US315701A - belden - Google Patents

Description

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E. s. BELDEN. TYPE WRITING- MAGHINE.

No. 315,701. Patented Apr. 14, 1885.

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WITHEEEES- (No ModeL) 3 Sheets-Sheet 2. E. S. BELDEN. TYPE WRITING MAOHINE.

Patented Apr. 14, 1885.

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E. S. BELDEN.

TYPE WRITING MAGHINE.

No. 815701. Patented Apr. 14, 1885.

UNITED STATES PATENT @rricn,

EDYVIN S. BELDEN, OF SAN FRANCISCO, CALIFORNIA.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters-Patent No. 315,701, dated April 14:, 1885.

Application filed March 22, 1884. (N0 model.)

To ctZZ whom it may concern.-

Be it known that I, EDWIN S. BELDEN, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in TypeWVrit-ing Machines, of which the following is aspecification.

My invention relates to improvements in type-writing machines in which the paper carrying roller is moved from right to left above an inking-ribbon,while the types mounted upon levers operated by keys placed in banks produce the desired impressions upon thepaper at the same timethe carrieris moved forward one space at a time.

The object of my invention is to improve and simplify the mechanism by which the space following; aword is obtained at the same time that the last letter of the word is printed. This object I accomplish by the means illus trated in the accompanying drawings, forming a part of this specification, and in which- Figure 1 is an elevation of the rear side of a type-writer, showing my improvements applied thereto, yet I have not deemed it necessary to illustrate a complete type-writing machine, but only so much as may be necessary to illustrate the application of my improvements. Fig. 2 is a sectional elevation of the same, viewed from the opposite or rear side. Fig. 3 is a vertical cross-sectional view of the tripping-pawls. Figs. 4, 5, and 6 are detail views.

Similar letters of reference are used to indicate like parts throughout the several views.

A represents one of the guide-rails along which the carriage and its connected parts are moved back and forth.

B is the box containing a coiled spring, the action of which draws the carriage from the right to the left hand side, which spring is connected to the carriage in the usual manner.

0 is the ratchet-bar constructed and attached to the movable carriage in the usual manner.

D is the frame-work supporting the bear ings E, in which are journaled the ends of the shaft F, supporting and forming part of the vibrating pawl G, the upper end of which engages with the teeth of the ratchet-bar.

His a coiled spring wound around the shaft of the pawl and acts to'throw' the said pawl forward and out of contact with the ratchet teeth.

I is a horizontally-projecting arm attached 5 to the pawl-shaft, and provided with two laterally-projecting arms,'J J, to the outer ends of which rods K K are secured, and extending downward are connected to a transverse bar, L, extending from side to side'of the machine beneath the lever-bars M, pivoted at the rear of the machine, and which are operated to cause the leverrods carrying the type to strike against the inkingribbon. The two outer lever-bars, N N ,are not connected with the type-carrying levers,'but are extended past the bank of keys, and are connected at their front end by a transverse space-ban 0, (see Fig. 3,) in the usual manner.

To the rear of the pawl G, I pivot the sup- 7o plemental pawl P,which is pressed against by a coiled spring, Q, likewise attached to the pawl G and which operates to throw the point of the said pawl 1? forward when released from contact with the ratchet-teeth, and the 7 forward movement of this supplemental pawl is limited and controlled by a device to be presently described.

To the face of the pawl G, I secure a bent bar, R, which forms a bearing for one end of a pin, S, the opposite end of which is pivoted in the pawl P. Upon this pin is pivoted a bent or bell-crank lever, T, the upper end of which is sufiiciently removed from the face of the supplemental pawl P to permit the saidpawl being forced backward by the spring Q, when the pawl is released from the ratchetbar, a distance equal to the space of one tooth. The horizontal portion of the lever T is extended backward and is operated upon from 0 beneath by the straight lever U, pivoted to the frame D by a pivot, V, and connected at its outer end by an adjustable rod, \V, to one of the outer lever-bars, N, as shown in Figs. 1 and 2. A flat spring, X, attached to the bent bar B, presses against the head or upper end of the bell-crank lever T and operates to throw the said bell-crank back to its original position after it has been moved by the lever U. The head of the lever T is made some what long in a direction at right angles to the vertical arm of said lever, and is provided verse bar L, it will, by means of the connect-.

upon the face next to the pawls with a rabbet, Y, asshown in Figs. 4, 5, and 6.

The Operation of my improved space-forming attachment will be as follows, to wit: While performing the operation of printing words, the various keys will be pressed down in the usual manner, and as the lever-bars M are brought down uponand depress the transing-rods K, operate the pawl G and cause it to be drawn into contact with' the teeth of the ratchet-bar O, and at the same time the sup plemental pawl P will be drawn back out of contact with the ratchet-bar, when the coiled spring Q will force itbackward until its further progress is arrested by its coming in contact with the head of the bent or hell crank lever T (see Fig. 5) and the point of the pawl will be and the supplemental one enters it, the retractive power of the spring operating the carriage will draw the carriage and ratchetbar forward the space of one letter or until the supplemental pawl strikes against an offset, Z, on the main pawl, when the further progress of the carriage will be arrested and the whole mechanism will be in proper position forthe printing of the next letter. When the last letter of a word is to be printed, the key representing the given letter is depressed, and atthe same time the space-bar O is like wise depressed, and the inner end of the lever U is raised up until it strikes against the horizontal arm of the bent lever T, and by moving it upward throws the head of the vertical arm outward far enough to permit the supplemental lever to move back into the rabbet Y, which will bring the point of the supplemental pawl back the space of two teeth or notches from that which it originally occupied. When the pressure upon the key and space-bar is released, the action of the carriages spring will cause the said carriage to be moved forward two spaces-that is to say, one tooth or space for the blank space between the words,and one space for or on which the first letter of the next succeeding word may be printed.

In order to form independent and single blank spaces I detach one of the banked keys from its present type'lever connection, or add a bank-key, or, by preference, disconnect the key marked lowercase from its attachment to the mechanism moving the paper-roller at right angles with the printed lines when a change of case-letter is required, the action of which upon the pawl-moving mechanism is then the same as that of the other keys.

Having thus described my invention, what I claim, and desire to secure by Letters Patent,

1: In a type-writing machine, the combina tion, with a traveling carriage provided with rack G, and the pawl G, hav-ing a supplemental pawl, P, pivoted thereto, of the space-bar O, the pivot-ed spring-lever T, having a rabbeted head and adapted to act directly at all times as a stop to limit the movement of the supplemental pawl, and mechanism, substantially as specified, for actuating said lever T from the space-bar by pressure on said bar, substantially as described.

2. In a type-writing machine, the combinaspace-bar 0, having lever-bars N N,'the lever U, and the adjustable rod W, substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand and seal.

EDWIN S. BELDEN. 8.]

Witnesses:

WILMER BRADFORD, O. W. M. SMITH.

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