US1660008A - heaton - Google Patents

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US1660008A
US1660008A US1660008DA US1660008A US 1660008 A US1660008 A US 1660008A US 1660008D A US1660008D A US 1660008DA US 1660008 A US1660008 A US 1660008A
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head
platen
writing
stop
movement
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J13/00Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
    • B41J13/10Sheet holders, retainers, movable guides, or stationary guides
    • B41J13/12Sheet holders, retainers, movable guides, or stationary guides specially adapted for small cards, envelopes, or the like, e.g. credit cards, cut visiting cards

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  • the present invention has to do with type-- writing machines of the flat-platen type, and
  • the invention also contemplates mechanism ofthe character referred to whereby the writing head, as
  • a stencil sheetis to be cut when a stencil sheetis to be cut, may be placed in definite and predetermined position over the platen so that fall of the type on to the stencil sheet willbe insured in the area covered by the normal ink spot made on the stencil sheet when the latter is placed in an imprinting machine or device. Accuracy of position oi the stenciled matter with respect tosuchink spotthus is attained, and the operator is not required to exercise any special care or skill in positioning the head for the cutting operation.
  • FIG. 1 is a top plan View of the herein described attachment in its application to a flat-platen typewriting machine, the dotted lines illustrating one position of the'writing head occupied by the latter with respect to the attachment.
  • Fig. 2 is an end elevation of the construction illustrated in F ig.' 1, a portion being in section, and the writing head being omitted.
  • Fig. 3 is a detail sectional View on the line 3-3, Fig. 1.
  • Fig. 4 is a similar view, Fig. 1.
  • Fig. 5 i is a face elevation and stencil sheet with respect to which the herein described invent-ion has particular utility.
  • Fig. 6 is a side elevation illustrating the attachment in its application to a fiat-platen of a record card typewriting machine, the head thereon being positioned as when adapted forprinting pur,
  • .poseso Fig. 7 is a similar view, the head of the typewriting machine being positioned as when adapted forstencil cutting purposes.
  • Fig. 8 is a detail sectional view on the line 8.8,'Fig. 7. i i i
  • the numeral 10 designates the writing head of a book or flat platen typewriting machine of the general type now commonly in use. This head is mounted for sliding reciprocatory movement on a pair of guide rails 11, whereby the head may trav-' erse the flat platen and-become positioned for operation oi the type on the material positioned thereon.
  • the present invention contemplates a flat platen 17, which platen is connected to the cross-bars 12 and 13 and suitably fastened thereto to be held in rigid position thereon.
  • At the edge portions of the platen 17 are located inwardly directed overhan ing flanges 18, spaced a suitable distance a ove the face of the platen to provide guide chan nels, and into said guide channels the work or material to be printed upon or stenciled is introduced.
  • a record card 19 such as commonly used in merchandising establishments, said card hav ing provision thereon for endorsement of transactions with the customer whose name is usually printed at the head of the card, as in the space 20.
  • This card also includes a stencil sheet 21, of the usual fibrous material employed for this purpose, and said sheet has cut therein the name and address of the customer so that the stencil sheet may be employed in the addressing of communications to the customer, and in other uses where the name and address of the customer is to be imprinted.
  • a stencil sheet 21 of the usual fibrous material employed for this purpose, and said sheet has cut therein the name and address of the customer so that the stencil sheet may be employed in the addressing of communications to the customer, and in other uses where the name and address of the customer is to be imprinted.
  • the presentinvention aims to provide means whereby the name of the customer, and his address, if desired, may be accurately printed at the head of the card 19, and likewise his name and address cut in the stencil sheet 21 at such point as to insure the same being located in the ⁇ area covered by the normal ink spot thereof when the card is placed in an imprinting machine or device. To this end provision must be made for properly positioning the card 19 on the platen 17.
  • the edges of the card 19 are inserted beneath the overhanging flanges 18, so as to .occupy the guide channels formed between the same and the platen, and to facilitate this introduction the forward ends of the flanges 18, or the ends which are nearest to the operator as the latter faces the machine, are cutaway or flared, as at 22, thus ⁇ permitting the card 19 to be easily passed into the space between the flanges 18.
  • the initial positioning of the card on the platen shall be accurately done, so that the printing space and the stencil sheet of the card may be ⁇ properly located with respect to the writing head 10 when the latter is moved to the printing and cutting positions which it cc oupies in effecting these operations.
  • the platen 17 has adjacent to its rear end a pair of upwardly extending studs 23, and the top end of the card 15) contacts these studs, and thus is limited in its movement when the card is introduced to the platen 17.
  • cushioning means may be provided within the platen 17, and against which the impact of the type may be effected during the cutting operation.
  • the platen 17 has a transversely extending countersunk depression 2 1, which lies in a plane below the upper surface of the platen.
  • a rectangular frame 25 is arranged over this depression 2 1, the top sun face of the frame 25 lying flush with the top surface of the platen 17, and through the frame 25 communication is established with the countersunk depression 24.
  • the frame 25 has an outwardly flared mouthpiece 26, and through said mouthpiece 26 may be introduced a cushion sheet 27, which may be of celluloid or other suitable material oi yielding characteristics.
  • the location of the depression 21 and the frame 25 which overlaps the same is such that when the card 19 is inserted be tween the flanges 18 and abuts the studs 23 the stencil sheet 21 will be positioned directly above the opening of the frame 25 and the cushion sheet 27. Therefore, as the type cut the stencil sheet 21 liability of damage to the type is eliminated, the yielding character of the sheet. 27 taking up the impact of the type and preventing such damage.
  • the present invention aims to provide means for accurately positioning the writing head 10 in relation to the material to be printed upon or stenciled without the necessity of the operator inspecting the area which receives the printmg or which is cut, and without laboriously searching for the proper point thereon for efiecti'ng the desired operations.
  • a stop block 28 At one end of which is located an'upwardly extending contact head 29.
  • the head 29 is in the path of movement of a connecting bar 30. which forms part of the machine frame or carriage of the writing head when the writing head 10 is moved in a direction away from the operator as the operator faces the mach ne.
  • the exact location of the stop block 28 is such that when the bar 30 contacts the head 29 the line of writing of the head 10 will be in the space 20 ot the card 19 as the latter occupies its position on the platen 17.
  • a stop dog 31 is mounted upon the frame of the head 10, which dog is pivoted in a slottedblock 32, as by a pin 33, or its equivalent.
  • This dog 31 is in the form of abell-crank lever, the longer Jarm having a linkBet connectedthereto.
  • the link 34 is also connected to a crank arm 35 car-' ried by the rock shaft 15, and by connections it is obvious that as the shaft 15 is rocked by the handle 16 to effect linear movement of thewriting head 10, as when,
  • the stopdeg 31 also will be rocked on its pivot 33, thereby elevating the shorter arm of, the do
  • the normal position, how-l ever, of the siorter arm ofthe dog 31 is such that when the carriage or frame. on
  • the flanges 18 serve toretain the edges of the card 19 in close relation to the platen 17, so that the card lies flatupon the platen, andthus is so related to the impactofthe typethat but minimum effort is required to effect the printing and cutting operations.
  • the studs 23 insure the initial positioning of the card with accuracy upon the platen 17, and the'stop block 28 inits co-actingrelation withthe cross-bar 30 and the stop dog- 31,enable the writing head 10 to be.
  • the last mentioned means including provision for varying its engaging relation to said stop. whereby to permit-variation ot' the stencilling position of the head with respect to the work, the operative relation of the last mentioned means to said stop being controlled by the linesspacing mechanism of the writing head.
  • the combination with the writing head or" a flat-platen typewriting machine, and the support on which said head is slidably mounted, of a platen associated with said support, a stop carried by said support to be contacted by the writing head in one direction of movement of the latter with respect to said support, whereby to limit movement of said head in such direction and locate the head in printing position with respect to the work supported by the platen, and a pivoted dogassociated with the writing head to engage said stop in the reverse direction of movement of the head to limit movement of the head in such reverse direction and locate the head in stencilling position with respect to the work.
  • the combination with the writing head of a flat-platen typewriting machine, and the support on which said head is slidably mounted, of a plat-en associated with said support a stop carried by said support to be contacted by the writing head in one direction of movement of the latter with respect to said support, whereby to limit movement of said head in such direction and locate the head in printing position with respect to the work supported by the platen, a pivoted dog associated with the writing head to engage said stop in the reverse direction of movement of the head to limit movement of the head in such reverse direction and locate the head in an initial stencilling position with respect to the work, and means for varying the engaging relation of the dog to said stop, whereby to permit variations of the stencilling position of the head with respect to the work, the operative relation of said dog to said stop being controlled by the line-spacing mechanism of the writing head.
  • a fiat platen having longitudinal guides, a writing machine continuously movable on said guides along said platen, either in forward or backward direction, said machine having a line spacing mechanism for moving itbackwards step by step, stop means for stopping the machine on a predetermined point in the forward movement to bring it to a first writing position over a predetermined portion of, the length of the platen, a second stop means for stopping continuous backward movement thereof in backward direction from said first position at a predetermined second writing position along said platen, means associated with said line spacing mechanism for causing further backward movement of said machine past said second writing position upon actuation of said line spacing mechanism, and a third stop means for arresting any further backward movement of said machine.
  • a flat platen have ing longitudinal guides, a writing machine continuously movable on said guides along said platen, either in forward or backward direction, said machine having a line spacing mechanism for moving it backwards step by step, stop means for stopping the machine 011 a predetermined point in the forward movement to bring it to a first writing position over a predetermined portion of the length of the platen, a second stop means for stopping continuous backward movement thereof in backward direction front said first position at a predetemined second writing position along said platen, means associated with said line spacing mechanism for causing further backward movement of said machine past said second writing position upon actuation of said line spacing mechanism, and a third stop means for arresting any further backward movement of said machine, said platen carrying a stopping member common to the first, sec- 0nd and third stopping means.

Description

Feb. 21, 192-8.
N. C. HEATON STENCIL CUTTING ATTACHMENT FOR TYPEWRITERS Filed'QQt, 20. 1923 2 Sheets-Sheet 1 lg 4% fl FN A, 2 m fl W E F W m W z E fl cwbnao, ILL.
. Feb. 21, 1028. 1,060,000
N, C. HEATON STENCIL CUTTING ATTACHMENT FOR TYPEWRITERS Filed Oct. 20. 1923 2 Sheets-Sheet 2 Patented Feb. 21, 1928.
UNITED STATEZSI -i NATHAN o. ,I-IEATON, or wnsrnonr, rriariro s, ASSIGNOB T0 MONTGOMERY wean a co, Inc, or CHICAGO, rumors, A conronnrron or rnnnvo s.
STENCIL-CUTTING ATTACHMENT ronr rrnwnlrnns.
Application filed October 20, 1923. Serial No. 689,650,-
3 The present invention has to do with type-- writing machines of the flat-platen type, and
contemplates an attachment therefor which;
maybe utilized for printing, as well as stem cil cutting. y 1
Book or flat-platen typewriting machines frequently are utilized for printing and stencil cutting in the: making of records.
accurately guiding and locating the head over the. platen and the material to be printed or cut. Loss of time results, and the surface printed or cut lacrs uniformity in its location of the matter recorded thereon.
Among the objects sought to be attained by the present invention is the provision of noveland efiectivemeans which enables the operator to position the Writinghead at' the proper points on the writing surface same substantially fiat on the platen, and
enablethe keys otthe writing head to be operated in the making of the record with a minimum degree of efiect, as well aswith a maximum degree of accuracy in the'move ment of the type towards and into contact with the material to be acted on.
Incidental to the foregoing, the invention also contemplates mechanism ofthe character referred to whereby the writing head, as
when a stencil sheetis to be cut, may be placed in definite and predetermined position over the platen so that fall of the type on to the stencil sheet willbe insured in the area covered by the normal ink spot made on the stencil sheet when the latter is placed in an imprinting machine or device. Accuracy of position oi the stenciled matter with respect tosuchink spotthus is attained, and the operator is not required to exercise any special care or skill in positioning the head for the cutting operation.
Other objects and advantages will become apparent as the nature of the improvements is better understood, the invention consisting substantially in the novel construction, combination and arrangementof partshereinaiter described, illustrated in the accom panying drawings, and finally pointed out: inthe appended claims.
The form of the invention herein set forth is intended to delineate a practical adaptation of the inventive concept, but the inven- .65 the disclosure thus made is to be taken in an tion is not limited to such embodiment, and
illustrative and not a restrictive sense.
In the drawings i I i Fig. 1 is a top plan View of the herein described attachment in its application to a flat-platen typewriting machine, the dotted lines illustrating one position of the'writing head occupied by the latter with respect to the attachment. i
Fig. 2 is an end elevation of the construction illustrated in F ig.' 1, a portion being in section, and the writing head being omitted.
Fig. 3 is a detail sectional View on the line 3-3, Fig. 1.
1 Fig. 4 is a similar view, Fig. 1.
Fig. 5 i is a face elevation and stencil sheet with respect to which the herein described invent-ion has particular utility.
Fig. 6 is a side elevation illustrating the attachment in its application to a fiat-platen of a record card typewriting machine, the head thereon being positioned as when adapted forprinting pur,
.poseso Fig. 7 is a similar view, the head of the typewriting machine being positioned as when adapted forstencil cutting purposes.
Fig. 8 is a detail sectional view on the line 8.8,'Fig. 7. i i i Referring now in detail to the accompany ing drawings, the numeral 10 designates the writing head of a book or flat platen typewriting machine of the general type now commonly in use. This head is mounted for sliding reciprocatory movement on a pair of guide rails 11, whereby the head may trav-' erse the flat platen and-become positioned for operation oi the type on the material positioned thereon. The usual construction of machines of this general character also ineludes a pair of transversely extending cross bars 12 and 13, which connect the guide rails i 11, and there is also included in the construction of the machine a sliding frame or carriage 14, part only of which is illustrated, on which the writing head 10 is mounted. The line-spacing mechanism is operated by a shift bar 15 to which is connected a handle 16, and to said handle 16 pressure is applied by the operator for actuating the line spacing mechanism, and thereby to move the writing head 10 over the platen.
The present invention contemplates a flat platen 17, which platen is connected to the cross-bars 12 and 13 and suitably fastened thereto to be held in rigid position thereon. At the edge portions of the platen 17 are located inwardly directed overhan ing flanges 18, spaced a suitable distance a ove the face of the platen to provide guide chan nels, and into said guide channels the work or material to be printed upon or stenciled is introduced. As illustrating one instance of such material, there is shown in Fig. 5 a record card 19, such as commonly used in merchandising establishments, said card hav ing provision thereon for endorsement of transactions with the customer whose name is usually printed at the head of the card, as in the space 20. This card also includes a stencil sheet 21, of the usual fibrous material employed for this purpose, and said sheet has cut therein the name and address of the customer so that the stencil sheet may be employed in the addressing of communications to the customer, and in other uses where the name and address of the customer is to be imprinted. This use of records of this nature is well known and need not be further dwelt upon.
It has been stated that the presentinvention aims to provide means whereby the name of the customer, and his address, if desired, may be accurately printed at the head of the card 19, and likewise his name and address cut in the stencil sheet 21 at such point as to insure the same being located in the {area covered by the normal ink spot thereof when the card is placed in an imprinting machine or device. To this end provision must be made for properly positioning the card 19 on the platen 17. When introduced to the platen the edges of the card 19 are inserted beneath the overhanging flanges 18, so as to .occupy the guide channels formed between the same and the platen, and to facilitate this introduction the forward ends of the flanges 18, or the ends which are nearest to the operator as the latter faces the machine, are cutaway or flared, as at 22, thus {permitting the card 19 to be easily passed into the space between the flanges 18. It 'js essential, however, that the initial positioning of the card on the platen shall be accurately done, so that the printing space and the stencil sheet of the card may be {properly located with respect to the writing head 10 when the latter is moved to the printing and cutting positions which it cc oupies in effecting these operations. For such purpose the platen 17 has adjacent to its rear end a pair of upwardly extending studs 23, and the top end of the card 15) contacts these studs, and thus is limited in its movement when the card is introduced to the platen 17.
In order to prevent injury to the type of the writing head 10 in the stencil cutting operation, it is desirable that cushioning means may be provided within the platen 17, and against which the impact of the type may be effected during the cutting operation. For this purpose the platen 17 has a transversely extending countersunk depression 2 1, which lies in a plane below the upper surface of the platen. A rectangular frame 25 is arranged over this depression 2 1, the top sun face of the frame 25 lying flush with the top surface of the platen 17, and through the frame 25 communication is established with the countersunk depression 24. The frame 25 has an outwardly flared mouthpiece 26, and through said mouthpiece 26 may be introduced a cushion sheet 27, which may be of celluloid or other suitable material oi yielding characteristics. thereby to provide a cushion for the impact of the type of the writing head 10. The location of the depression 21 and the frame 25 which overlaps the same is such that when the card 19 is inserted be tween the flanges 18 and abuts the studs 23 the stencil sheet 21 will be positioned directly above the opening of the frame 25 and the cushion sheet 27. Therefore, as the type cut the stencil sheet 21 liability of damage to the type is eliminated, the yielding character of the sheet. 27 taking up the impact of the type and preventing such damage.
It has also been stated that the present invention aims to provide means for accurately positioning the writing head 10 in relation to the material to be printed upon or stenciled without the necessity of the operator inspecting the area which receives the printmg or which is cut, and without laboriously searching for the proper point thereon for efiecti'ng the desired operations. To such end there is mounted on one of the guide rails 11 a stop block 28 at one end of which is located an'upwardly extending contact head 29. The head 29 is in the path of movement of a connecting bar 30. which forms part of the machine frame or carriage of the writing head when the writing head 10 is moved in a direction away from the operator as the operator faces the mach ne. The exact location of the stop block 28 is such that when the bar 30 contacts the head 29 the line of writing of the head 10 will be in the space 20 ot the card 19 as the latter occupies its position on the platen 17.
Therefore. after the operator has placed the card 19 on the platen 17 in abutting relation to the studs 23, the simple movement by the lltl ,lii
29, will position the writinghead 10 in relation to the card so that the name of the'customer-may be written or typed upon the head of the card.
F or eil'ecting similar positioning of the head 10 with respect to the stencilfsheet 21 to enable the latter to be cut by the type of the head a stop dog 31 is mounted upon the frame of the head 10, which dog is pivoted in a slottedblock 32, as by a pin 33, or its equivalent. This dog 31 is in the form of abell-crank lever, the longer Jarm having a linkBet connectedthereto. The link 34 is also connected to a crank arm 35 car-' ried by the rock shaft 15, and by connections it is obvious that as the shaft 15 is rocked by the handle 16 to effect linear movement of thewriting head 10, as when,
spacing, the stopdeg 31 also will be rocked on its pivot 33, thereby elevating the shorter arm of, the do The normal position, how-l ever, of the siorter arm ofthe dog 31 is such that when the carriage or frame. on
which the head.10 is mounted is moved to ward the operator, the shorter arm of the a dog 31 willicontact the stop block 28, and.
thus bring the carriage to rest. In such position the linefof writing, or the line of impact of thetype of the head 10, will be within the stencil sheet 21, and in the area covered by the normal ink spot of the sheet when the card 19 is placed in the print ofthe stenciled matter will occurs at theimprinting operation At the time that the carriage thus isbrought to rest by con 1 tact of the stop dog with theistop block 28,
the head 10 is positioned for cutting the first line in thestencil sheet. Foricutting the next succeedingline or lines, it is but necessary to depress the handle 16 of the =line-shiftingmechanism, and in the initial movement oi such depression the nose of the dog 31 is elevated suificiently high to clear the end of the stop block 28, and on the con tinued depression ofthe handle 16 so as to move the writing head 10the'distance of one line space, the nose of the dog 31 entirely clears the block 28; VVhenthus positioned the second linemaybe cutin the stencil sheet, and if furtherlines are to be cut the writing head 10 is free to move to the new 17051130115101 such cuttlng by additional successive depressions of the handle 16 for the spacing movement of the head. If these additional lines be of sufficient number, the
nose of. the dog 31 ultimately will contact,
these i riage 10 to rest whensuch contact occurs, but at such-time the line- 'of impact of the type of the writing head 10 still will be within-the stencil sheet 21 and in the area covered bythe normal ink spot. This insures that all the matter cutin the stencil sheet will be embraced by the application of the ink when the stencil is positioned in the imprinting machine or device.
From the foregoing description it is be lieved unnecessary further to set forth the operation of the mechanism, it being clearly apparent from such description. It is to be observed, however, that the flanges 18 serve toretain the edges of the card 19 in close relation to the platen 17, so that the card lies flatupon the platen, andthus is so related to the impactofthe typethat but minimum effort is required to effect the printing and cutting operations. The studs 23 insure the initial positioning of the card with accuracy upon the platen 17, and the'stop block 28 inits co-actingrelation withthe cross-bar 30 and the stop dog- 31,enable the writing head 10 to be. positioned accurately relatively to the space of the card on which the printing-is to ,beeffected, as well as with tespectto thestencil sheet which also is to be cut, so that the writing mechanism be-, comes 13081 61611661. 1n definite and predetermined location over the platen, which will permit the type to fall in the desired area on the surface to be printed upon or cut.
I claim: r i v i 1. In an attachment ofthe class described, the combination with the writing head of a fiat-platen typewritingmachine of a platen arrangedin a plane below said writing head, guideflanges associated with said platen for guiding the surface to be acted on by the Writing head to initial position in its introduction to the platen, the latter being provided, with a countersunk depression extending transversely and adapted to slidably receive a cushioningelement, a cushioning element located in said countersunk depression forcushioning the impact of the type of the writing head, and means with which said head co-operates to arrest its movement over; said platen and position the head so that its line of writing will occupy a predetermined position with respect to the surface to be written upon.
1 2. Inan attachment of the class described, the combination withthe writing head of a fiat-platen typewriting machine, and the support on which said head is slidably mounted, of a platen associated with said support, a stop carried by said support to be contacted by the writing head in one direction of head in such direction and locate the head in printing position with respect to the work with the head 29, and thus bring the car-i supported by thep'lat'en, and means associated with the writing head to engage such stop in reverse direction of movement of the head to limit movement of the head in such reverse direction and locate the head in stencilling position with respect to the work.
3. In an attachment of the class described, the combination with the writing head of a flat-platen typewriting machine, and the support on which said head is slidably mounted, of a platen associated with said support, a stop carried by said support to be contacted by the writing head in one direction of movement of the latter with respect to said support, whereby to limit movement of said head in such direction and locate the head in printing position with respect to the work supported by the platen, and means associated with the writing head to engage said stop in the reverse direction of movement of the head to limit movement of the head in such reverse direction and locate the head in an initial stencilling position with respect to the work, the last mentioned means including provision for varying its engaging relation to said stop. where by to permit variation of the stencilling po sition of the head with respect to the work.
i. In an attachment of the class described, the combination with the writing head of a flat-platen typewriting machine, and the support on which said head is slidably mounted, of a platen associated with said support, a stop carried by said support to be contacted by the Writing head in one direction of movement of the latter with respect to said support. whereby to limitmovement of said head in such direction and locate the head in printing position with respect to the work supported by the platen, andimeans associated with the writing head to engage said stop in reverse direction of movement of the head to limit movement of the head in such reverse direction and locate the head in stencilling osition with respect to the work, the operative relation of the last mentioned means to said stop being con- 7 trolled by the line-spacing mechanism at the of said head in such direction and locate the head in printing position with respect to the work supported by the platen. and means associated with the writing head to engage said stop in thereverse direction of movement'of the head to limitmovement of the head in such reverse direction and locate the head in an initial stencillin-g position with respect to the work, the last mentioned means including provision for varying its engaging relation to said stop. whereby to permit-variation ot' the stencilling position of the head with respect to the work, the operative relation of the last mentioned means to said stop being controlled by the linesspacing mechanism of the writing head.
6. In an attachment of the class described, the combination with the writing head or": a flat-platen typewriting machine, and the support on which said head is slidably mounted, of a platen associated with said support, a stop carried by said support to be contacted by the writing head in one direction of movement of the latter with respect to said support, whereby to limit movement of said head in such direction and locate the head in printing position with respect to the work supported by the platen, and a pivoted dogassociated with the writing head to engage said stop in the reverse direction of movement of the head to limit movement of the head in such reverse direction and locate the head in stencilling position with respect to the work.
7. In an attachment of the class described, the combination with the writing head of a flat-platen typewriting machine. and the support on which said head is slidably mounted, of a platen associated with said support,'a stop carried by said support to be contacted by the writing head in one direction of movement of the latter with respect to said support, whereby to limit movement of said head in such direction and locate the head in printing position with respect to the work supported by the platen. a pivoted dog associated. with the writing head to engage said stop in the reverse direction Off movement of the head to limit movement of the head in such reverse direction and locate the head in an initial stencilling position with respect to the work, and means for varying the engaging relation of the dog to said stop, whereby to permit variations of the stencilling position of the head with respect to the work.
8. In an attachment of the class described, the combination with the writing head of a flatplaten typewriting machine, and the support on which said head is slidably mounted, of a platen associated with said support,a stop carried by said support to be contacted by the writing head in one direction of movement of the latter with respect to said support, whereby to limit movement of said head in such direction and locate the head in printing position with respect to the work supported by the platen, and a pivoted dog associated with the writing head to engage said stop in the reverse direction of movement of the head to limit movement of the head in such reverse direction and locate the head in stencilling position with respect to the work, the operative relation of said dog to said stop being controlled by the line-spacing mechanism of the writing head.
9. In an attachment of the class described, the combination with the writing head of a flat-platen typewriting machine, and the support on which said head is slidably mounted, of a plat-en associated with said support, a stop carried by said support to be contacted by the writing head in one direction of movement of the latter with respect to said support, whereby to limit movement of said head in such direction and locate the head in printing position with respect to the work supported by the platen, a pivoted dog associated with the writing head to engage said stop in the reverse direction of movement of the head to limit movement of the head in such reverse direction and locate the head in an initial stencilling position with respect to the work, and means for varying the engaging relation of the dog to said stop, whereby to permit variations of the stencilling position of the head with respect to the work, the operative relation of said dog to said stop being controlled by the line-spacing mechanism of the writing head.
10. In an attachment of the class described, the combination with the writing head of a flat-platen typewriting machine, and the support on which said head is slidably mounted, of a platen associated with said support, a stop block carried by said support and provided with an upwardly extending contact head, said stop block being contacted by the writing head in one direction ofmovement of the latter with re spect to said support whereby to limit movement of the head in such direction and locate the head in printing position with respect to the work supported by the platen, a pivoted dog associated with the writing head to engage the end of said stop block in the reverse direction of movement of the head to limit movement of the head in such reverse direction and locate the head in an initial stencilling position with respect to the work, and means for varying the position of engagement of the dog to said stop block, whereby to clear the dog from engagement with the end of said stop block and position the dog for engagement with the contact head of the stop block to limit the stencilling position of the writing head with respect to the work.
11. In an attachment of the class described, the combination witha writing head of a fiat platen typewriting machine, of a platen arranged in a plane beneath the said writing head, a stop on said platen, said stop comprising two blocks one of which directly engages the writing head, a dog carried by said writing head and operatively associated with a line spacing mechanism of said head for engagei'nent with one of said stop blocks to arrest the movement of said writing head, said dog being releasable from said stop block by the ope 'ation of said line spacing mechanism and being subsequently engageable With the second stop block upon continued operation of said line spacing mechanism.
12. The combination of a fiat platen hav ing longitudinal guides, a writing machine continuously movable on said guides along said platen, either in forward or backward direction, said machine having a line spacing mechanism for moving itbackwards step by step, stop means for stopping the machine on a predetermined point in the forward movement to bring it to a first writing position over a predetermined portion of, the length of the platen, a second stop means for stopping continuous backward movement thereof in backward direction from said first position at a predetermined second writing position along said platen, means associated with said line spacing mechanism for causing further backward movement of said machine past said second writing position upon actuation of said line spacing mechanism, and a third stop means for arresting any further backward movement of said machine.
13. The combination of a flat platen have ing longitudinal guides, a writing machine continuously movable on said guides along said platen, either in forward or backward direction, said machine having a line spacing mechanism for moving it backwards step by step, stop means for stopping the machine 011 a predetermined point in the forward movement to bring it to a first writing position over a predetermined portion of the length of the platen, a second stop means for stopping continuous backward movement thereof in backward direction front said first position at a predetemined second writing position along said platen, means associated with said line spacing mechanism for causing further backward movement of said machine past said second writing position upon actuation of said line spacing mechanism, and a third stop means for arresting any further backward movement of said machine, said platen carrying a stopping member common to the first, sec- 0nd and third stopping means.
In testimony whereof I have hereunto signed my name.
NATHAN O. HEATON.
CERTEEMA'EE @QRREGHQN.
Patent No. 1,669,008. Gmntcad February 2L 1928, to
NATHAN G, MIQN It is hereby certified that Qiflil agzipeaifs iii fize prim-ad spaciiimtim M the above numbzered mien? requiring cmfmmimn as ifaiows; Page L Hue 3i; for the Word "e ffem" read "Mimi"; and that flare said Matters Pamm should be read with this cmremion therein im we same may mnflnm w Um meord of the case in the Patem: @Efice.
Signed and sealed this 2% day m March A. D F928,
M, 3, Meme,
Seal. Acting @wmmissimw 1)? Patents,
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