US1270979A - Platen and pressure-roll feeding means. - Google Patents

Description

A. A. SCHWARTZ.

PLATEN AND PRESSURE ROLL FEEDING MEANS. APPucmoN mu) can u um.

1 ,270,979. Patented July 2, 1918 3 SHEETS-SHEEI L A. A. SCHWARTZ.

PLATEN AND PRESSURE ROLL FEEDING MEANS.

APPLICATION FILED my 11. 1911.

1 ,270,979. Patented July :2, 1918.

A. A. SCHWARTZ.

PLATEN AND PRiSSURE ROLL FEEDING MEANS.

APPLlCATiOH man MAY :1. 19w.

1 ,270,979. Patented July 2, 1918.

3 SHEETS-SHEET 3.

51 nuewtoz fiber} 1 :bwariz as, A; attoweq UNITED STATES PATENT OFFICE.

ALBERT A. SCHWARTZ, OF NEW YORK, N. Y., ASSIGNOR 'IO ROYAL TYPEWRITER OOIIIPANY, INQ, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

PLATEN AND PRESSUlRE-ROLL FEEDING MEANS.

specification of Letters Patent.

Patented July 2, 1918.

Application filed May 11, 1917. BeriaiNc. 167,869.

To all whom it may concern:

Be it known that I, Annunr A. SCHWARTZ, a citizen of the United States, and a resident of the borough of Bronx, in the city of New York, county of Bronx, and State of New York, have invented certain new and useful IH'IPIOVGIDGIHJS in Platens and Pressure-Roll Feeding cans, of which the following is a specification.

The present invention relates generally to typewriting machines and has more particularly reference to pressure feed means associated with the platen.

In an application Serial No. 16764.1 filed by E. B. Hess on the tenth da of May, 1917, there is disclosed a portion 0 a typewriting machine of the front-strike type in which there is lower pressure feed means engaging the platen below the line of print, and an overhead pressure roll for engaging the platen above the line of print, with suitable releasing means for both the lower and overhead pressure feed means, and an actuating member for operating both releasing means. In that application the parts are so arranged that the usual rock lever, which is utilized to actuate the releasing means for the lower pressure feed means, is provided with a pin or extension which rides under a cam member conveniently formed on one of the arms supporting the overhead pressure roll pivotally. The relation of these parts is such that the initial movement of the rock lever serves to raise the ove head pressure roll into an elevated sustained paper guiding position but of contact with the platen, and the subsequent movement of the rock lever serves to operate the releasing means for the lower pressure feed means. Means are further provided for withdrawing the pin or projection carried by the rock lever from its active cam engaging position so that the movement of the rock lever may act only to operate the releasing means for the lower pressure feed means without elevating the overhead pressure roll. If, however, the pin or projection has been withdrawn so as not to lift the overhead pressure roll, and the rock leverhas been moved a suflicient distance to operate the lower pressure feed means, it is not possible to thereafter elevate the overhead pressure roll into a sustained paper guiding position out of contact with the platen Wlill'lOLll] first bringing the lower pressure feed means again in contact with the platen. It will be noted, however, that in the construction disclosed in said application, the overhead pressure roll can be lifted manually at all times to its idle position.

Under certain conditions, it is advantageous to be able to first release the lower pressure feed means and then thereafter to lift the overhead pressure roll into its sustained paper guiding position above the platen.

The mainobject of this invention is to produce a construction in which said overhead pressure roll may be lifted into a sustained paper guiding position regardless of the position of the lower pressure feed means. Another object of this invention is to permit of the introduction of work to be acted upon not only from the rear of the platen but also from the front thereof in a front-strike typewriting machine having lower pressure feeding means and an overhead pressure roll.

Accordingly one feature of the invention consists in having the actuating means for the overhead pressure -o1] lifting means independent of the actuating means which control the lower pressure feed means. An other feature of the invention resides in having a movable member mounted on the arms which carry the overhead pressure roll, which movable member by its engagement with the framing that supports the platen serves to elevate-the overhead pressure u'oll into a sustained paper guiding position ou of contact with the platen. 1n the pr ferred form herein ber consists of a pivotallv supported member carried by the arms of the overhead pressure roll and the framing is conveniently prov ded with a cam surface with which said pivotally supported member engages, so that when it is turned around its pivot, the overhead. pressure roll Will be elevated into the sustained paper guiding position. Another disclosed said movable memthe ower feed tion shown in .Figs.

-d1cates a platen of any suitable construction platen circumferentially so that it forms a trou h for the introduction of work to be acte upon from the front of the machine. Combined with the foregoing is a lower pressure feed means which consists of a rear pressure feed roll below the line of printing and a paper pan extending from said rear pressure feed roll up to the point where the plate is located at the front of the platen, together with an overhead pressure roll which may be elevated into a sustained paper guiding position to permit the introduction of work in the rear thereof and thence downward between the transparent paper guide and platen at the front of the machine.

In the accompanying drawings the invention is disclosed in a concrete and preferred form and in these drawings:

'Figure 1 is an end elevation Of a laten and associated pressure feed means em odying the invention, with the platen shaft in section and with the parts shown in the position which they normally occupy during the operationpf the. machine.

Fi 2 is a.-'view similar to Fig. 1, showing ressure means in en age ment with: the platen but with the over ,ead pressuna roll. lnigiil elevated sustained paper ui ositiorii g F i ii is a view similar to Figs. 1 and 2 s owe the lower pressure feed means as mu as the overhead pressure roll out of cortact with the platen.

1 view of the platen and associated elements taken just inside the end framing and showing one of the arms for the overhead pressure roll, as well as the'actuating means for the release of the upper and lower rolls, removed.

Fig. 5 is a vertical. sectional. detail view on the line 5- 5 of Fig. 3.

Fig. 6 is a front elevation of a platen and. its associated elements illustrating ifmodification of the invention disclosed in thefirst five figures and with the rock lever for operatin the release means of the lower pressure. clearhess.

Fig. 7 is a vertical transverse sectional view of some of the parts shown in Fig. 6.

Referring first to 1 to 5 inclusive, 8 inmounted in the usual we in the framing 9 and having associated wit it a lower pressure feed means here taking the form of a lower front pressure feed roll 10 and a lower rear ressure feed roll 11, both of which are located below the line of print. In the particular form herein disclosed the lower front roll 10 is mounted in a lever 12 pivotally supported at 13 and'normally urged into engagement with the platen by means of the springs 14.

.frame in a well-known manner 4; is an enlarged vertical sectional eed means omitted for the sake of the form of the inven The lower rear roll 11 is mounted in n. pendent lever 15 pivotally supported at ii and normally urged into contact with the platen by means of the s ring 17. Suitable releasing means for said ower pressure feed rolls here take the form of a releasingcam bar 18 ro'tatably mounted inv the carriag and having cam portions, here takin the form of notches 19 and 20, into w ends of the levers 12 and 15 so that when the said releasing cam bar is turned, it wiH move the lower feed ressure rolls out of engagement with the p aten. The actuating or controlling means for said releasing means here takethe following form. 21 indicates a rock leversuitably supported on the stud 22 of the framing and gear sector 23 which meshes'with the gear sector 24 on the end of the releasing cam bar 18. It will be understood that by turning the rock lever from the position shown in Fig. 1 to the position shown in Fig. 3, the releasing cam bar 18 is turned and the lower pressure feed rolls moved out of contact with the platen.

25 indicates an overhead pressure roll above the line of print of the platen suitably mounted in the arms 26 and 27 which are ivotally supported at the point 28 of the raming in rear of thepaper table 29. The amplitude of movement of the arms 2.6 is such that the overhead ressure roll 25 may be moved from a position in contact the pa er table, the upward movement/being limite by the extension 30 which engages the stop 31 on the framing. A sprin 32 connects the framing and the arms 25 27 in such a manner that it will urge the river head pressure roll into either its active platen engaging position or into its idle elevated position once the pivotal poin, is passed. The releasing and actuatin means for the overhead pressure roll in t is case takes the following form. 33, is a member pivotall v mounted on the arms 26, 27 by meansof the tie rod 34, said member having at its upper end a handle portion 35 and at its lower end a roller 36. Formed on the framing 9 is a cam portion 87 of such a contour that when the member 33 is turned on its 1p ivotal point 8; from the position shown in ig. 1 to theposition shown Bi .2 and -3, the ovefliead pressure reifiwwififbe elevated into a sustained paper guid, 3g, position ttsfsliovvn which position is a in. point integthediate its 1platen engaging position and its idle ove' end position. Should it be desired to elevatx the overhead pressure roll still further, the fmaylofjfcdurse be done carrying a.

overhead pressure roll is here controlled by the same actuating means as is shown in Figs. 1, 2, 3 and 5, the member 33 being indicated in Fig. 6. It will further be understood that a member similar to the rock lever 21 is also utilized to operate the sector 24: on the end of thereleasin cam bar 18. In the modification shown in .igs. (Fund 7 however, the lower pressure feed means take the following form. The lower rear pressure roll 11 mounted in the lever 15 pivoted at 16 and controlled by the spring 17 is retained and may be released by turning the releasing cam bar 18 in the manner previously described. However, the lower front pressure feed roll is here omitted and in place thereof is utilized a plate 38 disposed horizontally just below the line of print in front of the platen. Said plate 38, however, is not mounted to move with the platen transversely but is carried b the bracket 3!) which is suitably supporter on the lower stationary rail -10 of the carriage race means.

Carried by the plate 38 or the bracket 39 is a transparent card-guide 41 which extends adjacent to the platen on both sides of and above the printing point. The upper end l2 of this card-guide is curved outwardly as shown, or, to put it differently, it does not follow the contour of the platen; The result is that it forms a trough for the introduction of work to be acted upon from the front of the machine. In order to guide the work which may be inserted from the front. of the machine properly in its relation to the platen, the paper pan 43, which is suitably mounted in the carriage supporting the platen. extends in the form ofa guide underneath the platen and up to the point where .the plate is located, so that a continuous circumferential channel is produced by the platen. the paper guide 41, the plate 38 and the paper pan 43. The paper guide 41 is provided with an opening 44 at the printing point so that the type indicated at 45 in Fig. 6 may place its impression upon the impressionireceiving material. on the platen. It will also he understood that the plate 38 is suitably cut out in a well-known manner to permit access of the type to the. work on the platen, and, further, that this plate 38 may carryia scale as indicated at 46 in the' usual manner. A7 indicates ribbon vibrating means of a known construction,

From the foregoing it will be readily understood that the lower pressure feed means and the overhead ressure roll canbereleased entirely independently ofeach other,that

is to say, the rock lever 21 may be actuated to release or topermit the aeturn of the lower pressure feed means regardless of whether the overhead pressure roll occupies the position shown in Fig. 1 or the position showlrin Figs. 2 and 3; and that, further, the member 33 may be actuated, regardless -of the machine.

of the position of the lower pressure feed means, to elevate the overhead pressure roll into its sustained paper guiding position, or to permit its return into contact with the platen; and that there is no sequence of operation between the release of the lower pressure feed means and the overhead pressure roll.

When the overhead pressure roll is elevated into the paper guiding position shown in F i 2 or in Fig. 7, it is possible to insert mater al from the front of the machine. In the case of the construction. shown in Figs. 1 to 5 inclusive, this would be done in case it were desired to make an erasure on the first sheet of manifold sheets. In these circumstances it will be readily understood how a card may be inserted back of the first sheet and may be brought down around the platen to the printing point when an erasure can be made upon the first sheet without leaving any impression upon the manifold sheets back of the first sheet. In the case of Fig. 7, it will be understood how a short sheet to be printed upon may be inserted from the front of the machine and may be be brought around the platen While the lower pressure feed means still retain firm pressure upon sheets inserted from the back For instance, in billing work it is frequently desired to' make out the original copies of bills on short sheets but to preserve carbon copies of a number of bills on one long sheet. Such a. condition is shown in Fig. 7 in which 48 indicates the long sheet and 49 the long carbon sheet which have .been introduced from the rear of the machine. Now by elevating the overhead pressure roll into its paper guiding position, a short sheet may be inserted back of said overhead pressure roll and inbetween the platen, the card-guide 41, the plate 38 and paper pan 43, Without in any manner disturbing the alinement of the sheets already held by the lower pressure feed means. Then, by lowering the overhead pressure roll,

the short sheet 'will be held firmly thereby.

Figs. 'and 7, regardless of the position of the o'ierhead pressure roll.

Therniember 33 has been specifically described as being mounted on the arms 26-2 7..It is evident, however, that it could be mounted on the carriage .end plate or elsewhere on the machine and by engage: ment with the arms 26- 27 cause the lifting of theoverhead pressure roll, so long as this movement is independent of the movement of the rock lever 21.

Ill

I claim:

1. A platen, an overhead pressure roll for engagement with the platen above the line of print, framing for supporting the platen, arms carryingsaid pressure roll pivotally supported in the .framing, and a member carried by the arms and engaging with the framing for lifting the pressure roll out of contact with the platen.

2. A platen, an overhead pressure roll for engagement with the platen above the line of print, framing for supporting the platen, arms carrying said pressure roll pivotally supported in the framing, and a member carried by the arms and engaging with the framin for lifting the pressure ro out of contact with the platen and for sustaining it in apaper guiding position above the platen.

3. A platen, an overhead pressure rol for engagement with the platen above the line of print, framing for supporting the platen,

' said pressure roll pivotally a cam on'the d a member mounted to move with the arms and engaging with the cam for lifting the pressure roll out of contact with the platen.

4. A platen, an overhead pressure roll for engagement with the platen above the line of print, lower pressure feed means, framing for supporting the platen, arms carrying said ressure roll pivotally supported in the fram1ng,-and a member, pivotally mounted on the arms and carried thereby engaging with the framing for lifting the pressure roll out of contact with the platen independently of the lower pressure eed means.

5. A platen, an overhead pressure roll for engagement with the platen above the line of print, lower pressure feed means, framing for supporting the platen, arms carrying said pressure roll pivotally supported in the framing, and a member, pivotally mounted on the arms and carried thereby engaging with the framing for lifting the pressure roll out of contact with the platen and for sustaining it in a paper guiding position independently of the lower pressure feed means.

it framing,

L 6; A platen, an overhead pressure roll for engagement with the platen above the line of print, framing for supporting the platen, arms carrying said pressure roll pivotally in the'framing, a cam on the and a member pivotallv supported on the arms and engaging with the cam on the framing for lift-m the pressure roll out of contapt with'the p ten.

of print,

.arms carrying contact with roll for the line framing for supportinglthe platen, arms carrying said pressure r0 pivotally supported in the framlng, the

7. A platen, an overhead pressure engagement withthe platen above vated position, r carried by the arms the fr ming to lift and sustain the'pressure roll in an intermediate pa er guiding position out 0 contact with t e platen.

8. A platen, an overhead pressure roll for engagement with the platen above the line of print, framing for supporting the platen, arms carrying said pressure roll, pivotally supported in the framin permittin the pressure roll to be swung rom a position in engagement with the platen le elevated position, and a member pivotall .supported on the arms and carried thereby for engaging the framing to lift and sustain 'the pressure roll in an intermediate paper guiding position out of contact with the platen.

9. A platen, an overhead pressure roll for enga ement with the platen above the line of print, framing for supporting the platen,

said pressure roll, framin permitting the pres one a position 1n ensupported in a sure roll to be swung gagement with the platen to an idle elevate position, a movab e member mounte move with the arms for engaging the framing to lift the pressure to 1 into a sustained intermediate paper guiding osition out of the platen, sai member permitting the pressure roll to be elevated still higher into its idle position by manual operation.

roll

aten to' an idle .intennediate sustained paper guiding position out of contact with the platen, said member permitting the roll to be elevated to its, idle position b manual operation.

Signed at New ork cit' in the county of New York, 0 a New York, this 8th day of Mag 917. i

BERT A, SCHWARTZ.

the

pivotally die

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