US2699913A

US2699913A - Lifting device

Info

Publication number: US2699913A
Application number: US179921A
Authority: US
Inventors: Nebeling Fritz
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-11-05
Filing date: 1950-08-17
Publication date: 1955-01-18
Anticipated expiration: 1972-01-18

Description

Jan.

INVENTOR FR/ TZ NEBEL ING ATTORNEYS United States Patent O 2,699,913 iLIFTINc.: DEVICE Fritz Nebeling, Remscheid, Germany Application August 17, 1950, Serial No. 179,921

Claims priority, application Germany November 5, 1949 8 Claims. (Cl. 248-143) This invention relates to new and useful improvements in lifting device. r

One object of the invention comprises an improved lifting device and particularly for the handling of substantially cylindrical objects.

Another object of the invention is a lifting device for containers and particularly drums from which liquid contents are to be dispensed. f

The foregoing and still further objects of the invention will be apparent from the following description read in conjunction with the drawings in which:

Fig. 1 is a diagrammatic representation showing the most essential elements of an embodiment constructed in accordance with the invention;

Fig. 2 represents a front view of a preferred construction in accordance with the invention;

Fig. 3 represents a diagrammatic illustration of a lifting procedure involved in the practice of the invention; and

Fig. 4 is an enlarged perspective View of a construction in accordance with the invention showing a drum in its lifted position.

As illustrated in the drawings, the member 1 of the lifting device which preferably defines a major arc, the lifting and lowering member 2 and the floor support 3 all as illustrated in Fig. 2 substantially correspond to the diagrammatic representation of Fig. l. As there shown, the center, O, of the circle 1 is connected'by the radius 4 to point 5 located on the periphery of the circle 1. This point 5 corresponds approximately in Fig. 2 to the upper downwardly directed edge member 5. Center O of circle 1 is connected to point 7 by li'ne 6. This point 7 of Fig. l is approximately located in Fig. 2 on the lower part of the floor support. The height differential determined by point 7 defines the lifting height of which the device is capable.

The lifting and lowering member 2 extends between points 5 and points 7 and substantially corresponds to the spiral 8 illustrated in Fig. l. This spiral 8 commences in point 9 and intersects circle 1 in point 5 extending to point 7. In the practical construction of the lifting and lowering member 2, however, only that portion of the curve of spiral 8 is considered which substantially extends between points 5 and 7.

The lifting and lowering member 2 substantially terminates in the upper substantially downwardly directed edge member 5 and harmoniously extends at point 7 into the substantially horizontal lower Hoor support member.

Point 10 (Fig. l) approximates in the illustration of Fig. 2 the lower upwardly directed edge member 10. There is thus defined between points 5 and 10 substantially a major arc, with points 5 and 10 substantially constituting the termini of the arc. The spacing between points or edge members 5 and 10 depends in each case upon the particular size of the device. This spacing, however, should be preferably so dimensioned that for instance for cylindrical objects, such as drums, paper rolls or similar articles, the object to be lifted cannot pass through this opening though at the same time permitting the device to be moved over the object to be lifted while the same rests on the oor as will be more fully explained hereafter.

The inner runner or member 1 is provided with rollers 11. In the illustration shown these are secured adjacent each side of the lowest portion of the arc member 1 relative the floor support and will thus furnish an object-support portion of the runner member upon which,

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for instance, a cylindrical object and particularly a drum may rest and may be easily rotated around its axis. This permits the easy rotation of for instance a drum into and out of its bung hole discharging position.

Floor rollers 12 are provided on the floor support member. Only one such floor roller is shown in the illustration though preferably two such rollers are provided, one adjacent each side of the device. Also, two handles 13 (only one shown in the illustration) are provided and preferably positioned for retractable projection relative the peripheral plane defined by the outer runners. The handles are adjustable in the direction of arrow 14 into position at which they will retract relative the periphery of the lifting and lowering members '2 in the rolling contact of these with a fioor when-lifting or lowering an object with the device. The handles are primarily used and intended when the device is being earted by the way of the iioor rollers 12.

ln the practical operation of the device in accordance with the Yinvention as for instance illustrated in Fig. 3, the arcuate inner runner members 1 are for instance moved or shoved over one end of, for example, a drum 15 resting on the floor. After the inner runners 1 are placed in appropriately balanced position over the drum mantel, the device is moved in the direction ofthe arrow 16 rolling the same over the outer runners 2 until the device assumes the substantially upright position with the floor support resting on the ground. In this position, as illustrated in Fig. 4, the drum rests inthe device in an elevated position and may be easily emptied. Drum 15 may be for example turned by 'way of the Arollers 11 so as to discharge its contents through the opened bung hole 17 in for example a suitable container 18.' By simple rotation of the drum in the opposite direction the bung hole may be again lifted into its non-discharging position. If it is desired after emptying the drum or at any other time to again lower the drum to the fioor, it is only necessary to reverse the above-described operation and turn the device in the opposite direction to that illustrated by arrow 16 in Fig. 3. Once the drum again rests on the floor, the device may be slipped off by withdrawing the same in a direction longitudinal to the drum axis.

As is thus apparent from the foregoing, the lifting device in accordance with the invention essentially comprises first means defining a floor support having a front and rear end, second means defining substantially inwardly curving inner runner means above and supportingly secured to said oor support in spaced relation thereto and including a lower object-support portion above said floor support and defining an upper and therefrom spaced apart lower terminus on the same side as said front end, and third means defining outer runner means extending spirally from said floor support rear end in substantially overlying relation to said inner runner means, to substantially said upper terminus, said second and third means respectively defining first and second curved planes cross-sectionally intersecting at a substantially acute angle.

Within a preferred embodiment of the invention, however, and particularly insofar as the same is applicable to the lifting and lowering and otherwise handling of substantially cylindrical objects and especially drums, the inner runner means define between the termini thereof a curved plane the cross-section of which substantially defines a major arc, preferably all lines within the planes respectively defined by the inner and outer runners, and which lines are substantially normal to these runners, being substantially parallel to each other. When using individual runners for the inner and outer runners within the preferred construction in accordance with the invention it is of advantage to provide each pair of arcuate and spiral runners substantially within a plane which is substantially normal to the each other overlying planes defined by inner and outer runners respectively. It is also for best results desirable, and so illustrated in the drawings, that the spirally extending outer runners cornmence at or near the lowest part of the rear end of the floor support and beginning thereat with a substantially fiat curve.

The device in accordance with this invention permits of particularly easy construction and within the preferred embodiment of the invention I find it of Vadvantage to use metal stock, and particularly tubular metal stock, for the construction of the device. In this manner, the device as for instance illustrated in Fig. 4 may consist of at least two blanks of metal stock and preferably tubular metal stock, each blank essentially including a oor support, an inner runner above said iloor support and dening a major arc having its termini on one side of said blank, support members securing said inner runner to said floor support in spaced relation thereto, and an outer runner extending spirally from about the lowest part of said oor support, at the other side of said blank, beginning with a substantially at curve and ending at the upper arc terminus of said inner runner in substantially overlying relation thereto and apexing therewith at a substantially acute angle. These blanks may then be assembled in substantially congruous position to each other as for instance by way of the tubular connections 19. It is then best to so select the vspacing between the two blanks forming the sides of the device that the same corresponds to about one-third of the axial length of the object to be lifted.

Aside from the relative ease with which objects may be lifted from the floor by means of the device in accordance with the invention, the same prevents the dropping of the object during the lifting or the lowering thereof and thus a possible damage thereto. This is particularly advantageous in connection with the useof the device for the lifting and lowering of steel drums as they are, for instance, used in connection with oil drums, asphalt drums, etc. Even when lowering the empty drums the workmen are compelled by the use of this device to bring the same gradually onto the floor and thus avoid denting thereof.

I claim:

l. A lifting device comprising first means defining a floor support with spaced apart side planes having a front and rear end, second means defining substantially inwardly curving inner runner means above and supportingly secured to said floor support in spaced relation thereto and including a lower object-support portion above said iloor support and defining an upper and therefrom spaced apart lower terminus on the same side as said front end, said second means having a greater maximum diameter than the distance between said termini and third means defining outer runner means extending spirally from said floor support rear end in substantially overlying relation to said inner runner means, to substantially said upper terminus, said second and third means respectively defining an inner and outer curved profile joining at a substantially acute angle.

2. A lifting device according to claim l in which the cross-section of said second means between said termini substantially defines a major arc.

3. A lifting device according to claim 2 in which the space dened by and substantially Within said second means is substantially open on at least one end thereof to permit substantially unobstructed insertion into said space of an object to be lifted.

4. A lifting device according to claim 3 in which said second means define at least two substantially parallel inner-surface guide runners, in which said third means define at least two substantially parallel outer surface runners, in Which all lines within said inner and outer profile which are normal to their runners are substantially parallel to each other.

5. A lifting device comprising at least two substantially parallel positioned side members of substantially congruous configuration to each other and each including a floor support member having a front and rear end, an inner runner positioned over said floor support and secured to the same in spaced relation thereto and curving to substantially define a major arc with its termini above said front end and an outer runner extending spirally from said rear end to the upper arc terminus of lsaid inner runner in substantially overlying relation thereto and forming an apex therewith at a substantially acute angle, and means for securing said side members in spaced, substantially parallel and symmetric position to each other.

6. A lifting device according to claim 5 in which each of said inner runners is provided substantially adjacent each side of the lowest portion of said arc above said floor support with at least one roller.

7. A lifting device according to claim 5 in which said oor support is provided with iloor rollers.

8. A lifting device according to claim 7 in which at least one retractable handle is secured to said device and positioned for projection relative the profile defined by the outer runners.

References Cited in the file of this patent UNITED STATES PATENTS 1,933,382 Monroe Oct. 3l, 1933 2,036,791 Bretschger Apr. 7, 1936 2,418,503 Fox Apr. 8, 1947 2,439,581 Robins Apr. 13, 1948