Presses – Binding – Binder applying
Reexamination Certificate
1999-02-26
2001-01-30
Gerrity, Stephen F. (Department: 3721)
Presses
Binding
Binder applying
C100S031000, C100S048000, C100S179000, C100S191000, C100S269080
Reexamination Certificate
active
06178881
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a waste bale press of predominantly horizontal construction, i.e., a bale press having a press plate which acts in the horizontal direction. The press is used for manufacturing bound bales of predominantly organic waste materials, such as paper, cardboard, wood boxes or other used packaging materials. The press includes a press shaft with a filling shaft in front of the press shaft and a drive portion arranged in front of the filling shaft. The drive portion includes two hydraulic cylinders which are arranged so as to intersect in the basic position thereof and whose free piston rod ends act on the press plate.
2. Description of the Related Art
For the purpose of reducing the structural length of presses of the above-described type, U.S. Pat. No. 4,041,856 discloses in connection with a vertically acting press to arrange in the drive portion on the side of the head two intersecting hydraulic cylinders which are slightly vertically inclined in the basic position thereof, wherein the free piston rod ends of the hydraulic cylinders are connected in an articulated manner to the press plate.
It is apparent that such a cylinder arrangement is capable of applying only relatively small pressing forces onto the material to be compacted; this is because, as a result of the shallow cylinder arrangement, the force components acting on the side walls of the press shaft are over the greatest portion of the pressing stroke greater than the actual pressing forces acting in the vertical direction.
SUMMARY OF THE INVENTION
Therefore, it is the primary object of the present invention, utilizing the known teaching in connection predominantly with bale presses having a horizontal movement of the press plate, to provide a cylinder arrangement in which the force components directed against the side walls of the press shaft are kept as small as possible and, thus, the actual pressing force is available to a high extent already in the initial stage of the pressing procedure.
In accordance with the present invention, the ends of the hydraulic cylinders are connected in an articulated manner on brackets or the like located laterally of the press housing outside of the parallel limiting walls of the press housing in the most rearward part of the drive portion.
The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of the disclosure. For a better understanding of the invention, its operating advantages, specific objects attained by its use, reference should be had to the drawing and descriptive matter in which there are illustrated and described preferred embodiments of the invention.
REFERENCES:
patent: 3211309 (1965-10-01), Shubin
patent: 3861298 (1975-01-01), Melos
patent: 4041856 (1977-08-01), Fox
patent: 4544320 (1985-10-01), Haines
patent: 4877366 (1989-10-01), De Filippi
patent: 5064332 (1991-11-01), Edelhoff et al.
patent: 5178062 (1993-01-01), Spiers
patent: 5203669 (1993-04-01), Klossek et al.
Gerrity Stephen F.
Kueffner Friedrich
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