US3144914A - Saw horses or the like - Google Patents

Description

Aug. 18, 1964 s. TJOSVOLL SAW HORSES OR THE LIKE Filed April 2, 1963 FIG.4

IIVVENTOR. Sigurd jOSVO" ATTORNEY.

United States Patent 3,144,914 SAW HORSES OR THE LIKE Sigurd Tjosvoll, 619 2nd St., Brooklyn, N.Y.

Filed Apr. 2, 1963, Ser. No. 269,934

2 Claims. (Cl. 182-155) This invention relates to saw horses, barricades and similar supporting or restraining structures and more particularly to such structures which may be folded or collapsed.

Structures of this nature have many uses such as the supporting of boards whether the boards are to be sawn or to serve as, say, a platform. Other uses more or less independent of use for the support of other members, include the defining of polices lines or other indication of temporary boundaries.

Various forms of structures of this type have been produced in the past but the forms of which I am aware have been cumbersome to transport or store.

An object of the present invention is to provide a foldable saw horse or barricade wherein the legs may be folded to positions substantially parallel with the main horizontal beam or support member.

Another object is to provide such a structure having a normally horizontal support member which can be connected by a telescoping connector to a like structure.

Another object is to provide a structure of this type having socket means for locking the legs of the structure in selected positions.

These and other apparent objects are attained in a saw horse which, briefly described, includes a horizontal support with hinge means at each end portion for mounting round legs which may be folded to lie alongside the support, and means for locking the legs in erect or folded position.

In the accompanying drawing showing, by way of example one of many possible embodiments of the invention.

FIGURE 1 shows the saw horse in perspective.

FIGURE 2 is an end view.

FIGURE 3 is a partial bottom view of an end portion of the horse.

FIGURE 4 shows a detail of one of the legs and FIGURE 5 is an enlarged perspective of an end portion of the horse.

The invention, which is hereinafter called a saw horse, comprises a horizontal member in the form of a fluted pipe having internally projecting longitudinal ribs 11 which preferably terminate short of the ends 12 of pipe to leave an inner smooth wall 13 at end portions 14. These ribs may be omitted however under certain conditions discussed later. The pipe is of suitable material such as metal and is about 2% inches in diameter and has thick walls.

Two leg mounting or hinge members 15 are provided near the respective ends of the pipe and are of pressed steel welded to the pipe as at 16 for connecting legs 17 to the pipe. Each of the members 15 has an upper split trough-like portion 18 having symmetrical curved sides 19 shaped to the exterior of the pipe and these curved sides are welded to the pipe to secure the member thereto as mentioned above.

Integral with each side 19 is a somewhat L shaped flank part 20 extending downwardly and outwardly having horizontal and downward arms 21 and 22, the latter being toward the end of the pipe and inwardly turned to form a somewhat semi-cylindrical half socket 24 with tangential walls for one of the legs and opening toward the opposite end of the pipe. A triangular web portion 23 between the two leg sockets at their inner edges 25 3,144,914 Patented Aug. 18, 1964 "ice gives added strength to prevent the sockets from tending to spread apart under load.

The legs 17 are of smaller pipe, such as 1 inch diameter thick walled stock. Each leg, when the saw horse is erected, is disposed in a socket 24 and retained by a pivot pin 26 passing through opposite diametric holes 28 and 29 in the flank part 20 in the corner portion 30 thereof and in the inner side wall 31 of the socket.

The upper end portion 32 of each leg is provided with oval shaped diametric holes 34 through which the pin 26 passes allowing the leg to move longitudinally of its own axis with respect to the mounting member. Within the leg a tension spring 35 stretched between the pin 26 and a headed locking pin 36 fast on the leg urges the leg into the mounting member. The locking pin slides into a downwardly opening slot 38 in the lower end of portion 22 when the horse is in erected position so as to hold the leg substantially fixed with respect to the main pipe 10. By partially withdrawing the leg from the mounting member 15, the locking pin 36 is drawn from the slot 38 as permitted by the oval shape of the hole 34 receiving the pivot pin. The leg may then be turned about the pivot pin in a plane parallel with the flank part 20 so as to lie alongside the pipe 10, as shown by dotted lines for one leg in FIGURE 1, to folded position. Engagement of the locking pin 36 in an inwardly open slot 39 in the portion 21 in a manner similar to that mentioned of slot 38 enables the locking of the leg in folded position, with the spring holding the locking pin in the slot. An aperture 40 in the upper part of the socket 24 may be provided to improve clearance of the member 15 from the leg end near the oval holes.

Of course all legs are foldable as above described of only one of them.

The pipe end portion 14 may receive an extension rod or pipe 41 in telescope fashion as shown in FIGURE 1. The extension may be, if desired, supported at its outer end 42 by another similar horse 10 though the additional support may not be necessary.

In operation, the legs are withdrawn from the mounting member to the extent permitted by relative movement of the pivot pins in the oval holes 34 so as to free the locking pins from the slots 38 or 39, as the case may be, and all legs set in erect or folded position. In some instances both legs at one end may be kept folded while the others are erect.

A hole 44 in the web 23 affords a simple means for hanging a folded horse by hooks, say, on a wall during storage.

If no great load is to be on the pipe 10 and its hollow is desirable as storage space for an extension pipe of maximum diameter the ribs 11 are preferably omitted. However the ribs are frequently desirable not only for strength but especially when several horses are used with extensions, as in FIGURE 1 for barricades, so that telescoping action can be limited and the removal of the extension from an adjacent horse be prevented.

The invention claimed is:

1. In a saw horse having a horizontal pipe, round legs for supporting the pipe and two pressed steel means for hinging the legs on the pipe at each respective end portion of the pipe, each of said means comprising a split trough-like member having opposite symmetrically curved sides on and between which the pipe may rest and shaped to fit the exterior of the pipe and welded to the end portion of the pipe, a generally L-shaped flank part extending downwardly and outwardly from each of said sides, each flank part having a horizontal arm and corner portion both integral with the respective side and a downwardly projecting arm, said downwardly projecting arm having a wall turned back semi-cylindrically to form a half socket receiving one of the legs, the latter having near the end portion thereof an oval diametric hole therethrough, a pivot pin passing through holes provided in said corner portion and in the wall respectively, and also through the oval hole, whereby the leg may be turned about the pivot pin to be partially removed from the socket and folded substantially alongside the pipe, locking means for selectively locking the leg in the socket in erect position and in folded position along the pipe, and a generally triangular web connecting the two walls of adjacent half sockets on an end portion of the pipe.

2. In a saw horse as claimed in claim 1, said legs being hollow at their upper ends and each provided with a headed locking pin radially therefrom and therein, a tension spring within the leg and tensed between the locking pin and pivot pin, said horizontal arms and downward arms being provided with approximately horizontal and vertical open end slots to receive the locking projection to provide said locking means, the location and depth of the 4 slots with respect to the position of the pivot pin and locking projection being such so that the leg may move in the direction of the axis thereof relative to the pivot pin so that the locking projection may be Withdrawn from the slots and the leg swing between folded and erect positions so that upon reaching one of such positions the spring will pull the leg so that the projection is drawn into a slot to lock the leg.

References Cited in the file of this patent UNITED STATES PATENTS 1,282,797 Fouts Oct. 29, 1918 1,719,440 Nathan July 2, 1929 1,820,592 Bauer Aug. 25, 1931 2,325,592 Degler Aug. 3, 1943 2,711,917 Blu June 28, 1955 2,755,144 Simmons July 17, 1956 OTHER REFERENCES 173,257 Sweden Nov. 8, 1960

Claims (1)

1. IN A SAW HORSE HAVING A HORIZONTAL PIPE, ROUND LEGS FOR SUPPORTING THE PIPE AND TWO PRESSED STEEL MEANS FOR HINGING THE LEGS ON THE PIPE AT EACH RESPECTIVE END PORTION OF THE PIPE, EACH OF SAID MEANS COMPRISING A SPLIT TROUGH-LIKE MEMBER HAVING OPPOSITE SYMMETRICALLY CURVED SIDES ON AND BETWEEN WHICH THE PIPE MAY REST AND SHAPED TO FIT THE EXTERIOR OF THE PIPE AND WELDED TO THE END PORTION OF THE PIPE, A GENERALLY L-SHAPED FLANK PART EXTENDING DOWNWARDLY AND OUTWARDLY FROM EACH OF SAID SIDES, EACH FLANK PART HAVING A HORIZONTAL ARM AND CORNER PORTION BOTH INTEGRAL WITH THE RESPECTIVE SIDE AND A DOWNWARDLY PROJECTING ARM, SAID DOWNWARDLY PROJECTING ARM HAVING A WALL TURNED BACK SEMI-CYLINDRICALLY TO FORM A HALF SOCKET RECEIVING ONE OF THE LEGS, THE LATTER HAVING

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