US797272A - Rotary copying-press. - Google Patents

Description

No 797,272. PATENTED AUG. 15, 1905. H. EARL. ROTARY COPYING PRESS.

APPLICATION FILED APR. 3,1905.

f 2 5mm A? INVENTUR w www/ w ATTORNEY i ltili f'i il lf weevil MGM-f lf l $tih tpecification of Letters Patent.

Patented Aug. 15, 1905.

Application filed April 3, 1905. Serial No. 253,510.

To all whom/ it 'nmy concern.-

He it known that I, HuaMoN EARL, a citizen of the United States, residing at Marion, in the county of Grant and State of Indiana, have invented certain new and useful Improvements in Rotary Copying-Presses, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to new and useful improvements in rotary copying-presses, hereinafter more fully described, and particularly pointed out in the claims.

The object of this invention is to provide a means whereby a uniform pressure will be applied to the pressure-roller throughout its entire length, thereby permitting separate copies of different thicknesses placed side by side to be passed between said roller and its copying-roller to receive each an equal amount of compression; also, to provide an adjustable yielding 'means whereby said compressionroiler may be adjusted to any degree of tension; also, to provide a means whereby the traversing plate or table of the apparatus will be supported in proper position relative to said pressure-roller irrespective of the position of the latter and whereby the position of said table relative to said pressure-roller will always be maintained equal. if. attain these objects by means of the mechanism illustrated in the accompanying drawings, in which similar numerals of reference designate iilze parts throughout the several views.

Figure 1 is a longitudinal sectional elevationai view of my machine, taken through the line A B. (See Fig. 2.) Fig. 2 is a plan view of the same. Fig. 3 is a transverse sectional elevational view taken through the line C D (see Fig. l) and looking in the direction of the arrow at. Fig. 1 is a detail broken view of the pressure-roller and the radius-bar-supporting levers whereby the said roller is adjustably supported. Fig. 5 is a detail perspective sectional view of the radius-bar, showing the groove formed in the top edge thereof wherein the edges of the traversing plate slide; and Fig. 6 is a detail broken perspective view of the cross spring-bar whereby a yielding pressure is transmitted to the paper-feed roller of the mechanism.

The frame of this machine comprises the side frames 1 and the forward and rearward cross frames 2 apd 3, which are securely bolted together to form a rigid structure. Situated at the front top portion of the frame is the main roller 4., preferably of rubber or A lower pressureroller 6, preferably of,

steel or other metal or hard material, has its cndjournals 7 journalcd in suitable bearings formed in the free ends of the horizontallyextending radius-bars f5. The roller 6 is preferably situated slightly in advance of the upper copying-roller 1, the object of which will be hereinafter described. The horizontallyextending radius-bars 8 extend baekwardly from the pressure-roller 6 to a point adjacent to the rear wringing-roller 9 and are pivoted at their rear or pivotal ends on their pivotal screws 10, which latter are screwed into the side frames 1. The top edges of the radiusbars 8 are provided with the grooves 11. into which the edges of the traversing-plate 12 are fitted to slide longitudinally therein, and thus it will be readily seen that the radius-bars 8 and the plate 12 combined constitute a swing ing table upon which the material is laid and conveyed to and under said copying-roller 1. The traversing plate 12 is provided with the serrated teeth 13 at its rear end and has its forward end provided with a bend 1 1, which latter is for the imrpose of forming a stop to prevent the traversing plate traversing too far in a rearward direction.

The object of placing the pressure-roller 6 in a position slightly in advance and below the copying-roller is for the purpose of maintaining the traversing plate 12 in close contact and within the grooves 11 of the bars throughout its traversing movement.

The wringing-roller 9, preferably of metal or hard rubber or other suitable dense mate rial, is covered with a fine fabric, such as muslin, and has its end journals 15 journaled in rigid bearings formed in the rear top portion of the side frames 1. The journals 5 and 15 are prolonged to receive the operating-handles 16 and 17, whereby the said rollers are manually operated.

A stripping-roller 18 is journaled slightly above and rearwardly of the wringing-roller 9 and provided with a series of bands or cords 19, which run in the grooves 20 formed in said roller and StlllOLllltl the wringing-roller 9, and the object of said bands is for the purpose of stripping the said wringing-roller of the damped or moistened copyiiigiiaper, which were such bands not provided would adhere to the surface of the wringing-roller 9 and be wound thereon.

A dampening or moistening roller 21, preferably of metal or hard rubber covered with coarse fabric, as coarse muslin, is situated ings 24, formed in the ends of the thrust-bars 25. The thrust-bars 25 rest and slide on the horizontally-extending guide-bars 26, formed on the inner sides of said frames 1. Atan intermediate point between the forward and rearward bearing ends of said thrust-bars 25 are formed the journal-bearings 25*, in which the journals 27 of the paper-roll 27 are revolubly supported. The forward ends of the thrust-bars 25 are provided with the feet 28, which receive the ends of the cross or secondary spring-bar 29.

The cross spring-bar 29, which is preferably constructed of cast-iron and is necessarily made proportionately thicker and stronger than would be required of a steel spring used for a like purpose to resist the stress applied to it, rests on the forward portion of the guide-bars 26, and at an intermediate point of said bar is situated a bindingscrew 30, which is screwed into the forward cross-frame 2 and by which screw the tension of the cross or secondary spring-bar 29 is adjusted to either increase or diminish the intensity of pressure of the dampening-roller 21 against the wringing-roller 9.

A vertically-extending boss 31 is formed centrally on the bar 29 and is adapted to receive the binding-screw 82, which latter is adapted to bear against the upper or primary spring-bar 33, which bar bears at its ends against the central under side of the bottom edges of the radius-bars 8 adjacent the pressure-roller 6 to yieldingly maintain the latter in contact with the traversing plate 12 to maintain the same in uniform contact with the copying-roller 4. It will be readily seen that when the traversing plate 12 is provided with a series of papers of different or various thicknesses placed side by side on said traversing plate 12 and passed simultaneously between the copying-roller 1 and the pressureroller 6 the latter will tilt to accommodate its surface to the inequality of the thickness of the paper or papers being copied to impart a uniform pressure to such papers, thereby producing uniform copies in both instances.

The copying-paper of the paper-roll 27 is passed over the edge of the tank 22, around and between the dampening-roller 21 to the wringing-roller 9, to and upon the traversing plate 12. hen a sufiicient quantity of the copying-paper has been fed to the plate by means of the operating-handle 17, the operator grasps the end of said paper in one hand and with the other grasps the handle 16 and turns the same quickly a limited extent to cause the jagged or serrated end of said traversing plate 12 to cut or sever the copying-paper thus fed to the desired length. hen a plurality of copies are required, this operation is repeated as often as there are copies to be made, and when asufiicient number of pieces are thus provided to receive the copies the operator revolves the handle 16 in the direction indicated by the arrow Z) to cause the traversing plate 12 and the papers to be copied placed upon it to be traversed under the copying-roller 4 to be pressed by the pressure-roller 6, and thus the operation is continued and the copies are delivered at the forward end of the machine.

Having thus fully described this my invention, what I claim as new and useful, and desire to cover by Letters Patent of the United States therefor, is-

1. In a rotary copying-press, the combination with a copying-roller and a pressureroller, of a swinging table comprising a traversing plate and horizontally-extending supporting radius-bars, said radius-bars supporting said pressure-roller at one of their ends and pivotally supported at their other ends, and means for yieldingly pressing the free end of said radius-bars to yieldingly maintain said pressure roller against said copyingroller.

2. In a rotary copying-press, the combination with a rigidly-connected copying-roller and a pressure-roller, of a horizontally-extending swinging table comprising a traversing plate and plate-supporting radius-bars extending rearwardly of said pressure-roller and provided at their forward ends with bearings wherein said pressure-roller is journaled, pivotal pins whereon said radius-bars are mounted and means for yieldingly pressing the bearing ends of said radius-bars to yieldingly maintain said pressure-roller in contact with said copying-roller.

3. In a rotary copying-press, the combination with a copying-roller supported in fixed bearings, of a horiZontally-extending swinging table comprising a traversing plate and supporting radius-bars, said radius-bars having their rear ends pivoted on fixed centers, a pressure-roller situated beneath said copying-roller and having its axis slightly in advance of said copying-roller, said traversing plate extending between said rollers and resting on said radius-bars and means for revolving said rollers.

1. In a rotary copying-press, the combination with a copying-roller supported in fixed bearings, of a swinging table comprising a pair of horizontally-extending radius-bars and a plate resting on said bars, a pressureroller journaled in the free ends of said radiusbars and situated beneath said copying-roller slightly in advance thereof, a spring situated at the inner side of said radius-bars adjacent to the free or swingingends thereof and means for adjusting the tension of said spring.

5. in a rotary copying-press, the comhination with a copying-roller supported in fixed bearings, of a swinging table comprising a pair of horizontally-extending radiusbars provided with longitudiwilly-extending platereceiving grooves formed. in their inner top edges and a traversing plate beneath said eepying-roller fitted to slide on said grooves, a pressureroller journaled in the tree or swinging ends of said radius-bars and situated beneath said copying-roller slightly in advance thereof, a spring situated at the inner side of said radius-bars adjacent to the free or swinging ends thereof and means for adjusting the tension of said spring.

6. in a rotary co fiying-press, the combina tion with a copying-roller supported in fixed bearings, of a swinging table comprising a pair ol horizontally-extending radius-bars provided with longitudinally-extending platereceiving grooves formed on their inner top edges and a traversing plate beneath said copying-roller fitted to slide in said grooves, a pressure-roller journaled in the tree or swinging ends of said radius-bars and situated beneath said copying-roller slightly in advance thereof, a spring situated at the inner side 01 said radius-bars adjacent to the free or swinging ends thereof, a cross-bar extending beneath said spring and a set-screw secured in said cross-bar whereby the tension of said spring is adjusted.

7. ln a rotary copying-press, the combination with a copying-roller supported in fixed bearings, of a swinging table situated beneath said copying-roller, and means for yieldingly supporting said table in contact with said copying-roller.

8. In a rotary copying-press, the combination with a copying-roller supported in fixed bearings, of a swinging table comprising a traversing plate and su 'morting radius-bars situated beneath said copying-roller, a pressure-roller carried by said radius-bars and situated beneath said copying roller, and means for yieldingly supporting said table in contact with said copying-roller.

9. In a rotary copying-press, the combination with a pressure-roller and a swinging table situated beneath said pressure-roller, a primary spring-bar resting against said table, a secondary spring-bar situated beneath said primary spring-bar, thrust-bars situated beneath said secondary spring-bar, guides for supporting said thrust-bars, of a wringingroller situated at the opposite or pivotal end of said swinging table mounted in rigid bearings, a moistening-roller contacting with said wringing-roller and having its ends journaled in the rear ends of said thrust-bars and means for independently adjusting the tension of said primary and secondary s11 ring-bars.

In testimony whereof I al'lix my signature in presence of two witnesses.

HERMON EARL.

Witnesses:

illIOMPSON 1i. Butt, FLo'n uNo n U 1MB uL.

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