US1252891A - Stenographic type-writing machine. - Google Patents

Description

W. H. EBELHARE & G. ARVIDSON.

STENOGRAPHIC TYPE W RIT|NG lMACHINE.v APPLICATION FILED Nov. 22. Isle.

- Patented Jan. 8, 1918.

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I Q Wwf I w f I/NTORS w m Y v? E 6 I. f7 fg Wrafllornqs UNITED STATES PATENT OFFICE.

WILLIAM H. EBELHARE AND CLARENCE G. ARVIIDSON, OF INDIANAPOLIS, INDIANA, ASSIGNOBS TO THE STENOTYPE COMPANY, OF INDIANAPOLIS, INDIANA.

STENOGRAPHIC TY PE-WRITIN G MACHINE.

Specification of Letters Patent.

Patented Jan. 8, 191-8.

Application led November 22, 1916. Serial No. 132,845.

To all 'whom it may concern:

Be it known that we, WILLIAM H. EBEL- HARE and CLARENCE G. ARVIDSON, citizens of the United' States, and residents of Indianapolis, in the county of Marion and State of Indiana, have invented certaln new and useful Improvements in Stenographic Type-lVriting Machines; and we do hereby declare the following to be a full, clear, and exact description of the invention, such` as will enable others skilled in the art to which c of construction and combinations of parts as hereinafter set forth and pointed out in the claims. f

In the accompanyin drawings; Figure 1 is a transverse view o stenographic type- Writing machine showing an embodiment of ,our invention; Fig. 2 1s a side elevation dicated at 3, and carrying the parts of the operating mechanism. l

` The specific construction ofthe key lever and type mechanisms are not essential to an understanding of the ribbon actuating mechanism hereinafter described, but it may be y here stated that key lever and type mechanisms such jas disclosed in'our application Serial No. 125,225 may be employed. It will be understood however that the ribbon movin mechanism is actuaed from a universal ar and that the operation'of. the latter'is controlled by thekey levers.

Ribbon reels 4 are located `above the top of the casing 1 and the inking ribbon may pass from one of these reels to the other and past the printing means in a manner which is well understood. I

The ribbon reels 4 are mounted on vertical shafts 5 and the latter are provided with slots 6 which receive lugs 7 projecting from the hubs of the reels whereby the latter will be caused to rotate with the shafts. The top of4 the V.casing 1 is made with openings 8 through which the shafts 5 pass and bushing 9 for said shafts are disposed between the reels and the top of the inner frame 2. These bushings mayrest upon spring Washers 10 located upon the frame 2. Bearing sleeves 11 are secured to and depend within the frame 2 for the passage of the shafts 5 and to the lower ends of the latter, immediately below the sleeves 11, horizontally disposed beveled gears 12 are secured.

A horizontal actuating shaft 13 is mounted near its respective ends in suitable bushings 14 carried by the side Walls of the frame 2. Sleeves 15 are mounted securely to the shaft 13 which can slide and rotate in bushings 14 and to the inner ends of sleeves 15 beveled pinions 15*iL are secured for transmitting motion to the ribbon reel shafts 5. The two sleeves 15 are spaced on the shaft 13 by -a sleeve 16, fastened securely on shaft 13, thus making the shaft 13 with sleeves 15 and 16, and pinions 15, a fixed unit which slides in the bushings 14 to cause one of the pinions to move out of mesh with its gear Wheel and the other pinionto .move into mesh with its gear wheel. The intermediate 'sleeve 16 is providedeentrally with an annular ange 17 havingi'a beveled peripheral portion 18 to be engaged by the beveled' teeth 19 of a retaining member 20, so as to hold one or the other of the beveled pinions in mesh with its gear wheel while the other pinion is out of mesh with its gear wheel.

The retaining member 420 is pivotally mounted between the depending arms of a bracket 21 secured under the top of the frame 2, and the toothed end of said retaining member is retained in operative relation to the beveled iange 17 by means of a sprinfr 22,-the tension of which may be adjusted by means of a screw 23 passing through the top of the -frame 2.

The pinions on the shaft 13 may be shifted to move one of said pinions out of mesh with its gear wheel and the other pinion Y, a shank 33 bearing of into mesh with its gear wheel when the direction of travel of the inking ribbon is. to be changed, by moving the shaft 13 whlch carries said pinions longitudinally in the bushings 14. This may be accomplished automatically by means of mechanism such as described in our application Serial No. 132,846 or it may be accomplished manually as discolsed in our application Serial No. 132,612. In order, however, that some means shall be disclosed in this application for effecting the shifting of the gearing to change the direction of travel of the inking ribbon, we have shown manually operable means for this purpose. The manual shifting or ribbon reversing device shown in the drawlng comprises a. bifurcated arm 24 secured to the lower end of a shaft 25 and disposed to ernbrace the centrally located annular flange or wheel 17. The shaft 25 is suitably mounted in the framework of the machine and is provided with a knurled knob 26 projecting above the framework. It is apparent that by turning this knob, the bifurcated arm 24 will be moved in one direction or the other, and by its coperation with the flange or wheel 17 cause the pinionsrto be shifted as previously explained, to effect a reversal of the direction of the ribbon feed.

The rotation of the shaft 13 is effected by means of ratchet devicescontrolled by the movements of a universal bar 27, the latter being operated by the key levers 28. This universal bar is' disposed under `the key levers somewhat in advance of the pivotal mountings of said levers and as provided at its respective ends with arms 29, 30 pivotally attached to the frame 2 in line with the pivotal mountings of the key levers, as fully explained in our application, Serial No. 125,224. The arm 30 at one end of the universal bar is made with a finger 31 which projects upwardly beyond the pivotal support of said arm. One end of a spring 32 is attached to the frame 2 and its other end is connected with the finger 31,-said spring servingto retain the universal bar and the i parts actuated thereby in their normal positions and to return the same to such positions.

The shaft 13 is provided at one end with projecting beyond the adjacent said shaft in the frame 2, and on th1s=shank, a flanged hub 34 is located.

A ratchet wheel 35 having fine teeth is secured to the hub 34 and both may be secured' to the shank of the shaft 13 by means of a clamping nut 36 and washer 37. A plate or carrier 38 is loosely mounted on the hub 34 between the flange thereof and the ratchet -wheel and carries a springctuated pawl 3,9 to engage said ratchet whee This plate or carrier is provided in its lower part with an elongated slot 40 to receive a pin 41 projecting aterally from an upwardly and for- Wardly projecting finger 41 of the universal bar arm 30,-the connection between the pawl carrier 38 and the universal bar being thus located in front of the pivotal mountings of both the universal bar and the key levers. Thus when a key lever is depressed, the downward movement of the universal bar will cause the plate or carrier 38 to move downwardly and the pawl 39 to propel the ratchet wheel 38 thus turning the ribbon feed gearing and feeding the ribbon a short distance. A pivoted gravity dog 39a may be provided to prevent retrograde rotation of the ratchet Wheel and the shaft to which it is secured. It will be observed-` that the inking ribbon is fed on the down stroke of a key lever and after the type has printed upon the paper and a new surface of the ribbon will be presented ready for the next impression. The ribbon spools or reels are protected by means of a cover 42 mounted upon the frame or casing 1,-said cover being sustained properly spaced from the top of the casing by means of fianges 43 and posts 44, said cover being held removably in place by means of knobs 45 screwed on Shanks 46 of said posts.

Various slight changes might be made in the details of construction of ourinvention without departing from the spirit thereof or limiting its scope and hence we do not wish to restrict ourselves to the precise details herein set forth.

Having fully described our invention what we claim as new and desire to secure by Letters-Patent, is

l. In a typewriting machine, the combination with a frame, ribbon spool shafts, an actuating shaft, gearing between said shafts, and key levers, of a universal bar under the key levers and having arms pivotally attached to the frame, a ratchet Wheel on the actuating shaft, a pivoted carrier,va pawl mounted on said carrier to engage the ratchet wheel', and an operatin connection between said carrier and one o the arms of the universal bar.

2. In a typewriting machine, the combination with ribbon spool shafts, an actuating shaft, gearing between said shafts and key levers, of a spring sustained universal bar disposed under the key levers and having an arm at one end, a ratchet wheel secured to the actuating shaft, a pivoted pawl and a universal bar provided with arms pivoted to the frame, of a ratchet Wheel secured to the actuating shaft, a pivoted carrier, a pawl mounted on said carrier to engage the ratchet wheel, and a pin-and-slot connection between said carrier and one of the universal bar arms.

4. In a typewritng machine, the combination with a frame, ribbon reel shafts, an actuating shaft, and gearing between said shafts, of a universal bar, arms at respective ends of said bar having pivotal connection with the frame, a spring attached to the frame and to one of said arms above the pivot thereof, a pin projecting laterally from one of said arms, a ratchet wheel secured to the actuating shaft, a pivotally mounted pawl carrier having an elongated slot to receive the pin on the universal bar arm, and

a spring-actuated pawl mounted on the pawl carrier in position to engage said ratchet wh'eel.

5. In a typewriting machine, the combination with a frame, of vertical shafts, bushings for said shafts depending within said frame, ribbon reels mounted on said shafts, bushings between said reels and the frame,

sprin interposed between said last-mentione bushings and the frame, gears secured to the lower ends of said shafts, a horizontal actuating shaft, pinions on said horizontal shaft to mesh with said gears, and means for

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