oct; Y22, 194s. ' F. D. wuLFF 2,409,921 ~ ' l GAUGING MEANS FOR LAWN _ MOWERS Filed Nov. 25, 1944 Zzgl' j." ,3 43g îä 4 á . I fünf/2e@ Patented Oct. 22, 1946 2,409,921 _» i UNITED _STAT PATE-NT Aorifice ’ i ' IGAUGING MEANS Fon-LAWN MoW‘ERsj "i `Framing Wulff, chieagem. ` . Application November 23, 1944. serial No. 564.336 ecieims. (c1. ss-‘isn . The present invention l.relates to devices for intermediate part of the member-I is provided setting or gauging the relation of cutting blades of lawnmowersand the like. .- ; . I i i an elongated slot B. , A V Y The member 2 has at its ‘lower end laterally extending and reversely curved guide flanges 1 and 8 adapted to encompass the edge portions of `Among the objects of the invention is to pro vide a novel gauge-type setting device for even ing the setting or relation of the rotary blade or the member I and to slide along the same. Near or at the lower end of the member 2 is provided blades with respect to the stationary bladef or the like of a lawn mower, and comprising rela a laterally orrearwardly extending toe part or projection ElV which may have a flange or leg IIJ -tively adjustable parts of which one part may be contacted with the stationary bladeand the other part contacted with the shaft of the rotary blade means whereby both ends of the blades may be adjusted to be even and in accordance suitably secured to _the member 2. At theup per end ofthe member 2 is provided a laterally extending ñnger‘or flange part I I which serves asa linger coordinately with the flange 5. By with the adjusted setting of the gauge. i l . pressing the finger pieces 5 and II, between the Another object of the invention is to provide 15 thumb and finger-of the user, the members are a novel device of the character disclosed V_and caused to relatively slide. which may have also contacting means on one of At an intermediate part the member :2 has `a the members which may be set against- the edge of the rotary blade to gauge the position of the contacting member to contact the Vcutting edge of the stationary‘blade and still have the other contacting member in contact with theV shaft, threaded element I2, which may be in the form of a nut,` suitably» secured to the member 2 as 20 by way of solder I3 or the like. This element I2 ' is located to have its threaded part opposite the slot „5 and asuitable hole I4 provided in the member `2. In threaded'enga‘gement with this element I2 is _the threaded stem I5 `of a ñnger the contacting surfaces of the two ñrst-mentioned contacting elements being in a common plane. OtherA objects, advantages, capabilities, features and the like are-comprehended by the invention 25 clamp having' a linger piece I6 and a thrust col lar or head I1 adapted to clamp on the member as will later appear and as are inherentlypos I, the stem I5 passingthro'ugh the slot 6 and sessed Referring by thebriefly invention. to the drawing: . . „_ the >opening'lll, as's’howmto hold the members I , l j - and' 2 in adjusted relation. Fig. 1 is a side View in elevation of the»` device; 80 constructed in accordance with the ?invention; ì „ ` ‘ The device is particularly >adapted to be used 1» with the cutter means of a lawnV mower or vthe Fig. 2 is a front view thereof; like,l and, >as'shìmvr’i-in4 Fig. 1, such means com Fig. 3 is a rear view thereof; prises a relatively ‘stationary blade I8 carried by Fig. 4 is a' part sectional view, on an enlarged or fixed to a blade holder I 9 supported on a shaft scale, taken in a plane represented by line 4-4 35 20 carried by the frame 2I of the mower. The in Fig. 3 of the drawing; frame 2| also carries a bar 22 which may be ñxed Fig. 5 is a transverse sectional view taken in a to the frame and in «this bar are adjusting screws plane represented by line 5_5 in Fig. 3 of the 23 the ends of which are adapted to engage sad drawing; dles or shoulders 24 provided on the holder I9, Fig. 6 is a perspective view of a part of the 40 as shown in Fig. 1. By adjusting the screws 23, device; and ' the angular relation of the holder I9 and the Fig. 7 is a perspective view of another part of blade I8 relative to the axis of the shaft 20 may the device. be had as desired so that the blade I8 will be Referring more in detail to the drawing, the in proper shearing position for the cutting blades. device is shown as comprising a pair of relatively 45 On the frame 2| is also mounted a shaft 25 for slidable elongated members I and 2 of which the rotatably carrying a rotary blade holder 26 to member I. has at its lower end a heel part 3, which is secured one or more blades 21, the cut adapted to contact the edge of the stationary ting edge 28 of which travels in a circular path blade when in use as later explained, and a lat represented byv the arrows 29 to have shearing erally extending toe part 4 adapted to contact 50 function with the cutting edge 30 of the station the upper face of the cutting edge of the sta ary blade I8, as shown in Fig. 1. tionary blade adjacent its cutting edge, and at The device of the present invention is used to its upper end with a laterally extending finger gauge the relation of the cutting edge 30 in or ñange part 5 to serve as a iinger piece when proper shearing relation with the cutting edge adjusting the device as later explained. At an 55 28. 'I‘his is eifected by ñrst adjusting the position 4 3 tion for longitudinal sliding movement with of an end of the blade I8, by way of adjusting the screws 23 at each end of the blade I8, so that the corresponding end of the blade 21 will have the desired position or shearing relation of the cutting edges 28 and 3i). Then the device of this invention is applied in place by resting the toe 4 on the cutting edge 30 and then by moving the member 2 with the guide '1_-8 upward along the respect to each other, one of said members hav ing a laterally-extending toe adjacent the lower end thereof with a flat lower surface adapted to be placed on the upper surface of the stationary blade of the mower and having a laterally-ex tending finger piece at the upper end thereof; the otherof said members being of lesser length than said first _mentioned member and1 having a memberll; to bring .the> toe 9 into contact `_with the shaft 25, and then the screw I5-I-6 is 10 laterally extending toe adjacent the llower end thereof disposed at that side of the assembled tightened to hold the members I and 2 clamped together. This device is then moved to the other t f = members opposite that from which the toe on the first-mentioned member extends, said toe of the end of the blade |18 to place the toe 4 `on xther second-mentioned member having a flat' upper edge Se at such end of the blade and then toe 9 isswung to position under the shaft-„25. 'Ifthe y15 surface adapted to be placed beneath the shaft of the rotary blade of the mower, and said toe 9 contacts the underside .of the >shaft 25., the cutting edge 3l) is in correct position.- If thetoe second-„mentioned member having a laterally 25 the screwsl3 areE A extending finger piece at the upper end thereof 9 is spaced below the shaft Y and disposed at the same side of said member as adjusted to raise the blade I8 until the toe 9 contacts the underside. 0f the Shaft 25,; and if the toe 9 is too high to come under the _shaft 25 .the screws ¿23 are >soY adjusted as to lower the blade I8 îuntil the toe can V.come just under the shaft 25. The device also may have fixed to the lower end portion or heel ilV another toe 3l having its upper surface 32 inthe same plane as the lower surface of the toe ¿,¿and this toe 3l may Yhave a flange 33 suitably securedto the lower end part of the heel 3'. This toe 3l is ¿used by bringing the upper face 32 thereof lagainst the cutting edge _2B of the rotary blade 21 and then adjusting the toe 9 to contact with the underside of the shaft 25, whence the lower face of the toe 4, being in the same plane as the face 32,l will be at the correct position to coincide with or contact the edge 30 of the blade I8.- If the edge 30 does not so _con tact, then the screws 23y will be so adjusted as to effect such contact. Therefore, .adjustment may be effected in this manner at both ends `Gaf the blade 28 and the blade 21. - e . While I have herein described and upon the drawing shown an illustrative embodiment ofthe invention it is to be understood that the inven tion may comprehend other _constructionsy details, arrangements of parts, features and the like with. out departing from the spirit of the invention. Having thus disclosed the invention, I> claim; 20 the laterally Vextending .toe thereof; one of said members having relatively short laterally-.ex tending, reversely curved .guide flanges .along the side edges thereof engaging the side edges of the other member to maintain the members in as sembled relation and to permit longitudinal sliding movementof said members with respect to each other; and clamping means connected to said members for holding them in adjusted rela~ tion, said clamping means comprising a threaded 30 part fixed to one of said members, a clamping element threaded into said part and extending through an elongated slot provided in the other of ysaid members and also ‘having aclamping head for clamping »engagement with said last-men tioned member. ` Y 2. A gauging device as defined in claim 1 where in the finger piece at the upper end of the first' mentioned member is disposed at the same' side of->` the assembled members as the finger piece at 40 the upper end of the second-mentioned mem.-> ber, whereby said finger pieces may be‘readily engaged by the thumb and ñnger of an operator' to effect relative sliding movement of the mem ’ bers when the clamping means is released.V 45 3'. A gauging device as> defined in claim «.1 where in the first-mentioned member has a second» laterally-extending toe adjacent >its -lower end and LA gauging means for al lawn mower which disposed on that side» _of said member opposite to has a frame Carrying a relatively adjustable sta the other toev there'onf-the upper surface of- said tionary blade and a rotary blad-e ¿rotatable on 50 second toe being flat and ¿in the same plane as therf a shaft _carried by said frame; `said gauging lower flat surface of saidother toe.' means comprising two relatively fiat and clon-. gated members assembled in face-toeface rela?