US315702A - Type-writing machine - Google Patents

Description

(No Model) B. S. BELDEN,

TYPE WRITING MACHINE,

No. 315,702. Patented Apr. 14, 1885.

WITNEEEEE zowmc ymi Urn'rnn STATES PATENT TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 315.702 dated April 1%, 1835.

Application tiled March 27, M84. (N0 model.)

To all 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 Type-\Vriting Machines, of which the following is a specifica- 131011;

My invention relates to improvements in type-writing machines in which the papercarrying roller is moved in a horizontal direction from right to left above an inking-ribbon, while the types mounted upon levers are operated by keys and key-bars to produce the desired impressions upon thepaper, and at the same time permit the carrier to be moved for ward one space at a time.

The object of my invention is to provide an improved means of obtaining the proper space at the end of a word at the same time that the last letter of said word is printed. This object I accomplish by the means illustrated in the accompanying drawings, in which Figure 1 is a rear view of a portion of the typewriting machine known as the caligraph, showing my improvement applied thereto. Fig. 2 is a cross-sectional view through the same.

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

A represents one of the guide rails along which the carriage and its connected parts are moved back and forth; B, the spring-rod, the action of which draws the carriage from the right to the left hand side of the frame,which spring-rod is connected to the carriage in the usual manner.

The carriage and its connected paper-carrying roller are held in their set position by the ratchet-bars C C and pawl D, which lets go every time a key is struck and catches again, and in the interval the action of the coiled spring-rod B and its connecting levers and rods, to be hereinafter described, pulls the carriage and paper along the space of one letter or notch.

The rear end of the spring-rod B is carried through the frame of the machine, and upon its outer end is keyed a lever-rod, E, the upper end being provided with aconnecting-rod, F, extending to the pin G upon the inner or fixed ratchet-bar, C, and as the pawl D, attached to the vibrating rod H, which is moved in the usual manner, is thrown into and out of contact with the slip and the fixed ratchetbars, the carriage is moved forward along the guides, and the letters are printed.

My improvement is made as follows: The fixed ratchet-bar Cis made in the form shown in cross-section in Fig. 2, having a rabbet formed in the lower outer face thereof, which receives the slip ratchet C, the said slipratchet being held in place by the slots at and set-screws b, as shown in Fig. 1. Upon the upper part of the fixed ratchet are cast the outwardly-projecting lugs or pins G and I, and in these lugs is pivoted a strip of metal forming a downwardly and outwardly extending flap, J, having at one end a small lug, K, which extends down and rests against the fixed ratchetbar 0 between two outward]y-proiecting lugs, L and M, (see Fig. 1,) one on each ratchetbar. At each end of the main frame-work of the machine I pivot a rod or rock-shaft, N, having near its center an inwardly and upwardly projecting lug or finger, O, which extends up under the flap J, as shown in Fig. 2. Near either end of the rock-shaft I attach the crank-arms P,connected by the rods Q to the lever-bars R, extending from front to rear of the machine, and pivoted near the center of their length bya pivot, S, as seen in Fig. 2. The forward ends of these two lever-bars are connected by a cross-bar which forms the space-bar T,which may be operated independently ofany keys or type-levers.

The vibrating rod H,which carries the pawl engaging with the ratchetbars, is attached by its base to a horizontal bar pivoted at either end to the rear of the machine, and having side arms, V, (unconnected with any type-bar or type-lever,) extending to the front of the machine and connected by a cross-bar, W, which extends beneath the usual key-bars pivoted to the front of the machine and connected at their rear ends to the type-levers. If desired, these side arms, V, may be provided with a separate space key for forming single blank spaces or permitting the ratchetbar to move but one space or notch at a time and without causing a letter to be printed.

The operation of my improved space-forming mechanism will be as follows, to wit While performing the operation of printing letters the various keys will be pressed down in the usual manner, and as the key-bars are brought down upon and depress the trans-' verse bar W it will, by means of the connecting side bars and vibrating arm H,operate the pawl D, causing it to be drawn into contact with the fixed ratchet-bar 0, while at the same time a letter is printed, and the slidebar 0, when released by the pawl, is drawn forward upon the set-screws b the space of one tooth, when the lug L, striking upon the flap-lug K, stops the forward motion of the ratchet. This forward motion of the ratchet is produced by the action of a small coiled spring connecting the two. ratchet-bars in the usual manner, and not shown in the drawings. When thepressure upon a key has been removed, the action of the spring X, connecting the pawl-arm H with the main frame-work,

will draw the said pawl back to its original position, when it will engage the slip ratchetbar at the tooth immediately succeeding the one with which it was engaged before the. letter was printed, and as this backward motion is made the action of the spring-rod B will draw the carriage forward the space of one letter or notch. WVhen the last letter of a word is to be printed, the key representing the given letter is depressed, and at the same time the space-bar T is likewise depressed, which action causes the said last letter to be printed, and at the same time causes apartial revolution of the rod N and a raising of the point of the finger O, which will cause the hinged flap J to be lifted up until its lug K clears the lug L on the slip-lever, when the action of the aforesaid coiled spring placed between and connecting the two ratchets will causethe slip-ratchet to move forward the space of two letters or notches, or until the end of the slip-bar strikes against the lug M on the fixed ratchet-bar. When the pressure upon the key and the space-bar is released, the action. of the spring-rod will draw the carriage forward the space of two notchesthat is to say, one tooth or space for the blank space between the words, andone space for or on which the first letter of the next succeeding word may be printed.

It should here be remarked that when the carriage is drawn forward and the slip-ratchet is held stationary by the pawl the pressure of the spring 0 upon the lever-bars R will allow the flap-bar and its lug K to resume their original position, with'said lug K between the two lugs L and ML Having thus described my invention, whatI claim, and desire to secure by Letters Patent, 1s

1. In a type-writing machine, the combination, with the paper-carriage, of two adjacent ratchet-bars, O 0, provided with lugs L M, one of said ratchet-bars being fixed and the other movable, the vibratory pawlD, flap-bar J, having lug K, the rock-shaft N, finger O, space-bar T, and connecting mechanism, substantially as shown and described.

2. In a type-writing machine, the combination, with the paper-carriage, of the ratchetbars 0 C, provided with lugs L M, the vibratory pawl D, flap-bar J, having lug K, the rock-shaft N, having finger O, the crank-arms P, connecting-rods Q, pivoted side lever-bars R, and space-bar T, substantially as shown and described.

' In testimony that I claim the foregoing I have hereuntoset my hand and seal.

EDWIN S. BELDEN. [L. s] Witnesses:

WILMER BRADFORD, O. W. M. SMITH.

Images