US1900297A - Printing device - Google Patents

Description

March 7, 1933. v- J. MoHLER PRINTING DEVICE Filed Dec.` 4, 1929 Patented Mar. 7, 1933 moose? vALENrINn J. Moni-nia, or RIVERroniisnyILLiNoIs, AssrGNon To lAmmessoGranen 'coMrANi or WILMINGTON; DELAWARE, a conronarIoN or DELAWARE PRINTING' DEVICE Application filed December 4, '1929. Serial No. 411,417.

ly comprise a frame and a plate having print? ling characters; embossed thereon7 the frame being providedV with retaining means for detaeliably ksecuring the plate in place thereon.

The retaining means have comprised overlapping parts ofthe frameivith which opposing edges of the plate are engaged by a full endvvise movement of the plateon the frame, and they have also comprised yielding means the form of locking tongues on the frame arranged to engageone orvboth ends of the plate for locking the 'plate on the frame. These locking devices permit. the plate to be slid thereoif'er into proper vposition on the frame but they lact as stops engaging the edges of the plate at one or both ends lto pre.- vent endivise movement of theplate on the frame after` it` is" properly posit-ioned. v.To permit removal of the-plate from the frame for replacement or otherpuigposes it is necessary to depress one of theloclring devicesbefore the plate can ybe removed- Operators generally useaithumb nail ora .fingernail vand very often a finger naillile or a (knife '30y bladegor any other pointed .instrumentffor depressing the locking device, If this operation is repeatedveryroften it is liable to disfigurethe thumbnail or finger nail and if an instrument is used it is very aptto be applied too, forcibly'vvith thel result that thelocking device is deformed and will not return to locking position after-the -plate is removed as it is intended thaty it should do. The'retaining vdevices which overlap opposing edges of the plate extend continuously ordiscontinuously andsubstantially throughout the llength ofthe pla-te and more `or less effort is required to guide and movethe plate into and out of position on the frame. To facilitate thismovement it has. beee'n customary to' make these edges ofthe plate discontinuous in a sortrof scallop butfthis ldoes not. entirely lovercoi'ne the difficulties of inserting and removing the plate. v'I`he'i`nsertionand removal'of platesy is done occasionally bysorne users WhileV other lance is increased by Wear of parts and other causes incidental to production manufacture.

others, to facilitate the insertion of the plate users employ operators 'who are constantly engaged in this ivorl; and since the plates and frames are manufactured for universal service fit vis the effort of the manufacturer. to

simplify the labor of the constant operator vwithouty adding to the difficulties of the'occasional operator and Without lessening the efficiency of the'printing device. To enable the plate to slide .freely-it has been customaryl to provide a greater clearance between the edges of the plate and the retaining means on the frame than would be lnecessaryinerely to per- Amit slidin@r engagement. With' such a clearance the plate is 'always capable of a limited movement on'the frame Within the retaining means and While this movement is not ordinarily obgectionable so far as printingy and Y registration is concerned it may become undesirable and even objectionable Whenthe clear- It is-the objectvof this invention to over-- lcome the difficulties inthe Amanufacture and use of printing devices above mentioned, and

inthe frame and removal' of the plate from .the f r`ame,fand yto hold'4 tlieplate rigidly in place in the frame against relative movement.

further object of the invention is to release the plate from the locking device which holds the plate in the retaining means on the Vframe by manipulation of the framel indev pendent of or in conjunction with the locking -I device under pressure of the fingers and Without` requiring the use of fingernails or instruments of any kind. i A

Further objects are to enable engagement ofthe plate with the retaining means and disengagementtherefrom by very short sliding movementsy of theplate on` the frame; toen# able the plate to beinserted in initial position` on thewframe by a transverse movement as distinguished from an end toy end movement;

to permit an especially free movementfof the [plate inthe retaining devices While theplate visbeingpositioned von or removed-from the frame to facilitate these operations? and to hold the plate rigidly in placeon the fframe in its linal position. n

And a further ob] 'ect kis eliminate the yielding device which has been relied upon heretofore to a large extent for locking the printing plate on the frame and to provide means which operate by wedging action produced by the sliding movement of the plate into position on the frame for holding the plate rigidly in position.

I have illustrated the invention in a selected embodiment in the accompanyingA drawing and referring thereto,

Fig. 1 is a front view of a printing device with the printing plate in initial insertion position on the frame.

Fig. 2 is a similar view showing a card and a plate in position on the frame.

Fig. 3 is a back view of the frame.

Fig. l shows a frame having two plates thereon.

Fig. 5 is a sectional view on the line 5-5 of Fig. 1.

Fig. 6 is a sectional view on the line (ip-6 of Fig. 2.

i Referring to the drawing the frame 6 is provided with retaining devices 7 for detachably holding an information card 8 thereon. The frame also has retaining devices 9, 9 to receive a printing plate 10. The plate rc taining device at the bottom of the frame is preferably in the form of a continuous bead; the retaining devices for engaging the ends of the plate are preferably in the form of overhanginglips as shown in Fig. 5 or they may be ordinary stops as heretofore used and the retaining devices 9 for retaining the top edge of the plate are preferably in the form of elongated lips or flanges. All ofthe retaining devices are stamped from the metal sheet from which the frame is formed. The retaining devices 9 are spaced apart Yand from an intermediate holding device 11 which is also stamped from the frame. Thefplate has retainer projections`12 on its upper edge to'slidably engage the lips 9. These projections are spaced from the ends of the plate and-from each other and between the retainer projections the edge of the plate is crowned at 13, to provide a wedge projection, by inclining the edge upwardly from each retainer projection to a high point located midway between the ends of the plate in the form of the invention illustrated in the drawing. And the retainer projections 12 and the wedge projection 13 are so positioned with respect to the lips 9 and holder 11 that when the lower edge of the plate is inserted Vin the bead 9 at the bottom of the frame the `the right end retaining device 9 but this de- 4vice does not prevent engagement of the retainer projections with the lips as just described. If necessary slight pressure may be applied on the plate at the right end portion to effect engagement of the projection 12 adjacent the right end of the plate with its lip 9. The projections 12 are of sufHcient height to interengage the lips 9 when the plate is in final position, Fig. 2. As the plate is slid to final position the wedge projection 13 comes to rest with a wedging action against the holder 11 whereby the plate is held rigidly in position on the frame. The parts are desirably made to provide the wedging effect to hold the plate in fixed position von the frame but it is recognized that this is a neatness of lit whichit is difficult to provide in production manufacture and to preserve in continued use and while this accuracy of fit is desirable it is not absolutely essential for the invention. The retaining devices 9 engaging the ends of the plate act as stops to prevent endwise movementvof the plate on the frame, and so long as the projections 12 engage the lips 9 when the lower edge of the plate is engagedwith the bead 9, and the` holder l1 cooperating with the wedge projection 13 prevents transverse movement of the plate sufficient to permit disengagement of the plate from the lips 9 or the bead' 9, the

plate will be held on the frame even thoughl it may be capable of a slight movement relative to the frame. The frame is preferably made from the blank more fully described inv my co-pending application Serial No.

411,416, filed December 4, 1929, and it hask at each end a plurality of slots 14 formed by striking up the retaining stop devices 9 from the body of the frame. The spacing flanges reinforce and strengthenV the frame transversely but the slots beino 'alined tend to Y weaken the frame longitudinally at the end portions. This makes it possible for the o-perator to bend the end portion of the frame, as shown in Fig. 5, to clear the end retaining stop 9` from the plate so that it can be easily moved endwise from its final position, Fig. 2, to its initial position, Fig. 1, for removal. The complete removal is effected by slightly swinging theupper edge of the plate forward until it has cleared the lips 9 and holder 11l and then lifting the plate out of the bead 9 at the bottom ofthe frame. And it may be observed here that a simple way of inserting the plate in the fra'meis to arrange it about the position indicated in Fig. 1 and then inserting the lower edge of the plate into the bead and flattening the plate against the frame tothe position shown in Fig. 1. Ordinarily bending of the end of the frame for removal of the plate, as described, will not damage the frame but it is appreciated that the bending may be carried too far and damage the frame and therefore to cause the plate to clear the end retaining device stop 9 by f r ssp sufciently to clear the stop 9, or'the end of the frame may be bent to accomplish this result without operating the pressure section, but it is desirable that they be used conjointly because it facilitates the Aremoval operation. I also prefer to'inake the frames andthe plates so that the plates can be inserted' or removed from either end, and this is theway I have shown rthem inthe drawing.. The

edge of the holder which co-operateswith the edge projection of the plate is belowV the base of the lips 9 where they connect with ythe body of the frame and this makes it neces- Y sary to insert-the plate by transverse Vmovement into engagement with the bead at the bottom of the frame as shownfin Fig. 1 after which the plate is moved to the left into position on'the frame. It will be found convenient in removing a plate from a frame to press down on the right hand end of the frame with the thumb of the right hand and at the Asame time press upward upon fthe adjacent pressure section with the foreinger of the right hand until the plate is clear of the retaining stop at the right end of the plate, and substantially at the 'same time slide the plate by pressure of the thumb of the left hand to the right until it can be grasped by the thumb and forefinger of the right hand and lifted away from the frame. These printing devices can be used interchangeably with old Y printing devices and the plates .can be used in old printing devices but-fthe .old plates cannot be used in the new frames because they are not constructed to cooperate with theV retaining and holding devices of the' frame.l

The wedge projection on the plate cooperates with the holder 11 to hold the plate ina `iiXed position on the frame and prevents undesired movement thereof during useof the device. The invention simplifiesthe construction of the printing 'device and also simplifies and facilitates the insertion and removal of plates without damage lto the frame nor injury to `the operator. The invention can be embodied in printing devices having two platesl? and 18, Fig. 4, arranged one above another upon the frame 19. In this construction lips 2O are employed asthe equivalent for the bead to yengage the lower edge of the plate 17 and the pressure sections 21 are made of su'icient size and are located to overlap sections of both plates, thereby enabling them to be operated for the removal of either or both plates as desired.

I fh ave shownthe invention in selected embediments which are sufficient tor this application butI realize that changes inthe form,

constructionfand arrangement of parts may be necessary .to adapt the inventiontoy other .typesof printing devices which are or may be requiredrto meet the .demandsof business and I reserve the right `to make all such changes within'the scope of thel following claims.

claim:l 1; A printing device .of the class described vcomprising a frame, a printing plate having typeA characters thereon,r means for detachably retaining the plate onthe frame, said means' comprising` a device on the frame engaging an end vof the plate, and afyieldin'g pressure section on the frameback of the plate adjacent said end thereof adapted lto be operated to lift said end of theplate sufficiently to cleark said retainingdevice and permit removal of the plate from the frame.

2; A printing device of the class described Y comprising a frame, a printing plate having type characters thereon, means for detachably retaining the plate on the frame, said means comprising a device on the frame engaging an end'of the plate, anda yielding pressure section on the vframe back of the plate and adjacent said end thereof, the Vend of the frame being bodily and vyieldingly bendable and said Vpressure section adapted to be operated to release the plate from said retaining device and permit-removal of the plate from the frame.

3; A printing device of the vclass described Y comprising a frame, a'printing plate having typecharacters thereon, said frame having a spacing flange at one end and on its back,

means for'detachably retaining thev plate on the frame and including, a retaining device Yadjacent said flange andprojecting above the f :front face of the body of the frame to engage an edge of the plate, and'means for moving thelplate to release it from said retaining device to permit removal of the plate from the frame. 'f

4. A printing device of the classV described comprising a frame, aprinting plate having .typ-e characters thereon, means for tdetachably retaining the plate on they frame and including means overlapping portions` of the top and bottom edges of the plate and also including means abutting the end edges of the plate, a wedge projection on-.one edge of the plate, and means onthe frame cooperating with said wedge projection for holding the plate in av fixedposition in the retaining dev vices'on the frame.'

5. vA printingl device of the class described comprising a frame, a vprinting plate having type characters thereon, means for detach-- 1 ably retaining theplate on the frame, said plate havingr retainer ,projections spaced apart on its upper edge anda wedge projection between said 'retainer proj eetions, said retaining means overlapping said projections iso and portions of the bottom edge of the plate and abutting the end edges of the plate, and ymeans on the frame cooperating With said Wedge projection for holding the-plate in a fxedfposition in the retaining devices on the frame. Y

r6. A printing device of the class described comprising a frame, a printing plate having type characters thereon, retaining means for detachably retaining the plate on the frame, said plate having retainer projections spaced apart on its top edge and a Wedge projection vbetween said retainer projections, and a holder on the frame cooperating With said Wedge projection for holding the plate in al fixed position in the retaining means on the frame, the retaining means which engage the top edge of the plate being spaced apart to permit the bottom edge of the plate to be engaged With its retaining means by a transverse movement of the plate and said projections to be engaged with the retaining devices therefor by an endWis-e movement of the plate.

7 A printing device of the class described comprising a frame, a printing plate having type characters thereon, means for detachably retaining the plate on the frame, said means comprising a device on the frame forming a stop at one end of the plate, and a yielding pressure section formed by cutting the frame, said pressure section being located back of the plate and opposite said stop and adapted to be operated to lift the end of the plate sufficiently to clear said stop.I

8. A printing device of the class described comprising a frame, a plurality of printing plates having type characters thereon, means for detachably retaining the plates on the frame, said means comprising devices on the frame forming stops for adjacent ends of the plates, and a yielding pressure section on the frame back of and overlapping the plates vadj acent said ends thereof and adapted to be operated to lift the ends of the plates suiiiciently to clear the stops.

9. A vprinting device of the class described comprising a frame, a printing plate having type characters thereon and removably mounted on the frame, an upwardly extending stop at an end of the frame against Which an end of the plate is abutted, said frame having a plurality of cooperating slots spaced apart and arranged in substantial alignment adjacent the end ofthe frame to increase the flexibility of the end portion of the frame and en able it to be easily bent to clear the stop from the end'of the plate and permit removal thereof from the frame.

10.l A printing device of the class described comprising a frame, a printing plate having type characters thereon, means overlapping top and bottom edges of the plate for retaining the plate on the frame, said plate being freely movable in said overlapping retaining means, and cooperating means on the frame and on the plate for securing the plate in fixed position on the frame by a Wedge effect When the plate is moved in said retaining means to final position on the frame.

11. A printing device of the class described comprisingv a frame, a printing plate having type characters thereon and removably mounted on the frame, and a plurality of stops spaced apart and stamped up on the front of the frame in substantially vertical alignment adjacent an end thereof, one of said stops being abutted by an end of the plate, said stamped stops increasing the flexibility of the frame so that the end portion may be easily and temporarily bent to clear the abutted stop from the end of the plate and permit removal of the plate from the frame.

l2. A printing device of the class described comprising a frame, a printing plate having type characters thereon and removably Vmounted on th-e frame, said frame having a plurality of slits arranged in substantially vertical alignment adjacent an end thereof and the frame beingV stamped at said slits to form stops spaced apart on the front of the frame, one of said stops being abutted by an end of the plate, said slits and stops increasing the flexibility of the frame so that the end portion may 'be easily and temporarily bent to clear the abutted stop from the end of the plate and permit removal of the plate from the frame.

13. A printing device of the class described comprising a frame, a printing plate having type characters thereon and removably mounted on the frame, and a plurality of stops spaced apart and stamped up from the front of the frame in substantially verticall alignment adjacent an end thereof, one of said stops being arranged to be engagedby an end of the plate, said stamped stops increasing the flexibility of the frame so that the end portion may be easily and temporarily bent to clear the stop from the end of the plate and permit removal of the plate from the frame, and a yielding section in the frame under the plate adapted to be pressed to clear the plate from said stop.

14. A printing device of the class described comprising a frame, a printing plate having type characters thereon, meanson the frame for removably retaining the plate thereon, means for making one end portion of the frame yieldingly bendable under pressure, and said retaining means comprising an Aupwardly extending member at said yielding portion of the frame adapted to abut the comprising a frame, a printing plate havingv type characters thereon, means on the frame for removably retaining the plate thereon, said frame being weakened at one end portion to permit said end portion to yieldingly bend under-pressure, and said retaining means comprising an upwardly extending member on said'end portion adapted to abut the end of the plate under normal conditions and to clear the plate and permit removal thereof from the frame when said end portion is depressed.

VALENTINE J. MOHLER.

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