US1738799A

US1738799A - Sheet-registering device

Info

Publication number: US1738799A
Application number: US225927A
Authority: US
Inventors: Charles F Root
Original assignee: Chandler and Price Co
Current assignee: Chandler and Price Co
Priority date: 1927-10-13
Filing date: 1927-10-13
Publication date: 1929-12-10
Anticipated expiration: 1946-12-10

Description

Dec. 10, 1929. c RQQT 1,738,799

SHEET REGISTERING DEVICE Filed 001',- 15 1927 INVENTORQ Char/e5 J? 3002 A TTORNE Patented Dec. 10, 1929 CHARLES I. ROOT, F CLEVELAND, OHIO, ASSIGNOR TO THE CHANDLER; AND PRICE COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO SHEET-REGISTERING DEVICE Application filed. October 13, 1927. Serial No. 225,927.

The present improvements relate more particularly to devices for registering a sheet of paper on the platen in printing presses of the so-called platen or Gordon type. It will be understood, however, that the invention is not necessarily limited to use in any such particular type of press. Ordinarily two end stops and one side stop are provided on such platen and preliminarily to printing, the sheet requires to be placed with its corresponding edges in contact with these stops in order that it may properly register with the form. Various devices, more or less automatic in character, have heretofore been provided for effecting such register, but the object of the present invention is to provide a device that is not only adapted to shift the sheet, as may be necessary, but also itself act as one of the aforesaid end stops. A further object is to provide an extremely simple and readily adjustable device and one that will not objectionably encumber the platen.

To the accomplishment of the'foregoing and related ends, the invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims, the annexed drawing and the following description setting forth in detailcertain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used. i

In said annexed drawing Fig. 1 is a broken plan view of a platen of a printing press equipped with my present improved sheet registering device; Fig. 2 is a front elevation thereof ,Fig. 3 is anend elevation of the same; Fig. 4 is part vertical section and part end elevation of one port on of the device, the plane of such sectionbeing indicated by the line 4-4, Fig. and Fig. 5 1S a-vertical section of another part, the plane of such section being indicated by the line 5-5, Fig. 1. V o For the purpose of illustration, my improved sheet registering device is shown as applied to the platen 1 of a typical Gordon press. It has been deemed unnecessary to illustrate the manner in which such platen is supported for the oscillatory movement that requires to be imparted thereto order to the gripper bar 2 that is pivotally attached at its respective ends to the lower edge of the platen is actuated, but it will be understood that the bar 2 is oscillated so as to swing the gripper fingers 3 carried thereby downwardly against the face of the platen, their function being to retain the sheet in place during the printing operation. fingers to sheets of various size, they are preferably adjustably mounted on the bar, :being secured in desired location by means of a clamp screw 4:- As indicated above, only a single end stop .5, in addition to the usual side stop 6, requires to be used. Such stops, which are merely diagrammatically shown in Fig. 1, will be variously located, depending upon the size of the sheet and other conditions. Thus, the distance of end stop 5 from the registering device D, of present interest, will depend on the width of the sheet, it being noted that such device D occupies a relative position corresponding with that ordinarily occupied by the second such end stop.

' This device extends upwardly from the lower edge of the platen in parallel relation to the face thereof and is oscillatorily mount: ed at its lower end on a bracket 10 that,as best shown in Fig. 5, comprises two parts adapted to be drawn together by means of a screw 11, such two parts being formed with rabbeted grooves that fit a rail'13 of complementary cross-section attached to the lower To accommodate said edge of the platen. As a matter of fact, such rail 13 will be one of the usual tympan retaining bails with which the platen is ordinarily provided. I 7

- The main element in device D is a triangular shaped piece 12, of sheet metal, the lower corner of which is provided with a slotted extension 12 that is adjustably held by means of a screw 14 in a seat 15 formed in the upper face of a supporting member 16. The latter includes a cylindrical stud 17, rotatably mounted in a suitable bearing therefor provided in bracket 10, being retained in place by means of a pin 18 that extends transversely of said stud (Fig. 2). Said base 16 also includes a laterally projecting arm 19 provided with a downwardly directed pin 20 that is adapted to engage in a slot 21 formed in the head 22 of a pin 23 that is in turn rotatably held in a bracket 24. The latter is slidably adjustably secured in the same slot 25 in the gripper bar 2 as are the gripper fingers 3 and said bracket will be rocked in unison wlth "said fingers. As a result of the swiveled connection between-the bracket and the base 16, provided bythe pins 20 and 22, interconnected in the manner justdescribed, the efiect of oscillation of bar 2 will be at the same time to oscillate said base-together Withthe member 12 ofthe registering device, despite the fact that the latter lies in an angularly related plane. r

'The upper free end of member 12 1s of .ircuate outline, save for a slightly pro ecting finger 30, and is so formed and arranged as to closely contact with the tympan on the platen so thata sheet deliveredonto the latter may-rideover the edge of said member and rest onthe upper surface thereof. A

' flange 31 likewise of arcuate shape, approximately paralleling such upper edge of memlays finger :30 on the lower member, its tip being bent upwardly so as to permit the sheet of paper to be received between the two fingers and there held under regulated pressure determined by the degree of flexure given finger 35." 7

Having thus described the construction v and operation of the various component parts ofthe'device, theoperation thereof as a whole may nowrbe set forth. Assuming the gripperfingers 3 to be in raised positon, as shown in Fig.3, the action of bracket arm 24:

through its connection with the base 16 that carries the registering device'proper will be such as to swing the latter lnto tlIG POSIUOD 'shown in full lines in Fig. 1. 'This is the position in which the device receives the lower edge of the sheet when the latter is i resting on' the stop 5. Upon the bar 2 being 7 delivered to thejplaten, such lower edge also oscillatedto swing the gripper fingers 8 against the platen, device D will besimultaneouslyv swung in a clockwise direction to the position shown in dotted outline in Fig. 1 As av result, the sheet of paper being properly'gripped between the

fingers

30 and 35 will be shifted laterally until its; corre- Jedge of such sheet.

tinctly claim as my invention sponding side is brought against stop 6, following which the adjustment of the fingers slide along the edge of the sheet. The latter meanwhile rests in the trough-like flange 81 which serves to properly locate such edge in final printing position, this location being determined by previous adjustment of member 12 on base 16, as heretofore described. In other words, the member is adjusted so that a radialline from its pivotal axis to the left-hand upper corner or heel will be exactly on a line with the upper edge of stop 5. The remainder of the trough is preferably not strictly arcuate aboutthe same axis, but lies on a curve of gradually decreasing radius, on the order'of 'a spiral. As a result the corner or heel that determines the final position of the sheet vertically of the platen is sure to come into effective contact with the lower Actually the latter may be slightly raised adjacent'the lower righthand corner, the location of such lower edge adjacent the left-hand corner being of course determined byend stop 5. V r

The device D may be readily adjusted longitudinally of bar 2 by simply loosening such screw 11, it being understood that the bracket arm 24 will be simultaneously loosened and moved along to corresponding position. All theparts comprising the device, including the operating connections between said arm 24 and the .base'16, may be readily assembled anddisassembled, while the device occupies a minimum amount of space and, as will be obvious, does away entirely with the necess1ty of any stop in the lower right-handcon ner of the platen. i Other modes of applying theprinciple of my invention may be employedinstead of v the one explained, changebeing made as regards'the mechanism herein disclosed, pro vlded the means stated by any of thefollowing claims or the equivalent of'such stated means be employed. I p

I therefore particularly point out and dis 1. The combinationv with a'platen having anend stop and a sidestop thereon,of a sheet receiving and registering device located intermediatelyof said stops, said device being movable to carry a sheet received thereby towards said side stop and being. itself adapted to serve asa second end stop for such sheet.

2. The combination with a platen having an end stop and a side stop thereon, of a sheet receiving and registering device'located intermediat'ely of said stops, said device being oscillatory to carry a sheet received thereby towards said side'stop and being itself adapted to serve as a second end stop; for such sheet. j I

3. The combination with a platen' having anlend stop and a side stop thereon, of an oscillatory support adjacent the lower edge should be such as to cause them to simply of said platen, and a "sheet receiving and registering member with a sheet-guiding means operating to a uniform line of presentment irrespective of the position of said member, said member being secured to said support so as to be adjustable transversely of its axis of oscillation.

4:. The combination with a platen having an end stop and a side stop thereon, of an oscillatory support adjacent the lower edge of said platen, and a sheet receiving and registering member secured to said support so as to be adjustable transversely of its axis of oscillation, the upper end of said member being formed with sheet-guiding means and provided with sheet-gripping fingers contiguous to the latter.

5. The combination with a platen having an end stop and a side stop thereon, of an oscillatory support adjacent the lower edge of said platen, and a sheet receiving and registering member secured to said support so as to be adjustable transversely of its axis of oscillation, the upper end of said member being formed with an arcuate trough-like guide for the sheet and provided with resilient sheet gripping fingers contiguous to said guide.

6. The combination with a platen having an end stop and a side stop thereon; of a gripper bar oscillatorily attached to the lower edge of said platen; a sheet receiving and registering device located intermediately of said stops, said device being oscillatory in the plane of said platen and being adapted both to carry a sheet received thereby towards said side stop and itself to serve as a second end stop for such sheet; and means operatively connecting said device with said gripper bar.

7 The combination with a platen having an end stop and a side stop thereon; of a gripper bar oscillatorily attached to the lower edge of said platen; a sheet receiving and registering device located intermediately of said stops, said device being oscillatory in the plane of said platen and being adapted both to carry a sheet received thereby towards said side stop and itself to serve as'a second end stop for such sheet; and a swiveled connection between said device and gripper bar whereby oscillation of the latter serves to oscillate the former.

8. A device for registering a sheet on the platen of a printing press com rising an oscillatorily supported member 0 general triangular shape, said member being thus supported adjacent one corner and having a free edge of general arcuate form and a finger projecting therebeyond, a flange parallel with such edge forming a trough-like guide for a sheet of paper, and a second member secured to said first member and having a finger cooperative with such first-named finger.

11. A device for registering a sheet onthe platen of a printing press comprising an oscillatorily supported member of general triangular shape, said member being thus supported adjacent one corner and having a free edge of general arcuate form and a finger projecting therebeyond, a flange parallel with such edge forming a trough-like guide for a sheet of paper, and a second member removably secured to said first member and having a finger cooperative with such first-named fin er.

igned by me this 12th day of October, 1927.

CHARLES F. ROOT.

platen of a printing press comprising an oscillatorily supported member formed with trough-like sheet-guiding means adjacent one edge thereof and provided with sheet-gripping fingers contiguous to said first-named 7 means.

9. A device for registering a sheet on the platen of a printing press comprising an oscillatorily supported member having an arcuate trough-like guide for the sheet and resilient sheet-gripping fingers contiguous toone end of said guide.

10.. A device for registering a sheet on the