UNIVERSITY OF CALIFORNIA COLLEGE OF AGRICULTURE AGRICULTURAL EXPERIMENT STATION BERKELEY 4, CALIFORNIA A TRANSPORT BUCK RAKE C. E. BARBEE 1 and C. LORENZEN, JR. 2 A rugged , flexible transport buck rake to use on diversified and dairy farms for carrying hay from field to barn, stack, or other destination, has been developed by the Division of Agricul- tural Engineering of the University of California. The complete assembly, mounted on a truck, is shown in the photograph on page 1. Its particu- lar type of mounting on the rear of a truck chas- sis allows lifting of the load sufficiently to prevent dragging of the hay, provides clear vision ahead, and permits easy maneuvering of the the truck are required, and the rake may be re- moved readily to allow use of the truck for other work. Details of the lifting mechanism and controls are shown on page 3. The brake drum, D, is removed and the brake-band cam, C, is reversed; the drum is then replaced. This permits the bands on one drum to expand while those on the other drum are loos- ened. The control lever, H, moved forward, ro- tates the torque tube, A, and levers, B, to tighten the band, F, and loosen the band, G. This truck around buildings, through gates, etc. This construction also allows proper functioning of the engine radiator by leaving the front end of the truck unobstructed. The rake is loaded by backing into the windrow or shock. Larger loads may be handled by previously bunching the hay in- to properly sized shocks. The rake is designed for a ls-ton truck, and use of a lighter chassis is not recommended. Lift is obtained through a Model A Ford drive shaft, differential, and rear axle assembly. This as- sembly is set on top of the truck frame as shown in the rake plan drawing on page 2, and is driven by power from the motor. The drive shown is by chain and sprocket from a power take-off on the side of the transmission, although other methods, such as a jack shaft and pulley driven by the fan belt, may be employed. No other changes in a Associate in the Experiment Station. 2 Associate in Agricultural Engineering and Associate in the Experiment Station. transmits power to the drum, D, to which the rake lift-cable spool, J, is welded. Movement of the control lever backward releases the brake drum, K, and permits lowering of the rake against the brak- ing action of the band, G_. It will be noted that the levers, B, are placed up and down on the oppo- site ends of the torque tube, A, so that the link, E, is in tension on the side on which the load is applied. This makes the light link sufficiently strong for the applied loads and prevents its buckling. Drive ratios should be such that the lift-cable spool does not turn faster than 200 revolutions per minute. A feature of the rake is its mounting on the truck chassis. The short side arms shown in the rake plan (page 2) allow the teeth to rest flat on the ground and make the rake more or less flexible when riding over the ground during load- ing. In lifting, the rake head rises first until the side arms contact the head crossbeam and then the whole rake comes up. This permits control of [1] >. ^ Dotted lines show/vke in raised position. \\\ Uftorm. Lift chain Side teet. Rake teeth. Rake 5/de LT/evetion Rake mount. Side arm. ^£"*2x 7" H.B.Steel p/afe Rake head cross beam. ^c IS^^ ^Ld Fin Tooth Point Detail Lift cable spool J lAtfzTC: -7-0- - 9 :oi Drive shaft and differential 'assbity. Rake Pfo/i Head frome x \ msm Reot lift yoke. Rake supporibndd^-^ o IOJ IUJ &U ufl EJ lo-o Rake End Elevation Lift Mechanism and Control. Side teeth\ i\8" Rake teeih 2" plywood Rake Frame Detail. ^rdia hoie We/d~. Lift arm. Top bracket. F/a/tyed 1 Co//ar. 2. required. qr std.pipe. -Lift arm drat Lift Arm Bracket Assembly §'dia. holes for boiling bracket to track frame. 2 standard pipe. Note Both mounting brackets are tve/ded to ends ofth/splpo w/i/ch extern/* across cnoss/s frame. J- dia hole. welded to verfico/ '/nemier Mounting Brocket -g" N.R. Steel 2. re aw red Roke frame mounted on 1% $td. £'d,*/>o/