US2377525A

US2377525A - Document feed for photographing machines

Info

Publication number: US2377525A
Application number: US528681A
Authority: US
Inventors: Friedrich J Schutt
Original assignee: Remington Rand Inc
Current assignee: Remington Rand Inc
Priority date: 1944-03-30
Filing date: 1944-03-30
Publication date: 1945-06-05
Anticipated expiration: 1962-06-05

Description

Juhe5, 1945. F. .1. SCH UTT 2,377,525

' DOCUMENT FEED FOR PHOTOGRAPHING MACHINES Filed March 30, 1944 5 Sheets-Sheet l xvc nl I ull 30 Q INVENTOR lP/CH d. SCHUTT June 5,1945. F, S HUTT 2,377,525

DOCUMENT FEED FOR PHOTOGRAPHING MACHINES Filed March 30, 1944 5 Sheets-Sheet 2 June 5, 1945. sc -r 2,377,525

DOCUMENT FEEDFOR PHOTOGRAPHING MACHINES Filed March 30, 1944 5 Sheets-Sheet June 5, 1945. F, J, SC UTT 2,377,525

DOCUMENT FEED FOR PHOTOQRAPHING MACHINES Filed March 30, 1944 5 Sheets-Sheet 4 INVENTOR FR/E'DP/CH J Sam 77' June 5, 1945f F. J. SCHUTT 2,377,525

DOCUMENT, FEED FOR PHOTOGRAPHING MACHINES Filed March SO, 1944 5 Sheets-Sheet 5 INVENTQR fie/E Ava/1d Jam/Tr Patented June 5, 1945 Friedrich J. SchutLBro'oklyn, N. Y., assignor to Remington Rand Inc., Buffalo, N r Y., a corporation of Delaware Application March so, 1944;seria1nontzacsi i l Claims. (01. 71 -51) This invention provides-improvements in document feeding mechanism for document photographing machines. H; l

The invention provides an improved document feed construction for a photographing machine having feed units detachably mounted in the machine and formed to provide guide surfaces for guiding documents thereover through a photographing position with feed rolls for feeding the documents over the guiding surfaces .in which each unit is constructed of a series of parts that are inexpensive to manufacture, are readily assembled into unit form and arranged to provide convenient access to the working parts of the machine and the document feed for repair adjustment andreplacement of parts.

The invention comprehends the provision of improved document feed units having a plurality of curved guide bars mounted in spaced parallel relation on transverse retaining bars interen:

gaged at the endswith end platesand arranged so that securing meanswill rigidly secure the.

several parts together in assembled relation in a manner providing for disassembling the parts for service, replacement and repair.-

r The invention provides a grid unit for guiding documents having arplurality of spaced parallel curved guide bars mounted in assembled. relation and rigidly secured on a plurality of trans; versely extending retaining bars interengaged at the ends with end members to provide an assembled gridunit for supporting a pluralityof document feedshafts with journals in the end members on one side of thebars andwthe peripheries of document feed rollers thereon. projecting through the spaces between the guide bars beyond the opposite edges for engagement with and feeding of documents over said guide bars.

The invention also provides for the construction of a document feed from sheet metal. by forming a plurality of sheet metal partsvin the form of guide and retaining'bars and end plates rigidly assembled together to provide a grid unit for guiding of documents over one side thereof while a plurality of feed roll are mounted on the other side of the guide bars with the peripheries of feed rolls carried thereby projecting be tween the bars for engaging and feeding documents over the other side, all arranged for convenient manufacture and assembly for effecting economy in construction, assembly and repair.

The invention comprehendsa number of other features residing in the constructio-n of the guide.

bars, the retaining bars and the end members for providing a grid unit for guidingand feeding documents in a. document photographing ma- Fig. 1 is a fragmentary side elevation showing the right-hand end of the document feedmechanism partly in elevation and partly in dotted lines with the: main drive gear for the feed rolls broken away and other portions shown in crosssection, for illustrating details. of construction.

Fig. 21s a fragmentary rear elevationof the document feed looking forwardly from a rear upper portionof the machine showing the latch for retaining the upper guideunit in position in cross-section, the view beingjtaken substantially along the line 2-.-2 of Fig. 3.

Fig. .3.,.is a. vertical transverse cross-section. taken substantially on the line 3--3 of Fig. 2. Fig.4 is avertical central transverse cross-section taken substantially along the line 4-4 of Fig. 2.. r i

Fig 5 is; a cross-section taken substantially alongthe line 5-9-5 of Fig. 4.

Fig. dis a detail cross-section tially on the line 6-6 of Fig. 3. Fig. 7 is a fragmentary detail view showing the method of attaching the retaining and guidebars. Fig, 8 is a detail cross-section: taken on line taken substaniii-a of, Fig. 4.

Fig. 9 is a .detailicrosssection taken on line 9--9of1"ig.4. H

Thewdocumentyfeed structure disclosed in the 7 present application is an improvement over the 1 document feed construction shown in co-pending application Serial Number 472,359,1i1ed January 14, 1943, and is adapted for substitution for the document.feedmdisclosed in the aforementioned co-pending application in. a photographing machine constructed as disclosed therein. The document feed structu re disclosed herein is also used in connection with the disclosures of document photographing machines shown in applications executed and filed simultaneously herewith.

As disclosed in the aforementioned co-pendingj applications the document photographing machineusing the feed structure of the present invention, employs right and left-hand side walls l and Z mounted in spaced parallel relation and carriedby a suitable base, not shown. Right-y hand side wall l is formed with a large opening 3 for receiving the feed unit.

pinions on the maindocument The main feed unit incorporating the present invention has a pair of spaced parallel end memteeth 8 and an internal annular gear 9 mounted on the innerside thereofadjacent side wall I,

A pulley III forms the main drive. pulley for the document photographing machine and. is driven by belt II from a suitable electric motor.

Pulley Ill carries pinion I2 intermeshed with gear I I3 rotatable on a stub shaft carried by side wall I. Gear I3 is connected to pi'nion I 4 in mesh v with gear teeth 8 on main drive gear 'I. By this chain of gears the motor drives main drive gear I and main drive shaft 6 in. a manner disclosed in the aforementioned co-pending applications.

End members 4 of the main feed unit have a free edge at the upper, rear and bottom portions arranged in concentric relation to the centerg of shaft 6 and a forwardly projecting portion I5 mounted on supporting rod I6 having opposite ends secured to the-front portions of sidewalls I and 2. A pin I6 extending inwardly from a portion of side wall'l overlapping right-hand end member 4 engages in an openingin said end member for cooperation in mounting the main feed unit onthe side walls.

The main feed unit has a plurality of arcuate guide bars ll of duplicate form in construction mounted in spaced parallel'relation between end plates 4 concentrically with reference to the center of main drive shaft 6.- Each arcuate guide bar I I is formed of sheet. metal'arranged in radial relation with ears I8 extending inwardly at the ends and in the central portion. Ears I8 are formed with perforations and the outer periphery of the bar is recessed'at I9" in the portions formed with the ears to receive transversely extending retaining bars 20. A projection 2I on each bar I! in the central portion of recesses I9 extends through a slot in retaining bar 20 as shown in Fig. 7 and is riveted into the countersunk outer portion of the slot in bar 20 for rigidly securing the central and end portions of each arcuate guide bar I! to each of the three transversely extending retaining bars 20; Thisretains the arcuate guide bars in spaced parallel and rigid assembled relation with retaining bars 20. The outer faces of retaining bars 20 are arranged to lie flush with the outer edges of arcuate guide bars IT to provide a smooth outer guide surface over which documents may be moved. A plurality, of positioning rods 22 are provided, each engaged through one row of aligned apertures in ears [8 at the top, center and bottom portionsof arcuate guide bars I'I. Ejachof the positioning rods 22 projects beyond the end of guide bars IT and through apertures in the marginal portions of each end. plate 4. At the inner faces of end plates 4 each rod 22 is provided with an annular groove havingadetachable retaining washer 23' engaged therein and cooperating to retain rods 22 against'erld wise movement between end members 4. Upper and lower retaining bars 20 have the opposite ends extending into engagement with the inner faces of end members 4. Central transverse retaining bar 20 has the ends extending into recesses in end members 4' similar torecesses I 8 inguide bars I"I.' Rods 22 andthe cooperation between the ends of transverse retaining bars 20 with end members 4 secures a rigid assembled relation of the guide and retainingbars on end'plates'4.

A pair of securing bars 24 extends between cening screws 25 for rigidly securing end members 4 to securing rods 24. Securing screws 25 and rods 24 cooperate in. retaining. the entire main feed unit in assembled relation since end members 4 may be disengaged from positioning rods 22 and the ends of retaining bars 20 by reason of the fact that the connection between these parts is a slidable interfitting connection allowing the end members to be moved outwardly and disengaged from the retaining bars and positioning rods whenever screws 25- are removed from securing bars. 24. I

A plurality of feed roll shafts 26 have opposite ends journalled in

bearings

21 and 28 respectively, in end; plates 4. These feed roll shafts 26 are arranged in concentric relation to the outer edges of arcuate guide'bars" I1 and in concentric'relation to main drive-shaft 6 as clearly shown in Figs. '1, 3 and 4. Nine shafts are illustrated in the drawings, arranged in concentric relation to main drive shaft 5 from the top portions of end plates 4 about the rear marginal portions to" the bottom portions thereof. A plurality of feed rolls 29 are mounted in spaced relation along each of the shafts 26 and are arrangedto have the peripheries of the rolls extend between guide bars I! so that a portion of the periphery of each feed roll 29 projects outwardly beyond the outer periphery of guide bars I! in. order to engage and feed documents about'the outer surfaceeof the grid feed unit.

Bearings 21 are at the right-hand side of the machine and are shown at the left-hand side in Fig; 5 while bearings'28 meat the left-hand side of the machine and shown at the right of Fig. 5. Bearings 28 are flanged'sleeve. members fitting in end plate 4 with the flanges engaged against the inner face of end plate 4 so as'to slidably receive the reduced shouldered ends of feed roll shafts 26. Bearings 27 are in the form of sleeves or needle bearings mounted in openings in end plates 4 at the right-hand side of the machine adjacent side wall I with opposite ends projecting in spaced relationbeyond both sides of side wall 4, as clearly shown in" Fig. 5. Feed roll shafts 26 have reduced ends on each shaft rotatable in bearings 27 and 2 8 and portions projecting beyond the outer ends of bearings 21 rotatably mounting a plurality of pinions 2B0 'intermeshed with internal gear 9 for direct driving of the feed rolls by the main drive gear. Feed rolls 29on all except the feed roll shaft indicated at 3| are formed of suitable rubber or other composition material providing a friction surface adapted to grip and effectively feed documents. Feed roll shaft 3| is a metallic shafthaving the feed rolls integral or mounted thereonin any suitable man: ner so as to provide feed roll portions projecting between arcuate guide bars IT, for apurpose hereinafter described. The end of shaft 3I carrying pinion 30 is constructed to mount a larger driving pinion 32 between pinion 30 and end wall 4, and for this purpose, bearing 2! for shaft 3! does not project beyond the outer face of end wall 4 to the same extent as the remaining bearings, Fig. 5.

tral portions of end members 4 at opposite sides of main driveshaft 6 and has the ends abutting. the inner facesof the. end. members.

with apertures in end members 4-to receive secur This main feed unit has the end plate atthe right-hand end thereof mounted against righthand side wall I with pin I6" engaged in an openingin end. plate 4. shown in Fig. 5, with pinions 30 projecting through opening 3 for engagement with internal gear 9. In this way it will be seen that the unit may be engaged in assembled unit form into operative position 'against'side wall I. It may be readily mounted or. removed from the guide unit.

machineas a; unit with. drive shaft 6 whenever rod is removedtherefrom and end wall 4 disengaged from pin [6' after the drive and clutch structure at the left side .of the machine have been disengaged. The outer edges of guide bars 11 form a partially cylindrical path for feeding a document through the machine. .As disclosed in the aforementioned co-pending applications these documents are fedfrom the top front portion of the machine :into this .feed mechanism and then they are fed bythe feed rolls'through the partially cylindrical path about the outer of securing rods 58 extend in spaced parallel relation transversely between end members 46 edges of guidebars I 1 to the lower portion thereof wherethey are discharged! A deflector. plate 33 is mounted on a rod 34 having opposite ends engaged in openings in end plates 4. The defiector plate 33has a plurality of deflector fingers 35 extending outwardly therefrom and arranged toproject between and'beyond the lower edges of guide bars I1 so that documents being discharged atthe lower portion of the feed mechanism are deflected downwardly by the ends of deflector fingers 35, as clearly shown in Fig. 4.

The central :portion of the main guide unit providesa photographing position at the portion where transverse retaining bar extends transverselyacross the central portion of guide bars Upper and lower guide

complementary units

36 and 31 are @mounted in cooperative relation at the upper and lower rear portions of the main guide unit for cooperating therewith infeeding documents about the outersurfaces of guide bars 11.. portionuonppposite sides of the photographing position through which the documentsware "fed for photographing. l

, The upper guide 'unit is constructed in a similar manner to. the main guide .or grid unit in that it is ofgrid construction having a plurality of radially extending guide bars .38 arranged in spaced parallel relation Each guide bar 38 has an intermediate outwardly projecting ear 39 formed with a projection on the outer end thereof adapted to engagesin and be riveted in a slot in transverse retaining bar 40 secured to the ends of all ofthe projections-39 on all ofguide bars 38 for rigidly securing them in radially extending spaced parallel relation. Each guide bar 38 has lateral extensionson opposite free ends, as indicated at 4| and 42, respectively. Extensions 4| and 42 are each formed with an aperture and on the outer edges are provided with projectionsfor engaging in slots in transversely extendingre taining bars 43 and 44, respectively. The ends of the projections are swaged to rigidl attach

bars

43 and 44 to the lateral extensions 4| and 42 in the same manner that transverse retaining bars 20 are secured to guide bars l1.? Positioning rods 45 extend through apertures in lateral extensions 4| and 42 in transversely extending relation and have the ends projecting beyond the end guide bars 38 and with the ends of transverse retaining bars 43 and are interengag'ed withendmembers 46 at each: end of the upper The end members of the upper guide unit-are These units are spaced apart at the central formed of a pair of spaced parallel plates41 and 48 respectively, riveted together at their inner edges in spaced relation by a plurality of rivets 49. Rivets 49 areformed with reduced ends extending. through apertures in plates 41 and 48 and have the free endsof the reduced portions riveted orswaged to rigidly unite plates 41 and 48 together to form an endmember 46. A pair for engagement at the ends with the inner faces ofend plates 41 at the inner side of" end members 46. The ends of rods '50 areprovided with threaded bores extending axially. therein to threadedly receive securing screws 5| extending through. apertures in plates 41 and 48 inregis try with the threaded bores in the ends of rods 50. Spacing sleeves 52 are engaged between plates 41 and 48 about securing. screws 5| for cooperation to retain the plates in spaced parallel relation at the outer portion when the securing screws are tightened against the end of rods 50. Securing rods and screws 5| rigidly retain the end members and the transversely extending bars and positioning rods in interengaged rigid assembled relation to form a rigid upper guide unit. It will be noted that the spacing rods are positioned at the end portions of the upper guide unit toward the outer edges of the end members in spaced relation outwardly beyond the outer edges of guide bars 38. l Both endplates 41 and 48 of each endmemher are: formed with radially arranged slots 53 slidably receiving bearing sleeves 54 formed at the inner ends withlan'nular flanges slidably en gaging the inner faces of plates 41. A plurality of idler feed shafts 55 haveoppositeends reduced and .journalled in bearing sleeves 54,"the shafts extending in spaced parallel relation between opposite end members 46 at the outside edges of guide bars38 which are formed with recesses in the outer edges to accommodate these shafts:

There are four of these idler feed shafts in the upper guide unit arranged in substantially. radial relation to four corresponding feedroll shafts 26 progressing upwardly from. the photographing position as shown in Fig. 3. shafts have-their bearings 54 slidably mounted inthe end members in order that they may move toward and away from feed roll shaft 26'when the guide unit is in position for feeding documents so that as documents engage between feed rolls 29- on feed roll shafts 26 and idler feed rolls 56 on idlerfeed shafts 55 the idler feedshafts can be'moved slidably with theirolls to accom modate the (document thickness being fed. A length of coil spring 51 is mounted between spaced parallel plates 41 and 48. in each end member. and has opposite ends secured-adjacent the ends of each end member by cotterpins 58 extending transversely through registering aper tures in plates 41 and 48. Each coilspring 51 is engaged over each bearing sleeve '54 for idler feed roll shaft 55 and under 'each rivet 48 as clearly shown in Fig. 3. This applies spring tension to all of the bearing sleeves 54 for normally holding idler feed roll 56in peripheral engage ment with feed rolls 29 and for providinga firm gripping action on documents fed between feed spaces between radial guide bars 38 in a manner clearly shown in Fig. 2;

A pivot rod 59 is extended transversely through the upper. corners of end members 46 through plates 41 and 48 and has the outerends thereof extending through apertures in side walls I and 2- for detachably and pivotally mounting the upper These idler feed.

guide aunt in the side walls. Annular grooves are-"provided in pivot =rodl59 adjacent zen-d :memhas 46 as well as side walls -l :and '2 to receive snap-:on washers for securing'the rod in the side walls and holding .the upper guide unit in position thereon. The upper guide unit :may "therefore be swung about pivot rod 59 to the" dotted line position shown in Fig. 8 .or even to ahigher position :to open up the document feed'mechanism :in order to :provide access to the parts thereof ;for inspection, assembly. and .disassembly of the-imit between"sidewalls and 2, as Well as for removal of documents if necessary;

Aesuitableiform-of latch mechanism is provided for'rretaining the upperguide unit 36in the operative .full line position as showniin Figs. :3uand 4. For this purpose a 'U-shaped :sheet "metal bracket 60 :has therre'e ends of the legs formed with apertures receiving lower "positioning rod 45 adjacent the :lower .end of the upper guide unit and the photographing position. The adjacent securing rod 5fl, talsoextends through the legs. of bracket 60 asclearlysliowniin Figs. 3and 4. .U-' shaped'bracket 6D i provided with a cylindrical bearing sleeve .6! shown in .Fi'g. rotatably mounting a 'stub-sha'ft'62 carrying :hand1e'63 on the outer end and lever 64 on the inner end having opposite ends extending radially from the innerend of shaft 262. tLatching links 165 each have one end 'pivotally connected to one end of lever 64 "from which they extend in opposite directions transversely of the upper guide unit-with the outer-ends slidably engagedin apertures in plates 41 and 48 in each and member and extend outwardly beyond the outer sides of the end members for engagement in apertures in side walls l ill and -2 when'upperguide'unit 36 is in the'operative position for feeding documents as shown in Figs. 3 and 4.

' I-Iandle '63 may be rotated to move lever 64 to retract latching links65 .for disengaging the ends from the apertures in side walls I and 2 whereupon upper guide unit 36 may have its lower rear end swung upwardly about pivot rod '59 so as to open up the document feed mechanism.

The'upper guide unit 36 maybe readily removed from between side walls I and 2 by operating handle 68 to disengage latching links 65 from side Walls I and 2 and then by removing pivot rod 59 from the apertures in sidewalls l and 2 and end'members 46. The assembled upper guide unit-may be removed as a complete'unit after the pivot rod has been removed, thereby providing a very convenient assembly for efiicient operation "and aife'ed structure that is quickly accessible for inspection, adjustment, repair and replacement "of parts.

Theruppermost feed shaft 66 mounted in the upper guide unit is aligned with the upper feed roll shaft 26 in substantially radial relation and has opposite ends journalled in flanged bearing sleeves slidable'in radial slots in plates 41 and 48,

in the same manner as idler feed shafts 55 are journalled in bearing sleeves 54. A slide men ber '61 is slidably mounted between plates 41 and 48 of each end member and has an aperture receiving the bearing sleeve for shaft 66. Slide members Gl have'actuating pins BB extendin g Qut wardly through slots in outermost end plates 48. These pins are used to operate suitable mechanism to control the machine to prevent more than two documents from being fed through the machine at the same time, part of this mechanism being disclosed in Fig, 1 and indicated generally at 69 while the pin on the opposite end rality of arcuate radially arranged spaced par-.

allel guide bars 10 'have lateral projections "H at the lower end of said guide bars while the opposite ends are provided with enlarged sections 12. The central portions of arcuate guide bars 10 have ears l3 projecting outwardly andiformed with a projection on the ear of each guide bar riveted in a slot of transversely extending retaining member 14 for holding the central portions of guide bars 10 in spaced parallel relation. Transversely extending end retaining bars 15 are formed with a plurality of apertures to receive projections on the edges of enlarged sections 12 and lateral projections H for riveting therein to rigidly secure the ends of the retaining bars in spaced parallel relation in cooperation -with retaining bar 14. This provides .a rigid'assembled grid construction cooperating to form a unit with end memberslB. i

Each end member 16 of lower guide unit 3 is formed with a pair of spaced parallel plate members providing inner and outer end plates TI and 18, respectively. End plates 11 and 'IB'of each end member are riveted together at spaced intervals along the inner edges by spacing rivets 19in the same manner as the end-plates-of the upper guide unit. A pair of securing bars 80: extend between inner end plates 11 of the end members adjacent opposite ends thereof and are located toward the outer edges, as shownin Fig. 4'. Bars 80' havethreaded sockets in the ends registering with apertures in the inner and outer end plates '71 and 18 to receive securing screw 8| extending through spacing sleeves '82 positioned between inner and outer plates TI and 18; in the same vmanner as described above in'connection with the upper guide unit. Securing screws 81' and spacing rods 80 cooperate to rigidly secure the guide and transversely extending retaining bars in assembled relation with "the end members so that theends of the transversely extending securin bars are engaged with the inner faces of' the end members for'rigidly assembling the bars and end members to form a rigid lower guide unit.

A plurality of radially extending guide slots 83 roll shafts 26 "in paired relation as clearly shown in Fig. 4. These idler feed rolls are normally retained in resilient engagement with feed 'rol1sf29 by means of a length of coil spring in each end member indicated at =81 in Fig; 3 engaged under spacing rivets IQintermediate the ends thereof. Between the spacing rivets, spring 81 is engaged over each :of the bearing sleeves 84 with opposite ends of the spring secured to cotter pins88." Cotter. pins 88 extend through aligned apertures in .both inner and outer end plate's'I'I and I8. Each spring S'Iengages flanged bearing sleeves 84 souas'to normally movethem toward the inner arcuate edges oflguidebars for maintaining idler feed rolls. 86 iengaged with feed; rolls 29. Whenever documents are fed there between they will be resiliently gripped; between the main feed rollsyand. the idler feed; rolls detachably and rigidly retained in nplace for feed- 7 ing cooperation with the main guide iinit.

H The upper end of theIright-handendmember of thelower guide unit has a bearing 90 mounted in transversely extending. relation therethrough with a filler plate 91 engaged between inner and

outer end plates

11 and 18 and apertured to re-.

ceive bearing Safer cooperation in holding the bearing in place in the "end member. A short shaft sectiOnQZ isrotatably mounted in bearing 90 and has a shoulderedsocket member 93 on the inner end and a pinion 94 ,on the outer ,end thereof .for engagement l in-the assembled relation of the lower guide'unit with pinion 32 having a gear ratio for rotating Shaft 92 at a greater speed than feed roll shaft 3|. The left-hand end member of the lower guide unitvhas the upper corner provided witha sleeve bearing flangedat the inner end rigidly mounted in plates 1] and I8; as indicated at 95 inFig. 5. y L

Arotaryfeedbrush 96 hasa plurality of radially extending bristles niounted in a twisted wire shaft member 91. A drive head. 98 is mounted on the right-handflend of twisted wire shaft ill and is iormed'withdi'ive projectionslat diametricall opposite sides toiengage in the slots formed in socketj93 forjjdriving'flcooperation. to rotate feed brush96 in the rotation of shaft 92i A collar 99 is rigidly mounted i n the left-hand end offtwisted wire" shaft 91 as sholwntat the right of Fig. 5. One end or a coil spring I00.is engaged on collar 99 and engages againstthe flange at the inneren d jfor compression to holdslidable tbearing member j I 0| on wire shaft "91, in engaged relationin bearingsleeve 95, in the man} ner shown inliig. 5. Slidable bearing IOI sup ports one end of feed brushj96, for rotary moveinent in the operation of the i document feed I for engaging documents leaving the photographing position and by reason of beingjdriven at. ahigher speed than food rolls 29 the document will hekept in a stretched condition in the photographing position against wrinkling, buckling and the like in order to maintain the portionof the document in photographing position proper focus with the camera. I I

The invention therefore provides a main guide unit and upperand lowercooperatihg complementary guide units each-detachably mountedbetween side wallsl and 2 of the photographing machine to receive documents fed between the main and upper guide units at the top portion of the machine from a suitable feed table as disclosed in the aforementioned application Serial Number 472359, or fed thereto by an automatic card feeding device I of: a suitable character similar. to that shown in I the copending I application filed under even date :herewith. Documents are fed in at the top between the curved guide bars of the mainyand upper guide units, through the photographing position, ,and then betweenthe curved guide bars of the main and lower guide units for discharge from the bottom. portion of these guide units .at the front portion of the machine. This guide mechanism receives documents fed into. the documentieed mechanism from the front of the machine at the top portion and delivers the documents at the bottom iront portion.

In the operationof this documentfeed'mechanism the documents operate primary and secondary control members I02 and I03 respece tively, mounted on transversely extending shafts I04 and I05 respectively, each having opposite ends mounted in end members 40 of upper guide unit 36 in advance of the photographing position. 1 Control members I02 and I03 are successively engaged by: the leading edge of documents fed vby the coaction of the feed rolls for operating control lever: I06 mountedoni side wall 2 to close a light switch and operate a clutch for starting theiilm feed in the machine. Control member I03 also operates lever I06 for maintaining the control lever in position to maintain operation of. the lights and feed of the film until the trailing edge of a document leaves the end of control member I03 which terminates slightly in advance of the photographing position. The ope eration of controlmembers I02 and I03 is such that the document has the trailing edge fed through the photographing position to complete photographing of the document before control member I03 allows control lever I06 to returnto the position where the film feed is stopped and the lights are turned out. This operation of the control members will be more clearly understood by reference to the co-pending applications hereinabove mentioned. 1 I I The document feed has a unit construction wherein radiallyextending sheet metal guide bars are utilized to provide a grid structure incombination. with the end members to provide units that are readily assembled and disassembled for replacement ofparts, for inspection of the parts, and servicing thereof, to thereby provide a'feed mechanism that is readily accessible, detachably mounted in the photographing machine, and

adaptedto facilitate efficientoperation of the photographing machine.

The invention claimed is: 1 I 1. A document feed .for photographing machines, comprising a plurality ofspace'd parallel curved guidebars, a plurality of transverse retaining bars having all of said guide bars rigidly secured thereto in cooperation to provide outer uniformly curved document guiding surfaces for guiding. documents thereov'er through an intermediate photographing positionthereonga pair of end members detachably receiving the ends of said transverse bars. means securing said end members together in engaged relation on the ends of said transverse bars to form a grid unit, a plurality of feed shafts rotatably mounted in said end members in spaced ,parallelrelation at the inner edges of saidguide bar's, feed rolls mounted on said shafts between said guide bars and having the peripheries projecting slightly beyond the outer edges of said bars,and means mounting a plurality of cooperating feed rolls forengaging of said guide bars in spaced parallel relation and formed for cooperation to provide outer uniformly curved document'guiding surfaces for guiding documents thereover from one end of the bars to the opposite ends through an intermediate photographing position thereon, a pair of end members each engaged at one'end of said transverse bars in spaced parallel relation to-each other and said guide bars, means on the assembledguide and retaining bars slidably interengaged with cooperating portions on said end mem-bersfor detachably securing said bars to said end'members, means for securing said end members together in rigid spaced parallel re1ation,a plurality of spaced parallel feed shafts 'lour-nalled in said end members at opposite. ends and extending between said end members inside of said guide bars and having the axes of said shafts arranged in concentric relation to said guide bars, and feed rolls mounted on saidshafts having peripheral"portions projecting through the spaces between said guide bars slightly beyond the outer document guiding surfaces thereon; and means cooperating with said feed rolls and shafts for driving said shafts and holding documents in engagement with the periphery of said feed rolls for movement over the document guiding surfaces of said bars.

3. A document feed for photographing machines, comprising a plurality of spaced parallel radially arranged arcuate guide bars, each of said bars being recessed in transversely aligned relation at a plurality of positions on the outer periphery thereof, a plurality 'of transversely extending retainingbars engaged in said recesses and rigidly secured therein toall of said guide bars with the-outer faces of said" retaining "bars formed to have the surfaces thereof flush" with the outer peripheries of said "guide bars'for cooperation to provide a partially cylindrical structure for guiding documents ther'eo'ver through. an

intermediate photographingpositicnthereomand end. plates engaged with opposite ends "of said transverselyextending bars in spaced parallel re lation to said guide bars andformed for interengagingcooperation therewith for-mounting said bars thereon in detachable rennet, meansfor rigidly mounting said end pl'atesi'n spaced parallel relation and cooperating to retain said end plates and barsinrigid assembled relation to form a grid unit, 'a iplurality of spaced parallel feed shafts extending between said end "plates adjacent the inner edges 'of said guide bars having opposite ends journalled in said end plates with shaft centers arranged in concentric relation to the outer peripheries of;said guide bars, a plurality of feed and having the peripheries thereof vprojecting between'said guide bars and slightly beyond the cuter'peripheriesthereo'f for feeding documents over the outer peripheries of said bars through an intermediate photographing position thereon, and cooperating'feed and drive'meansfor engaging and 'drivingsa'id feed rolls and :feed roll rolls mounted on said feed shafts shafts to feed-documents from ne end .of-said guide bars to the opposite ends thereof through the photographing'position.

14. In a'document. feed for documentphotce graphing machines, a grid unit comprising a plurality of spaced parallel :curved guide bars, .aiplurality of transverse retainin'gbars rigidly'secured touall of said guide bars in. spaced parallel relation for cooperation to provide curved document guiding surfaces along'one of the edges of said bars, .end members at opposite ends of saidbars having the ends of said transverse retaining bars cooperating therewith in interengaged relation to support .said' end members 'spaced'parallel relation, retaining means for securing said end members in rigid assembled relation with said retaining bars to form va rigid grid unit, a plurality of feed shafts'having opposite ends journallledin said end memberslfor radial sliding movement relative to the document guiding edges of said bars and beyond the opposite edges thereof, a plurality of feed rolls mounted on said shafts having the peripheries projecting between said bars past the document guiding edges thereonfor oooperation to engage and feed documents over said document guiding edges, and resilient means mounted on said end members'for resiliently mov i-ng said shafts in said end membersto project the peripheries of the feed rolls thereonbeyond the document guiding edges of said bars.-

'5. In a document feed for document photographing machines, a grid unit comprising a plurality of spaced parallel curved guide bars, aplurality of transverse retaining bars rigidly secured to all of said guide bars in spaced parallel relation for cooperation to provide curved document guiding surfaces along one of the edges of said bars,end members at opposite ends of said retaining bars each formed of a pair of spaced parallel plates having one of said plates formed for interengagement with the ends of said retaining bars in spaced parallel relation to said guide bars, spacing means interen'gaged' with said guide bars and ends members for spacing said end members in spaced parallel relation relative to said guide bars, means securing said end plates of each end member and said guide and retaining bars in rigid assembled relation, a plurality of feedshafts mounted in spaced parallel relation at one side of said guide bars and having the ends extending through slots formed in said end 'plates, bearings slidably mounted in said end 'plates providing journals for said feed shafts in the end plates of each of said end members, a plurality of feed rolls mounted on said feed shafts having the peripheries thereof projecting between saidwguide bars and beyond'the opposite edges thereof for cooperation in feeding documents over the opposite edges of said guide bars, and a coil spring-in each end member having opposite ends secured atopposite ends of said end members and extending between said 'end plates, means'securingsaid spring intermediate'the ends thereof between said shaft bearings to said end plates and said spring having a plurality of intermediate portions engaging the said shaft bearings for normallyand resiliently moving all of said shaft hearings toward one end of the slots in said endplates for normally projecting the peripheries of said feed gollers beyond the opposite sides of said guide ars.

FRIEDRICH J, SGI-IUTT.