US848294A

US848294A - Ribbon mechanism for time-recorders, &c.

Info

Publication number: US848294A
Application number: US16552003A
Authority: US
Inventors: John Dey; Alexander Dey
Original assignee: Dey Time Register Co
Current assignee: Dey Time Register Co
Priority date: 1903-07-14
Filing date: 1903-07-14
Publication date: 1907-03-26
Anticipated expiration: 1924-03-26

Description

No. 848,294. YPATENRTED MAR. 26, 1907.

J, & A. DBY. RIBBON MECHANISM FOR TIME REOORDERS, 61:0.

APPLIUATION IILBD JULY 14, 1903.

wmvfssfs ATTOHNE m UNITED STATES PATENT orrron.

JOHN DEY, or SYRACUSE, NEW YORK, AND ALEXANDER DEY, or GLASGOW,

SCOTLAND, ASSIGNORS TO DEY TIME REGISTER COMPANY, OUSE, NEW YORK, A CORPORATION OF NEW YORK.

OF SYRA- Specification of Letters Patent.

ratenteu March 26, 1907.

Application filed July 14, 1903- Serial No. 165,520.

will enable others skilled in the art to which" it appertains to make and use the same.

This invention relates to a ribbon-guide;

and its object is to provide an improved means for guiding a traveling ribbon, band, or web such that correct alinement and travel thereof may-be secured.

The invention will be hereinafter described in .detail and the novel features thereof pointed out in the claims.

In the accompanying drawings, Figure 1 is a top plan view showing the ribbon-guide used in connection with the inking-ribbon of a time-recorder for which it is especially adapted. Fig. 2 is a detail in side elevation of the guide-rolls shown in Fig. 1, the ribbon being shown in section. Fig. 3 shows the application of the same principle for controllin the travel of a relativelywide band or web Fig. 4 shows the application of the principle to a vertically-traveling web.

Similar reference characters refer to similar parts throughout the several views.

Referring first to Figs. 1 and 2, the spools of the ribbon mechanism of a time-recorder are shown at and 11, respectively. These spools are mounted upon studs 12 and 13 ,carried by frame 14, and they are adapted to be alternately rotated to wind the ribbon'first' are gears 16 17, adapted to mesh alternately at different positions of the shaft with crownears, shown in dotted lines as being carried y the lower'fianges of the spools 10 and 11, v

respectively. The shaft is rotated by means of a spring-pawl 18, which engages a ratchet-wheel 19 on the shaft, the springpawl being actuated by a lever 20, provided with a bearing in a suitable part of the frameyielding connection, as by a spring 27.

work, as'at 21, and adapted to be reciprocated in order to actuate the spring-pawl by a bell-crank lever pivoted at 22, the-short arm 23of which is adapted to engage the end of lever '20. The long arm 24 of this bell crank lever is connected to an arm 25 on an actuating-shaft 26, preferably through a 7 Thus it (ran beseen that when the actuating shaft is rotated in the direction indicated by'the arrow the bell-crank lever will be rocked in its pivot and the pawl 18 forced inwardly and downwardly, thereby rotating the shaft 15 through a space proportional to one tooth of the ratchet or one stroke of the pawl. lVith the parts in the position illustrated the gear 16 at the left end of the shaft will be in engagement with its spool, while the gear 17 at the other endis out of engagement, and the ribbon would be wound on the spool 10 ,while i outer arms 29 29, each of which carries at its end two pins 3030, between which the ribbon A third arm of the lever, as at 31,

passes. is notched or forked at its end to engage a pin 32, carried by a lever 33, pivoted to the framework and adapted ,when swung upon its pivot to engage alternatelycollars 34 35, rigid with the shaft '15. nected at one end to the upper end of the arm A spring 36 is con- 31 and at the other end to a pin 37, carried by the lever 33 below its pivot. The general operation of this reversing mechanism does not differ from well-known devices of this character. A rib or projection is carried by the traveling ribbon A, near" each end thereof, and when the ribbon: is exhausted on one spool this projection will engage the twopins" 30 at the corresponding side of the meclianism and swing the three-armed lever a s the ribbon is fed along. connection-between the arm 3 1 of the lever and the swinging lever 33 the lever 33 will swing upon its pivot, striking the opposite one of the collars 34 and 35 from the one with which ,7 it had been before'engaged and shifting the shaft 15 longitudinally to bring the actuating mechanism into engagement with the other Through the described spool, thereby reversing the direction of the I'LbbOIl. The spring 36 tends to hold the lever 33 on whichever side of its pivot it may be -swung and prevents accidental moveinent thereof.- Y

A section of a printing-wheel is indicated at B,' and of the platen at C, as convenient 'illultrations of the printing mechanism with Idle of this frame and at'right angles thereto I the traveling ribbon.

is attached a stud 44, which passes loosely through the tube 45, carried by an arm 46, projecting from the-framework. Where the posltion of the parts is such that the frame with its stud might tend to Work away from the tube, this may be prevented by a pin 47,

assing through the stud below the arm 46. ush a ribbonrguide may be interposed at any desired point in the path of the ribbon and may .be advantageously used with a ribbon traveling in any plane-that is, whether the. axes of the spools are horizontal, vertical, or at any other angle to the framework. It is particularly adapted, however, for use with a ribbon traveling in a vertical plane, with the axes of the s ools vertical, inasmuch as under such conditions the ribbon is especially likely to deviate from its path or getout of 'alinement, thereby preventing the proper action of the printing mechanism and eventually stopping the working of the machine. The reason for this will be apparent upon considering the effect of the guide-rolls upon The frame 40, which carries the rollers 41, being loosely mounted in the tube 45 is free to turn about therein or to swing on an axis assing through the center of the stud 44. his stud 44, as stated, is preferably attached to the frame at exactl the longitudinal and horizontal centers t ereof, and the ribbon 4 should be so adjusted u on its spools that its center will be exactly a ove the cen- I ter of the shaft, so that if the shaft were ex tended upwardly through the center of the frame and the center 0 the rollers it would pass through the center of the ribbon. This may perhaps be mostclearly stated by saythat a-plane passed through the longitudinal central line of the ribbon coincides with or includes the axial lineof the stud, which isthe axial line of'thepivotal movement permifibd to the rollers. When thus adjusted, the ribbon will travel in stable equilibrium under all conditions, and if its alinemerit is disturbed by any-imperfection, by its own weight, or by an other cause it will be immeequally divided, one-half on each side of the stud or axis, and consequently the lon itudinal axes of these rollers remain at rig t angles to the direction ,ofmotion of the ribbon;

but if the ribbon is for any cause moved to one side or the other, de arting from its intended aline'ment the si es of the rollers to which the ribbon has 'moved will have a greater portion of the rotatin force exerted upon them, and consequent y the rollers, with the frame, will be swung around, so that the longitudinal axes of the rollers will no longer be at right angles to the line of feed of the ribbon. The'result will be that the rollfeed back until its'longitudinal' central'line, coincides again with the axis of the roller sup ortin frame. When this is accomphs ed, t e force exerted upon'the rollers .upon each side of the pivot-stud will again be balanced and the desired normal condition be reestablished;

v In Fig. 3 the ribbon or ,web A is shown as of greater width, and a set of guide-rollers is provided in conjunction with each edge thereof. Each set of rollers pulls the web toward itself, andthe eby the web is ke t stretched, at the sa e time insuring t e proper alinementthefeof. As in the former case, rollers 41 42 are mounted in a frame 40 IIO and are drawn together by springs43. In this case, however, the studs 44 are diflerently positioned with relation to the frame,

their osition dependin upon the amount 'of the ri bon or web whic it is desired should, be held within the bite of the rollers in order to keep the web properly stretched and alined'. The distance to which each set of rollers ulls the Web toward itself is determined y the position of its stud, will pull until there is the same width of web to the right or left of. thestud asthere is length of rol er to the left orfright of the stud, or if the stud be one-half inch or'oneinch from the inner end of the web the-web will .be pulled until its. edge is one-half inch or one inch beyond the center of the stud. Thesame thing will occur on both sides, so that the web'is kept in a stretched condition, and if it b6 from any cause disturbed in its condition it will be gradually drawn back again. There must be' pressure between the rollers to grasp the Web, and the pressure must be proportioned to the weight of the web or band. This pressure may be obtained from the roughness of the surface of the rollers, which may be of sandpaper, or rubber, &c.

When the wr or band is suspended verti-.

cally, as in Fig. 4, the lower rollers are not needed, as its own weight will keep the web stretched vertically. The principle involved is exactly the same as that of Figs. 1 and 2 and is that normally equalparts of the web are on each side of the stud, as indicated in the drawings, so that the position of the stud determines the hold that the rollers will take of the web. If you move the stud nearer to the end of the roller, its hold on the web will become still less, and if you move the stud farther from the end of the roller its hold on the web will increase in exact proportion. Under some circumstances it may be found necessary in connection with the construction shown in Fig. 4 to supply additional means for keeping the web in contact with the rollers. This may be done by a holdingplate, by doubling the web around the rollers, or in various other readily-suggested ways.

Obviously the invention here disclosed may be embodied in different manners in a variety of organizations without departing from the scope thereof.

' Having described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. Inribbon-guiding mechanism, a roller over which the ribbon is adapted to pass, said roller being ivotally mounted to swing substantially in t e plane of the ribbon, and

means for holding the ribbon in contact therewith, the inclination of the axis of'said roller with res ect to the longitudinal center line of the rifibon being controlledby the relative areas ofcontact between the ribbon and the roller upon the two sides of the pivot ofthe latter.

2. In ribbon-guiding mechanism, in combination, a pivotally-mounted su porting .member, and two rollers journale therein adapted to receive therebetween the ribbon,

the entire surface of said rollers within the- 4.. In rihbon 'gniding-mechanism, in com.

(1 the effective lengthbination, a pivotally-mounted su porting member, and 'two' spring-pressed'rol ers jour-r naled therein adapted to receive therebe-* tween-the ribbon, the entire surface of said rollers within the range of contact of said ribbon being substantially parallel, and said pivotally-mounted member being free from contact with said ribbon.

5. In ribbon-guiding mechanism, in com bination, a pivotally-mounted su porting member, and two spring-pressed ro ers journaled therein adapted to receive therebetween the ribbon, the entire surface of said rollers within range of contact with said ribbon being substantially arallel, and ,the effective length of said rol ers exceeding the width of said ribbon.

6. In ribbon-guiding mechanism, a pivotally mounted roller,. a second sprmg-. pressed roller adjacent thereto, the surfaces of said rollers being substantially parallel and the ribbon being adapted to ass therebetween, and means whereby the inclination of the axis of said'first-mentioncd roller with respect to the longitudinalcenter line of said rib member and two rollers journaled thereon adapted to receive the ribbon therebetween, the entire surface of said rollers within range on is controlled-by the relative areas of contact between said ribbon and roller upon of contact with said ribbon-being su'bstantially-parallel, and the'efiective length thereof exceeding the width of said ribbon,- and said pivotally-mounted member being free I from contact with said ribbon.

bination, a pivotally-mounted supporting member, two rollers journaled thereon adaptros ed to receive the ribbon therebetween, the

entire surfaces of said rollers within rangeof contact with said ribbon. being substantially parallel, and springs arranged to hold said rollers in contact with the ribbon, the incli nation of the axis of said rollers with respect to the longitudinal center line of said ribbon being controlled by the relative areas ofcontact between said ribbon and said rollers upon the two sides of the pivotof the same.

9. In a ribbon-guiding mechanism, in combination, a pivotally-mount'ed frame, a pair .of rollers journaled in said frame, the surfaces -of said rollers being substantially par allel and the ribbonbeing adapted-to passtherebetween, and a pair'of s rings, onearranged at each end of said rol ers'an'd 'adapted to hold the same in contact with said ribhen, the inclination of the axis of said ivotally-mpunted frame being determine by the relative areas of contact between said ribbon and the rollers upon the two sides of the pivot of the frame.

1Q; In a ribbon-guiding mechanism,

combination, a 'pivotally-mounted frame, combination, apivotally-mounted roller over means upon Whichsaid frame is pivoted, 'a which the ribbon is adapted to pass, springpair of rollers jou'rnaled within said frame, and springs for pressing .the ends of each of said rollers in the direction of the other, said rollers being adapted to receive the ribbon therebetween, the entire surface of said rollers Within range of contact with said ribbon being substantially parallel and the length of said rollers exceeding the Width of said ribbon, withrespect to the longitudinal center line of .said ribbon being controlled by the relative areas of contact between said ribbon and said rollers upon the two sides of the pivot of the 'frame.

11-. In a ribbon-guiding mechanism, in

the inclination of the axis of said rollerspressed means for engaging and holding the ribbon throughout'its width in contact therewith, and means whereby the inclination of the axis of said roller with respect to the longitudinal center of the ribbon is controlled by the relative areas of contact betweenth-e rib-' bonand the roller upon the two sides of the pivot of the latter.

In testimony whereof tures in the, presence of two witnesses.

JOHN DEY. ALEXANDER DEY. Witnesses:

B. E. SNYDER, MILLIE HILDE.

we affix our signa-