US1817211A - Automatic feeding device - Google Patents

Description

g 1931- L. J. SAUER 1,817,211

AUTOMATIC FEEDING DEVICE Filed Jan. 13, 1930 3 Sh eets-Sheet. l

Aug. 4, 1931. L. J. sAuER 1,817,211

- AUTOMATIC FEEDING DEVICE Filed Jan. 13. 1930 a Sheets-Sheet. 2

Aug. 4, 1931. L. J. SAUER ,2

AUTOMATIC FEEDI NG DEVICE Filed Jan. 13. 1350- 3 Sheets-Sheet, 3

Patented Aug. 4, 1931 UNETED STATES PATENT OFFHCE I LOUIS J. SAUER, OF OAK PARK, ILLINOIS, ASSIGNOR TO CHAR-LES H. JOY, S11, OF

CHICAGO, ILLINOIS AUTOMATIC FEEDING DEVICE Application filed January 13, 1930.

My invention relates to automatic feeding devices for duplicating machines with especial reference to that class of machines provided with a flat gelatinized printing surface 5 over which a carriage having a suitable platen roller is arranged to travel.

My invention is particularly adapted for use in connection with machines similar to that shown and described in my copending application, Serial Number 349,87 6, in which the paper or suitable card is inserted in the carriage and the platen roller impresses the original or the copy sheet on the gelatinized printing surface which receives the impression from the original sheet and transfers it to the copy sheet.

In positioning the original or copy sheets on the gelatinized surface, it is necessary to provide a suitable margin stop bar in order 26 that the paper may be accurately aligned with relation to the platen roller and the printing surface.

In my invention I have provided a convenient means for accomplishing the desired results and it has for one of its objects the provision of an automatically controlled margin bar and paper feeding device, the operation of which is automatically controlled relative to the directional movement of the carriage.

Another object is to provide an automatic paper feed device controlled by the lost motion of the handle operating the carriage.

Another object is the provision of an automatic paper feeding device controlled by the operator through the normal movement of the carriage handle.

A further object is the provision of an automatically controlled paper guide to guide the paper into printing position on the print ing bed during the printing movement of the carriage, and to automatically guide the paper from the printing bed during the reverse movement.

Another object is to provide a completely automatic margin bar, paper feed and paper guide, all incorporated in the carriage of a duplicating machine and automatically operable by the single means operating the carriage.

Further objects will appear from the de- Serial No. 420,340.

tailed description to follow and from the appended claims.

In the drawings:

Figure l is a side elevation of the carriage and cooperating parts of a duplicating machine embodying my invention, the platen driving spool and a portion of the carriage being broken away to more clearly illustrate the device.

Fig. 2 is a plan view with the handle broken away on a line corresponding to line 22 of Fig. 1.

Fig. 3 is a perspective view of the margin bar or paper stop and the. paper feed device, the driving means and a portion of the margin bar being broken away to better illustrate the invention.

Fig. & is a side view of the feeding device as shown in Fig. 3, but in the horizontal position.

Fig. 5 is a side view of the paper feed device, the feed roller bearing being removed.

Fig. 6 is a perspective view of one end of the margin bar or paper stop.

Referring now to the drawings in detail, the construction shown comprises a printing bed 1 having a gelatinized printing surface 9. thereon, and a guide bar 3, supported adjacent the printing bed on which is slidably mounted the carriage 2 which is arranged to be raised from the bed surface by rotation on the shaft 3.

The carriage, in the present device, is preferably in the form of a substantially rectangular frame work in which is mounted the removable platen roller in suitable bearings 6 and 7. The bearing 6 comprises the stub shaft 8 on which is mounted the driving spool 9 for driving the platen roller. (See Fig. 2.) This roller is similar to that in my co-pending application above mentioned, the platen roller being rotated in the usual manner by means of a single turn of the cable 10 which engages the flanged spool 9. The squared .portion 11 of the platen roller shaft engages in a suitable opening in the stub shaft 8 for supporting and driving the platen roller. The opposite end of the roller is engaged by the tapered pin 12 which is held in engagement by means of the spring 18. The

platen roller is easily removable by pulling the frame and provided with a lost motion movement, so that when the carriage is moved to the right, as viewed in Fig. 1, the handle takes the position shown in full lines and when it is moved to the left, takes the position shown by the dotted lines, thus giving a lost motion movement of the handle for each directional movement of the carriage.

The paper table is provided with the ears 17 forming suitable bearings for the margin bar control shaft 18 on which is loosely mounted the margin bar 19 by means of suitable ears 20. A paper feed roller 21 is rotatably mounted in suitable hearings in the movable bearing members 22 which are pivoted by means of the screws 23to the paper, table ears 17. Springs 24 engage the bearing members 22 tending to hold the feed roller 21 in the feeding position indicated in Figs. 1 and 3 in which it is snugly pressed against the pressure roller 25 which is mounted in suitable bearings 26 secured to the paper table. I

The feed roller 21 is driven from the platen roller by means of the pinion 27, the idler gear 28, and the gear 29 on the platen roller stub shaft 8. The idler gear 28 is held in operative relation to the pinion 27 and the gear 29 by means of the link 30-pivoted on the shaft 31 of the feed roller, the idlor r28 being supported on the link by means of a suitable bearing 32 and held in operative relation to the gear 29 by means of the pin 33 in the carriage 4 and the slot 34 in the link. The slot 34 allows free movement of the feed 1 roller 21 without disturbing the operative relation of the gears.

The paper stop and feed roller are automatlcally controlled by means of the lever 35 whichis secured to the paper stop control shaft 18 and connected to the handle 15 by means of the link 36.

It is obvious that when the handle is moved to push the carriage to the right, the shaft 18 will be rotated clockwise as viewed in Fig. 1 and when the handle is moved to reverse the direction of the movement of the carriage this shaft 18 will be rotated counter clockwise.

The shaft 18 is provided with the pins 37 for engaging the margin bar 19 to hold it in the raised position shown in Figs. 1 and 3, and the pins 38 are arranged to engage against the shoulders 39 of the bearing members 22 to raise the feed roller 21 against the tension of the spring 24 when the handle is moved to the dotted line position. In operating the device when the handle is pulled forward to the dotted line position the shaft 18 will be rotated to release the margin bar 1.9 which will then be lowered by its own weight until the ears 4O engage the bearing members 26 where it is in a position to engage any paper which may be inserted between the rollers 21 and 25. At the same time the roller 21 will be raised to allow the inserting of the paper, the parts then taking the position shown in Figs. 4 and 5. In this position, the paper is inserted between the rollers and against the margin bar and upon the reverse movement of the carriage the paper will be engaged between the feed roller 21 and the pressure roller 25 and released by the margin bar and allowed to feed beneath the carriage platen roller-. r 7 Y In order to guide the paper under the platen roller, the curved guide 41 is pivoted on the frame 42 and extends parallel with the roller. -The lever 35 is provided with the arm 43 which engages the lever 44 pivoted at 45 and which in turn engages the guide 41. It is evident that when the device is in the paper feeding position, the guide 41 will be in the position shown in Fig. 1 and when the handle 15 is moved to the dotted line position. to reverse the direction of-the motion of the carriage, the guide 41 will be raised to the position shown by dotted lines in Fig. 1 and the paper will be removed from the printing bed and guided to an easily accessible position betweenthe margin bar and the platen roller where it may be removed from the machine.

It is obvious that various changes may be made in the details of the construction shown, without departing from the spirit of the invention. 3

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

1. In a duplicating machine, a carriage mounted to travel back and forth over a printing bed. a platen roller,'a paper table on said carriage, means above the table for controlling the movement of the paper from the table to the platen roller a movable paper guide for guiding the paper from the paper table and under the platen roller when the carriage is moved in one'direction, and automaticmeans controlling said guide through the normal operation of'the carriage to guide the paper away from the papertable and above said controlling means when the direction of movement of the carriage is reversed.

2. In a duplicating machine having a carriage mounted to travel back and forth over a printing bed, an operating handle; on said carriage and having a limited lost motion in :the direction of movement of said carriage, a

paper table on said carriage a platen roller on said carriage for cooperation with said printing bed, means above said table and connected with said handle for automatically delivering paper to said printing bed when the carriage is moved in one direction, and means automatically adjustable by the operation of said carriage to guide the paper away from said printing bed and above said delivering means when the carriage is moved in the opposite direction.

3. A duplicating machine comprising a carriage mounted to be moved back and forth over a printing bed, an operating handle for said carriage having a limited lost mot-ion relative thereto, a paper table on said carriage, a platen roller for applying the paper to the printing bed, a pair of separable feed rollers adjacent the lower edge of said table for feeding the paper to the platen roller, means for holding said rollers normally in effective paper engaging position, and means operable by said handle for separating said rollers to ineffective position, said positions corresponding respectively to the back and forth movement of said carriage.

4. A duplicating machine comprising a carriage mounted to travel over a printing bed and having a platen roller cooperative with said bed, a paper table on said carriage, feed rollers adjacent said paper table, a cover for said feed rollers comprising a movable paper stop, and automatically operable means for making said stop and said feed rollers alternately effective relative to the direction of movement of said carriage.

5. In a duplicating machine, a carriage mounted to travel over a printing bed and having a platen roller cooperative with said bed, a paper table on said carriage, a paper feeding device associated with said paper table comprising a feed roller, means for driving the feed roller from the platen roller, tensioned means normally holding said feed roller in effective position, means comprising a carriage handle having a limited lost means for holding the sheet on the support movable to releasing position to permit the sheet to pass underneath the roller, and means for feeding the sheet to the platen roller when the retaining means are moved to releasing position, comprising a feed roller engaging the sheet, said retaining means extending along and above the feed roller and serving to house it.

7. In a duplicating machine, a carriage mounted to travel over a printing surface, a platen roller mounted on said carriage for pressing the sheet on the printing surface, a support on which the sheets rest prior to passing underneath the roller, retaining means for holding the sheet on the support movable to releasing position to permit the sheet to pass underneath the roller, and means for feeding the sheet to the platen roller when the retaining means are moved to releasing position, comprising a feed roller engaging the sheet, said retaining means extending along and above the feed roller and serving to house it, and said feed roller being movable into and out of engagement with respect to the sheet.

8. In a duplicating machine, a carriage mounted to travel over a printing surface, a platen roller mounted on said carriage for pressing the sheet on the printing surface, a support on which the sheets rest prior to passing underneath the roller, retaining means for holding the sheet on the support movable to releasing position to permit the sheet to pass underneath the roller, and means for feeding the sheet to the platen roller When the retaining means are moved to releasing position, comprising a feed roller engaging the sheet, said retaining means extending along and above the feed roller and serving to house it, and said feed roller being movable into and out of engagement with respect to the sheet, and a handle for moving the carriage and controlling the movement of the feed roller with respect to the sheet.

9. In a duplicating machine, a carriage mounted to travel over a printing surface. a platen roller mounted on said carriage for pressing the sheet on the printing surface, a support on which the sheets rest prior to passing underneath the roller, retaining means for holding the sheet on the support 1 movable to releasing position to permit the sheet to pass underneath the roller, and means for feeding the sheet to the platen roller when the retaining means are moved to releasing position, comprising a feed roller engaging the sheet, said retaining means extending along and above the feed roller and serving to house it, and said feed roller being movable into and out of engagement with respect to the sheet, a handle for moving the carriage and controlling the movement of the feed roller, and retaining means with respect to the sheet.

In witness whereof, I have hereunto subscribed my name.

LOUIS J. SAUER.

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