US1729330A

US1729330A - Grappling device for merchandise

Info

Publication number: US1729330A
Application number: US287978A
Authority: US
Inventors: Russel S Dart
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-06-25
Filing date: 1928-06-25
Publication date: 1929-09-24
Anticipated expiration: 1946-09-24

Description

Sept. 24, 1929. R. s. DART GRAPPLING DEVICE FOR MERCHANDISE 2 Sheets-Sheet 1 Filed June 25, 1928 miifizf" Sept. 24, 1929. R. .s. DART GRAPPLING DEVICE FOR MERCHANDISE Filed June 25, 1928 2 Sheets-Sheet 2 Patented Sept. 24, 1929 UNITED STATES RUSSEL S DART, OF BOSTON, MASSACHUSETTS GRAPPLING DEVICE FOR MERCHANDISE Application filed. June 25,

My invention is designed for hoisting and moving heavy bodies and especially those of cylindrical form such as large metal pipe, reels of wire or metal tubing, baled goods, and the like.

My invention consists of a curved frame forming an are approximately the same as that of the body to be hoisted or moved and adapted to open and close without spreading laterally.

It is important that a device for this purpose should be compact and that in grappling or releasing a given body in a group the ad jacent bodies should not interfere with its operation. It is obvious that a device which is caused to spread in order to grasp or release the body to be hoisted or moved may be obstructed in its operation by contact with ad jacent bodies, and would also require additional space for such operation.

In the accompanying drawing illustrating my invention, Fig. 1 is a side elevation of my device in position for grasping a cylindrical body. Fig. 2 is a front elevation of my device in the same position as in Fig. 1. Fig. 3 is a front elevation showing an object grasped by the device and suspended from the ground. Fig. 4; is a sectional view on the line XX in Fig. 1. Fig. 5 is a sectional view on the line YY in Fig. 1.

Referring to the drawing, 5 is a curved metal frame having a longitudinal groove 6 formed in each edge thereof. The groove 6 is shown continuous; it is obvious that it would function substantially the same if it consisted of a series of short grooves in the same are as the continuous groove shown. 7, 7 are curved plates adapted to slide freely in the

grooves

6, 6. 8 is a hook secured to the frame and adapted to engage the connection with a crane or other machinery for hoisting or moving heavy objects. 9, 9 are chains or cables connecting the curved plates 7, 7 with the ring 10. 11, 11 are stops to limit the upward movement of the curved plates 7, 7.

The operation of my invention is as follows :Preparatory to grasping a cylindrical or other form of object for which it is adapted, my device is suspended by means of the ring 10 upon the load hook of a crane or other 1928. Serial No. 287,978.

machinery employed for that purpose. It is apparent that when the device is thus suspended the weight of the frame would cause the curved plates 7, 7 to rest in contact with the

stops

11, 11. At the upper end of each curved plate 7 is a stop 12 which contacts with the rib 13 at the lower end of the frame 5 and thereby limits the downward movement of each curved plate 7. The arm of the crane is lowered until the device first rests upon the cylindrical object 14:, and then continues to lower and to permit the curved plates 7, 7 to slide in an inwardly curved path and to grasp the obJect so that it may be securely held while being hoisted or moved. The operator then engages the ring 10 with the hook 8 and the device is ready to be raised and to hoist or otherwise move the object in its grasp.

The fundamental feature of my invention consists of the curved frame combined with a palr of curved members slidably mounted thereon. It is obvious that many variations from the details of the structures described and shown to illustrate my invention may be made without departing from its essential features and it is understood that such variations are within the scope of my invention so long as said fundamental feature is embodied therein.

What I 'claim and desire to secure by Let-- ters Patent is:

1. In a grappling device a semi-circular shell combined with means for hoisting it, and suspended therefrom with its axis lying in approximately a horizontal plane, com bined with a pair of curved members mounted in guides upon the surface of said shell and adapted to slide downwardly therein and to extend beyond the edges of said shell.

2. In a grappling device a semi-circular shell combined with means for hoisting it, and suspended therefrom with its axis lying in approximately a horizontal plane, combined with a pair of curved members mounted in guides upon the surface of said shell, having substantially the same are as the surface of said shell, and adapted to slide downwardly therein and to extend beyond the edges of said shell.

' 3. In a grappling device a semi-circular shell combined with means for hoisting it, nected with the upper ends of said curved and suspended therefrom with its axis lying members.

in approximately a horizontal plane, com- In testimony whereof I have hereunto set bined with a pair of curved members mountmy hand this 11th day of June, 1928.

ed in guides upon the surface of said shell, RUSSEL S. DART. s

having substantially the same are as the surface of said shell, and adapted to slide downwardly therein and to extend beyond the edges of said shell, and means to limit the 1 downward movement of said curved members.

4. In a grappling device a semi-circular shell combined with means for hoisting it, and suspended therefrom with its axis lying 15 in approximately a horizontal plane, comso bined with a pair of curved members mounted in guides upon the surface of said shell having substantially the same are as the surface of said shell, and adapted to slide downwardly therein and to extend beyond the edges of said shell, and means to limit the upward movement of said curved members.

5. In a grappling device a semi-circular shell combined with means for hoisting it,

and suspended therefrom with its axis lying 90 in approximately a horizontal plane, combined with a pair of curved members mounted in guides upon the surface of said shell,

having substantially the same are as the surface of said shell, said curved members being 95 adapted to slide freely in said guides and normally extending beyond the lower edges of said shell, and stops to limit the upward and downward movements of said curved members. 10(

6. In a grappling device a semi-circular shell combined with means for hoisting it, and suspended therefrom with its axis lying in approximately a horizontal plane, com- I bined with a pair of curved members mounted and confined in guides upon the surface of said shell, having substantially the same are as the surface of said shell, and adapted to slide downwardly therein and to extend beyond the edges of said shell.

7. In a grappling device a semi-circular shell combined with means for hoisting it, and suspended therefrom with its axis lying in approximately a horizontal plane, combined with a pair of curved members mounted in guides upon the surface of said shell and adapted to slide downwardly therein and to extend beyond the edges of said shell, and

5 means; for suspending said shell connected with the upper ends of said curved members.

8. In a grappling device a semi-circular shell combined with means for hoisting it, and suspended therefrom with its axis: lying;

in approximately a horizontal plane, com- 15 bined with a pair of curved members mount ed in guides upon the surface of said shell and adapted to slide downwardly therein and to extend beyond the edges of said shell, and .i flexible means for suspending said shell con- 1: