US2372120A - Rotatable truck standard - Google Patents

Description

March 20, 1945. M. ROBERSON ROTATABLE TRUCK STANDARD Filed Sept. 30, 1943 dorm/ 2 M 2066x100 Patented Mar. 20, 1945 UNITED STATES PATENT OFFICE ROTATABLE TRUCK STANDARD Lonnie M. Roberson, Dubach, La.

Application September 80, 1943, Serial No. 504,509

4 Claims. (Cl. 280-145) My invention relates to truck standards and more especially to tiltable standards provided with locking means for locking them in vertical position.

An object of my invention is to provide a rotatable type standard that may be locked in a vertically upwardly extending position yet capable of being revolved downwardly to a hanging position.

Another object of my invention is to provide a rotatable standard with a concealed locking means to prevent the standard from being inadvertently released.

Another object of my invention is to provide a simple compact rotatable standard that is adapted to be mounted on the bodies of trucks now in use.

Other objects and advantages of my invention will appear from a reading of my detailed description of a truck standard embodying my invention which I have illustrated in my drawing accompanying this specification.

In my drawing:

Figure 1 is an end elevation view of a loaded truck that is equipped with a rotatable standard structure. embodying my invention,

Figure 2 is an enlarged vertical cross sectional view taken on line I--I of the standard structure illustrated in Figure 1,

Figure 3 is an enlarged vertical view of the standard illustrated in Figure 1,

Figure 4 illustrates a modification of one of the members of the standard illustrated in Figure 1 and,

Figure 5 illustrates a modification of one of the members of th standard illustrated in Figure 1 In the drawing numeral I designates generally a. bracket plate of which there are two mounted in parallel relationship on the bolster B or the truck T. Only one of these bracket plates I can be seen in Figure 1 and Figure 3. Both, however, are to be seen in Figure 2.

The bracket plates Ihave their outer edges 2 spaced close enough to the center line passing through the axle holes 5 at their bottoms and the latching notches l at their tops to permit the standard 8 to be revolved to the dotted line hanging position shown in Figure 1 as will be more fully explained later. The standard supporting axl 6 on which the standard 8 is rotatably mounted between the bracket plates I is extended through the axle holes 5 and secured in place by means of the nut I. The standard I is provided with a partition 8 near its upper end. to form a socket in the upper end of the standard 8 to hold 55 a standard extension S if desired. The standard extension S may be secured in place by a pin or bolt extended through the securing holes Ill. A skid pole may also be secured to the upper end of the standard 8 by means of a pin or bolt secured in the securing holes III.

The standard 8 is also provided with a latch releasing hole II and a pair of oppositely spaced latch bolt slots I2 in which the latch bolt Il carrying rotatable collars I4 is slidably mounted.

The rotatable collars II are adapted to drop. down into the latching notches 4 to latch the standard 8 in vertically upwardly extending position as best seen in Figure 3.

While my invention in movable truck standards includes more structure than has thus far been described above, the above described structure does constitute a novel workable movable truck standard. The force of gravity acting on the latch bolt l3 and the rotatable collars ll carried by the latch bolt I 3 can be relied upon to hold the rotatable collars II in the latching notches 4 under ideal conditions. The latch bolt II carrying the rotatable collars ll could be lifted by hand.

However, I have provided in my movable standard structure a tension spring I! for positively holding the latch bolt I 3 and the rotatable collars II down so that the rotatable collars It could not be jarred out of the latching notches I when the truck T loaded with logs L travels over rough roads commonly met with in the logging business. The spring I1 is hooked over both the standard supporting axle 8 and the latch bolt I! while under tension.

The latch bolt I3 extends through a lifting sleeve I5 which is loosely and slidably mounted inside of the standard 8 and which is provided with a lifting bail I8. The top of the lifting bail I6 is aligned with the latch releasing hole II to permit it to be moved upwardly by lifting rod R extended through the latch releasing hole II, as see Figure 2. When the lifting ball I and the lifting sleeve I5 connected to it are moved upwardly to the dotted line position the rotatable collars I4 are lifted up to a position where they clear the latching notches l to permit the standard 8 to be revolved downwardly, as best seen in Figure 3.

when the standard 8 is revolved downwardly the lower sides of the rotatable collars I describe an arc whose radius is r. As previously explained; the bottoms of the rotatable collars II clear the outer edges 2 or the bracket plates I to permitthestandard 8 tobeswungthrough the horizontal position to the hangingposition.

In the operation of resetting the standard 8 into latched position the rod B does not have to be used. When the standard I is revolved upwardly the bottoms of the rotatable collars I l contact the cam curves I and are lifted by them against the tension of the spring ll onto the top of the bracket plates 1. When the standard 8 is brought into the true vertical position, the rotatable collars ii are snapped down into the latching notches 4 by the spring I11, and this is the locked position of the standard 8.

While my drawing shows the bracket plate i as being welded onto the bolster B it is to be understood that the bracket plates 8 could have been made as extended unitary portions of the bolster B. When my movable standard is tobe attached to a wooden bolster, the modified form of bracket plate shown in Figure 4 should be used as this form of bracket plate is provided with a fastening plate extension la with perforations lb through which bolts or lag screws may be extended.

-When my movable standard is'to be attached to the side of a truck body. the modified form -oi bracket plates shown in Figure should be used in which modification the bracket plates l are Joined together by the web lc having periorations Id. If the side of the truck is faced with metal, the web lc may be welded directly to it. If the side of the truck presents a wooden surface, the web lc may be fastened to the truck body by means of lag screws or bolts extended through the perforations id.

Having thus described my invention, I claim:

1. The combination of a base member adapted for attachment to a truck body or the like, a rotatable standard rotatably mounted on the base member in a manner to permit the standard to be rotated from a hanging position to a vertically upwardly extended position, said base member said sleeve being slidably mounted on said stand ard. said extended portion or said latch bolt helm" adapted to engage said latch recess, said latching means including a spring adapted to hold the latch bolt in said latch recess, said base member including a cam positioned to raise and guidesaid latch bolt into said latch recess while the stand ard is being revolved from a hanging position to an upwardly extended position.

2. The combination of a base member adapted for attachment to a truck body or the like, a rotatable tubular standard rotatably mounted on said base member, said base member including a pair or parallel vertically extended flanges previded with latch recesses on their upper edges between which flanges said standard is rotatabiy mounted, a releasable latching means mounted on said tubular standard adapted to hold said tubu= lar standard in an upwardly extended position with respect to said base member, said latching means including a latch bolt adapted to fit in said latch recesses slidably mounted in a pair of slots extended through opposite wall portions of said tubular standard, said latch bolt being carried by a tubular sleeve through which it extends in a crosswise direction in a snug fit, said tubular sleeve being slidably engaged with said tubular being provided with a latch recess, a releasable 1 latching means mounted on said standard adapted to hold said standard in an upwardly extended position with respect to said base member, said latching means including a latch bolt, said latch bolt being carried by a tubular sleeve through which it extends in a crosswise direction with a portion of the bolt extending outside of said sleeve,

standard, said latching means including'a spring adapted to releasably hold the latch bolt in said latch recesses and a means for lifting the latch means including a bail attached to the latch means extending from the latch means within said tubular standard.

3. The device as claimed in claim 2, wherein said sleeve and said bail are both positioned inside of said tubular standard and substantially hid from view, said tubular standard being provided with a hole positioned in alignment with said ball to permit a rod to be extended into the tubular standard under said bail to make use oi said tubular standard as a fulcrum for liiting said ball and latch means attached to said bail.

4. The device as claimed in claim 2, wherein said base member includes a cam positioned to raise and guide said latch bolt into said latch recesses while the standard is being revolved into an upwardly extended position.

LONNIE M. ROBERSON.

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