US1632362A

US1632362A - Manifolding attachment poe typewriters

Info

Publication number: US1632362A
Authority: US
Publication date: 1927-06-14
Anticipated expiration: 1944-06-14

Description

' 1,632,362 June H. MOL. ARMISTEAD v MANIFOLDING ATTACHMENT FOR TYPEWRITERS Filed May 20, 1925 2 Sheets-Sheep l ATTORNEYS.

H i Y H, M l A M E D MA FQLDINCi ATTACHMENT FOR TYPEWRITBRS' Filed May 20, 1925 2 Sheets-Sheet 2 ATTORNEYS.

Patented dune l i, lQEZ.

HUBERT MGLEAN AEMISTEAD, OF SAIL? ERAECISOQ, CthLIFC-RN'IA, ASSIGNOR TO MANI- FOLD IMPRESSIONS CORPORATION, OF CARSON CITY, NEVADA, A CORPORATION OF NEVADA.

IVIANIFOLDING ATTACHMENT FOR TYPEWRITERS Application filed May 20, 1925. Serial No. 31,525.

My invention relates to that class of typewriters and like type-impression machines with which are associated manitolding a"- tachments, employing ribbon-bearing arms, movable in such wise as to carry the manit'olding ribbon or ribbons into and out of functional position in the line of type impact.

This movement of the ribbons is in an arcuate path so closely related to the path of the paper ad ancing from the. line of type impact, that unless prevent've means are provided, the paper is likely to come in contact with the ribbons when the latter are out of use in their thrown-back or elevated position; and as it is customary for the ribbons to have a vibration or oscillation even when in this position, they may tend to blur the paper.

One of the objects of my invention is to provide a novel guard of a character and form to furnish not only a means for separatingthe advancing typed paper from the mani'folding ribbons when the latter are out of use, but also to serve a tablet upon which erasures. on the paper may be conveniently made.

Another object of my invention lies in positioning said guard with relation to the platen in such wise that it still l aves an adequate portion of the platen itselt clear to serve as a surface against which erasures maybe made, so that said guard in its function as an erasing support is supplemental to the erasing support function of the platen, it being possible to maize erasures upon either or both the guard and the platen.

in machines of this nature, there are also paper guide fingers, the roller ends of which hold the paper to the platen. These fingers when in functioning position lie in the path of movement oi the manifolding ribbons, and unless means be provided to timely remove them from such path they would intercept the ribbons.

Accordingly, another object of my inven tion is to provide novel means timely operating with the ribbon operating means for moving such paper guide fingers out of the path of the ribbons.

Another object of my invention is to provide means for moving the paper guard out of the path of the ribbons and to so associate said means with the means for controlling the paper guide fingers, that both guard and lingers are timely operated with the movement of the ribbons.

The return of both paper guard and guide fingers may be efitected manually, or, if desired, automatically, and, therefore, in the lattercase, another object 01" my invention is to provide means to this end.

The nature of my improvements and the manner in which they attain the several objects sought will be fully ascertained from the following specification, reference being made to the accompanying drawings, in which Fig. 1 is a front elevation, broken, of a platen showing the application thereto of my improvements.

Fig. 2 is an end View of the platen with its turning knob and the ribbons and ribbon a ms omitted, showing my improvements arranger. for the manual return of the paper guard and guide fingers.

Fig. 3 is a similar end view showing the arrangement for the automatic return of said guard and fingers.

It will be of advantage at the outset, to state that my invention is closely related to the manifolding platen of Patent No. 1,502.178, July 22, 1924, Serial Number 664,814, filed September 26, 1923, which discloses swinging arms, carrying manifolding ribbons, paper guide fingers for holding the paper to the platen, and guide plates for proteeting the uprising paper from the ribbons when elevated, together with means operating in time with the movement or" the ribbons r'or moving both paper guide fingers and guide plates out of the path of the ribbons. Reference may, if desired, be had to said patent and particularly to Figs. 3, 13 and 15 of the drawings thereof, in order not only to supplement the distinctions which I shall make herein between my improvements and those of said patent, but also to avoid unnecessary prolixity in description and drawings particularly with relation to the arm operating means which in detail form no part of my invention, and are in fact substantially the same as in said patent.

The paper fingers in said patent depend from a support above the platen, and are carried by the same rocking bar which carries the ribbon guard plates, so that both fin ers and plates may be operated by the roe ing of said bar.

But when the paper fin ers are carried by abar located in front 0 the platen below the line of type impact, as in many machines, it is apparent that in order to operate both the fingers and the 'uard member special means must be provided. To such means one feature of my invention is directed.

Again, in the patent referred to, the guard plates are relatively narrow strips. Another feature of my invention is to make the guard member in the shape or form of a com lete apron or shield so that it may, in ad it-ion to its function as a guard, be used as a tablet on which erasures may be conveniently made.

With the foregoing explanations in view the drawings may now be described.

1 is the platen carriage, in which is mounted by means of the shaft 2, the platen 3. A turning knob 4 is shown on one end of the shaft. In Fig. 1, 5 indicates a casing associated with the platen, ateach end. In these casings are housed the operating mechanism for the arms which carry the manifolding ribbons, said arms which are indicated by 6, playing in peripheral slots 7 of ,the easings, their outer extremities carrying the manifolding ribbons 8. There are three such ribbons here shown, one of which has been carried down to functional position in the line of type impact, the others remaining elevated. As the means for thus moving'the arms and ribbons form no part of my invention, and as such means are in practise those of the patent referred to, I have not herein shown them, deeming it sufficient to say that they are actuated by the independent rotary .movement of the sleeve 9 carried on the platen shaft 2, and moved by the knob 10, such showing of the sleeve and its knob serving the further necessary purpose in connection with the operating means of the paper fingers and the protecting shield, which form my invention herein.

Rising from each end of the platen carriage 1, are the standards 11 between the upper extremities of which is carried a rock shaft 12. Upon this shaft 12 is fixed the ribbon shield 13, said shield being in the form of a continuous uniformly smooth surfaced plate or apron extending down to the platen for the full length of the latter, as shown in Fig. 1.

When the manifolding ribbons 8 are in elevated position they lie behind the shield 13, as seen in Fig. 1, and therefore the uprising paper, guided by the shield, as it leaves the platen, passes outside and upon the shield wholly free from contact with the ribbons. The shield by being made in the form of a complete apron extending the length of the platen, instead of, as heretofore being in the form of relatively narrow strips or plates, may be usedas a tablet upon which to conveniently make erasures upon the paper lying upon it. It will also be noted that the shield is so disposed that it leaves a sufficient surface of the platen clear and exposed to serve as an erasure support, so that either the platen surface or the shield surface or both may be used for erasures.

For a further protection of the ribbons when in elevated position, I pivotally hang from the rock shaft .12, a guard plate 14 which prevents any accidental contact with said ribbons of the paper when being entered at the back of the platen.

Mounted in the platen carriage 1 in front of the platen and below its line of type impact is a rock shaft 15, upon which are mounted the paper fingers 16 which extend upwardly in front of the platen and carr in their upper ends the presser rolls 17 whic bear upon the paper above the impact line.

There are as usual two of these fingers and they are mounted on the shaft in such wise that they may be moved independently along the sahft, and will also rock therewith.

As both the shield 13 and the presser rolls 17 of the lingers 16 lie, when in functional position, close to the platen. they are in the path of movement of the ribbons as the latter (lQSCGHll to functional position and as they rise to a position out of use. Means must, therefore, be provided to lift them out of said ribbon path to allow the ribbons to pass, and to return them again when the ribbons have passed. These means are best tied up to the ribbon-arm operating means, so that a single movement will timely effect the complete operation, and said means may be wholly or partially automatic, as I shall now describe.

Referring particularly to Fig. 2, there is pivoted at 18 to one of the standards 11 a bell crank lever, which is shown as comprising two arms, the lower arm being designated by 19 and the upper arm by 20. The upper end of the arm 20 is pivoted at 21 to the end of a crank 22 fixed on the rock shaft 12 of the ribbon shield 13. A spring 23 extending between the

centers

18 and 21 is adapted by throwing past center to hold the shield up or down as the case may be.

Upon the sleeve 9 which, as heretofore stated, is the prime mover for operating the ribbon arms is a cam 2-1 which acts upon the lower end of the bell crank. lower arm 19, and thus effects the lifting of the shield 13 from the path of the ribbons, the cam being so timed as to effect the lifting in advance of the down-moving or of the retiring ribbon. In this case, because of the designated position of the controlling spring 23 and the delineated shape of the cam, the return of the shield after the ribbon has passed, is effected manually, by simply springing it down unother end of the spring being attached at the point 29 to the platen carriage. This spring by throwing past center is adapted to hold the paper fingers either to or from the platen, andi as in the case of the ribbon shield, the cam effects the lifting of the paper-fingers, while the return of said lingers is effected by slight manual pressure. If it be desired, however, to have both the lifting and return of the shield and the fingers wholly automatic upon the movement of the sleeve 9, it is only necessary to change the points of attachments of the respective springs 23 and 28., and to substitute a cam of proper shape. This I show in Fig. 3. In this form there is a spring 30 which connects the lower arm 19 of the bell-crank which controls the movement of the ribbon shield with the standard 11, said spring thus normally holding the shield down.

Similarly there is a spring 31 connecting the arm 25 which controls the movement of the pap-er fingers with a fixed point 32, so that said fingers are normally held to the platen. A cam 33 of proper shape is then supplied on the sleeve 9 which will effect the lifting of the shield and the fingers and V will allow their return automatically. The controlling

springs

23 and 28 thus yieldingly lock the shield and the paper fingers at both extremes of their movement.

I claim 1. In a manifolding device for typewriters, the combination of a manifolding member associated with the platen-carriage of the machine. and adapted to be depressed to functional position in the line of typeimpact and to be elevated therefrom; and a shield plate mounted on the platen-carriage and overlying approximately the full length of the platen above the elevated position of the manifolding member, and adapted. to deflect the uprising paper from the platen and separate it from said elevated manifolding member.

2. In a manifolding device for typewriters ,.the combination of swinging arms associated with the platen-carriage of the machine; a manifolding member carried by said arms and adapted to be depressed to functional position in the line of type impact and to be elevated therefrom; a rotatable member for operating said arms; a shield plate mounted on said platen-carriage overlying approxin'iatcly the full length of the platen above the elevated position of the manifolding member, the forward edge of said plate lying close to the platen, to

deflect the uprising paper from said platen and separate it from said elevated manifold ing member; and means actuated by the rotatable arm-operating member for adjusting the forward edge of said shield plate relativelyto the platen surface in timely relation to the travel of the manifolding memher.

3. In manifolding device for typewrit ers, the combination of swinging arms associated with the platen-carriage of the machine; a manifolding member carried by said arms and adapted to be depressed to functional position in the line of type impact and to be elevated therefrom; a rotatable member for operating said arms; a shield plate mounted on said platen-carriage overlying the length of the platen above the elevated position of the manifolding men1- her, the forward edge of said plate lying close to the platen, to deflect the uprising paper from said platen and separate it from said elevated manifolding member; and means actuated by the rotatable arm-operating member for adjustin the forward edge of said shield plate relatively to the platen surface in timely relation to the travel of the manifolding member, said means coniprising a rocking bar mounted on the platen carriage and upon which said shield plate is carried, a cam on the rotatable arm-operating member, and motion-transmitting devices between said cam and said rocking bar.

at. In a manifolding device for typewrlt ers, the combination of swinging arms mounted on the platen-carriage of the machine; a manifoldin member carried by said arms and adapter to be moved into and out of functional position in the line of type impact; a rotatable member for operating said arms; paper guide fingers on the platen carriage lying normally in the path of the manifolding member; a rocking bar upon which said fingers are carried, adapted to vary the relation of the fingers with respect to the platen surface; a cam on the rotatable arm-operating member; and motion-transmitting devices between said cam and said rocking bar, adapted to move said fingers to and from the platen in timely relation to the travel of the manifolding member.

5. In a manifolding device for typewriters the combination of swinging arms mounted on the platen-carriage of the, machine; a' rotatable member for operating said arms; a manifolding member carried by said arms and adapted to be depressed to functional position in the line of type impact and to be elevated therefrom; a shield plate m 'erlying the platen above the elevated position of the manifolding member the forward edge of said shield plate lying close to the platen and adapted to defiect the uprising paper from the platen and separate it from said elevated manifolding memill) her; paper guide fingers rising from the platen-carriage below the platen and crossing the line of type impact, the extremities of said fingers normally bearing on the platen above said line; and means actuated by said rotatable arm-operating member for adjusting the forward edge of the shield plate, and for adjusting said paper guidefingers. relatively to the platen surface, in timely relation to the travel of the manifolding member.

6. In a manifolding device for typewriters the combination of swinging arms mounted on the platen-carriage of the machine; a rotatable member for operating said arms; a manifolding member carried by said arms and adapted to be depressed to functionalv position in the line of type impact and to be elevated therefrom; a shield plate overlying the platen above the elevated position of the manifolding member, the forward edge of said shield plate lying close to the platen and adapted to deflect the uprising paper from the platen and separate it from said elevated manifolding member: paper guide fingers rising from the platencarriage below the platen and crossing the line of type impact, the extremities of said fingers normally bearing on the platen above said line; and means actuated by said rotatable arm-operating member for adjusting the forward edge of the shield plate, and for adjusting said paper guide fingers, relatively to the platen surface, in timely relation to the travel of the manifolding member. said means comprising a rocking bar upon which the shield plate is carried; a separate rocking bar on which the paper guide fingers are carried; a cam on said rotatable arm-operating member; and separate motion transmitting devices between said cam and said rocking bars res ectively.

7. In a manifolding device or typewriters the combination of swinging arms mounted on the platen-carriage of the machine; a rotatable member for operating said arms; a manifolding member carried by said arms and adapted to be depressed to functional position in the line of type impactand to be elevated therefrom; a shield plate overlying the platen above the elevated position of the manifolding member, the forward edge of said shield plate lying close to the platen and adapted to deflect the uprising paper from the platen and separate it from said elevated manifolding member; paper guide fingers rising from the platencarriage below the platen and crossing the line of type impact, the extremities of said fingers normally bearing on the platen above said line; and means actuated by said rotatable arm-operating member for adjusting the forward edge of the shield plate, and for adjusting said paper guide fingers, relatively to the platen surface, in timely relation to the travel of the manifolding member, said means com rising a rocking bar upon which the shied plate is carried; a separate rocking bar on which the paper guide fingers are carried; a cam on said rotatable arm-operating member; and separate motion transmittingdevices between said cam and said rocking bars respectively, said devices including spring members adapted for variable positioning to render the adjustment of the shield plate and the fingersiautomatic in whole or in part at will.

8. In a manifolding device for tipswriters, the combination of a manifol mg member associated with the platen-carriage of the machine and adapted to be depressed to functional position in the line of t pe impact and to be elevated therefrom; a ar mounted on the platen carriage above and back of the platen; a shield plate carriedby said bar and overlying the elevated osition of the manifolding member, With Its forward edge lying close to the platen to separate the uprising paper from said manifolding member; and a guard plate depending from said bar and closing in the back of the space formed by said overlying shield plate.

9. In typewriters and like type-impression devices having a platen, a record-sheet deflecting-member adapted for movement to and from functional association with said platen; a movable manifolding member associted with the platen; and means for automatically moving said deflecting member both to and from its functional position upon the movement of the manifolding member and in timely relation thereto.

10. In typewriters and like type-impression devices having a platen, theicombination of a paper guide adapted for movement to and from functional association with said platen; a record'sheet deflecting member adapted for movement. to and from functional association with said platen; a movable Inanifolding member associated with the platen; and means for automatically moving said paper guide and said deflecting member both to and from their positions upon' the movement of the manifolding member and in timely relation thereto.

11. In typewriters and like type-impression devices having a platen, the combination of a paper guide adapted for movement to and from functional association with said platen; a record-sheet deflecting member adapted for movement to and from functional association with said platen; a movable manifolding member associated with the platen; means for automatically moving said paper guide and said deflecting member both to and from their positions upon the movement of the manifolding member and in timely relation thereto; and means for locking said paper guide and said deflecting member at both extremities of their movement.

12. In typewriters and like type-impression devices the combination of a platencarriage; a platen carried thereby; a recordsheet deflecting plate mounted on the platencarriage and overlying approximately the full length of the platen with its forward edge lying close to the platen along a line beyond and parallel with the line of typeimpact; a rocking bar mounted on the platen carriage and upon which the deflecting plate is carried, said bar being adapted to move the forward edge of the plate to and from the platen; an operating member rotatable about the axis of the platen; and

means actuated by said member for locking said bar.

18. In typewriters and like type-impression devices the combination of a platencarriage; a platen carried thereby; a recordsheet deflecting plate mounted on the platen carriage and overlying approximately the full length of the platen with its forward edge lying close to the platen along a line eyond and parallel with the line of typeimpact; a rocking bar mounted on the platen carriage and upon which the deflecting plate is carried, said bar being adapted to move.

the forward edge of the plate to and from the platen; an operating member rotatable about the axis of the platen; a cam on said member; motion-transmitting members between said cam and said rocking bar; and

a spring applied to said transmitting memsion devices, the combination of a platencarriage; a platen carried thereby; a recordsheet deflecting plate mounted on the platen carriage and overlying approximately the full length of the platen with its forward edge lying close to the platen along a line beyond and parallel with the line of type impact; a rocking member mounted on the platen carriage and upon which the deflecting plate is carried, said member being adapted to move the forward edge of the plate to and from the platen; paper guide fingers rising from the platen-carriage below the platen and crossing the line of type impact, the extremities of said fingers normally bearing on the platen above said line; a second rocking member mounted on the platen-carriage and carrying said fingers; an operating member rotatable about the axis of the platen; and means actuated by said operating member for oscillating said rocking members in unison.

15. In typewriters and like type-impression devices, the combination of a platencarriage; a platen carried thereby; a recordsheet deflecting plate mounted on the platen carriage and overlying approximately the full length of the platen with its forward edge lying close to the platen along a line beyond and parallel with the line of type impact; a rocking member mounted on the platen carriage and upon which the deflecting plate is carried, said member being adapted to move the forward edge of the plate to and from the platen; paper guide fingers rising from the platen-carriage below the platen and crossing the line of type impact, the extremities of said fingers normally bearing on the platen above said line; a second rocking member mounted on the platen-carriage and carrying said fingers; an operating member rotatable about the axis of the platen; and means actuated by said operating member'for oscillating said rocking members in unison, said means comprising a cam on said operating member; separate levers actuated by said cam and adapted to oscillate the two rocking members respectively; and separate springs applied respectively to said levers and disposed to throw past centers to resiliently hold said rocking members at the limits of oscillation.

In testimony whereof I have signed my name to this specification.

HUBERT MoLEAN ARMISTEAD.