Abstract:
This invention relates to an improvement in an apparatus for developing printing plates comprising pairs of upper and lower rolls adapted to convey said printing plates, bearing means at each end of each upper roll, and toggle lever means adapted to raise and lower said upper rolls with respect to said lower rolls, the improvement comprising a plurality of pivotal forked head means each having an upper and lower arm adapted to engage each of said bearing means, swivel shaft means supporting said forked head means and being parallel to the conveying direction of said printing plates, said upper arms of said forked head means being adapted to exert pressure on the top of said bearing means when said bearing means is in a lowered position, and said lower arms of said forked head means being adapted to support said bearing means in a raised position, means connecting one end of a toggle lever means to each forked head means, and means connecting the other end of said toggle lever means to a rotatable control shaft means which is parallel to the conveying direction of said printing plates.
Abstract:
A protective cover for a machine bed comprises a plurality of cover boxes telescopically slidable relative to one another and a locking mechanism comprising two pawls by means of which the smallest cover box may be locked to the end of the machine bed or to the largest cover box. The locking mechanism is distinguished by a simple structure and lightness in weight and may be retrofitted to already existing covers.
Abstract:
The invention relates to a telescopic cover composed of multiple boxes in which three guide elements are provided for guiding two adjacent boxes in the region of each side wall, and of these at least one guide element extends over the length of the appertaining box by a specific dimension in the extended state of the two boxes and furthermore at least one of the three guide elements is releasable from the appertaining box. In this way a small compressed dimension of the telescopic cover can be produced even with very wide boxes and at the same time a self-supporting construction can be achieved in a simple manner which saves on material.
Abstract:
The invention relates to a scraper arrangement for attachment to at least one of at least two machine parts which are movable relative to one other, particularly for protection of guideways in machine tools. In this case a scraper strip made from elastically deformable material is replaceably retained on a rigid carrier strip which for its part is releasably connected to a machine part. With a view to a reliable attachment and quick replacement of carrier strip and scraper strip, at least one approximately strip-shaped intermediate carrier can be firmly attached to one machine part and with the aid of at least one C-shaped clamp can be replaceably fixed on a front end edge region of the machine part.
Abstract:
The invention relates to a telescopic cover with support rollers which are mounted so as to be rotatable about a first axis which extends at right angles to the direction of travel and capable of limited pivotal movement about a second axis which extends in the direction of travel through the center of the support roller. Such a telescopic cover is distinguished by statically satisfactory mounting of the support rollers even when transverse forces occur.