US555443A - Type-writing machine - Google Patents

Description

No Modl.)

B. GRANVILLE. TYPE WRITING MACHINE.

Pnted Feb. 25, 1896.

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l VUNITED STATES lPATENT OFFICE.

BERNARD GRANVILLE, OF NEY YORK, N. Y., ASSIGNOR TO ALBERT G.

' VCORRE, OF CINCINNATI, OHIO.

SPECIFIQATIONAI'orming part of Letters Patent No. 555,443, dated February 25, 1896. Application ned 0aober9,1894. smalto. 525,356. (No man.)

To @ZZ whom t may concern:-

Beit known that I, BERNARD GRANVILLE, a citizen of the United States of America, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a speciiication.

o The invention is an improvement upon the paper carriage of type writing machines. The carriage is of that class which reciprocates on ways in right lines having step-bystepmovement to shift the paper in its relation to a printing-point.

The invention consists in details of construction, as hereinafter specified, all of which have been devised for the purpose of simplifying the construction of the machine and rendering its action more certain. These details of construction are shown in connection with the paper-carriage in the accompanying drawings, in which- Figure l represents a plan view of the machine. Fig. 2 shows a carriage in longitudinal vertical section with the escapement and retaining-hook and other parts in front elevation. Fig. 3 represents a transverse section of the carriage on theline @om of Fig. 2. Fig. 4 is also a rear elevation illustrating the position of the bell and its operating mechanism. Fig. 5 is a rear elevation illustrating the adjustable stop and retaining-hook. Fig. Gis a cross-section of the carriage on line y y of Fig. 5. Fig. 6a is a perspective View of one of the paper-clips. Fig. 7 is a detail of the ratchet-bar and the fixed pawl-tooth to engage therewith.

In the drawings, A A represent side walls of the type-writing machine.

B B indicate the cross-bars of the frame which sustains the paper-carriage, the side bars being shown at C.

The paper-carriage is shown at D, having end frames d, a rear top rail e, and the papersupporting bands f, the upper rear ends of which rest on the rail e, while the lower forward ends are fitted into the groove fx, Fig. 6, of the front bar of the carriage, so as to slide along the same. struct-ion of these paper-clips. They are made Fig. 6a shows the con,-v

in two parts, f and flo, connected together at fm, the former or front part, f 10, carrying the spur 26, hereinafter described. The lower ends, which fit into the grooves f X, are shown at fw, Fig. 6. The spurs 26 are provided on the outside paper-clips. The intermediate clip, f 14, is simply a curved piece to direct the sheet to the bite of the rollers. Upon the inner face of the rear bar, 0,'of the carriagesupporting frame are pivoted two arms g g'. .They are on horizontal pivots and have limited vertical movement. The arm g carries the stationary dog of the escapement, while the arm g carries the movable dog. The two arms are held in engagement with each other by means of an extension 7L on the arm g,which extends under the inner end of thearm g.

The adjustment of the parts is regulated vby means of a set-screw 2, which is set in a threaded hole through the end of the arm and bears upon the extension 7L. This adjusts the detents in vertical relation to each other and in proper relation to the width of the ratchet-bar. IVhen the part g is elevated it carries with it the part g'. The liftingis for the purpose of operating the escapement. The carriage is moved from right to left of the machine by the tension of a spring (not shown) and the lifting of the arms g g' operates the escapement. The escapement mechanism is of special construction and operates in connection with a ratchet-bar 7c, the teeth of which extend horizontally. It is upon the back of the lower side of the carriage, so that the teeth pass in range with the detents of .the escapement.

Although both teeth ofthe escapement have vertical movement with the arms g and g', I prefer for convenience to them as being one Xed and the other movable. The Xed tooth 3 is on a vertically-arranged bar 4, and, as shown in Figs. 1 and 2, is held to the vertical standard 5 upon the arm g. On the inner end of the arm g is a standard 6. This carries a pawl 7 normally pressed to the right by a spring 8 and limited in its movement by adj usted set-screws 9 and 10 set in studs on the standard 6. The pawl 7 carries a detent 1l,

which, like the detent 3, is fitted to the teeth of the ratchet-bar 7c, as shown in Fig. l. The

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detent 11 is on a higher plane than the detent 3, the distance between the upper face of detent 3 and the lower face of detent 11 being a little less than the width of the ratchetbar, so that within the limit of operative movement of the detents in connection with the ratchet-bar the lower detent comes into engagement with the teeth before the upper detent leaves its engagement. Vhen the detent 3 is in engagement with the tooth o' the ratchet-bar, the carriage is arrested and held in place; but when it is dropped below the line of the ratchet-bar and the detent 11 is in enga-gement it yields (the tension of the spring 8 being much less than that ot the spring which impels the carriage) and allows t;;e carriage to slip to the left a distance equal to the space between detents, which is regulated by the screws 9 and 10; and this movement should occur immediately after the impression is made upon the paper, and while the impression is making the carriage should be held in place. Therefore the connection between the bars g g and the keylever mechanism should be so arranged as to accomplish this object. For this purpose the arm g is connected to a cross-bar G, which lies under the key-levers II. This arrangement is such that when the key-lever is depressed in the act of printing it raises the fixed detent into engagement with the ratchetbar and lifts the movable detent out of engagement. The return ofthe key permits the spring in to depress the arms and draw down the iixed detent out of engagement and the movable detent into engagement. This allows the carriage to move one step to the left. The bar G is of course operated also by the space-l;ey, and this key is arranged so that movement imparted to it beyond that necessary to move the carriage one step to the left will lit t both detents above the ratchetbar and allow the carriage to be moved freely in either direction. This is accomplished by means of the construction and arrangement of the detents in their relation to the ratchetbar, which permits them to be lifted entirely out of range of the said bar.

The arms g g' are set upon rock-shafts o and held thereon at any desired point by setscrews p, these shafts having their bearings in the front and rear portions of the frame which supports the carriage. The spring in is adjustable in respect to its tension by a thumbscrew 13.

lVhen the carriage is returned from left to right by the hand of the operator in the rapid use of the machine there is a liability to rebound, so that the detents of the eseapement miss one or two teeth and cause the line to begin out of vertical alignment with the be ginning of the other lines. To remedy this I have provided a supplemental hook-detent in connection witha movable stop. The movable stop is shown at M. It is on a toothed bar N arranged on the rear part of the frame which supports the carriage, the teeth being fixed to the left. The stop is held at any peint on the bar by means of the detent 14t on the bell-crank lever 15, pivoted at 16 on the stop-bloek which rides on the bar. The bell-crank lever 15 extends upward by the side of the thumb-piece 17 and between these two is a spring 18, which normally presses the detent 14 into engagement with the teeth of the bar. The detent holds the stop-block against the shock of the carriage, moving from left to right. Upon the block also is pivoted at 1G a hook 19 extending to the left and pressed normally downward by a springv 2O to engage with the pin 21 on the carriage. The arrangement of the pin in relation to the hook is such that the hook engages with the pin on the instant when the carriage is arrested by the stop-block. This holds the carriage against rebounding.

It will be understood that in order to freely move the carriage from left to right to begin a new line the detents of the esca-pement are swung out of engagement in the manner herctofore explained. The tail of the hook 1S) is connected by a rod 22 with a bar 23, which lies under the bar G, so that when the bar G is raised to permit the carriage to move with the escapement-detents the tail of the hook is lifted byits spring and the hook depressed. The bar G being so raised when the carriage is moved to the right the hook is in position to engage with the pin and hold the carriage; but the instant the bar G is lowered on the return of the escapement-detents to their normal. position oi' engagement the tail ot the hook is depressed by the space-bar and the hook itself is raised and held out of engagement with the pin, and the carriage is free to move as the escapement may permit.

I have preferably shown a toothed bar N in the form of a rod in Fig. 3, its teeth being cut in the upper side. The stop is formed to embrace the rod. This iigure also shows the arrangement in the rear part of the machine.

One of the papenclips is shown at point 25 in Fig. 1. This is on the right of the machine mounted on the rail e to move with the carriage, and I have provided upon it a spur 2t, which as the carriage moves to the lett comes in contact with a stud 27 on the stationary frame, Figs. 1 and C, and prevents the type from striking the metallic face oi' the paperclip and thereby being injured.

It will be understood that the end of the line of printing will be reached betere the clip-spur 2G comes in contact with the stud 27, and that the described arrangement is provided in order to prevent the type from striking the paper-clip should the operator thoughtlessly continue writing after the end of the line is reached.

The bell which signals 4the near completion ol' the line of printing is in my improved earriage concealed from view. It is shown in Figs. fl and G. It is attached to an arm 28 projecting inwardly from the front bar of the carriage supporting the frame.

On the end IOO IIO

of this arm is pivoted the hammer 29; The tail 30 of the hammer-shank projects upward into line with the striker 3l secured to one of the clips, and as the dog` rides over the tail of the hammer it raises the hammer and causes it to strike upon the bell. The arm or paperclip to which the bell-dog is attached is adjustable, and can be slid along the bar e to hold paper of varying widths, and as in nearly every instance the printing on paper extends nearthe edge whichis held by the clip the bell-dog, being attached thereto, is set automatically to announce the approach of the end of the line.

In the operation of the machine the detents when raised and lowered move in a slightlycurved line. (Shown extended in Fig. 2.) This causes the iixed detent to pass in this curved direction across the face of the teeth with the concave against the pressure, and

' thus the detent is made to wedge and prevent any lost motion.

I claim asmy invention- I. In combination with a type-writer carriage having a ratchet-bar, an escapement mechanism, consisting of a movable springdetent carried pivotally upon a standard which extends vertically across the ratchetbar, an independently-arranged iixed detent carried upon a second vertically-extending standard, said detents being movable with the standards across the face of the ratchet-bar, connection between the two standards and means for moving said standards to cause the detents to move across the said ratchet-bar all substantially as described.

2. In combination, the ratchet-bar, the arm carrying a movable pawl arranged to engage with the teeth in the side of the ratchet-bar, a second arm having a detent and an adjustable connection between the arms so that the said pawl and detent may be vertically adjusted toward or from each other, independently of the movement of the pawl, to suit the ratchet-bar, all substantially as described.

3. In combination in a type-writing-machine carriage, the ratchet-bar, the armv g having the movable detent, and an. extension h, arm g arranged with its end over the extension 7L, the adjusting-screw 2 on the said arm g carrying a iixed detent all substantially as described.

4E. The arms g and g' extending lengthwise of the carriage having a spring m pressing on one arm, said arms carrying detents, one fixed andthe other movable, arranged in the described relation to the ratchet-bar of the paper-carriage, an adjustable connection between said arms whereby the detents may be adjusted toward or from each other, inde- 'for controlling its movement, a stop or lim-v ent of the escapement,substantially as described.

6. In combination with the carriage of a type-writing machine and means for moving it from right to left, an adjustable stop carrying a catch and connection between said catch and a cross-bar, operated by key-levers, said stop and catch being arranged to limit the return movement of the carriage and to hold the same until released, all substantially as described.

7. In combination with the stop M having a detent arranged to engage the carriage, the escapement, a catch adapted to engage with the carriage vat the end of its return movement, a spring for pressing said catch into engagement with said carriage, and a connection with a bar as 23 controlled by key-levers, said catch being arranged to hold the carriage independent of the escapement all substantially as described.

8. In the escapement of a writing-machine carriage, a fixed detent arranged to swing on a curve across or through the teeth of a ratchet-bar, said curve being concave to the bearing-face of the teeth substantially as described.

9. In combination with the carriage, a toothed bar N, a sliding stop on said bar and a right-angular pivoted detent engaging said teeth, said stop having a linger-piece extending opposite one of the arms of the detent with an interposed spring, substantially as described.

lO. In combination with the carriage, a signal-bell and an adjustable paper-clip carrying a dog to operate the bell.

ll. In combination, the ratchet-bar, the iixed detent and oscillating pawl, the two movable supports therefor for operating the same across the ratchet-bar and means for adjusting the pawl and detent in relation to each other and to the ratchet-bar, said adjustment being in a direction transversely of the ratchet-bar and the said pawl and detent being thereby moved apart or toward each other.

12. In combination, the ratchetbar, the oscillating pawl, the detent and the independently-pivoted arms extending in opposite directions therefrom lengthwise of the carriage and means for operating them, the said pawl and detent being arranged at the meeting ends of the arms, substantially as described.

13. In combination,the carriage,the ratchetbar, the pawl, the detent, the two pivoted arms carrying the same and extending in opposite direc-tions, means for adjusting the arms relative to each other at their adjacent ends whereby the pawl and detent are moved toward or from each other and means for operating the arms substantially as described.

14. In combin ation,the carriage,the escapement, the catch for engaging the carriage and IOO IIO

means for controlling the eseapement and towhiehsaiddetent orpawl iseon11eoted,sub

catch whereby when the esoapement is thrown stantially as described. 1 o out of action the catch will be in position to In testimony whereof I :Lx 111 y signature hold the carriage. in presence of two Witnesses.

15. In combination in a type-Writer, the BERNARD GRANVILLE. ratchet-bar, the pawl, the detent and the piv- Witnesses: oted levers carrying the same, each of said HENRY E. COOPER,

levers having a vertical standard at its end JAMES M. SPEAR.

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