Claims
- 1. In a printing apparatus having rotatable bearer members, a bearer wiper assembly comprising:
- (a) a support means,
- (b) an extensible arm having opposed ends one of said ends being attached to the support means,
- (c) a wiper means removably attached to the extensible arm, said wiper means including a wiper pad having a direct bearer-engageable portion provided with a plurality of collection apertures for collecting foreign matter and
- (d) the wiper pad being generally ell-shaped having a forward bearer-engageable portion and a rearward mounting portion and means for mounting said mounting portion to the extensible arm.
- 2. A wiper assembly as defined in claim 1 in which:
- (d) the wiper pad is of felt material, the bearer-engageable portion is of substantially uniform thickness and the collection apertures extend completely through said bearer engageable portion.
- 3. A wiper assembly as defined in claim 2, in which:
- (e) the wiper pad mounting means includes a flexible ell-shaped backing plate conforming generally to the configuration of the wiper pad, a clamping frame including a cross member connected to the arm and a clamping screw operatively engageable with the cross member for moving said cross member into clamping relation with the wiper pad and backing plate.
- 4. A wiper assembly as defined in claim 3, in which:
- (f) the wiper pad forward and rearward portions are formed from a single pad of substantially uniform thickness, said pad having a transverse notch and including means for stiffening the pad so that it conforms to the desired ell-shaped configuration.
- 5. A wiper assembly as defined in claim 4, in which:
- (g) the stiffening means is provided by glue spots.
- 6. In a printing apparatus having rotatable bearer members, a wiper assembly comprising:
- (a) a support means,
- (b) a cylinder means having an extensible piston means mounted therein, one of said means being mounted to the support means, and
- (c) a bearer-engageable wiper means removably attached to the other of said means,
- (e) the wiper means including a generally ell-shaped felt wiper pad having a forward bearer-engageable portion including a plurality of collection apertures for collecting foreign matter and a rearward mounting portion and means for mounting the mounting portion to said other of said cylinder means and piston means, the wiper pad mounting means including a flexible ell-shaped backing plate conforming generally to the configuration of the wiper pad and a clamping frame and clamping screw attached to said other of said cylinder means and piston means for clamping the backing plate and the wiper pad mounting portion to said means.
- 7. A wiper assembly as defined in claim 6, in which:
- (f) the collection apertures are of a size and number to provide as aperture ar-a of substantially fourteen percent (14%) of the area of said bearer engageable portion.
Parent Case Info
This is a continuation of Ser. No. 827,755, filed on Feb. 7, 1986, now U.S. Pat. No. 4,704,964.
US Referenced Citations (26)
Foreign Referenced Citations (2)
Number |
Date |
Country |
2925201 |
Jan 1981 |
DEX |
1342436 |
Sep 1963 |
FRX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
827755 |
Feb 1986 |
|