US677706A - Type-writing machine. - Google Patents

Description

No. 677,706. Patented July 2, I90l. c. H. SHEPARD.

TYPE wnmmi Momma. (Application am 1m. 1a, 1901.)

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No. 677.706. Phtented July 2, IQDI. c. H. SHEPARD.

TYPE WRITING MACHINE.

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(Application filed Mar. 13 1901.) (No Model.)

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No. 677,706. .Patemu July-2, l90l.

c. H. SHEPARD. TYPE'WBITING MACHINE.

(Application filed In. 18, 1901.) (No Model.) 7 7 5 Sheets-Shoat 3.

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0. u. SHEPARD. TYPE WRITING MACHINE.

Patented'luly 2, l90l.

(Application filed Mar. 13, 1901.)

5 Sheets-Sheet 4.

(No Model.)

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Patented July 2, l90 l.

c. H. SHEPARD. TYPE WRITING MACHINE.

(Application Med Mar. 13, 1961.)

5 Sheets-Sheot (No Modl.)

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' UNITED STATES .PATENT FFICE'.

CHARLES H. SHEPARD, OF BROOKLYN, NEW YORK, ASSIGNOR TO WYCKOFF, SEAMANS dc BENEDICT, OF ILION, NEW YORK.

TYPE-WRITING MACHINE.

SPECIFECATION forming part of Letters Patent No. 677,706, dated July 2, 1901.

Application filed March 13, 1901. Serial No. 50,907. (No model.)

T all whom it may concern: Similar parts are designated by similar nu- Be it known that I, CHARLES H. SHEPARD, merals of reference. -a citizen of the United States, and a resident The framework of the machine comprises of the borough of Brooklyn, city of New York, a base 1, corner-posts 2, and top plate 3, over 55 in the county of Kings and State of New York, which is suitably mounted a traveling platen have invented certain new and useful Im- 4. The impressions upon the paper are made provements in Type-Writing Machines, of by types 5, carried upon the forward ends of which the following is a specification. rearwardly-striking type-bars 6, whose rear This application relates to the type-actions ends are pivoted upon a curved fulcrum-rod 6o 10 of writing-machines. 7, fixed in asegment 8, which is provided with One of the objects of the invention is to imradial slots 9 to receive the hubs of the typeprove the touch of the keys and increase the bars. Thelatterare operated by rearwardlyspeed of operation; and another object is to extending links 10, whose rear ends are pivprevent rebounding of the types by locking oted to the tips of upwardly-directed cross- 65 I5 them in normal position. levers 11-, which are pivoted between their To these and other ends my invention conends at 12 upon horizontally-arranged levers sists in certain combinations of devices, ar- 13, having keys 14: at their forward ends and rangements of parts, and features of construcfulcrumed at their rear ends upon a transtion, all as will be hereinafter fully set forth, verse bar 15, against which they are pressed 7o and particularly described in the concluding by a lifting-spring 16. The portion of the claims. lever 11 which extends below its pivot 12 is In the accompanying drawings, Figure lis designated as 17 and carries at its lower a vertical sectional elevation taken longituend a lateral antifriction-roller 18, which dinally and about centrally of a front-strike works between fixed opposite cam-surfaces, 75'

writingmachine embodying my improvewhereby when the key-lever 13 is depressed ments and showing the parts in normal posiand the lever 11 is moved downwardly endtion. Fig. 2 is askeleton view similar to Fig. wise the lower end of the arm 17 upon the 1, but showing the type half-way between the latter is cammed forwardly, and the upper basket and the platen. Fig. 3 is a similar end of the leverll is hence swung rearwardly '80 View toFig.2,butshowingthe typein printing upon the pivot 12, thereby through the link position. Fig. at is a fragmentary View of a 10 swinging the type-bar up to print. Betype-bar and part of its operating means and Heath the key-levers is arranged a transshowing the position assumed by the parts verse universal bar 19,which is suspendedby at theinitial depression of the key and before means of hooks 20 upon a dog-rocker frame 85 the type-bar begins to move. Fig. 5 is a per- 2]., carrying dogs 22 and 23, which cooperate spective view of a type-bar link. Fig. 6 is a in the usual manner with an escapementsectional side elevation of a modified type- Wheel 2a to control the letter-feeding moveaction, showing the parts in normal position. ments of the platen 4:.

Fig. 7 is an enlarged fragmentary view of the The rear cam surface upon which the o rear end of the type-bar shown at Fig. 6, roller 18 works is arranged rearwardlyof and showing the segment in which it is mounted below said roller and is preferably formed and the forward end of the operating-link. upon the forward side of a transverse hori- Fig. 8 is a fragmentary sectional rear view zontal bar 25, fixed at its ends by ears'26 and v taken on the line X X of Fig. 7. Fig. 9 is a screws 27 to the sidewalls of the base. The 5 skeleton view similar to Fig. 6, but showing portion of this camsnrface with which said the parts in printing position. Fig. 10 is a roller normally contacts slopes obliquely fragmentary sectional elevation of the typedownward and forward at 28 at an'acute anbar segment shown at Fig. 6. gle with relation to the direction of move- In the several views certain parts are omitment of the arm 17, so that at the first part IC 5o ted or broken away to disclose the invention of the key depression there is onlya compara more clearly. A tively slight vibratory movement of the lehorizontal and which is hence arranged at an obtuse angle relatively to the endwise movement of the arm 17, whereby the speed of the type-bar is rapidly increased as it nears the printing-point, thereby accomplishing the twofold object of absorbing the momentum of the operators hand and causing the type to deliver a sharp blow upon the paper. At Fig. 2 it will be seen that .the key has completed about three-fourths of its movement by the time the type is half-way to the platen, the remaining half of the type movement being accomplished by the remaining fourth of the key-stroke. Thus the keystroke is cushioned both at the beginning and termination thereof, and a satisfactory impression of the type is also insured. The cross-levers 11 extend in a row transversely of the machine, each being provided with a roller 18 for engaging the common cam-surface formed upon the bar 25.

\Vhen the key-lever and connected parts are returned to normal position by the spring 16, the movement of the roller 18 is controlled by a cooperative cam-surface, which is substantially parallel with the forward working face of the bar 25, said cam-surface being formed by suitably bending and arranging a plate 31, which extends longitudinally of the bar 25 and whose lower portion may be bent rearwardly at 32 and secured by screws 33- to the under side of said bar, said plateextending the entire working length of ;-tlie bar and being transversely slotted at 34 to form a comb, within which the arms 17 may play, the points of the comb being bent horizontally at 3-5 to clear the key-levers when they descend. As the opposite camsurfaces are substantially parallel through: out their working portions, it will be understood that by contact of the roller 18 with the plate 31 during the upward motion of the key said roller is guided in a path substantially coinciding with the path followed at the downward movement thereof, and hence at the first part of the return movement of the key that is, from the lower dotted-line position to the full-line position at Fig. 2- the type-bar completes one-half of its return movement to the basket, which is designated as 36. Thus it will be seen that the liability of collision of said'type-bar with a succeeding-ty'pe-bar is reduced to the minimum, and hence the machine may be operated at high speed.

I pivot upon each bar at 37 a depending hook 38, which catches under the forward lower corner of the segment 8 at 39, so that the type-bar upon striking the basket cannot rebound and collide with a subsequently-operated type-bar. I provide upon the extended forward end of the type-bar-operating link 10 a lateral pin 40, which engages an upwardly-extending bent finger 41 upon the catch 38, so that at the initial portion of the rearward movement of said link the catch may be swung upon its pivot 37, thereby releasing the bar, as illustrated at Fig. 4. In order to permit the necessary lost motion of the link, the latter is longitudinally slotted at 42 and engages a shoulder formed upon a stud which projects laterally from the typebar and has a head 43, which is made oblong, so as to permit detachment of the link 10 when desired. After the latch 38 has been released and during the printing stroke of the type-bar the movements of said latch are immaterial; but in order to prevent displacement thereof when the type-bar is in printing position I provide upon the latter a projection 44, which, as will be seen at Fig. 3, prevents said latch from swinging unduly upon its pivot. During said upward move ment of the bar the pin 40 upon the link 10 escapes from the bent finger 41 upon the latch; but during the return movement of the parts said pin rengages said bent finger and by a pressure thereon at the final part of the return movement of the key insures the rengagement of the latch with the segment at 39. Thus the type-bar is alwaysprevented from rebounding, and hence the machine maybe operated at high speed without danger of collision, even though the types are assembled in very close order, as in frontstrike machines.

Referring now to Figs. 6 to 10, inclusive, the key-levers 13 are connected by vertical links 45 to the rearwardly-extending arms 46 of a series of bell-cranks, which are pivoted upon a transverse fulcrum-wire 47 and work in vertical slots 48, formed upon'a casting 49, extending transversely of the machine and secured upon the side walls of the base by screws 50. Said bell-cranks ha've upwardlyextending arms 51, which are connected by links 10 to type-bars 6, which are provided with returning-springs 52. These type-bars are pivoted upon a curved fulcrum-wire 7, suitably seated in a segment 8, formed upon the casting 49, and provided with radial slots 53, in which the type-bar hubs work. Upon the forward end of each link 10 is provided a laterally-projecting catch 54, Fig. 8, which normally engages a recess 55, formed upon the casting and opening rearwardly, the abovementioned radial slots being widenedat 53 to afford a clearance for the forward ends of said links and said recess 55 being formed upon the rear face of an upwardly-projecting ledge 8*, formed upon the type-bar segment. Shoulders 56 upon the catches 54 engage slots 57, formed in the operating-arms Of the type- 7 bars and normally extending in a direction substantially parallel with the links 10 By means of these catches 54 upward movement of the type-bars is normally prevented; but upon the depression of a key the link 45 is pulled down, the bell-crank 46 51 vibrated, and the link 10 drawn rearwardly, thereby withdrawing said catch from the recess 55 and releasing the type-bar, the slot 57 in the latter permitting the necessary lost motion of said link. During the further movement of the key said type bar is pulled upwardly to print, as'at Fig. 9. Upon relief of the key from pressure the parts are returned to normal position by springs 16 and 52, the catch 54 reentering the recess 55 by reason of the reaction of spring 16 and returning the typebar to normal position, thereby avoiding the possibility of its rebounding and clashing with a subsequently-operated type-bar. If during the return of the parts to normal position the catch 54 should contact with the rear vertical face of the ledge 8", it will be understood that the completion of the type bar movement will not be thereby prevented, since the spring 52 will by its action upon the type-bar cause the latter to exert a camming action upon said stud, forcing it downwardly until opposite the recess 55, Whereupon the spring 16 causes said catch to snap into locking position. YVhere two types on a bar are used, either the platen may be shifted or the type-bars, as may be desired.

Many other changes may be made within the scope of my invention, and parts thereof may be used without others.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a type-writing machine, the combination of a series of type-bars, a series of keys, operative connections extending from the keys to the type-bars, and a series of catches for locking the type-bars in normal position, said catches being releasable by said keys.

2. In a type-writing machine, the combination of a series of type-bars, a series of keys, a series of connections extending from the type-bars to the keys, and a series of catches arranged at the type-bars for lockin g them in normal position, said catches being releasable by said keys through said connections.

3. In a type-writing machine, the combination with a series of type-bars, of a series of keys, operative connections extending from the keys to the type-bars, and a catch forlocking each type-bar in normal position, each of said catches being moved by its key to a re leasing position at the initial portion of the printing stroke of the key and before the movement of the type-bar begins.

at. In a type-writing machine, the combination with a series of type-bars, of a series of keys, a series of levers operated by said keys, a series of links, and a series of catches releasable by said links, said catches locking the type-bars in normal position.

tion with a series of type-bars, of a series of keys, a series of catches, and fixed means cooperating with said catches for looking the type-bars in normal position.

7. In atype-writing machine, the combination with a series of type-bars mounted in a segment, of a series of key-controlled catches cooperating with said segment to lock the type-bars in normal position.

8. In a front-strike writing-machine, the combination with a platen, of a series of rearwardly-striking type-bars, a series of operating-levers connected by links to said typebars, keys for operating said levers, and catches controlled by said links, said catches operating to lock the type-bars in normal position.

9. In a front-strike Writing-machine,-the combination with a platen,of 'a system of rearwardly-striking type-bars, a system of upwardly-directed levers connected by links to said type-bars,a series of key-bearing levers connected to said levers and extending rear- Wardly beneath the type-bars, and means releasable by said links for locking the typebars in normal position.

10. In a type-writing machine, the combination with a series of type-bars, of a series of operating-levers directly connected to said type-bars by typ'e-bar-locking devices, and a series of key-levers connected to said levers.

11. In a front-strike writing-machine, the combination with a platen, of a series of rearwardly-striking type-bars, a series of upwardly-directed operating-levers therefor, and type-bar-locking devices directly connecting said levers to said type-bars.

12. In a type-Writing machine, the combination with a series of type-bars and a series of catches therefor, of a series of key-operated levers having means for releasing said catches and operating said type-bars.

13. In a front-strike Writing-machine, the combination with a platen, of a system of rearwardly-striking type-bars, catches therefor, and a system of upwardly-directed keyoperated levers having means for releasing said catches and operating said type-bars.

14. In a front-strike writing-machine, the combination with a platen, of a series of rearwardly-striking type-bars, a segment upon which they are pivoted, a series of catches cooperating with said segment to lock said type-bars in normal position, and a series of upwardly-directed levers having means for releasing said catches and operating said type-bars.

'15. In a type-writing machine, the combination with a series of type-bars, of a ser of catches, and a series of operating-levers having means for releasing said catches and operating said type-bars.

16. In a type-writing machine, the combi-;

nation with a series of type-bars, of a series of key-controlled pivoted catches for locking 1 said type-bars in normal position.

17. In a type-Writing machine, the combination with a type-bar, of a lever connected thereto by a slotted link, and a catch con trolled by said link, said catch locking the type-bar in normal position.

18. Ina type-Writing machine, the combisaid type-bars.

moving said type-bars.

20. In a type-writing machine, the combi nation of a type-bar, a key-operated lever, a; catch pivoted upon said type-bar, a slotted link connecting said lever to said type-bar, and means upon said link for moving said catch to release the type-bar.

21. In a type-Writing machine, the combination with a type-bar, of an operating-lever therefor, and a link connecting said lever to the type-bar, said link having means for looking the type-bar in normal position.

nation with a type-bar, of a catch pivoted thereon, a lever, and a link connected at one end to said lever and at the other end connected to said type-bar and to said catch.

23. In a type-Writing machine, the combination with a type-bar, of segment 8, catch 38 pivoted on the type-bar, finger all upon the catch, link 10 connected to said finger, and keyoperated lever 11 connected to said link.

24. In a type-writing machine, the combination of type-bar 6, segment 8, catch 38 pivoted on said type-bar and engaging said segment, pin 44, finger 41 upon said catch, stud 43 upon said type-bar, slotted link 10 engaging said stud and having pin 40 engaging said finger 41, and key-operated lever 11 to which said link is connected.

25. In a type-writing machine, the combination of a type-bar, a type-bar catch, a spring for said catch, and a key for releasing said catch and moving said type-bar.

26. In a type-Writing machine, the combination of a type-bar, a catch, a key for moving said catch and releasing said type-bar, and a spring for returning said key, type-bar and catch to normal position.

27. In a type-Writing machine, the combination of a type-bar, a spring-pressed lever connected thereto by a slotted link, and a catch controlled by said link and held in normal position by said spring through said link.

28. In a type-Writing machine, the combination of a series of type-bars, a series of keyoperated levers, and a fixed cam for vibrating said leversso as to speed the type-bars as they approach the printing-point.

29. In a type-Writing machine, the combination of a type-bar, a lever connected thereto, means for moving the lever endwise, and

1 a fixed cam for vibrating said lever during the endwise movement thereof.

30. In a type-Writing machine, the combination of a series of type-bars, a series of keybearing levers, a series of sublevers pivoted upon said key-bearing levers, and connected to said type-bars, and a fixed cam arranged transversely of said sublevers and engaged thereby for vibrating said sublevers and speeding the type-bars as they approach the 1 printing-point.

19. In a type-writing machine, the combination with a series of type-bars, of a series of pivoted catches, and a series of key-oper-' ated levers for releasing said catches and 31. In a type-writing machine, the combination of a series of type-bars, a series of keylevers, a series of sublevers pivoted on said key-levers and connected to said type-bars, and a transverse fixed bar having an oblique face engaged by the ends of said sublevers.

32. In a type-Writing machine, the combination of a type-bar, a lever connected thereto, means for moving said lever endwise, a roller on said lever, and a fixed cam engaged by said roller, said cam being obliquely disposed so as to cause avibration of said lever during the endwise movement thereof.

33. In a type-writing machine, the combination of a series of type-bars, a series of opcrating-levers therefor, cam-bar 25 arranged 22. In a type-Writing machine, the combi transverselyot said levers and engaged thereby, coacting cam-plate 31 arranged opposite to said cam-bar, and slots 34 formed in said cam-plate for receiving said levers,

34. In a front-strike writing-machine, the combination with a platen, of a series of rearwardly-striking type-bars, a series of keylevers extending beneath said type-bars, a series of upwardly-directed cross-levers pivoted on said key-levers, bar .25 fixed transversely below said key-levers and having a forwardlyand downwardly sloping cam-surface, rollers 18 on the lower ends of said crosslevers, and fixed cam-plate 31.

35. In a front-strike Writing-machine, the combination with a series of rearwardly-striking type-bars, of a series of key-levers extending rearwardly beneath said type-bars, a series of upwardly-directed cross-levers pivoted upon said key-levers, rollers 18 upon the lower ends of said cross -levers, and fixed transverse cam-bar 25 engaged by said rollers.

36. In a front-strike writingmachine,' the combination with a platen, of a system of rearWardly-striking type-bars, key-levers 13 extending rearwardly beneath the type-bars, cross-levers 11 pivoted on said key-levers and connected to said type-bars, rollers 18 upon the lower ends of said cross-levers, cam-bar 25 arranged transversely and engaged by said rollers, coacting cam-plate 31, and springs 16.

37. In a type-writing machine, the combination with a series of type-bars, of a series of levers connected thereto, means for movsaid lever, so as to speed the type-bar as the latter approaches the printing-point.

39. In a type-writing machine, the combination with a type-bar, of an endwise-movable lever connected thereto, and a fixed cam having both a sloping face 28 arranged at an acute angle to the endwise movement of said lever and also a sloping face 30 arranged at an obtuse angle to the endwise movement of said lever so as to speed the type-bar as the latter approaches the printing-point, said cam also having an intervening curved portion 29 between the sloping faces 28 and 30.

40. In a front-strike Writing-machine, the combination of a platen, a series of rearwardly-striking type-bars, a series of keylevers extending beneath said type-bars, a series of cross-levers pivoted on said key-levers and connected to said type-bars, rollers 18 upon said cross-levers, and a fixed transverse cam-bar 25 arranged rearwardly of and below said rollers.

Signed at the borough of Manhattan, city of New York, in the county of New York and State of New York, this 12th day'of March,

CHARLES H. SHEPARD. Witnesses:

K. V. DONOVAN, E. M. WELLS.

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