US711779A

US711779A - Feed-gage for printing-presses.

Info

Publication number: US711779A
Application number: US7735701A
Authority: US
Inventors: Edward L Megill
Original assignee: Individual
Current assignee: Individual
Priority date: 1901-10-03
Filing date: 1901-10-03
Publication date: 1902-10-21
Anticipated expiration: 1919-10-21

Description

N0. 7||,779. Patented Oct. 2|, I902.

. E. L. MEGILL. FEED GAGE FOR PRINTING PnEs'sE's.

A (Application filed Oct. 8,1901.) No Model.) 2 Sheets-Sheet WITNESSES: INVENTOR ATTORNEY mus PETERS co. momuma, WASHINPTUN, u 0.

No. 7ll,779. I Patented Oct. 2|, I902.

E. L. MEGILL.

F EED GAGE FOB PRINTING PRESSES. (Application filed Oct. 8, 1901.)

(No Model.) 2 Sheets-Shaet 2.

Edi/0.

WITNESSES Grime/i a ATTORN [Y UNITED STATES PATENT OFFICE.

EDWARD L. MEGILL, OF BROOKLYN, NEW YORK.

FEED-GAGE FOR PRlNTlNG-PRESSES.

SPECIFICATION forming part of Letters Patent N 0. 711,779, dated October 21, 1902. Application filed October 3, 1901. Serial No. 77,357. (No model.)

[ class of feed guides and gages for the proper placing of the sheet on the platen of the press, of which class the gage shown in the United States Patent No. 596,214, granted to me December 28, 1897, is one example. The purpose of the device is in the main to provide means for automatically placing properly a misplaced sheet through the medium of a gripper on the press.

One of the important features of the preszo ent invention residesin the means for mounting the device adjustably and with accuracy on the tympan-sheet of the press, and another feature resides in the particular construction of the gage, as will be hereinafter more fully z 5 described.

In the accompanying drawings, which illustrate an embodiment of the invention and its application, Figure l is a side elevation of the gage. Fig. 2 is a front elevation. Fig. 3

is a plan with the operating arm and spring partly broken away to better disclose the parts below or beneath. Figs. 4 and 5 are fragmetary detail views, on a larger scale, illustrating the hinge construction. Fig. 6

is a perspective view of the gage detached.

Figs. 7 and 8 are fragmentary detail views of parts of the gage. Fig.9 is a plan view of the gummed retainer of the gage. Fig. 10 is a general plan or face view of the platen of 0 a printing-press, showing the application of the gage thereto. Figs. 11 and 12 are views illustrating the application of the invention to a front gage for the sheet.

In Fig. 10, X designates an ordinary platen of a printing-press,Y the grippers thereof,and

Z the tympan-sheet stretched over the platen in the usual wayand by the usual means. All of these parts are too common in platen printing-presses to require special description.

S represents a sheet on the platen in position to be printed upon, the proper position ing of the sheet on the platen with respect to the form being secured ordinarily by a side gage or guide (usually at the left) and two front or bottom gages.

In Fig. 10 the two front gages are designated as a whole by B B and the side gage by A. It is in these gages and the means for securing them to the tympan-sheet in an adjustable manner and without cutting or in any way puncturing the said sheet that the present invention resides.

The side gage A will be first described with reference to Figs. 1 to 8, promising that devices of this class have been called automaticsheetguidesandsetters. Preliminarily it may be stated that this gage A is designed to be employed as a side guide or gage for the sheet; that it is made from thin sheet metal, so that when the gripper which bears upon it at the time the impression is made and compresses it will not be elevated appreciably; that the pressure of the gripper shall move the sliding gage-head over the tympansheet and up to the gaging point or line on the latter, and that when the pressure is relieved the gage-head will be movedback again automatically. All of these features exist in the gage of my previous patent before mentioned; but in the present case the construction is different.

1 is the base-plate of the gage, which will be by preference of thin sheet metal.

2 is the operating presser-arm, also of sheet metal and relatively quite broad. This arm is hinged to lugs 3 on the base-plate and rests on the crown or arch of a broad spring 4, of thin resilient metal, which is hinged or secured to the base-plate at 4 Figs. 4 and 5, independently of the arm 2. The sliding gage proper is seen detached in Fig. 8. Its body 5 is slidably mounted in keepers 6 on the baseplate, and it has ahead 7, which extends transversely of the body 5, one branch of said head being curved upward and spring-like and having on its upturned branch or extremity a T- head 7. This gage proper (see Fig. 8) has a slot 8 and a hook 9, by which it is coupled to the front or free end of the spring 4, which has an aperture 10, Figs. 6 and '7, to be engaged by the hook 9. When there is no pressure on the gage, the spring 4 assumes the arched or curved form clearly seen in Figs.

1 and 6, thus elevating the arm 2 and drawterfere with its proper working, and it is one of the objects of the present invention to overcome this difliculty.

The tympan-sheet is stretched smoothly over the platen, and it has been the common practice to secure a gage thereto by a pin or spur which punctures the sheet. This means of attachment is objectionable, as it is important to keep the tympan-sheet intact. Another means which has been employed is to gum or paste the gage directly to the tympansheet; but this is objectionable for various reasons, one being the difliculty of attaining proper adjustment.

The means I employ for securing the gage to the tympan-sheet will now be described. At the sides of the gage are like clamping devices, each comprising a thin disk or plate 11 below the base-plate 1, an upright screwthreaded stud 12, fixed in said disk and extending up through a hole in the base-plate, and a milled nut 13, screwed onto the upper end of said stud. Operating in connection with these devices is a gummed retainer 14, Fig. 9. This retainer will be by preference of thin strong paper out to substantially the form shown and provided with strips of gum 14 and two slots 14 spaced to receive the studs 12. When this retainer is gummed to the tympan-sheet, two pockets are formed adjacent to the slots 14 to receive the disks 11, which when the gage A is placed in position take under the sheet of the retainer 14, while the base-plate 1 takes over said sheet. When so placed, by screwing up the nuts the retainer-sheet will be clamped between the disks 11 and the base-plate and the gage thus securelyheld in place. At the same time the gage may be readily and accurately adjusted on the tympan-sheet by slightlyloosening one or both of the nuts 13, as will be readily understood. This means of securing the gage has important advantages. When there are two adjustable securing-points, the gage cannot turn, as it is liable to do about a single securing-point. The construction provides for a relatively long adjustment without perforating or slitting the tympan-sheet. The dry gum on the retainer permits the latter to be secured to the tympan-sheet without wetting said sheet to any material extent; but the use of dry gum is not essential. The retainer may be secured directly to the metal of the platen if desired or if the occasion re quires it.

Fig. 11 is a perspective view showing one of the simple bottom gages B provided with means for retaining it in place on the tympansheet, which are of the same character as that described for the side gage A. The retainer 15 for this gage is seen detached in Fig. 12 and is provided with gummed portions 15 and a slot-15 The gage B comprises a gagehead 16 on an upper base-plate 1, a thin under plate 11, provided with an upright screw-threaded stud 12, which projects up through the base-plate, and a milled nut 13.

Figs. 4 and 5 show the detent whereby the extent of the upward movement of the arm 2 is limited. On the arm are rearward projections 17 back of the hinging-rod- 18, and these bear on stops 1.9 on the base-plate when the arm is elevated.

It will be understood by inspection that it will not be necessary in order to protect the working parts beneath from fouling with ink that both the operating or pressure arm. and the arched spring shall be wide; but it is preferred to make them so. The means for securing or clamping the base-plate to the retainer 14 may be varied. A screw-operated device for this purpose is preferred.

It will be seen, especially in Fig. 9, that the material of the retainer 14 is not of the same width between the slots 14 'that it is at its ends and that consequently the material extends out at one side of the mouth of the slot more than at the other side. This is to facilitate the entry of the shanks of the clamping-screws 12 in the respective slots in placing the gage. The walls of the slots which extend out farthest from convenient guides for the screws of the securing devices.

The operation is as follows: When the platen of the press moves up to the form and the gripper moves up to the platen, the gripper first encounters the arm 2 and presses it fiat up to or upon the platen, thus causing said arm to press upon the arched spring 4, which is also flattened and straightened. In straightening out, the free end of the spring 4 moves outward, carrying with it the sliding gage proper, thus moving the head 7 of the latter out to the gage point or line. The sheet S, which has been placed up to and against the upwardly-curved branch of the head 7, is thus also moved out to the gagepoint. The gripper bears on the yielding spring-like upturned end of the gage-head 7 and also presses it to the platen. The T- head 7 on the upturned end of the gage-head 7 serves to provide a broad or laterally-extended tip on the relatively slender and usually slightly tapered gage-head 7 for the gripperY to impinge upon. As seen in Fig. 1,

the gripper may take over the entire gagehead '7, or it may, as indicated by the dotted line in Fig. 8, only take over and bear on one of the branches of the T-head 7 and this will serve to flatten down the gage-head. In any case the gripperwill cross the arm 2 and bear thereon in front of the body of the gage.

By hinged as herein employed with reference to the arm 2 and spring 4 is meant the mounting to turn about a hinge-pin as distinguished from an integral construction,such

as that shown in my former patent, No. 596,214.

Having thus described my invention, I claim- 1. An adjustable registering-gage, having a base-plate, and a plurality of screw clamping mechanisms for securing said base-plate adjustably on the tympan-sheet at different points.

2. An adjustable registering-gage device having a slidable gage and two separate adjustable clamping devices for securing the,

registering-gage device on the platen, said securing devices being situated at opposite sides of the slidable gage.

3. A feed-gage fora platen printing-press, having a screw clamping device for securing it in place on the platen, in combination with adapted to be secured to the tympan-sheet and to form pockets to receive said disks, substantially as set forth.

5. An automatic registering-gage having a base-plate, a broad spring 4: hinged to said plate, a broad presser-arm 2 hinged to said plate independently of the spring, anda sliding gage 5 mounted in keepers on the baseplate under the spring and coupled to the latter, substantially as set forth.

6. An automatic registering-gage having a base-plate, a sliding gage mounted on the base-plate, a spring to operate said sliding gage, and a presser-arm hinged to the basedirectly over the longiplate, said arm being gage, whereby side tudinal axis of the sliding draft is avoided.

7. An automatic registering-gage, having a base-plate, a broad presser-arm hinged to said plate, a sliding gage proper the body of which is mounted slidably on the base-plate wholly under the said arm and extending longitudiha'vin g a base-plate,

nally parallel with the latter, and a spring for operating said sliding gage.

8. The combination with the registeringgage and the means for securing the same to the retainer, of the said retainer having in its edge two slots, the material of the retainer extending out farther at one side of the mouth of the slot than at the other, substantially as and for the purpose set forth.

9. An automatic registering-gage having a presser-arm, a sliding gage proper provided with a spring-like head 7 having a T-shaped extremity 7 for the gripper to bear on, and a spring for operating said sliding gage.

10. An automatic registering-gage device an operating-arm hinged to said base-plate, a sliding gage, and means to operate said gage disposed between, the said arm and gage, said means being disposed directly over the longitudinal axis of the body of the sliding gage, whereby side draft is avoided in operating said gage.

11. The combination with a registeringgage, having clamping devices, of a retainer distinct from and adapted to be pasted or gummed to the tympan-sheet, said retainer having in it slots to receive the clamping devices, whereby the gage may be secured adjustably on the platen without cutting the tympan-sheet.

12. An automatic and adjustable gage device having a base-plate, a slidable gage, an arm and spring for operating the latter, and clamping devices for securing the base-plate of the gage device to the platen, the said clamping devices being set in line at an angle to the path of the slidable gage, and the point on the operating-arm upon which the gripper is intended to impinge for operating the gage being situated on a line between the said clamping devices and the gage-head.

13. An automatic and adjustable gage device having a base-plate, a slidable gage, an arm and spring for operating the latter, and clamping devices for securing the base-plate on the platen, the said clamping devices being set in a line at an angle to the path of the sliding gage, and the depressible head of said gage being in advance of said line for the gripper to impinge upon.

In witness whereof I have hereunto signed my name, this 27th day of September, 1901, in the presence of two subscribing witnesses.

EDWARD L. MEGILL.

Witnesses:

PETER A. Boss, H. ALAN OONNETT.