US1207629A - Paper-feed mechanism. - Google Patents

Description

A. c. ROVEBUCK.

PAPER FEED IVII'CHANISIVI.

APPLICATION FILED OCT. 26, 1914.

Patented Dec. 5, 19H3.

2 SHEETssHEr-:T I.

A. C. ROEBUCK. PAPER FEED MECHANISM.

APPLICATION FILED OCT. 26. I9I4.

LQUVQW Patented Dee. 5, 1916.

2 SHEETS*SHEET 2.

l are 'i AIITAH il?.l ROEBUCK, @E WOODS'ICK, ILLINOIS, ASSIGNOR T0 WOODSTUCK TYPEWRITER COMFANY, 01E' WOUDS'IOCK, ILLINOIS, A CORPORATION Olil ILLINOIS.

renna-reen Maclean-isn.

Leonesa.

peelcatlon of Letters Patent.

application tiled october 26, 191e. Serial No. 862,561.

To all whom `t may concern:

'Be it linown that I, ALVAH C. ROEBUCK, a citizen of the United States, residing at Woodstock, in the county of McHenry and State of Illinois, have invented certain new and useful Improvements in Pa er-heed struction, combination and arrangement of v the several parts generally shown in the accompanying drawings and described in the specification, but more particularly pointed out in the appended claims.

In the drawings, 4Figure 1 is a front elevation of that part of a typewriter carria e to which the present invention is applic Fig. 2 is a bottom view of the same; llFig. 3 is a sectional View on the line 3-3 of lig. 1; Fig. L1 is a` view of the operating lever at one end of the carriage; Fig. 5 is a sectional view on the line 5-5 vof lFig. 1; Fig. 6 is a view, partly in section, showing the operating lever in one position; Fig. 7 is a similar view showing the operating lever in its other'position, and Fig.l 8 is a view looking at one end of the paper apron.

In the present construction the feed roller shafts are supported at a distance -from their ends, thus lessening their tendency to spring so that all the rollers will bear more'evenly on the platen. An improved construction of .the paper apron is also provided in which there is ample room for the insertion of any` number of sheets upon which it is practicable to write.-

' Referring nowfmore, particularly to the drawings, a pair of end plates 10 are connected by rods 11 V4and pivotally mounted in the end plates is a platen 12. Also pivoted in the end-platesl() is a rock shaft 13 pref'- erably formed with one dattened side.

, Secured to the lowerxnost rod 11 is a r,bracket 1l for raising and lowering the platen, and extending upwardly from the bracket is an extension 15 forming a support for the middle of the rock shaft 13 and in which the rock shaft is freely rotatable.

A paper apron 16 is formed to extend beneath the platen with4 the rear side somewhat above the front sideof the apron' and curved slightly away from the platen., rIbis apron is formed with depending ears 17, 18 and 19 adjacent each end thereof, in each of which -is a perforation, the perforation of ears 17 being circular in form to form a close fitting connection for a rear roller shaft 20, and the other ears -18 and 19 are preferably formed with slotted perfor-ations, the slots of the perforations 19 being preferably curved on a radius of which the axis of the rear roller shaft 2O is the center.

Disposed beneath the paper apron 16 are frame elements 21 connected by a shaft 22 to which they are both affixed. Disposed on the rear roller shaft are rollers 23, pref erably four in number, and spaced apart on the shaft. Ihese rollers 23 are preferably located in openings at the rear of the paper apron made by forming with tongues 2a. Attached to one or more of the tongues 2l is one end of a spring 25, the other end of which is connected to a hXed pin or pro jection 26 which may be connected to the extension of the bracket 1t. @ne arm of each ofr the frame members 21 is journaled on the rear roller shaft at a point between -two of the rollers so that it does not bear on the end of the shaft. Another arrn of each of the frame members is journaled correspondingly to afront' roller shaft 27 the ends of which extend vloosely through the perforated ears 19. Mounted upon this shaft are front rollers 28 which press against. the platen through apertures 29 in the apron 16. rllhe front side of the paper apron is held in close relationship with the paper on the platen by lthe spring 25, and also by means of springs 36 which are coiled around the shaft 27 with one end in" engagement with the front of the paper apron and the other end in engagement with a scale 31.. This scale 31 is also secured to the forward arms of the frame members 21 and the lower edge of the scale is stiii'ened by a corrugation 32, the scale being held in position against the platen by means of the springs adjacent the frame elements 21. To reduce. the spring pressure on the front of the paper apron, the end of the spring which contacts with the apron may be connected with the frame members 21.

Extending from each ofl the frame members 21 is a bracket 34 provided with a projection 35, and mounted on the shaft 11 are -abutments 36 each adapted to. receive one end of a spring 37, the other end of which is held in place by the projection of one of the brackets. The tendency of these springs 37 is to press the frame members and consequently the rollers supported thereby firmly against the platen 12. The springs 30 on the front roller shaft tend to press the front of the paper apron against the platen, and the spring 25 connected to the rear end of the paper apron tends to rotate the front of the paper apron against the platen about the ears 17 as an axis.

Pivoted to one of the end plates l0 is a lever 38 which has a linger gripping portion 39 at the upper end, and a slot 40 in which a pin 41 secured to the end plate engages to limit the movement of the lever. Connected to the rock shaft 13 is an arm 42 and joining this arm and the lever 38 is a link 43 which is pivoted to the lever at a point movable on either side of a line connecting the pivot vpoint of the lever and the pivot point of the link by which it is connected to the arm 42, so that when the pivot point of the link 43 at which it is connected to i. the lever 38 is moved on either side of the said center line the lever will be locked in position. Also secured to the rock -shaft 13 are arms 44 the outer end of each being loosely connected by means of a fastening device 45 with a perforated ear 18 of the paper apron. Intermediate the arms 44 are shortarms 46 to prevent endwise shifting of frame members 21 and each of the arms 44 and 46 is provided with a shoulder 47 which is adapted to engage the paper apron when the shaft 13 is rotated, as shown by Fig. 7, and just before the lever 38 reaches the osition shown by this figure so that the ront side of the paper apron is lifted clear of the platen, as shown by this figure. Y

In its normal position the paper 4apron and the front and rear rollers are pressed toward the platen by means of springs 37 which engage the frame members upon which the roller shaftsare carried and thefront side of the paper apron is pressed toward the platen by springs 25 and 30. The scale 31 being lalso spring-pressed tends to hold the4 paper close to the platen adjacent the printing point so that the paper may be written on close to the very bottom, when desired. When the operating lever 38 is moved forward to the vposition shown by Fig; 7 the first action is to take up the lost motion by moving the fastening devices 45 to the bottom of the perforations of the ears 18. A continued movement of the lever moves the pressed paper apron with rollers away'from the platen adjacent the f from contact with the platen whereupon the spring 25 presses the front side of the paper apron against the platen until the paper apron is withdrawn to such an extent that it is yengaged by the shoulders 47 of the arms 44 and 46, whereupon the movement of the rear rollers away from the platen is stopped and the front rollers are moved to a greater extentuntil the paper apron assumes the position as shown by Fig. 7. This construction provides for firmly adjusting the paper apron to accommodate various thicknesses of Writing material which is necessary when using one or more thicknesses of paper, cards or the like, or in doing manifold work. This arrangement provides a rigid form of construction; for the front end of the paper apron is independent of the front rollers to the extent of the loose connection between them and the apron and the apron is automatically adjustable to whatever thickness of material is being used in. the machine While the lever 38 reaches above the paper apron at its front side so as to assist in writing nearer to the bottom of a sheet of paper..

What l claim is: l. A typewriter having sets of per about one side of which the apron is movable, the other sets being formed with slots to permit the rotation of the apron about the axis of the first named set to a limited extent, and means to press the apron toward the platen.

2. A typewriter paper feedingl mechanism comprising a loosely mounted spring depending perlaten, a paper apron forated ears, bodily, an oscillatable frame connected with the apron upon which one side of the apron is pivotally connected, and a lost motion connection between the frame and the apron at the other side of the latter whereby an oscillation of the apron with respect to the frame is possible.

3. Typewriter paper feed mechanism comprising a platen, ya paper apron movable toward and from the platen having sets of depending perforated ears one set of which is slotted and curved upon a radius extending from the axis of another set of ears, a movable frame pivotally connected to the last named set of ears, and a lost motion connection between the frame and the slotted ears whereby an oscillating movement of the apron is permitted with respect to the frame.

4. Typewriter paper feed mechanism comprising a platen, a paper apron movable to- 'orated depending ears i.

means for moving the apron insorgere ward and from the platen withA sets of perwhich is slotted, a friction roller shaft pivotally mounted in one Set of ears, another friction roller loosely mounted in the slotted ears, and rigid means forming a xed bearing for both of said shafts.

5. Typewriter paper feed mechanism comprising a platen, a paper apron movable toward and from the platen with sets of perforated ears extending therefrom, one set of which is slotted, a friction roller shaft pivotally mounted in one set of ears, another friction roller loosely mounted in the slotted ears, rigid means forming a xed bearing for both of said shafts, and resilient means for ytending to press the rigid means and the roller shafts in the direction of the platen.

G. rllypewriter paper feed mechanism comprising a platen, a rear feed roller shaft, a front eed roller shaft, means to rigidlyconneet the. two shafts, and a paper apron movable toward and from the platen with sets of perforated ears in one set of which the rear roller shaft is pivoted and having slots in the other set of ears through which the front roller shaft extends loosely whereby the front of the paper apron may oscillate to a limited extent about the axis of the rear roller shaft.

7. Typewriter paper feed'mechanism comprising a platen, a rear feed roller shaft, a

front feed roller shaft, means to rigidly connect the two shafts, a paper apron movable toward and 4from the platen with sets of perforated ears in one set of which the rear rol-ler shaft is pivoted and having slots in the other set of ears through which the front roller shaft extends loosely whereby the front of the paper apron niay oscillate to a limited extent about the axis of the rear roller shaft, and means tending to press the paper a ron away 'from the shaft 'at the front si e in the direction of the platen.-

8. ITypewriter paper feed mechanism comprising a platen,r a frame in which the platen is mounted, Ia paper apron having sets .of

perforatedears one set of which. is slotted, a

rear feed roller shaft'mounted in one set of ears, a front feed roller lshaft loosely mounted in the slotmd earaarigid'frame f connecting the shafts, the front of the apron being oscillatable withrespect tothe rigid frame, means for withdrawing the apron from the platen, and a s ring connected to the rear of the apron an to the frame for supporting the platen for pressing the front of the apron in the direction of the platen `when the apron is withdrawn fromA the platen 9., Typewriter pa er feed mechanism comprising a platen, a rame in which the platen is mounted, a paper apron having sets of perforated'ears one set of which is slotted, a rear feed roller shaft mounted in one set of ears, a front feed roller shaft loosely mounted in the slotted ears, a rigid frame connecting the shafts, the front of the apron Y being oscillatable with respect to the rigid frame, means for withdrawing the hapron from the platen, a resilient means tending to press the frame connecting the shafts in the direction of the platen, a spring connected to the rear of the apron and to the frame for supporting the laten for pressing the front of the apron 1n the direction of the platen when the apron is withdrawn from the platen, andv additional resilient means tendin to press the front of the paper apron away rom the front roller shaft against the platen.

.10.` Paper feed mechanism comprising a platen,l a paper apron movable toward and from the platen having sets of perforated vears and spaced apertures, roller shafts loosely mounted in the ears, feed rollers mounted on the shafts and ,adapted to contact with .the platen through the apertures, and a rigid frame connecting the shafts at points between the rollers and spaced from the ends of the shafts. i

ll1. 'llhe combination with paper feed mechanism, of a platen, a paper apron movable toward and from the platen and independently oscillatable about a rear longitudinal axis, resilient means tending to press the front of the paper apron in the direction of the platen, and means to bodily withdraw the apron from the platen, the said resilient means causing the front to be yieldingly withdrawn before the rear is withdrawn. i

12. The' combination with paper feed mechanism, of a platen, a paper apron movable toward and from the platen and independently oscillatable about a rear longitudinal axis, resilient means tending to press the front of the paper apron in the direction of the platen, means to withdraw the apron from the laten, and a stop for engaging the rear o theapron'after a predetermlned extent vof movement' thereof whereby the front of the apron will be withdrawn.

i3. The combination with paper feed mechanism,'of a platen, a paper apron movable towardl and from the platen and independently oscillatable about a rear longitudinal `axis, resilient means tending' to press the front ofthe paper apron in the direction of the platen, means to ywithdraw the apron fromthe platen comprising a roch shaft connected to the' apron, and a plural'u ity of arms mounted on the roclr shaft for engaging the apron after a predetermined movement thereof whereby hrst the rear and then the front of the apron is withdrawn.

Mc., Paper feed mechanism comprising a platen, a paper apron movable toward and rom the platen with sets of depending lugs some of which are slotted, resilient means ldd Lacasse the direction of the platen, feed roller shafts one of which is xedly pivoted in the rear of the apron andanother mounted in the front set of which is loosely 'of ears, a springpressed frame connected to the shafts tendthem and mean ring to press platen, I

in the direction of thes lfor withdrawing the apron from the platen comprising a lost motion connection with oneA set of lugs whereby the apron may be independently oscillatable about drawn from the p the rear roller shaft as as 'a whole is withlaten.

15. Paper feed mechanism comprising a platen,

a spring-pressed. apron movable to and from the platen and also independently oscillatable upon an axis. at the rear of the apron, and an inde scale mounted at pendently spring-pressed the front of the a ron adapted to engage the platen in front o the -ront edge of the papervapron.

16. Paper feed mechanism comprising a Yto platen, the platen,

a support movable toward and from and an independently springpressed scale mounted on the support and adapted to close to the 17. lIn nation with a plat a spring-pressedengage the platen at a point printing line to engage the bot tom of material to be close to the bottom edge of the material.

paper feed mechanism, the combiprinted for writing en, of feed roller shafts, frame for the shafts,

and an lndependently spring-pressed scale mounted on. the sha s and adapted to be pressed against the platen just below the printing line.

18. Paper feed mechanism comprising a platen, a

paper ap from the ron movable toward and platen and independently oscillatable about a longitudinal axis at the rear of the apron, means .front of the ,apron in platen, feed roller tending toI press ythe the direction ofr the ishafts, a spring-pressed frame for the shafts pivotally connected and independently thereto at .the fro the paper apron at the rear thereof oscillatable `with respect nt of the apron, means comprising a rotata to withdraw the apron and the frame from the platen, and an independently springpressed scale pivotally connected to the front roller shaft and movable to engage the platen onv a line nearer the printing point than the front edge of the paper apron.

19. Typewriter paper feed mechanism comprising a platen, vfront and rear roller shafts, rollers lmounted on the shafts, frame members forming journals for the shafts, a bar rigidly connected to the frame members forming a rigid frame structure in the form ofan H, and means for positively moving the said structuretoward and from the platen. i

20. Typewriter paper. feed mechanism comprising a platen, a pair of shafts, rollers mounted on the shafts, frame elements connecting the shafts at spaced distances, a bar rigidly connecting the frame elements and forming a solid structure, brackets extending from the frame member, a bar disposed below the frame members having abutments extending therefrom, and springs disposed between the abutments and the brackets tending to press the frame members in the direction of the platen.

21. Typewriter aper feed mechanismy le platen, roller shafts, rollers mounted on the shafts, frame memrs connecting the shafts, a bar rigidly connecting the frame members formin frame, means tending to press t e solid frame in the direction of the platen, operating means for overcoming the tension of the spring comprising a rock shaft, and arms mounted on the rock shaft adjacent the frame members to movement of the solid rame.

In testimony whereof I have signed'my name to thisjspecifcation, in the resence of two subscribing witnesses, on t is 17th day ofOctober A. D. 1914.

ALVAH C. ROEBUGK.

Witnesses:

L. E. HoUsHoLDER, yl). C. Almas.

a solid

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