US930730A

US930730A - Type-writing machine.

Info

Publication number: US930730A
Application number: US49307709A
Authority: US
Inventors: John Joseph Cooper
Original assignee: Underwood Typewriter Co
Current assignee: Underwood Typewriter Co
Priority date: 1909-04-30
Filing date: 1909-04-30
Publication date: 1909-08-10
Anticipated expiration: 1926-08-10

Description

mandooran.

TYPE WRITING MACHINE.

APPLICATION FILED APR. 30, 1909.

' BSKEETS-SHEET 1.

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l 51 Witnesses." I [nven lorr J. J. 0001mm.

TYPE WRITING MACHINE.

APPLICATION FILED APR. 30, 1909.

930,730. Patented Aug. 10,1909;

In vn for:

Wilnesses:

meme

i may 001mm;

the K'i'ng i ifi treat liritainJ re stain in t e cit oft'London "l ln land have i I 7 b. 7

iiii'en-fetlft taiirnew-and useful Improveiti Typ'e-Wr'i'ting Machines, "of which, the '"folloiiii ng is a spee'ifieation.

This ihfen'tion relates tdty'pewriting inachinett ieh are "especially constructed" to faeilitiite the writing of bills and siniul-. tane'oiisly i eeording'lthein :in a m nner coinnionly knoytfi'i as Condensed charging. i

Provisional application forLetters Patent itrQYeat Britain onthisinvention was filed July21,19(j{5, No'."15,441;0f 1 908} and coinplete specification was filed thereon January- 21,1909, "1. By nieaitsfot the usual eondensedbillin'g attachment, the rotary platen ofthetypewriter, after one .b'ilt'hasbeen Written and withdra\vn,'n1ay be given an idle backward rotatioirto an extent corresponding to the depth of 'the printed heading 0n the bill and after the snhsequ'ent ineertion oi afresh an. t e nae ybefl r ed r-w re,

' ds on for writingjttie first line;

whereby the carbon? copies of sire billsf are'written in Close order upon'jthelong record sheet, whiehren ains in the machine. 'This spee ial backward and forward Jrotation of the platen is usually effected a crahli, which rotatek about the platen pl aylng between 'stops p1'()\1ded r pen platen fra'mel The rotationofthis crank 1$"llllllt(itl to little less thanfan entir revo ltition'; but iii praetice'this ie fo u nd suflicientjto r ordinary. bill heads.

. fherethe;:depth of he printed 'ian'tioit. ofthe bill head exceeds tlie cire-innlei h ceof the platen eandit consequently essarv.

the prete e; tnrgirbackward]; more than amend erevol itioii tjba ,single striikehit has an an entire reyolnthe rotationof the platemdriying V e] f, t;hrougl,r more R than 1 an; ent re .revoluttonaat one s,trolie, s( tlia tnt may be connected directly to the platenfthns avoidmg the necessity of einplw ing gearing; and

' rYPmWRITmG MAcHmia.

nf tha't l], Joint Josnrri"Qoornn.

titifon will; turn the or Lennon; ,NGLANJ); ASSIGNOR 'ro nhonmroon trrrmrnrrnn {CORPORATION or NEW JERSEY.

Letters Patent. Patented Aug. 10, 1909.

Ito provide relatively adjustable stops for limiting the throw of the crank.

in carrying out the invention, provision isniade for guiding the crank by means of a helieally slotted drum, said drum fixed to theplaten frame and inelosing the platen aide, and said crank projecting out. through the slot. The axle and crank are movable in the direction of the platen axis, so that as the crank is'revolved it may also be guided in axial direction, and may turn either less or more than an entire revolution bel ore'it is arrested by a stop which is adjustable -ali ng the helical slot.

The crank is normally disconnected from theplaten, and is provided with a pawl or dog, which, at. the beginning of the movement or in other words, the crank is'enabled. during its tirst revolution. to pass by said stop; while the latter may be also adjusted along the helical guiding slot to limit the crank stroke to less than an entire revolution. at

will.

y In the act-ompartying drawings. Figure l is an end elevation of the plat n l'ran e ol an fi'l mlerwooil lront strike writing machine. showing the present improvements applied theretog the platen-rotatinsr crank shown in its normal position. Fig. 1 is a planet the i ei-hanism seen at Fig. l. and illustrating in section the splined connection o'li the platen axle to the platen. Fig. I, is a cross section -vakcn at about thetlinc .r of Fig. .2. crank being seen dist-onnrcted treat the platen. Fig. l is a l'rau' lnentary \ltW simi- Ihrrdo'lfig. ll, but. showing the rank connectedto the platen. l i zj. 5 is a --seetional plauishowing the crank in position about midway between normal position and the adjustablecrank stop.

()nl v one end of the platen frame 14- is shown, said frame being at? well known construction. l-h said frame is rotatahly mountat one stroke. bet-ore em'ountering the stop,

ed an axle if) for a platen 15 provided with the. usual .core if)". The axle and platen are rotatable at any time by means of the usual thumb wheel l5 fixed on the end of the platen axle. Special rotation of the platen for purposes of billing is effected by pulling a handle 17 provided upona crank 18.

The crank hub 18 is loosely confined between a'collar 2t) and a notched or toothed wheel 36, both fixed upon the axle 1a; the

' crank being rotatable relatively to the wheel,

notch 3st formed in the internal periphery 2O 7 of a fixed drmn d0. Said drum has at its ends heads d1 fitting loosely upon the platen axle lo'gand it is connectedby a link T6 to the platen frame end ll to prevent rotation of the drum. The-drui'n incloses the wheel 36; and the crank 18 projects out through the helical slot 42 formed in the body of the drum. This slot guides the crank as the latter is rotated, and causes it to follow a helical path. Wherethe width of the slot is great, a block 42 may be fixed upon the crank, to fill the space between the walls of i the slot. i

At the beginning of the forward movement of the crank from the position at Fig.

3, the projection 31 of the pawl rides along the cam face 31 formed in the wall 35, and is forced by said cam face inwardly toward the axle 15, and thereby the pawl or dog tooth 32 is forced into engagement with one of the notches in the wheel 36. During the subsequent turning of the platen, the pawl pin 31 rides along that portion of the inner wall 35 which borders on the helical slot 42 and forms a guide for maintaining engagement of the pawl with the wheel. The crank is thus held connected to the platen until the crank returns to initial position, when the spring 33 intercepts the pawl pin 31 and snaps the latter up into the notch 34, thus disconnecting the pawl from the wheel; the wall 34 of said notch form ing an abutment or stop to determine the initial position of the crank 18. The axle is splined to the platen by means of pins 43 carried upon a cross-arm 44 which is fixed to the platen axle; said pins fitting in perforations 43 provided in a head or disk 43. which is attached to the platen core 15 Fig. 2-. The movement of the crank '18 away from initial position is limited by a stop 45, fitted in the helical slot at) and adjustable therealong to limit the stroke of the crank to either less or more than an entire revolution. Attached to the stop a plate 47, which carries a pin 21 to fit in any one of a series of pcrforat-iens formed in the periphery of the di'mn along the edge of the helical slot 42; the portion of the drum which is provided \vithahesc perforations constituting a helical rack. A spring 23 carried in a housing 2t presses the pin 21 into any selected opening or notch 22; and at any time, a button :29 provided upon the pin may be employed to pull out thepin and set the stop to a different position along the helical slot. The perforations .2 are located at angular intervals agreeing with the itch of the teeth to the wheel 36; said wheel having the same number of teeth as the line-space wheel (not shqh'nhi which 86 forms a part of the usual line-spacing mech anism for the. platen. Thus it will be seen" that the crank 18 may swing freely in the helical slot between the stops 34 and a5.

each stroke of the crank being, if desired,

much greater than an entire revolution; the endwise play of the axle 15 accommodating the helical movement ofthe crank and wheel 36,"and the helical movement of the crank enabling it to pass once by the stop 45,

whereby it is subsequently arrested. On returning, the helical course of the crank enables it to pass once by the stop. 34: (see. Fig. 5) by which it is finally arrested.

Variations may be resorted to within scope of the invention.

Having thus described my invention, I claim:

1. The combination with a revoluble platen,

the

a crank for rotating the platen, and a stop 103 to determine the normal position of said crank, of a second stop adjustable relatively to the first to limit the stroke of said crank to either more or less than an entirerevolut onat will; said second stop adjustable 105 about the axis of rotation of said crank, in the path of the latter.

2. The combination with a revoluble platen, of a crank normally disconnected from the platen, means to connect the crank to the platen and maintain such connection during more than an entire revolution of said crank at one stroke from normalposition, and a stop adjustable to limit the stroke of said crank to either more or less than an'entire revolution at will.

3. The combination with a revoluble platen, ofa crank normally disconnected from the platen, means to connect the crank to the platen and maintain such connection during more than an entire revolution of saidcrank at. one stroke from normal position and also during the movement of sand crank back to normal position, and a stop adjustable to limit the stroke of said crank to either more or less than an entire revolution at will.

4. The combinationwith a revoluble platen, of a toothed w-heel connected thereto. a crank rotatable about the platen axis but normally disconnected from the toothed wheel and platen, means to connect said crank to the toothed wheel and maintain such connection through more than an entire revolutlon of.

the crank, and a stop adjustable to limit the stroke of the crank to either more or less than an entire revolution at will.

5. The combination with a revoluble pl aten,

, either more or less than'an entire revolution at will, and means to disconnectthe crank from'the toothed wheel upon the return of the crank to normal position;

(5. The combination with a'platen and a platen frame, of a crank for rotating the platen, a stop adjustable to limit the stroke of the crank to either less or more than an entire revolution at will, and a 'guide'for' said crank, said'guideconstructed to permit the crank to pass said stop during the first revolution of the crank.

7. The combination with a platen and a platen frame, of a-"crank for rotating the platen, a stop for the crank, and a: guide constructed to guide the crank past said stop during one revolution and into engagement with said stop during the subsequent revolution.

8. The combination with a platen, of a.

crank for rotatin the platen, a stop'for said crank, and a coi ed rack along which said stop is adjustable to limit the stroke of the crank to either less or more than an entire revolntionat. will i). 'lhe'ctmxbination with a platen 'and av platen frame, of a crank connected to the platen and movable in the direction of the platen axis, a helical guide for said crank, and. a crank-stop adjustable along said helical guide.

10. The combination with platen, of a crank connected thereto, a helical guide for said crank, a stop for said crank, and a helical rack along which said stop is adjustable.

11. The combination with a latena'nd a platen frame, of an'axle splined to theplaten, a crank fixed upoirsaid axle, a helical guide fixed upon the platen frame around said axle for gmding 'said'crank, and a stop for said crank, saidstop adjustable along said helical guide. i

12. The "combination with a platen and a platen frame,'of a crank connected to the platen and movable in the direction of the platen axis, a helical guide for said crank, a crank-stop adjustablealongsaid helical guide, a el,mnmectedto the platen and movable'axially together with said crank, a pawl connected to the crank for engagement with said wheel, and means to hold the )a'wl in engagement with the wheel while the crank turns helically to and fro.

13. The combination with a platen and a platen frame, of a crank connected to the platen and movable in the direction of the platen axis, a helical guide for said. crank, a crank-stop adjustable along said helical guide, a wheel connected to the platen and movable axially together with saidcrank, a pawl connected to the crank for engagement with saidwheel, means to hold the pawl in engagen'ient with the Wheel while the crank turnshelically to and fro, and means for cliectmg disconnection of the crank from the wheel upon the return of the crank to initial position. v

14. The combination with a platen and a platen frame, of a toothed wheel connected to the platen and movable axially thereof, a crank, a pawl upon said crank to engage said toothed wheel, saidcrank movable together with said wheel along the platen'axle, a helical guide for said crank, and a crank- :etop adjustable along said helical guide.

15. The combination with a platen and aplaten frame, of a toothed wheel connected to the platen and movable axially thereof, a crank, a pawl upon said crank to engage said toothed wheel, said crank movable together with said wheel along the platen axle, a helical guide for said crank, and a rrank-stop adjustable along said helical guide; said pawl having a projection torun upon an inner periphery ofthe helical guide, to maintain the engagement of the pawl with the Wheel.

16. The combination with a platen and a platen frame, of a toothed wheel connected to the platen and movable axially thereof, a crank, a pawl upon said crank to engage said toothed wheel, said crank movable together with said wheelalong the platen axle, a helical guide for said crank, and a crankstop adjustable along said helical guide; aid pawl having a projection to run upon an inner periphery of the helical guide, to

gaged from wheel and the crank is arrested.

17. The combination with a platen and a platen, a notched wheel fixed upon said axle,

a crank loose upon said axle but confined to move axially therewith, a pawlor dog upon said crank normally out of engagement with said wheel but movable into engagement therewith, a drum lixcd lo the platen frame and hailing a helical slot through which said l crank projects and whereby it is guided, said pawl having a. projection to run upon the inner periphery of said drum at said slot, to maintain the pawl in engagement with said wheel. and a stop for the crank.

18. The combination with aplaten and a platen frame, of an axle splined to the platen. a notched wheel fixed upon said axle, a (-rank loose upon said axle but confined to move axially therewith, a pawl or dog upon said crank normally out of engagement with said wheel but. movable into engagement therewith, a drum fixed to the platen frame and having a helical slot through which said erank projects and whereby it is guided, said pawl having a projeetion to run upon the inner periplwry of said drum at said slot, to maintain the pawl in engagement with said \vheeL a helical series of openings being provided along said drum adjacent to said slot, and a stop in said slot and having;av-loeat i-ng pin to engage any of said openings, for arresting said t-rank and platen at a predetermined point either before or after the rranl-z turns the platen through an entirev re\' lution at one stroke.

J()ll. N JOSEPH COOPER.

\Vi t nesaes:

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/ F. L. RANI).