US2358767A

US2358767A - Stock lifting grab

Info

Publication number: US2358767A
Application number: US488465A
Authority: US
Inventors: Breslav Jack
Original assignee: Individual
Current assignee: Individual
Priority date: 1943-05-25
Filing date: 1943-05-25
Publication date: 1944-09-19
Anticipated expiration: 1961-09-19

Description

Sept. 19, 1944. J. BRESLAV STOCK LIFTINQ GRAB Filed May 25, 1943 INVVENTOR Jack Breslazr BY W ATTORNEY Patented Sept. 19, 1944 UNITED STATES PATENT OFFICE STOCK LIFTING GRAB I J -ack Breslav, New Haven, Conn. I Application May 25-, 1943, Serial No. 488,465

strains. (01. 294-61;

This invention relates to stock lifting grabs and more particularly to improvements in a form of grab which'is especially adapted to engage and lift a load of a plurality of bars of metaL'pipe, etc., for transfer from one location'to another.

The stock lifting grab of this invention isparticularly adapted to be moved sidewise under a load of bars, spaced from the floor or other loads on suitable supports, and then raised to engage the load at a plurality of points along its length. The load in some instances comprises'a plurality of long bars, which, due to their length, are not particularly rigid and require a substantially rigid support along their length. In many instances the such bars range up to forth feet in length. Stock lifting grabs for engaging and lifting bars of long length must b substantially rigid in construction, have their entire structure balanced, and be of sufficient strength, without requiring an excess of material in its structure whereby it will be of excessive weight, inconvenient to manipulate, and costly to manufacture.

One object of this invention is to provide a stock lifting grab adapted to engage and lift a load of bars which will be of such novel construction that it will be of s'u'iiicie'nt stiffness and strength for the purpose of its use while being constructed of a minimum amount of material and of a minimum weight. I

Another object is to provide in a stock lifting grab of the above nature, means to be disposed in under a load, to be lifted, to engage and lift the same, and means to counterweight the load engaging means. V

A further object is to provide in a stock lifting grab of the above nature, counterweightingmeans for the load engaging means, and meansfto stiffen the entire structure so that a minimum amount of material may be used in the entir structure.

A still further object of this invention is to provide an improved form of stock lifting grab which will be relatively simple in construction, inexpensive to manufacture, readily manipulated, compact, andvery efficient and durable in use.

With these and other objects in view, which will appear as the description proceeds, there has been illustrated in the accompanying drawing a form in which the features and principles of this invention may be conveniently embodied in. practice, it being understood that various changes may be made within the scope. of what is claimed, Lvithout departing from the spirit of the invenion.

In the drawing: a

Figure 1 is a'top plan view of a stock lifting grab embodying the. features and principles of this invention; I

' Figure 2 is a side elevational view of the grab shown in Figure 1;

' Figure Bis an enlarged sectional view of the grab taken on the line 3--3 of Figure 2;

Figure 4 is an enlarged sectional view of the grab taken on the line 44 of Figure 2; and

Figure 5 is an end view of a somewhat modified form or grab.

Referring now to the drawing wherein like reference numerals designate like parts throughout the several views, the grab selected to illustrate the features and principles of this invention comprises a main carrying beam ll, herein shown built up of oppositelydirec'ted channels l2 and I 3'spaced apart at intervals along their length by short bars l4 and J5 and short lengths of smaller channels it, the smaller channels 15 being set in between the channels I2 and; I 3 and bolted there to, as shown. In this instance a pair of spaced apart loops I and I8 are secured to the beam H, being set between the spacer bars 14 and I5 and welded thereto. The loops l1 and I8 are pro- 7 vided for the purpose of receiving connections,

such as hooks, "depending from a suitable lifting tackle, such as a hoist,'or'crane (not shown) by which the grab and'the loadeng'aged thereby may be lifted and transferred to the desired location. The load I9 is indicated by dotted lines in the drawing, and may consist of a plurality of cylindrical rods, fiat bars, pipes, or tubes, arranged in a pile and'supported from the floor on other loads, or suitable supports, such as horses. A plurality of bent legs 2| are secured at their upper ends' to the beam H, the said upper ends of the legs in this instance being the smaller channels [6; Extending outwardly and downwardly at an angle from the channels I 6 is a length of channel 22 and from the lower end of this angular extending length of channel 22 is a downwardly 'and vertically extending length of channel 23. From the lower end of the length of channel 23 a horizontally disposed length of channel extends, in under the main beam II, with its center substantially in vertical alignment with the vertical center of the main beam l I. A short piece of angle iron 25 is secured, in a vertical position to the outer end of the horizontally disposed length of channel 24 to prevent the parts, constituting the load [9, from sliding oi'l the load supportingarm, constituted by the horizontally disposed length of channel 24.

At the jointure between the lengths of channels l6 and 22 a reinforcing plate 26 is provided which is preferably welded to each channel. Likewise at the jointure between the lengths of

channels

22, 23 and 23, 24 reinforcing

plates

21 and 28, respectively, are provided. lAn elongated bent bar 30 extends the length of the grab and is secured to the bent legs 2|, as by welding, at the outer side of the jointure between the

channel lengths

22 and 23. Y v

In order to counterbalance the difference in weight between the angularly disposed channel length 22 and the vertically disposed channel length 23, and the short angle iron piece 25, a socalled outrigger device is provided which is herein shown as being constituted by a length of channel 29. tend the entire length of the grab and is secured to the main beam spaced from the beam l at the side thereof opposite to the side from which the bent legs 2| extend, by cross-bars 3|, which are secured as by welding to the channel 29 and the main beam I. The number of cross-bars 3| in this instance equals the number of legs 2| and they are spaced apart the same amount a the legs 2| are spaced along the main supporting beam Intermediate adjacent cross-bars 2| and extending from the channel I2 of the main beam to the channel 29 is a bar 32 which is secured to the main beam I and to the channel 29 as by welding.

The channel 29 is further secured to the main beam H by a truss construction partly constituted by lengths of bars, in this instance T-bars 33, diagonally extending from the top of the channel 29 to the top of the beam between alternate pairs of cross-bars 3|, and from the top of the beam to the top of the channel 29 between the other pairs of cross-bars 3|. Th purpose of the truss construction, partly constituted by the diagonally extending T-bars 33 and partly by the cross-bar 3|, is two-fold, first to efficiently laterally stiffen the long main beam H, which is of minimum weight, but of sufflcient strength, to carry the load resting on the bent legs 2|, and secondly to support the channel 29. in proper spaced relation from the beam II to efliclently counterbalance the weight of the offset portion of the legs 2|. Beinglocated at the top of the grab this counterbalancing and/or stiffening means, or channel 29, in no manner interferes with the proper manipulation of the grab for th purpose for whichit was intended. 1

The modified form of grab illustrated in Figure comprises a beam 40 having one or more lifting loops 4| extending-upwardly therefrom. Load supporting legs 42, each comprising an outwardly and downwardly extending portion 43-, and a horizontally extendingload carrying portion 44 the center of the latter being vertically in align? ment with the center of the beam 40. Another horizontally extending portion 45 0f each of the legs 42 extends across the beam 40 and is suitably secured thereto. The portion 45 of each leg 42 extends beyond the beam 42 in a direction opposite to the direction the portion 43 extends from the beam, to form a counterbalance for the respective leg 42. A member 41 is'secured'to the free end of: the portion 45 to prevent the load slippin from the portion 45.

By the use'of the above disclosed arrangement of elements ina stock lifting grab it is possible to have the bottom member, or load supporting channel 24, of the legs 2 I, extend an equal amount each side of the vertical center line of the'main beam I. By the arrangement disclosed it is also possible to use a minimum amount of counterweight and to take advantage of the full width of the bottom member, or load carrying channel 24, of the legs 2|, no counterbalancing devic being .required to be disposed on these legs, as is often done in other grab designs. By the novel design of grab disclosed herein a minimum amount of material, both in weight and size, is required, as th main beam can be of relatively slender construction, while being of suflicient strength to carry the load, due to the reinforcing action of the above disclosed truss construction.

It will be understood that the novel features and principle of this invention may be embodied The channel 29 substantially ex- 'the spirit and essential attributes thereof, and it is therefore desired that th present embodiment be considered in all respects as illustrative and not restrictive, reference being had to the claims rather than to the foregoing description to indicate the scope of the invention.

Having thus fully disclosed the invention, what is claimed as new and for which it is desired to secure Letters Patent, is: I

1. In a stock lifting grab for lifting and trans ferring loads, a main load carrying beam, a plurality of load engaging horizontally disposed members spaced apart below and along said main beam, means extending outwardly to one side of said main beam and depending from said beam to connect it with each of said members, a member extending along and secured to said beam and being spaced from the same at the side thereof opposite that side from which said connecting means extends, tOl counterbalance the latter, and means to connect said counterbalancing member to said main beam to form a truss construction to laterally stiffen said main beam.

2. In a stock lifting grab for lifting and transferring loads, a main load carrying beam, a plurality of load engaging horizontally disposed members spaced apart below and along said main beam, means extending outwardly to one side of said main beam and depending from said beam to connect it with each of said members, and a truss construction, including a member extending along and spaced from said main beam at the side thereof opposite that side from which said connecting means extends, to counterbalance said connecting means and to laterally stiffen said main beam.

3. In a stock lifting grab for engaging and lifting stock, relatively long in length, a main carrying beam, a plurality of horizontally disposed stock engaging members disposed beow and spaced apart along the length of said main beam, means extending outwardly from one side of said main beam and depending therefrom to connect it with each of said members, a second beam extending along and disposed spaced from the other side of the main beam, and common means to connect said second beam and cooperating therewith to laterally stiffen said main beam.

4. In a stock lifting grab for engaging and lifting stock, relatively long in length, a main beam, a plurality of horizontally disposed stock engaging members disposed below and spaced apart along the length of said main beam, means extending outwardly from one side of said main beam and depending therefrom to connect it witheach of said members, a second beam extending along and disposed from the other side of said main beam to counterbalance said outwardly extending means, and in the same horizontal plane as said main beam, and common means to connect said second beam with, and to laterally stifien, said main beam.

5. In a stock lifting grab in accordance with claim 3 and wherein the common means to connect the second beam and cooperating therewith to laterally stiffen the main beam includes spaced apart cross-bars connected to and extending from the main beam to the second beam.

6. In a stock lifting grab in accordance with claim 4 and wherein the common means to connect the second beam with, and to laterally stiffen, the main beam includes a plurality of diagonal bars alternately extending from one beam to the other.

7. In a stock lifting grab for engaging and lifting stock, relatively long in length, a, main beam, a plurality of horizontaly disposed stock engaging members disposed below and spaced apart along the length of said main beam, means extending outwardly from one side of said main beam and depending therefrom to connect it witheach of said members, loop means provided on said main beam by which to support it from ment with the center of said main beam, a second beam extending along the main beam and spaced from the other side thereof and in the same horizontal plane as said main beam, and means to connect said second beam with said main beam including cross-bars extending from the main beam to the second beam and diagonal bars alternately extending from one cross-bar to the other to support the second in spaced relation from the main beam and to stiffen the main beam.

8. In a stock lifting grab for engaging and lifting stock, relatively long in length, a main carrying beam, a plurality of horizontally disposed stock engaging members disposed below and spaced apart along the length of said main beam, means extending outwardly from one side of said main beam and depending therefrom to connect it with each of said members, a second beam extending along the entire length and. disposed spaced from the other side of the main beam, spaced apart cross-bars connected to and extending from the main beam to the second beam, and diagonal bars alternately extending from one cross-bar to the other and between said beams.

JACK BRESLAV.