US1840971A - Skid and lift truck means for handling materials - Google Patents

Description

'Ja'n..l2, 1932. K 1,840,971 SKID AND LIFT TRUCK MEANS FOR HANDLING MATERIALS Filed Grit. 24, 1950 7 7 1 7 g? l J L 4 5. Q 3 4L 7 L 5' 6 7 3 r," 4 I 6- Z H yfiH 1 1 111 311 nd: r .194

o i I 1/ INVENTOR, cidmo/ M M WVW ATTORNEYS.

"Patented Jan. 12,1932

* w UNITED STATES EDWARD B. POLK, 01' 8A0, CALIFORNIA SKID AID TRUCK was 103 HANDLING ILQEBIAIIB A Application fled October 84, 1880. Serial Io. 90,813.

My invention relates to the art of handling materials b skid and lift-truck means; an art which in practice has been extensively applied in connection with the storing, shipping, and otherdisposal and convenient use of avariety of manufactured suppliesespecially in and about railroad shops.

In this art the essential factors involve the initial placing of the articles upon a raised 10 platform, commonly known as a skid, and vthen introducing under the loaded skid a truck adapted to lift .it from its 'tion of rest and transport it to and leave it at its destination. i l5 It is evident that in order to carry out such practice one feature muatbe present under all conditions andcircumstances, namely, that the skid -must, in its pomtion of rest while being loaded, .be to a sufiicient :0 height to enable the lift-truck jack-extension to be run in under it. As far as I am aware this necessi has hitherto been met by providing the 'd with legs or bottom projections of some kind which are a permanent part of the skid. Whatever form these leg supports may assume they detract from the space in which the skids may be packed in storing or shipping and are thus '.not economical. A Furthermore, such skids are commonly used for the temporary storage of materials, and also for the trans rtation thereof in railway cars or other ve 'cles, the object be-:

ing to reduce storage and transportation costs by minimizing handling. Such uses, however, require great numbers of skids, with consequently large capital investment, the number required depending not only upon the amount of material, but also upon the i length of time it remains in storage or transit,

Moreover, when the skids are empty, and especiall when being returned empty in cars orfvehic es, the occupy considerable space, on account of t eir legs. 11', is the object of my invention to efiect s greater economy by reducing the capital investment required for a given number of skids, and by conserving the packing, storing and shipping space; and to this end my F invention comprises a leglcss skid in associaplatform or body tion with spaced supporting members or rails either fixed or movable, but independent 0 the skid, and of dimensions adapted to raise it sufliciently for the introduction beneath it of the lift-truck extension. Capital investment is reduced because my flat skids and their independent supporting rails can be built at much-less cost than those having permanent legs, and further because it is unnecessary to supply supports for all] skids, a certain proportion thereof being always in' transit'. Space is saved because the flat skids, whether loaded or em ty, can be placed directly upon the floor o a .car or other vehicle, or, when empty, can be stacked on edge in otherwise unused spaces.

When the storage'of material is in permanent locations, the supporting rails can be fixed to the ground or floor, and can be cheaply constructed, preferably of timber. However, said rails can be movable, if de- I sired, thus providing flexibility (practically equal to that of the commonl ,use leg skids.- Both these developments of t e invention are ilh strated and described herein in their preferred forms, thou h it must be understood that changes may made without. departing from the spirit of the invention as defined by the claim hereunto appended.

In the drawingsi Fig. -1 is a perspective view showing twoof my skids resting upon fixed rails.

Fig. 2 is an end view of the skid.

Fig. 3 is a front elevation showing the I skids resting upon movable supporting rails. v

' Fig. 4 is a side elevation of the form of movable su port shown at the left of Fig. 3, adapted to hold a single rail.

Fig. 5 is a side elevation of the form of movable support shown at the right of Fig. 3, ada ted to hold two parallel rails.

e reference numeral 1 designates my skid, which comprises a substantially fiat portion, upon which the material to be stored or transported maybe piled. The skid is preferably, though not necessarily, made of mortised wooden strips 2, Figs. 1 and 2, whose ends are confined between reinforcingstrips 3 and 4 held together by bolts 5. The strips 3 on the top of the deposited,

havingfeet 10 and 10 skid serve as retaining flanges to prevent the piled material; (not shown) from sliding oil, and the strips 4 on the bottom serve as bearing flanges on which the skid rests. The sk1d is reversible, either side being the top. 6 in Fig. 1 are rails spaced apart a distance substantially equal to the spanning capacity of the skid which rests upon them. These rails, which are preferably formed of wooden timbers, with separate wearing faces 7, are fixed in place, as for example by angle brackets 8, and have a height adapted to raise the skid sufiiciently to permit the lift extension of the usual transporting truck,

unnecessary herein to show, to pass in under the loaded skid; and upon operating'its elevating jacks, to lift the skid from the rails and carry it off to a destination, which may be another roup of rails upon which it is or temporary convenience or storing purposes;-or the skid may be directly lifted from the truck and deposited in cars for shipping. In practice the supporting. rails 6 may be a group more or less extensive ada ted for a number of skids, as is indicated in 1g. 1.

Fig. 3 illustrates a type of supporting rail structure having the same function as that of Fig. 1, but adapted to be moved from place to place as circumstances of loading or storing may demand. 9 and 9' are supporting stands suitablyspreadtoinsure stability, andbrackets 11 and 11' adapted to hold either one or two rails 12 respectively. The rails 12 may be of any suitable nature, such as scra railway rails, as shown. The stands 9 an 9' are placed upon the ground or floorin the proper relative positions, and

plurality of independent legless skids contiguously freely assembled in an elevated horizontal plane; a plurality of ralls upon which the assembled skids freely rest; a. plurality of stands for supporting said rails in elevated position; single brackets on the stands carrying the rails which support the skid assemblage along its outer sides; and double brackets on the stands carrying the rails which support the skid assemblage intervening its outer sides.

In testimony whereof I have signed my name to this specification.

EDWARD H. POLK.

. the rails 12 laid in the brackets 11 and 11g.

the whole forming a pair or group of parallel supports upon which the skids 1 may be placed, in the same manner as upon the fixed rails 6 of Fig. 1f

Where but one line of skids, i. e. two rails, is required, the stands may be of the form shown at 9 inFigs. 3 and 4, in which a single plece of flat iron is bent at its upper end to form the U-shaped bracket 11, and at its lower end to form one of the feet 10, the other feet being formed by a second piece-13 welded or otherwise secured at 14 to the upright port10n of the first piece. If a plurality of pairs of rails are required, the single stands 9 may be used for the outside rails, but the inner rails, arranged in m Fig. 3, are preferably supported upon stands of the form shown at 9' in Figs. 3 and 4, 1n whlch a double U-shaped bracket 11' is welded or otherwise secured as at 15, to the apex of an inverted V-shaped standard of flat iron whose lower ends are bent horizonllzzsl ly in opposite directions to form the feet Whether the supportingrails are permanently fixed 1n position, as in Fig. 1, or

pairs as shown at the right I

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