US1656672A - Typewriting machine - Google Patents

Description

Jan. 17, 1928.

v R F. A. HART TYPEWRITING MACHINE Filed Jan. 27. 1926 WITNESSES 3 Sheets-Sheet 1.

INVEN TOR.

ML Alum A TTORNE Y Jan. '17, 1928. 1,656,672

F. A. HART TYPEWRITING MACHINE I Filed Jan. 27. 1926 s Sheets-Sheet 2 r I v M g IIIIIL'I A n MAM 25m Ill" W x i g Jan. 17, 1928.

F. A. HART TYPEWRITING MACHINE Filed Jan. a7, 1926 s Sheets-Sheet a INVENTOR. 9% MW WITNESSES ATTORNEY Patented Jan. 17, 1928. v

FREDERICK A. HART; OF NEW BRITAIN, GONNECTICUT,- ASSIGNOB TO BEMI ING'I'ON TYPEWRITER COMPANY, 01' II|ION, NEW YORK, ACORPOBA'IION DIP NEW YORK.

TYPEWRITING MACHINE.

Application filed January 27, 1926. Serial No. 84 ,068.

My invention relates to typewriting machines and it has for its principal object to provide improved means in the nature of tubulator mechanism for quickly positioning the carriage.

The invention is shown. applied to a machine resembling somewhat that described in the patent to Edwin E. Barney for typewriting vmachine, No. 1,473,920, November to 13, 1923, and another form 'of which is shown in the application of Edwin E. Barney for Letters Patent for typewrit-ing machine, filed July 5, 1924, Sr. No. 724,186. Said Barney patent and application show machines especially equipped for writing the toll bills of telephone companies with great ease and dispatch. In the machine shown in the present application, unlike the machine shown in the Barney atent and application, the column of to ls is accumulated by adding mechanism and the sum total oi said column is written at the bottom of the columnu Most of the individual tolls are in amounts less than one dollar, so that in the column in which these amounts are written the typewriter carriage in the great majority of instances needs to be brought, to begin writing, to the letter space position for tens of cents. But the totals frequently amount to more than a dollar, so that in Writing the total the carriage usually needs to be brought to the units of dollars position. As applied to this particular machine, my invention has for its specific purpose to Facilitate the bringing of the carriage to this units of dollars position for the purpose of writing the total.

tine form of the invention is illustrated in the accompanying drawings, all of which 4 are more or less fragmentary in character, so as to show only as much of the machine as is necessary to an understanding of my invention. 1

Figure 1 is a right-hand side elevation, 4 partly in section on the line 1-1 of Fig. 3. Figure 2 is a fragmentary section-on the line 2-2 of Fig. 3. I

Figure 3 is a lan view. Figures 4 an 5 are rear elevations, the former showing the space bar depressed and the mechanism in the resulting position, and the latter showing my tabulator key depressed and the mechanism in the resulting position.

Figure 6 is a view similar to a portion of Fig. 4, but showing the parts after the space key has been released. I

Figure 7 is a sectional view of a detail. The machine illustrated is in its main features a Remington No. 12 typewriter, or rather it is what is now known commercial-. ly as 9. Remington No. 21 vertical adder, this being a N o. 12 typewriter with an add- 1ng attachment capable of adding vertical columns but not including the cross footing mechanism.

The main frame of the typewriter includes a base 10, corner posts 11, and a top plate 12, the latter supporting stationary rails 13, on which by roller bearings 14 is sup ported a carriage truck 15. This truck supports a platen frame 16, in which is mounted a paper roller or platen 17 and on which are also mounted various paper feeding and controlling devices lettered generally 18. The usual spring drum 19 gives the carriage a tendency to travel leftward.

The machine is equipped with the usual letter and figure keys and types. The type bars operate-a universal bar not shown,-and' from said universal bar there projects rearwardly a frame 20 mounted at its rear end on arms 21 projecting upward from a rock shaft 22, these parts vibrating toward the rear and front of the machine at each key stroke. They are connected b a link 23 with a dog rocker 24, pivote at 25 and carrying anormally engaged stepping dog 26 and a normally disengaged fixed dog 27, constituting parts of an escapement of that type known as ordinary, that is to say,

the carriage steps on the up stroke of the key. The feed dogs engage an escapement wheei 28 mounted loosely on the rear end of a feed shaft which is journaled on a suit- 9: able frame 30. Said shaft has a back spac- 1 ing wheel 31 fast thereon and connected 7 after the ordinary manner of Remington escapement mechanism with the escapement wheel 28 by pawl and ratchet mechanism. loo The carriage can be set backward one space at a time by a back spacing key (not shown) which operates a pawl, which turns the wheel 31. The escapenient shaft carries at its forward end a feed pinion 32 which isms adapted to engage two rack bars 33 and 34, said rack bars arranged end to end. These rack bars have a mode of operation and a construction resembling in a general way the corresponding parts described in he the Barney patent and a plication above referred to, but differing therefrom somewhat in detail. As best shown in Fig. 3, brackets 35 and 36 are secured to the back rail of the truck 15 by means of screws 37, and these brackets support the ends of a rod 38. A

ieoe 40, pivoted along its forward edge on the rod .38, has its rear edge bent up to make a flan e 41, to which the first rack 33 is secure by screws 42. The piece 40 is normally pressed downward to hold the rack 33 in position for engagement with the pinion 32 by means of compression springs 43 seated in holes in a cross bar 44 which is mounted at its ends in up-turned ears of the brackets 35 and 36 and secured against rotation by ins 45, Fig. 3. 'The downward motion 0? the piece 40 is limited by adjustingscrews 46 screwed downward through said piece 40 and restingon the carriage rail or on a bar 47 of sheet metal which is usually present in that position in the Remin on machine. The whole construction is such that the rack 33 is normally in position to cooperate with the pinion 32 as shown in Fig. 1 "but it can be released by being lifted out of engagement, as shown in Figs. 4 and 5.

The second rack 34 is shorter than the rack 33 and abuts it on the right as shown. This rack is mounted on a piece 48 similar in all res ects, except as to length, to the piece 40, and its downward motion is limited b screws 46. It is not necessary ever to 1i this a rack and it is therefore permanently held down by a set screw 50, screwed through the bar 44 as shown in Fig. 2. The two pieces 40 and 48 are held against endwise isplacement along the rod 38 by means of suitable sleeves 51. As shown in Figs. 4 and 5, the racks 33 and 34 are mutilated so as to facilitate the writing of a particular form according to the general mode of operation explained in the Barney patent and application, the mutilations in t e present instance differing specifically from the prior ones, however.

The program of operation contemplated includes the writing of certain matter on the left-hand art of the sheet while the carriage is un er the control of the rack 33, and when this matter has been completed said rack 33 is released and the carriage is jumped until it is arrested by the engagement of the rack 34 with the feed pinion 32, as shown in Fig. 4. This is effected in the present instance, much as it is in the Barney patent and application, by means of a key or space bar 52. This bar is located, as usual in the model No. 21 Remington machine, in the keyboard, being supported by arms 53, Fig. 4, which are attached to arms 54, projecting from a rock shaft 55 which is pivoted at 56 in the base 10. Near its middle the shaft 55 has. projecting therefrom an arm 57 which anism is fully through certain adjusting devices 58 carries a stud 6O articulated with an angular lever 61, pivoted at 62 and including an upstanding arm adapted to act on 5. lug 63, bent off from the link 23. The whole construction is such that the space bar operates the do rocker 24 the same as the universal bar of the type bars. '64 is a returning spring for the lever 61 and the space bar.

According to the Barney invention an arm 65 has its forward end bifurcated to embrace the shaft 55 and it is secured to the arm 57 by means of a screw 66 so that this arm moves upward at each depression of the space bar. At its rear end the arm 65 has a push rod 67 pivoted thereto, which at its upper end is guided in the frame 30 of the escapement mechanism. The upper end of the rod 67 lies beneath a bar 68 in the nature of an angle bar, which is secured to the front face of the rack 33 by means of the same screws 42, which secure said rack bar to the flange 41. It will be noted in Fig.

3 that the bar 68 extends some distance to the right beyond the end of the rack 33 to which it is secured. The construction is such that whenever the space bar is depressed after writing the first part of a line on the bill the push rod 67 acting on the bar 68 raises the rack 33 out of engagement with the pinion 32, allowing the carriage to run.

to the left under the power of its spring until arrested, as shown in Fig. 4, by the first tooth of the rack 34 engaging a tooth of the pinion 32. It will be recalled that the space bar at the same time operates the ordinary carriage escapement so that on theup stro e' of the space bar the carriage takes one step to the left which will bring it into the position shown in Fig. 6. This is the position for writing tens of cents in the adding column.

An electric carriage return mechanism is partially illustrated. This is not essential, a

ut it is useful in a machine like the present, designed for very rapid work The mechshown and described in the patent to Frederick A. Hart dated December 29, 1925,'No. 1,567,590. It includes an electric motor conventionally illustrated at 70, said motor gearing to the carriage through mechanism including a clutch. Said clutch and the motor circuit are controlled by devices at the front of the machine. A bracket 71, Fig. 3, projects forward from the front stationary rail 13 and two rods, 72 and 73, have their right-hand ends guided in said bracket, their left-hand ends being connected with the controlling mechanism for the motor. The rod 73 has an arm 74 fixed thereon and adapted to be struck by a mar in stop 75 at the end of the leftward trave of the carriage. The arm 74 is thereby pushed a short distance leftward, resulting in closing the clutchand the circuit of the motor 70,

so that after striking the last printing key in a line, the carriage immediately moves back to its extreme right-hand position.

"riage and o ens the clutch and circuit.

Associated with. the devices just described are certain cover plates 78 and 80 mounted on the front rail or" the truck and which need not befurther referred to.

The adding mechanism is of the well known Remington construction. It is :tully shown and described suficiently so :tor the present purposes in the patent to Wahl, l lo. 1,270A71. dated June 25, 1018. But the present machine does not include those parts of the mechanism described in said patent whose functions have to do with cross footing, the present machine being capable only of vertical addition. The numeral keys wort: an

actuator including a master wheel 81, Fig. 3, which master wheel operates in succession the denominational gear trains oi 'a vertical totalizer 82, which totalizer is mounted on truclz 83, which by screwstll is connected with certain brackets secured to the end bars of the carriage truclr by means including screws 80, so that the truck 85% and totalizer 82 travel right and left in unison with i the typewriter carriage. lhe actuator frame work has for its main piece a casting 87 fastened to two brackets 88 cast integrally withthe top plate 1201f the typewriter. At its middle part this casting carries a pointer 90 which cooperates with graduations 91 on the casing cat the totalizer 82. The totalizer shown in the present instance, as will be observed from these graduations 9-1, is arranged to add in dollars and cents of United States money, with a blank space separating the tens of cents from the units oi? dollars.

in Fig. 3 the carriage is in the same position as in Fig. 6, namely, that which it occupies after the explanatory matter has been written and the space key has been depressed and released. lit will be noted in Fig. 3 that the totalizer is in position to add in tens oi cents. [is was said above, this is the position to which it is desired to bring the carriage in the vast majority of lines of writing in the special work for which the machine is designed. My improvement now to be described is designed to facilitate bringing the carriage to a point two steps to the right of that shown in Fig. 3, so as to write units of dollars.

1 The ordinary equipment of the Remington No. 21 machine includes a carriage release key 92, consisting of a sheet metal lever pivoted at 93 to the end bar of the truck 15 be apparent and having its forward end formed into a thumb or finger piece. This ke or lever 92 is guided by means of a headed screw 94, passing loosely through a slot 95 in the lever and passing also through a washer 96 and screwed into the bracket 85. Adepending arm of the lever 92 is connected by a push link 97 with a bell crank 98 pivoted at 100 to the platen frame 16 and having a rearwardly extending .arm. 101. Said arm 101 lies underneath a bail rod 102 which passes through arms 103 to which it is rigidly sccured by pins 104. The arms 103 are pivoted on the rod it at the back of the typewriter carriage. The construction is such that a depression of the release key 92 causes the rod 102 to swing upward about the rod 44. as an axis. The bar 68 which is mounted on the rack 33 has an ear 105 bent rearward therefrom, and overlying the rod 102 in such fashion that an operation of the release key 92 will result in raising the rack 83 out of engagement with the pinion 32, as shown in Fig. 5; but when the rack 33 is released by the space bar 52 as shown in Fig. l, it does not operate the bail rod 102.

The rod 102 carries a step 106 adapted, when said rod is moved upward as shown in Fig. 5, to strike a tired stop 10? so as to arrest the leftward motion of the carriage.

This fixed stop 10? is here shown as consistin of a sheet'metal bracket having a base ange that rests on the top plate 12, to which it is secured by screws 108, the upper part of the bracket arching forward over the rod 102, as shown in Fig. 3. The stop 100 may be any convenient sort or projection on the rod 102. In order to give it a suitable fine adjustment it is here shown in the form of a round nut, Fig. 7, threaded on to a sleeve 110 which surrounds the rod 102, to which it is fixed by a pin 111. 'llhe stop 106 can be adjusted a short distance right and left by screwing it along the sleeve 110, spanner holes being shown for the purpose. There are also shown mounted on the sleeve 110 a washer 113 and lock nut 11 1. to secure the adjustment, said lock nut being also shown with spanner holes.

in the normal position of the parts the stop 106 can ass under the stop 107, as will om Figs. 1 and 4:; but when the release key 92 is operated, as shown in Fig. 5, the step 100 will strike the stop 107 and arrest the carriage. in the specific machine here shown, these stops are so located as to arrest the carriage in the units of dollars position.

The paper or work sheet 115, a fragment of which is indicated in Fig. 3, has for its first or left-hand column a date column 116 repeated.

the pinion 32 through whichthe center line 118 passes. 'As soon a'sthe date is written the carriage'takes a jump until it is arrested tele hone. This name, for example, Chicago is t en written by striking the letter keys 0 the machine.- When it is finished the operator depresses the Fig. 4 and releases it, thus bringing the cari-iage to the position shown in Figs. 3 and' 6, whereupon the charge, in this instance 95, is written in column 121 and is added in the totalizer 82. It will be noted in Figs. 4 and 5 that the rack 34 has first two consecutive teeth and then three teeth are omitted, a blank space being left, followed by other rack teeth. The construction is such that after writing the 95 in column 121, the carriage automaticallyjumps two spaces and into position to write a certain symbol, such as x in column 122. In that step of the carriage following the writing of this symbol the'margin stop 75 moves the arm 74 and sets the carriage return mechanism into operation. This draws the carriage back to theright and line spaces the paper, whereupon .the operations just described are It. will be observed that all this takes place without the operator removing her fingers-from .the keyboard and in fact with hardly a pause in her work. The bill is written line after line until all of the items have been entered, the carria e immediately returni to the right at the end of the last line. T e operator is now ready to copy the total of the charges out o'f the totalizer 82. If, as theiamo'unt of this total is equal to or more tha'n onegklollar; she then depresses the release key92and movesthe. carriage leftward until arrested by the stops i106 and 107 and then rele'ases the key. Fig.5 *that this allows the last tootlr of the'rack 33 to drop intos the central interdental-space of the pinion 32,. this being the position for units of dollars. The operator then writesthe units of dollars, spaces across the decimal point by a stroke on the space bar and writes the cents of the total. Before 'writing the total, she strikes a subtract" key, notshown, setting the adding mechanismto subtraction. The writing'of ,the tbt til results in subtracting it from itself and from the totalizer, leaving the latter lea'it;

In case an occasional total should be as inuchasgor more than, ten dollars, the operator usesthe release key 92 in the same. manner as has been abovedescribed and then space bar, as shown in.

"is ordinarily thecase It will be seen from Lemma strikes'the back space key. This occurs infr uently,-however, in t is class of bills.

, arious changes may be made inthe details of construction and arrangements without departing from my invention.

5 What- I claim as new and desire to secure by Letters Patent, is

1. In a typewriting machine, the combination with a carriage having a tendency to travel in letter feed direction, escapement mechanism therefor, and a plurality of feed rack sections the first of which can be released independently of the second, of two means for releasing said first rack section, one of said means-allowing the carriage to run until arrested by the second rack sec-. tion, and a stop connected with the other said means and arranged to arrest the carriage short of the second rack section.

2. In a typewriting machine, the combination with a carriage having a tendency to travel in letter feed direction, escapement mechanism therefor, and a plurality of feed rack sections the first of which can be released independently of the second, of a key and connections operating to release said first rack section and to allow the carriage to run until arrested by the second rack section, a second key, a bar operated by said second key and having a carriage stop thereon, and a part connected with said first rack section andoverlying said bar, whereby said bar when operated releases said rack section.

3. In a typewriting machine, the combination with a carriage, escapement mechanism therefor, and a releasable feed rack, of a key, a bar on'the' carriage movable by said key, a stop on said bar, a fixed stop into the path of which said key: moves the first mentioned sto ,---.means whereby said bar may release said ack, and a keyin the keyboard of the machine adapted to release said rack independently of said stop bar.

4. The combination with a carriage and feed mechanism therefor including a releasable feed rack, of two flanges on said rack, a push rod acting on one of said flanges torelease the rack, a rod lying between the two flanges, and independent means for actuating said rod to cause it to act on the second flange to release the rack.

5. The combination with acarriage and feed mechanism therefor including a releasable rack and a letter-feednescapement, of two independent keys for releasing said rack, one only of said keys being ,connected to operate said escapement and'" a'ca'rriage stop controlled by the other'said keys Signed at theborougli of Manhattan, city

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