Helically guided endless belt conveyor
First Claim
1. A helically guided endless belt conveyor including in combination, a conveyor belt having a helical portion made up of a number of spires, a plurality of T-shaped struts adjacent to the inner edge of said belt portion, each of said struts comprising a vertical bar, the lower end of which engages the upper end of a strut of the next spire below to determine the spire pitch, a helical guide means, members adjacent to the outer edge of said belt resting on said helical guide means, a central driving drum disposed within said helical portion, and a plurality of vertical grooves in said drum, each of said struts comprising a crossbar having an inwardly extending finger to provide a plurality of fingers for selectively engaging in said grooves.
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Abstract
The present invention relates to a helically guided endless belt conveyor constituted of a conveyor belt comprising on the inside struts to determine the pitch of the spires and on the outside members resting on helical guide means.
Said belt is provided on its inside edge with a series of fingers which are selectively engaged in vertical grooves of a central driving drum so as to guide the belt along an upward or downward helical course.
The invention finds an application in the production of helical conveyors.
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Citations
10 Claims
- 1. A helically guided endless belt conveyor including in combination, a conveyor belt having a helical portion made up of a number of spires, a plurality of T-shaped struts adjacent to the inner edge of said belt portion, each of said struts comprising a vertical bar, the lower end of which engages the upper end of a strut of the next spire below to determine the spire pitch, a helical guide means, members adjacent to the outer edge of said belt resting on said helical guide means, a central driving drum disposed within said helical portion, and a plurality of vertical grooves in said drum, each of said struts comprising a crossbar having an inwardly extending finger to provide a plurality of fingers for selectively engaging in said grooves.
Specification