US1150164A - Type-writing machine. - Google Patents

Description

R. M. BECKER.

TYPE WRITING'MAGHINE. APP LICATlON FILED FEB. 12, {913.

1,150,164. Patented Aug. 17, 1915.

ran; FATEE PATENT @FFKGE.

MGHARD lfll. BECKER, OF NEW YORK, N. Y., ASSIGNOR T0 JQHN T. UNDERWOOD, OF

BROOKLYN, NEW YORK.

TYPE-WRITING MACHINE.

incense.

Specification of Letters Patent.

Application filed Februazy 12, 1913. Serial No. 147,839.

To all whom it may concern Be it knownthat I, RICHARD M; BECKER, a citizen of the United, States, residing in Brooklyn, in the county of Kings, city and State of New York, have invented certain new and useful Improvements in Type-- -Writing Machines, of which the following is a specification.

My invention relates to typew'rlting machines, and for convenience is described as 7 rolls which bear against its underside, and

the feed or pressure-rolls.

which may be cast 05 from the platen by means of a hand-lever conveniently placed at one end of the typewriter carriage.

My inventionis directed particularly to In I the Underwood typewriter there are front and rear sets of feed-rolls.

One feature of the invention is 'to furnish means whereby pressure-rolls may be utilized in squaring a worksheet which is in sorted into the machine. For this purpose one set of said rolls may be arranged so they can be separately cast off from the platen while the other set of said rolls still remains in contact with the platen. The paper orwork-sheet may then be centered against the rolls which still bear against the platen,

. and then the work-sheet is. gripped in place by restoring the other set of rolls to normal position against the platen. This affords.

means of gripping the paper in place while it is still. squared against the rolls which In the accompanying drawings Figure 1 is a sectional side view of the carriage of an Underwood typewritingmachine taken on the line l1 of Fig, 6. Fig. 2 is a similar section taken on the line 22 of Fig. 6, and

also showing the lever operated to throw ofl" therear pressure rolls. Fig. 3 is a fragmentary section on the line 3-3 of Fig. 6, Fig.

4 is a fragmentary view perspective of a carriage showing the principal-parts necessary to the understanding of my invent-ion. Fig.

5 is a detailshowing thev means for casting off the rear pressure-rolls. Fig. 6 is a top plan view ofthe' carriage partly diagrammatical, and also shows a' modified mounting for'the rock shaft which is operated to throw off the rear feed rolls.

The'carriage of an Underwood typewrit ing machine comprises end-plates 1' and 2 connected by a paper table 3 at the rear of Patented Aug. 17,1915.

the carriage, and a tie-rod4, near the bot.-.

tom of the carriage. In the ends land 2 is journaled aplaten 5 fast on an axle 6, and against the bottomof said platen are pressed feed or pressure-rolls 7 and .8. The front rolls 7 are carried on a shaft 8, which is journaled in hooks 9 of arms 10, said arms being pivoted on the tie-rod 4, and said arms being extended beyond said tie-rod (as seen in full lines in Fig. 4 and in dotted lines in g d so that a turned-up lip '11-' on each extension furnishes .a bearing for a spring '12, which constantly'tends to press front roll 7 against the platen, There is preferably one of said springs at each end of the platen, and said springs mayhave their tension adjusted by a screw 13 in each lip 11, and said springs may bear against said screws by means of cups not shown herein, and the screws may be locked in place in any; usual or approvedfmanner Said springs hear at their opposite ends against brackets 143fast on the tie-rod 4.

. The rear pressure-rolls8 are carried on a shaft 15, which like the front shaft is journaled in hooks 16, said hooks being at the rear ends of arms 17 which arms include lips 18 overlying springs 19, which springs like the springs 12 bear against brackets fast on the tie-rod 4 and hold the rolls 8 1 against the platen. Said rolls may be cast oif in the usual manner by a handle 20 at one endpf the carriage. Said handle, by means of a link 21 extending downward from the extension of said handle, swings a rock-shaft 22 pivoted in brackets 23 fast on said tie-rod, and causes said shaft to cast the rolls 7 and 8 off from the platen. To-do this the shaft 22 is rotated by means of a crank 23 thereon, which the link 21 draws on; and the rotation of said shaft 22 turns a flat face 24 from the position seen in Fig. .1

to the position seen in Fig. 3. In so turning,

the edge of said fiat portion camsupwardly an overlying arm 25 which is pivoted on an arm 84 fast on the tiered 4, so that the, far-. ther end 26 ofsaid arm 25 overlying the shaft .loofthe rear pressure-rolls, forces said shaft and rolls downward awaytfrlom the platen. -l,he end. of said arm 25 nearest the rocleshaft'2i underlies a pin 27 fast on the arms 10,011 which the front pressure:

off from said platen separately, and then a. 1

paper passedfrom the rear of the type writer over the paper table 3 may be pushed forwardly under the platen past said rear, rolls until it strikes-the front pressure-rolls 1. In this way said front pressure-rolls may be utilized in squaring the work-sheet in the machine'- The paper. table 3 is ex-u tended forward beneath the platen to or beyond. the front rolls 7, and is spaced from the platen to form a passageway through which; the work-sheets are guided in brin ing the leading edge up to the gage rolls For thus moving away said rear rolls there is provided a finger lever '28 fast on a shaft. When the 29 journaled in the arms 25. finger-piece 28'is moved rearwardly, it rocks the shaft 29 so that arms 30 fast thereon bear down on the shaft 15, and press the rear rolls 8 downward clear of the platen,

so that a work-sheet may be easily pushedpast them. The arms 25 in which the shaft 29 is journaled are kept alined by turnedup extensions 31 lying outside of the tierod 4 while the mainbody of the arm 25 lies between the arms 10 and a collar 32 fast on the tie-rod. Each arm 25 also comprises an extension 33 above the floating-shaft 29, which extension is pivoted to the arm 34 extending from the collar 32 on the tie-rod 4:. The arrangement of said pivotal mounting of the arm 25 is best seen in Fig. 5 where it is shown onan enlarged scale. From said Fig. 5 it will be clearly seen that each method of casting off the rear feed-rolls is entirely independent of the other method, so that the two sets of casting off mechanism can in no wise interfere with each .other.

A spring 35 encircling the shaft 29 holds the fingenpiece 28 in its normal position even when the pressure-rolls are cast off by the handle 20. Due end of said spring is anchored by coils which encircle the rock shaft 1 22, while the other end of said spring nor-- mally holds the lingerpiece 28 inits forward position. The handle 28 is preferably at the left-hand end 'of the carriage where the lefthand. may easily operate it While the right-hand is adjusting the worksheets in the carriage.

It will be observed that the finger-piece or handle 28 isplaced not far from the paper table 3,; and to cast off the rolls 8 1t fis moved fromlthe osition seen in Fig. 1,

which is considerab y forward of. said table to the'posi'tion seen in Fig. 2, where it lies against the table; Thus it is convenient for the hand or Wrist of the operator in moving a work-sheet, to bear down against said handle 28 and keep the roll 8 released while the work-sheet is being adjusted. Since there is no detent or other device holding the handle 28 in its releasing position, the mere lifting of a hand of the operator will cause the pressure-roll 8 to grip the worksheet. ,In other words, both hands of the operator can be used in adjusting a sheath of sheets at onetime, while the back or wrist of the, left-hand of the operator is holding the pressure-roll 8 released, and the mere liftingof the hand of the operator "will permit said roll to bind and hold the sheets Wherever adjusted.

The shaft 29 instead of being carried as a floating shaft in the arms 25 may, if desired, be journaled in the platen frame, as

shown in Fig. 6.- w

Variations may; be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I

claim: I

' 1. In a front strike typewritingmachine, the combinatioii with a platen, of front and rear pressure rolls beneath said platen, a paper table behind said ,ylatan, means for holding said rolls against the platen, means for casting off the rear pressure rolls separately from the. front pressure rolls, the front rolls being retained against the platen and forming a gage for the leading edge of a work-sheet, said rear pressure rolls when cast'ofi' leaving an unobstructed passageway for advancing the work-sheet from the paper table .betweeIY the platen and rear rolls, to the front rolls, a key, and means operated by the key for simultaneously casting off all of said rolls.

2. In a front-strike typewriting machine,

the combination with a platen and front andf rear sets of pressure rolls for said platen, of means for independently holding the front and rear rolls with a yielding pressure against the platen, apaper table behind said platen, akey, means operated thereby to simultaneously overcome the holding power of both sets of rolls for releasing said sets simultaneously from said platen, and means for casting off the rear rolls separately from thefront rolls.

3. in a front-stril e typewriting machine, the combination with a platen, of front and rear sets of pressure rolls beneath the platen, springs holding each set of rolls against the platen independently of the platen, springs for independently pressing other set, one set of rollers forming a gage fora work-sheet, a finger-piece at the lefthand end of said platen for casting off the other set of rolls while the first set is retained against the platen and leaving a free passageway for the leading end of the worksheet to be inserted between the cast ofl casting off the rear rolls without casting off the front rolls.

5. In a typewriting machine, the combination with a rotatable platen, of front and rear pressure-rolls bearing against said said rolls against said platen, an arm for casting ofi said rolls simultaneously from said platen, and an independently movable arm for casting off one set of said rolls independently of the other set.

6. In a typewriting machine, the combination with a platen and front and rear pressure-rolls running thereon, of a spring for each of said rolls normally'holding them agalnst the platen, an arm overlying one set of said rolls, means for moving said arm so as to move said rolls and theother rolls s1- multaneously from said-platen, and a second arm overlying said first set of rolls for moving said rolls separately from said platen.

7. The combination with a platen, of a roll normally pressed against the platen and forming a gage for the leading end of a work-sheet, another roll past which the work-sheet is carried in being inserted in the typewriter, said second roll normally bearing against the platen, means for casting said second roll ofi the platen without disturbing said first roll, a key, and a device Operated thereby for simultaneously casting ofi both of said rolls.

8. In a front-strike typewritingmachine, the combination with a 'rotary platen, of

front and rear pressure rolls, means for holding said rolls with a yielding pressure against the platen and' permitting either roll to :be moved from the platen independently of the other roll, means for throwing oil the rear roll while the-front roll remains against the platen to form a gage for the leading edge of a work-sheet, a paper table at the rear of the platen and extending forwardly beneath the platen, said extension being spaced from the platen to form a passageway through which the leading edge of the work-sheet may be freely moved while the platen is at rest and the rear roll moved away from the platen, to bring the edge of the work-sheet against said gage roll, a I

key, and means operated thereby for simultaneously throwing both the front and rear pressure rolls off the platen.

-9. In a'typewriting machine, the combination with a. platen and front and rear pressure rolls therefor, of means for holding each of said rolls against the platen with a spring pressure, each of said rolls movable away from the platen independently of the other, said front roll forming a gage for the leading edge of a work-sheet,

a paper table extended forward to said front roll and forming with the platen a passageway through which a work-sheet may be freely moved, means for casting ofl? the rear pressure roll independently of the front roll, and a key actuated device to simultaneously cast ofi' both said rolls by the actuation of the key.

RICHARD M. BECKER. Witnesses:

F. E. ALEXANDER, JULIUs DUCKSTINE.

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