US2527181A

US2527181A - Liquid feeding means

Info

Publication number: US2527181A
Application number: US740444A
Authority: US
Inventors: Ford Frank Ronald
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-11-16
Filing date: 1947-04-09
Publication date: 1950-10-24
Anticipated expiration: 1967-10-24

Description

Oct. 24, 1950 5, FORD 2,527,181

LIQUID FEEDING MEANS Fil ed April 9, 1947 2 Sheets-Sheet 1 FIG]. 4!

59 Q is H\ M 28 c I I I Q Y I I HI FIG. 2.

INVENTOR BY A a 6 ATTORNEY.

F. R. FORD 2,527,181 LIQUID FEEDING MEANS Filed April 9, 1947 .2 Sheets-Sheet 2 INVENTOR M W in 7L,

Y (9%? 11mm,;

H ATTQRNEY.

Patented Oct. 24, 1950 LIQUID FEEDING MEANS Frank Ronald Ford, Birmingham, England Application April 9, 1947, Serial No. 740,444 In Great Britain November 16, 1945 Section 1, Public Law 690, August 8, 1946 Patent expires November 16, 1965 r 6 Claims.

This invention relates to duplicating machines of the general class in which the copy sheets are fed into the machine, moistened, and brought into pressure contact with a master sheet bearing in V reversed script the matter to be reproduced, the fluid for moistening the copy sheets being fed to an absorbent pad with which the copy sheets make contact before reaching the master sheet which is mounted on a rotating cylinder.

More particularly, the invention has reference to the type of machine in which a feeding pad supplied with fluid from a tank through the medium of wicks is automatically oscillated into and out of contact with the moistening pad during each operative cycle of the machine, means being provided for varying the period of such contact relatively to the period during which a copy sheet is moistened so that the amount of liquid supplied to such sheet may be regulated in accordance with the thickness and absorbent quality of the paper.

In Letters Patent No. 2,171,061, issued to me August 29, 1939, I have described a moistening device in which a rocker driven from the cylinder shaft oscillates a lever angularly adjustable upon I a pin, an actuating member on the latterbeing adapted to engage an arm or member on a rockshaft carrying the feeding member and lost motion being provided between the actuating member and the arm or member aforesaid. In this case the rocker-operated lever was provided with a peg engageable in one of a series of angularly spaced holes in the actuating member, the pin carrying the lever being movable endwise to separate the peg from the actuating member during adjustment of the latter.

The present invention has for its chief object to provide a more readily operable adjusting mechanism.

Referring to the drawings:

Figure 1 is a sectional view in side elevation.

Figure 2 is a sectional plan view.

Figure 3 is a view in front elevation,

Figure 4 is a view in side elevation.

Figure 5 is a sectional plan view.

Figure 6 is a sectional view in side elevation.

Figures 3 to 6 inclusive are drawn to a larger scale than Figures 1 and 2.

In the construction illustrated the invention is shown as applied to a moistening device similar to that described in my prior specification No. 532,949 now Patent No. 2,424,534 dated July 22, I941, the tank or container 10 for the moistening fiuid being provided at opposite sides with upwardly directed tubular extensions ll containing portions of a common feed wick whose extremities dip into the fluid.

Secured to the upper ends of these tubular extensions is a rigid horizontal plate I2 extending transversely of the machine and the top of the tank is provided at its ends with flanges 13 which slidably engage the frame of the machine and serve to support the moistener as a whole.

Upstanding brackets M at the ends of the horizontal plate I2 support the ends of an oscillatable element comprising a length of tubing I5 with coaxial pivot pins 16 fixed in its ends and embraced by a U section member I! of sheet metal, whose limbs project in parallel relationship at one side of the tube and grip between them an absorbent feeding pad I8 formed by the central portion of the wick aforesaid.

The tubular extensions Il may also, as described in my co-pending application for Patent, Serial No. 651,265, filed March 1, 1946, contain strands of worsted which enter the 0scillatable tube through holes adjacent its ends and emerge again through holes at the central portion of such tube. The additional supply of fluid to its central portion through the medium of these worsted strands tends to equalize the moistening of the pad over its full length.

The pivot pin [6 at one end of the oscillatable feed element carries an arm [9 which is acted on by a spring 20, the effect of the latter being to bias the oscillatable element having the pad 18 towards a substantially vertical or steeply inclined position in which its free edge projects through a longitudinal slot 2 in the horizontal plate I 2 and makes contact with a moistening pad 2| in an angle-section carrier 22 which is detachably secured to the'underside of the plate 12.

Freely mounted on this pivot pin 1 6 of the feed element is a rocker 23 adapted to be located by means hereinafter described in any one of a variety of angular positions relatively to the feed element.

Suitable means are provided whereby, at each revolution of the cylinder, this rocker 23 is displaced angularly in such a manner as to separate the feeding pad from the moistening pad, the angular setting of the rocker in relation to the feed element determining the duration of the period of contact between the two pads and hence the quantity of fluid fed to the moistening pad at each operative cycle of the machine.

The angular location of the rocker 23 is controlled by setting means carried on the pin i 6 and conveniently comprising an arm 24 fixedly mounted on the pivot pin l6 by a screw disposed alongside the rocker 23.

The latter is formed at the side remote from its operative profile 26 with a concentric portion formed with gear teeth 21 engaging a pinion 23 on a short spindle 29 carried by the arm 24.

This gearing can be actuated to adjust the rocker 23 upon the pivot pin [6 by means of a manually operable setting wheel 30 mounted on the spindle 29 at the side of the arm 24 remote from the pinion 28.

This setting wheel may have a milled or knurled periphery with angularly spaced flats 3| each bearing a numeral. For example, the numerals l to 6 may be employed, and any of these numerals may be aligned with an index mark at the free end of the arm to indicate a different setting of the cam.

Preferably the free end of the arm 24 has a lateral lug 32 which extends beyond the pinion and the extremity 33 of this lug is directed towards the pivot pin [6 in parallel relationship with the arm.

This end portion 33 of the lug is drilled to provide a second bearing for the pinion spindle 29 and the latter may be provided at the end remote from the setting wheel with a disc 34 having a serrated edge 35 acted upon by a spring plate 36 carried by the lug, so that the pinion spindle is frictionally located in any position to which it may be adjusted.

Furthermore, the above-mentioned end portion of the lug may overlap the periphery of the rocker 23 and thus serve to position the latter endwise of the pivot pin IS on which it is freely mounted.

The

assembly

23, 24 and 26 turns as a unit around the axis of the pin 16 when the rocker 23 is moved by a lever 31 pivoted to the frame at 38 and oscillated by an eccentric 39 on the cylinder shaft. A spring 40 is provided keeping the roller 4| in contact with the eccentric.

During each revolution of the cylinder the lever 31 is rocked on its pivot by the eccentric 49 on the cylinder shaft. One end of the lever acts 25 and upon the edge of the rocker 2i and causes the 4 rocker to oscillate. The rocker and the pinion 28 are locked together against relative rotation by the spring 36, so that the spindle 29 when the rocker is oscillated moves bodily around the axis of the shaft 15, and because the arm 24 is fixed to the pivot Hi the oscillating motion is transmitted to the shaft l5, causing the feeding pad 18 to be moved away from the moistening pad 2|. Adjustments of the shaft l3 cause the rocker 23 to be adjusted around the axis of the pivot 16, bring the edge 26 further into or further away from the orbit of the outer end of the lever 31.

What I claim then is:

1. A liquid feeding means including a stationary moistening pad, an oscillating feed pad arranged f or intermittent contact with said moistening pad, and means for adjusting the degree of each contact between the feeding pad and the moistening pad during the operative cycle of the machine, including an oscillating shaft carrying the feeding pad, an arm fixed on said shaft, a rocker mounted on said shaft so that it can turn thereon, a spindle mounted in said arm so that it can rotate, said spindle being parallel to but spaced from said shaft, a setting member fixed on said spindle whereby the spindle may be rotated, a pinion fixed on said spindle, said rocker having teeth engaged by said pinion, and means for rocking said rocker around the axis of said shaft.

2. A liquid feeding means including a stationary moistening pad, an oscillating feed pad arranged for intermittent contact with said moistening pad, and means for adjusting the degree of each contact between the feeding pad and the moistening pad during the operative cycle of the machine, including an oscillating shaft carrying the feeding pad, an arm fixed on said shaft, a rocker mounted on said shaft so that it can turn thereon, a spindle mounted in said arm so that it can rotate, said spindle being parallel to but spaced from said shaft, means for frictionally loading said spindle against rotation, a setting member fixed on said spindle whereby the spindle may be rotated, a pinion fixed on said spindle, said rocker having teeth engaged by said pinion, and means for rocking said rocker around the axis of said shaft.

3. A liquid feeding means including a stationary moistening pad, an oscillating feed pad arranged for intermittent contact with said moistening pad, and means for adjusting the degree of each contact between the feeding pad and the moistening pad during the operative cycle of the machine, including an oscillating shaft carrying the feeding pad, said shaft bein biased towards the position it occupies when the feeding and moistening pads are in contact, an arm fixed on said shaft, a rocker mounted on said shaft so that it can turn thereon, a spindle mounted in said arm so that it can rotate, said spindle being parallel to but spaced from said shaft, means for frictionally loading said spindle against rotation, a setting member fixed on said spindle whereby the spindle may be rotated, a pinion fixed on said spindle, said rocker having teeth engaged by said pinion, and means for rocking said rocker around the axis of said shaft.

4. A liquid feeding means including a stationary moistening pad, an oscillating feed pad arranged for intermittent contact with said moistening pad, and means for adjusting the degree of each contact between the feeding pad and the moistening pad during the operative cycle of the machine, including an oscillating shaft carrying the feeding pad, an arm fixed on said shaft, a rocker mounted on said shaft so that it can turn thereon, said arm and said rocker being disposed side by side with adjacent faces in contact, a spindle mounted in said arm so that it can rotate, said spindle being parallel to but spaced from said shaft, a setting member fixed on said spindle whereby the spindle may be rotated, a pinion fixed on said spindle, one end of said arm being of U form and embracing said pinion and providing a portion forming a second support for said spindle, said rocker having teeth engaged by said pinion, and means for rocking said rocker around the axis of said shaft.

5. A liquid feeding means including a stationary moistening pad, an oscillating feed pad arranged for intermittent contact with said moistening pad, and means for adjusting the degree of each contact between the feeding pad and the moistening pad during the operative cycle of the machine, including an oscillating shaft carrying the feeding pad, an arm fixed on said shaft, a rocker mounted on said shaft so that it can turn thereon, a spindle mounted in said arm so that it can rotate, said spindle being parallel to but spaced from said shaft, a serrated disc fixed on said spindle, a spring on said arm engaging said serrations for frictionally loading said spindle against rotation, a setting member fixed on said spindle whereby the spindle may be rotated, a pinion fixed on said spindle, said rocker having teeth engaged by said pinion, and means for rocking said rocker around the axis of said shaft.

6. A liquid feeding means including a stationary moistening pad, an oscillating feed pad arranged for intermittent contact with said moistening pad, and means for adjusting the degree of each contact between the feeding pad and the moistening pad during the operative cycle of the machine, including an oscillating shaft carrying the feeding pad, an arm fixed on said shaft, a rocker mounted on said shaft so that it can turn thereon, said arm and said rocker being disposed side by side with adjacent faces in contact, a spindle mounted in said arm so that it can rotate, said spindle being parallel to but spaced from said shaft, a setting member fixed on said spindle whereby the spindle may be rotated, a pinion fixed on said spindle, one end of said arm FRANK RONALD FORD.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,171,061 Ford Aug, 29, 1939 2,418,341 Ford Apr. 1, 1947 2,424,534 Ford July 22, 1947