is preferably provided with a removable side wall 2, the wall 2 being socured as by means of the screws 3. This side 2 is made removable, a portion of the mechanism being mounted thereon so that the mechanism is all readily accessible. The top of the casing is providedwith a printing opening 4, over which I ordinarily arrange a ground glass 5. adapted to support the negative, as 6. The platen is made up of

sections

7, 8 and 9, the rear section 7 being hinged at its rear edge to the casing by means of'the hinges 10, while the rear edge of the intermediate section 8 is hinged to the forward edge of the rear section 7 by means of the hinges 11 disposed at the outer sides of the

holder sections

7 and 8, and the forward section 9 is hinged to the intermediate section 8 by means of the hinges 12 disposed at the in ner sides of the

sections

8 and 9. The

holder sections

8 and 9 are provided with a continuous facing 13. (See Figs'l, 2 and 7). By this arrangement, the forward section 9 may be swung up slightly to permit the inspection of the work and an even pressure on the platen is secured. To secure this pressure, I mount on the forward section 9 a spring 14, the spring being secured at a central point as by the screw 15, while its ends project upwardly. On the forward end of the spring is a latch 16, which is engaged by the spring keeper 17 when the platen is closed. The keeper 17 is preferably arranged in a chamber or cavity 18 provided therefor in the front wall of the casing, and has a button 19 which may be engaged from the outside of the casing. The latch 16 is provided with a retaining loop 20. I also provide a stop 21 arranged through a slot 22 in the latch which limits the upward movement of the latch, the stop This glass is being carried by the holder section 9, (see Figs. 1 and 7.)

The rear end of the spring 14 is connected to a coiled spring 23, which has a rod-like extension 24 arranged between the rear and

intermediate holder sections

7 and 8. (See Fig. 8.) The rear holder section is held under spring tension by means of the spring 25, which is secured to the casing and provided with an extension 26 secured to the forward edge of the section 7. The rear holder section 7 is provided with a clamping bar 27 at its forward edge, which is adapted to engage the rear edge of the negative. (See Fig. 7.) The rear section is raised to permit the insertion of the negative under this clamping bar by means of a finger piece 28 which is provided with a pivot portion 29 disposed in a groove 30 in the top of the casing and with an offset or arm 31 arranged under section 7, so that when the finger piece is swung rearwardly on its pivot portion, the section 7 is raised.

The platen is held in its open position by means of the spring 32, one end of which is connected to the rear holder section 7 and the other to the intermediate section 8. (See Fig. 2.) I provide an angle-shaped guide 33 at one corner and a stop or guide 34 on the same side to assist in the arranging of the negative. My improved platen is effective for the purpose, and, at the same time, is very convenient to manipulate.

I will now describe the switch controlling mechanisms or devices for the colored lamp 35 and the printing lamp 36. The opening of the platen closes the switch for the colored lamp and sets the timing mechanism. The casing is provided with a plug socket 37 which is connected by the wire 38 to the plate 39 having a contact member 40 thereon. A contact member 41 is connected by the wire 42 to the lamp 35. The switch blade 43 coacts with the

switch members

40 and 41 by striking between them in the well-known way. The switch blade 43 is pivoted at 44 on the bracket 45, and is connected by the links 46 and 47 to the lever 48 which is pivoted at 49 to the bracket 50 at the upper end of the casing. The links 46 and 47 are provided with a slip connection, a pin and slot connection being shown, the link 47 being provided with a pin 51 engaging the slot 52 in the link 46. The link 46 is of insulating material and is connected by the pivot 53 to the switch blade 43, while the upper end of the link 47 is connected by the pivot 54 to the lever 48. Pivoted to the platen at 55 is an arm 56, having a pin 57 thereon adapted to engage the lever 48.

When the platen is in its open position. as disclosed in Fig. 3, the switch is closed. When the platen is closed, the switch is opened by means of the spring 58 which is secured to the link 47 and the bottom of the casing. (See Fig. 3.) To secure a prompt or snap opening and closing of the switch, I provide the switch blade 43 with an upwardly-projecting arm 59, arranged over the blade pivot 44. To this arm and to the base of the casing, I connect a spring 60, so that as soon as the switch blade is moved su'fiiciently to swing the arm to either side of the center of the pivot, the spring 60 acts to quickly open or close the switch. The slip connection between the links 46 and 47 permits this movement. The arm 56 is provided with a spring 61, which is coiled about the pivot 55, one end being secured thereto and the other arranged to engage the arm, as shown in Fig. 3.

The switch for the printing lamp 36, in the structure illustrated, consists of the

spring contact members

62 and 63, the member 62 being connected by the wire 64- to the plate 65, which is mounted on the removable wall adapted to engage the plate 68 when the wall is in place. (See Fig. 10.) The switch member 63 is connected by the wire 66 to the binding plate 67 which is also mounted on the removable wall and engages the plate 39 when the wall is in place. The plate 68 is connected by the wire 69 to the lamp 36. The lamp is connected to the socket 37 by the wire 70. The switch members are held in engagement by the catch 71, which is mounted on the pivot 72. An angled lever 73, pivoted at 74, is connected to the catch by a slip connection so that by the adjustment of the lever, the swinging end of the catch is raised or lowered. One arm of the lever is arranged through the casing to engage the toothed plate 75. The catch 71 projects into the path of the dashpot cylinder 7 6, which is mounted upon the tubular piston rod 77. This hollow or tubular piston rod opens through the piston 78 so that as the cylinder moves down on its iii-stroke, the air escapes through the port 7 9 at the lower end of the rod. 5-.) This port is controlled by the valve 80, by the adjustment of which the escape of the air is controlled.

The dash-pot is provided with a member 81 adapted to engage the catch 71. (See Figs. 4 and 5.) By the adjustment of the lever 73, the catch is raised or lowered, as stated, 50 that it is engaged sooner or later in the movement of the dash-pot. The catch is held yieldingly in its engaging position by means of the spring 82. The connection for the lever and catch in the struc ture illustrated consists of a pin 83 on the lever which engages the slot 84 in the catch. The catch 71 is provided with a pivot-engaging slot 7 2, which permits its being lifted to release the contact or switch members when engaged by the dash-pot cylinder and also to permit the engagement of the switch members. The dash-pot is actuated (See Fig.

by a spring 85, one end of which is connected to the rib 86 on the removable side wall, the other to the pivoted arm 87 which is pivoted. at 88 on the rib 86. The other end of the arm 87 is connected to the swinging end of the link 89 by means of the pivot 90. This link 89 is pivoted at 91 to the dash-pot cylinder.

The link 56 is provided with an off-set 92, which is adapted to engage the arm 87 when the platen is open to elevate the dashpot cylinder. The dash-pot is held in its raised position against the tension of the spring 85 by means of the spring catch 93, which engages the pin 94; on the arm 87. This catch is released by the lever 95, which is pivoted at 96 and provided with a fingerpiece 97 arranged through the slot 98 in the top of the casing; The lever is connected by the link 99 to the catch, the link being provided with a slot 100 which engages the pin 101 on the trip. This connection allows the catch 93 to engage without actuating the trip. The lower end of this lever is adapted to engage the switch member 63 for shifting it into engagement with the retaining catch 71, so that when the lever is actuated, the switch for the printing lamp is closed, and, at the same time,'the dashpot cylinder released, which, at the expiration of a desired period, opens the switch, thus cutting off the printing lamp. The piston rod 77 of the dash-pot is supported on a bracket 102 mounted 011 the rib .103 carried by the removable side wall. For supporting the cylinder when the parts are assembled I provide a guide-way 104 with which the slotted block 105 on the cylinder engages when the parts are assembled, the

guide way being mounted within the casing. (See Figs. 4 and 6.) p

I have illustrated and described my improvements in detail in the form in which I have embodied them in practice. I am aware, however, that they are capable of very great structural modifications without departing from my invention, but as such structural modifications or variations will no doubt be obvious to those skilled in the art to which this invention relates, I have not attempted to illustrate or describe the same herein.

In the operation of the device, the opening of the platen closes the switch for the colored lamp and sets the timing mechanism, namely, the dash-pot, the connection for the switch 43 to the platen being through the link 50, the levers 4:8 and the links 46 and 4L7. The dash-pot connection to the platen is through the link 56, which acts on the lever 87 and is, in turn, connected to the dash-pot by the link 89, so that the dash-pot is raised against the tension of the spring 85 when the platen is opened. The catch 93 retains the dash-pot in its open leased by the movable member of the dash- 1 pot. The timing of the printing operation is controlled by the adjustment of the catch by means of the lever 73, which adjusts the catch so that it is engaged earlier or later in the stroke of the movable dash-pot member. The catch 71 being released, the switch of the printing lamp opens and the cycle of operation is complete.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a structure of the class described, the combination with the platen and dashpot, of means for actuating said dash-pot comprising a pivoted lever, a link connecting said lever to said dash-pot, an actuating spring for said dash-pot connected to said lever; a link on said platen for actuating said lever against the tension of said spring when said platen is opened; a catch for said lever; switch members; a catch for retaining said switch members in their closed position and arranged to be disengaged by the movable member of said dash-pot, said catch being provided with a longitudinal and a transverse slot; a spring for said catch; a stop pin for said catch engaging said transverse slot thereof; a lever for adjusting said catch having a pin arranged in said longitudinal slot thereof whereby the catch may be adjusted to be acted upon earlier or later in the stroke of the movable member of said dash-pot; a pivoted switch closing member having a pin thereon; and a connecting link for said dash-pot actuating lever catch and said switch closing member, said link being longitudinally slotted to engage the pin on said switch closing member. 2. In a structure of the class described, the combination with the platen and dashpot, of means for actuating said dash-pot comprising a pivoted lever, a link connecting said lever to said dashpot, an actuating spring for said dash-pot connected to said lever; a link'on said platen for actuating said lever against the tension of said spring when said plate holder is opened; a catch for said lever; switch members; a catch for retaining said switch members in their closed position arranged to be disengaged by the movable member of said dash-pot, said catch being provided with a transverse and a longitudinal slot; a spring for said catch; a stop pin for said catch engaging said transverse slot thereof; and a lever for adjusting said catch having a pin arranged in the longitudinal slot of said catch where-' by the catch may be adjusted to be acted upon earlier or later in the stroke of the movable member of said dash-pot.

3. In a structure of the class described, the combination with the platen and dashpot, of switch members; a catch for retain ing said switch members in their closed position arranged to be disengaged by the movable member of said dash-pot, said lever being provided with a longitudinal and a transverse slot; a spring for said catch; a stop pin engaging said transverse slot thereof; and a lever for adjusting said catch having a pin arranged in the longitudinal slot of said catch whereby the catch may be adjusted to be engaged earlier or later in the stroke of the movable member of said dash-pot.

l. In a structure of the class described, the combination with the platen and dashpot, of means for actuating said dash-pot comprising a pivoted lever, a link connecting said lever to said dash-pot, an actuating spring for said dash-pot connected to said lever, a link on said platen for actuating said lever against the tension of said spring when said platen is opened, a catch for said lever, switch members, and a catch for retaining said switch members in their closed position.

5. In a structure of the class described, the combination with the platen and dashpot, of means for actuating said dash-pot comprising a pivoted lever, connections for said lever and said dash-pot, an actuating spring for said dash-pot connected to said lever, connections for said platen to said lever for actuating said lever against the tension of said spring when said platen is opened, a catch for said lever, switch members, a catch for retaining said switch members in their closed position adapted to be disengaged by the movable member of said dash-pot, means for adjusting said catch so that it is acted upon earlier or later in the stroke of the movable member of said dash-pot, a switch closing member, and connections for said dash-pot actuating lever catch and said switch closing member.

6. In a structure of the class described, the combination with the platen and dashpot, of means for actuating said dash-pot comprising a pivoted lever, connections for said lever and dash-pot, said platen being provided with means for actuating said lever, an actuating spring for said dash-pot connected to said lever, a catch for said lever, switch members, a catch for retaining said switch members in their closed position adapted to be disengaged by the movable member of said dash-pot, means for adjusting said catch so that it is acted upon ear lier or later in the stroke of the movable member of said dash-pot, a switch closing member, and connections for said dash-p0t actuating lever catch and said switch closing member.

7. In a structure of the class described, the combination with the platen and dash-pot, of means for actuating said dash-pot comprising a pivoted lever, connections for said lever and said dash-pot, an actuating spring for said dash-pot connected to said lever, connections for said platen and said lever for actuating said lever against the tension of said spring when said platen is opened, a catch for said lever, switch members, a catch for retaining said switch members in their closed position adapted to be disengaged by the movable member of said dash pot, and means for adjusting said catch so that it is acted upon earlier or later in the stroke of the movable member of said clashpot.

8. In a structure of the class described, the combination with the platen and dashpot, of means for actuating said dash-pot comprising a pivoted lever, connections for said lever and said dash-pot, an actuating spring for said dash-pot suitably connected thereto, connections for said lever and platen whereby said lever is set by the opening of the platen, a catch for said lever, switch members, a catch for retaining said switch members in their closed positions adapted to be disengaged by the movable member of said dash-pot, and means for adjusting said catch so that it is acted upon earlier or later in the stroke of the movable member of said dash-pot.

9. In a structure of the class described, the combination with the platen and dashpot, of connections whereby said dash-pot is set by the opening of said platen, switch members, a catch for retaining said switch members in their closed position adapted to be disengaged by the movable member of said dash-pot, means for adjusting said catch so that it is acted upon earlier or later in the stroke of the movable member of said dash-pot, a switch closing member, and connections for said dash-pot actuating lever catch to said switch closing member.

10. In a structure of the class described, the combination with the platen and clashpot, of connections whereby said dash-pot is set by the opening of said platen, switch members, a catch for retaining said switch members in their closed position arranged in the path of the movable member of the dash-pot adapted to be disengaged by said movable member, and means for adjusting said catch so that it is acted upon earlier or later in the stroke of the movable member of said dash-pot.

11. In a structure of the class described, the combination with the platen and dashpot, of means for actuating said dash-pot comprising a pivoted lever connected to said dash-pot, an actuating spring for said dashpot connected to said lever, connections for said platen to said lever for actuating said lever against the tension of said spring when said platen is opened, a catch for said lever, switch members, a catch for retaining said switch members in their closed position adapted to be disengaged by the movable member of said dash-pot, a switch closing member operatable to close the switch independently of the closing of the platen, and connections for said dash-pot actuating lever catch and said switch closing member, whereby said dash-pot is released upon the closing of the switch.

12. In a structure of the class described, the combination with the platen and dashpot, of means for actuating said dash-pot comprising a pivoted lever actuated by said platen connected to said dash-pot, an actuating spring for said dash-pot, a catch for said lever, switch members, a catch for retaining said switch members in their closed position adapted to be disengaged by the movable member of said dash-pot, a switch closing member operatable to close the switch independently of the closing of the platen, and connections for said dashpot actuating lever catch to said switch closing member.

13. In a structure of the class described, the combination with the platen and dashpot, of means for actuating said dash-pot comprising a pivoted lever actuated by said platen connected to said dash-pot, an actuating spring for said dash-pot, a catch for said lever, switch members, means for closing said switch members operatable independently of the closing of the platen, and a catch for retaining said switch members in their closed position adapted to be disengaged by the movable member of said dash-pot.

14:. In a structure of the class described, the combination with the platen and dashpot, of operating connections for said platen to said dash-pot, switch members, means for closing said switch members operatable independently of the closing of the platen, and a catch for retaining said switch members in their closed position adapted to be disengaged by the movable member of said dashpot.

In witness whereof, I have hereunto set my hand and seal in the presence of two witnesses.

CHARLES A. ROOT. [11. s.]

Witnesses:

A. W. MILLGATE, OHAs. L. ARCHER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.