Abstract:
A portable imprinter for transferring data, in the form of raised characters on a credit card or the like, to a receiving paper by pressure. A pressure element is mounted directly in an actuator which slides in grooves formed in the wall of a frame member, and travels across an opening into which it protrudes slightly to press the receiving paper with its transfer element against the card.

Description:
BACKGROUND OF THE INVENTION 
     This invention pertains to the general field of printing, and particularly to means for imprinting on a document the data contained in the form of raised characters on a device such as a credit card. 
     In general, it is well known to record data in the form of raised letters on a metallic or plastic blank, and then use the blank as a printing member, in combination, for example, with an inked ribbon, to transfer the data to new locations such as envelopes, letterheads, or department store or filling station sales slips. Apparatus for such applications is generally used indoors, out of the weather, in relatively fixed locations, so that portability, ruggedness, low cost, and simplicity of construction are not controlling design factors. 
     Considering for the moment the application of imprinters in filling stations, it is at present necessary for the attendant, after he has performed the services desired by the customer, to take the customer&#39;s credit card with him into the station, imprint a sales slip, add pertinent details of the transaction, return to the customer with the imprinted form, return the customer&#39;s credit card to him, wait while the customer signs the sales slip, give the customer his signed copy, and return the original to the station for safekeeping. Sometimes, in fair weather, some of this walking can be obviated by installing an imprinter on an &#34;island&#34; at the station. However, there frequently occur &#34;bottlenecks&#34; where several employees of the station must wait their turn to use the imprinter. 
     My invention comtemplates an imprinter so light, simple, durable, and inexpensive as to justify the provision of one such unit for each employee of a store, filling station, etc., to be carried with him if need be, ready for use at any time or place. With the advent of driver&#39;s licenses with raised letters, a unit could be made a part of the equipment of every police car, facilitating and shortening the preparation of traffic tickets and similar instruments. Other applications of an inexpensive portable imprinter will doubtless occur to the reader out of his own experience. 
     SUMMARY OF THE INVENTION 
     My invention comprises a portable imprinter in which the pressure member or platen is a roller mounted on a shaft fixed rigidly to arms which are themselves slidable between guide members in the form of grooves formed in opposite walls of a housing having a top surface with an opening through which the pressure member may project slightly from below. The document to be imprinted is placed on the top surface and a hinged member containing the imprinting card or other element is pivoted into contact with the document. A straight pull on a handle connected to the ends of the arm remote from the pressure member is all that is needed to cause the imprinting of the recorded data, using conventional forms of carbon paper or similar transfer inserts. 
     By my structure, the intensity of imprinting may be somewhat regulated by the pressure manually exerted on the imprinting card. The structure is simplified in the extreme, no cradle, carrier, or other accessory to the platen itself being necessary, and the number of moving parts being reduced to one, or two if the hinged member is included. The simplicity of construction and operation make my arrangement very inexpensive and convenient, and proper selection of materials can make its weight as small as is its actual size, compared to prior commercially available structures. 
     Various advantages and features of novelty which characterize my invention are pointed out with particularity in the claims annexed hereto and forming a part hereof. However, for a better understanding of the invention, its advantages, and objects attained by its use, reference should be had to the drawing which forms a further part hereof, and to the accompanying descriptive matter, in which there is illustrated and described a preferred embodiment of the invention. 
    
    
     BRIEF DESCRIPTION OF THE DRAWING 
     In the drawing, 
     FIG. 1 is a perspective view of an imprinter according to my invention; 
     FIG. 2 is a view of the invention in side elevation; and FIGS. 3, 4 and 5 are sectional views taken along the line 3--3 of FIG. 1 and the lines 4--4 and 5--5 of FIG. 2; respectively. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     As shown in FIG. 1, an imprinter according to my invention comprises a frame member 10 and a carrier member 11 connected by a hinge 12 for pivoting between an open position, shown in solid lines, and a closed position, suggested by the broken lines. 
     Frame member 10 comprises a housing having a top 13 with a flat upper surface 14 surrounding a rectangular opening 15. Depending from top 13 is a wall made up of a pair of sides 16, 16 and a pair of ends 17, 17. Each side is provided with guide members 20, 21 which cooperate to define a guideway or track 22. Arms 23 are arranged to slide with respect to frame member 10 in the guideways and, are connected at first, outer ends 24 by a first cross member or handle 25, to which the arms are connected by suitable means such as large allen head screws 26. 
     Sides 16 are apertured, in the areas between the guide members, by slots 27 of considerable width. A second cross member or shaft 30, of diameter less than the width of slots 27, extends across the frame below top 13, between the ends 31 of arms 23 remote from handle 25, and is rigidly connected thereto by fasteners 32 which may be like screws 26. 
     A pressure member or platen roller 33 is mounted on shaft 30 within frame member 10 so that its periphery projects slightly above surface 14. I prefer that this periphery be slightly resilient, and the roller may be free to rotate on shaft 30 if desired. The lengths of shaft 30 and handle 25 are such, compared to the dimensions of frame member 10 between the bottoms of guideways 22, as to hold arms 23 in smooth sliding relation between the guide members. I particularly desire that there be no contact between frame member 10 and shaft 30, so that all the force acting on roller 33 in a direction normal to surface 14 is conveyed by shaft 30 and arms 23 to guide members 20, 21. 
     Turning now to carrier member 11, one surface 40 thereof has a central slight recess 41 configured to receive a credit card: a pair of thin resilient holders 42 are secured to surface 40 by appropriate fasteners 43 to retain such a card in position when inserted in recess 41, and the end of carrier member 11 remote from hinge 12 has a recess 44 to facilitate insertion and removal of the card. Edges of carrier member 11 may have grooves 45 to facilitate opening the imprinter for insertion or removal of work pieces. If desired, top 14 of frame member 10 may be recessed as at 46 to accept fasteners 43, but if so, the recesses should be enough larger than the fasteners to avoid a punching effect on documents being imprinted. 
     In use, a credit card (not shown) is inserted in recess 41 of carrier member 11 under holders 42, with the raised letters directed outwardly, that is, toward frame member 10. Ordinarily, roller 33 will be in the position shown in FIG. 1, that is, in its position nearest hinge 12. The document to be imprinted is now positioned on surface 14, with opening 15 located where the imprint is to be made, and the imprinter is closed. It is understood that the imprinter is designed for use with forms having carbon paper or other transfer material appropriately positioned over the area to be imprinted. 
     Now a simple pull on handle 25, to the right in FIGS. 1-3, causes roller 33 to move across opening 15, firmly pressing the document against the card, to transfer markings to the document at locations and in patterns determined by the raised characters on the card. During this movement, the device is held closed, member 10 toward member 11, by the hand of the user not grasping handle 25. If desired, that handle may be pushed back to its original position before the device is opened, reinforcing the imprint. After the device is opened, the imprinted document is immediately available for inspection, signature, or addition of special notes, and the credit card may be easily removed for return to the holder. 
     Numerous characteristics and advantages of my invention have been set forth in the foregoing description, together with details of the structure and function of the invention, and the novel features thereof are pointed out in the appended claims. The disclosure, however, is illustrative only, and changes may be made in detail, especially in matters of shape, size and arrangement of parts, within the principle of the invention, to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.