Патент USA US2121867код для вставки
June 28, 1938.l E. s. GAND'RUD ` 2,121,867 LAND MEASURING INSTRUMENT Filed Aug. 20, 1936- NN 4 Sheets-Sheet l l June 28, 1938. ` E. s. GANDRUD v 2,121,867 LAND MEASURING INSTRUMENT Filed Aug. 20, 1936 4 Sheets-Sheet 2 - June ¿28, 1938. E, Q_ GANDRUD ` \ y 2,121,867 LAND MEASURING INSTRUMENT ' Filed Aug. 20, 195e 4 sheets-sheet :5 June 28, 1938. Ars. s. GANDRUD ' ` 2,121,867 LAND NEASURING INSTRUMENT Filed Aug. 2o, 193e ‘i ` _ 4 sheets-sheet 4 741 MM Patented June 28, 193s > .2,121,867¥ UNITED STATES PATENT OFFICE i " Ebenhard S. Gandrud, Pipestone, Minn. Application August 20, 1936, Serial No. 96,977 l ' 5 claims. (c1. 33_141) My present invention provides an extremely simple and highly efiicient low cost land >measuru ing or surveying instrument. Generally stated, theinvention consists of the novel devices, com UK ïbinations of- devices and arrangement of parts hereinafter described vand defined in> the claims. Fig. 7 is a detail with some pai‘ts sectioned on ` ‘ and immediatelyV associated parts, some (parts >being broken away; , ~ ~ Fig.- 9 is a View corresponding to Fig. 8, but» with the. Wheel spokes and various other parts removed so as to show the star wheel'of the count' er and> the co-operating tappet carried by the handle bar or device that serves as a handle for running the wheel over the ground and as a staff for n supporting the transit. These several in wheel hub; . . . > Fig. 10 is a section taken on the line Ill-_l0 of Fig. 8, some parts being shown in full; Fig. 11 is a fragmentary View in side elevation showing the wheel spokes separated from. the wheel hub and disconnected, the one from the strumentalities are combined in such a way that the instrument may, without addition or substi ï tution of parts or.- readjustments the one in re spect to the other, be used at will for thelineal measuring of the land or for the ordinary work other; ' ~ Fig. 12 is an elevation showing the instrument as it will appearV when the combined staff, and operating handle is set vertically so as to present the transit for use; performed bythe use 'of a surveyor’s transit. 'I'he instrument is accurate enough for ordinaryY 20 purposes, and will be found very generally useful for the quick and substantially correct measur-. Fig. 13 is a plan View of the transit; Y Fig. 14 is a fragmentary section taken on th ~ ‘ ing and surveying of-land. " The measuring wheel may be made invarious sizes, but for general purposes, will have a cir- » rod, which is the customary dimension of meas urement‘used in landl surveying.Y For some pur ` Fig. 8 is a left side elevation of the Wheel'hub ister of the-rotationsrthereof, a transit, and a .2.5 »cumference of siXteen’and one-half feet orone v the line 'l--l of Fig. 6; More specifically stated, my invention, 'in its pre ferred form, involves a measuring wheel,.a freg ,V10 ' line lll-_i4 of Fig. 13; ' . . ' modification of the wheel hub and spokes; 25 Fig. 16 is ajfragmentary view showing. the rim and spoke structure of the modification> illus- T Y, , . , poses, the wheel `may be maderas an integral or trated in> Fig. >15; ,non-folding member; but ras an additional'feature. v » Figi »17 is a transverse section taken on 30 .fof novelty, the wheel maybe made foldable so ` line I'l-l‘l of Fig. 15;l and that it will occupy a less> space in shipmentror storage. . . » ¿ Commercial forms ofthe device are illustrated in the accompanying drawings `wherein like char-` 35 - acters indicate like parts- throughout the several views. , _ ' Y Referring tothe drawings: , , , Fig. lis a right side elevation showing the corn plete measuring instrument;` . v 40 ' `Fig.-2 is a detail in sectionron the line 2--2 of Fig. 1; » '~ , ' ~ ` . . Fig. 3 is a fragmentary viewshowing a hinge joint found in the vicinity of the line markedii-B onFig. 45 , 1; " ‘t . ' " Í - Fig. 4 is a fragmentary sectionon the lined-4 of Fig. 1;V j , n v »l j Fig. 1, some parts being broken/away and the Y, parts `beingsh'own on"a\1arger"scale than in' `55 ` ` f5 In the structure illustrated in Figs. 1 to 14, ‘Y inclusive, the wheel is arrangedto be folded into> quadrants or Afour sections, and this structure will first be described. The wheel rim 2l is made 3.54~ up of four sections connected by hinge joints 22, 23, 24 and 25, which hinges are located 90° apart. 'I'he hinges 22, 23 and 24 are alike and project from the same side, While the hinge 25 projects 40.. from the opposite side, this beingY done for >a purpose which will hereinafter appear. The wheel is shown as provided with four spokes. 26 v that are offset 'from -lines'radiating from the axis ofthe wheel and are brought together in an 45 flange 21„as shown, has fourprojecting arms; but f 30, ' >the projecting flange 21 of the wheel'hubV 28.,A The Fig. 6 is a section taken on the line 6_6 of l f inner ends are rigidly but detachably secured to Figi’ >5,is’a planview vof vthe parts shown in l - offset rectangular arrangement, and these offset ~ Fig.'_1,'except that the headof the transit has been removed :from'the combined staff Vand oper-r ating handle; theV Y ’ .Fig 18 Aillustrates a stillfurther modification of the wheel hub. - ' ' Fig.,15 is a fragmentary view illustrating the l_of course the structure Vmay be varied.v -The wheel rim sections 2l and spokes 26 are prefer ably steel tubes. The spokes k26 attheir inner ends, see particularlyFig, 11, are provided with „ projectinglugs 29 through which and the hub Vflange 21 nut-equipped bolts,_3_û are app1ied._` 2,121,867 2 equipped bolt 32, see particularly Fig. 10, is rig semi-circular arrangement. This wheel has three spokes 53, the inner ends of which are Vrigidly secured to the flange 21a of a wheel hub 28u idly clamped to a bar 33 that isV supported as presently to be described. A flange 21 of the of which is hinged to an ear 58 on the hub flange The wheel hub 28 is shown as directly jour naled on a tubular spindle 3l which, by a nut and has a fourth spoke 51, the inner end 5'!a wheel hub is shown as providedV with an an nular flange 34 that añords a weed guard for a counter` star wheel which is positioned within said weed guard, see particularly Fig. 10. This counter may be, and preferably is, of the well; known type used in connection with bicycles, and for the purpose of this case, it is only de sirable to designate the counter casing 35 and its star wheel 36. The casing 35 has a ñange 15 3'! that is rigidly clamp-ed to the bar- 33 by the nut of the bolt 32. For operating the star Wheel and through the mechanism, recording each rotation of the meas uring wheel, the wheel carries a tappet. VThis 20 tappet, as shown, is in the form of a stud or linger 38, Vsee Figs. 9 and 10', carried. by a small» sleeve 39 that is mounted for radial adjustments of semi-circular rim sections 2|a that are con nected at diametrically opposite points by hinge 15 lugs 50, see Fig. 16. Fig. 18 shows the hub of the measuring wheel which will have an integral or continuous rigid rim supported by spokes 5l that are rigidly se cured to the flange 62 of a hub 63, and which 20 hub is adapted to be supported in the, same man Directing attention now particularly- to Figs.. 5, 6,. 7 andV 12, it will. .be noted. that the bar 33 ner as the Wheels previously described. rFne use and operation of the surveying in strument is probably obvious fromy the foregoing statements, but may be briefly summarized as 25 follows: The surveyor or operator Walking along tachably` secured. to the. yoke-like. projection M of him, and this wheel under the ground frió of a staiî or rod; ¿i2 Vthat servesv as a combined for each’rotation of the wheel and which, of 30 on a rod 55, the ends of which. arev secured to the wheel hub and to its flange 34. 25 21a. The hinged spoke 5l is adapted to-'be rig idly locked to the flange plate 27a by a nut-Y equipped eye bolt 59, see Figs. 15 and 17. The wheel'hub 2Ba is adapted to be mounted in the same manneras the previously described wheel. Also, as shown in Fig.. 15, the hub flange 2la is provided with an annular weed guard 34a. The rim of this two-section wheel is made .up which acts as. a bridge. bar is rigidly but de~ Y the line to be measured pushes the wheel ahead 30.I staff for the transit and an operating'hamdle for the measuring wheel. As shown, this4 bar 53 has a short open slot. ¿i3 in one» end and a long open slot dâ at. its. other end and that nut equipped bolts 4,5 are. passed. through. the yoke With 35 5I and through the said slots 43 and e4.. this arrangement to remove the bar 33 from the yoke 4H, itis only necessary, after loosening the nut-equipped bolts 32, to move" the. bar .down ward in respect to Fig; '7 far enoughto Vdiscon nect the upper end of the bar from the upper 40 bolt, and then to withdraw the bar from the lower bolt, this being done without entireLy, re moving the nuts from the bolts; ` Thev rod vor >staff d2 isv provided'withv a long „ lateral projecting arm 4E located outward. of the The lower end of. the staif @il is preferablysharpened so that it may be eas 45 rim. of the wheel. ily forced into the ground. VThe staff.V is also provided with a secondaryv or shorter arm 51 that projects in an angle to the arm 45 so that when the stai i's forced into the ground far .enough to engage the arms 46 and ¿l? with the ground, the staff: will. be heldin a vertical position, provided of course that the ground is level.> The staff 42 and arms Q6 and @l like the rim and spokes of the wheel are preferably made from, steel tubes. ' The transit head is made up of a dial 48 with a. Vernier scale, and aV sighting bar 49 pivoted to the axis of> the dial at 50. As preferably de 60 signed, this bar 49 has upturned ends 5| and V52 formed with sighting slots, Vrespectively 53 Y tion, due to its weight, will register. one rod course, represents one rod of travel of the opera tor. The wheel is adapted to travel> through high grass, weeds, and over roughageV without slip page, and hence, accurately record each .rod of travel.. Obviously, if. the Wheel were made in» 35 other dimensions than for rod measurement, it ‘ would record the' unit of travel Yrepresented by a revolution of the particular wheel. . The weed guard or hub flange 34 prevents high grass or weeds from getting tangled up with the star wheel 35 and tappet 38. When the transit. is to be'used, the staifis, as Valready stated, forced into the ground and set in a vertical posi tion so that the dial 38 will be level, or approxi mately level, and then the sighting bar 49 may be used in the manner well-«known to surveyors. The above statements as to operation apply to all of the several forms of the wheel> illustrated. Also,»in all of the Wheel structuresV illustrated. the wheel may be readilyA disconnected from the staff or bar ¿2 simply by disconnecting the bridge bar 33. . ' 'I‘he four-section wheel illustrated in Figs. 1 to 14, inclusive, may be readily folded into» a quadrantal assembly, as follows: The four bolts 30`are first removed which disconnects the inner ends of the wheelV spokes from- -the wheel» hub flange. Then the wheel will be folded into semi circular formation by folding of the wheel rim on the hinges 22V and 23. This turns the hinge 25 upside down or places the same on the same. side of the semi-circular assembly 4so'that the wheel may then be folded into quadrantal form by The dial shown’is rigidly' secured to a hub Amovement on the hinges 24 and 25. The wheel 55 that is internally threaded to ñt the threads thus disassembled will, of course, occupy a very and 54. on the upper end of the staff 42 and also to fit- similar threads on the end of the stub armv di. When the transit' is to be used, it will be applied to the upper end of the staff when the lower end of the latter is forced into the ground; but when out of use, it may be, and at certain small space as compared with the total diameter of the wheel. .` . The modified wheel illustrated ‘in Figs. 15 and 16 is adaptedV to be folded only into semi-circular formation. To accomplish this folding, it is only necessary tc remove the nut of the clamping eye bolt 59, thereby releasing the spoke 5l from times will be, applied to- the stub arm 6l. Figs. 15, 16 and 17 show hub and rim portions Vthe hub ñange 21a so that the .Wheel can then of. a wheel that will operate like-the wheel al Y iai-easy described, but which will f_oid only into be folded on the hinges >lill. YI-líere it will be noted that one of the lspokes 55 is approximately 3 2,121,867 aligned with the hingesl 6o and with the pivotal ,Y connection between the hinge- lug 58 and the end portion 5l8L of the spoke 51, which arrange ment permits'the free folding of the Wheel into segmental formation. ' ' Of course, the rigid Wheel structure illustrated in Fig. 18 is not capable of folding, and hence, the Wheel always remains at its full size. > f' What I claim is: i » ' form Within a segment approximately co'exten-VV sive with a rim segment. 3. In a land-measuring instrument, a ground-r engaging Wheel comprising a Y hub, rim and spokes, said rim involving four segments hingedly 5 connected, thev said spokes being four in number, one rigidly connected to each of said rim segments, and at least three of said spokes being de ' tachable from said hub, the said wheel thereby 1. In an instrument of the kind described, a being capableV of being, folded into >compactseg 10 staiî` having a laterally offset yoke, a bar rigidly mentalform .within a segment approximately co.. t but detachably secured to said yoke, a spindle se extensive with arim segment. Y Y . » cured to said yoke, a ground engaging VWheel jour , 4. The' structure defined in claim `2 in which naled to said spindle, a register supported by saidl said Wheel has four spokes connected to said' 15 bar, said Wheel having a tappet for operating hubi in overlapping arrangement tangentially 15y said register to indicate the distance travelled by to Van imaginaryVV circle struck from the axis of the Wheel, said wheel being directly journaled to the hub, at least Athree of said spokes being de said bar and said bar being rigidly but detach tachable from said hub. ably securedto said yoke. 5. 'I'he structure defined in claim 3 in which y2. In a `land-measuring instrument, a ground 20 said wheel has four spokes connected to said 20 engaging wheel comprising a hub, rim and hub in overlapping arrangement tangentially to spokes, said rim being made up of a plurality an imaginary _circle struck from the axis _of the of hingedly connected sections, certain of said hub, at least three of said spokes being detach 10 spokes being detachable from said hub and mov able :from said hub. v , 25 able with the respective rim sections, whereby said Wheel may be folded into compact segmental EBENHARD S. GANDRUD.