US1430208A - Typewriting machine - Google Patents

Description

E. E. BARNEY.

TYPEWRITING MACHINE.

APPLICATION FILED MAR. 1o, 1920.

Patented Sept. 26, 1922;

. T i s WIWI-15555 f/ZM M.

Patented Sept. 226, i922.

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EDW'IN E. BARNEY, 0F .liTTARK, NEW' J'ERSFY, ASSIGNOR TO REMINGTON TYPE- V/'RTER COMPANY, Oi ILIN, NRW 'YGRL A CORPORATON 0F NEXV YORK.

TY-PERTING' MACHINE.

Application led March 10, i920. Serial No. 364,644.

T 0 alii whom t may cof/merit Be it known that I, EDWIN E. BARNEY, citizen of the United States, and resident of Newark, in the 'county of Essex and State of New lJersey, have invented certain new and useful Improvements in Typewriting Machines, of which the following is a specification.

My invention relates to typewriting machines and more particularly to the main` spring and associated parts for propelling the carriage.

Among the objects of my invention are to make the main spring` assembly as a de tacliable unit; to provide a construction whereby the said unit can be removed from the machine without losing the tension of the main spring; to provide a construction whereby in case of breakage or slipping of the tape the spring will be automatically locked against unwinding; to provide an easy and positive means for attaching the main spring to its box or drum in suoli a way that it can be very readily and easily removed and replaced with a new one; to provide a construction in which the winding up of the spring to put it under tension is very simple and easy; to provide along bearing for the main shaft; and generally to provide a simple, good and eflicient construction'and one easily assembled and taken apart for repairs.

Tothe above and other ends my invention consists in certain features of construction and combinations and arrangements of parts all of which will befully set forth herein and particularly pointed out vin the claims.

.in the accompanying drawings in which.'

my invention is illustrated,

Figure l. is a rear elevation of the band. wheel and some of the associated parts, some parts being shown in section on the line fc-m of Fig. 3.

.Figure 2 is a front elevation of the spring drum or box and some of its associated parts, parts being shown in section on the line jz/ y* of Fig. 3. A

Figure 3 is a front to rear vertical sectional view through the axis of the spring shaft and showing fragments of the frame and carriage of the typewriter.

Figure 4 is a perspective view from the rear of the spring drum or box and the spring cage, the latter shown removed from the box.

. shown.

ing machine can be of any suitable sort,

my invention being applicable to such inachines generally. in the drawing I have shown a frame part l, this being in the na.- ture of an upper cross bar of the main frame of the typewriter, the forward part of the cross bar being shaped into a stationary rail 2 grooved for the reception of bearing balls which co-operate with a carriage 4, a fragment of which is conventionally Said carriage comprises a longitudinal bar which may have ball bearing grooves in its opposite edges and whichis here shown set .at an inclination of about 450. As far as my invention is concerned, however, both the frame and the carriage can be of any suitable construction.

rlhe vmain spring mechanism or assembly is made as a detachable unit. .lt is `all supported by a hanger or bracket 5, consisting of a bar of sheet metal bent into an inverted U-shape and detachably secured to the under side of the cross bar l by ineansof two screws (i. The spring drum and all of .its associated parts are mounted on this hanger and are put on tothe machine and taken cti as a unit by means of the screws 6.

Said shaft ishere shown ras made of re'.

duced diameter at its middle part, its full sized ends being ournaled in a tube or sleeve 8 inserted in round holes in the depending arms of. the hanger 5. rlihe general construction is such that this sleeve does not need to be tight in the hanger but it is held against endwise motion toward the rear by means of a collar l() and set screw 1l. A motion ofit toward the front' of the ina chine is prevented by other parts of the mechanism as will hereafter appear.

T he shaft 7 has a band wheel or drum l2 rigidly mounted on itsforward end.r As

here shown the wheel 12 has a hub 13 fitting on a reduced part oit the shaft and said shaft is squared at 14: and passes through a hole of similar shape in. the end olifA the hub 13 whereby said hub is prevented 'from turning on the shaft. The extreme end 15 oit the shaft is reduced and threaded and a nut 16 holds the hub 13 in place. Said hub has a flange to which the wheel or drinn Yl2 is riveted at 17. Any suitable hook 18, ifig. 17 may be connected with the carriage 4L, and said hook may be connected with the wheel 12 by any suitable' `band or strap 20. ln the present instance and preferably this band is vconnected with the wheel through a certain locking device which will be 'fully described hereinafter.

The sleeve S projects a short distance to the rear oft the rear branch ot the hanger 5, the projecting end of the sleeve being turned down to a reduced diameter as indicated in F ig. 3 and on said reduced end of the sleeve there a-re mounted a springdrum, boi; or housing 217 a washer 22, and a ratchet wheel 23, this group oit' parts being all secured together' as by rivets 24. `rlihese three parts thus riveted together into one can be tightly mounted on the end of the sleeve, it desired, but this is not necessary. The ratchet wheel '23 is engaged by any suitable anchor pawl or detent 25, the one here shown being pivoted on a shouldered and headed screw 2G screwed `the convex part`27 o't' said drum and its inner end with the shaft 'l'. lith such a construction the spring could be put under tension by turning the drinn 21 and ythe tension would be retained by the detent andthe power of the spring would be communicated through the shaftt "i to the band wheel l2. l have7 however7 shown an improved construe tion which makes the removal of the spring and its replacement by a new one extremely easy and convenient. To this end the spring 28 is not connected `directly with the drum or'box 21 but is mounted in a detachable device or cage 30. This cage can olf course be variously constructed but the forni oll it shown in the drawings is a goed and convenient one for my purposes. lt consists ot a piece oit sheet metal cut out originally,7 with a series oi radially projecting arms 81 and said arms then bent back perpcmlicularly to the plane oit the metal so as to constitute a sort ol drum or cage or container tor the sprinO. The spring can be coiled up and insertcd in this cagej its outer end being connected with one oi' the arms 3l in any suit able manner. )is here shown the end ol" the spring is simply bent double and hooked over one or two ot' said arms. yllhis cage is very inexpensive and light and it is contemplated that the springs when manufactured shall each be mounted in one oi? these rages and kept in that way until it is desired to insert the spring either into a new machine or to replace an old spring in a used n1achine. The cage El() itsel'l is simply inserted into or is attached to the drum or wheel 21. The means shown in the drawings for this purpose are extremely simple and convenient. 'lhree oit the arms 31 are prolonged and each is cut out into a hook 232 and three slots 33 are cut in the web o t' the wheel 21. ll`he cage is inserted inte the drum with the projections extending into the slots :53 and the (cage is then slightlyr turned t ward the lett whereupon the slots 231 in the hooks :52 interlock with the web oi" the wheel 2i and positively retain the cage in place. rilhe slots Se are all cut in such a direction that when the spring is put under `tension the pressiire of said `spring tends to` hold the cage in its interlocking engagement with the drum. rThe web ot the cage llt) may have cut-outs iior the lingers of the operator to lacilitate insertion and removal ot the cage.

rlhe inner end ot the spring "can be connected with the shaft "I ina variety ot ways. Said shaft is here shown proif'ided with a permanent bnshingi slipped over its rear end and secinfed in place by means of a pin 3G one end ot which pin in Figs. 1 5 projects beyond the bushing Said bushing is made ot such thickness that it overlaps the drum 21 thus retainingv said drum on the end ot the lslceve t3 and pre'\.ientin; motion both oi2 the shaft l' toward the trout oi the rear ot the machine, once the mechanism is assenibled. in the Vorm or" 'the yiuwnton .shown in Aligs. 1*() the inner end o l the spring` 28 is connected in any ordinary way with :i

collar 37, iiig. 5. ils here shonn said collar is iformed with a hook 3S adapted to enter a hole in the inner end ot the spring and to interlock with it in a Jramiliar manner. The collar 37 has a longitudinal slot 40 and said collar is oi such diameter that it can be slipped over the bushing 35 and the slot Ll() will embrace thc projecting end of the pin 3G. YPrc'eiably the hole il at the center o'l` the cage 3() is o'lf a diameter only sliglitly greater than the bushing 235 and less than the external diameter-ot the collar 3T. As the cage is positively held in place it prevents said collar ZET 'from slipping oil'.

From the above description will be per ceived that the spring.rv assembled as it in its cage 30, can be almost instantly attached he machine and oi said sleeve toward i lil() to the machine by simply putting said cage in place with the collar 3T on. to the liiushing 35 and slightly turning the cage toward the left. It will also be perceived that as soon as this is done the spring can very easily be put under tension by turning the drum 21 toward the right until the desired tension is secured. It will also be readily understood that whereas I have shown the socalled drum or housing 21 in the form or' a drum having a cylindrical part 27 that said cylindrical part is not absolutely essential. It gives the machine a more pleasing appearance, protects the spring to some extent and is a pleasanter thing to take hold ot to put the spring under tension.

t will also readily be perceived that the hooks 32 could be made on the drinn or wheel 21 and the slots 83 or somek equivalent device in the cage 30. It will also be understood that, as far as the removable cage 30 is concerned, it is immaterial whether the drum 21 is stationary and the shaft 7 turns, or the reverse. The mechanism can be taken apart by removing the nut 16 and wheel 12, loosening the set screw 11, and drawing the sleeve 8 out of the hanger. iilhen the cage 30 is removed, the shaft T can be withdrawn from the sleeve 8, and the drum 21 and its ratchet 23 can then be slipped oli from the end of the sleeve.

In Figs. 6 and T I have shown a modified form of connection from the inner ond ot the spring to the shaft 7. As this shaft is slightly modified in shape in these ligures I have called it 7a. In this form of the invention the majority 0i parts including the cage 30 are or may be identical with those shown in the other figures but the bushing 35"L is shorter than the bushing 35 and the pin 36 does not project beyond said bushing. On the other hand the end of the sha it 7 is squared as shown at 42. In place of the collar 37 a collar er cap 41.3 is provided which tits over the bushing 35L and is :formed with anysuitable stud or h ook 1lele to interlock with the inner end oilZ the spring. The rear end ot said cap is closed and the end thereof has a square opening cut out to lit the squared end 42 of the shaft. This torni. o'l" the invention is somewhat more convenient than the other in this respect that the operator can see through the hole 45 and can thus somewhat more readily turn the drinn and spring until said hole matches with the squared end 4t2 in the act of putting the spring in place. Neither of the collars S7 and 4.3 is absolutely essential Aas the inner end oi the spring could interlock directly with the shaft T or bushing` and pin 3G it desired.

A. lock or detent to prevent unwinding ci the spring under certain conditions has been provided as hereinbetore mentioned. Detail construction o'l? this lock can be varied but I prefer the iorm here shown. A. stationary ratchet wheel 4.6, Figs. l and 25, surrounds the inner end oit the hub 13, preferably without touching said hub, and it is secured to the forward vtace ot the brazrket 5 by rivets 47, a washer 48 being preferably interposed to space the stationary ratchet wheel slightly away from the bracket. A pawl 50 or bell crank form is pivoted to the web of the band wheel 12 in position to engage the ratchet 4G and so that when it dees engage said ratchet the band wheel is locked against turning in a direction to unwind the main spring. As here shown, a hollow stud 51 projects rearward from the web of the wheel 12 to which it is staked or riveted. A pivot 52 is similarly secured to the front tace of the pawl 50 and projects through the hollow stud 51 and a screw 53 with a broad head screwed lengthwise into said pivot 52 prevents said pivot from moving rearward out of its bearing. The pawl 50. has an arm 54 extending radially outward from the pivot 52, and about in the plane oit the cylindrical part oit the wheel 12 this arm is bent at right angles forming a sort ot arm or lug 55 lying substantially in the cylindrical surfaceA of the wheel 12. The cylindrical part of' this wheel is cut away to accommodate the pawl asshown in Fig. l

:Forming two shoulders 56 and 5f? which" limit the rocking motion of the pawl about its pivot 52. The strap 20 hasa loop on its end which is hooked over the lug 55 so that the said strap is connected with the wheel 12 through the pawl; and when the parts are under tension as shown in full lines in Fig. 1 the pull on said strap holds the pawl up against this shoulder 57 and out oit engagement with the ratchet 46. A spring 58 connected at one end to al pin 60 on the pawl 50 and at the yotherend to a pin G1 on the wheel 12 tends to throw the pawl into engagement with the ratchet but as this spring is much weaker than the carriage spring' it is readily vstretched by the latter and tie pawl under normal conditions res mains always in the position shown in VFig. l out of engagement with the ratchet 46. ll. however, the strap 2O should breakas indicated. in broken lines inIli 1 the spring 5R would quickly draw the arm 5a back against the lshoulder 56 and throw the pawl into the stationary ratchet as shown in broken lines and thus stop the unwinding oll the main spring. This would happen it the strap should accidentally slip oil' ot the wheel, or if for any other reason the resistance due to the carriage were suddenly removed. li/Ioreover, if at anytime it was desired to unhook the strap from the carriage the operator by momentarily holding the wheel 12 against turning can let the pawl into the ratchet and thus lock the springagainst unwinding.

Various changes may be made without departing` from my inventionnand parts of the ii'ivention can be used Lvitl'iout other parte.

IJhat I claim as newand .desire toseoure by Letters Iatent, is

l.. In a typewriting maohinethe combination with :L carriage, a 'spring driven Wheel and :L strap by Awhich said Wheel propels ysaid carriage, otra loclnadapted to hold said wheel :against turning;` to unwind its spring', one element .ot saiddock constituting' the meansnhereby said strap. is connected with saidxvheeliand'said strap normally holding said lock outo action.

In :L typewriting machine, thev combination With a carriage,.a 'spring driven Wheel and :L connection 'from said Wheel to propel said carriage, oit a loc-k including` a spring tending to bring` said lock into action to `prevent turning ofsavid 'Wheel in :L direction to :unwind its spring, and means whereby the pull on said carriage connection holds said lock out of :faction against-the pressure ot 4its sprinff.

3. In a typewritinganachine, the combination with a carriage, a spr-ing' *driven Wheel, and a connection fromlsaid Wheel to pronel said carriage, Vcita pawl and -lratchet adapted to prevent unwinding ot' saiidwheel, and means whereby said carriage connection holds said pan'l out of engagement with said ratchet.

4. In a typewriting machine, the combination With a carriage, a spring,` `driven `Wheel and a connection from said `Wheel to propel said carriage, of a pawl andv ratchet, means whereby said carriage connection acts onfsaid Wheel through said pawl and holds said pewl out ot engagement with said ratchet, and means for moving said pawl into engagement With said `ratchet when the carriage connection is' broken.

5. In a typewriting-machine, the combination with a. carriage, ya. spring `driven `wheeland :L connection from said Wheel to propel said carriage, of a stationary ratchet, a paWl lmounted on said vwheel and tending to engage said ratchet to prevent -unwindingg ot said spring, said carriage connection acting' on said wheel through said pawl and normally holding said pawl out of action.

G. In a typewritingmachine, the combi nation with a carriage, a spring driven Wheel and a connection from said-Wheel to propel said carriage, of astationary ratchet, a'pawl mounted on said Wheel .and having a spring tending` to= move into engagement with said ratchet, and a strap connected at one end with said pawl and at `the other end with the carriage, the pull on said strap normally holdinov said panflout ot' engage nient `with said ratchet.

7. In a typewriting machine, the combination With a carriage, of a drum and a shaft for said drum, said drum andfshalt being relatively rotatable, :L cage having a spring,`

therein, means Vfor detachaby connectingP said cage with said drum, a collar to which the inner end of the spring is connected, :L detachable connection between said collar and said shaft, tbe .whole construction being such that said cage with the spring` and col- :lar in it can be readily attached to and detached from said drum and shafl't; and a connection betuf'een one o'l" said drum and shaft't elements and the carriage.

8. `In a typeWritingmachine, the combination With a carriage, of a drum, a sha'tt on which said drum is rotatably mounted, a spring, a cage in ywhich said sgring; is :mounted and to which tht` outer end et the spring is attached, :L collar to which the inner end of the spring` is attached, :L detachable connection between said cage and drum, means for preventing -inlative turning;` motion between said collar and said sha't't but permitting the collar to he slipped iene wise over the end of the shaft; and m laus connecting` one ot said drum and shattolements to drive said cui 'flag-e.

9. In a typewriting machine, thc combination With a carriage, ot :L shaft. :L carriage driving;- wheel on one end ol said shaft L and connected with the carri aoc, :L drum ron tatably mounted on the other Acud ol said shaft, a spring` .having its outer `end connected With said drum and its inne end connected With said shaft so that the spring can be put under tension by turning said drum, and a detent for holding,y said drum. when it has been turned to put the spring;` under tension.

10. In a typewriting machine, the combination with a carnage, OiPA :L shaft haring a Wheel rigidly mounted on one end ot said shaft and a drum loosely mounted on the other end of said shaft, said Lvlieelmul drum spaced apart, and :L long,v bearing ttor the shaft between the drums, the irstmentioned drum being connected 'with the carriage, and the second mentioned drum having u driving spring therein with its inner end connected with said shaft; and :L dce-nt tor holding the last mentioned drum :nyaiust backward rotation to maintain the tensimi onsaid spring'.

l1. In a typewriting. machine, the combination with a main trame and a carriage, of :L hanger detachably secured to said main frame, a sleeve mounted in said hanger, a shaft journaled in said sleeve, a drive wheel fast on one end o'li said shaft and connected with said carriage, and a dri ringY spring ronnected with the opposite end o'l said shaft.

l2. In a typewritingl machine` the combination 'with a main trame and a carriage, oi

.a U-shaped hanger detachably secured to said main 'f1-ame, a sleeve mounted in the Vtwo arms otsaid itl-shaped hanger, :L sha'lt journaled in said sleeve, :L drive Wheel ou one end of said shai't and connected with i Said carriage, and a driving slning connected with the other end of said shaft.

13. In a typewriting machine, the combination with a main frame .find a carriage, oit a U-shaped hanger detaohahly secured to said main frame, a Sleeve mounted in the two arms of saidv hanger, a shaft joiunaled in. said sleeve, a drive wheel' on one end of Said shaft and connected with said can riage, a spring drum mounted on the oppo site end of said sleeve, and a spring' in said drum having its inner end connected with said Shaft.

141C. In a typewriting machine, the combi nation with a carriage, of a sleeve, a drum mounted on said sleeve, a spring,` in said drum and having its outer end connected with said drum, a shaft journaled in said sleeve and having the inner end of said spring connected therewith, driving connections from said shaft to said carriage, and a detent for said drum, the construction being such that said spring can be tensioned by turning said drum by hand.

15. In a typewriting machine, the co1nbination with the carriage of the machine, of a driving spring for said carriage, a Shaft having a polygonal end, a cup-shaped device to which the inner end of said spring is attached, said device being adapted to be slipped over the end of said shaft and having in its bottom a hole adapted to the polygonal end ot said shaft; and means con-- nectingone of said drum and shaftelements to drive said carriage.

16. In a typewriting` machine, a carriage strap adapted to rotate a driving` drinn through a pawl, which pawl if the strap should break, is adapted to arrest the drum.

Signed at the borough of Manhattan, city of New York, in the county of New York and State of New York this 5th day of March, A. D. 1920.

EDWIN E. BARNEY.

Witnesses:

CHARLES E. SMITH. E. M. WELLS.

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