US2221634A

US2221634A - Manifolding machine

Info

Publication number: US2221634A
Application number: US293518A
Authority: US
Inventors: Ford Frank Ronald
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-08-02
Filing date: 1939-09-05
Publication date: 1940-11-12
Anticipated expiration: 1957-11-12

Description

vF. R. FO RD MANIFOLDING MACHINE Nov. 12, 1940;

Filed Sept, 5, 1939 2 Sheets-Sheet l II H 1 11/ Tank Eva/ 9 o,

Nov. 12, 1940.

v F. R. FORD MANIFOLDING MACHINE Filed Sept. 5, 1959 2 Sheets-Sheet 2 FIG-3.3. Z7 0 han (R- DJ 15ml over a moistened pad against which they are ters Patent No. 2,048,543, and the spindle 9 as- I Patented Nov. 12, 1940 I UNITED STATES PATENT OFFICE MANIFOLDING MACHINE Frank Ronald Ford, Sparkbrook, Birmingham, England, assignor to Frank R. Ford Limited, Birmingham, England Application September 5, 1939, Serial No. 293,518 In Great Britain August 2, 1938 8 Claims. (01. 101-1325) This invention relates to manifolding machines engagement with the leading edge of a master of the type in which a master sheet bearing in sheet (notshown) bearing in reversed script the reversed script the matter to be reproduced is sematter to be reproduced. The clamping device cured to a cylinder, the copy sheets being passed may be constructed as described in my prior Letpressed by a damping member and then taken sociated with the cylinder 1 may be rotated between the cylinder and a pressure roller which thro Sp gears l from a hand Crank brings them into pressure contact with the sheet. l3-

In machines of the type aforesaid it is usual to Between the side members 5 is also arran a support the bearings of the pressure roller so that tank 14 holding a moistening fluid, which is fed they are movable towards or away from the eylby suitable means to an absorbent pad l5 in a inder axis, and adjustable spring means acting carrier l6. This container extends from one end upon these bearings are commonly provided in of the tank I4 towards the cylinder 1, being disorder that the pressure between the roller and posed substantially tangentially in relation to the 15 the cylinder may be varied as desired. latter and terminating adjacent the surface 3 In one such arrangement, described in my thereofs t of t e ppa atus ay be co prior Letters Patent No. 2,048,543, each bearing structed in accordance with my prior Letters Patis provided with a downwardly extending rod, ent aforesaid. and a compression spring is interposed between Above the moistened pad i5 is arranged an t nt on this rod and an angularly addamping member extending transversely of the 20 justable arm by means of which the force exerted machine and carried by a pair of levers I! which by said spring, and tending to press the roller are pivoted on pins l8 secured to the side mem, against the cylinder, may be controlled. bers 5. Means are provided in this type of machine The damping member aforesaid may be confor raising the damping roller or bar, at each structed as a bar which is fixed to the ends of '2 revolution of the cylinder to allow the insertion the levers bu p e e takes form of a of a fresh copy sheet, and hitherto this has been roller l9, as shown.

eifected by mounting the damping roller or bar Normally t e da p member rests in 0011- upon a pair of levers controlled by light springs tact with the moistened pad I5, but is raised or which tend to move the roller or bar into contact move wa therefrom 01108 in each reVOllltiOIli 30 with the moistened pad, said levers being engaged of the cylinder l by means of earns 20 secured periodically by means of cams rotating with the to the ends of the latter. cylinder. The cams 20 may act upon rollers 2| carried It has been found, with existing machines, that by members 22 which extend downwardly from 5 the matter on the master sheets tends to become the levers l1, and these members 22 may be ar-& faint after many copies have been taken, and it is ranged for adjustment as described in my prior the usual practice in such circumstances to in- Letters Patent aforesaid. crease the pressure on the pressure roller. Each time the damping member 19 is raised Hitherto, however, this increase of pressure by the cams 20, a y S t ed at 23) has not been accompanied by any increase in the may be fed beneath it to the nip between the 40 amount of moisture applied to the copy sheets, cylinder 1 and a pressure roller 24 mounted above and it is the object of the present invention to the latter. provide for such increased moistening. The ends of the spindle 25 of this pressure Referring to the drawings roller 24 are supported in bearings 26 which are Figures 1 and 2 are a side elevation and plan slidable in channels 21 in the side members 5 so. 45 view, respectively, of a manifolding machine arthat they can be moved towards or away from the ranged in accordance with the present invention, cylinder axis.

Figure 1 being sectioned on the line Il of Fig- Each of the bearin s 25 s Connected y & ure 2, and Figure 3 is a section on theline 33 downwardly ext nding rod 28 to a crank arm of Figure 2. 29 on a rock shaft 30 disposed transversely of the 50 In the construction illustrated, the apparatus machine. comprises spaced side members 5 secured to- The connection between each crank arm 29 gether by tie-rods 6 and having mounted between and the adjacent rod 28, as illustrated, is arthem a transversely disposed impression cylinder ranged in accordance with my prior Letters Pat- .55 l which is provided with a clamping device 8 for ent aforesaid, it being sufficient here to say that;

the screw-threaded lower end 3| of the rod 28 passes diametrically through a rotatable crank pin 32 carried by the arm 29, and that a compression spring 33 is interposed between this crank pin 32 and a nut 34 on the rod.

An operating lever 35 is secured to one end of the shaft 30 externally of the adjacent side member 5, and beneath this lever 35 a rocking lever is pivoted at 3B. The springs 33 tend to press the lever 35 against the upper arm 37 of this rocking lever, and may be associated in this by a tension spring 38 acting on an arm 39 carried by the shaft 30.

The angular position of the lever 35, and hence the pressure exerted on the cylinder by the roller 25, may be varied by oscillating the rocking lever by means of a handle it on the lower arm Al thereof. This arm 4! may be provided with a spring-controlled detent 52 which co-operates with recesses 43 in the side member 5 for the purpose of retaining the rocking lever in its adjusted position.

Individual adjustment of the pressures at the two ends of the roller 24 may be effected by screwing the nuts 3 along the threaded parts 3| of the rods 28.

Instead of the damping member 19 being pressed against the moistened pad l5 by means of torsion springs acting on the levers H, as described in my prior Letters Patent aforesaid, there is provided above each such lever a stem 44 adapted to exert downward pressure thereon.

Each stem M is disposed vertically and the upper part @5 thereof engages slidably with a sleeve 46 which is screw-threaded externally to engage a tapped hole in a plate t? which is movable with the adjacent bearing 26 of the pressure roller 24.

Preferably the plate ll is attached to a block 40 t8 which is adjustably secured to the top of the bearing 25, or alternatively, the plate 47 may be carried by the associated rod 28.

A milled head 39 on the screwed sleeve 46 facilitates rotation of the latter for the purpose 45 of varying the pressure on a coiled spring 59 which is interposed between the lower end of the sleeve 46 and a shoulder 58 on the stem 44.

The lower part of the stem M, which may be of flat section, is pointed at its extremity for en- 50 gagement in a conical recess 52 in the top of the lever ll, and may be slotted as at 53 to accommodate a tie-rod 54 connecting the blocks 48.

It will be seen that the arrangement above described ensures that any increase which may be made in the pressure exerted on the bearings 26 by the springs 33 is automatically transmitted to the levers I'l carrying the damping member l9, and thus an increase in the amount of moisture applied to the copy sheets is obtained whenever the pressure on the roller 24 is increased. Furthermore, the provision of the rotatable sleeves 416 and springs 55 allows individual adjustment of the pressures acting on the two levers l1.

It is found that the noise produced in existing machines by the upward and downward move ments of the damping member l9, and the latters tendency to bounce after dropping on to the copy sheet 23, is greatly reduced or eliminated by the use of the arrangement above described.

What I claim then is:

1. A manifolding machine comprising a stationary frame, a rotatable cylinder having means for attaching a master sheet thereto, a roller cooperating with said cylinder and adapted to bring a copy sheet into pressure contact with the master sheet thereon, a stationary moistened pad for damping said copy sheet before contact with said master sheet, a damping member adapted to press said copy sheet against said pad, pivoted levers carrying said clamping member, means for adjusting said roller towards the axis of said cylinder to increase its pressure on the latter, and mechanical means acting upon said levers to effect in response to such adjustment an automatic increase in the pressure exerted by said clamping member on said pad and hence in the amount of moisture transmitted therefrom to said copy sheet.

2. A manifolding machine comprising a stationary frame, a rotatable cylinder having means for attaching a master sheet thereto, a roller 00- operating with said cylinder and adapted to bring a copy sheet into pressure contact with the master sheet thereon, bearings supporting the ends of said roller and slidably adjustable on said frame towards the axis of said cylinder to increase the pressure exerted on the latter by said roller, a stationary moistened pad for damping said copy sheet before contact with said master sheet, a damping member adapted to press said copy sheet against said pad, pivoted levers carrying said damping member, and means mechanically coupling said bearings to said levers for effecting an automatic increase in the pressure exerted by said damping member on said pad and hence in the amount of moisture transmitted therefrom to said copy sheet in response to adjustment of said roller towards the axis of said cylinder.

3. A manifolding machine comprising a stationary frame, a rotatable cylinder having means for attaching a master sheet thereto, a roller cooperating with said cylinder and adapted to bring a copy sheet into pressiu'e contact with the master sheet thereon, bearings supporting the ends of said roller and slidably adjustable on said frame towards the axis of said cylinder to increas the pressure exerted by the latter on said roller, a stationary moistened pad for damping said copy sheet before contact with said master sheet, a damping member adapted to press said copy sheet against said pad, pivoted levers carrying said damping member, and stems carried by said bearings and adapted to exert a pressure upon said levers which increases as said roller is adjusted towards the axis of said cylinder, such adjustment thus being automatically accompanied by an increase of the pressure exerted by said damping member on said pad and hence in the amount of moisture transmitted therefrom to said copy sheet.

4. A manifolding machine comprising a stationary frame, a rotatable cylinder having means for attaching a master sheet thereto, a roller cooperating with said cylinder and adapted to bring a copy sheet into pressure contact with the master sheet thereon, bearings supporting the ends of said roller and mounted on said frame for sliding movement towards and away from said cylinder, a stationary moistened pad for damping said copy sheet before contact with said.

'master sheet, a damping member adapted to press said copy sheet against said pad, pivoted levers carrying said clamping member and blocks mounted on said bearings, stems carried by said blocks and adapted to press downwards upon the tops of said levers, whereby an increase in the pressure between said roller and said cylinder is automatically accompanied by an increase of the pressure exerted by said damping member on said pad and hence in the amount of moisture transmitted therefrom to said copy sheet.

5. A manifolding machine comprising a stationary frame, a rotatable cylinder having means for attaching a master sheet thereto, a roller cooperating with said cylinder and adapted to bring a copy sheet into pressure contact with the master sheet thereon, bearings supporting the ends of said roller and mounted on said frame for sliding movement towards and away from said cylinder, a stationary moistened pad for damping said copy sheet before contact with said master sheet, a damping member adapted to press said copy sheet against said pad, pivoted levers carrying said damping member, a bracket carried by each of said bearings, an adjustable screwed sleeve engaging a tapped hole in said bracket, and a stem slidably mounted in said sleeve and pressed by the latter towards the adjacent lever,

whereby an increase in the pressure between said roller and said cylinder is automatically accompanied by an increase in the pressure exerted by said damping member on said pad, and pressure exerted by the two ends of said clamping member being variable individually by adjustment of said sleeves.

6. A manifolding machine comprising a stationary frame, a rotatable cylinder having means for attaching a master sheet thereto, a roller cooperating with said cylinder and adapted to bring a copy sheet into pressure contact with the master sheet thereon, bearings supporting the ends of said roller and mounted on said frame for sliding movement towards and away from said cylinder, a stationary moistened pad for damping said copy sheet before contact with said master sheet, a damping member adapted to press said copy sheet against said pad, pivoted levers carrying said clamping member, a bracket carried by each of said bearings, an adjustable screwed sleeve engaging a tapped hole in said bracket, a shouldered stem slidably mounted in said sleeve, and a spring acting between the shoulder on said sleeve and the end of said stem and pressing the latter towards the adjacent lever, whereby an increase in the pressure between said roller and said cylinder is automatically accompanied by an increase in the pressure exerted by said damping member on said pad, the pressure exerted by the two ends of said damping member being variable individually by adjustment of said sleeves.

'7. A manifolding machine comprising a stationary frame a rotatable cylinder having means for attaching a' master sheet thereto, a roller cooperating with said cylinder and adapted to bring a copy sheet into pressure contact with the master sheet thereon, bearings supporting the ends of said roller and mounted on said frame for sliding movement towards and away from said cylinder, a stationary moistened pad for damping said copy sheet before contact with said master sheet, a clamping member adapted to press said copy sheet against said pad, pivoted levers carrying said damping member, and stems carried by said bearings and adapted to exert a downward pressure upon said levers, said stems being pointed at their ends for engagement with conical recesses in said levers, whereby an increase in the pressure between said roller and said. cylinder is automatically accompanied by an increase of the pressure exerted by said damping member on said pad and hence in the amount of moisture transmitted therefrom to said copy sheet.

8. A manifolding machine comprising a stationary frame, a rotatable cylinder having means for attaching a master sheet thereto, a roller cooperating with said cylinder and adapted to bring a copy sheet into pressure contact with the master sheet thereon, bearings supporting the ends of said roller and mounted on said frame for sliding movement towards and away from said cylinder, a stationary moistened pad for damping said copy sheet before contact with said master sheet, a damping member adapted to press said copy sheet against said pad, pivoted levers carrying said damping member, blocks mounted on said bearings, a tie-rod connecting said blocks, and stems slidably supported upon said blocks and slotted to clear said tie-rod, said stems being adapted to press downwards upon the tops of said levers, whereby an increase in the pressure between said roller and said cylinder is automatically accompanied by an increase of the pressure exerted by said damping member on said pad and hence in the amount of moisture transmitted therefrom to said copy sheet.

FRANK RONALD FORD.