Material or article handling – With weighing
Patent
1986-07-11
1988-09-20
Spar, Robert J.
Material or article handling
With weighing
40511, 40513, 221151, 221197, 221239, 221246, 271 31, G09F 1130
Patent
active
047721685
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a device for the cyclic rearrangement of a pile of rectangular or square sheets, especially photographic prints (pictures), with a first frame part and a second frame part that is movable back and forth relative to the first. The frame parts in the pushed together state enclose the pile of sheets and contain means which, when the frame parts are moved away from one another, remove a sheet from one end of the pile and, when the frame parts are moved back together again, put the sheet back on the other end of the pile. Here, and in the following, the words "sheet" and "picture" are used synonymously.
Such devices, occasionally called "picture changers", are known from U.S. Pat. Nos. 4,238,898, 4,238,899, 4,241,528, 4,241,529, 4,245,417, 4,259,802 and 4,376,348. There is also provided in the known picture changers a means for de-activating the changeover function by making one of the means provided for the changeover function inoperative, for example a retentive coating drive acting on the exposed area of the sheet to be separated, which drive can be removed from engagement with the pile manually.
To do this, space must be created in the frame parts in the direction of the thickness of the pile, which is undesirable for aesthetic reasons.
Basically, the elements participating in the changeover function comprise a separating means, which defines a through-gap for the sheet to be separated, a feeding means, which feeds sheets to the separating means, a retaining means for holding the separated sheet in the relevant frame part, and a guide means which presents the separated sheet for reintroduction onto the top of the pile or the bottom of the pile.
According to the above arrangements, therefore, the feeding means and, depending on the design, also the retaining means, are de-activated, so that the entire pile can be removed from the device, preferably by means of the frame part accessible after the frame parts have been moved away from one another.
In the course of this, relatively large forces are transmitted by a control mechanism, which is accessible from the outside, since the bias of a powerful spring bias system must be overcome. The components are given appropriate dimensions for this task. The problem of the invention is to render inoperative the changeover function by means of relatively small components, which can be manufactured at a correspondingly favourable price and which it is easier to find room for in the device. Claim 1 defines the solution according to the invention which comprises blocking the through-gap in order to render inoperative the changeover function. When feeding the sheets to the separating means care is taken that, when the separating means is blocked, the sheets can be released as soon as an adequately large force is exerted against the direction of action of the feeding means and removed as a complete pile from the exposed frame part. The feeding means may in this case be designed, for example, as a contact face acting on the sheet edge which, when appropriate force is exerted on the sheet, slides off the sheet edge.
Further advantages and developments of the invention are disclosed in the following description and in the claims.
The invention is described in detail hereinafter by way of examples of execution illustrated in the accompanying drawings.
FIG. 1 shown in plan view and partially cut-away a picture changer with the slider member partially withdrawn.
FIGS. 2 to 10 shows sections and details of the picture changer of FIG. 1.
FIGS. 11 to 16 show an additional embodiment of a picture changer.
FIGS. 17 to 20 show further examples of execution of means for the complete removal of the pile of pictures.
The picture changer shown in FIGS. 1 to 10 comprises as first frame member a housing 12 and as second frame member a slider member 14 for accommodating a pile of pictures, wherein the slider member 14 can be pulled out of the housing 12 for a distance limited by stop members 16 on the slider member and complementary stop members 18 on the housing and
REFERENCES:
patent: 4238898 (1980-12-01), Ackeret
patent: 4241528 (1980-12-01), Ackeret
patent: 4241529 (1980-12-01), Baur
patent: 4259802 (1981-04-01), Ackeret
patent: 4376348 (1983-03-01), Ackeret
Jackson Robert R.
Krizek Janice
Licinvest AG
Spar Robert J.
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