US1753578A

US1753578A - Plate-conveying hook

Info

Publication number: US1753578A
Application number: US314109A
Authority: US
Inventors: Raymond Gwynne
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-10-22
Filing date: 1928-10-22
Publication date: 1930-04-08
Anticipated expiration: 1947-04-08

Description

April 30 G. RAYMOND M 1,753,578

PLATE CONVEYING HOOK Filed Oct. 22; 1928 Patented Apr. 8, 1930 UNITED STATES PATENT OFFICE,

GWYNNE RAYMOND, OI" KANSAS CITY, MISSOURI V PLATE-CONVEYING noon Application fled October 22, 1928. serial 1T0. 314,109.

which will consequently speed up the work and effect a material saving in labor.

A further object of the invention is to produce. a hook of the general character outlined which will securely hold the load against accidental falling from position and from which the load may be easily unloaded without disarrangement of the relationship of its individual units.

Another object of the invention is to produce a device of the general character mentioned which is adjustable for plates or units of varying width. v

A still further object of the invention is to produce a conveyor hook which is of strong, durable, efficient and inexpensive construction; and in order that it may be fully understood, reference is to be had to the accompanying drawing, in wh1ch:

Figure 1 is a rear elevation of the hook as 7 it will appear when being engaged with a row of edgewise arranged flanged plates.

Figure 2 is an end view of the same with the supporting sleeper in the foreground broken away. 7

Figure 3 is a section on the line II IIII R of Figure 1 with the load omitted.

Figure 1 is an enlarged detail of a feature for adjustably supporting a part of the conveyor hook.

In the said drawing, where like reference characters identify corresponding parts in all of the figures, 1 and 2 respectively indicate the vertical and horizontal arms of a conveyor hook, said arms being in duplicate and v being spaced any suitable distance apart de- 5 pending upon the length of the load to be carried so that such load may be readily balanced. The arms 1 and'2 at their juncture or bend may be reinforced as shown and are braced by a cross rod 3. The arms 1 at their 0 upper ends are braced by a cross rod 4 and under the load, the hook being pushed or beyond said rod converge inwardly and extend forwardly and terminate ina connecting cross member 5 so positioned that the hook,

loaded or unloaded will substantially bal- 31108 with he arms 2 in a horizontal plane,

said hook being illustrated as suspended from a block 6. The arms. 2 at their ends are braced by a cross brace 2 1 Pivotally mounted between the arms 1 and. at such a distance above the arms 2 as to accommodate the heightof the load, that is the width of the plates, is a load lockinghook comprising a pair of arms 7, bracedatjtheir forward ends by a connecting cross bar 8,

their rear .end's'b'eing extended beyond the pivotal point and being connected by an 'oper ating handle or cross bar 9, whereby the hook may be manually swung around its pivotal point; 1 x

' Thedevice as illustrated is provided with adjustable pivots, although the adjustable feature is not essential to'proper operation, comprising a pair of trunnions 10 one being secured .to each o1: the arms 7, the bars being by held spaced apart in linewith their pivots by a cross bar 11. The trunnions are received within bayonet slots 12 in reinforcing bars" 13 welded or otherwise secured to the vertical arms 1 as illustrated, with the open ends of the bayonet slots at the rear edges oftlie arms so that the strain of the load, as will hereinafter appear, willtend to more firmly seat the trunnions in position. To prevent accidental dislodgement of the locking hook "or arms 7, the'rear edges of the bars 1 may be provided with tapped holes 14 :to receive the threaded shank of a locking bolt 15 carrying a locking plate 16 which will overlie and close the open ends of the bayonet slots as illustrated. f The load'17,as indicated in Figures '1 and 2, comprises a plurality of edgewise arranged I similarflanged plates supportedby'a pair of parallel sleepers 18, all of the plates being ordinarily slightly inclined from the vertical as'two of them are shown.' WVhen the h'ook is used to convey such material the sleepers are spaceda suflicient distance apart to permit the arms 2 to be thrust betwe'en them and mo locking bars bridging the moved under theload until the first plate is slots to retain said pivots therein, and clampsubstantially in abutment with the vertical ing screws secured to said locking plates and arms 1, it being thus apparent that the length to said first-named hook members for retainof the arms 2 determines the number of units ing the locking'plates in operatlve position.

or plates which may be conveyed as a single load. The hook is now given a vertical lift and the bevelled hook ends 19, formed on and extending above the plane of the load carrying portions of the arms 2, force their way between adjacent plates, it being understood that during the positioning of the hook, the

operator, by pulling downwardly on the handle 9, elevates the locking arms '7 so that they do not interfere with the proper positioning of the device. I 7

After the

arms

1 and 2 have been properly positioned as described, the operator releases locking arms 7 and their bevelled hook ends 20 enter between the upper edges of the plates and thus hook over the edge 'ofthelast plate of the load, as shown in Figure 2. It will be apparent that the load may now be elevated without any possible accidentalfdisplacement of any part of the load to the injury or damage of workmen or equipment, and that it can be deposited on sleepers by a reverse of the operations above described without necessitating a great deal of manual efi'ort in loading or, unloading the plates whereby it is possible. to materially speed up the work with a resultant saving in labor and an assurance of safety.

From the above description, it will be apparent that I have produced a devicewhich embodies. all the features of advantage set out as desirable in the statement of the objects of the invention, andawhile I- have described and illustrated the preferred embodiment, it is to be understoodthat I' reserve the. right to make all changes properly falling within the spirit and scope of the appended claims. I

I claim:

1. A device of the character described, i

comprising a pair of substantially vertical right angle shaped similarly facing angle members connected together at theirupper ends andhaving upturnedhooks at. thefree ends of their lower or substantially-horizontal arms, a pair of similar hooks-relatively inverted with respect to the ,first-named members and adapted to extend substantially parallel with the lower, arms of the latter and pivotally mounted on the vertical arms of the latter at an intermediate point in their length.

2. In a device of the character described, a pair of angle shaped upwardly-facing hook members connectedtogether at their upper ends and providedv with a vertical series of bayonet slots'in theirupper arms, a pair of connected, hooks inverted with respect to. the I first-named hook members and provided with pivots engaging certain of said bayonet slots,

engaged" locking