US1530765A - Typewriting machine - Google Patents

Description

March 24, 1925.

E. s. DODGE TYPEWRITING momma Filed Jun 2, 1925 2 Sheets-Sheet 1 INVENTDR @MM. ev 3% A? HIP; ATTORNEY WITNEEEEE March 24, 1925.

E. s. DODGE TYPEWRITING KACHINE Filed June 2, 1923 2 Shoets$heet 2 INVENTDR filth/.4 d

9M A} HIE ATTURNEY WITNESSES Patented Mar. 24, 1925.

UNITED STATES PATENT OFFICE.

ELBERT S. DODGE, OF ILION, NEW YORK. ASSIGNOIR- TO REMINGTON T'YPEWRITER COMPANY, OF ILION, NEW YORK A CORPORATION OF NEW YORK.

TYPEWRITIN G MACHINE.

Application filed June 2,

To all whom it may concern:

Be it known that I, ELBERT Donon, a citizen of the United States. and resident of Ilion, in the county of llerkinier and State of New York, have invented certain new and useful Improvements in Typewriting Machines, of which the following is a specification.

My invention relates to typewriting machines, and more particularly to tabulator mechanism.

The main object of the invention, generally stat-ed, to provide simple, strong and efficient tabulator mechanism.

Another object of my invention is to provide a simple, strong and efficient single key tabulator which may, when desired, be readily embodied in standard Remington machines as a substitute for the tabulator mechanisms now employed therein without material modification of such machine except such as are effected by the substitution of one character of tabulator for another.

Still another object of my invention to 25 provide strong and reliable mechanism for preventing a rebound of the carriage when it is arrested by its tabulator stops.

To the above and'other ends which will hereinafter appear, my invention consists in the features of construction, arrangements of parts and combinations of devices set forth in the following description and particularly pointed out in the appended claims.

In the accompanying drawings, wherein like reference characters indicate corresponding parts in the various views,

Figure 1 is a fragmentary fore-and-aft vertical sectional view of a typewriting ma chine embodying my invention.

Figure 2 is a detail front elevation of a portion ofthe tabulator mechanism and some of the associated parts.

Figure 3 is a fragmentary detail top plan view, with parts in section, of the key controlled means by which the tabulator is actuated.

Figure 4 is a detail fragmentary top plan view of the key actuated stop and some of the associated parts; the view showing the parts in actuated position with the cover plate of the housing removed. a

l have shown my invention in the present instance embodied in a standard Remington 1923. Serial No. 642,891.

machine, but have illustrated only so much of said machine as is necessary to arrive at an understanding of my invention in its embodiment therein. While the invention may be readily incorporated as asnbstitute for the tabulator mechanism, either column or decimal selectors, now employed in such machines, it should be understood that the in vention is not restricted to its use therein but may be employedin typewriting or like machines generally and wherever found available. l

The frame of thevmachine comprises a base 10, corner post-s ll'and top plate .12.

A power driven cairriage 13 of the usual construction is lllOllllliGl :011 rollers, including the rollers -14,tcitravel'over the top plate from side to si ofthe machine. Ex tending rearwardly ron and fixed to the carriage are bracket arms-'15, which support the usual column stop' bar. 16 on which column stops 17 are mounted; The column stopsin the present instance are situated atletter Space intervals on the stop bar and may be shifted,

individually rearwardly on the bar from the inoperative position, indicated by the forcmost stop 17 in Fig. 1, to the operative position, indicated by the stop in the rear thereof in this View.

A feed rack 18 is mounted on the carriage in the usual manner, beingcarried on arms 19 pivoted at 20 on the carriage. The feed rack is normally" s1 fling pressed down into effective position vuere it engages a feed pinion 21. The feed pinion is mounted on a shaft (not shown) supported. in a bracket 22 fixedly supported above, the top plate of the machine. Said shaft is operatively connected at its rear end to an escapement wheel 23, controlled in the usual manner to afford a step-bv-step letter feed movement of the feed pinion 21 and the carriage controlled thereby.

In the usual standard Remington machines the carriage is released at'each tabulating operation by the combined carriage release and retarding device constructed and operated as follows:

A sheet metal frame 24 is pivoted at 25 to swing on a bracket 26 secured to the top plate of the machine. This frame 21% has a portion 27 formed with bearing openings to receive a shaft 28 that is adapted to turn therein. The forward end of this shaft carries a pinion 29, and the rear end thereof is connected in the usual manner with a member of a retarding device that turns in a body of shot contained within a drum secured to the frame 24 by screws 31. The frame 24 is pivotally connected at 32 to a depending link 33 that has its lower end pivoted at 34 to a crank arm 35 fixed on a rock shaft 36. This rock shaft is mounted at its ends in brackets 37 secured by bolts 38 and nuts 39 to the base 10 of the machine. The crank arm 35 is also pivotally connected at 40- to a forwardly extending link 41 pivoted at its forward end, as indicated at 42, to a depending car 43 on a universal release bar 44. A second link 41 is connected in alike manner at its forward end to the universal release bar near the lefthand end thereof; the rear end of the link being connected to a second depending crank arm 35 on the left-hand end of the rock shaft 36. Said release bar is provided with upturned ends 45 pivoted on across bar 46 supported at its ends in the base of the machine. A contractile spring 47 is connected at one end to the universal release bar and at its other end to a key stem guide 48, to return the universal bar and the parts connected there with to normal position.

In standard Remington machines a series of key controlled angular levers 49 are mounted to turn on the cross bar or pivot rod 46. The rear edges of the depending arms 50 of said levers coact with the forward edge of the universal release bar to actuate it, and thereby swing the frame 24 and release the feed rack from its pinion; at the same time connecting the retarding device with the feed rack to retard the free movement of the carriage.

In said standard Remin ton machines each lever 49 is connected with a key stem 51.1novable vertically in guide openings 52 and 53 in guides 54 and 48 respectively; each key stem being provided with a tabu lator key at the upper end thereof. Moreover, in such construction, the depending arm 50 of each lever 49 is connected with a rearwardly extending link, that in turn is connected at its rear end to a tabulator lever carried in a tabulator frame for controlling a tabulator stop. In the resent construction I eliminate the usual ta ulator frame, the tabulator levers, the stops controlled thereby and the link connections between the levers 49 and the tabulator levers. Moreover, I use but two of the widely separated levers 49 of the usual series. These two levers are maintained properly positioned and spaced apart onthe rod 46 y collars 55 held on the rod by set screws 56. The key stems'51 connected to said levers are united at their upper ends by a single wide tabulator key 57 arranged in the rear of thelast row of printing keys 58 in the keyboard.

As far as has been described, an actuation of the tabulator key merely actuates the combined carriage releasing and retarding device to free the carriage from control of its escapement mechanism. In accordance with my present invention I utilize the actuation of the releasing device to transmit motion to the tabulator stop, and to the anti-rebound detent ofmy invention, now about to be described.

It will be seen that the frame 24 is provided with an upwardly extending ear 59 in which is received the forward bent end of a connecting link 60; the rear bent end of this link extending through an opening 61 in a crank arm 62. This crank arm has its hub fixed to a rock shaft 63, the arm extending downwardly from said shaft and controlling its rocking movement. The shaft receives its support in bearing openings in a special casting, housing or tabulator frame 64, and is held against endwise displacement in said bearings by collars 63 held on the shaft by screws and coacting with the inner side walls of the housing. The housing 64 is secured by screws 64 to a top plate of the machine and has a cover plate 65 detachably secured thereto by screws 66. Contained within the housing 64, and fixed to the rock shaft 63, is an upwardly projecting crank arm 67 rounded at its upper end, as indicated at 68 in Fig. 1. This arm is returned to and normally held in the Fig. 1 position by a spring 69. The upper rounded end of the arm 67 is seated in the bearing slot 70 in a slide or stop carrier 71. In the present instance this member 71 is in the nature of a block mounted in a depression 72 in the upper side of the housing beneath the cover plate 65. The member 71 is guided by the walls of said depression for horizontal sliding movement fore-and-aft of the machine from the Fig. l to the Fig. 2 position. The upper side of the member 71 has a transversely extending depression 73 therein in which is received a transversely extending stop bar 74. Said bar is fixed at its ends by screws 75 in depressions in. the upper face of the housing eneath the cover plate 65. This bar coacts with the rear and front walls respectively of the depression 73 to limit the fore-and-aft sliding movements of the member 71.

The member 71 is provided with an integral forwardly projecting tabulator stop 76 formed with a right-handflat face with which an operative column stop 17 is adaptad to co-act to arrest the travel of the carriage in its movement from right to left, as will hereinafter more clearly appear. The slide member, block or slide 78, that is guided in its fore-and-aft movement independently of the slide 71 by the walls of said cutout. The slide 78 is provided with a transversely extending depression 79 in the upper s de thereof which is adapted to register. with the depression 73 in the slide 71. The stop bar 74 extends through the depression 79, although a separate stop pin 80 is carried by the slide 78 to coact with the slide 71, and thereby limit the forward movement of the slide 78 relatively to the member 71. The forward edge of the slide 78 is beveled or inclined rearwardly from left to right, as indicated at 81 in Fig. 4. The left-hand end of the beveled edge terminates in an abrupt 'rearwardly extending engaging face 82 adapted to be projected behind, or to the right of, a column stop 17, as shown in Fig.

,4. In this position the detent prevents a rebound of the carriage as the stop 17 coacts with the key controlled tabulator stop 76.

.A coiled expansion spring 83 bears at one end against the slide 71 and at its other end against the slide 78, to normally maintain said slide 78 in the position shown in full lines in Fig. 4, relatively to the slide 71.

In actuating the tabulator the operator depresses the key 57, thereby transmitti g a swinging motion to the frame 24 WlllCl is effective to release the carriage. The swinging motion of the frame also actuates the rock shaft 63 through the link 60. The rocking motion of the shaft shifts the arm 67'and slides the member 71 forward to bring the stop 76 thereon into the path of the operative column stop 17. The anti-rebound detent member 78 at this time moves forward with the member 71 tothe full line position in Fig. 4. The carriage having been released will advance to the left carrying the rear edge of the first operative column stop 17 into contact with the bevel 81 on the 'member 78. As the carriage advances shown in this figure, the force of the spring 83 is effective to snap the detent forward to the full line position, thereby bringing the stop face 82 on the detent behind the arrested column stop 17. The arrest of the carriage having been thus effected the tabulator key 57 is released and the springs 47 and'69 are effective to return the key 57 and the parts controlled thereby to normal position. This re-establishes connection between the feed rack 18 and the feed pimon 21, and

carries the detent members 78 back with the sllde 71, withdrawing the parts 76 and '82 from engagement with the coacting column stop 17. a

t will be observed that by my invention I have provided a simple, strong and effective tabulator and anti-rebound construction'that may be readily embodied in standard Remington machines without material modification of said machines, except to substitute devices of my invention for those now in use. It will be understood, .moreover, that I have utilized parts that are now embodied in such machines to coact in a novel manner with the devices I have substituted for those ordinarily used. It will be seen, therefore, that the tabulator mechanism of the present invention. may be readily'employed, when desired, as a substitute for the ordinary constructions, at comparatively small -cost.

What I claim as new and desire to secure by Letters Patent: I 1. In a typewriting machine, the combination of a carriage, acolumn stop carried thereby, a. key controlled sliding block 2. In a typewriting machine, the combination of a carriage, a series of adjustable column stops carried thereby, a key controlled combined carriage releasing and carriage retarding device including a swinging frame controlled by said key, a slidin carrier connected with and moved by sai swinging frame, a single tabulator stop carried by said carrier and projected by the sliding movement of the latter into the path of said column stops, and a spring pressed anti-rebound detent mounted for sliding movement on said carrier.

3. In a typewriting machine, the combination of a tabulator ke arranged at the rear of the keyboard of tlie machine, a pair of angular levers actuated by said key, a universal carriage release bar with which said angular levers coact, a carriage releasing device actuated by said universal release bar,

a tabulator stop operatively connected to said releasing device and projected thereby to operative position, and a carriage carried column stop coacting with said tabulator stop.

4. In a typewritlng mach ne, the combina tion of a tabulator ke arranged at the rear of the keyboard of t e machine, a pair of angular levers actuated by said key, a universal carriage release bar with whichsaid angular levers coact, a carriage releasing device actuated by said universal release bar and comprising a swinging frame, a rock shaft, a link connecting said swinging frame and rock shaft, a tabulator stop controlled by said rock shaft, and a co-operative carnage carried column stop.

5. In a typewriting machine, the combination of a carriage, a column stop carried thereby, a key, a carriage releasing device including a swinging frame controlled by said key, a rock shaft controlled by said frame, a slide controlled by said rock shaft, and a tabulator stop on said slide and cooperative with said column stop.

6. In a typewriting machine, the combination of a carriage, a column stop carried thereby, a key, a carriage releasing device including a swingingt frame controlled by said key, a rock sha a link between said frame and shaft to effect an actuation of said shaft by the frame, a crank arm on said shaft, a sliding carrier controlled by said crank arm, and a tabulator stop formed as a part of said carrier and cooperative with said column stop.

7. In a typewriting machine, the combination of a carriage, a column stop carried thereby, a key, a carriage releasing device including a movable frame controlled by said key, a rock shaft controlled by said frame, a crank arm on said shaft, a sliding carrier controlled by said crank arm, a tabulator stop carried by the carrier and cooperative with said column stop, and an antirebound detent, carried by and adapted to slide relatively to said carrier and to engage behind said column stop when the latter is arrested by the tabulator stop.

8. In a typewriting machine, the combinathereby, a key, a combined carriage releasing v and retarding device including a swin 'n frame controlled by said key, a rock s a t.

controlled by said swin ing frame, a crank arm on said shaft, a sli ing carrier engaged and controlled by said crank arm, an integral tabulator stop carried by the carrier and co-operative' with said column stop,'and a s ring pressed anti-rebound detent carrie by and adapted to slide relatively to said carrier and to engage behind said column stop'when the latter is arrested by the tabulator stop.

9. In a typewriting machine, the combination of a tabulator ke arranged at the rear of thekeyboard of the machine, a pair of angular levers actuated by said key, a universa-l carriage release bar with which said angular levers coact, a combined carriage releasing and retarding device including a swinging frame controlled by said universal release bar, a tabulator frame, a rock shaft mounted in said frame, a crank arm on said shaft and by which it is actuated, a link connecting said crank arm and swinging frame to rock the shaft by said frame, a second crank arm on said shaft, a slide mounted in the tabulator frame and with which said second arm on the rock shaft coacts to move.

the slide to operative position, a tabulator stop on said slide which coacts with said column stop, and a spring pressed antirebound detent carried by said slide and-

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