US334503A

US334503A - worrall

Info

Publication number: US334503A
Authority: US
Publication date: 1886-01-19
Anticipated expiration: 1903-01-19

Description

(No Model.) I T. D. -WORRALL.

TYPE WRITING MAGHINE.

Patented Jan. 19, 1886.

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-B y A harney her, Waihinglon. a. c.

UNITED STATES PATENT Erica.

THOMAS D. WORBALL, OF WASHINGTON, D. 0., ASSIGNOR TO THE WOR- RALL MANUFACTURING COMPANY, OF BOSTON, MASS.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 334,503, dated January 19,1886.

Application filed February 16, 1885.

a citizen of the United States, residing at Washington, in the District of Columbia, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification, reference being had therein to the accompanying draw- My invention relates to improvements in type-writing machines, the object of which is theconstruction of a machine simple in its parts, practical in its operation, and comparatively inexpensive to manufacture.

My invention consists of a sliding frame in which a battery or series of type-carrying levers or keys are pivoted, said frame being adapted to travel back and forth in ways, the type being held from contact with the surface to be printed upon, until theprinting point or center is reached, by means of a guide-bar, which supports the outer edge ofthe typecarrying frame.

Other important features of my invention will be fully described hereinafter, and poi uted out in the claims.

Referring to the drawings, Figure 1 is a top or plan View of my device. Fig. 2 is a front View of the same. Fig. 3 is a side view of one of the type levers or keys.

A indicates the bed of the machine, on which are secured the brackets or supports B B, in which the bar 0 is mounted.

D is the typecarrying frame, the rear end of which is provided with apertures, through which the bar 0 passes, on which the frame D is moved to and fro, and by reason of its being secured at one side to the bar or rod 0 in ahinge-like manner I am enabled to swing it back and examine the progress of the work. The front end of the frame Dis provided with grooved wheels E, adapted to run on the bar F, said bar being secured to the base A, and

Serial No.156,063. (No model.)

recessed projection, an, adapted to receive the ordinary type, b, which is held therein by means of aset-screw,c. Theselevers, however, may be made of type metal and the letters cast thereon, or the common fiat letters may be soldered or otherwise rigidly secured to the lower end ofa solid projection, a, without departing from the spirit of my invention. The type-holding bars G are provided on their upper side with an arm or projection,d, to which the button or knob having theletter or character thereon is attached, the knob and projection just mentioned being sufficiently strong to permit the operator to take hold of the same and move the type and type-holding frame back and forth on the ways, and at the same time, while exerting pressure on the lever, to force it into the centering-slot when it reaches that point, as will more fully appear hereinafter. The front ends of thetype levers or keys G are cut away at varying depths, as indicated by the full and dotted lines, in order to give the proper spacing to the letters'or characters, as will more fully appear hereinafter.

d" is a metal plate secured to the under side of the type-carrying frame D, and is provided with two or more pins, 0, around which are placed coiled springs f, the upper ends of said springs being adapted to impinge against the under side of the metal plate 9, on which the front ends of the type-levers are supported, the object of which is to keep the front end of the bars from coming in contact with the bar F by their own weight, and also to return the type-lever to an elevated position and from contact with the printing-surface when said lever or key is released from the pressure exerted by the hand of the operator.

K is the inking-ribbon, secured to the spools L at each side of the frame, and passes directly underneath the type, said spools being provided with a pawl and ratchet or other suitable retaining devices which will hold the ribbon at the proper tension.

Having described the type-carrying frame and type levers or keys, I will now proceed to describe the de IiJ S by which the paper or othersurface to be rinted upon is moved forward the proper distance to accurately space thedistance between the letters or characters.

The guide-bar F, which supports the front end of the type-carrying frame, is provided at or near its central portion with a notch, 71, having inclined or beveled upper edges, into which the outer or front endof the type-lever is depressed when a character or letter is to be formed, said notch, being on a direct line with the printing or impression point of the type. h slanting or beveled off, and by making the lower faces of the front ends of the type-lo vers V or wedge shaped, as shown, the levers and type are more readily centered in the notch or slot 7:,and all rocking or tilting ofthe levers is prevented. The guidebar F is also provided with a guideway, 1', directly underneath the notch 71, in which is placed a suitable Sliding block, to which the pawl k is attached, said block and pawl being operated upon by a suitable spring, Z, which serves to hold the pawl and its block in an elevated position when not forced down by the type-lever.

M is a frame adapted to travel in ways on the base A, and in which the paper-carrying bed is moved, to space the distance between the lines of printing, by means of the setscrew 0.

P is a rack or ratchet bar secured to the front of the frame M beneath the guide-bar F, and is designed to be pushed forward by the pawl 7.: when said pawl is operated upon by the type-levers, and as said frame is moved forward it is held in position by the retaining-pawl m.

As before indicated, the ends of the typeholding levers are cut away, so as to force down the pawl It more or less in the guide 2', and thus accurately space the distance between the letters. For example, the levers which carry the wide letters, as \V M, &c., are not cut away, but left as indicated by the dotted line 1 in Fig. 8, so that the end of the type-lever will come in contact with the pawl as soon as it enters the notch h in the guide-bar F, and as the lever is depressed to form the letter the pawl 7; will be pressed down to the farthest point, which will move the rack and frame M the proper distance to space and form the wide letters. The full line 2 (see Fig. 3) on the end of the type-lever indicates the distance the levers are cut away to space and form the medium-sized letters which these levers carry, while the levers carrying the narrow letters, stops, numerals, &e., are cut away, as shown by the dotted line 3, Fig. 3, and impinge on the pawl k, to move the rackbar only one notch.

It will be noticed that the pawl 70 is operated upon by the direct downward thrust of the type-levers, and not by a side motion of the type or type-levers, thus insuring a positive movement of the paper-carryingtable to space the letters. The type may be left out of one By having the upper edges of the notch or more of the levers, so as to make them spacing-levers, by which, when brought to the printing center or notch h and manipulated by the operator, the paper will be moved over to give requisite spacing without forming an impression or printing on the paper.

\Vhen a line has been printed, the pawls 7c and m are raised, and the frame M drawn back by the springs R, the frame N moved over the proper distance to form the spacing between the lines, the pawls 7. and m are thrown into engagement with the ratchet or rack bar, and the printing operation continued, as heretofore explained.

It will be noticed that the ends of the typelevers are held up by the spring-bars and the guide-plate, so that they cannot be depressed to bring the type into printing contact with the ink-ribbon until said lever carrying the proper letter or character has been brought to the notch or printing-center hand is forced to enter it by pressure thereon from the hand of the operator, and the only precaution necessary is for the writer to see that he has hold of the proper type-lever. It will also be noticed that the type levers or keys are supported by and move upon a common center, and that perfectly straight lines with the proper spacings can at all times be produced, and that by the simple construction and arrangement of parts the machine is not liable to get out of order, and only one lever at a time can be operated to bring the type into printing contact with the paper.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. A type-writing machine consisting of a battery or series of type-holding levers or keys moving on a common center or pivot mounted in a sliding frame, as described, and adapted to be moved back and forth in suitable ways to and from the printing-point, as set forth.

2. A type-writing machine consisting of a battery or series of type-holding levers or keys mounted in a sliding frame, as described, in combination with a guide'bar having a notch into which the type-holding levers are depressed to bring the type into printing contact with the paper, as set forth.

3. In a type-writing machine, a guide-bar provided with a retaining-pawl and a verticallymovable operating-pawl, as described, in combination with the pivoted type-levers and paper-holding frame provided with a rackbar, as set forth.

4.. The guide-bar F,having the notch or slot h and pawl-guide i, in combination with the sliding pawl is, adapted to be moved up and down in said guide, the spring Z, ratchet-bar I, and frame M, whereby the surface to be printed upon is moved over to insure the proper spacing between the letters, as described.

5. In a type-writing machine, the pivoted type-levers having their front ends plain or In testimony whereof I affix my signature in cut away, as described, in combination with presence of two witnesses. the notched bar F, sliding pawl k, and rack- T bar P, whereby the surface to be printed upon THOS ORRALL' 5 is moved over one or more notches, as the case Witnesses:

may be, by the depression of the type-levers, MARY BARKER, as set forth. WM. W. HERRON.