US2015728A - Paper feeding mechanism - Google Patents

Description

Oct. `l, 1935. y 1 H RESCH 2,015,728

PAPER FEEDING MECHANISM -Fi1ed Aug. 15, 1951 3 sheets-sheet 2 Figa.

INVENTQR Hen/y esc /7.

om ArroRNEY Y' oef. 1,1935. H RSCH 2,015,728

y f PAPER FEEDING MECHANISM Filed Aug.. 15, 19:51 s sheets-sheet 3 l JNVENTOR BY v /ZQ/Qesb' 2% AIITORNEY Patented Oct. 1, 1935 LUNITED STATES `PA'rEN'lf OFFICE PAPER FEEDING MECHANISM Henry Resch, Bayonne, N. J., assignor, by'mesne assignments, to Ralph C. Coxhead Corporation, New York, N. Y., a corporation of Delaware Application August 15, 1931, Serial No. 557,236 Y 9 Claims. (Cl. 12N-127) This invention relates to improvements in typewriting machines and more particularly to paper feeding mechanism therefor. It is in the nature of improvements which may be used with the de- 6 vice illustrated in the application of Frank H.

Trego, Serial No. 399,733, filed Oct. 15, 1929.

The Varityper writing machine, inv connection with which the invention is herein illustrated, includes .a'set of feed rollers by which a 10 Y work sheet may be fed upwardly between a. type shuttle' at the front thereof and a hammer at the back of the work sheet. Because of the fact that these feed rollers are located below the printing point, it. has been impossible to type to l5 the bottom edge of a work sheet.

An object of the present invention is to provide means whereby the work sheet is held so that the bottom edge thereof maybe typed upon.

To this end there is provided a set of feed rollers, arranged above the printing point, by which the work sheet 'may be fed after itleaves the Y bite of the lower feed rollers and thus present the lower edge of the work sheet to thevprinting instrumentalities.

A'feature of the invention relates to the positioning of the feed rollers so that the bite of the lower ones is in the same vertical plane extending through the bite of the upper ones and through the printing point, so that the work sheet may always be presented in a flat condition to the printing instrumentalities.

Some of the features of the invention relate to the manner of supporting the feed rollers, the means for releasing them and the means for line spacing the work sheet 4with the feed rollers.

In carrying out the invention there is provided a rack or bracket, supported on the carriage above the printing instrumentalities, and upon which are' supported the feed rollers. .The rack is also 40 provided with one or more channel-shaped guides to hold the work sheet and to direct the work sheet to and away from said feed rollers.

The paper rack is pivotally supported on the carriage so that it may be swung rearwardly with the feed rollers and the paper guides thereon to lay thework sheet on an erasing shelf located behind the vertical plane in which the work sheet is fed to and from the printing point. Novel detents are provided to hold the paper rack in its various positions.

Another feature of the invention relates tol channel-shaped guides which are formed to facilitate the insertion of a work sheet into the machine from the top of said guide.

carriage showing the invention applied thereto; 5

Fig. 2 is a vertical section of the carriage taken 'on the line 2-2 ofrig. 1;

Fig. 3 is a side elevation of a portion of the carriage and the paper rack with the feed rollers released; 10

Fig. 4 is a. view similar to Fig. 3 showing the paper rack swung back to lay the work sheet on the erasing shelf; and

Fig. 5 is a detail sectional view taken on the line 5-5 of Fig. 3. 15 Similar` characters refer to similar parts throughout the several views.

The invention is shown as applied to a Varityper writing machine which includes a carriage 'I having a. bar 8 by which it may travel back 20 and forth, through the medium of rollers or balls 9, on a rail I0 secured to the main frame II; the carriage being guided at its upper end by a bar I2, secured to end pieces I3 of the carriage.

A work sheet'l Il'may be fed up from a con- 25 taner I5 by feed rollers I6 and I1 to advance it between a printing hammer I8 and a type carrer or shuttle I9. The hammer I8 is arranged behind the work-sheet and is adapted to co.- operatewith types 20 of the type shuttle I9; the 30 shuttle being indexed to select the type inthe usual manner by means including an actuator 2l operated by the character keys (not shown). The work sheet may be advanced from line to line by the usual line spacing mechanism in- 35 cluding a line space wheel 22 secured to a shaft 23 to which the feed roller I6 is secured, said shaft 23 being rotatably supported in arms 24 secured to a shaft 25 pivotally supported in the end pieces I3 of the carriage. 40

The feed roller I6 is normally pressed against the other feed roller I1 by a spring 26 which may be coiled around' the shaft 25 and acts on one of the roller supporting arms 2l;

'I'he feed rollers may be released in the usual 45 manner by a release lever 21, the upper end of which may swing rearwardly about the shaft 23. The lower end of said release lever, which is in the form of a cam, engages a stud 28 on the end piece I3 of the carriage to carry the feed roller 50 I6 rearwardly against the 'action of the spring 26, the stud 28 engaging in a notch 2`Ia of the release lever to hold the latter in its operated position.

When the bottom edge of the work sheet is about to leave thel bite of the feed rollers I6 and I1, a set of upper feed rollers, indicated generally by the numeral 29, is brought into action as in Fig. 2. This set of feed rollers is supported above the printing instrumentalities, and is operable in a manner hereinafter described; the rollers of said set being normally released, as in Fig. 3, while the work sheet is being fed by the regular feed rollers I6 and I1. i

While the work sheet is being fed by the lower feed rollers |6 and I1, that portion thereof above the printing line may be guided by a paper rack, indicated generally by the numeral 30, which includes two end `pieces 3| secured to each other by horizontal rods or bars 32 and 33, each end piece 3| being supported on a stud, indicated generally by the numeral 34, (Figs. 1 and 5) secured to the carriage end I3 by a nut 35 threaded onto a shank 36 of the stud 34.

Supported on the bar 33 are two guides 31, one at each side of the work sheet I4. Each guide has a portion 38 bent upafrorn its side edge of the body portion 39 to form a channel or groove 40 in which the work sheet is guided. Said guides are adjustable sidewise on the bar`26"according to the width of the work sheet and according to the position of the sheet lengthwise of the carriage. Each side guide is provided for this purpose with two ears 4I bent rearwardly therefrom and embracing the bar 33. Collars 42 secured to the bar 33 by screws 43 hold the end guides 31 in their adjusted positions.

A web 44 of each paper guide joins the portion 38 with the body part 39. This web is of considerable length and is used to square a fresh work sheet in the machine. The usual stationary line guides 45 may be used to position a work sheet in the machine at the printing line.

The set 29 of upper feed rollers includes two rear feed rollers 41 secured to a shaft 48 rotatably supported in the end pieces 3| of the paper supporting rack 30, the feed rollers 41 having each a metal core 41a through which a set screw 41b is threaded to secure the feed roller to the rod 48. The set 29 further includes forward feed rollers 49 rotatably supported on a rod 58 secured to arms 5| by screws 52; said arms and the rod 50 constituting a feed roller supporting frame which is pivotally supported `on shouldered screws 53 by which the rod 32 is secured to the end pieces 3| of the paper rack.

Springs 54 are provided to act on the arms 5| of the feed roller frame to press the feed rollers 49 against the rear feed rollers 41 to firmly grip the work sheet I4. Each spring 54 is coiled around the rod 32 and one end thereof is anchored by a screw 55 threaded through a collar 56 and bearing against the rod 32. This provides a means of adjusting the spring to produce the desired pressure ofthe feed rollers 49 against the feed rollers 41. The feed rollers are held in position lengthwise of the rod 5|] by collars 51 secured to the rod 58 by screws 58.

To line space the work sheet I4, by means of .the feed rollers 41 and 49, there is provided, on

the rightehand end of the shaft 48, a nger wheel or knob 59 by which said shaft may be rotated. The work sheet is located in line space position by a ratchet wheel 60 secured to the other end of the shaft 48, said ratchet being acted upon by a spring pressed detent 6| pivotally supported on the rod 33. v

Provision is made for inserting the work sheet into the machine by passing it down through the side guides 31. To facilitate the entrance of the work sheet into said guides, the upper free corner 62 of each of the forward portions 38 is flared outwardly to provide a wide mouth at the top of each channel 40 of the guide.

To release the upper feed rollers there is pro- 5 vided, at the right-hand end of the carriage, a lever 65 pivoted on a shouldered screw 66. The upper end of thelever 65 is provided with a finger piece so that it may be pushed rearwardly about the pivot 66 to cause the lower end 61, which acts 10 as a cam, to engage the end piece 5| of the feedr roller supporting frame to swing the latter about its pivots 53 and carry the feed rollers 49 away from the feed rollers 41 from the position in- Fig. 2 to the position in Fig. 3. 'I'he release lever 65 is 15 arrested in its operated position by a stud 68 and while in this position the end of the cam 61 is on, or slightly beyond, the dead center so that the feed rollers are locked in their released positions against the action of the springs 54. To cast on 20 the feed rollers 49 the release lever 65 is moved away from the stop 68; and after the end of the cam 61 moves olf the dead center the springs 54 swing the feed roller supporting frame to carry the forward feed rollers 49 against the rollers 2'5 41 to grip the interposed work sheet.

An erasing shelf or table 10 is supported on the carriage overwhich the workI sheet may be laid when an erasure is to be made. Said erasing shelf is located behind the plane in which the work 3G sheet is normally disposed. Accordingly the paper rack 3|) may be swung rearwardly about its pivot 34 to the position in Fig. 4. Stops 1I and 12 on each of the rack ends 3| engage a stud 13 on the carriage ends I3 to limit the movement of the 35 paper rack 30 to its active or inactive position (Figs. 3 and 4).

To hold the paper rack in its two positions there is provided on each pivot stud 34 a resilient detent 15 having a protuberance 16 to either onek of two apertures 11 and 18 on the end piece 3| of the paper rack. The detent is supported on the bearing portion 19a of the stud and is held thereon by a head 19 of said stud. The width of the bearing portion is slightly greater 45 than the combined thickness of the end piece 3| and the detent 1| so as to permit freedom of movement of the end piece about the stud. To prevent turning of the detent with the end piece the detent is provided -with two ears 80 which 50 engage the opposite sides of the rectangular head 19 of the fixed stud 34. This makes a simple and highly eicient detent which may be readily assembled without rigidly securing it to another ele,

ment in the machine. Consequently it may read- 55 ily be replaced by a new one at any time if necessary.

To assist in positioning the paper guides 31 at the desired letter space position on the carriage, there is provided a scale bar 85 secured to two 60 arms 5|, of the pivoted frame which supports the feed rollers 49, by screws 86. The usual pointer 81, located at the printing position, co-operates with the scale 85 to indicate the letter space position of the carriage. When the paper rack is 65 swung back the scale 85 may be lifted to the dotted line position to give access to the work on the erasing shelf as in Fig. 4.

Itwill be understood that although the invention may be used in connection with ordinary 70 work sheets it may also be used for relatively stiff cards, such as index cards, and for stiff stencils.

In some classes of work vthe upper feed rollers may be used alone while the lower feed rollers remain released, but where it is desired to write engage in 40 i Cil on the upper edge and the lower edge of a work sheet, both sets of feed rollers are used to /feed it. For example, when it is desired to type to and including the lower edge of the work sheet it is rst fed by the lower feed rollers I6, Il. Before the lower edge reaches said feed rollers the upper feed rollers are rendered effective to grip the work sheet after which the lower feed rollers may be released by the handle 21 as previously described. The work sheet may then be line spaced by the finger wheel 59.

Having thus described the invention, it should be understood that alterations and changes may be resorted to without departing from the spirit of the invention as defined in the appended claims.

I claim:-

1. In a typewriting machine, the combination of a carriage, printing instrumentalities, two paper guides to embrace the sides of a work sheet to assist in guiding it in a flat condition downwardly to the printing instrumentalities, feed rollers for said work sheet above the printing instrumentalities, the bite of the feed rollers being in the plane in which the work sheet is guided by said guides, means to adjust the paper guides for various widths of work sheets, and means to adjust the feed rollers, accordingly, there beingan open space between the two paper guides in which the feed rollers are located.

2. In a typewriting machine, the combination of a carriage including two end pieces, printing instrumentalities, a frame supported on said carriage, said frame being located above the printing instrumentalities, said frame having two end members and a cross bar extending between and secured to said end members, a second cross bar` on said frame, feed rollers on the last mentioned cross bar, a frame pivoted on the rst mentioned frame, feed rollers on the pivoted frame to co-operate with the first named feed rollers, side guides on the secured cross bar to direct a work sheet between the feed rollers, and pivot studs connecting said end members with said end pieces to piv. otally support the rst mentioned frame on said carriage to enable it to 'be swung to an ineffective positionv on said carriage.

3. In a typewriting machine, the combination of a carriage, printing instrumentalities, a frame pivoted on said carriage and extending above the printing point, a paper guide supported on said frame, an erasing shelf located at a lower level than the paper guide, said frame being swingable rearwardly to carry the work sheet over the erasing shelf, and a fixed detent on the carriage to engage the pivoted frame .to hold the latter in both of its positions.

4. In a typewritingy machine, the combination of a carriage frame, printing instrumentalities therefor, feed rollers supported on the carriage frame, a' paper guide rack, two studs 'secured to said carriage frame to pivotally support the rack,

an erasing shelf located behind the plane in which the rack is normallyv located. said rack being swingable rearwardly anddownwardly about said studs from a normal 4vertical position to lay that portion-of the work sheet above the -feed rollers over the erasing shelf without disturbing the position ofthe feed rollers, and a detent secured to one of said studs and to engage the rack to hold the llatter -in its normal position.

i5. In `a vtypewriting machine, the combination of a carriage, printing instrumentalities therefor, apaper guide rack, two studs secured to said carriage to pivotally` support the rack, an erasing shelf located behind the plane in which the rack is normally located, said rack being 5 swung rearwardly aboutsaid studs to carry the worlr sheet over the erasing shelf, one of said studs comprising a head and a shank, and a detent supported on the shank of said stud to engage the rack to hold the latter in its normal position, said detent having an extension to engage the head of the stud to prevent rotation of the detent about the stud.

6. In a typewriting machine, the combination of a carriage, printing yinstrumentalities there-` for, a paper guide rack, two studs secured to said carriage to pivotally support the rack, an erasing shelf located behind the plane in which the rack is normally located, said rack being swung rearwardly about said studs to carry the work sheet over the erasing shelf, the rack including two end pieces by which it is supported on said studs, each stud comprising a shank by which it may be secured to the carriage, a. bearing portion to support one of the end pieces of the rack and a square head, and a detent supported on the bearing portion of one of the studs to engage the end piece to hold the rack in its normal position, said detent having two ears bent olf therefrom to engage the sides of 3o the square head of the stud to prevent rotation of the detent about the stud.

7. In a typewriting machine, the combination of a carriage, a frame secured thereto, said frame including an upper rod, a lower rod, and an intermediate rod, a feed roller on said lower rod, a frame pivoted on said upper rod, a feed roller on the pivoted frame to cooperate with the first mentioned feed roller and channel shaped guides on the intermediate rod to t around the side edges of a work sheet to direct said work sheet into, the bite of said feed rollers.

8. In a typewriting machine, the combination of a carriage, a frame secured thereto, two paper guides adiustably mounted kon said frame towards and away from each other to accommodate different widths of work sheets, a feed roller located in the open space between said guides and mounted on said frame independently of said guides, a. U-shaped frame including a crossbar and two arms extending upwardly therefrom, one at each end of said cross-bar, the U-shaped frame being pivoted at the upper ends of its arms on the first mentioned frame, a feed 'roller on said bar, and a spring to act on the U-shaped i at each end of Vsaid cross-bar, the U-shaped frame being pivoted at the upper ends of its arms on the rst mentioned frame, a feed roller on said bar, a spring to act on the U-shaped frame to press the feed rollers together, said arms havingveach an extension below said rod, and a scale bar located belowthe feed rollers and secured to said extensions to assist in setting the` paper guides endwise of the carriage.

HENRY RESCH.

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