发明名称 |
Sheet-handling apparatus |
摘要 |
A device for holding down sheets which are stacked on a support has a vertical cylinder mounted above the support and provided with a piston and a piston rod extending from the piston through and to the outside of the cylinder where it carries a sheet-engaging member which exerts pressure on sheets resting on the support. A pair of conduits communicates with the cylinder chambers above and below the piston and a valve is provided which can either connect both conduits with a channel supplying compressed air or which can connect the conduit for the lower chamber with a suction channel. The positive or negative pressure in the respective conduits can be regulated.
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申请公布号 |
US4089518(A) |
申请公布日期 |
1978.05.16 |
申请号 |
US19770805392 |
申请日期 |
1977.06.10 |
申请人 |
VEB POLYGRAPH LEIPZIG KOMBINAT FUR POLYGRAPHISCHE MASCHINEN UND AUSRUSTUNGEN |
发明人 |
VOLLRATH, KARL-HANS |
分类号 |
B65H3/54;(IPC1-7):B65H3/34 |
主分类号 |
B65H3/54 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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