US1680230A

US1680230A - Typewriting machine

Info

Publication number: US1680230A
Application number: US119542A
Authority: US
Inventors: Edward G Rowley
Original assignee: Underwood Elliott Fisher Co
Current assignee: Underwood Elliott Fisher Co
Priority date: 1926-02-27
Filing date: 1926-06-30
Publication date: 1928-08-07
Anticipated expiration: 1945-08-07

Description

E. G. ROWLEY TYPEWRITING MACHINE Au 7, .1928. mama Filed June 50. 1926 z's t t l [/7 Men for! Aug. 7, 1928.

E. G. ROWLEY TYPEWRITING MACHINE 2 Sheets-Sheet Filed June 30, 1926 1/71/2/7 far.

Patented Aug, 7, 1928.

stares insane earners" enrich.

. EDW'ARD G. BOXVLEY, OF BELLEVILLE, JERSEY, ASSIGNOR TO UNDERWOOD ELLIOTT EISHER COMPAHY, NEW YORK, N. Y., A CORPORATION 01? DELAW'ARE.

rYrnwnrrme MACHINE.

Application filed June 30,

. those of the portable class, and more par- Ill ticularly to novel means for controlling the movements of the paper-carriage and for line-spacing the work-sheets. v

The machine is enclosed in a felt-lined casing having a displaceable cover with a glass. sealed sight opening; the "front wall of the casing having an opening through which the keyboard protrudes.

The carriage may bereturned after each line of typing by means of an exterior handle pivoted upon the casing at one sideof the keyboard. The handle extends to the in terior of the casing, to revolve an interior pinion and drum, the latter having a cord, one end of which is fast to the line-space lever acting upon the platen, so that, without opening the cover, the platenomay be returned to begin a new line, and at the same operation it may be automatically linespaced.

It is often desired to line-space the Work sheet without opening the cover, while the carriage is at different points in its range of travel, or in other words while thecarriage remains stationary at any point. Heretofore, the cover has been opened for this operation, and the rotation of the platen has been thereupon effected by means of a linger-wheel, which is slow. According to one of the features of this invention, the space-bar at the keyboard of the typewriter maybe held down for the purpose of looking the carriage against movement. At the same time said handle may be operated, and the line-spacing lever of the typewriter may be vibrated as many times as desired, to rotate the platen to the required extent, without moving the carriage, and without open ingthe cover. V r

Another feature of this invention relates to novel means at the exterior of the casing for releasing the carriage in order to permit the unobstructed control thereof by. means of said carriage-return handle, for both ad- Vance and return travel of the carriage. To this end, there is provided adepressible button at one side ofthe keyboard, which is effective by means of 'a special linkage to disconnect the letter-spacing rack from its associated escapement wheel, I s

It will be understood that the return spring with which the-line-spacing lever is 1926, Serial No. 119,542.

provided is made stronger than usual, to permit the movement of the carriage without line-spacing the work-sheet. Ordinarily, however, it is desired to return the carriageand to line-space the work-sheet all in one operation, and, in this case, upon reaching the end of the return stroke of the carriage, as determined by the marginal stop, the line-spacing lever spring will yield under the direct pull of its operating cord, to swing the handle and line-space the worksheet.

Provision is made for the complete manipulation of the carriagefrom the outside of the casing to thereby render the displacement of the cover unnecessary except to replace the work-sheet.

Other features and advantages will hereinafter appear.

In the accompanyin drawings,

Figure 1 is a plan of the sound-deadening casing, with the cover removed, showing the typewriter placed therein, and all the operating mechanism.

Figure 2 is a perspective, showing the means for releasing the letter-spacing rack and also the means for' locking the letterspacing wheel. 1

Figure 3 is a fragmentary perspective, showing the letter-spacing wheel in its locked position.

Figure 4e is a longitudinal cross-section in elevation, showing the carriage-return drum and means for releasing the carriage.

Figure 5 is across-section through line 55 of Figure 1.

TheUnderwood four row portable machine is provided with a traveling carriage 10, upon which a platen 11 is rotatably mounted by means of a shaft 12. The platen is struck at the front thereof by type-bars 13, which are swung upon depression of keys 14:. At each key depression, the carr age is letter-spaced by means of a universal bar and other mechanism, not shown, but actuating upon an escapement wheel 15, which is operatively connected to the carriage by m'eansof a pinion 16 and a rack 17. The carriage is slidably mounted on anti-friction bearings 18, sliding on tracks 19 supported by a frame 20. i

I To return the carriage from the outside of the casing, there is provided a handle 21 pivotally mounted on a shaft 22, supported on a bracket 23, fast by means of screws 9A on the shaft 22 upon depression of the handle, and engages with a pinion 27 fast toashaft 28 rotatably mounted, on the bracket 23; The shaft 28 carries a drum 29 fast thereto, upon which a cord 30 is wound. One end of the cord is fast to the drum, while the other end is fast to a line-spacing lever 31 by means of an extension 32. The

line-space lever 31 is operatively connected,

bymeans' of a pawl 33, to a line-space wheel 34. lVith this arrangement not only is the carriage returned.

upon depression of the handle 21, but the platen is also line-spaced.-

' In order that the carria e ma be )OSltioned to the printing point,'there is provided a scale 35, which co-operates with a pointer 36 carried by the handle21. .There is also provided mechanism for swinging the rack 17 out of engagement with the pinion 16. Said mechanism may include a, button 37mounted at the end of a shaft 38, which shaft is slidably mounted on the front wall of the casing and actuates a bell-crank 39 mounted on a support 40' by means of a shoulderscrew 41. The bell crank 39 carries a link 42 pivotally mounted'thereon, which link extends'sidewardly and is operatively connected tea lever 43. Said lever is supportedby a bracket 44 and is pivotally mounted on 'a stud 45 fast to the bracket,- the bracket in turn being fast to a lower extension of the track 19 by means of rivets 46. The lever 43 carries a roller 47 at one end thereof, which is rotatably mounted on a stud 48 fast to the lever. Said roller engages with the rack 17 in a manner to swing the rack on supporting studs 49, and thereby disengage it from the pinion 16.: The support'40 may be secured to the base-board by means of a nut 50.

Sometimes it is desirable to line-space the work-sheet one or more lines withoutlreturn ingthe carriage. In this invention advantageis taken of the factthat the carriage is returned by means of the line-space lever 31 which is also effective to rotate the platen.

According to this feature of the invention,

which is slidably mountedat its rear end. upon a stud 55. Said link 54 extends upwardly at 56 and engages a locking pawl 57,

which is forced in the path of teeth 58 of the escapement wheel 15, as shown in Figure 3,

to thereby prevent rotation thereof. Said pawl is pivotally mounted upon a pin 59 fast to abracket 60 andis' normally held 111 its ineffective pos1t1on, as shown in Fig ures- 1 and 2, by means of a spring 61. The

bracket mav' be secured to thetrack 19.

To soften the noise arising from the operation of the machine, the same is enclosed by'a sheet-metal wall 62, which is fast to the base-board by means of screws The wall is lined with sound-deadening material 64, the'rear wall being in turnlined with a sheet-metal plate to prevent the trailing edge of the work-sheet from engag ing the rough surface of the sound-deadening n'n'zterial. Said plate is preferably curled at the bottom thereof toform a pocket as shown in Figure; 5. The machine is enclosed at the top thereof by a cover 66 pirotallymounted. on hinges 67. Said cover has anop'ening 68 sealed with a glass panel 69 130 render the machine visible from theoutside'of the casing and to prevent the emission of sound through the opening.

with sound-.

through-a hole74 and is locked in place by sliding the cord into a slot 75.

The machine may be secured to the "baseboard 25by means of screws in the usual manner. In orderphowever, that the baseboard may not be vibrated by the noise ensuingfrom operating the machine, there may be provideda felt pad 76 secured to the base-board and having depressions for receiving feet 77 of the machine.

"lt will be understood that in order to linespace the work-sheet 'while the cover is closed but without'returning the carriage, the same is locked by holding down the space-bar 51, which throws the locking pawl 57 in the path of the teeth 58 of thewheel 15 to prevent rotationthereof. WVhile the space-bar is'held down, the handle 21 may be vibrated to rotate-the platen repeatedly.

The carriage is normally held stationary by means of pawl 78pivoted on-stud59. The pawl detains escapement-wheel 15,-

which is rotatable by springdrum 79 con .nected thereto by tape 80. The escapementmechanism described in the application of lV.-A.'Dobson, No. 63,370ffiled-October 19, 1925 is illustrated. V 'l ariations-may be resorted to within the scope of the invention, and portions of the improvements may be used without others. 'I-lavingfthus described my invention, I claim: i V A soi'ind-deadening casing for a typewriti-ng machine having a carriage; escapement mechanism therefor, a platen, a lines'pacing lever therefor, means for simultane ously' line-spacing and returning-the'ran" riage, and means for locking the carriage from the outside of the casing in a manner to prevent the sliding movement of the carriage upon operation. of the 'line-spacing means.

i 2. In a sound-deadening casing for a typewriting machine, the casing having a body part and a cover therefor, the typecontrolled by a'carriagereturn lever for ac tuatinc the line-s acin lever of the t ewriter.

4.1n a sound-deadening casing for a typewriting machine, 'thecasing having a body part and a cover therefor, the typewriting machine having a carriage, a platen and a line-spacing mechanism therefor, means for-line-$pacing theplaten, said means including a carriage-locking mechanism controlled byrthe spacing bar of the typewriting' machine, means for operatively connecting; the line spacing mechanism with a handle ln'otruding to the exterior of the casing, said last-mentioned means including a revolubly mounted drum having a cord wound therearotuid, one end of the cord being fast to the drum, the other end or" the cord being fast to'the line-spacing mechanism, and means controlled'by said handle for rotating the 'drum 5. Means for releasing the carriage of a typewriter in a sound-deadening casingythe typewriterhaving a letter-spacing rack and a letter-spacing wheel therefor, said means including a depressible button collapsibly mounted on the wall 0 5 the casing, bellcrank controlled by said button and a link for operatively connecting said bell crank with a rocking arm pivotally mounted on a fixed support, said rocking arm having a roller at one end thereof, said roller being effective to swing the rack out of engagementwith its associated gear. 7

6.1K sound-deademng.casing for a typewriting'machine having a carriage,a revoluble platen, a line-space lever therefor, and a letter-spacing mechanism including a space-bar, the casing completely enclosing the machine except for the keyboard, means for returning the carriage from the outside of the casing, and means associated with the-letter-spaeing mechanism and controlled by the space-bar for locking the carriage and preventing its displacement to thereby permit the line-spacing of the platen upon operation of the carriage-returning means.

7. in a sound-deadening casing for a typewriting machine, said casing completely enclosing the typewriting machine except for the keyboard, the typewriting machine having a carriage, an escapeinent mechanism therefor, platen and a linespacing lever therefor, means outside of the casing for simultaneously linc spacing the platen and for returning the carriage, said means being operatively connected to the linespacing lever, and means for locking the carto thereby permit the line-spacing movement of the lever while preventing the return of the carriage.

8. In a sound-deadening casing for a t wvi-iting machine, said casing completely enclosing the typewriting machine except for the keybeare, the typewriting machine havin a carriage, an escapement mechanisn therefor, a platen and a line-spacing; lever therefor, means outside of the casing for simultaneously line-spacing the platen and for returning the carriage, said means being operatively connected to the linespaci lever, and meansfor locking the carrfagg'e to thereby pe mit the line-spacing movement ct the lever while preventing the return of the carriage, said lastcnentioned means including a locking pawl controlled by the space-bar ot' the typewriting machine, said locking pawl interposing the teeth of the escapement wheel of the typewriting machine upon depression of the space-bar to thereby prevent rotation of the wheel.

9. In a sound-deadening casing for a typewriting machine, said casing completely enclosingthe typewriting machine except for the keyboard, the typewriting machine having a carriage, an escapement mechanism therefor, including a pinion co-operating with a rack pivotally mounted on the carriage, a platen and a line-spacing lever therefor, means outsioe of the casing for p0 sit-ioning the carriage, said means including a carriage-return handle operatively connected to the line-spacing lever, and means for releasing the carriage, said last-mentioned means including amanual control outside the casing at one side of the keyboard and linkage for operatively connecting said control with the escapement mechanism in a. manner to disconnect the latter from the carriage by swinging, the rack rearwardly on its pivot out of engagement with the pinion by rearward pressure thereon, thereby permitting accurate positioning of the platen w'thout opening the casing.

10. In a sound-deadening casing "for a typewriting machine having a carriage and an escapement mechanism therefor, the esan. escapement mechanism therefor, the es- .capement mechanism including an escapement wheel having a pinion associated therewith, the carriage having a rack arranged for engagement with said pinion, said rack being resiliently held in its efiiective position inengagement with the pinion, means controlled by a depressible button, located externally of said casing, for rendering said rack ineffective, safd means'including, in addition to said button, a bell-crank operatively connected thereto, and a link' for operatively connecting said bell-crank to a fixed rocking arm contacting with said rack 1n a manner to push the rack out of engagement with the pinion upon depression the button. r

12. In a sound-deadening casn'g for a typewrit-ing machine having a carriage and an escapement mechanism therefor, the escapement, mec-hamsm lllcllldlflgflll escapement wheel having a pinion associated therewith, the carriage having a rack arranged for engagement with said pID OIl, said rack being resiliently held 1n its BHCCtlVG position in engagement with the pinion, means controlled by a depressible button, located externally of said casing, for rendering said rack inefieetlve. said means ncluding, In addition to said button, a bell-crank operatively' connected thereto, and a link for operatively connecting said bell-crank to a fixed rocking arm having a roller at one end thereof," the roller contacting with the rack in a manner to swing it out of engagement with the pinion and to hold itin its inefi'ec tive position for the full length of travel of the carriage."

13. vA typewriting machine having a carriage, a platen, letter-spacing mechanism for saidplaten, a space-bar, andmeans operated upon, the depression of said space-bar for locking said letter-spacing mechanism against yielding to the right. 7 V a 14. A typewriting machine having a carriage, a platen,,letter-spacing mechanism for said platen including an escapementwheel,

a spacebar, and means forlocking said letter-spac1ng mechanism upondepression of saidspace-bar, including a ,dogmonnted on the machine-frame and movable to engage said escapement-wheel, and an operative connection between said dog and said spacebar. r

15 In a typewriting machine having a sound-deadening casing-completely enclosingthe same except the keyboard-extension thereof, said typewriting machine having a carriage, a platen and letter-spacing mechanism therefor, includinga rack, and a carriage-return lever, the combination of means for releasing said carriage from said letterspacing mechanismymeans for returning said carriage, and independently-operable control means forsaid carriage releasing and return ng means located outside of said casing and operating through said releasing and returning means, respectively, upon said rack and npon said 'carriagemeturn lever to permit accurate positioning of the platen with respect to the printing point of the machine without opening the casing.

' EDWARD G.