Патент USA US2131326код для вставки
Sept. 27, 1938. R. C. KASTER 2,131,326 DUMP TRAILER Filed June 28,. 1937 BY‘pvv O ATTORNEYS V _ I _ Patented‘ Sept. 27, 1938 2,131,326 - UNITED ‘STATES PATENT OFFICE 2,131,326 DUMP TRAILER Raymond C. Kaster, 0lathe, Kans., assignor of one-fourth to Leo J. Pearce, Olathe, Kana, and one-fourth to A. E. West, Merrlam,vKans. Application June 28, 1937, Serial No. 150,713 ‘3 Claims. (01. 298-5) to the following speci?cation, alluding to the ac character particularly adaptable for attachmentI companying drawing, wherein: This invention relates to dump trailers of ‘the to tractors or any other suitable means of pull ing the trainer along, and the primary object is to provide in such a vehicle, means for moving the body thereof to dumping position merely upon backing the tractor to which the trailer Figure 1 is a side elevation of a dump trailer made to embody the present invention. Fig. 2 is a top plan view of the same, with parts OT broken away for clearness, and, Fig. 3 is an enlarged, fragmentary, detailed, is attached, after a releasable dog has been sectional view, takenon line III-HI of Fig. 2.‘ moved to an unlocked position. > In the preferred embodiment of the dump ' One of the important aims of the invention is trailer, exempli?ed in the accompanying illustra to provide a dump trailer of the aforementioned tions, a truck or- tractor 6, of-any conventional character, which has a pair of supporting wheels‘ and well known design is employed for'the pur movably carrying the trailer structure, and as, pose of drawing'the trailer. The trailer per se sociated with the body thereof in such fashion comprises a body 8 of suitable size and propor 15 as to permit the body to pivot about the axis of tions, that is equipped with an end gate l0, the wheels when the same are held stationary hingedly mounted about hinge pins l2 and held and when force is imparted to the specially con in the closed positions by a pair of latches ll. structed frame of the trailer in one direction so . These latches are secured to a transverse shaft as to move the body to the dumping position, l6, that is joumalled for rotation in frame I8. 20 said frame being arranged so that when force is A spring 20 yieldably maintains latches 14 in imparted theretoin the opposite direction, the the position illustrated in solid lines of Figs- 1 1.0 10 body is held against tippin . ' and 2 and where gate I0 is secured in place. ‘ A yet further object of the invention is the Body 8 is mounted upon a frame 22 which un provision of a dump trailer that has specially derlies body 8 and extends forwardly to form a v-shaped projection 24. Frame 22 carries a 25 pivotally interconnecting frame and yoke mem bers, the pivotal connection‘ Joining said mem pair of conventional leaf springs 26 that depend bers being between the normal forward end of below frame 22 and join axle 28 that extends‘ the body of the trailer and the single axle sup-. transversely across body 8, from side to side pgfting the body, and above the axis‘ of said thereof in a plane substantially mid-way be ‘ tween the ends of body 8. ‘This axle 28 carries 30 a e. . Still further aims of this invention include the a pair of wheels 30, equipped with conventional provision of strong and durable parts for the brake structure 32,_which includes the forwardly dump trailer above mentioned; the provision of extending cables 34 that are joined to transverse a novelly mounted, swingable end gate; the pro shaft 36 through the. medium. of clevises 38,. Upon rotation of this shaft 36, the brake struc-_ 35 vision of unique locking parts for releasably hold ing the body in a set position during transporta ture is set or released-as thejcase may be. A tion thereof; and specially related parts which, cable 40,. attached at one end to lever 42, is ex upon manual manipulation, will simultaneously 25 35 tended forwardly within reach'of the driver of ' ‘y ' . ‘ ~ move the latch for the gate and the locking dog ' the’ tractor 6. ' A spring 35, interposed between v. the two ' 40 for the body to the released position. stretches of cable 34, compensatesfor the change 40 Heretofore dump trailers have usually required . special power-driven means for tilting the body in distance between the axis of axle 26 tnd the to the dumping position. Such structure in ' axis of shaft 36 during operation of the dumping volves expense and loss of time in operation. structure through the use of brakes '32. ' In this The present invention obviates the necessity for connection it is obvious that the said distance 45 power-driven mechanism to dump the body of shortens when body 8 is tilted. ‘ The spring 35 is the trailer and utilizes specially constructed and closed in normal condition. When the brakes interrelated'parts that cause the trailer body‘ are set, the spring is'stretched to exert necessary and as the distance between axle~28 and to be carried to the dumping position merely pull shaft 36 is shortened due to backing and ‘tilting, upon securing the supporting wheels thereof spring 35 approaches its normal condition but‘!50 against rotation and then “backing" the truck all the while holds the brakes set until-1 the op or tractor. , 6 erator releases them. Any other suitable means Minor objects of the invention will become ob imay be employed to attain the same end, but the .vious to those skilled in the art upon reference parts disclosed embodying a working embodi ment of that feature of the invention. Also, any other suitable brake well known in the art may be employed. A U-shaped yoke 44 embraces frame 24 so that the legs of yoke 44 extend along the sides of frame 22, as indicated by Figs. 1 and 2. Pintles 46, pivotally join together the proximal sides of 1. A dump trailer of the character described comprising a body; a frame underlying the body and extending forwardly beyond one end thereof and formed to present a V-shaped projection; an axle 'and spring assembly supporting the frame and body, said axle extending transversely across the body therebelow substantially mid-way be frame 22 and legs of yoke 44. A coupling struc tween the ends of the body; a U-shaped yoke ture 48.serves to join together a part of tractor .provided with a coupling at the bight thereof and 10 6 and yoke 44 and the part of structure 48 that having the ends of the legs thereof pivotally 1.0 is carried by yoke 44 is located at the bight joined to the said frame on an axis between the thereof on the longitudinal center line of the said end of the body and the axis of the wheels trailer assembly. The point formed by the V and above said axis; and a dog releasably se shaped projection 24 of frame 22 is between the curing together the V-shaped projection and said 15 bight of yoke 44 and the forward end of body 8_ frame. 15 when the trailer is in the normal position. 21A dump trailer of the character described A sill 50, extending across from leg to leg of comprising a body; a frame underlying the body yoke 44, supports dog 52 that should be on the and extending forwardly beyond one end thereof longitudinal center line aforementioned. , This and formed to present a V-shaped projection; 20 dog-is mounted upon a shaft 54, journalled in an axle and spring assembly supporting the 20 bearings 5B,_as well as 'in one leg of yoke 44. A laterally extended arm 58, secured to shaft 54 near the outer endthereof, has a cable 60 fas tened to one end so that shaft 54 may be rotated by manipulating cable 60 from the driver's seat, 30 not shown. Spring 62 yieldably maintains dog 52in the position shown in Figs. 2 and 3. An other cable 64 interconnects arm 58 and latch l4 so that when cable 60 is pulled to stretch spring 62, both shafts 54 and [6 respectively will be rotated to simultaneously release dog 52 and ‘both latches l4. . done, the truckis backed so as to move in the direction of the arrow shown in Fig. 1, and the result is a tipping‘ of body 8 to the position shown in dotted lines. \ It is conceivable by one skilledin the art that the power imparting truck, tractor or the like might be rigidly incorporated with the dump trailer as a unit and the forward part of the frame 44 made as an integral part of any power plant having traction wheels capable of trans porting the body 8. In such instance, the piv otally interconnected frame and yoke would be_ come a jointed chassis. Manifestly, the relative location of pintles 46 55 with respect to the axis of axle.28, about which body 8 may swing when the wheels are “set” is .an important factor and permits both a tip ping movement when truck 6 is “backed” and 6.0 as across the body therebelow substantially mid way between the ends of the body; ‘a U-shaped yoke providedwith a coupling at the bight there of and having the ends of the legs thereof piv otally joined to the said frame on an axis be tween the said end of the body and the axis of the wheels and above said axis; and a dog releasably securing together the V-shaped pro jection and saidframe, said U-shaped yoke hav 30 ing a sill extending thereacross from- one leg ' to the other below the V-shaped'projection of ‘ In the operation of the dump trailer, and as suming that body 8 is ?lled with material to be dumped, it is only necessary for wheels 30 to be secured against rotation so that a “backing” of truck 6 will effect the dumping operation. Wheels 30 may be run against block 66 or brakes 32 may be set, whereupon cable 60 will be pulled to release dog 52 and latches l4. After this is v50 frame and body, said axle extending transversely the frame, said dog being mounted upon the said sill on the longitudinal center line of the body. 3. A dump trailer of the character described comprising a body; wheels supporting the body for tilting movement about an axis intermediate the ends of the body; a frame having a pair of side rails underlying said body and provided 40 with a V-shaped, forwardly extending portion in the same major plane as the underlying side rails; a U-shaped yoke having a bight and- a pair of parallel, spaced apart legs; a coupling on the yoke at the bight thereof for securing the same to a tractor; a sill bridging the space be tween the legs of said yoke’ between the bight thereof and the forward end of said body; a dog on the sill'on the longitudinal center line‘ of the body, for releasably engaging the apex of the 50 V-shaped forwardly extendingportion of the '1 frame; and means pivotally joining together the legs of said yoke and the proximal respective side rails of said frame, said side rails and legs of the yoke being in side by side relation through out a portion of their length, said pivotal con nection between the side rails and said legs of the yoke being approximately one third the assists in precluding a‘ tipping movement vwhen ‘ length of said body to the rear of the forward end of. the body, the forward portion of said 60 truck 6- is drawing the loaded trailer. Dump trailers having different forms and ap body being directly supported by the side by side pearances; than the one illustrated and described may be made without departing from the spirit portions of the side rails and legs of the frame ‘and yoke respectively when in the normal of the invention or scope of the appended claims. position. Having thus, described. the invention, what is . claimed as new and desired to be secured by ietters Patent isz' - ‘ ' , RAYMOND C. KASTER.