US2832633A

US2832633A - Lifting device for coiled material

Info

Publication number: US2832633A
Application number: US440423A
Authority: US
Inventors: Richard E Compson
Original assignee: Individual
Current assignee: Individual
Priority date: 1954-06-30
Filing date: 1954-06-30
Publication date: 1958-04-29
Anticipated expiration: 1975-04-29

Description

April 29, 1958 R. E. COMPSON LIFTING DEVICE FOR COILED MATERIAL Filed June so, 1954 Sheets-Sheet 1 /o 63 /z E INVENTORQ RIC/646 0 A. C 0/14/ 6" O/\/ April 29, 1958 Filed June 30, 1954 R. E. COMPSON LIFTING DEVICE FOR COIL-ED MATERIAL 2 Sheets-Sheet 2 MM "L/(M ATTORA/[VS United States Patent 2,832,633 LlFriNG DEVICE FOR COILED MATERIAL Richard E. Compson, Roseville, Mich. Application June so, 1954, Serial No. 440,423 4 Claims. (Cl. 294-97 This invention relates to a device for handling stacked coiled material.

It is an object of this invention to provide a device of the type described which is simple in its construction and which is designed to be operated readily by a remotely located operator.

In the drawings:

Fig. 1 is a side elevational view of the lifting device of this invention, the device being shown in a collapsed condition inserted within a stack of coiled material.

Fig. 2 is an end view of the device in the position shown in Fig. 1.

Fig. 3 is a side elevational view of the device in the expanded condition wherein it engages with the bottom of the stack of coiled material.

Fig. 4 is a fragmentary detailed sectional view of the latch arrangement for holding the arms of the device in the collapsed condition.

The device of this invention generally includes a pair of levers and 12 each of which are in the form of a bell crank having a relatively short arm 14 and a relatively longer arm 16. The

arms

14 and 16 are formed integrally and are connected by a web portion 18.

Members

10 and 12 are pivotally connected together as by a bolt 20 and a nut 22 which passes through registering openings in the web portions 18.

Members

10 and 12 are preferably fashioned as heavy steel stampings. They may, if desired, be formed as steel castings or forgings, however. At their lower ends, the arms 16 are provided with lateral extensions 24 on which support plates 26 are welded or otherwise secured. The

members

10 and 12 are reversely positioned so that the arms 14 and the extensions 24 normally project in generally opposite directions.

The outer ends of arms 14 are provided with apertures 28 therein for connecting to the ends of these arms cables 30, which are connected at their opposite ends to a lifting device such as a crane or the like (not shown). An operating lever 32 is pivotally supported on

members

10 and 12 as by the bolt and

nut

20, 22 which pivotally connects the

members

10 and 12. Lever 32 is also fashioned as a bell crank and has arms 34 and 36 projecting from the

pivotal connection

20, 22. Arm 34 is provided with an aperture 38 at the free end thereof to which is attached a control cable 40. Cable 40 extends through suitable guides on the crane or other lifting mechanism to the control platform so that it can be actuated by the operator of the mechanism. The other arm 36 of lever 32 has a roller 41 mounted at the free end thereof. Roller 41 is arranged to rollably engage the substantially straight upper edge 43 of arm 14 on lever 10.

There is also provided a latch mechanism for locking the

members

10 and 12 in the collapsed position shown in Fig. 1. This latch mechanism comprises a bushing 42 which is secured as by cap screws 44 to the exposed face of member 10 at a point spaced above the pivot bolt 20. Bushing 42 has a bore 46 therein which, when the

levers

10 and 12 are in the collapsed condition shown ice in Fig. 1, is aligned registering openings 48 and the aligned aperture 48 in member 10, there is slidably arranged a locking pin 51 having a head 52 and a reduced shank portion 54. A spring 56 acting between head 52 and a shoulder 58 on bushing 42 normally urges the head 52 in a direction towards member 12 so.that' when the

openings

48 and 50 are aligned, head 52 is automatically projected by spring 56 into opening 50. A

may be lowered by the crane operator into the central opening 66 of the stacked material by lowering or ex tending the cables 30. When the device has been lowered to a position wherein the support plates 26 are disposed below the lower edges of the stacks 62, a man on the floor where the material 62 is stacked retracts locking pin 51 so that the head 52 is withdrawn from within open; ing 50. At this time, the cable 40"is slack and the

members

10 and 12 by reason of the lifting cables '30 are pivoted to the position shown in Fig. 3 wherein the extensions 24 and the support plates 26 underlie the bottom faces of the stack 62. The crane operator then pulls up on the cables 30 and the stacked material 62 is thus raised.

After the stacked material 62 is swung by means of this device to the desired location, cables 30 are lowered to position the stacked material 62 on another pair of supports similar to supports 64. After the stack 62 is firmly supported on the supports, the cables 30 are further lowered so that the plates 26 are moved downwardly out of engagement with the bottom face of the stack. In this condition, the arms 16 will tend to maintain their separated condition shown in Fig. 3. In order to retract the device from within the stacked coiled material, it is necessary to pivot the

members

10 and 12 to a position wherein the arms 16 generally overlie one another as shown in Fig. 1. This can be readily accomplished by the crane operator by simply pulling up on cable 40. When cable 40 is pulled upwardly, the operating lever 32 is rotated in a clockwise direction as viewed in Figs. 1 and 3, and the roller 41 at the free end of arm 36 presses downwardly on the upper edge 43 of arm 14 on member 10 and rotates member 10 in a clockwise direction about the bolt 20. This causes the

pivotal connection

20, 22 to shift upwardly, and both arms 16 pivot toward one another to the position shown in Fig. 1. When the arms 16 assume the position shown in Fig. 1, the plates 26 forming stops as shown,

openings

48 and 50 in

members

10 and 12 respectively will be aligned; and

spring 56 thereby causes the head 52 of locking pin 51 to be projected into the opening 50 thereby locking the

members

10 and 12 in the position shown inFig. 1. The crane operator can then lift the device from within the stack 62; and after centering it over another stack of coiled material, lower it into the position generally shown in Fig. 1.

Thus it will be seen that I have provided a device for lifting coiled material which is of verysimple construction. The device, however, is very rigid; and the shape of the

members

10 and 12 together with the provision of the operating lever 32 and the latch mechanism shown specifically in Fig. 4 enables the device to be used very conveniently and in a very simple manner for lifting coiled material.

. and 50 in

members

10 and 12 respectively. Within the bore 46 16 are pivoted towards each other I claim:

1. A device for lifting stacked coiled material of annular form comprising a pair of bell crank levers each having a pairof angularly related arms, said levers being reversely positioned and pivotally connected together adjacent the intersection of said arms whereby when one set of corresponding arms are juxtaposed, the other set of corresponding arms project in generally opposite directions, one pair of said corresponding arms being provided with lateral extensions at thefree ends thereof and the other pair of corresponding arms having means at the free ends thereof for securing lifting members threto, said levers being normally positioned with said arms provided withsaid lateral extensions in generally juxtaposed relation and an operating lever pivotally supported intermediate its ends at the pivotal connection between said first mentioned levers and having a roller at one of its free ends and means at its other free end for pivotally actuating the operating lever, one of said first mentioned levers having an edge portion on which said roller travels when said operating lever is pivotally actuated so as to pivotally actuate said one of said first mentioned levers when the operating lever is pivotally actuated.

2. A device for lifting stacked coiled material of anntilar form comprising a pair of hell crank levers each having generally perpendicular related arms, one of said arms being longer than the other, said levers being pivotally connected together adjacent the intersection between said arms and being reversely positioned relative to each other'such that when the longer arms of the two levers are in generally overlying position, the shorter arms of said levers project in generally opposite directions, the free ends of said shorter arms having lifting members connected thereto and the free ends of said longer arms having laterally extending foot portions thereon and including an operating lever on said device, said operating lever being pivoted on said device at said pivotal connection between said levers and having one free end portion engageable with one of said levers and another free end portion to which is attached an actuating member, said actuating member comprising a control cable.

3. The combination called for in claim 2 wherein said one free end of the operating lever is provided with a roller, said one of said first mentioned levers having an edge portion engaged by said roller.

4. The combination called for in claim 3 wherein said edge portionis fashioned on the shorter arm of the last mentioned lever.

Referenees Cited in the file of this patent UNITED STATES PATENTS Peters June 24, 1947