US3090303A - Portable credit card imprinter - Google Patents

Description

May 21, 1963 D. 1. MANNERS ETAL 3,090,303

PORTABLE CREDIT CARD IMPRINTER Filed April 1, 1960 3,090,303 ce Patented May 21, 1963 1 2 3 090 303 able credit card imprinter structure adapted to transfer i a E u, n WE indicia from embossed credit card surface to an invoice Don I PlglLRlleglhiwgo m., ld Jack form or the like and which is capable of being operated Whedon, 5 Ridgewood Road Elk Grove Village IIL While being held in the palm of the yattendanhts hand. Filed Apr. 1, 1960, Ser. No. 19,383 5 A further object of the invention is to provide a credit Claims. (Cl. 101-269) card imprinter construction which may be carried in a holster upon the person of an individual such as a gasollhis invention relates generally to imprinter devices line service station or other attendant, and which may for recording indicia from embossed surfaces and more serve as a writing surface for the signature of the cusparticularly, is concerned with providing a novel iml0 tomer. printer structure for use with credit cards `and the like, An additional object of the invention is the provision said imprinter being portable and adapted to be carried of a portable credit card imprinter structure wherein upon the person of the user for operation directly at the means are provided for the insertion vof a credit card site of a purchase. and an invoice form and wherein chemical or other Cards and the like, carrying thereupon identifying l5 roller means are provided for impressing the embossed indicia in the form of embossed markings or protrudindicia upon 4an invoice surface and transferring a mark ing surfaces are widely utilized for credit purchases parthereon corresponding to the said embossed indicia, said ticularly at gasoline service stations and the like. These imprinter being provided with guide rneansland handle `cards, generally made from stiff materials such as plasmeans whereby the roller means may be drawn across "tic or metal, are handed to the service station attendant the length of said invoice and returned to its original at the time of purchose. The attendant then records the position, thereby permitting the signature of the cusinformation contained thereon upon a pre-printed form, tomer to be impressed in the designated place and Ithe said form being then presented to the purchaser for his subsequent removal of the completed invoice and the signature and then retained by the attendant for billing credit card. to the purchaser. Generally the information required Still other objects and advantages will become evident is transferred to the invoice form by inserting the card to the skilled artisan as the description proceeds. In into an impiinter device having pressure exerting means accordance with the patent statute we have illustrated therein whereby the embossed indicia may be transferred and described a preferred embodiment of our invention, as a marking to the invoice slip by the pulling of a lever although it should be obvious that various changes in secured to said pressure means, said action forcing ink the size and minor details of the structure may be made impregnated tape or the like against the raised surfaces without departing from the spirit of the invention. and thus transferring or printing the indicia from the Referring to the drawings in which ythe same characraised surfaces to said invoice. ters of reference are employed to indicate corresponding Devices of the character heretofore used for the above or similar parts throughout the several iigures of the mentioned purposes have been heavy, cumbersome and drawings: must be permanently secured either to a wall or post, or FIG. 1 is a top plan view of our portable credit card to a heavy table whereby the main body of the imprinter imprinter device illustrating lthe credit card and invoice is anchored to a substantial object so as to prevent upset in' position for imprinting.

during use, 40 FIG. 2 is a sectional View taken along lines 2 2 of A second, and perhaps greater disadvantage of prior FIG. land in the direction indicated.

imprinting devices is the requirement that the said de- FIG. 3 iS a front end-011 elevational view of the imvices must be located within the enclosed area of the Printer 0f FIG l With a Portion Jfliereof SllOWll in Section service station itself to prevent exposure, theft or mis- '0 illustrate interior Structure thereof.

handling thereof. This requires the attendant to leave FIG- 4 is enlarged fragmentary sectional VieW 0f Said the customer at the gasoline pump island, which is the 40 irnlirlnier With the roller in Printing Positionusual site of purchase, return to the service station and FlG- 5 is arednoed fragmentary VieW 0f ille end Wall 0f imprint the invoice there, then deliver the imprinted said tray showing rnodified end guide Ineensinvoice back to the customer, return the card and ob- The inVen'fion is generally Coneerned Willi PIoViding a tain the customer@ signature on Said invoi The portable credit card imprinter particularly adapted for use invoice generally is presented to the customer for his by gasoline seryiCe station attendants although not limited signature upon a clipboard or the like hard surface. thereto- Said nnprinier isoapable of being Carried nPon Not only does this process cause unnecessary activity for the Person of the user es 1n a holster 0I` the like S0 that the attendant, but results in considerable delay for the Sad attendants in ay niark a Preffornledinyiee at the customer and resulting unwarranted dissatisfaction with Yohlolo bolng SerVlood Without belng reqnlred lo go back the performance of the service station attendants with lolo thosorVloe station t0 n se an lmprlnflng deVlCe there. accompanying loss of good will. Moreover, because of The devloo generally CornPrlses e snoslanlally rectangular such delay, other customers are kept waiting for service metal lfaY: the bottonl thereof hnVlng a ileXlble backing and hence may be lost through no fault of the attendant. member Wlth opslandlng Prolrnsions enabling the 1ndeX- Considerable expense is entailed in installing and mg of the credit card in a predetermined location therein.

maintaining the prior bulky and heavy devices at each The credlt Garfi maylje mserled Into the device thrqugh a of the gasoline pumping islands of said station and even slot providedin the side of saidtray: Roller means is prothen the attendant must leave the customer to use the ded Whlch lmPreSs the Paper-mvo1ce upon the embossed imprimen sur-face protrusions of the credit card and cause a marking Accordingly, it is the primary object of the invention to show lhrollgh' The roller means are mounted n Pon e to provide a structure for a credit card imprinter which Sllaft Wlncll 1n 'fl-rn moves along a track PrOVlded 1n the is light Weight and portable, being adapted to be Car. Sides of said tray whereupon the roller is brought down ried upon the person of an attendant or the like for use nel and ln Pressure egainst the lop of said inVoiee slip directly at the site of purchase Without the attendant uPon Wliiell the marking is desired- A Wire bail OI handle leaving the customer, said irnprinter device substantially is provided secured to said roller las for example, to the eliminating the disadvantages hereinabove enumerated. ends ofthe shaft mounting same, for pulling Athe roller for- Another object of the invention is to provide a portward along the said track for imprinting. The front wall of the tray may be provided with means for guiding said wire handle during the pulling thereof, and said latter means may also be provided with means for permitting the free end portion of the handle to be withdrawn from the tray so that the wire may be swung backwards to allow removal of the marked invoice form from the irnprinter. It is apparent that the entire operation may be done with the tray being held in the palm of the attendants hand. Means are also provided to lock the wire bail or handle in position when the imprinter is not in use.

Referring to FIG. 1 ofthe drawing wherein the imprinter embodying our invention Vis designated yby reference character 10, said imprinter is shown with the credit card 12 and the blank invoice slip 14 being inserted in imprinting position thereon. y

The imprinter comprises a substantially rectangular tray 16 having vertical side walls 18 and end walls 22 and 24. The base or floor 20 of said tray 16 is lined with a layer 26 of a resilient material such as molded soft rubber, and said layer 26 is provided with a group of upstanding protrusions 28 which serve as stop members for indexing the credit card when same is inserted into said tray. These stop members also provide spacing between the invoice and the layer 26 so that the card 12 may be slipped therebetween. A slot 27 is provided in one of said walls 13 and is adapted to permit ther passage of said credit `card 12 into said tray 16, the card being inserted until it abuts the stop members 28. Embossed indicia 32 may be provided upon the layer 26 in a predetermined location adjacent the position of the embossed indicia contained on the credit card 12. This indicia 32 may be in the form of upraised rubber or metal type or printing blocks or the like and is generally utilized to convey the identifying indicia of the seller upon said invoice. An adjustable date stamp liner may also be utilized so that current dates may be inserted therein.

A pair of coextensive elongate slots 34 are provided along the length of said side walls 1-8, one in each said wall and said slots being parallel one to the other. Mounted in said slots at one end of said tray 16 adjacent wall 22 thereof is a shaft 36, said shaft being secured in place by washers 38 and fastening means 40 so that Said shaft is movable along the length of ysaid slots 34 across the entire length of the tray 16. Mounted for rotation uponV said shaft 36 is a roller 42. Said roller 42 is formed from a non-frangible material such as soft rubber or felt or some synthetic resinwhich has been chemically treated or impregnated with a printing material such as ink or the like whereby when said roller is drawn against material which has been placed over an embossed surface, a marking corresponding to said embossedl surface Will be made upon said material. The roller is disposed closely adjacent one side wall of said tray so that as the shaft '36 is drawn across the tray 16, the roller comes into contact with the embossed surfaces of the credit card 12 and other protruding indicia, through the paper of the invoice slip 14. Wall 22 may also be provided with an outwardly extending ilange (not shown) to shield the roller 42 when the latter is rest position.

The track formed by the slots 34 forces the shaft and roller 42 to be drawn across the length of the tray 16 so that the said roller 42 exerts a pressure against the said embossed surfaces. This is accomplished by having that part of the slot 34 which is designated 46 disposed parallel to but lower than portion 48 of said slot 34, the two portions being connected by portion 50 thereof.

It should be noted that the pressure exerted by the roller upon the invoice surface and against said embossed sur- `faces is suiiicient to print markings representing said indicia upon the invoice primarily because of the resilient nature of the lining layer 26.

The means provided for pulling the shaft 36 and roller 42 acrosssaid tray comprises a U-shaped bail 52 lhaving a looped handle 54 and ends `56 .secured around said shaft adjacent both ends thereof and on the interior of said tray 16. The bail 52 is formed from a spring wire, the ends thereof exerting a resilient force against the respective side walls 18 of the tray. The said -bail 52 is threaded through a pair of spaced horizontal slots 58 and 5S formed in the front Wall 24 of said tray so that when the looped handle 54 is pulled, the shaft 36 and its roller 42 are forced to follow the slot or guide means 34 with pressure being exerted by said roller upon the invoice slip against the embossed indicia 31 and 32. Vertical slots 60 and 62 are provided in said front wall 24 communicating with a respective one of the horizontal slots 58 and 58. These latter slots 60 and 62 permit upraising of the bail 52 to permit removal of the imprinted invoice slip. The left portion of the bail 52 may be squeezed so that the arms thereof pass through the said slots 60 and 62, and 4the iinished slip thus may be removed. Although shown in this embodiment as cooperating vertical and horizontal slots, an equivalent construction may -be obtained by utilizing a pair of arcuate slots or paths formed in said front wall. Said front Wall may also have a midportfion 63 thereof blanked out leaving portions 65 and 66. In this case slots 5S and 58 would 'be in communicay.

tion with one another, and slots 60 and 62 would be continuous with the such continuous slots 58 and S8', and, in actuality, would be a single wide slot, the walls thereof being either arcuate or straight.

From the description above the operation of the novel portable imprinting device should be apparent, however, -a short description thereof for illustrative purposes in connection with gasoline service station credit purchases may -be still in order. Initially the device may be readied for use by pre-insertion of a blank invoice form 16 therein by squeezing the bail S2 so that it passes through slots 60 and 62. The bail 52 isl then replaced through said vertical slots to lie threaded through horizontal slots 58 and 58. Thus loaded the device may be carried in a holster (not shown) adapted to be worn upon the person of the attendant as on a belt or the like. The imprinter may just as easily be worn unloaded, the blank invoice being placed therein at the time of use.

When a purchase is made, the credit card identifying the purchaser is handed to said attendant and inserted into the imprinter through the slot 27 provided therein. Then, for example, the quanitity of gasoline purchased and the price is written upon said invoice in the space provided, the bail 52 is then drawn by the .looped handle 54 so that the shaft 36 passes along the guide means track 34 with the roller 42 in pressure contact with the invoice over the embossed surfaces, the imprint being made, the bail then being pushed back -to return the roller to original condition and the credit card withdrawn.

The tray containing the thus completed invoice is then presented to the customer for his signature, and atte-r said signature is placed thereon, the attendant squeezes the bail 52, removes the invoice, perhaps after checking the signature thereon with that on the credit card for veritication of identity, and gives the credit card and a copy of the invoice to the customer, retaining a copy for billing. The imprinter may then be reloaded with a `fresh invoice and inserted in the holster ready for repeated use.

The invention may conceivably need only be used for the imprinting process; any handwritten notations, includling the notations of amount of purchase, signature of purchaser, etc. being placed on the invoice after removal thereof from the imprinter device, utilizing the underside thereof as a support.

In describing the operation of our invention, a certain order of operational steps were described above. It should be clearly understood that the order so stated is not critical and some steps can be taken out of said order, interposed with others, or even left out without departing from the scope of the invention herein described.

The invention also conceivably may comprise a tray device wherein the floor portion 20, with its resilient layer 26 may be hinged to the rear wall 22, or even to portions of the side walls 18 closely adjacent the right hand portion of slot 34. The front and rear Walls of the tray may possibly be eliminated altogether, with the tray floor being separated from the slotted walls i8, and said removable tray having upstanding resilient clamp portions substituting for said Walls 22 and 24.

The invention also contemplates that the entire credit card may be accommodated within the said imprinter device by increasing the width thereof. While the slot -27 maybe convenient for inserting the credit card 12, said card may be merely placed upon the interior of the tray with the embossed area upraised, the card resting upon the resilient layer 26, with the invoice form placed over said card.

A substantial savings in time results from the convenience in utilizing the invention by conducting the entire transaction at the exact site of the transaction without leaving the customer, without returning to any main oiiice, or other area, station, or going anywhere else to imprint said invoices. MoreI important is the increased customer satisfaction resulting from speedy service obtainable through the use of our novel portable imprinter.

Although We have particularly shown our portable irnrinter associated with use in a gasoline service station, it is obvious that our device is applicable to any use whereupon embossed indicia 4is `desired to be imprinted upon a material and said imprinting device is `desired to be carried upon the person of the individual using same.

=It is believed that our invention, its mode of operation and construction and assembly, and many of its advantages should be readily understood from the foregoing without further description, and it should also be manifest that while a preferred embodiment of the invention has been shown and described for illustrative purposes, the structural details are nevertheless capable of Wide varation within the purview of our invention as defined inthe `appended claims.

We claim:

l. A portable imprinter device for recording indicia from embossed surfaces of :credit cards and :the like and adapted to be carried upon the person of an individual and comprising, an open-topped tray member adapted to receive a credit card and blank invoice therein, said invoice being entirely within the tray, roller means for forming a visible mark representative of said indicia contained on said embossed surface, `and means for passing said roller means in pressure Contact with said embossed surface with the blank invoice therebetween, said llatter means comprising spring-like free-ended grasping means for said roller means and pivotally mounted thereto, track means adapted to receive and guide said roller means along the length of said tray member, and guide means at one end of said tray cooperating with said track means to force the roller means along `a pressure path to bring same in pressure contact with said blank invoice, said guide means comprising at lleast a pair of spaced Lashaped slots formed at one end ofthe tray, the upper ends of said slots opening to the said one end of said tray, said springlike free-ended grasping means being threaded through isaid lslots and adapted to be pulled back and forth across the length of said tray, said grasping means adapted to be removed from said slots when said roller means is disposed at the other end of said tray.

2. A structure as described in claim l in which :said tray member is substantially rectangular in configuration and has upstanding vertical walls, and said track means is formed in a pair of said walls.

3. A structure as described in claim l wherein said tray is lined with a lining of non-frangible resilient material, and said lining is provided with a plurality of upstanding protrusions spaced at predetermined locations thereon,

4. A structure as described in claim l wherein said tray member has upstanding walls, and said track means comprises an elongate slot formed in each of a parallel pair of said walls, said` slots being parallel one to the other and co-extensive with the length of said pair of Walls, a shaft mounted for movement along said slots, said roller means mounted for rotation upon said shaft, said shaft adapted to be pulled along said slots, a portion of said slots coextensive with said embossed surfaces being spaced closer Ito the iioor of said tray than the remaining portion of said slots.

5. A portable irnprinter device for recording indicia from embossed surfaces of credit cards and the like and `adapted to be carried upon the person of an individual, said device comprising a tray for receiving a blank invoice slip, said tray having upstanding vertical walls, card receiving means formed in said tray, guide track means provided in the side walls of said tray, a shaft member mounted for movement along said track means, roller means mounted for rotation upon said shaft member and positioned therealong to pass over the embossed surfaces of said credit card, and means provided to move said shaft along said .track means with the roller means brought into pressure contact with said blank invoice Aslip over said embossed surface to transfer a mark upon said invoice equivalent to the indicia represented by said embossed surfaces, said latter means comprising pull means secured Vto said roller means and slot means in one end of said tray `adapted to have said pull means threaded therethrough, said slot means comprising a pair of spaced horizontal slots substantially co-planar with a portion 0fthe track means and a pair of passageways formed in said end Wall communicating between a respective one of said slots and lthe top of said wall, said pull means adapted to be received therethrough into communication with said horizontal slots.

6. A portable imprinter device for use in conjunction with credit cards and the like and adapted Ito transfer indicia represented by embossed surfaces of said cards to invoice slips, said imprinter device comprising a substantially rectangular tray member having upstanding vertical Walls, :slot means disposed in one of said side Walls for insertion of said credit card, stop means disposed upon the oor portion of said tray to limit entry of said credit card therein, roller means mounted for rotation at one end of said tray, guide track means and means for moving said roller means along said track means whereby said roller means is brought into pressure contact with the embossed surface of -said credit card with an invoice slip therebetween for marking said invoice slip with the indicia represented by said embossed surface, said track means comprising a pair of elongate slots formed in each of a pair of opposite walls of the tray coextensive with the length thereof, and said roller means comprises Ia shaft member mounted at one end of the tray for movement along said track means and a chemically impregnated roller member is mounted for rotation on said shaft closer to one of said side Walls than the other, and a wire handle secured to the ends of said shaft on the interior of said tray, said handle adapted to draw the shaft along said slots to pass the roller in pressure contact with the said embossed surface with the invoice slip therebetween, `wherein the fron-t wall of said tray has a pair of spaced co-pianar horizontal slots therein for passage of said handle therethrough and said Wall is provided with a pair of spaced vertical slots one of each communicating with a respective horizontal slot, said handle being adapted to be squeezed whereby it can pass through said vertical slots to facilitate removal of said invoice.

7. A portable irnprinter device for use inconjunction with credit cards and the like and adapted to transfer indicia represented by embossed sur-faces of said cards to invoice slips, said imprinter device comprising a substantially rectangular tray member having upstanding vertical walls, slot means disposed in one of said Walls for insertion of said credit card, stop means disposed upon the floor portion of said tray to limit entry of said credit card therein, roller means mounted for rotation at one end of said tray, guide track means and means yfor moving said roller means along said trackmeans whereby said roller means is brought into pressure contact with the embossed surface of' said credit card within an invoice slip therebetween for marking said invoice slip with the indicia represented by said embossed surface, said track means comprising a -pair of elongate slots formed in each of a pair of opposite walls of the tray coextensive with the length thereof, and said roller means comprises a shaft member mounted at one' end of the tray for movement along said track means and a chemically impregnated roller member is mounted for rotation on said shaft closer to one of said side walls than the other, and said means for moving said roller means comprises a Wire handle securred to the 'ends of said shaft on the interior of said tray, said handle adapted to draw the shaft along said slots to pass the roller in pressure contact with said embossed surface with the invoice slip therebetween.

8. A portable imprinter device for trecording indicia from embossed surfaces of credit cards and the like and adapted to lbe carried upon the person of an individual, said device comprising a tray for receiving a blank invoice slip, said. tray having upstanding vertical walls, card receiving means Iformed in said tray, guide track means provided inthe side walls of said tray, a shaft member mounted for movement along said Vtrack means, roller means mounted for rotation upon said shaft member and lpositioned therealong to pass over the embossed surfaces of said credit card, and means provided to move said shaft along said track means with the roller means brought into pressure contact with said blank invoice slip over said embossed surface to transfer a mark upon said invoice equivalent to the indiciarepresented by said embossed surface, said latter means comprising springlike free-ended pull means pivotally secured to said shaft member and slot means in lone end of said tray adapted to 'have said pull means threaded therethrough, said slot means comprising a pair of spaced horizontal slots substantially co-planar with a portion of theV track means and a pair of substantially vertical passageways formed in said end Wall each communicating between a respective one of said slots and the top of said wall, said .pull means adapted to be received therethrough into communication Iwithin said horizontal slots.

9. A porta-ble imprinter device for recording indicia from embossed surfaces ofcredit cards and the like and adapted to be carried upon the person of an individual and comprising, an open-topped tray member adapted to receive a credit card and blank invoice therein, said invoice being entirely within the tray, roller means for forming a visible mark representative of said indicia contained on said embossed surface, and means -for passing said roller means in pressure contact with said embossed surface with the blank invoice therebetween, said latter means comprising spring-like free-ended grasping means for said roller means and pivotally mounted thereto, track means adapted -to receive and guide said roller means along the length of said tray member, and guide means at one end of said tray cooperating with said track means to force the roller means along a pressure path to bring same in pressure contact with said blank invoice, said spring-like free-ended grasping means comprising a bail of wire or the like of U-shaped configuration and having its ends .pivotally secured to said roller means, said guide means comprises a horizontal passageway formed at one end of said tray and a substantially Wider vertical passageway also formed at said one end of said tray in communication with the horizontal passageway between the ends thereof, said bail threaded through said passageways, said tray having a pair of Vertical side walls, and said track means is formed in said side walls and comprises a pai-r of elongate slots each formed in one of said side walls, said slots being parallel one to the other, said slots being positioned lower at said one end than at the opposite end of said tray, said roller means being adapted to be passed over said embossed surface in pressure contact therewith by pulling ysaid bail outward through said passageways in said one end, said roller means being mounted in -said slots so as to follow same while being pulled across the length of said tray, and said roller means adapted to be returned to its original position in like manner.

l0. A portable imprinter device for recording indicia from embossed surfaces of credit cards and the like and adapted to be carried upon the person of -an individual and comprising, an open topped tray member adapted to receive a credit card and blank invoice therein, said invoice being entirely within the tray, roller means for forming a visible mark representative of said indicia contained on said embossed surface, and means for passing said roller means in pressure contact with said embossedif. surface with the blank invoice therebetween, said latter means comprising spring-like free-ended grasping ends for said roller means and pivotally mounted thereto, said means adapted to receive and guide said roller means along the length of said tray member, 'and guide means at one end of said tray cooperating with said track means to force the roller means -along a pressure path to bring same in pressure contact with said blank invoice, said spring-like free-ended grasping means comprising a bail of wire or the like of U -shaped configuration and having its arms pivotally secured to said roller means, and said guide means comprising at least a pair of spaced L-shaped slots formed at one end of said tray and being in mirror image'relation one to the other with the vertical legs thereof facing one another, said bail being threaded through said passageway/s, said tray having a pair of vertical side walls and said track means is formed in said side walls and comprises a pair of elongate slots each formed in one of said side walls, said slots being parallel one to the other, said slots being positioned lower at said one end than at the opposite end of said tray, said roller means being adapted to be passed over said embossed surface in pressure contact therewith by pulling said bail outward through said passageways in said one end, said roller means being mounted in said slots so as to follow same while being pulled across the length of said tray, and said roller means adapted to be returned to its original position in like manner.

References Cited in the le of this patent UNITED STATES PATENTS 1,305,778 Cushing et al. June 3, 1919 2,102,787 Christenson Dec. 21, `1937 I2,163,948 Huebner June 27, 1939 2,443,783 Bogin lune 22, 1948 2,530,049 Ekblom Nov. 14, 1950 2,555,148 Nitchell May 29, 1951 2,606,494 Vogt Aug. l2, 1952 2,620,730 Gilbert Dec. 9, 1952 2,694,571 Reynolds et al. Nov. l6, 1954 2,848,943 Simons Aug. 26, 1958

Claims (1)

1. A PORTABLE IMPRINTER DEVICE FOR RECORDING INDICIA FROM EMBOSSED SURFACES OF CREDIT CARDS AND THE LIKE AND ADAPTED TO BE CARRIED UPON THE PERSON OF AN INDIVIDUAL AND COMPRISING, AN OPEN-TOPPED TRAY MEMBER ADAPTED TO RECEIVE A CREDIT CARD AND BLANK INVOICE THEREIN, SAID INVOICE BEING ENTIRELY WITHIN THE TRAY, ROLLER MEANS FOR FORMING A VISIBLE MARK REPRESENTATIVE OF SAID INDICIA CONTAINED ON SAID EMBOSSED SURFACE, AND MEANS FOR PASSING SAID ROLLER MEANS IN PRESSURE CONTACT WITH SAID EMBOSSED SURFACE WITH THE BLANK INVOICE THEREBETWEEN, SAID LATTER MEANS COMPRISING SPRING-LIKE FREE-ENDED GRASPING MEANS FOR SAID ROLLER MEANS AND PIVOTALLY MOUNTED THERETO, TRACK MEANS ADAPTED TO RECEIVE AND GUIDE SAID ROLLER MEANS ALONG THE LENGTH OF SAID TRAY MEMBER, AND GUIDE MEANS AT ONE END OF SAID TRAY COOPERATING WITH SAID TRUCK MEANS TO FORCE THE ROLLER MEANS ALONG A PRESSURE PATH TO BRING SAME IN PRESSURE CONTACT WITH SAID BLANK INVOICE, SAID GUIDE MEANS COMPRISING AT LEAST A PAIR OF SPACED L-SHAPED SLOTS FORMED AT ONE END OF THE TRAY, THE UPPER ENDS OF SAID SLOTS OPENING TO THE SAID ONE SAID TRAY, SAID SPRINGLIKE FREE-ENDED GRASPING MEANS BEING THREADED THROUGH SAID SLOTS AND ADAPTED TO BE PULLED BACK AND FORTH ACROSS THE LENGTH OF SAID TRAY, SAID GRASPING MEANS ADAPTED TO BE REMOVED FROM SAID SLOTS WHEN SAID ROLLER MEANS IS DISPOSED AT THE OTHER END OF SAID TRAY.

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