US593497A - small - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

G. W. SMALL.

SHEET ADJUSTING DEVICE EOE PRINTING PEEssEs. No. 593,497@ Patented Nov. 9 1897.

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(No Model.) 2 Sheets-Sheet 2.

G. W. SMALL.

SHEET ADJUSTING DEVICE FOR PRINTING PRESSES.

No. 593,497. Patented Nov. 9, 1897.

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UNITED STATES PATENT OFFICE.

GUY W. SMALL, OF BUFFALO LAKE, MINNESOTA, ASSIGNOR'OF ONE-HALF TO JOHN C. RIEBE, OF SAME PLACE.

SHEET-ADJUSTING DEVICE FOR PRlNTl'NG-PRESSESF SPECIFICATION forming part of Letters Patent N 0. 593,497, dated November 9, 1897. Application filed May 11,1897. Serial No. 686,070. (No model.)

To all whom it may concern.-

Be it known that I, GUY W. SMALL, a citi zen of the United States, residing at Buffalo Lake, in the county of Renville and State of Minnesota, have invented a new and useful Attachment for Printing-Presses, of which the following is a specification.

This invention relates to an attachment to a printing-press by means of which the sheet to be printed is automatically moved into the proper position on the tympan of the press to receive the impression from the type.

The object of the invention is to provide a simple and efiicient mechanism for this purpose which will be positive and accurate in its action and which may easily be attached to presses now in use.

The invention will be fully described hereinafter and the novel features thereof pointed out in the claims.

In the drawings, Figure 1 is a plan View of a printing-press with my invention attached thereto. Fig. 2 is a side elevation. Fig. 3 is a perspective view of the track detached. Fig. 4 is a perspective view of the gaging devices attached to the edge of the platen. Fig. 5 is a detail perspective view of one end of the sliding rod which operates the gage-finger. Fig. 6 is a sectional view showing the antifriction-ball, in the'end of the sliding rod.

Similar reference-numerals indicate similar parts in the several figures.

1 indicates the frame of the press, 2 the platen, and 3 the tympan, which is secured on the face of the platen in the usual manner. The ink-plate is indicated by at and the inking-roller frames by 5. 6 indicates side arms of the press, and these arms are respectively connected at one end to the inkingroller frame and at their other ends to the disk 7 on the left-hand side of the press and to the gear 8 on the right-hand side. The bed-plate, in which the type is supported, is indicated by 9. All these parts may be of any ordinary or approved construction and will operate in the usual manner;

To the upper edge of the platen are firmly secured brackets, (indicated, respectively, by 10 and 11.) Each of these brackets has a perforated ear 12,v which ears serve as bearings for the rod 13, which extends parallel to the may also turn horizontally thereon.

edge of the platen and is adapted to freely slide longitudinally in the perforated ears. The end of the rod, near the bracket 11, is provided with an adjustable-collar 14, and between this collar and the opposing face of the car 12 of the bracket 11 a coiled spring 15 is supported on the rod, with its respective ends abutting against the collar 14 and car 12.

16 indicates an adjustable collar to engage the other face of the car 12 and limit the movement of the rod in the direction in which the spring 15 normally forces it.

17 indicates a split clamp fitted on the rod 13 and adapted to slide on the rod, and 18" indicates a set-screw by means of which the clamp is secured in its adjusted positionon the rod. p Y

The gaging-finger is indicated by 19 and is connected at its outer end to the top of the clamp 17 by means of screws 20 and 21, the former of Which serves as a pivot on which the gaging-finger may swing and the latter, as a clamping-screw. In order to permit the adjustment of the gaging-finger, the screw 21 works through a curved slot 22 in the gaging-finger, and by this arrangement the angle of the gaging-finger to the sliding rod -I nay be adjusted as circumstances may require. The gaging-finger will be so connected to the clamp that it will lie fiat upon the surface of the tympan.

23 indicates a vertical post having at its lower end a clamp 24:, by means of which the post is secured to the arm 6, preferably on the left-hand side of the press.

25 indicates a track consisting of a metal bar curved upwardly atone end, as indicated at 26. This bar is provided with a boss 27 substantially midway the length of the bar,

and this boss is perforated to fit over the post 23. A set-screw 28 works in the boss 27 and is adapted to engage the post and clamp the track in any desired position. The track maybe adjusted vertically on the post and The curved end of the track will be toward the front or ope'rators side of the press and the track will be inclinede-that is, its inner end will be nearer than the curved end to the side of the platen, as clearly shown in Fig. 1. In the end of the rod which engages the track.

track a ball 29 is supported, and this ball will work in contact with the track and thereby reduce the friction between the rod and The end of the rod 13 which projects beyond the platen toward the track is provided with a joint 30 to allow the outer end of the rod to yield laterally and pass the track without breaking in case the press should be accidentally run backward. The joint is preferably formed by cutting a horizontally-disposed slot in one section of the L rod and beveling its end wall and forming a tenon on the other section to fit in the slot.

The end of the tenon will be beveled to seat against the beveled end of the slot when the sections are in alinement, and by this construction the outer section will yield only when pressure is applied to its rear face,

which would be the case if the press ran backward and caused the outer end of the to engage the forward end of the track.

When the platen is in position to receive a sheet of paper or cardboard to be printed, the several parts of the press will occupy the position shown in Fig, 2-, with the end of the sliding rod in engagement with the upper end of the curved portion of the track. The operator will place the sheet on the tympan in engagement with the bottom pins, which are usually provided to engage the bottom edge of the paper but it will not be necessary for him to move the sheet sidewise, as the object of our invention is to automatically adjust the sheet sidewise on the tympan and thereby do away with the use of side gage-pins. It is of course to be understood that the gagingfinger 19 will be so adjusted on the sliding rod as to bring the sheet to its proper position when at the extremity of itssidewise movement, which will be caused bythe track 25; Ordinarily the track will be given suflicientslant to cause the rod 13 tomove longitudin-ally about an inchand a quarter, and it is obvious, therefore, that if the operator places the edge of the sheet adjacent to the gaging-finger anywhere within this space the gaging-finger will, when it has completed its lateral movement, move the sheet into proper position. The movement of thegaging-fingerwill of course occur while the platen is being rocked and the type-bed swung forward in orv der to make the impression. Thedi'sk 7 turns: toward the front of the machine, and in its movement from the position indicated in Fig.

1 the curved portion 26 of the. track will move 1 upwardly and also toward the front of the maand the track-bar will pass out of engagement struction may be resorted to without depart with the rod just as the tympan begins to 5 move over to the type.

It will be understood that changes in the form, proportion, and minor details of coning from the spirit or sacrificing any of the advantages of this invention.

Having thus described the invention, what I claim is 1. The combination with the platen and :side arm of a printing-press, of a. vertical post secured to said arm and movable therewith, a track-bar supported intermediate its ends 5 on the post to turn horizontally thereon,.said

bar being arranged above the arm and obliquely thereto with its: inner end nearest to the platen, means to lock the bar on the K post,a spring-actuated slidingrod supported on the front edge of the platen with its outer end engaging the track-bar, and a, gagingfinger carried by the sliding rod and resting on the surface of the tympan, substantially j as and for the purpose specified.

2;. The combination with the platen, and side arm of a printing-press, of averticalpost secured tosaid arm and movable therewith, i a track-bar supported intermediate its, ends on the post to turn horizontally thereon, said {bar being arranged abovev the arm and obliquely thereto withits inner end nearest end engaging the track-bar, said rod having the sliding rod and resting on the surface of i the tympan, substantially as described.

In testimony that I claim the foregoing as i my own I have heretoafiixed my signature in the presence of two witnesses.

GUY W.. SMALL. Witnesses:

E. F. DRUCHE, G. H. SHoUTz.

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