US1200978A - Type-writer carriage-operating mechanism. - Google Patents

Description

J. H. PILLINGS. TYPE WRITER CARRIAGE OPERATING MECHANISM. APPLICATION mm MAYIS. 1915.

1 ,QQQQ'YS. Patented Oct. 10, 1916.

2 SHEETS-SHEET I.

I. H.-PILLINGS. TYPE WRlTER CARRlAGE OPERATING MECHANISM.

APPLICATION FILED MAY15. 1915- 1 ,2Q@,9?8 Patent-ed Oct. 10, 1916.

Y Z SHEETS-SHEET 2- s rine straits JOEE H. FEELINGS, D HAMILTON,v 01 L310, ASSIGNDR TO THE NATIONAL AUTOMATIC TYPEWRITER CUMPANY, F HAMILTON, OHIO, A CORPORATION 0F OHIO.

Specification of Letters Patent.

TYPE-WRITER, CARRIAGE-OPERATING MECHANISM.

Patented Get. it 1916.

application filed may 15, 1915. ,Scrial No. 28,322.

' hey levers and other parts of a typewriter in such sequential order as is determined by perforations ina controller strip; and the invention relates particularly to, the mechanism by which the typewriter carriage is re-- turned to the starting point, and the paper moved forward the proper distance, in order that the printing of a new line may be be- The objects of the invention are to provide such a mechanism in a form which will require few changes in the typewriter itself, and none which will interfere with its manual operation in the usual way; which will be simple and inexpensive in construction and not liable to get out of order; and which is so organized that it will not be damaged if the connection between the typewriter carriage and said mechanism is accidentally broken. In the drawing, Figure 1 is an end elevation, showing the .inventiomof a typewriter, and an associated typewriter operatmg machine.- Fig. 2' 1s a front elevatlon of certain parts of the invention. Fig. 3 is a Section plan view in the plane of line 3-3 of Fig. 1 of so much of the right end of the typewriter operating machine as is concerned with the present invention. Fig. 4- is a plan view of the typewriter carriage, and some associated parts of this-invention.

The typewriter operating machine may in- I elude such parts as are shown and described in the McCall Patent No. 1,024,092, including; a longitudinally grooved rotatable cylinder A by which the perforated controller strip Eds moved along under therear ends of levers D, carrying pins that will drop through perforations in the strip into'the grooves in the cylinder, whereby the levers may be displaced endwise. It may also be assumed that this machine includes means substantially as shown in said prior patent. by which t e displaced lever D will be rocked so as to carry the front end down. It will be understood, however, that the typewriter operating mechanism may be constructed with mechanism quite different from that shown in'said prior patent, provided it contains suitable mechanism by which a per-.

a Worm which is fixed to cylinder A: On

the front end of this shaft, which has no endwise movement, one member 13 of an ordinary jaw clutch is fixed.-

An alined shaft 14 is mounted on the side of the frame 11. A sliding sleeve 15:is

mounted on the rear end of the shaft 14:, and I has an ordinary driving connection there- With,-as for example, a tongue and groove connection which it has not been thought necessary to show. This sliding; sleeve has clutch jaws 15 on its rear end for cooperation with the jaw clutch member 13. This sleeve has also an annular groove 15 for the reception of the forked end-of an arm 16 which is fixed to a sliding bar 16. This bar is parallel with the shafts 12 and 1 and is movable endwise. Adjacent to its front end it hast-he grooves 16 which receive the forked lower ends of a bell crank lever 17. Likewise, there is a notch 16 in the top of the-bar 16. A clutch restraining lever 18 is pivoted to the front end of the frame work 11, and its right end is in such position that the action of gravity will cause it to rest on this bar, and drop into the notch 16 when circumstances permit.

Two spools QOand 21 are fixed to the shaft- 14. To one of these spools 20 a strap 25 is fixed; and this strap goes up and over a sheave 26 mounted in a bracket 27 fixed to the typewriter frame near the top there f. Then this strap goes horizontally across the machine, and its end is connected with'the line space lever 28 which is a part of every typewriter. This lever is pivoted to the sliding carriage 30 as usual, and is ordinarily associated with such mechanism that when it is swung to the right it will cause the proper feeding movement of the paper so as to bring it into the position for printing a new line. To the other spool 21 a cord 29 is fixed, and this has a weight 29 suspended from its lower end; or a coiled retu'rn spring the bar 16 from restraint. Thereupon this bar actuated by a spring 17 will move rearward. This will carry the clutch member 15 into engagement with the clutch member 13, and thereupon the shaft 14 will be rotated. This will cause the strap 25.to be wound upon the spool 20. The first result will be to rock the line space lever 28 to cause the proper feeding movement of the paper, and then to draw the carriage to the right back to its starting position.

In all typewriters there are adjustable marginal stops with which the typewriter carriage engages. and by which it is stopped when it has reached-the proper position for the starting of a new line. One of such marginal stops 33 is'shown in the drawings, and is the one utilized for this purpose, with the present invention. Ordinarily these marginal stops are adjustably fixed to :1 marginal stop bar 34. Such a bar is shown in the drawing, but instead of being an immovable bar, this bar is mounted so as to be capable of a slight endwise movement horizontally to right and left. Its leftward movement back to normal position will always be produced by a spring 35 which is compressed between the stop 33 and an adjacent part of the frame work 11, and this leftward movement will be limited by a collar 36 fixed to said rod. But when the carriage is moved totbe right by the described mechanism. it will strike the marginal stop 33 and will move. it and the bar 2-H a short distance to the. right. livoted to the right side of the typewriter frame is a bell crank lever 40. The vertical end of this lever is opposed to the projecting right end ofjtlie stop bar 34'. The horizontal end of this=levenlies directly over and in contact with the end of a Vmftlfizlll) movable rod 43. which .is freely movable in guide brackets 43. 1%. The lower end of this rod rests upon the horizontal arm 17 of the bell crank lever 17. Therefore, when the ty iewritcr carria e has been drawn to the right and has come in contact with the marginal stop 33 it will, as stated, move the stop bar 34. This will rock the lever 40. This will causethe rod 43 to move downward, and

this will. so rock lever 17 that the bar 16 will 'be moved forward, and thereby withdraw the clutch member-15 from its engagement with the clutch member 13. lVhen, this has been done lever 18 will drop into the notch 16 and hold the parts in. the'described posi- "tion until lever 40 is'again rocked.

None of the described mechanism will in any way interfere with the operation of the typewriter manually in the usual way, except that the strap 25 has tobe taken care of in some way. It might, of course, be

temporarily disconnected from the lever 28;

but in order that this may not be necessary, the weighted cord 29. is as stated fixed to the spool; 21. When, therefore, the carriage is drawn back manually, this weight will turn the two spools 20. and 21 and the-shaft 14 as well, and thereby the strap 25 will be.

wound up. This strap 25 is subject to considerable wear and considerable strain, and may therefore break. If it should break, then of course,the typewriter carriage, can

not be drawn to the right by the described mechanism, and will not, therefore, operate the. mechanism by which the two clutch members are connected. Therefore, the

shaft 14 will continue to rotate and will, of

course, wind up the broken end of the strap 25. Thereafter, it would of course begin to wind up the weighted cord 29. When thissome device, such as a ring, 25, which is too large to go through the eye. cord be broken above this ring, then, when the cord is wound up the ring will en age the eye and ,will pull down upon the ro 43, thereby causing the disconnection of the two clutch members precisely as if the carriage,

in returning to its starting point, had caused said bar 43 to' move down.

Having described my invention, I claim: 1. In typewriter operatingmechanism, the combination, with the typewriter carriage, of a. strap connected at one end to said cars riage, a spool with which the other end ofthe strap is connected. an axially alined r0- tating shaft. s mug-actuated clutch mecha- If, now, the.

nism for connecting said spool and shaft, a

latch restraining such clutrh mechanism from action. means for releasing said latch, and a. train of mechanism operable by the return of the carriage for moving said clutch mechanism in the releasing direction and to the action of said latch.

2. In typewriter Operating mechanism, the I combination with the typewriter carriage, of a strap connected at one end, to said car.- riage, a spool with'which the other end of the strap is connected, an axiallyalinedro ond spool rigidly connected with the spool first mentioned, and a Weighted cord con nected to and suspended from saidsecond spool, said weight being' heavy enough to turn the spool with which it is connected and to thereby move all of the arts which the turning of said spoolis inten ed to move.

3. In typewriter operating mechanism, the combination with the typewriter carriage, a strap connected at one end to-said carriage, a spool on which said strap is wound, an axially alined rotating shaft, a clutch com.- prising two members of which one is movable into and out of engagement with the other, a spring acting to cause the engagement of said clutch members, an endwise movable bar having an operating arm which engages the movable clutch member and has a notch in its top edge, a latch lever which extends over said bar and is adapted to drop into said notch, means to withdraw the latch lever from said notch, and a train of mechanism adapted to be operated by the type writer carriage on its return movement to move said slidin ing direction an to such positien that the combination with tie typewriter carriage,

an endwise movable bar adjacent to the carriage, an adjustable stop on said bar in the path of a part of said carriage, a spring for moving said bar back to its normal position, a strap connected with the carriage, a spool on which the strap is wound, and an axially alined rotating shaftyspring-actuated clutch mechanism to cause the engaging movement of one of the members or said clutch mechanism, a latch to prevent the engaging movement of said movable clutch member, means to withdraw said latch, a train of mechanism for moving said movable clutch member in the unclutching direction and within the restraining influence of said latch, a member of said train of mechamam-being located adjacent the end of said endwise-movable rod, whereby the carriage in making its return movement will engage said stop'and'move said rod and thereby move said train of clutch releasing mechanism.

5. In typewriter operating mechanism,

bar in the clutch releas the combination of a typewriter carriage, a strap connected therewith at one end, a rotatable spool with which the other end of saidstrap is connected, an alined rotating shaft, springactuatedclutch mechanism for connecting said shaft and spool, an endwise movablefbar for disconnecting said clutch -mechanism,-which bar has a notch for the I reception of the latch lever, and a groove, a bell'crank lever having a forked arm which 5 engages ,in'the last named groove, a latch lever lying above said bar and adapted to enter said notch, an endwise movable vertical rod which engages with the lower end of said' bell crank lever, .21 second bell crank 30 lever whose horizontal arm engages with the top of? said vertical rod, an endwise movable rod which is slidable in a path parallel with that in which-the carriage moves, and

which hasone of its ends in substantialen- 35 gagement with the vertical arm of the last mentioned bell crank lever, a stop adjustably secured to the last mentioned endwise movable'rod and lying in the path of a part of the carriage, a spring acting on said rod to restore it to its normal position, and means to. withdraw. said latch from said notch.

, 6. In typewriter operating mechanism, the

combination with the typewriter carriage so of a strap connected at one end to said-carriage, a spool with which the other end of the stra is connected, an axially alined rotating s aft, spring-actuated clutch mechanism for connecting said spool and shaft, a

latch restraining such clutch mechanism from action, means for releasing said latch, and a train'of mechanism operable by the return of the carria e for moving said clutch mechanism in thereleasing direction and to the action of said latch, a second spool rigidly connected-with the spool first mentioned, and a weighted cord connected to and suspended from said second s 001, a

shoulder carried by one member of said train 1'10 of mechanism, and an overlying shoulder carried by said strap,-said shoutders be? so arranged that, in case the strap sho break between the shoulder thereon and the point where the strap is connected with the typewriter carriage, the shoulder on the strap will engage the other shoulder referred to and thereby move said train of mechanism in the clutch releasing direction.

7, in typewriter operating mechanism,

the combination of a typewriter carriage, a strap connected therewith at one end, a rotatable spool withwhich the other end of said strap is connected, an alined rotating shaft, spring-actuated clutch mechanism for bell crank lever having a forked arm which movable rod and lying in the path of a part engages in the last named groove, a latch lever lying above said bar and adapted to enter said notch, an endwise movable vertical rod which engages with the lower end of said bell crank lever, a second bell crank lever Whose horizontal'arm engages with the top of said vertical rod, an endwise movable rod which is slidable in a path parallel with that in which the carriage moves, and which has one of its endsin substantial engagement with the vertical arm of the last mentioned bell crank lever, a stop adjustably'secured to the last mentioned endwise of the carriage, a spring acting on said rod 15 to restore it to its normal position, and means to withdraw said latch from said notch, an eye secured to said vertically movable rod in position such that the strap passes through said eye, and a shoulder fixed 20 to the strap above said eye. H

In testimony whereof, I hereunto affix my signature in the presence of two witnesses.

JOHN H. PILLIN GS.

Witnesses:

A. H. LOUIS, A. F. KIEFER.

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