Claims
- 1. In a printing apparatus having upper and lower printing rolls for which rotatable bearer members are provided at the respective ends thereof, a bearer wiper assembly comprising:
- (a) guard means extending longitudinally of the rolls in a spaced relation thereto at the point of contact between the rolls to prevent an operator's fingers, and other articles from being drawn therebetween;
- (b) a first ram means attached to one end of the guard means and a second ram means attached to the opposite end thereof, each ram means being located adjacent an associated bearer member on the rolls and each ram means including a piston means and a cylinder means, one of said means being connected to the guard means and the other of said means being movable relative to said guard means;
- (c) bearer-engageable wiper means attached to said movable means; and
- (d) actuation means for the ram means to move the wiper means into and out of engagement with the bearers.
- 2. The assembly of claim 1, in which:
- (e) the piston means is connected to the guard means and the cylinder means is movable relative to said guard means and said wiper means is attached to said cylinder means.
- 3. The assembly of claim 2 wherein:
- (f) each wiper means includes a first removable wiper pad for engaging the bearer member on the upper roll and a second removable wiper pad for engaging the bearer member on the lower roll.
- 4. The assembly of claim 3 wherein:
- (g) the assembly further includes a generally U-shaped wiper pad mounting bracket affixed to each cylinder means.
- 5. The assembly of claim 4, wherein:
- (h) the wiper means includes clamping means for securing a wiper pad to each arm of the mounting bracket.
- 6. The assembly of claim 1, wherein:
- (e) said first and second ram means are pneumatically operated and are connected by a flexible conduit for simultaneous operation.
- 7. The assembly of claim 6, in which:
- (f) the guard means includes a finger bar formed from a generally square bar having a forward corner directed between said rolls, said corner being cut away and grooved to provide an elongate recess receiving at least a portion of said flexible conduit.
- 8. The assembly of claim 7, wherein:
- (g) the finger bar includes transverse passages therethrough at each end communicating with the ends of said elongate recess and receiving the flexible conduit connected to said first and second ram means.
- 9. The assembly of claim 6, wherein:
- (f) support means is provided including first and second side supports respectively positioned outboard of the ends of the rolls, each support having a pocket for receiving an end of the finger bar, and
- (g) first and second pins are secured to the respective ends of the finger bar and extend longitudinally, outwardly therefrom with the outer ends of the pins being respectively received in the pockets in the side supports, one of said pins being spring-loaded.
- 10. The assembly of claim 9 wherein:
- (h) the finger bar includes handle means attached to the bar intermediate its length for installing and removing the finger bar and wiper means.
- 11. The assembly of claim 1, wherein:
- (e) the guard means includes a removable finger bar.
Parent Case Info
This is a c-i-p of Ser. No. 118,659 filed on Nov. 9, 1987, which is a continuation of Ser. No. 827,755 filed Feb. 7, 1986 now U.S. Pat. No. 4,704,964 issued Nov. 10, 1987.
US Referenced Citations (4)
Continuations (1)
|
Number |
Date |
Country |
Parent |
827755 |
Feb 1986 |
|
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
118659 |
Nov 1987 |
|