Патент USA US2403738код для вставки
i 356-18 July 9, 1946. J. MlHALYl 2,403,733? , 1 RANGE FINDER CONSTRUCTION Filed Oct. 10, 1942 N“ 3* w Q“ I > 3 Sheets-Sheet 1 m __5H. W. A M cm. BY W J g? 5 mmWm 0 W .A 1 H I Search R00 July 9, 1946. J. MIHALYI 2,403,738 RANGE FINDER CONSTRUCTION Filed Oct. 10, 1942 3 Sheets-Sheet 3 Th]... _ JOSEPH MIHA LYI INVEM'OR W yéf'imnz 7 ATTORNEYS JCCHMH “Hui Patented July 9, 1946 2,403,738 UNITED STATES PATENT OFFICE 2,403,738 RANGE FINDER CONSTRUCTION Joseph Mihalyi, Rochester, N. Y., assignor to East man Kodak Company, Rochester, N. Y., a cor poration of New Jersey Application October 10, 1942, Serial No. 461,585 17 Claims. 1 (Cl. 88—-2.7) This invention relates to range ?nders and more particularly to a range ?nder construction which is simple, relatively inexpensive and ac curate, and which construction permits a range ?nder to be held by hand by means of a pair of handles adjacent which various adjusting mem bers are located. One object of my invention is to provide a range finder construction in which an operator may support a range ?nder for use solely by hand. Another object of my invention 10 2 Fig. 5 is a wiring diagram of electrical equip ment used in the range ?nder shown in Fig. 1; Fig. 6 is an elongated fragmentary section through a portion of the range ?nder shown in Fig. 1 on a somewhat enlarged scale; ‘ Fig. 7 is a fragmentary sectional view through the remainder of the range ?nder shown in Fig. 1 showing on an enlarged scale details of the range ?nder mechanism; Fig. 8 is an enlarged fragmentary detail section is to provide handles for carrying the range ?nder taken on line 8-8 of Fig. 9; body so constructed that there is only a mini Fig. 9 is a fragmentary sectional view on an mum chance that undue forces applied to the enlarged scale similar to Fig. 6 but taken at right handle will distort the range ?nder body. An angles thereto; other object of my invention is to provide a hand 15 Fig. 10 is an enlarged fragmentary detail simi held range ?nder so arranged that the operating lar to Fig. 7 but taken at right angles thereto; members for the range ?nder can readily be Fig. 11 is an enlarged fragmentary section moved by the hands of an operator supporting taken on line ll—|l of Fig. 10; and the range ?nder by its handles. Other objects Fig. 12 is a fragmentary sectional view on an will appear from the following speci?cation, the 20 enlarged scale taken on line |2--I2 of Fig. 9. novel features being particularly pointed out in the claims at the end thereof. My invention consists broadly in providing an extremely light and portable range ?nder con In the past one of the difficulties in providing struction in which the parts are so arranged that a satisfactory and extremely accurate range ?nd an operator can readily support a range ?nder er has been that, if the range ?nder is made suf 25 at eye level by two handles. These handles are ?ciently heavy to prevent distortion, it is difficult on a ?exible type of support which permits lim to operate by holding manually so that in most ited movement of the handles Without applying instances range ?nders are mounted on tripods. any torque to the body of the range ?nder itself Another di?iculty with most range ?nders is that, and the various controlling adjustment members if they are provided with handles for supporting 30 are arranged adjacent the handles so that they the range ?nder and if they are made sufficiently can be readily operated. light for convenient use, it has generally been As indicated in Fig. 1, the range ?nder may possible to distort the body of the range ?nder consist of a casing l, which in this instance is by undue pressure upon the supporting handles, preferably made of light metal tubing, having such as can readily take place when the user of 35 end caps 3 and 4 and including an eyepiece 5 the range ?nder is under ?re. Another di?iculty through which images may be made to coincide with known types of range ?nders is that the when the parts are brought into adjustment for many adjusting members are sometimes di?icult a particular focal distance. tooperate unless the range ?nder is ?rmly sup The elongated casing I may be supported by a ported as by a tripod. My present invention is 40 pair of handles 6 and 1, these handles being car directed particularly to overcoming these dif? ried by a bracket 8 of special construction. This cultles. bracket is made of flexible material, such as Coming now to the drawings wherein like ref springy metal, and is preferably U-shaped or channel-shaped in cross-section as indicated in erence characters denote like parts throughout: Fig. l is a top plan view of a typical range 45 Fig. 12 which shows the point of connection be tween the bracket 8 and the elongated casing I. ?nder constructed in accordancevwith and em In this instance it is attached to the casing by bodying my invention; means of a pair of screws 9 which are arranged Fig. 2 is a fragmentary rear elevation of a por substantially midway between the ends i0 and tion of the range ?nder shown in Fig. 1; 50 II of the bracket which support the handles 6 Fig. 3 is a fragmentary detail section of a por and ‘I. In addition, as indicated in Fig. 10, the tion of an adjusting mechanism and taken on major portion of the bracket 8 is spaced away line 3-3 of Fig. 2; from the tubular casing I and is only in contact Fig. 4 is a fragmentary section through a por therewith at substantially the central portion tion of one handle taken on line 4-4 of Fig. 2; 55 thereof as indicated at Fig. 12. Thus, from Figs. 3 2,408,788 4 9 and 10, it will be noticed that the handles 8 which it may be readily turned by the thumb to an and ‘I, which are carried by the ends I0 and II operator’s hand holding this handle or, if desired, of the bracket, are spaced from the tubular cas by the fore?nger of his hand. Thus, the knob ing and while this bracket does not extend may be readily operated while holding the straight along the lower portion of the casing I, 5 handle 6. since it has an offset portion I2 extending about The mirror bracket I8 which supports the semi the adjusting support I3. it nevertheless is so ar transparent mirror I9 normally holds this mir ranged that movement of the handles 8 and ‘I will ror in a relatively ?xed position. However, tem distort only the spring bracket 8 and not the tu perature changes, distortion of the instrument or bular body I of the range ?nder when unusual 10 other factors may move the mirror I9 from its pressure is applied to these handles. As can true position, so that I have provided a means readily be understood, when an operator is under for moving this mirror to compensate for any dis ?re he is liable to grasp the handles with consid tortion or improper position of the mirror. For erable force and, with the construction above full details of this adjustment reference may be described, since the bracket 8 is attached to the 15 had to my copending application Serial No. casing I only by the two screws 9 and since it is 461,584, ?led October 10, 1942, Mount for optical spaced from the casing I throughout the remain_ element. As shown in this application the mirror der of its length, slight movement of the handles I9 is carried by the frame I8 which is pivotally will not tend to distort the casing I. mounted by the pivots 36 which are carried by As is well known by those skilled in the art, 20 the U-shaped member 31 pivotally attached at extremely little force is sometimes all that is re 38 to the support 39 which forms part of a ring quired to distort an optical instrument of this 48. This ring carries a tube 4I supporting the type in which a few thousandths of an inch dis objective 28 and is attached at 42 to the tubular tortion would spoil the accuracy of the instru casing I. The ring 48 likewise carries the sup ment. 25 port 43 for the cam I29 and the shaft I28 and In the instrument described there are prefer the supporting member 44 for the prisms 2.2 and ably a pair of windows I4 and I5, best shown in 23. The optical systems used in the range ?nder Figs. 6 and 7, through which light rays pass in illustrated herein may be similar to the optical measuring distances with this instrument. The system of my copending cases Range ?nder, case spaced windows are centered on the axes A and 30 B, Serial No. 472,832, ?led January 19, 1943; B as shown in these ?gures. Light entering Range ?nder, case F, Serial No. 479,096, ?led through the window I4 along the axis A may be March 13, 1943; Range ?nder, case G, Serial No. re?ected by a totally re?ecting mirror I8 so as 479,097, ?led March 13, 1943. to pass down through the length of the cylindrical The frame I8 is carried by an arm 45, this arm casing I and so as to pass through the window 35 extending part way through the casing and, as I‘! in the mirror frame I8 as shown in Fig. 10. best shown in Fig. 3, terminating in two walls The mirror frame l8 supports a semi-transpar 48 arranged at right angles to each other, each ent mirror I9, which not only passes light rays wall having an accurately formed pad 41 con from the mirror I6, but also re?ects light enter tacting with the ends 48 of a pair of adjusting ing along the axis B through the window I5, so 40 screws 49 and 59 which are arranged at right an that an objective 28, shown in Fig. 10, may form gles to each other and which have a threaded an image of the two light beams at 2| after the connection with a support I3. A sleeve 5I and light rays have been re?ected by the prisms 22 52 extends part way around the knurled surfaces and 23, these prisms re?ecting the light rays in 53 and 54 on these screws and these sleeves are such a manner that the image will appear up provided with openings 55 and 58 through which right at the plane 2I.- This aerial image may the adjusting screws can be operated. A spring then be viewed through the eyepiece 5 which con 51 attached to an ear 58 on the arm 25 and to a tains suitable lenses to magnify the image. cap member 59 holds the arm against these two In order to bring the two images into coinci screws. Thus, if the aerial images formed by the dence the mirror I6 may be moved by an arm 25 50 objective 2!! in the plane 2I of the eyepiece 5 which extends through the casing and which is should- be offset vertically with respect to the pivotally attached at 26 to a hinged member 21, instrument at eye level, the adjusting screw 53 best shown in Fig. 9, carrying a mirror bracket can be turned swinging the mirror I9 about the 28 which supports the mirror I6, this bracket be pivot 38 correcting this mirror position until the ing in turn pivoted to a U-shaped member 29 on images meet. If the images do not properly coin the pivots 38 and 3|. Member 29 is pivoted at 32 cide at a given distance and are offset longitu to the ring support 33 carried in the end of the dinally of the instrument, the screw 54 may be range ?nder casing I and in setting up the in turned until this is corrected. Since these ad strument the screw 34 and the tubular screw 35 justments need not often be made, the adjust can be adjusted to move the bracket until an 80 ment screws 53 and 54 are well protected, but image of the collimated light coming through the window I4'is properly positioned. The arm 25 extends through the casing I and, as shown in Fig. 10, may be supported on ball bearings I26 they may nevertheless be turned by a thumb or _ fore?nger of an operator's hand while still hold ing the handle ‘I. ' It should be particularly noticed that the knobs which permit the arm to swing the mirror I6 65 55 and 56 are adjacent the handle ‘I and can read about the pivots 38 and 3|. This swinging movement is accomplished by a ily be reached therefrom. In the present instrument, which is particular knob I21 which is mounted on a shaft I28 to ly useful for spotting planes and for measuring which a cam I29 is attached, this cam contacting their distance from the operator, I prefer to pro with an end I38 on an adjusting screw I3I carried 70 vide a means for giving a wide angle view for on the end I32 of the lever 25. Thus, when the picking up the plane after which a much smaller knob I21 is turned, the cam will adjust the long angle of view is included during the operation of lever 25 and with it the mirror I6. the range ?nder. Such mechanism may consist It should be especially noted that the knob I21 of the parts shown best in Figs. 9 and 6. From is' positioned adjacent handle 6 in a position in 75 these ?gures it will be noticed that I have pro LDEHYCH “Gill? 5 2,408,738 vided a negative lens 60 in a mount Bl in the wall of the casing I so that light rays may enter along the axis C and, when a mirror 62 is in the operative position shown. this mirror may re ?ect the light rays so that the lens 63, together with the objective 20, may form an image on the plane 2| giving a wide angle. The mirror 62 and the lens 63 are mounted 6. The aerial image formed by the lens 20 on the plane 2| may be viewed through the eyepiece 5 and there is also located at this plane a sheet of transparent material. such as glass 01' plastic, 95 bearing a reticle which may be marked or engraved with crosshairs or other means for cen tering the images. This material iscarried by a bracket 96 which also supports a pivot 91. carry ing a ?lter 98 which may be moved to and from carried by the casing I, there being a spring 68 10 an operative position in front of the eyepiece as always tending to move the bracket from a po shown in Fig. 11 by means of a lever 99 which sition in which the arm 69 is located by the lies beneath the eyepiece 5 and also adjacent the stop 10 as indicated in Fig. 6. A wire 1| leads handle 6, so that it may be operated therefrom. from the bracket 65 to a lever 12. I preferably A spring I00 may be attached to a pin Hll car provide a spring Ila between the brackets 65 and 15 ried by the ?lter 98 so as to swing past a dead the lever 12 to take up for lost motion. The lever center with respect to the pivot 91 to hold the 12 is carried by an arm 13 which passes through ?lter in either an operative or an inoperative position. the tubular casing l and terminates in an arm 14 having a roughened operating surface 15. I have provided a means for mounting the This arm with its roughened surface 15, as indi 20 range ?nder on a tripod if this should be desired. cated in Fig. 2, lies adjacent the handle ‘I and This means, as indicated in Figs. 2 and 12, con can readily be operated therefrom. In the po sists of a disk member I05 attached to the spring sition shown in Figs. 6 and 9 an operator would channel member 8, the disk member being pro observe the wide angle view through the eye vided with a thread I06 which can be attached piece 5. As soon as a plane is sighted and brought to a tripod screw. However, this equipment is primarily intended for use while supported by to the center of this wide angle view, the op hand. erator then releases the arm 15 permitting the spring 68 to swing the bracket 65 from its op It should also be noticed that all of the mem bers which must be operated to operate or adjust erative position to an inoperative position in the range ?nder are located either on or adja which the stop 16 contacts with a stop 11 and cent to the handles 6 and 1 so that all of these in which the mirror 62 and lens 63 are swung members can be operated without removing the out of the path of light rays passing into the casing along the axis A through the window l4 hands from the two handles. It is therefore a simple matter for an operator to hold the range and reflected by the mirror 16. The operator then turns the knob I21 until the two images are 35 ?nder casing at eye level while looking through brought into registration at which time the dis the eyepiece 5. In order to more readily pick tance of the object can be read through the eye up a plane, he may desire to press the handle piece 5 in the following manner. 15 which throws the wide angle viewing device into its operative position shown in Fig. 6. After The shaft I 28 (Fig. 11) carries a light trans mitting disk 80 which may be illuminated by a 40 centering the image the handle ‘I5 may be released so that a narrow angle view of the plane will light from a lamp 8| re?ected upwardly by a mir appear in two images which he can readily reg ror 82 so that graduations on the transparent ister by turning the thumb screw 21 to adjust or translucent disk 80 may be read, since these graduations are re?ected by the prisms 83 and the angle of the mirror 16 relative to that of 84, the latter of which provides an image of the 45 the semi-transparent mirror l9 so that the two graduations in front of the eyepiece 5. images may be made to register or coincide on the plane 2|. When the images so register, the The lamp 8| is mounted in a suitable socket operator will then press the switch 9| carried by 85 and is connected to the wires 86 and 81 which pass through an arcuate slot 89 in the ring-like handle 6 causing the lamp ill to illuminate the member 49 and out through an opening into the 50 disk 80 so that the distance may be directly read on a bracket 65 pivoted at 66 to a bracket 61 channel-shaped spring handle support 8. These wires are connected to batteries 99 and 90 car ried in the hollow handles 6 and ‘I and Fig, 5 indicates a diagram of the wiring system in which the batteries 89 and 90 are connected in series from this disk while still looking through the eyepiece 5. Thus the lamp is only used momen tarily for reading the range. The other adjusting members, such as the ad justing screws 49 and 59, the ?lter handle 99 and the rheostat 92 can also be moved when nec essary without releasing the handles 6 and 1. However, after the adjusting screws 49 and 50 with the wires 86 and 81, there being a switch member 9| for energizing the lamp 8|. As best shown in Fig. 2 this switch member 9| is also are once set and the rheostat 92 is adjusted to readily accessible from the handle 6 and is in the present instance mounted on the handle. A rheo 60 give a desired lamp brilliance, it is not necessary to use these adjustments except at infrequent in stat 92 is mounted on the handle 1 so that the tervals. The ?lter handle 99 may be used some brilliance of the lamp 8| can be determined by turning the rheostat 92, this operation being what more often, but even this handle is not op erated as frequently as are the main adjusting readily accomplished while holding the handle 1. From the above description it will be noted that 65 members, that is the wide angle view handle 15, the focusing knob 21, and the light switch 9| for the entire range ?nder casing I may be man reading the focal setting of the instrument. ually supported by the handles 6 and 1, these From the above description it will be noticed handles being carried on the extreme ends of a that the construction of my range ?nder is such spring bracket 8 which is attached to the range that it may be made of light material and there ?nder casing I only at a point intermediate the will be but little chance of accidentally distort handles so that, if the handles should be moved ing the casing a suf?cient distance to interfere a slight distance toward or from each other in with the accuracy of the optical element con holding the instrument, only the bracket 8 will tained therein. spring and there will be no tendency to distort What I claim is: 75 the light tubular casing l\. 1. In a range ?nder, the combination with an aeoavss ' 7 8 some are adjustable for range ?nding, of handles for supporting the casing and means for resil for connecting the handles to the tubular casing, batteries in the hollow handles and wires leading from said handles and batteries to the lamp, and elongated casing including optical parts of which iently attaching the handles to the casing where by pressure applied to the handles may be at least partially absorbed by the resilient attaching means and the tendency to distort said elon gated casing may be reduced to a minimum. 2. In a range ?nder,_the combination with an a switch carried by one handle positioned for op eration while supporting the range ?nder by the handles, the means for connecting the handles to the tubular casing including a ?exible channel member also carrying and substantially enclosing said wires, the channel member extending longi elongated casing including optical parts of which 10 tudinally of the tubular casing and being at some are adjustable for range ?nding, of handles tached thereto at one point only. for supporting the casing and means for resili 9. In a range ?nder of the type including a ently attaching the handles to the casing com tubular casing containing optical elements for prising a spring bracket, a handle attached to range ?nding and a lamp, a, pair of spaced hollow each end of the bracket, said bracket including 15 handles for supporting the casing, ?exible means means for attaching said bracket to the elon for connecting the handles to the tubular casing, gated casing spaced away from said handles. batteries in the hollow handles and wires leading 3. In a range ?nder, the combination with an from said handles and batteries to the lamp, and elongated casing including optical parts of which a switch carried by one handle positioned for some are adjustable for range ?nding, of handles 20 operation while supporting the range ?nder by for supporting the casing and means for resili the handles, the means for connecting the han ently attaching the handles to the casing com dles to the tubular casing including a ?exible prising a spring bracket carrying the handles at channel member also carrying and substantially each end thereof, and means at substantially the enclosing said wires, the ?exible channel member center of the bracket for attaching the bracket 25 being of a shape to be normally spaced from the to the elongated casing, whereby the handles may tubular casing except at the point where it is fas be moved relative to the casing. tened thereto. 4. In a range ?nder, the combination with an elongated casing including optical parts of which 10. In a range ?nder of the type including a tubular casing containing optical range ?nding some are adjustable for range ?nding, of handles for supporting the casing and means for resili ently attaching the handles to the casing com elements one of which is movable, the combina tion with a pair of spaced handles for manually supporting the range ?nder tubular casing, means prising a spring bracket attached to the casing for de?ecting the movable range ?nding element midway between the handles, the bracket being including a shaft extending through the tubular spaced throughout the greater part of its length 35 casing, and means on the shaft for turning the from the casing and being free to ?ex from the shaft positioned adjacent the handle to be oper fastening toward the ends thereof. 5. In a range ?nder of the type including a tubular casing containing optical elements for range ?nding and a lamp, a pair of spaced hollow handles for supporting the casing, ?exible means for connecting the handles to the tubular casing, batteries in the hollow handles and wires leading from said handles and batteries to the lamp, and a. switch carried by one handle positioned for op eration while supporting the range ?nder by the handles. 6. In a range ?nder of the type including a tubular casing containing optical elements for range ?nding and a lamp, a pair of spaced hollow handles for supporting the casing, ?exible means for connecting the handles to the tubular casing, batteries in the hollow handles and wires leading from said handles and batteries to the lamp, a rheostat carried by one handle, and a switch car ried by the other handle, both the rheostat and switch being in a circuit including said wires and lamp inside the tubular casing. 7. In a range ?nder of the type including a tubular casing containing optical elements for range finding and a lamp, a pair of spaced hollow handles for. supporting the casing, ?exible means for connecting the handles to the tubular casing, batteries in the hollow handles and wires leading from said handles and batteries to the lamp, and a switch carried by one handle positioned for op eration while supporting the range ?nder by the handles, the means ‘for connecting the handles to the tubular casing including a ?exible channel ated by. an operator holding said handle, and means between the handle and the tubular body whereby said handle may move relatively there to and relatively to the means for turning the shaft. 11. In a range ?nder of the type including a tubular casing containing optical range ?nding elements one of which is movable, the combina tion with a pair of spaced handles for manually supporting the range ?nder tubular casing, means for de?ecting the movable range ?nding element including a, pair of shafts angularly arranged and extending through the tubular casing and posi tioned adjacent a handle, each shaft including a knob operable from the handle for adjusting the movable range ?nding element. 12. In a range ?nder of the type including a tubular casing containing optical range ?nding elements one of which is movable, the combina tion with a pair of spaced handles for manually supporting the range ?nder tubular casing, means for de?ecting the movable range ?nding element including a pair of shafts angularly arranged and extending through the tubular casing and posi tioned adjacent a handle, each shaft including a knob operable from the handle for adjusting the movable range ?nding element, and guards partially enclosing said knobs to protect said knobs against accidental displacement, each guard including an opening for operating the knob from the handle. 13. In a range ?nder of the type including an elongated casing containing optical range ?nding member also carrying and substantially enclosing 70 elements and including a light tubular member, > said wires. 8. In a range ?nder of the type including a tubular casing containing optical elements for range ?nding and a lamp, a pair of spaced hollow handles for supporting the casing, ?exible means handles for manually supporting said tubular member, a, bracket carrying both handles, said bracket being attached to the tubular member solely by a fastening member substantially equally spaced ‘between the handles, said bracket com 9 2,403,738 prising a. ?exible metal strip normally lying ad jacent to but spaced from the tubular member throughout the greater part of its length. 14. In a range ?nder of the type including an elongated casing containing optical range ?nding elements and including a light tubular member, handles for manually supporting said tubular member, a bracket carrying both handles, said bracket being attached to the tubular member solely by a fastening member substantially equally ?nder may be simultaneously held and operated by said handle and adjacent lever. 16. A range ?nder of the type including a cas ing having a plurality of range ?nder elements including a plurality of movably mounted ele ments mounted therein, a pair of spaced handles resiliently carried by the casing for supporting the range ?nder, a plurality of range ?nder ele ment controls for moving the movable range ?nder elements, said controls extending from spaced between the handles, said bracket com 10 the inside to the outside of the casing where they prising a ?exible metal strip normally lying ad are located adjacent said handles in position to be jacent to but spaced from the tubular member operated by the hands of an operator holding throughout the greater part of its length, said said handles. fastening member for holding the bracket on the 17. A range ?nder of the type including a cas tubular member including a, threaded opening for 15 ing having a plurality oi’ range ?nder elements supporting the tubular member from a suitable including a plurality of movably mounted ele tripod attached thereto. ments mounted therein, a pair of spaced handles 15. A range ?nder of the type including a cas resiliently carried by the casing for supporting ing containing range ?nder elements, a supple the range ?nder, a plurality of range finder ele mentary view ?nder adapted to cooperate with ment controls for moving the movable range certain range ?nder elements, a hinged mirror ?nder elements, said controls extending from the forming a part of the view ?nder, a spring nor inside to the outside of the casing and terminat mally holding the mirror in an inoperative posi ing in movable members, said movable members tion, a pair oir spaced handles supported by the being located to move through ?xed paths ad casing, a lever adjacent one 01’ the handles on 25 jacent said resiliently mounted handles and posi the outside oi’ the casing, a shaft passing through tioned to be moved by the hands of an operator the casing and means connecting the shaft and grasping said handles'whereby a minimum tend mirror for moving the mirror to an operative ency to distort the casing may occur from stress position against the pressure of its spring, said applied to the handles by an operator. 80 lever being adjacent one of the handles and accessible from the handle, whereby the range JOSEPH MIHALYI.