Патент USA US2128521код для вставки
Aug. 30, 1938. A‘. E, BECKMAN 2,128,521 SHAKE SPLITTING MACHINE Filed April 26, 1937 20/19/ :94 BY INVENTOR. AXEL E. . BECKMAN -. 72 ORNEY. Patented Aug. so, 1938 ' 2,128,521 UNITED STATES PATENT‘OFFICE 2,128,521 _ SHAKE-SPLITTING MACHINE Axel E. Beckman, Oregon City, on‘. Application April 26, 1937,‘ Serial No. 139,023 ‘ 4 Claims. (Cl. 144-193) This invention is directed to an apparatus for from the center with openings III, II, l2 and I3. the manufacture of shakes and is constructed These openings are designed to provide for the with a view to providing for the splitting from an connection of the pltman 8 to the power wheel 9 appropriate block of a‘ shake of the desired thick- and obviously provide for different length throws Q ness at the butt end and of tapering formation from the butt end. Heretofore, at least in the majority of instances, shakes have been formed by the use of cutting knives which are forced through the 1' block, or saws which operate on the block, with the disadvantage that in the ?rst instance the surface of the shake is naturally smooth and must be subsequently treated .to get the desired roughness or grain, and in the second instance. ll there is a considerable loss of material dueto the cutting width of the saw. ' - ' The primary object of the present invention, therefore, is the provision of a wedge-shaped splitting element which may be forced into the M block and split therefrom a shake of the desired or movements of the bars 8. - ' 5 The bars 5 are provided near their upper ends with channels '28 to receive cross-bars l4 which are thus mounted to be adjusted longitudinally of the bars 5 so that the space between any pair of cross-bars 14 maybe adjusted. In the in- 10 stance shown, there are two sets-or pairs of such cross-bars l4 and the space'between these bars is to be regulated through positioning in selected channels 28 to receive the length of block I5 from which the shakes are to be split. The block is 15 positioned between the side bars 2 of the frame and between a pair of cross-bars l4, thus ‘permit ting the block to be merely placed in position, provided, however,-that if desired holding blocks 21 may be mounted upon the blocks l5 and pre- 20 thickness at the butt end, tapering from such vented from endwise movement though permitted butt end and having the natural rough grain adjustable vertical height, to accommodate the ?nish by reason of its being split from the block rather than out therefrom. a The invention is illustrated in the 'accompany- ing drawing, in which: Figure 1 is a perspective view of the apparatus as a whole. . blocks originally and as they are split away, by pins projecting from the blocks 21 and guided between uprights 29, as clearly illustrated, as the 25 cross-bars prevent endwise movement -'of the block during operation of the machine. The block of material is loosely con?ned be Figure 2 is a longitudinal sectional view of the a machine shown in Figure 1. Figure 3 is a similar view showing the splitting tween the bars M, at the same time the bars act as abutments for the block at the time the wedge 30 splits a shake. In order to facilitate the split implement entering the block from the end opposite the operation indicated in Figure 2. Figure 4 is an enlarged sectional view on the “ line 4-4 of Figure 2. . ting action and enable the wedge to follow the grain of the wood and thereby properly shape the shake, the block of material tilts slightly. Secured to the longitudinally operating bars 6 35 Figure 5 is a transverse section through the apparatus on the‘ line 5-15 of Figure 2. Figure 6 is a broken longitudinal section, partly in elevation, of the apparatus. Figure '7 is a broken elevation showing the means for providing adjustable stroke lengths of appropriate length of metal having rather abrupt ends terminating at each side edge in a splitting edge H which is naturally sharpened. The thickness of the splitting element l6 increases 40 from the abrupt side edges or ends toward the the slide bar. center, being thicker'at the center, as indicated at _ Figure 8 is a transverse section of the splitting - tool. ‘5 is a splitting element It, which element is an IS in Figure 8. Beyond the splitting element, the bars 6 are The construction providesaframe including an connected by a supporting plate IS. The sup- 45 upper box-like body I having'side walls 2 and end porting plate is secured to the under side of the walls 3, with the body supported upon appropri- bar but is presented with an upstanding offset 2!] ate legs. Side walls 2 are provided on their in-_ fitting a recess 2| in the inner surfaces of the nor surfaces with longitudinally extending ver- bars 6, so that the supporting plate is on a hori 50 tically spaced bars 4 and 5 providing between zontal plane below that of the splitting element 50 them channels in each of which are mounted which is secured tothe upper surfaces of the bars slide bars 6 united at one end beyond the frame 6. The splitting wedge has its end seated in a in a connecting plate 1 to which is pivotally con- transverse recess 22 in the upper surfaces of the nected a pitman 8. A belt or other power-driven bars 6, being secured by a bolt 23, the lower end of I‘ wheel 9 is formed at different radial distances which is provided with a securing nut 24 seated 55 2 2,128,521 in an opening 25 in the lower surfaces of the bars 6. ‘The connection described, and which is shown more particularly in Figures 4 and 5, per mits vertical adjustment of the splitting element as a whole in order to select a desired thickness of the butt end of the shake to be produced. In the instance shown, the machine is designed for two blocks and the splitting element [6 and supporting plate i9 will be duplicated, as indi~ 10 cated in Figures 2 and 3. In operation, the blocks l5, or one such block if only one is to be used, are placed in position between the appropriate pair of cross-bars i4. bar and spaced apart to provide a guideway, slide bars movable in the respective guideways, a split ting tool arranged transverse and connected to the respective slide bars, the ends of the tool ?t ting in notches in the respective slide bars, with the notches of a depth exceeding the maximum thickness of the tool to thereby accommodate and provide for vertical adjustment of the tool with respect to the slide bars without projecting the tool above the upper surface of the slide bars, a 10 material block supporting plate connected to the ' respective slide bars, said plate having offset ter minals secured to the lower surfaces of the slide These cross-bars have been adjusted to prevent ' bars, with the offset terminals of a depth to undue endwise movement of the block in‘ the hold the supporting plate in a position below any splitting operation and the block in position rests possible position of the tool in the slide bars, 15 upon the particular underlying supporting plate means for reciprocatitng the slide bars to simul I 9. In the driving of the power wheel 9, the bars taneously operate the tool and supporting plate, 6 are moved in one direction, the splitting ele the upper guide bars being formed with a series 20 ment is caused to enter the end of the block, but of notches extending longitudinally of said bars, 20 incident to its construction, compels a splitting and cross bars loosely ?tting similar notches of operation rather than a cutting operation. the respective guide bars to hold the material This splitting operation incident to the forma block against longitudinal movement on the sup tion of the block follows the grain of the block porting plate during operation of the knife. 25 in a taper, so that the resultant shake is tapered 2. A construction as de?ned in claim 1, includ from one end to the other. As the splitting ele ing holding blocks to rest upon the upper surface 25 ment moves through the split and beyond the of the material block and means carried by the block at the opposite end, the corresponding upper guide bars for preventing longitudinal movement of the supporting plate i9 permits the movement of the holding block without interfer 30 split shake to drop free of the plate into a pile in ing with free vertical movement thereof. the lower portion of the frame. The splitting ele 3. A shake making apparatus, comprising a ment is now beyond the opposite end of the block frame, upper and lower guide bars secured on the and as the movement of the power wheel is con inner surfaces of the frame and spaced apart to tinued, the bars 6 are moved in the opposite di form guideways, slide bars movable in the respec 35 rection and a second shake is split from the block tive guideways, a wedge arranged transverse and 35 with the butt end at the opposite end of the block. connected to the respective slide bars, a material Thus, in a reciprocation of the pitman, two shakes block supporting plate connected to the respective are formed, as will be plain from Figures 2 and 3 slide bars, the upper surface of the plate being of the drawing. Furthermore, if two blocks are below the path of movement of the wedge and used and the splitting element and supporting spaced therefrom, means for loosely con?ning a element are duplicated, the apparatus will form two shakes at each movement of the supporting bars 6 or four shakes in each complete recipro cation of the bars. 7 If longer shakes are to be produced than the minimum for which the machine is adapted, the cross-bars I 4 are adjusted to accommodate the greater length of block and the vertical position of the splitting element I6 is adjusted and through the obvious use of supporting means in the channel 22 below the connected portion of the splitting element, so as to increase or decrease the thickness at the butt end of the shake for providing the different desired lengths of shake. It is to be particularly noted that the splitting elements do not cut the material. In cutting through the material of the block, there is neces sarily approximately the same thickness of mate rial of the block divided by the cutting whereas through the use of the improved splitting ele ment, which splits and does not cut, it will be apparent that the wedge formation of the split ting element causes that portion of the block di vided by the initial split to be iorced to bend downwardly, thus splitting the shake from the block ahead of the splitting element, resulting in a breaking of the fiber and bringing the shake to the desired taper and presenting at the same time that desired roughness or grain-showing highly desirable in articles of this character. What is claimed to be new is: 1. A shake making apparatus including a frame having side and end bars, upper and lower guide bars secured on the inner surface of each’ side material block on the plate to permit a slight movement of the block in the direction of move ment of the wedge and tilting of the block in the formation of a shake, whereby when the wedge is advanced toward the block of material on the 40 plate, the wedge will split a shake from the block, 45 the forward end of the shake passing between the plate and wedge and the block falling in position for formation of a subsequent shake. 4. A shake making apparatus, comprising a frame, upper and lower guide bars secured on the inner surfaces of the frame and spaced apart to form guideways, slide bars movable in the re spective guideways, a two-edge wedge arranged transverse and connected to the respective slide bars, a material block supporting plate con-4 55 nected to the respective slide bars, the upper surface of the plate ‘being below the path of movement of the two-edge wedge and spaced therefrom, means for loosely con?ning a material block on the plate to permit a slight movement of 60 the block in the direction of movement of the wedgev and slight tilting of the block in the for mation of a shake, means for reciprocating the two-edge wedge whereby when the two-edge wedge is advanced in one direction toward the block of material on the plate, the wedge will split a shake from the block, the forward end of the shake passing between the plate and wedge and the block falling in position to be acted on in the reverse movement of the wedge in the formation of a subsequent shake. . AXEL E. BECKMAN.