US2892492A

US2892492A - Road barrier

Info

Publication number: US2892492A
Application number: US587628A
Authority: US
Inventors: Edward W Jackoboice
Original assignee: Individual
Current assignee: Individual
Priority date: 1956-05-28
Filing date: 1956-05-28
Publication date: 1959-06-30
Anticipated expiration: 1976-06-30

Description

June so, 1959 2 2 E. W. JACKOBOICE ROAD BARRIER Filed May 28, 1956 E dwardwduokobokz gflw f WM United States Patent ROAD BARRIER Edward W. Jackoboice, Grand Rapids, Mich.

Application May 28, 1956, Serial No. 587,628

3 Claims. (Cl. 160-135) This invention relates to a road barrier used for a temporary obstruction on a road. The barrier is intended to be placed across a road when it is under repair or when for other reasons it is desired that traflic on the road be stopped.

Because of its temporary use, the barrier must be easily portable so that it can be moved from place to place or stored when not in use and this invention provides a barrier which can be collapsed into small size for transportation or storing.

The barrier comprises generally a lazy tongs structure which is collapsible or extensible longitudinally and at each end it has a pair of legs pivotally joined at their upper ends. The lower ends of the legs may be spread apart to firmly support the barrier when it is extended or they can be moved toward each other when the barrier is collapsed for transportation.

Mechanism is provided which will automatically spread the legs when the lazy tongs structure is extended and will move the legs toward each other when the lazy tongs is collapsed.

The invention provides various novel features of construction and arrangement hereafter more fully described, reference being had to the accompanying drawings in which,

Fig. 1 is a side elevation of one end portion of the barrier in collapsed condition,

Fig. 2 shows the parts of Fig. 1 with the barrier extended,

Fig. 3 is an end elevation of the barrier shown collapsed as in Fig. 1,

Fig. 4 shows the parts of Fig. 3 extended as in Fig. 2,

Fig. 5 is a fragmentary plan view showing the pivotal connections of the upper ends of the legs with the lazy tongs structure, and

Fig. 6 is a fragmentary plan view showing the pivotal connection of the lower part of the lazy tongs to the cross bar which connects the two legs.

Like reference numerals refer to like parts in all of the figures.

The lazy tongs structure comprises a plurality of bars 1 arranged in crossed pairs pivotally connected together at their longitudinal centers at 2 and having their extremities pivotally connected to the extremities of adjacent pairs at 3. This lazy tongs structure can be collapsed or extended and when collapsed as in Fig. 1 its vertical dimension is greater than when extended as in Fig. 2.

The upper end of the end bar 1 of the structure is pivotally connected at 4 to a T-shaped bracket 5 to which also are pivotally attached, in spaced relation at 6, the upper ends of the legs 7. The lower end of the end bar 1 of the structure is pivotally connected at 8 to an L- shaped bracket 9 which is also pivotally connected at 10 to a cross bar 11 extending between the legs 7.

The cross bar 11 is pivotally connected at 12 with one of the legs 7 between its upper and lower ends and the other end of the cross bar is pivotally connected at 2,892,492 Patented June 30, -9

13 with a sleeve 14 which is slidably mounted on the other of said legs 7.

Figs. 1 and 2 show only an end portion of the barrier having a pair of legs 7 and connecting members but it is to be understood that the other end of the barrier, not shown, is identical with that shown and described and has an identical pair of legs 7 and connecting members.

Operation Assuming the barrier to be in collapsed position as shown in Figs. 1 and 3, with the legs 7 close together, it is extended by pulling outwardly at its ends. In doing this, the lazy tongs structure will stretch out longitudinally and at the same time reduce its vertical dimension causing the extremities of the end bars 1 to move toward each other.

Now the lower end of the end bar 1 being pivotally connected to the cross bar 11 at its mid portion by the bracket 9, will cause the cross bar 11 to swing upwardly about its pivot 12 at one end and its other end being pivotally connected to the sleeve 14 at 13 will move the sleeve upwardly on its leg 7 thus causing the legs to spread at their lower ends as in Fig. 4.

The distance of extension of the lazy tongs structure will govern the amount of spread of the legs. When extended less than its full limit the legs will be spread less than when the lazy tongs is fully extended but because it presents less area when only partially extended, it does not require so much stability.

When collapsing the barrier, the motion of the parts is reversed and the sleeve 14 moves downward upon its leg 7 causing the legs to move toward each other and when fully collapsed the barrier is reduced to a very compact small size so that it is easy to handle and move from place to place and store when not in use.

The invention is defined by the appended claims which are to be considered comprehensive of all forms coming within their scope.

I claim:

1. A device of the class described comprising a collapsible and extensible body, a pair of legs at each end of the body and means actuated by collapsing and extending said body acting to move said legs of each pair toward each other when the body is collapsed and to spread said legs apart when said body is extended.

2. A device of the class described comprising an extensible and collapsible lazy tongs structure having crossed and pivoted bars at its respective ends, a pair of legs pivotally connected at their upper ends to the upper extremity of one of each pair of said end bars and means connecting said legs of each pair together, said connecting means being pivotally connected with the lower extremity of one of each pair of said end bars and acting to spread apart or move toward each other the legs of each pair upon extension or collapsing of said lazy tongs structure.

3. The elements of claim 2 in combination in which said means for moving said legs comprises a cross bar having one end pivotally connected to one leg and the other end pivotally connected to a sleeve slidably mounted on the other of said legs, said lower extremity of the end bar of the lazy tongs being pivotally connected to said cross bar between its ends.

References Cited in the file of this patent UNITED STATES PATENTS 141,750 Becher Aug. 12, 1873 774,487 Marten Nov. 8, 1904 2,221,357 Moore et al. Nov. 12, 1940 2,751,176 Mowry June 19, 1956