US807919A

US807919A - Type-writing machine.

Info

Publication number: US807919A
Application number: US22719404A
Authority: US
Inventors: Eugene Fahl
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-10-05
Filing date: 1904-10-05
Publication date: 1905-12-19
Anticipated expiration: 1922-12-19

Description

No. 807,919. PATENTED DEC. 19, 1905. B. PAHL. TYPE WRITING MACHINE. APPLIOATION FILED 0015, 1904 2 SHEETS-SHEET 1.

on a m F M W E PATENTED DEC. 19, 1905.

E N I H C A M MG Pm H R W E P. Y T

APPLICATION FILED OCT, 5, 1904.

2 SHEETSSHBET 2.

i I INVENTOR 2 E Fahl M TTOB/VEV UNITED STATES PATENT OFFIOE.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Dec. 19, 1905.

Application filed October 5, 1904. Serial No. 227,194.

To all whom it may concern:

Be it known that I, EUGENE FAHL, a citizen of the United States, residing at the city of St. Louis, in the State of Missouri, have invented a certain new and useful Type-Writing Machine, of which the following is such a full, clear, and exact description as will enable any one skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to a type-writing machine, and more particularly to the type-bars and the mechanism for operating the same.

In the accompanying drawings, which show so much of one form of a type-Writing machine as is necessary to illustrate my invention, Figure 1 is a section on the line 1 1 of Fig. 5. Fig. 2 is a slightly-enlarged section through one side of the base of the machine, taken on the line 2 2 of Fig. 5. Figs. 3 and 4 are an enlarged side and edge view, respectively, of one of the washers for separating the type-bars. Fig. 5 is a section on the line 5 5 of Fig. 1, and Fig. 6 is a side view of the part shown in Fig. 2.

Like marks of reference refer to similar parts in the several views of the drawings.

10 represents the base of the machine. The

.base carries two side frames 11, which are connected by crossbars 12. Supported above the side frames 11 is the paper roll or platen 15. This paper roll or platen 15 is carried by any usual form of carriage. (Not shown.)

Situated between the side frames 11 is a movable frame which carries the type-bars and the actuating mechanism therefor. This movable frame consists of two side pieces 16 and a center piece 17. These pieces are connected by a pair of

combs

18 and 19 and also by a curved cross-piece 20, Which acts as a stop for the type-bars, as will be hereinafter described. The

pieces

16 and 17 of the frame are also connected by means of a cylindrical bar 21, which is rotatively mounted in said pieces. The central part of this bar 21 is somewhat flattened at the front side and has connected to it the key-bars, as will be hereinafter described.

The center piece 17 carries at its upper end a curved bar 25, which is square in cross-section, so as to fit the square openings formed in the centers of wedge-shaped washers 27. Each of 'these washers 27 has on one face a boss 28, which surrounds the square openings 26. The washers 27 are placed over the curved bar 25, and the type-bars are placed over the bosses 28 of the washers 27 The typebars 30 are provided on their ends with a double set of characters 31 in the usual manner. The inner end of each type-bar is made in the form of a hub 32, provided with teeth. These teeth on the hub 32 mesh with the teeth on a rack 33, each of said racks 33 being car ried on the upper end of an L-shaped keybar 34. The washers 27 also act as guides for the racks 33, as will be clearly apparent from Fig. 5. After the Washers 27 and typebars 30 are placed in position on the bar 25 the side pieces 16 of the movable frame are also placed over the said bar, and nuts 35 are placed on the threaded ends of the bar to hold the Whole in position. Each of the key-bars 34 has secured to it at the elbow a spring 36. This spring 36 is rigidly secured to the bar by soldering it thereto or in any other suitable manner. The springs are then secured to the flattened face of the cross-bar 21 by means of screws 37 The bar 21 is made rotatable in the

upright pieces

16 and 17, and it is provided near its central part with teeth 38. These teeth 38 engage with a worm 39, carried on the central upright 17. This worm 39 is provided with a milled head 40, by means of which it can be rotated to move the bar 21 on its axis, and thus change the tension of the springs 36. The forward ends of the horizontal portions of the key-bars 34 are provided with keys 41 in the usual manner. As the key-bars 34 vary somewhat in length, it will be necessary to make a slight variation in the size of the hubs 32 of the type-bars in order to give uniform pressure and stroke to the different keys. This variation, however, is so slight that I have not attempted to show it in the drawings.

The movableframe carrying the type-bars has pivoted to it four links 42, two being pivoted at one end to each of the side pieces 16. The opposite ends of the upper pair of links 42 are pivoted to lugs 43, carried on the side frames 11. The opposite end of the lower pair of links 42 are pivoted directly to the said side frames 11. This manner of supporting the movable frame allows it to move down, so as to shift from one case to another. The frame is held in its upward position by means of coil-springs 45. In order to prevent the accidental lowering of the movable frame, I provide at each side a pivoted cam-plate 46, pivoted to the side frame 11. This cam-plate 46 is provided with an L-shaped cam-slot 47,

which engages with a pin 48 in the lower end of the side piece 16. This normally and positively locks the frame against movement. The cam-plate 46 is also provided with a second L- shaped cam-slot 49, which engages with a pin 50, carried on the bars 51 of the shift-key. These bars 51 are pivoted at 52 to the base of the machine, and the two bars are connected by a cross-piece 53. As soon as the shift-key is depressed the action of the pin 50 on the cam-slot 49 swings the plate 46 on its pivot, so as to bring the vertical part of the slot 47 beneath the pin 48, and at the same time the key-bar 51 comes in contact with the pin 48, and thus the further movement of the shiftkey will force the frame carrying the typeloars downwardly, so that the machine is shifted from one case to another. The bars 51 are held in their normal position by means of springs 54, secured at one end to said bars and at the other to the base of the machine.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

1. Ina type-writing machine, the combination with a platen, of a frame movable toward and away from said platen, type-bars connected with said frame, key-bars for actuating said type-bars and carried by and movable with said frame, a spring for normally holding said frame in its position nearest said platen, and means for moving said frame away from said platen.

2. In a type-writing machine, the combination with a platen, of a frame movable toward and away from said platen, type-bars connected with said frame, key-bars for actuating said type-bars, a spring for normally holding said frame in its position nearest said platen, a lock for said frame, and means for moving said frame away from said platen.

8. In a type-writing machine, the combination with a platen, of a frame movable toward and away from said platen, type-bars connected with said frame, key-bars for actuating said type-bars and carried by and movable with said frame, a spring for normally holding said frame in its position nearest said platen, a lock for said frame, and means for moving said frame away from said platen.

4. In a type-writing machine, the combination with a platen, of aframe movable toward and away from said platen and normally in its position nearest said platen, type-bars carried by said frame and cooperating with said platen, key-bars also carried by said frame and actuating said type-bars, a lock for said frame, and means for releasing said lock, said means being also adapted to move said frame from said platen.

5. In a type-writing machine, the combination with a platen, of a frame movable toward and away from said platen, type-bars carried by said frame and cooperating with said platen, key-bars for operating said type-bars, a spring normally holding said frame in its position nearest said platen, means for locking said frame in its position nearest said platen, and means for releasing said lock and for mov ing said frame away from said platen.

6. In a type-writing machine, the combination with a support, of washers non-rotatively mounted thereon and provided with bosses, type-bars pivotally mounted on said bosses, and means for actuating said bars.

7. In a type-writing machine, the combination with a curved support, of wedge-shaped washers non-rotatively mounted on said support and provided with bosses, type-bars pivotally mounted on said bosses, and means for actuating the said bars.

8. In a type-writing machine, the combination with a support, of type-bars surrounding said support and provided with a key, racks engaging with the teeth of said bars, and washers between said bars, said washers acting as guides for said racks.

9. In a type-writing machine, the combination with a curved support, of wedge-shaped washers non-rotatively mounted on said support and provided with bosses, type bars mounted on said bosses, and provided with teeth, and racks engaging with the teeth of said bar and sliding between said washers.

10. In a type-writing machine, the combination with a platen, of a movable frame, typebars carried by said frame and cooperating with said platen, key-bars also carried by said frame and actuating said type-bars, means normally locking said frame against movement from said platen, and means for releasing said frame and moving it away from said platen to shift said type-bars from one case to another.

11. In a type-writing machine, the combination with a platen, of a frame movable toward and away from said platen and normally in its position nearest said platen, a spring to move said frame toward said platen, a lock for retaining said frame in its position nearest said platen,a shift-key,and means operated through said shift-key to release said lock and move said frame away from said platen.

In testimony whereof I have hereunto set my hand and afiixed my seal in the presence of the two subscribing witnesses.

EUGENE FAHL. [L. s.]

IVitnesses:

D. C. BETJEMAN, JAMEs H. BRYSQN.