US1162689A

US1162689A - Writing-machine.

Info

Publication number: US1162689A
Application number: US73631912A
Authority: US
Inventors: Alrah B Edwards; Frank K Russell
Original assignee: STANDARD PHONOTYPE Co
Current assignee: STANDARD PHONOTYPE Co
Priority date: 1912-12-12
Filing date: 1912-12-12
Publication date: 1915-11-30
Anticipated expiration: 1932-11-30

Description

A. B. EDWARDS & F. K. RUSSELL.

WRITING MACHINE.

APPLICATION FILED DEC. I2. I9I2.

Patented Nov. .30, 1915.

3 SHEETS-SHEET I.

A. B. EDWARDS & F. K. RUSSELL.

WRITING MACHINE. APPLICATION FILED DEC. I2. 1912.

Patented Nov. 30, 15H5.

3 SHEETSSHEET 2.

A. R. EDWARDS RL E. K. RUSSELL. WRITING II/IACIIINE.`

APPLICATION F1LED DEC. 12. 1912. i

Patented Nov. 30, 1911 alitozucu WRITING-insonnia.

Specicaticn of Letters llatent.

Patented N ov. 30, 19315.

. Application IledDecember 12, 1912. iSerialyNo. 736,319.

To all whom t may concern.'

Be it vknown thatl we, ALRAH B. EDWARDS and FRANK K. RUSSELL, citizens of the United States, residin at Dallas, in the county of Dallas and t invented certain new ments in Writing-Machines, following is a specification.

Our invention relates to stenographic writing machines and particularly to a ribbon feed and reverse for such machines.

The object of our invention is to provide a simple yand lefi'icient ribbon feed and re- .and useful Improveof which the verse automatically operated through the is a pair of ratchet wheels 7, 7.

medium of a universal bar from the mechanism of the machine.

e have illustratedl one exemplification of our invention in the drawings, in which: Figure 1 isa top plan View of the invention applied chine, showing the ribbon feed in .one position. Fig. 2 is a sectional view taken on the line veof Fig. 1. Fig. 3 is a rear elevation ofthe invention. Fig. 4. is a top plan view thereof, showing the ribbon feed in the opposite position from that shown in Fig. 1. ig. 5 is a detail of the springs forming part of the invention. Fig. 6 is a detail of the retaining dog.

Referring more ings, reference character 1 designates a striking pivoted universal bar which is oscillated to-gy ward the rear of the mach ine by the movement of type bars 2, each of which is in turn operated by the depression of its corresponding key lever 3, and returned to normal position by the forwardly acting impulseof the spring 4. y reverse is actuated by the universal bar 1.

The striking mechanism of the machine, exceptvas above indicated, and other related parts of the machine shown in Figs. 1 and 2 form no part of the present invention and 4 will not here be described.

- mechanism shown in Fi he present invention consists in the gs. 3, 4, 5 and 6.

Suitably journaled in the framework of the machine is a pair of oppositely disposed spool spindles 5 which carry at the upper ends thereof the ribbon spools `6, 6. Mounted on the other end of said spindles 5 spring-pressed

pawls

8, 8 engage said ratchet wheels 7, 7, said

pawls

8, 8 being pivotally mounted on a pair of levers 9, 9

ate of Texas, have to a stenographic writing mapressed

pawls

13, 13

particularly tothe draw- Yof th he ribbon feed and provided with'recesses 10 in the rearwardly extending arms thereof which engage the universal bar1 heretofore described. The

pawls

8, 8 areconsiderably wider than the ratchet wheels 7, 7 for the purpose of engaging a pair of adjacent inafter described. pivoted at 1 1 to the framework ofthe ma- 9 and the ratchet wheel 7 or 7 which is engaged by t e corresponding

pawlV

8 or 8 is intermittently rotated while the machine is being operated. As will later appear, the ratchet wheels 7 and 7 and the correlated spools. 6 and 6. are rotated in the directions o their respective arrows and then reversed.

en the ribbon l2 1s being wound upon the driven spool the unwinding thereof idly rotates the other spool. pair of springof substantially the same width as the

pawls

8, 8 serve to hold the ratchet wheels 7 against slippage during the idle strokes of the

pawls

8, 8.

he automatic ribbon reversing mechanism will now be described. A doublearmed lever 14 is pivoted to the framework e machine at 15. The arms of the lever 14 are rearwardly extended at 16 and carry at the outer ends thereof a pair of spring-pressed pivotally-mounted dogs17, 17. -The

dogs

17, 17 are adapted to bear upon the ribbon 12 on the

respective spools

6, 6 and, when the ribbonis entirely un- .wound from the corresponding spool, to

19 is provided with elongated slots 20 at each end thereof, said slots being adapted to each receive a pin 21 provided on a pair of

cams

22, 22 loosely mounted on the spindles 5 adjacent the ratchet wheels 7, 7 he cams 22 are shaped as illustrated in Fig. 4'. The level 19 is provided at one s ide with a forwardly extending arm 23 tion of the framework of the machine 1s a ing on the position of the lever provided with an upturned portion 24.\ An arm 25 is fixed to said upturned portion 24 and passes through an apertured upturned lug 26 provided on the lever 14. The arm 25 is provided at its free end with'an integral button 27. A coiled spring 28 is mount@ on the arm 25 and bears againstthe upturned portion 24 and the lug 26, and a similar coiled spring 29 is mounted on the arm 25 and bears against the lug 26 and the button 2T.. Conveniently pivoted to a pordog 30 provided with a proyection 31 adapted to enter either one of two

notches

32, 32 provided in the extension 23, depend- 19, and reing operafed from tain said lever in the correspond tive position until the ribbon is one spool to the other. is fixed at one end to the framework of the machine and at the other end to the projection 31 and serves to hold the dog in enga ement with the

notch

32 or 32.

he operation of the ribbon reversing mechanism is as follows: 1t will be noted that in Fig. 4 the ribbon 12 has been entirely unwound from spool 6, the cam 22 has been shifted out of engagement with the

pawls

8, 13 so that said pawls are imelled by their springs into engagement with the ratchet wheel 7 and the 13 have been thrown out of engagement with the ratchet wheel 7 by the shifting of the cam 22- so that the next operation of the striking mechanism will rotate the spool 6 in the direction of the arrow. lVhile the ribbon was being unwound from spool 6 and lever up to the point when said ribbon was fully unwound, the parts were in the position shownv in Fig. 1. As the unwinding of the ribbon is fully completed,the dog 17 is impelled by its spring into the notch 18 and the 14 is thereby `shifted to the position shown in Fig. 4. During the shifting of the lever 14 the lug 26 thereon, moving rearwardly, sets up a compression in the spring 29 which in turn exerts a pressure against the button 27 and thereby forces the arm 25 rearwardly. The arm 25 carries the lever 19 rearwardly until the projection 31 on the dog 30 enters the notch 32. The lever 19 shifts the cam 22 into inoperative position and the cam 22 into operative position; the

pawls

8, 13 thereby fall into operative position and the pawls 8', 13 are held in in operative position as shown in Fig. 4. The spool 6 is therefore in position to drive.

After the ribbon 1nas been entirely Afed onto the spool 6 through the medium of the feed mechanism heretofore described, the dog, 17 enters the recess 13', lever i4 is thereby shifted into the position shown in Fig. 1, the lug 26 moving forwardly with said lever 14 sets up a compression in the spring 28 which, bearing against the Lip-- A coiled spring 33 y pawls 8',

means actuated turned portion 24, shifts the lever 19 into the position shown in Fig; 1, and the projection 31 isthereby forced out of the notch 32' and enters the notch 32', and the parts are thereby-retained in the position shown in Fig. 1 during. the feed of theribbon from 6 to spool 6. It will be seen that when the vlever 19 has-been shifted to the position shown in Fig. 1, the cam 22 is thrown into inoperative position and the'pawls 8', 13 are allowed toassume their normal positions in engagement with the ratchet wheel 7', so that the spool 6 is adjusted to drive.

lt is to be understood that the form of our invention illustrated and described is merely for purpose of exemplification and that we contemplate any variations in construction within the scope of the following claims. We claim:

1. A ,ribbon reversing mechanism comprising a pair of spools provided with recesses in the hubs thereof and a ribbon connected thereto, means for driving said spools, a pair of dogs adapted to alternately enter said recesses, a pair of coiled springs, means connected with said dogs for alternately setting up compression inv said springs, and means actuated by the ycompressed springs for alternately shifting the drive of said spools.

2,. A ribbon reversing mechanism comprising a pair of spools having a ribbon connected thereto, means for driving said spools, a pair of cams adaptedv to throw said driving means into and out of engagement` with said spools, aidouble-armed lever connected to said cams, a pair of coiled springs, mechanism connected with said spools and with said lever for alternately compressing said springs when the ribbon is alternately unwound from said spools, and by the compressed springs for alternately shifting said cams.

3. A ribbon reversing mechanism comprising a pair of spools provided with recesses in the hubs nected thereto, means for driving said spools, a pair of dogs adapted to alternately enter said recesses, a pair of cams adapted to throw said driving means into and out of engagement with said spools, a double-armed lever connected to said cams, a pair of coiled springs, means connected with said dogs and with said lever for `compressing said springs when the ribbon is alternately unwound from said spools and means actuated by the compressed springs for alternately shifting said cams.

A ribbon reversingl mechanism comprising a. pair of spools provided with recesses in the hubs thereof and a ribbon connected thereto, a pair of dogs adapted to alternately enter said recesses, a `pair coiled springs, a double-armed lever connected with said dogs and adapted to althereof and a ribbon conternately compress said springs and means actuated by the compressed springs for alternately shifting the drive of said spools.

V5. A ribbon reversing mechanism comprisingv a pair of spools provided with recesses in thehubs thereof and a ribbon connected thereto, a pair of dogs adapted to alternately enter said recesses, means for driving said spools, a pair of cams adapted to throw said driving means into and out of engagement with said spools, a double-armed lever connected with said cams, 'a pair of coiled springs connected with said double-armed lever, a second double-armed lever connected with said dogs and adapted to alternately means actuated by the compressedfsprings for alternately shifting said cams.

, 6. A ribbon reversing mechanism comprising a pair of spools provided with recesses in the hubs thereof and a ribbon connected thereto, a pair of dogs adapted to alternately enter said recesses, means for driving said spools, a pair of cams adapted' to throw said riving means into and out of engagement with said-spools, a double-armed lever connected with said cams, said lever being provided with an extension, a

press said springs when the ribbon is alternately unwound from said spools, means actuated by the compressed springs for alternately shifting said cams, and a springpressed retaining dog adapted to alternately c'o-act with said notches to hold said cams in shifted position during the feed of the ribbon in one direction.

7. A ribbon feed and reversing mechavnism comprising, in combination with a universal bar, a pair of levers engaging said ar, a. pair of actua-ting pawls pivotally inounted on said levers, 'a pair of ratchet wheels normally engaged by said pawls, a rotate with said nected thereto, a pair of alternately setting up compression in said springs when the ribbon 'is alternately unwound from-said spools, and cams actuated by the compressed springs for alternately throwing said pawls into and out of enga-gement with said ratchet wheels.

S. A ribbon feed and reversing mechanism, comprising, in combination with a universal bar, horizontally-oscillating levers engaging said universal bar, pawls actuated by said levers, ratchet wheels actuated byv said pawls, ribbon reels mounted to rotate with oscillating lever said lever, a second oscillating said ratchet wheels and provided with notches, pawls for engaging said notches, a centrally-pivoted leveri having two arms and carrying said last-mentioned pawls, a second centrally pivoted yrlever, `springs for y from the first-named transmitting energ to the last-named centrally-pivoted lever centrally-pivoted lever, notches in saidv lastnamed centrally-pivoted lever, a dog for engaging said notches, and cams'actuated by said last-named centrally-pivoted lever.

9. A ribbon feed and reversing mechanism comprising, in combination with a universal bar, horizontally-oscillating 'levers carrying pawls and actuated by said bar, ribbon reels actuated by said pawls and provided with notches, a centrally-pivoted lever carrying means for engaging said notches, a second centrally-pivoted -lever carrying means for engaging said firstnamed centrally-pivoted lever, and cams oscillated horizontally by said, second-named lever.

l0. A ribbon feed and reversing mecha.- nisin comprising reels, means for revolving said reels, a centra-lly-pivoted, horizontally actuated by said reels, a second oscillating lever, spring for actua-ting said second lever, said springs being actuated by said first lever, and means actuated by said second lever for engaging and diseiigaging said reel revolving means.

1l. A ribbon feed and reversing mechanism comprising reels and means for revolving said reels, an oscillating lever actuated by said reels, springs actuated by said level', an oscillating lever actuated by said springs, a bar having notches, pawl for engaging said notches, said bar having a. substantially straight surface between said notches whereby said bar may move easily when said pawl is forced out of one of said notches.

lf2. A ribbon feed and reversing mechanism comprising reels, means for revolving saine, an oscillating lever actuated by said reels, springs adapted to be compressed by lever adapted to be actuated by said springs, means for retaining said second lever until one of said springs is sufliciently compressed, horizontally-oscillating cams adapted to move said revolving means into and out of operation, said cams being actuated by said second lever.

In testimony whereof we have signed our naines to this specification in the presence of two subscribing witnesses.

. \ALRAH B. EDWARDS.

, FRANK K. RUSSELL. ll'itnesses DnLwiN B. CARR, P. B. Aiiiiixc'rois.