Патент USA US2124883код для вставки
' July 26, 1938. 2,124,883 L. R. MARTIN ‘ INDICATING‘ SYSTEM FOR MOTION PICTURE _APPARATUS Filed June 11, 1935 H 02., ' > ' . INVENTOR Lawrence R. Martin BY' . mém/ ‘ uybéké' ' ATTORNEY Patented July 26, 1938 I 2,124,883 UNITED STATES PATENT OFFICE 2,124,883 INDICATING SYSTEM FOR MOTION PICTURE APPARATUS Lawrence R. Martin, Rochester, N. Y., assig-nor, by mesne assignments, to Eastman Kodak Company, Jersey City,. N. J., a corporation of New Jersey Application June 11-, 1935, Serial No. 26,019 9Claims. (Cl. 33-172) The present invention relates to an indicating vided with an embossing and which carries an system for a motion picture apparatus and more indicating member within said embossing. A particularly to an indicating system which facil itates dark room loading of the apparatus. The present invention will be described with respect to a motion picture ?rm magazine but is projection on the indicating member is normally moved into engagement with the outer convolu tion of a ?lm roll in the magazine casing and a ?nger-piece is connected to the indicating mem also adapted for use on motion picture cameras, projectors, etc. ber and is available from the exterior of the ' One main object in the design of a ?lm maga 10 zine is to produce a- very compact magazine. Placing the indicating means in an embossing - or forming in the cover of the magazine casing contributes to compact design of the ?lm maga zine. However, the indicating means includes a magazine. The ?nger-piece permits movement of the indicating member throughout its range or permits holding the indicating member in 10 .v any predetermined position. A masking mem ber partially encloses the indicating member within said forming, has a groove for co-oper ating with the beaded margin of the indicating projection for engaging the outer'convolution member to perform a_ light-sealing function and of the ?lm roll and is preferably spring pressed‘ also has portions abutting the projecting mem so that said projection strikes against said outer ber to limit the movement thereof. " . convolution. The normal position of the indi Reference is hereby made to the accompanying cating means and its projection complicates as drawing wherein similar reference characters 20 20 sembly of the ?lm magazine because the pro designate similar elements and wherein: 15 jection may be over the side or edge of the film roll and mutilate the same after the cover is forced onto the casing. Furthermore, this as sembly of the magazine must be accomplished 25 in a dark room to prevent fogging the light sensitive material of the ?lm roll. . The primary object of the present invention is the provision ‘of an indicating system that can be located so that the projection will not 30 mutilate the ?lm roll and includes a ?nger-piece for holding the indicating means and its pro jection in such location for easy ?tting of the magazine cover. } A further object of the invention is the pro 35 vision of an indicating system which permits as sembly of a ?lm magazine solely by using the sense of touch of the operator so that the as sembly can be readily accomplished in a dark room. Fig. 1 vis a ?lm magazine provided with an- ‘ indicating-system according to the present in- . vention and with part of the cover broken away ' for better illustration of the internal parts. Fig. 2 is a transverse cross-section through .25 said ?lm magazine taken on the line 2-2 of Fig. 1. ' - Fig. 3 is a fragmentary cross-section through ‘the embossing and indicating means taken on 30 line 3-3 of Fig. 1. Fig. 4 is a section through the forming in the magazine cover and is taken on the line 4-,! of Fig. 3. . The ?lm magazine which provides the setting 35 or background for the present invention will ?rst be described. The particular characteris tics of the ?lm magazine are immaterial. but ' may be of the type which comprises a casing HI , , having lateral walls ll. Oilset portions I! are 40 A further object of the invention is the pro vision in an indicating ‘system of co-operating provided along the margins of lateral wall H. ‘ A cover l3 has a rim H for engaging the offset grooves and a beaded margin to form light-seal ing joints for the magazine container and con-5 portion 12 along the outer margin of lateral tributing to the manual control of the movable wall ll. When the cover I3 is?tted into casingi 45 member in the indicating means. l0 a light-tight container for a ?lm supply is 45 > v. Still another object of the invention is the provided. provision of a masking member which, in addi The front lateral wall ll of the casing “I may tion to assisting in the manual location of the ‘be provided with an . exposure aperture, not indicating means, also acts to limit the move-» shown, and a presser pad 15 supports the ?lm F 50 ment of the indicating member in such an indi opposite the exposure aperture, being resiliently cating means. Other and further objects of the held against ?lm F by a spring 16 which is sup invention willbe su gested to those skilled in ported by a pair of posts II. A ?exible shutter the art by the descr ption which follows. I8 is slidably mounted along lateral ,wall It and The above and other objects of the invention may be operated by a pin I9 to a closed position 40 55 are embodied in a magazine cover which is pro to cover said exposure aperture or may be moved as 2 to an open position to uncover said exposure aperture. > The ?lm magazine contains a pair of rotata bly mounted ?lm rolls. The supply ?lm roll As the diameter of ?lm roll 20 decreases, the projection 35 moves in a counter-clockwise di rection, see Figs. 1 or 4, and the graduations also move in a counter-clockwise direction past 20 is coiled upon a core ‘2| which is adapted to pointer 38. be rotatably supported upon a supply spindle 22 on the casing III of the magazine. A ?lm the indicating means must have a range of sprocket 23 is rotated by a shaft 24 to conduct As a result,’ the ‘projection 35 of movement into space previously occupied by con volutions of the film roll 20. If the indicating the film in a preformed loop from supply roll 20 to the take-up roll 25. The ?lm loop is dis means is in a position for indicating an amount closed as of the type which encircles one of the ?lm rolls and requires a double layer of ?lm over one side of sprocket 23. This double layer of ?lm is guided by a pair of guide rolls 23 and 15 by a spindle 21. The take-up roll 25 is wound ?lm roll, then projection 35 will abut against the upon a core 28 which is connected to the take up spindle 23. This particular type of ?lm path also contributes to compact design of the ?lm magazine but the present invention is not 20 limited to any speci?c ?lm path, the invention being quite independent of the intermittent movement of the ?lm through the ?lm loop. The cover I3 is fastened-securely in place upon the casing ill by means of a pair of bolts 25 30 which pass through the cover l3 and are threaded into the ends of spindles 22 and 29. According to the illustrated or any other'con ventional form of ?lm movement, the supply ?lm roll decreases in diameter upon operation 30 of the apparatus while the take-up ?lm roll has a corresponding increase in diameter. It is cus tomary to measure the amount of ?lm that has been moved or remains in the apparatusby an indicating means which makes contact with the 35 outer'convolution of one of said ?lm rolls; The indicating means of the invention is described as engaging the supply ?lm roll but footage indi cations may be taken from either roll. The ‘cover i3 is provided with an embossing or form 40 ing 3|. Such embossing 3| may have any suit able formation but is here disclosed as being of ?lm less than that actually in the supply 10 side of ?lm roll 20 and prevent location of the cover l3 on casing i0 or else cause mutilation of the ?lm opposite projection 35 upon- forcing the cover l3 into the casing Ill. Since the interior of the magazine is not readily available when the cover I3 is being ?tted into casing l0, it is di?icult to set the‘ indicating means so that there will be no interference between projection 35 and the edges of ?lm roll 20. ' ' 20 To overcome the di?lculty- just indicated, a ?nger piece is provided for permitting move ment of the- indicating means throughout its range and for holding the indicating means in any predetermined position. Such a ?nger piece 25 is connected to the indicating member 33 and is available from the exterior of the ?lm maga zine. ‘The ?nger piece 45 is integral with or attached to the support 40 and is ?at to lie compactly‘ alongthe cover |3_. Obviously, the support 40 and ?nger piece 46 may be supplied 30 in practice as an integral headed stud. Although the friction between the operator's ?nger and the ?at surface of ?nger piece 45 is generally su?icient to hold the indicating means ' in any desired position, a masking member is_ provided which assists in this holding of the indicating means and. at the same time per forms other functions to be more particularly described hereinafter. ‘The masking member 41 40 is located in a shallow offset 43 in cover i3 and is fastened to cover |3 by a pair of rivets 49 and An indicating means is movably mounted. a pin 50. When the cover I3 is ?tted on casing cizrcular and provided with an annular groove 3 . within embossing 3| and comprises an indicat 45. ing member 33 having a beaded margin 34 and carrying a projection 35. One surface of indi cating member 33 is provided with a graduated scale 35. The forming 3| is provided with an 5 III, the pin 50 is in a position over sprocket 23, see Fig. i, so as to strip ?lm from’ sprocket 23 or to prevent the .?lm loop from bulging rear wardly within the magazine to engage the supply ?lm roll 20. The masking member 41 is opening 31 through which the graduations on . recessed to clear projection 35 and has a por 50 scale 35 can be observed. A pointed 38 may extend into opening 31 to form an index over the graduations of scale 35 and a. window 39 tion 5| and a portion 52 for abutting projection 35 in either of two extreme positions. The masking member 41 is also provided with a groove 53 which ?ts into the beaded margin 34 of the indicating member 33. The support 40 is journaled in embossing 3| . ing means. ' ‘ A support 45 is centrally journaled in the ' with sufficient play so that pressure exerted in embossing 3| and is riveted to the center oi’ an axial direction on ?nger piece 45 will move indicating member 33. Said support 45 mounts said ?nger piece 45 into frictional engagement with the outer surface of embossing 3|, and/or member 33 for movement or rotation within em move indicating member 33 into frictional en bossing 3|, with beaded margin 34 withinv an gagement with masking member 41. and/or nular groove 32, and with projection ~35 extend beaded margin 34 into frictional engagement ing into the casing of the magazine for engage with the groove 53 in masking‘ member 41. The ment with the supply ?lm roll 20. co-operation between beaded margin 34 and A resilient means normally moves‘ the indicat ing‘means so that projection 35 is normally in groove 53 insures and increases the frictional contact with the outer convolution of ?lm supply engagement between their supporting members may be provided over opening 31 to keep the dustiand dirt out of the interior of the indicat 55 60 ' ' 65 roll 23. Such a resilient means may be. com posed of a spiral spring 4| which has one end 42 fastened to embossing 3| by a rivet 43 and 70 which has the other end 44 anchored in a‘ slot 45 within support 40. With the cover i3 ?tted onto the casing Hi, the resilient means or spiral spring 4| normally moves the indicating means so that projection 35 engages the outer convolution of > 75 ?lm roll 20, see Fig. 1. so that less pressure on ?nger piece 48 is re quired to overcome the action of spiral spring 4| and to hold the indicating means in any pre determined position. whenv the indicating means is moved so‘ that projection 35 abuts por tion 52, and when the cover I3 is ?tted into casing i0 .projection '35 will be spaced, even from a full supply ?lm roll 20, so that there will be no difficulty in ?tting the cover into the cas grasses ing and the?lm in roll 20 will not be mutilated. The assembling operator can move projection 35 into this extreme position and press upon ?nger piece 46 to hold the indicating means and pro jection 35 in such a position duringl?tting of the cover. Furthermore, the operator may grasp'the . h 3 the beaded margin of said indicating member; of a ?nger piece connected to the support for ' said indicating‘ member and available atthe' : exterior of said cover, said support having sum cient play so that pressure on said?nger piece U! promotes a frictional engagement between the vcover It with two or three'?ngers and may place ‘_ beaded margin of_ said indicating member and still another "?nger of the same hand against , the groove of said masking member whereby said ?nger piece 46 to hold the indicating means in a indicating member can be manually held in any 10 predetermined position. 3. In a motion picture apparatus, the combina tion with a ‘casing adapted to contain a ?lm roll, indicating means to move projection 35 against the outer convolution of v‘film roll 20 and the indicating means will be ready to give accurate footage indications ‘and to follow the ?lm roll 2| a cover, for enclosing said casing, an embossing in said cover and provided with an opening, an as its diameter decreases. tion on said indicating member for extending into said casing and for engaging said ?lm roll, and .. a masking member across said embossing par Although, groove 53 increases the frictional en gagement between indicating member 33 and V 10 ?xed position, thus simplifying the handling of the cover during assembly. "when ?nger piece 4! is released, spiral spring 4| will actupon the ,1]. ,_ indicating member movably mounted within said embossing and covering said opening, a projece? masking member 41, it also forms an additional .tially to enclose the same and having portions light-sealing joint to protect the ?lm within the - ‘for abutting said projection to‘limit the move magazine from being logged by the light which mentjoi said indicating means between extreme may enter through the opening 31 in embossing positions, of a ?nger piece connected to said in 3|. Thus masking member 411 performs three dicating member, available from the exterior of 25 principal functions, one to assist in holding thev the cover in closed position thereof, and arranged indicating means in any desired position, another so that movement of said ?nger piece moves said to provide additional light-sealing, over the indi- , indicating member to extremeland' intermediate positions and so that pressure on said ?nger eating means, and still another to limit the move ment of projection 35 and to provide a positive piece promotesv frictional engagement between '20 . ' said indicating member and said masking mem stop in one extreme position thereof. 30 Allv of the operations necessary to set the indi- ~ ber to permit holding of'said indicating member ' catingmeans and to hold the same in any set. in any predetermined position. 4. In a motionpicture apparatus, the combinaposition as well as to ?t the cover onto the cas ing can be performed solely by employing the tion with a casing adapted to contain a-?lm roll, 35 sense of touch of the assembling operator. Since I a cover for enclosing said casing, an embossing all of the operations can be performed by merely in said cover and provided with an opening‘, an‘ feeling the diiIerent parts, the assembling of the indicating member within‘said embossing cover ?lm magazine can be readily accomplished within ing said opening and having a beaded margin, a projection on said indicating member for ex . The indicating system 01‘ thepresent invention ~ tending into said casing and for engaging the a dark room. is susceptible of'many variations and modi?ca tions. Therefore, the scope of the invention is to be determined by the appended claims. Having now‘ particularly described my inven 45 tion what I desire to secure by Letters Patent of the United States and what I claim is: _ 1. In a motion picture apparatus, the combina tion with a casing adapted to contain a ?lm roll, a cover for enclosing said casing, and embossing 50 in said cover and provided with an opening, an indicating member movably mounted withinsaid embossing and covering said opening, a projec ' tion on said indicating member 'for extending into periphery of said ?lm roll, a support for movably mounting said indicating member within said embossing, and a masking member across said embossing, having a groove ?tting into the beaded margin of said indicating member, and 45 having portions for abutting said projection‘to t the movement of said indicating means be tween extreme positions, of a ?nger piece con nected to‘ the support for said indicating mem ber and available from the exterior of said cover 50 for moving said indicating member to extreme and mean positions, said supportpermitting pres sure on said ?nger .pieceto promote frictional. said casing and for engaging said ?lm roll, and . engagement between the beaded margin on said 55 a masking member across said embossing par- - indicating member and the groove in, said mask 55 tially to enclose thesame, of a ?nger piece con-= ing member for holding'said indicating member I nected to said indicating member, available from the exterior of the cover in closed position thereof, and arranged so that pressure on said 60 ?nger piece promotes ‘frictional engagement be tween said indieatingmember and said masking member to permit holding of said indicating member in any predetermined position. ’ ‘ , 2. In a motion picture apparatus, the combina, tion with a casing adapted to contain a film roll,v a cover for enclosing said casing, an embossing in .said cover and provided with an opening, an indicating member within said embossing cover ing said opening and‘ having a beaded margin, 70 a projection on'said indicating member ‘for ex tending into said casing and for engaging the periphery of. said ?lm roll, a support for mov ably mounting said indicating member within said embossing, and a masking member across 75 said embossing and having a groove ?tting into in' any desired position. _ 5. In a motion picture apparatus, the com bination with a casing. adapted to contain ‘a ?lm roll, a cover for enclosing ‘said casing and pro so vided with an opening, an indicating means completely enclosed by said casing and cover,_ including an indicating member movably mount ed on the inner side of said cover and visible gnly through the opening therein, a projection‘ 65 on said indicating member extending into said casing, ‘and a resilient means for normally mov ing said indicating member to bring said pro jection against the outer convolution of said ?lm roll, of a support journalled in said cover, 70 connected to said indicating member which is on the inner side of said cover and having a finger. portion which is external to said cover and which constitutes the only external manual control of ‘said indicating means. ' 75 2,124,888 4 . 6. In a motionpieture apparatus, ‘the com bination with a casing adapted to contain a ?lm‘ roll, a cover for enclosing said casing and pro ' vided with a window, an indicating member groove and provided with an opening, and an indicating means movabiy mounted on the inner side of said cover within said embossing to cover completely enclosed by said casing and cover and including a projection, a support movably mounting said indicating member on the inner said opening, having a beaded margin ?tting said groove to form a light sealing joint, including a projection extending into said ing for engaging the outer convolution of side of said cover for observation only through ?lm roll, of a masking member on the inner said window and with said projection located 10 for movement into engagement with the outer convolution of said ?lm roll, and a resilient means for normally moving said projection of the indicating member into said engagement with the outer convolution of said ?lm roll, of into and cas said side of said cover for housing said indicating means within said embossing, provided with a 10 groove ?tting into the beaded margin of said indicating means to form another light sealing . joint, and having portions for abutting said pro jection to limit the movement of said indicating a ?nger piece available from the outer side of said cover but connected to said indicating member on the inner side thereof and consti tuting the sole manual control for the indicating means. member and the projection thereof. cover having an annular groove and provided with a window, a circular indicating member 20 having a beaded margin, and including a pro jection on said indicating member for extending . '7. In a‘motion picture‘ apparatus, the com I bination with a casing adapted to contain a ?lm roll, a cover for enclosing said casing, an em bossing in said cover encircled by a deep groove and provided with an opening, and an indicating means movably mounted on the inner side 0! said cover within said embossing to cover said opening and having a beaded margin ?tting into said groove to form a light sealing joint, of a masking member on the inner side of said cover for encasing said indicating means within said embossing and provided with a groove ?tting into the beaded margin of said indicating means to form another light sealing joint. , 8. In a motion picture apparatus, the com bination with a casing adapted to contain a ?lm roll, a cover for enclosing said casing, an embossing in said cover encircled by a deep 15 9. In a ?lm magazine,.the combination with a casing adapted to contain a ?lm roll, a cover for enclosing said casing, an embossing in said into said casing and for engaging said ?lm roll, a stud journalled in said forming and connected to said indicating member to support the same 25 within said embossing and with said beaded margin within said annular groove, and av spiral spring between said indicating member and said embossing, having one end connected to said forming and the other end connected to said 30 stud and for moving the projection on said in dicating member intoengagement with the pe riphery of said ?lm roll, of aI ?nger piece dis posed outside of the cover of said magazine and connected to said stud for manual control and 35 movement of said indicating member. LAWRENCE R. MARTIN.