Material or article handling – Opposed shelf-type elevator and transporter
Patent
1983-06-29
1985-04-02
Valenza, Joseph E.
Material or article handling
Opposed shelf-type elevator and transporter
B62B 304, B62B 306
Patent
active
045084858
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a device for lifting articles particularly but not exclusively articles such as metallic drums of large capacity i.e. of the order of 200 liters.
According to the present invention there is provided a device for lifting an article, said device comprising a mobile frame, a pair of engagement members which, in use, engage the article to be lifted, and an actuator which is pivotally connected so said frame about a first axis, said engagement members being connected to said actuator for pivotal movement relative thereto about a second axis, said actuator being rotatable between first and second positions in which, in the first position, said engagement members are at a first level relative to the frame and said second axis is located at a first lateral position relative to said first axis, and, in the second position, said engagement members are at a second level, vertically higher than said first level, relative to the frame and said second axis is located on a second lateral position relative to said first axis, said second lateral position being on the opposite side of said second axis to the said first lateral position, said device including abutment means to restrain movement of said actuator beyond its second position, and wherein, in use, an article is supported by said engagement members and the weight thereof tends to rotate said actuator into engagement with said abutment means.
In use of the device the frame is brought up to the article, the engagement members engaged therewith and then the actuator is operated which causes elevation of the engagement members and consequently of the article. The lateral shifting of the members functions as an over-centre arrangement so that once the article has been elevated its weight is fully borne by the frame.
The invention will now be further described with reference to the accompanying drawings, in which:
FIG. 1 is a perspective view of a preferred form of the invention;
FIG. 1A illustrates upward and rearward movement of the hooks;
FIG. 2 illustrates diagrammatically how the apparatus of FIG. 1 can be used to lift a large capacity drum;
FIG. 3 is a plan view of part of the apparatus shown in FIG. 1;
FIG. 4 is a sectional view taken along the line 4--4 marked in FIG. 3;
FIG. 5 is a similar view to FIG. 4 but with the handle rotated downwardly;
FIG. 6 is a side perspective showing the apparatus lifting a drum, and
FIG. 7 illustrates a modified configuration of the hook members for use in the apparatus of the invention.
The apparatus illustrated in FIG. 1 is especially suited for lifting a large capacity drum 1, which preferably comprises a well known 44 gallon drum. Of course it could be dimensioned so as to be suitable with drums of other sizes. It comprises a mobile frame 2 having a forward pair of uprights 4 and a rear upright 6. The upper ends of the uprights are jointed by a generally U-shaped top support bar 8. The lower ends of the legs are interconnected by lower braces 10. The lower ends of the forward legs 4 are provided with fixed axis wheels 12 whereas the rear upright 6 is provided with a swivel mounted wheel 14.
The device includes a pair of opposed hook members 16 which are suspended from plates 18 which in turn are pivotally connected to the forward portions of the top bar 8. The plates 18 are interconnected by a generally U-shaped handle 20 which also serves as a lever to effect rotation of the plates 18 and consequential elevation of the hook members 16. In FIG. 1 the handle 20 is in an upright position in which it located in a plane inclined slightly forwardly relative to the vertical, it being stable in that position by engagement of the ends of the handle with the top support bar 8 as shown.
FIGS. 3 to 5 illustrate in more detail the preferred configuration of the plates 18 and hook members 16.
Referring firstly to FIG. 3 it will be seen that the plates 18 are pivotally connected to the bar 8 by means of threaded studs 23. The hook members 16 are mounted on the end of shafts 24 which are welded to the plates 18. Th
REFERENCES:
patent: 528011 (1894-10-01), McElfresh
patent: 1717377 (1929-06-01), Forry
patent: 1862299 (1932-06-01), Ciccone
patent: 2779494 (1957-01-01), Kikuchi
patent: 3378155 (1968-04-01), Steiner
Leary William
Mlinaric Jerry
Mummery Robert J.
Bucci David A.
Leary William
Mlinaric Jerry
Valenza Joseph E.
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