US956144A - Type-writing machine. - Google Patents

Description

J. G. MGLAUGHLIN.

TYPE WRITING MACHINE.

APPLICATION FILED NOV. 2a, 1901.

Patented Apr. 26, 1910.

- 5 SHEETS-SHEET 1.

WITNESSES:

- YHLS' ATTORNEY 5 SHEETS-SHEET 2.

Patented Apr. 26, 1910.

J. G. MGLAUGHLIN- TYPE WRITING MACHINE. APPLICATION FILED NOV. 26, 1907.

WITNESSES.

J. U. MGLAUGHLIN.

TYPE WRITING MACHINE. APPLICATION FILED NOV. 20, 19m.

Patented Apr. 26, 1910.

.5 SHEETS-SHEET 3.

BYHZS ATTORNEY J. C. MGLAUGHLIN- TYPE WRITING MACHINE.

APPLIGATION FILED NOV. 26, 1907.

Patented Apr. 26, 1910.

5 sums-sum 4.

5. w a E m w Y J. G. MGLAUGHLIN.

TYPE WRITING MAGHINE. APPLICATION TILED NOV. 26, 1907.

5 SHEETS-SHEET 5.

956,144. Patented Apr. 26, 1910.

UNITED STATES PATENT oar on.-

JoriN c. McLAUGI-ZLIN, or JERSEY or'rz, NEW JERSEY, ASSIGNOB. T0 'UNDERWOOI) TYPEWRITER COMPANY, or NEW YORK. N. Y., A CORPORATION or NEW JERSEY.

T 'x'l E-WRITING MACHINE.

This invention relates to tabulating mechanisms of typewriting and other machines, and especially to the class of decimal tabulators. e

One of the objects of the invention is to facilitate the tabulating operation, and to this end, I mount depressible denomination keys at the front of the keyboard of a typewriting machine, andconnect them to independently operable denomination stops, and

provide for the mere depression of any key not only to set its stop but also to release the letter feeding carriage,

Another object of'the invention is to imthe construction andprove and simpli mounting of the co umn stops upon the carriage, and to facilltate the release of the carriage from the arresting stop.

Another object is to provide simple and effective means for effecting endwise adjustment of the column stop rack upon the carriage.

Still another'objectofthe invention is to improve and simplify the construction and mounting upon the main frame of the typewriting, machine, of the bracket which carries the denomination stops, and to render said bracket easily adjustable in various di-' rections to bringlt into proper register with the column stops upon the carriage.

' A further object of'the invention is to provide improved means for checking the speed of the carriage when released for tabulating purposes, and to avoid rebounding of the carriage. I provide a centrifugally operated brake, which is connected to the carriage so that the'speed of the carriage shall in-- automatically when the latter is released from its letter spacing devices thereby preventing the carriage from exdeedinga certain limit of speed. I also contrive to retard the speed of the carriage mechanlcally during the interval ensuing between the start of the carriage and the moment when it comes under the control of the centrlfugal brake,

Specification of Letters Patent. Application filed November 26.1907. Serial No. 403,891.

Patented Apr. 26, 1910.

crease slowly from minimum to maximum, thereby securing even movement of the'same and avoiding undue shock at the arrest of the carriage. The braking means are eftect= ive not only to control the speed of the carriage, but also to prevent any rebound there- -of when arrested by the tabulating stops;

this being truein all cases, whether the run of the release carriage is short, long or medium. Other objects and advantages will herein; after appear.

Inthe accompanying drawings, Figure 1 is a longitudinal sectional elevation of an Underwood front strike writing machine showing my improvements applie l thereto; the parts being shown in normal positions. Fig. 2. illustrates the manner of engagement of a column stop with a denomination;

stop. Fig. 3 shows an elevation and Fig. 4.

an'end view ofan improved denominationstop. Fig. 5 is a plan of a set of denomination stops, showing particularly the" remov able top guide therefor. Fig. 6 shows a denomination stop rod. Fig.7 is a view similar to Fig. 1, but showing the denomination stop key depressed. Fig. 8 is a sectional plan showing the carriage releasing devicesoperated by the denomination stop rods. Fig. 9 is an inverted plan of the rear ends of the denomination stop levers an d of a bracket in which'they are guided. .Fig. 10- is a plan of the denomination levers and of a portion of the paper carriage. Fig. 11 is a rear elevation of the tabulating mechanism. Fig. 12 is an inverted plan of the tabulatingdevices. Fig. 13 is"a--p1an, and Fig. 14 is a side elevation of a detail showing the manner of adjustingdengthwise the. rack which carries the column stops. Figs. 15 and 16 show respectively a sectional elevation and a plan of one end of a bar which locks the column stops upon the carriage;

the other end of the bar being seen at Fig.

View similar to Fig. 18 but-showing the centrifugal'brake in operation. F ig..20-is a plan of the cross-bar and weights seen at Fig. 18. Fig. 21 is a detail of the weights, andFig. 22 is an inverted plan of a disk forming part of the braking mechanism and having cam projections, whereby it is turned and. pressed upwardly for checking the speed of the carriage.

Denomination keys 1 are shown arranged in a row'in front of the ke board 2 and framing 3 of an Underwoo typewriting machine. These keys are depressibly mounted upon the front ends of levers 4 fulcrumed between their ends upon a single horizontal rod 5. At their rear ends, said levershave knuckle-joint connections at 6 with upstanding rods or metal strips 7, upon the upper ends of which are formed denomination stops 8. Said rods are mounted in a.

vertical bracket 9 having at its lower end a web 10 in which are formed vertical slots 11, inwhich work the rear ends of the levers and the lower ends of the stop rods. The latter, at- Fig. 11, stand parallel or approximately' so and are arranged at letter space intervals. The levers 4 extend forwardly a short distance from the rods, Figs. 9 and 10, and then diverge for a short distance as at 12, and are again bent into parallelism at 13 at the points where they are fulcrumed upon the rod 5, From thence they diverge forwardly at 14 to their key-bearing ends, said ends being preferably bent into parallelism and workingin a comb 15 depending from the front bar of the machine frameand having a pad 16 for the levers to strike up against.

The upper ends of the stops are guided in a horizontal comb comprising 'two similar parts 17, 18- secured by screws 19 in a seat 20 formed on the top of the bracket 9 and having coincident slots 21 to guide the stops,

said slots formed at letter space intervals.

Usually these slots are formed ten to the inch to agree with the letter spacing movements of the carriage of the ordinary ma chine; but in cases where the tabulating attachment is desired for useupon a machine built for eleven spaces or nine spaces to the inch, it is only necessary to remove the guides 17, 18, and substitute another pair of guides having slots at the requisite intervals; it

being unnecessary to make any further from said base, whereby thebracket is positioned upon the machine. Threaded down through the side arms are screws 27 to bear upon the top of the wall 24, or of a fixture 28 usually placed upon said base. Below said screws -are two screws 29 directed forwardly to bear against the rear side of the wall 24. Two more screws 30 are threaded up through the base of the bracket and provided with cones 31 to bear. up a ainst the frontcorner of .the lower edge 0 the wall 24. It will be understood that there are;

two of the screws 30 one at each side of the register with the column, stops 32 that are mounted upon the carria e 33. After such adjustment is effected t e screw 3.0 may be turned up to fasten the bracket securely, the cones having the eifect of drawing the bracket both downwardly and forwardly upon the screws 27 and 29. Arms 34 extend forwardly from the base of the bracket beneath the typewriting machine and carr at their forward ends. the fulcrum r0 5. Screws 35 extend up one from each of said arms to bear up against a fixed part of the machine 36 and thereby afford a support to the arms 34; said screws beingadjustable after the bracket is fixed, and having jam nuts 37 to secure them.

The column stops are in the form of plates forked t0 bestride a notched bar 38, the notches 39 being formed in the top and bottom faces of the bar and preferably also in the rear face thereof to receive said plates,

the latter being adapted for use at any point along the bar. The forks of the column stop members are marked 40 at Fig. 3, and project from a handle portion 41. The forks are pointed or rounded at 42 for convenience in setting them upon the bar 38. The device may be set with either edge up so that either fork may serve as a column stop, the lower fork always projecting sufliciently below the bar, Fig. 1, for this pur 3056. On alternate sides, the forks are slight y beveled at 43 and the denomination stops arealso slightly beveled at 44. At Fig. 2, it will be seen that these bevels are upon the faces which engage to arrest the carriage, when the latter is released by the tabulating keys.

These bevels facilitate subsequent with-' drawal of the denomination stop by the adjusting the column stop rack is threaded into the bar 38 to. fasten the latter after its adjustment.

The carriage 33 is connected by a strap 57 to a sprin barrel 58, and isprovided with a letter fee ing rack. 59 in mesh with an escapement pinion 60. The rack is hinged upon a pair of arms 61, so that it may be lifted. away from the pinion to release the carriage. For this purpose, a lever 62 is fulcrumed at 63 upon the framework and provided at its forward end with a roll 64:

to engage and lift the rack. The rear end of the lever is pulled down by apendentlink 65 connected at its lower end to an arm 66 which projects from a rocker or rock shaft (57. The latter rocks at each operation of a denomination stop rod, the latter. having jogs 68 any ofwhich may lift up a transverse horizontal universal bar 69 secured upon said rock shaft 67 by means of screws 70. \Vhen a key is depressed the -ro is thrust up, thereby lifting the universal bar and rocking the shaft 67 to pull down the link 65 and lever 62'and lift the roll 64 and rack 59, as seen at Fig. 7. Individual springs 71 caught in cats 72 on the stop rods and extending to a fixed cross bar 73, serve to re- 7 casing 75, from the ca turn the stops and keys to normal positions.

Secured upon one end of the rock shaft 67, by means of a hub 74, is a cylindrical I 76 of which protrudes a bevel pinion? whichby the carriage releasing movement of said rock shaft is trust into mesh with a bevel gear 77 secured upon the rear face of the carriage driving spring barrel 58, so that the pinion is rapidly rotated by the barrel as the latter draws the carriage along. The pinion is fixed upon the upper end of a spindle. 78 which at its upper end turns in a boss 79 formed upon the cap, and at its lower end revolves in a bo'ss 80 formed upon the opposite head of the casing. The cap has a flange 81 threaded into the top of the casing,so that it may be taken off together with the pinion and shaft and the several parts attached to'the latter.

Attached to the shaft 78 within the casing.

by means of a screw 82 is a cross arm 83 from which hangs a pair of weights 84, the latter, being. pivoted at 85 to swim outwardly when rotated by the shaft, F 1g. 19. When swung out, projections 86 upon the Weights, extending up from the pivots 85,.

are caused to press up against the under side of a disk 87 loose upon the shaft 78, and to force'said disk up,against a friction washer '88 of fibrous or other material which is adapted to rub against both the top face of the 'disk and the lower face 89 of the plate-like cap 76, thus .causing considerable frictional opposition to the rotation of the shaft, and serving to prevent the speed of the carriage from exceeding a certain limit.-

The disk 87' is caused to revolve by reason of the engagement of the cross arm 83 with projections 90 extending down from said disk. Preferably said projections are beveled, and the top edges of the cross arm are also beveled, as seen at 91, so that when at thebeginning of the run of the carriage the cross arm strikes the projection, it is enabled t cam the disk 87'upwardly and produce a fair degree of pressure between the disk, washer and cap; the cross-arm revolving slightly relatively to the disk 87, to cam the latter against the washer. These three parts are always in contact even when still. and there is suflicient initial friction between them to afford the necessary resistance, so that the bevels 91.0n the cross arms can produceithe required ca-mming efiect on the pro jections 90. The operation of the mechanically operating braking devices lslndependent of the speed of the carriage.

In practice, the paper carriage may run a short distance, say from half an inch to two inches, at normal speed without substantial interference from the braking devices; but during a moderately long run the mechanical braking means,.that IS, the camming devices, take effect and retard the rate at which the speed of the carriage 1ncreases; and when the rate becomes so' great that the centrifugal braking devices take effect, there is no noticeable jerking actlon of the carriage and no tendency of the strap 57 to bulge and slip off from the spring drum. Moreover, in no case is there ,any

objectionable back lash or rebound of the carriage upon its arrest by the tabulating stops. The screw 82 may be loosened and the 1 cross arin 83 set up or down on the shaft 7 8 and again secured thereto, in order to vary the force with which the projections 86 cam upwardly the friction devices, and hence to-.

vary the control of the governor over the speedof the carriage.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used wlthout'others. Having thus described my invention, I claim:

1. In a typewriting and tabulating niechanism', the combination with a carriage hav ing a column stop thereon, of a set of upstanding denominat-ion-stop rods below said column stop, and-a setofdenomination-stop levers .extending forwardly from the lower ends of said rods and bearin de ressible keys at their forward ends; s otte guides being provided for the lower ends of said rods, and the rear ends of said levers being bent into parallelism and working in said slotted guides.

2. In a typewriting and tabulating mechanism, the combination with acarriage having a column stop, 035a series ofnpstandin rods in the form of metal strips below sai column stop and having their upper ends in the 'form of denomination stops, a bracket: havingcorrespondin slotted guides at its upper and lower en s for said strips, and

key-operated means for lifting said strips.

anism, the combination with a carriage' hava column stop, of a series of upstandin 1n rods in the form of metal strips below sai column stop and having their upper ends in the form of denomination'stops, a bracket, (guides at its strips, and key-operated means for lifting said strips;

having corresponding slotted upper and lower en s for sai sald key-operated means including levers fitted at their rear ends within'the lower iding slots in said bracket and diverging drwardly therefrom, and bearing keys at their forward ends.

4. In a typewriting and tabulating mechanism, the combination with a carriage having a column stop, of a series of key-o erated upstanding denomination-stop ro s, a

bracket having guides for said rods, and.

framework of the machine and having.

guides for said rods, armsextending forwardly from the lower end of said bracket a fulcrum rod mounted in said arms, an

key-operated levers engaging at their rear ends said rods, and fulcrumed between their ends upon said fulcrum rod and diverging forwardly to the keyboard.

6. In a typewriting and tabulating mechanism, the combination with a carriage having a column stop, of a series of denomination-stop rods extending down from said column stop, a bracket .secured upon the framework of the machine and having guides for said rods, arms extending forwardly from the lower end of said bracket, a

fulcrum rod mounted on said arms, and keyoperated levers engaging at their rear ends a typewriting and tabulating meo'h-' with said tion-stop .rods extending down from said column stop, a bracket secured'upon the framework of the machine .and having guides for said rods, arms extending for-.

wardly from the'lower end of said bracket, a fulcrum rod mounted in said arms, keyoperated levers engaging at their rear ends said rods,'and fulcrumed between their ends upon said fulcrum rod and diverging forwardly to the keyboard; said key-levers at their rear ends being bent into parallelism and fitting in said bracket guides; said bracket having between its upper and lower ends a air of arms or lugs to receive fas tening evices for securing the bracket upon the base of the machine, a rock-shaft mounted in said lugs, means upon said rods for enabling any. of the latter to rock said rockshaft, and a carriage-releasing mechanism actuated by said rock-shaft.

,8. In a typewriting and tabulating mechanism, the combination .with a'carriage and a. spring barrel for driving the same, of a column stop, a cooperating stop, carriagefeeding devices,@ a carriage releasing mechanism, 5 gear revolvin with said spring barrel, pinionthrown into mesh with said gear at the operation of said carriage-releasing mechanism, and a brakeoperated by said inion.-

9. n a typewriting machine, the combina- 7 tion of a carriage, a spring barrel connected thereto, letter-feeding mechanism, a column stop upon the carriage, a set of key-operated denomination stops on the framework, a rocker connected to be rocked at the operation of any of said denomination stops, carria e-releasin mechanism connected to said roc er, a pin on upon-said rocker and turning upon an axis transverse to the rocker, a ear upon said spring barrel and normally disconnected from said pinion, the latter being mounted so that the carriage releasing movement of the rocker throws itintovmesh gear, and a brake operatedby said pinion. v

10. In a typewriting and tabulating mechanism, the combination with a carriage and letter feeding devices, of a spring barrel to drive the carriage, a gear upon said spring barrel, a brake-operating pinion normally out of mesh with said gear, tabulatingstops, a carriage-releasing mechanism, and means for enabling said carriage-releasing mechanism to cause said pinion to mesh with said gear during the travel of the carriage.

11. In a typewriting and tabulating mechbracket at'the-rear of the typewriting machine-frame and carrying a set of denomination-stop rods and having at its sides screws to bear down upon the base of the machine frame, screws below said screws to bear against the rear vertical face of the machine base, and screws having cones to bear up against the front bottom edge of the rear wall of the base. v

13. A tabulating attachment for a type- Writing machine, comprising an upstanding bracket at the rear of the typewritmg machine frame and earryinga set ofdenomination-stop rods and having at its sides screws to bear down upon thebase of the machine frame, screws below said screws to bear against the rear vertical fa'ccof the machine base, and screws having cones to bear up against the front bottom edge of the rear wall of the base; iiieans being provided adjacent to the first-mentioned screws to posit on the bracket upon the machine frame.

14. A, tabulating attachment for a type writing machine, comprising an upstanding bracket at the rear of the typewriting machine frame and carrying aset of denomination-stop rods and provided with positioning the machine of levers to operate the stop means and having screws to bear down upon the base of the machine frame, screws to bear against the lower rear vertical face of base, and screws having cones to bear up a ainst the front bottom edge of the rear W211? comprising arms extending forwardly beneath the machine frame and carrying a set rods, and adjustable screws extending upwardly from the forward portions of said arms to support the latter against a part of the framework.

15. A speed-governor for the powerdriven carri'ageof a typewriting and t'abu lating machine, including cooperating friction devices, mechanism dependent on the movement of the carriage to render said A friction devices eifective, and powerful cen- -trlfugally operating means rendered eifect- Ive only by relatively rapid-movement-of the carriage to increase the effect of said friction devices and limit the speed of the carriag 16. speedgovernor for the owerdriven carriage of a typewriting an tabulating machine, including relatively movable friction members, mechanically-operating washer, to force the latter against the plate.

, force the latter of the base; said bracket also' lating machine, including mechanically op the latter both to rotate the disk and to press means rendered efiective'by relatively slow movement of the carriage to press one of said members lightlyagainst the other to retard slightly the movement of the carriage, and centrifugally operating means rendered effective by a relatively rapid movement of the carriage to force said frictionmembers powerfully together to limit the speed of the carriage.

17, A speed-governor for the powerdriven carriage of a typewriting and tabulating machine, comprising means dependent upon the speed of the carriage for limiting such speed, and mechanically operatingmeans dependent upon the movement of the carriage for preliminarily retarding the movement of the carriage.

18. A speed-governor for the" powerdriven carriage of a typewriting and tabulating machine, comprising a revolving arm connected to the carriage, a revoluble loose disk, a fixed plate, a friction washer between the disk and the plate, and a'tcam between. the disk and arm to enable the latter both to rotate the disk and press it against the 19. A speedgovernor for the powerdriven carriage of a typewriting and tabu-' lating machine, comprising a pair of re volving. arms connected to the carriage, a revoluble loose disk, a fixed plate, a friction washer. between the disk and the plate, and cams 'upon thedisk engageable by .the arms to enable the latter both to rotate the disk and to press it up against the washer to against the plate.

20. A speed-governor -for the powerdriven carriage of a typewriting and tabulating machine, comprising a pair of revolving arms connected to the carriage, a revoluble loose disk, a fixed plate, a friction washer between the disk and the plate, and cams upon th'edisk engageable by the arms to enablethe latter both to rotate the disk and to press it up against the washer to force the latter against the plate; and centrifugal devices revolving with the arms and havlng means to force the disk against the washer.

' 21. A speed governor for the powerdriven carriage of a typewriting and tabuerated braking means capable only of slightly retarding the movement of the carriage, and centrifugally operating auxiliary means to act upon said braking means to determine 2 I the maximum speed of the carriage.

22. A speed governor for the owerdriven carriage of a typewriting an tabulatlng machine, comprising a pair of revolving arms connected to the carriage, a revolu- 2'5 ble loose disk, a friction washer, means upon the disk engageable by the arms to enable it up against the washer, and centri igal weights pivoted upon said arms and having means to bear against said disk to press the washer.

23. A speed-governor for the owerdriven carriage of a typewriting an tabulating machine, comprislng'a spindle connected to the carriage, a palr of arms thereon, a revoluble loose disk, a friction washer, and centrifugal weights pivoted u on said arms and having projections to orce the disk a ainst the washer, said arms being adjustable upon said-spindle to vary the pres- ,sure exerted by said projections upon said disk.

24. A speed governor for the powerdriven carriageof a typewriting and tabu-' a cap, a spindle. extending through the cap andvhavmgon its outer end a pmion connected to the carriage, a cross arm secured upon said spindle, a disk loose upon said spindle and aving projecting cams, a friction washer combined between said disk and said cap, said cams engageable by said crossarm to turn the disk and also press the latter against the washer,-and pendent weights pivoted 'to said cross armand having pro= jections to engage said disk to force the same'against'the washer.

26. A speed-governor for, the owerdriven carriage of a typewriting an tabulating machine, comprising a casing, a cap threaded thereon, a spindle extendin through the cap and having on its outer en a PlIllOIl. connected to the carriage, a cross arm secured upon'said spindle, a disk loose upon said spindle and having projecting cams, a friction washer combined between said disk and said cap, said cams engageable by said cross-arm to turn the disk and also press the latter against the washer, and

pendent weights pivoted to said .-cross arm and having projections to engage said disk to force the same against the washer; said spindle being journaled at one end in the cap, and at the other end in the opposite head of the casing.

27. In a typewriting and tabulating mechanism, the combination with a'carrlag'e-releasing mechanism including a rocker, of a casing mounted on said rocker and having a cap, a spindle extending through the cap and having on its outer end a pinion movable by the rocker into enga ement with a gearwhich is connected to t e carriage a cross arm' secured upon said. spindle, a dlSk loose upon said spindle, a friction washer combined between said disk and said cap said disk rotatable by saidcross-arm, and pendent weights pivoted to said cross-arm and having projections to engage said disk to force the same against the washer.

28. A speedgovernor for the powerdriven carriage'of a typewriting and tabulating machine, comprising braking means operated by the carriage driving means but independent of the speed of the carriage, and centrifugally-operatmg auxiliary devices to actupon said braking means to limit the speed of the carriage.

29. A speed-governor for the powerdriven carriage of a typewriting and tabulatin machine, comprising two revoluble mem ers and a cam, one of said revoluble members connected to the carriage and acting' through said cam both to drive the other of said members and to wedge or press the latter against a friction device, and centrifugally operating devices to determine the maximumspeed of the carriage.

30; In a typewriting and tabulating machine, the combination with a power-driven carriage and carriage-releasing means including a rocker, of a casing mounted upon said rocker, a centrifugally operated brake within the casing, a pinion upon said casing and connected to said brake, and a gear with which said rocker causes said pinion-to mesh; said gear connected to the carriage, said casing having a cap threaded thereon, and said pinion and braking means con nected to said cap to be attached or removed therewith.

31. In a typewriting and tabulating mechanism, the combination with a carriage-releasing mechanism, of a revoluble brake normally ineffective, and means for rendering the brake effective when the carriage is released, said brake comprising a revoluble friction member, a cooperative. friction member, and a revolving driver whereby the revoluble friction member is driven,- said revolving driver being rotatable relatively to said revoluble friction member, and having means called into action at such rela-. 'tive movement to force the friction members together.

32. In atypewriting and tabulating mechanism, the combination with a carr1age-releasing mechanism, ofa revoluble brake normally ineffective, and means for rendering the brake efi'ective when the carriage is released, said brake comprising a revoluble friction member, a cooperative friction member, and a revolving driver whereby the revoluble friction member is driven, said revolving driver being rotatable relative to said revoluble friction member, .and having means called I into action at such relative movement to force the friction members together; said forcin means comprising means between the driver and the revoluble revoluble friction mem friction member to enable the driver to cam or wedge said revoluble friction member against the other friction member.

33. In a typewriting and tabulating mechanism, the combination with a carriage-releasing mechanism of a revoluble brake nor- ,mally ineifective,' and means for rendering the brake efi'ective when the carriage is released, said brake comprising a revoluble friction member, a cooperative friction member, and a revolvin er is driven, saidto said driver whereby the revolving driver being rotatable relatively revoluble friction member, and having means called into action at such relative movement to force the friction members together, "and centrifugally operating means to force said friction members still more firmly together.

JOHN G. McLAUGHLlN.

Witnesses:

JOHN C. SEIrERT, Krrrm FRANKFORT.

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