US 3145766 A
Description (OCR text may contain errors)
1964 R. M. WICKHAM ETAL 3,145,766
COLLAPSIBLE BARRICADE 2 Sheets-Sheet 1 Filed May 4, 1961 H 4 w a bE HHHMHHHKE i Z g F m INVENTORS PAY M. WIC/(HHM Ens/ale W BLEAMJR BY /d%/ 416M ATTORNEY 25, 1954 R. M. WICKHAM ETAL 3,145,766
COLLAPSIBLE BARRICADE 2 Sheets-Sheet 2 Filed May 4, 1961 INVENTORS RAY M. W/CKHAM BY EDGAR W BLEA/YLJP. W
United States Patent Filed May 4, 1961, Ser. No. 107,678 7 Claims. (Cl. 160135) This invention relates to portable collapsible barricades for use outdoors or indoors, and either for emergency or permanent use.
More specifically the invention relates to a portable lazy tongs or scissors type of collapsible barricade.
It is an object of this invention to provide a barricade of this type, which if desired can be used as a fence to enclose an area.
It is a further object of this invention to provide a barricade with jointed sections so that the barricade may be angled across a passageway or about an area and yet be well supported not only at its ends but also at the joint or joints between the sections.
It is a still further object of the invention to provide a barricade of a multiplicity of sections with leg supports between sections, the leg supports forming pivots for the sections.
Yet another object of the invention is to provide for firm end leg support for the barricade, independently of the expanded or collapsed condition of the barricade.
Other objects of the invention are to provide extensions on some of the bars of the lazy tongs to assist in handling of the barricade, and to provide supports on the barricade to support signal lamps, flags and the like.
Still other objects of the invention will become apparent after consideration of the following specification when taken in conjunction with the accompanying drawing in which:
FIG. 1 is an elevational view of a barricade in accordance with the invention, parts being sectioned to better illustrate the construction of the barricade;
FIG. 2 is an end view of the barricade, with hidden parts shown in dotted lines;
FIG. 3 is an enlarged detail view of the upper portion of FIG. 2, parts being in section;
FIG. 4 is a section on the line 4--4 of FIG. 3;
FIG. 5, on an enlarged scale, is a section on the line 5-5 of FIG. 1;
FIG. 6 is a section on the line 6-6 of FIG. 5;
FIG. 7, on an enlarged scale, is a section on the line 77 of FIG. 1;
FIG. 8' is a vertical elevation of a modified barricade with parts broken away to indicate that additional crossbars and intermediate legs may be provided, and
FIG. 9 is a diagram illustrating how a pair of barricades may be utilized to form a fence or guard around an open manhole.
Now referring to the drawings in greater detail, the bar ricade, in general, comprises a number of bars 10, which may be channel irons, pivoted together intermediate their ends as at 12 and at their upper and lower ends as at 14 and 16 to form a lazy tongs arrangement. The pivots 12, 14, and 16 may each be bolts and nuts and associated washers to facilitate assembly and disassembly of the barricade. It is contemplated that any suitable form of pivot may be used and that the lazy tongs arrangement may be secured by quick acting fasteners or other means and that in place of spacing washers positioned around the pivots between the bars 10, a boss on at least one of the arms may be utilized.
The barricade shown in FIG. 1 is in two sections, each section being pivotally mounted on a swivel or pivot rod 18, the rod 18 being elongated downwardly and there forming a lower integral leg extension 20, so that the sections, if desired, can be swung about the longitudinal axis of the rod and the rod may support adjacent sections of' the barricade. Each of the ends of the sections remote from the rod is supported by a pair of tubular legs 22 which can be angled apart or toward each other. The lower ends of the legs 22 may be capped with rubber or plastic feet 23, should the barricade be used in places where it is desirable not to mar the supporting surface or floor. When the barricade is collapsed, or when extended slightly with the sections in a common plane, the leg extension 20 may be slightly above the support surface 24 so as to facilitate elongation of the lazy tongs and avoid drag of the leg extension on the surface. Also, when the lazy tongs is fully extended, the leg extension 20 may contact the supporting surface. When the sections of lazy tongs are angled with respect to each other, the extension 20 will contact the support surface 24 and afford support for the intermediate portions of the barricade.
The upper ends of the bars 10 adjacent the rod 22 are each pivoted by a bolt and nut to an angled piece 25, see particularly FIG. 4, which may be bent out of or welded to a cross plate 26 whose upper end is offset as at 28 to rigidly support a bracket 30 formed as part of the offset portion or welded thereto. This bracket may support the pole of a Warning flag or a signal lamp, as may be desired, the bracket for this purpose being provided with aligned perforations 32 and 34 of various diameters. It will be apparent that other forms of brackets or attaching devices to support warning flags and signal lamps may be employed without departing from the scope of this invention.
Each of the cross plates is also provided with bolt and nut pivots 36 for the legs 22. To maintain the legs of a pair in fixed spread apart relationship and to permit collapse of the legs of a pair toward each other, the following parts are provided. Each leg is provided with a plate, as 38 and 39, fastened to the leg by the pivot bolt 36 and by an additional bolt and nut 40. Each of the plates has a bayonet slot including an arcuate section 42 and a substantially vertical section 44, which vertical sections are in registration when the legs are angled apart the desired angle. A manually operable lock pin 46 rides in the slots and locks the legs in their spread apart condition when in the registering vertical sections. In the swung together condition of the legs, slight notches 48 in the arcuate slots, engaged by the pin 46, hold the legs together against accidental separation, the notches, however, not being deep enough to prevent spread of the legs merely by manually angling them apart. The lock pin is mounted in a channel lock slide 50 slidable on a lazy tongs support rod 52, the pin being urged to engage within the bottoms of the vertical slots 44 or the notches 48 by a spring 54 surrounding the rod and reacting against a washer 56 on the rod, the washer abutting a pin 58 transverse to the rod 52 or projections struck out from the rod. The upper end of the rod 52 is pivotally mounted on a screw bolt 69 passing snugly through the outer plate 38 and fairly loosely through an opening in inner plate 39. When the pin 46 looks in the slots 44, it will be observed, the rod 52 will be supported against pivotal movement since the pivot for the rod and the lock pin are displaced from each other longitudinally of the rod. The lower end of rod 52 slidably mounts a slide 61 which may be of one-piece construction. For convenience in forming the slide, however, it is preferable to make the slide of two identical halves 62 with semicircular recesses to slidably engage the rod 52, the parts 62 being welded to each other where they abut. To reduce the friction between the halves 62 and the rod, the halves 62 are each provided with spacing nibs 64. The slide is pivotally connected to the lower end of an end bar 10 by one of the bolt and nut connections 16. In between each of the joints between the bars or between a bar and its associated slide a suitable washer 66 is utilized to reduce the friction between the parts, or circular fiat protrusions may be pressed into the bar to provide therebetween washerlike bearing surfaces.
The pivot rod 18 is provided near its upper end with nibs 70 or equivalent means to support a washer 72. A pair of upper angle brackets 74 and 76 is pivoted on the pivot rod, which brackets are respectively bolted by bolts 14 and associated nuts or other means of pivotal fastening to the upper ends of the adjacent bars of the lazy tongs sections. To hold the angle brackets in place, the upper end of the pivot rod is surmounted by a sleeve 78 conveniently made hollow to accommodate the pole of a flag, and the sleeve is held to the pivot rod by a set screw 89, or a driven pin passing through the sleeve 78 and pivot rod 18.
Slidable along and rotatable about the pivot rod is the sleeve 82 about which is pivoted the lower angle brackets 84 and 86 and to which brackets are pivoted, by the bolts 16 or other means of pivotal fastening, the lower ends of adjacent bars 10 of the lazy tongs sections. To hold the brackets 84 and 86 in place with respect to the sleeve 82, the sleeve is provided with two grooves 88 within which are snapped two retaining rings 90.
For convenience in manipulating the barricade, both to extend and retract the lazy tongs and to set the sections to selected angles with respect to each other, some of the bars 10 may be extended upwardly as indicated at 92 to provide manuals for easy accessibility.
While for sake of light weight, portability, and compact storage, the form of invention disclosed in FIG. 1 may be preferred, should a longer barricade be desired, extra sections may be interposed between the end supports of the barricade, as indicated in FIG. 8. These extensions may be added at will since the connections between bars and other elements of the barricade are all easily removable and replaceable bolts.
Whether the barricade be made of two or more sections, it may be made to conform to various configurated passageways or areas to be protected. In FIG. 9 there is diagrammatically illustrated a manhole 94 about which is placed two barricades of the character shown in FIG. 1, each of the barricades being arranged with its two sections at right angles to each other. Obviously a foursection unit of the type shown in FIG. 8, may be utilized to serve the same purpose.
In practice, the barricades may be zinc plated to make them weather resistant or coated with baked enamel, and painted with a reflective paint to make them visible at night when in the path of beam of light, as from an automobile headlight.
Having thus described the invention, what is claimed is:
1. A collapsible barricade comprising a multiplicity of pivotally connected bars forming lazy tongs sections, means pivoting one of said sections to an adjacent section to form a desired angle therebetween, and ground engaging supports for each of said sections spaced from the pivoting means, said pivoting means having formed therewith a leg section which in conjunction with the ground engaging supports, in the extended condition of the barricade, maintains the barricade in position in desired angular relationships between the sections, the lower end of the leg section terminating short of a line joining the lower ends of the ground engaging supports in the collapsed condition of the lazy tongs.
2. A collapsible barricade comprising a multiplicity of pivotally connected bars forming lazy tongs sections, means pivotally connecting said sections together to permit of angularly relating the sections to each other, an upper plate for each section to which one of the bars of the lazy tongs is pivoted, and end supports at the nonpivoted ends of the sections, each end support comprising a pair of legs pivoted at their upper ends to said plate,
like lock elements connected to each of the legs, and interconnecting means between the lock elements to, at will, lock the legs against collapse.
3. A collapsible barricade comprising pivotally connected bars forming lazy tongs, an upper plate at each end of the barricade to which a bar is pivotally connected, and end supports for the barricade, each of said end supports comprising a pair of legs whose upper ends are pivoted to said plate, each of said legs having a lock plate secured thereto, a bayonet slot in each plate and a lock pin movable in both slots, a lock slide supporting the pin, a rod attached at its upper end to said plate slidably supporting the lock slide, spring means reacting between the lock slide and a fixed stop on the rod to urge the lock slide and attached pin to locking position.
4. A collapsible barricade comprising pivotally connected bars forming lazy tongs, an upper plate at each end of the barricade to which a bar is pivotally connected, and end supports for the barricade, each of said end supports comprising a pair of legs whose upper ends are pivoted to said plate, each of said legs having a lock plate secured thereto, a bayonet slot in each plate and a lock pin movable in both slots, a lock slide supporting the pin, a rod attached at its upper end to said plate slidably supporting the slide, spring means reacting between the lock slide and a fixed stop on the rod to urge the slide to locking position, said rod extending down to substantially the lower level of the lazy tongs, and a second slide pivoted to an adjacent bar of the lazy tongs at a free end therof, said second slide embracing the rod to slide therealong on expansion or collapse of the barricade.
5. A collapsible barricade comprising a multiplicity of pivotally connected bars forming lazy tongs sections, means pivoting one of said sections with respect to another to form any desired angle between the sections, and end supports at the non-pivoted ends of the sections, said pivoting means having formed therewith a leg section which in conjunction with the end supports, in the extended condition of the barricade, maintains the barricade in position in desired angular relationships between the sections, said pivoting means extending upwardly, each of said sections terminating in an angle bracket threaded in overlapping relationship over the leg section, a stop on the leg section to limit downward movement of the angle brackets on the leg section, and a sleeve on the upward extension of the pivoting means engaging the topmost angle bracket to hold the sections together at their upper ends, the sleeve forming a socket for reception of the pole of a flag.
6. A barricade comprising a series of bars pivotally interconnected with one another forming a lazy tongs, the upper ends of each of the end bars of the lazy tongs being connected to a cross plate, a pair of legs pivoted to the cross plate, interacting pieces on the legs for assisting in holding the legs in spread out condition, a rod pivoted on the interconnecting pieces and extending down to below the lower end of the adjacent end bar of the lazy tongs, a slide pivoted to the lower end of said rod adjacent end bar and mounted to slide along said rod, and a latch slidable on the rod away from the pivot of the rod and coacting with the interacting pieces to lock the legs against pivoting and acting further to lock the rod against pivoting on the interconnecting pieces.
7. A collapsible barricade comprising a multiplicity of bars pivotally connected together by easily removable pivot bolts forming lazy tongs, each of the end bars at the upper portion of the barricade being connected by an easily removable pivot bolt with an angle plate, said angle plate being integral with a cross plate, a pair of legs pivotally bolted to each of the cross plates, means to lock the legs in spread apart barricade supporting position comprising a pair of plates each fastened to a leg, overlapping bayonet slots in said pair of plates, a rod depending from the pair of plates, a slide riding on the lower end of each rod and connected by a removable pivot bolt to the adjacent end bar of the lazy tongs, and a spring 684,130 urged latch slidable on the rod having a portion engage- 2,892,492
able with said slots.
References Cited in the file of this patent 5 UNITED STATES PATENTS 20,956 141,750 Becher Aug. 12, 1873 810,761 475,056 Hall May 17, 1892 862,760
6 Taubert Oct. 8, 1901 Jackoboice June 30, 1959 FOREIGN PATENTS Sweden June 2, 1906 Germany Aug. 13, 1951 Great Britain Mar. 15, 1961