Conveyors: power-driven – Conveyor section – Reciprocating conveying surface
Patent
1987-05-27
1988-12-27
Valenza, Joseph E.
Conveyors: power-driven
Conveyor section
Reciprocating conveying surface
B65G 2500
Patent
active
047934727
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention concerns a conveyor for objects suspended from hangers, which consists of a cross-sectionally U-shaped stationary means having an upwardly facing opening and a rod-shaped member reciprocable therein by an operating mechanism. The upper edge of the rod-shaped member is adapted to be lifted above the opening of the stationary means by coupling means upon movement in the forward direction and to be lowered below the opening upon movement in the rearward direction.
Such a conveyor is known from the U.S. Patent Specification 2,057,367.
SUMMARY OF THE INVENTION
The object of the present invention is to provide such a conveyor which has a simple structure and is easy to erect.
This object is achieved according to the invention in that the the coupling means of the conveyor consists of U-shaped slide members having an upwardly facing opening which are slidable in the longitudinal direction of the stationary means upon overcoming frictional forces. The slide members accommodate the movable rod-shaped member and have tracks or faces inclined with respect to the direction of movement of the rod-shaped member to cooperate with projections or rollers. These tracks or inclined faces are shorter than the stroke of the rod-shaped member during its reciprocating movement.
In use, the hangers are suspended from the conveyor so that the hook of the hanger is positioned around the upper edges of the U-shaped stationary means. When the rod-shaped member is moved forwardly, its upper edge rises above the upper edges of the stationary means and lifts and therefore carries the hangers along in the forward direction. When the rod-shaped member is moved rearwardly, its lower edge is lowered below the lower edges of the stationary means so that the hanger remains thereon and is not carried along in the rearward direction. Consequently, the hangers are carried along at a speed which is essentially proportional to the frequency of the reciprocating movement and the stroke of this movement.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be described more fully below with reference to the drawings, in which:
FIG. 1 shows the conveyor of the invention, as seen from the side in section along the line 1--1 in FIG. 2,
FIG. 2 is a cross-section along the line 2--2 in FIG. 1,
FIG. 3a is a schematic and lateral view of a second embodiment of the invention during a rearward movement of a rod-shaped member shown in the figure,
FIG. 3b shows the same as FIG. 3a, seen from above,
FIG. 3c is a vertical cross-section of the rod-shaped member of FIGS. 3a and 3b with a wheel journalled in it,
FIG. 3d shows the same as FIG. 3a, but during a forward movement of the rod-shaped member,
FIG. 4a is a schematic view of a third embodiment of the invention during a rearward movement of a rod-shaped member shown in the figure,
FIG. 4b shows the same as FIG. 4a, seen from above,
FIG. 4c shows the same as FIG. 4a, but during a forward movement of the rod-shaped member, and
FIG. 4d is an enlarged view of the set of rollers of the embodiment shown in FIGS. 4a to 4c, with a shaft interconnecting the rollers.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
One end of a conveyor 1 of the invention, very long in principle, is shown in FIG. 1 of the drawing.
The conveyor shown in the drawing consists of a stationary cross-sectionally U-shaped rail 2, which is secured to a suspension device (not shown) e.g. by means of screws 3.
Within the U-shaped rail 2 there is provided a plurality of longitudinally evenly spaced slide members 4, which preferably are made of plastic and which can be displaced in the longitudinal direction of the U-shaped rail 2 when overcoming a certain friction.
The slide members 4 are likewise U-shaped, as shown, and form a mount for a rod-shaped member or a rod 5 of flat iron or optionally plastic, which can easily slide in the slide members 4, and which has a length corresponding to that of the rail 2.
The rod 5 has, on both sides thereof, longitudinally evenly spaced projections 6 with r
REFERENCES:
patent: 2057367 (1936-10-01), Cone
patent: 2788885 (1957-04-01), Begent
patent: 3084787 (1963-04-01), Moseley
patent: 3086642 (1963-04-01), Schwarz
patent: 3420358 (1969-01-01), Iversen
patent: 3451532 (1969-06-01), Manterfield
patent: 3581880 (1971-06-01), Iversen
patent: 3735852 (1973-05-01), O'Keefe
patent: 4344363 (1982-08-01), Veith
patent: 4655141 (1987-04-01), Gillson
ITS-Intern Transport System A/S
Valenza Joseph E.
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