Scissors chute

Details Scissors chute Scissors chute

2001-01-05

2002-09-24

Hess, Douglas (Department: 3651)

Conveyors, chutes, skids, guides, and ways

Chutes

C193S00200R, C198S418600

Reexamination Certificate

active

06454076

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a scissors chute and more particularly pertains to guiding the downward falling movement of conveyed articles.
2. Description of the Prior Art
The use of conveyors of known designs and configurations is known in the prior art. More specifically, conveyors of known designs and configurations previously devised and utilized for the purpose of conveying articles through known methods and apparatuses are known to consist basically of familiar, expected, and obvious structural configurations, notwithstanding the myriad of designs encompassed by the crowded prior art which has been developed for the fulfillment of countless objectives and requirements.
By way of example, U.S. Pat. No. 4,228,635 to Altenpohl et al. issued Oct. 21, 1980 discloses a Poultry bagging system. U.S. Pat. No. 3,867,807 to Doucette issued Feb. 25, 1975 discloses a carrier applicator machine for bottles. U.S. Pat. No. 4,293,981 to Smith issued Oct. 13, 1981 discloses a crab butchering machine. Lastly, U.S. Pat. No. 5,207,311 to Terai issued May 4, 1993 discloses a method and apparatus for automatically feeding articles in aligned conditions to packing machine.
While these devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not describe a scissors chute that allows guiding the downward falling movement of conveyed articles.
In this respect, the scissors chute according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in doing so provides an apparatus primarily developed for the purpose of guiding the downward falling movement of conveyed articles.
Therefore, it can be appreciated that there exists a continuing need for a new and improved scissors chute which can be used for guiding the downward falling movement of conveyed articles. In this regard, the present invention substantially fulfills this need.
SUMMARY OF THE INVENTION
In view of the foregoing disadvantages inherent in the known types of conveyors of known designs and configurations now present in the prior art, the present invention provides an improved scissors chute. As such, the general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new and improved scissors chute and method which has all the advantages of the prior art and none of the disadvantages.
To attain this, the present invention essentially comprises a scissors chute. First provided as part of the system is a housing. The housing has a plurality of horizontally extending lower support arms and a plurality horizontally extending upper support arms spaced above the lower support arms and forming a plurality of guide sets. The guide sets are laterally spaced from each other for the guiding of the downward falling movement of conveyed articles there between along a vertical path of travel. Next provided are an upper pair of crossed scissor fingers. The upper fingers are located immediately beneath each upper support arm. Also provided are a lower pair of crossed scissor fingers. The lower fingers are located immediately above each lower support arm. Each guide set has a spacer between the upper pair of scissor fingers and the lower pair of scissor fingers. A vertically oriented primary pivot shaft is next provided. The primary pivot shaft is secured between each upper support arm and its associated lower support arm and through each of the scissor fingers for rotation about a common first axis for each guide set. Four vertically disposed guide plates are provided in each guide set. Of the four guide plates two are interior guide plates and two are exterior guide plates. The guide plates also have second pivot shafts with second pivot axles. The guide plates are pivotally coupled to an associated end of one upper scissor fingers and one lower scissor finger for rotation about second axes. Each guide plate has a radially inwardly oriented extension with a slot and a fixed pin extending downwardly from an upper support arm into an associated slot. In this manner rotational movement of the scissor fingers will cause a concurrent compound rotation of each guide plate about the first axis and also about the second axis. Next provided are a pair of drive links for each guide set. Each drive link has an exterior end pivotally coupled to an adjacent second pivot shaft and an interior end coupled to a common drive pin. Lastly, a driving subassembly is provided. The driving subassembly includes a common drive bar coupled to the drive pins at spaced laterally offset locations. A common linear actuator concurrently moves the common drive bar, drive pins, scissor fingers and guide plates between an inoperative orientation and an operative orientation. In the inoperative orientation for each guide set the interior plates are also in proximity to each other and the exterior plates are in proximity to each other. In the operative orientation for each guide set the interior plates are also widely spaced from each other and the exterior plates are widely spaced from each other. During operation and use the guide plates of adjacent guide sets are widely spaced with respect to each other to create a laterally larger path of travel for receiving articles to be dropped there through when in the inoperative orientation. During operation and use the guide plates of adjacent guide sets are closely spaced with respect to each other to create a laterally smaller path of travel with the guide plates in a generally rectilinear configuration forming a funnel to guide articles being dropped and falling there through when in the operative orientation.
There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood and in order that the present contribution to the art may be better appreciated. There are, of course, additional features of the invention that will be described hereinafter and which will form the subject matter of the claims attached.
In this respect, before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of descriptions and should not be regarded as limiting.
As such, those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention.
It is therefore an object of the present invention to provide a new and improved scissors chute which has all of the advantages of the prior art conveyors of known designs and configurations and none of the disadvantages.
It is another object of the present invention to provide a new and improved scissors chute which may be easily and efficiently manufactured and marketed.
It is further object of the present invention to provide a new and improved scissors chute which is of durable and reliable constructions.
An even further object of the present invention is to provide a new and improved scissors chute which is susceptible of a low cost of manufacture with regard to both materials and labor, and which accordingly is then susceptible of low prices of sale to the consuming public, thereby making such scissors chute economically available to the buying public.
Even still another object of the present invention is to provide

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