US1193073A - Type-wkiteb - Google Patents

Description

A. C. ROEBUCK.

IYPE WRITER.

APPLICANON min nmza. m4.

Patented Aug. 1, 1916.

3 SHEETS-SHEET l- BEL-illlllil 5 I E J I Miam A. 3. 9053mm TYPE WRITER.

APPUCATION HLED MN. 28. I914.

Patented Aug. 1, 1916.

3 SHEETS-SHEET 2.

A. C. BOEBUCK.

TYPE WRITER.

APPHCAYION FILED MN. 28. 19M. 1,193,073. Patented Aug. 1, 1916.

M 3 SHEETS-SHEET 3. 7

.accoinplishmcnt of ALVAH C. ROEBUCK, 0F WOODSTOCK. ILLINOIS.

TYPE-WRITER.

Bpecification of Letters Yatent.

Patented Aw. 1.1916.

Application filed January 28, 1914. Serial No. 814,850.

To all whom it may concern:

Be it known that I, Anviii C. ROEBUCK, a citizen of the United States, residing at 'oodstock. in the county of McHenry and State of Illinois. have invented certain new and useful Improvements in Type-\Vriters, of which the following is a specification.

This invention relates to a typewriting machine and more particularly to that portion hIiOWIl as a tabulator.

The principal object of the invention is to provide. a new and improved formof mechanism of this class which is simple in construction and effective and efficient in operation.

Among the objects to be accomplished are the provision of means to release the escape ment mechanism when the typewriter is operated; to provide a combined tabulator and margin stop; to provide improved means for preventing the rebound of the carriage; to provide a construction by means of which the tabulator stops may be easily locked in position; and to provide a yielding connection whereby the tabulator stop will be pressed into engaging position if the stop proper should engage the tip of one of the stops to prevent it temporarily from being, forced into the engaging position.

For the attainment of these ends and the other new and useful objects. the invention consists in the construction. combination and arrangement of the several parts generally shown in the accompanying drawings and described in the specification. but more. particularly pointed out in the appended claims.

in the drawings: igure 1 is a rear elovation of a tabulator mechanism constructed in accordance with the principles of my invention as applied to a typewriter. part of the typewriter being omitted for clearness. Fig. 2 is a side elevation of the tabulator key levcr. Fig. 3 is a plan view of the tabulator mechanism. Fig. l is a perspective view of one of the tabulator stops. Fig. 5 is a perspective view of stop levers. Fig. i) is a perspective view of the spring holder and limiting member mounted on one end of the tabulator bar. Fig. T is a detail view of a portion of a ta ulator mechanism with the .movable margin stop engaging the fixed 8 is a detailsectional margin stop. Fig.

n of Fig. i), Fig.

view talvcn on the line i is a detail sectional ew taken on the linc .l of Fig. and Fig.

sectional view taken on the line 10-10 of Fig. 3. I

In this invention the tabulator action is produced by drawing the ordinary pawls of the escapement mechanism from engagement with the escapement feed wheel whereby the typewriter carriage may move freely from right to left, in the direction of the ordinary feed until an adjustable tabulator stop mounted on the tabulator bar engages with the movable tabulator stop which is operated by the tabulator key.

Inthis embodiment of the invention a carriage frame 5 is mounted for transverse movement in a typewriter frame designated generally by the reference numeral 6. At the extremities of the carriage 5 are end plates 7 to which is connected at fixed rod 8 and a pivotally mounted tabulator bar 9. Mounted upon this tabulator bar (considered from the front of the machine) is a left hand margin stop 10 and a right hand margin stop 11. The tabulator bar is formed with teeth 12 on opposite sides of the bar and on top with characters indicating the position of the teeth with respect to .the ends of the carriage, or point. The margin stops 10 to the printing and 11 are provided with a pivoted spring-pressed engaging lever 13 by means of which their position may be readily adjusted and fixed 'with respect to the tabulator bar. Also mounted and adjustable on the tabulator bar 11 are a number of tabulator stops 14, one of which is clearly shown in Fig. 4. These stops consist of members with a slot 15 and are adapted to be inserted over the bar with the slot engaging the teeth thereof. The upper end of the stop is provided with a perforation it) by means of which it may be easily grasped and removed from the tabulator bar. ()ne of the extremities is formed with a projection 17 which, when the tabulator bar is in position, engages beneath the rod 8 which extends between the carriage ends 7 and prevents the removal or disphn-emcnt of this tabulator stop with respect to the tabulator bar. To position or remove the stop the tabulator baris rotated to the inclined position shown in dotted lines by Fig. 9. whereupon the stop 14 will just clear the rod 8 and permit the free movement thereof with respect to the tabulator bar.

In order to hold the tabulator bar n i0 is a detail proper position a stop member 18 is p051 tioned upon the bar by means of a slot 19, and this member is formed with two lateral project-ions both adapted to engage the rod 8, a shown more clearly in Fig. 10, one of the steps 20 engaging the rod to limit the rotation of the tahulator bar in one direction, as shown in dotted lines by Fig. 10, and the other projection '21 being adapted to normally engage the rod 8 to limit the movement of the tabulator bar in the other direction. The tahulator bar is held in this latter position by means of a spring 22, one end of which is attached to a hook 2 5 of the member 18 and the other end to a fixed memher 2- secured to the carriage frame.

Pivotally mounted on the end members 7 are arms and 26, the latter of which is provided with an engageable army 27 projccting above the end plate 7. These arms support a carriage rack 28 and the rack is held in position by means of a spring 2E) attached to one of the arms 26 and to a fixed point 30 of the carriage frame. The downward movement of the carriage rack is adjustable and is limited by means of an adjusting screw 31 inserted through one of the arms 26 and bearing upon the tabular bar 5) with a locknut 32 for iolding it in any adjusted position An escapement pinion 33 is mounted in the frame and meshes with the carriage rack 28. Secured to or formed integral with the escapemcnt pinion is an eseapement wheel 34.

A tabulator key lever 35 is pivotally mounted in the frame of the machine with the forward end preferably at the side of the character keys of the typewriter. A le-- ver 36 is pivotally mounted on the rear frame of the machine, and connecting this lever and the key lever 3.7 is a link 37. Mounted on a pivot pin 38 at the rear of the machine and extending toward the lever 36 is a movabletahulator stop 3!? having an up-turned tabular stop proper 4U. (onnected to or formed integral with the tabulator stop and inclined from the free extremity toward the tabulator stop proper is a rebound check it, the end of which is slightly less in height than the tabulator stop 40 and is spaced from it slightly more than the thickness ofthe tabulator stops 1 4 which are mounted on the tabulator bar. Extending laterally from the pivoted tahulator stop 3!) is an arm 42. Resting upon this arm is a member 43 freely mounted on the pivot pin 38 with its free end extending adjacent the free end of the tahulator stop 35). and being provided at its free end with a slot This member 43 is formed with an arm 4.3 extending beneath the arm 42 of the tabulator stop 3!). and a spring 46 is disposed bet ween the arms 42 and tending to press them apart. or. in other words. tending to hold the member 435 in contact with the arm -12. At the end of the lever 36 is a pin 47 which is adapted to enter the slot i of the member 43 whereby this member may he raised, and at the same time causing the [abulator stop 39 to be raised through the spring 46 so that the tabulator stop proper 40 will be moved into the path of the tabulator stops H on the tabulator Projecting laterally from the arm 4?) of the member 13 is a pin 49 for controlling the escapement pawl. Also mounted on the pivot pin 38 is an arm 66 having a stop proper 67 disposed in close proximity to the stop proper 40 of the tabulator stop 35). This arm 6,6 is provided with a notch 68 in its upper surface, and mounted on the frame of the machine is a plate (99 with a projecting portion 70 which adapted to engage in the notch 68 and hold the arm (36 in fixed position with respect to the tabulator bar against upward movement. The stop proper (i7 is normally in position to engage projecting member 71 on the margin stop 10 '(see Fig. 7). The end of the tabulator stop 35) may also b beveled at 72 as a continuation of the rebound stop, if desired.

At one end of the tabulator bar 5*. (see Fig. 1) it is formed with a recess 9" into which an adjustable pivot screw c extends, and seated in the recess is a spring T with a ball T between the outer end of the spring and abutting the end of the pivot s row 7 to prevent the spring from resisting the turning movement of the tabnlator bar. should the spring catch in the bottom of the recess 1 To control the escapcment mechanism a member 50 is disposed below the escapement .wheel 34 and mounted upon this menr her is a pawl :Ll having a tooth 5'3 adapted to engage the escapcmeut wheel. being pro- 'i'iiittl with a slot .35 to permit the longitudinal movement of the pawl. the slot 3: and opening :34 adjacent the tooth to permit both the longitudinal movement of the pawl and a movement toward and fr m the cs apement wheel. Pins 05 and 5b are secured to the member 50 and project through th openings 53 and 534. respectively. to permit the longitudinal movement of the pawl with respect to both pins and a'pivotal movement of the pawl toward and from the escape-ment wheel about the pin as an axis. A single spring I)? is attaihed to a projection of the pawl and to the memher 50 which tends to press. the tooth up-- wardlv in engagement. with the wheel 34, and also to move the pawl in the direction of the spring in the openings. This pawl is also formed with an arm 59 adjacent the forward end. and pr jecting through a slot (30 in the member 50 is a pin 31 mount ed on one arm of a lever 63;" which is also pivoted in the member .M the pin being adapted to engage the arm 59 of the pawl, and by the movement of the lever 62 to move the pawl downwardly or out of engagement with the escapemcnt wheel 3-1. The other arm (33 of the lever 62 is adapted to be engaged by the pin 49 of the'memher 43 of the tabulator mechanism, and .a spring 64 attached at on end to the member and at the other end to an arm of the lever (32 tends to press this lever 50 that the pin (31 will not interfere with the ordinary action of the pawl 51.

In operation it is necessary only to depress the forward end of the'tabulator key '35 whereupon the link 37 will draw the end of the lever 30 downwardly. causing the other end of the lever to move upwardly, carrying with it the member 43 by reason of the pin and slot connection therewith. This upward movement of the free end of the member 43 causes a resilient upward movement of the tabulator stop lever 39 and the upward movement of the member l3 moves the pin 49 upwardly in accordance therewith. This pin 49 engages the levei"(r2.' causing the pin til thereof to move downwardly in the shit (50 eng'agime the projection 59 of the pawl 51 and moving the tooth 52 of the pawl out of engagement with the escapement wheel 34. This permits the spring or motor of the typewriter to drawthe typewriter carriage across the frame until one of the tabulator stops 14 engages with the movable tabuhv tor stop 40, whereupon the tabulator keyis released, the escapement wheel is engaged by'the pawl and the tabulator stop is-moved ollt of engaging position with respect to the stops on the tabulator bar and the ordinary feeding operation of the machine may be resumed. If it happens that the top of the tabulator stop proper It) should engage the end of one of the tabulator stops H when the tabulator key is operated the spring 46 will'be slightly compressed and the escape wheel will be released as before so that as soon as the carriage and the tabulator bar is moved the tabulator stop proper 40 will be forced into position to engage the next tabulator stop on the tabulator bar, the added compression of thespring aiding to effect this movement inore'rezulily.

The function of the stop 40 is to engage the stop members 14. .\Vhen tliexstop lever 39 is raised into position through the action of lever 43 and spring 46. the inclined stop -ll is the first element to engage one. of the stops 14. The engagement with stop 14 on the inclined stop 41 presses lever 39 down ward until stop 14 reaches the slot between the stops l0 and 41. where it drops into position and prevents the carriage from either prevent the heavy impact or'sudden stopletter spaces back of the point where it Wasintended to stop. namely. the point wherein the stop 14 would be in direct engagement with the stop 40 on the lever 39.

' \Vhat I claim is:

1. In a tabulator for typewriters, a lever" pivoted on one side of the typewriter, and

an arm pivoted on the other side thereof having a tabulator stop proper disposed between the pivots of the arm and the said lever and the arm being loosely connected with. the adjacent end of the lever.

' 2. In a typewriter machine. a tabnlator com 'irising a lever pivoted at one side there of, an arm pivoted at the opposite side and extending toward the 'lever, and a yielding 1 connection between the arm and the lever whereby the upward movement of the inner end of the lever tends to move the said arm resilientlyupward. Y i

3. In a typewriter, tabulator mechanisin comprising, alever, a pivoted arm having a tabulator stop proper disposed between the pivots of the arm and said lever, a member pivotedadjacent the pivot of the arm and loosely connected at its free end to the adjacent end of the lever, and a resilient connection between the said member and the arm which carries the tabulator stop proper.

4. In a typewriter, tabulato'r mechanism comprising a lever pivotally mounted at one side thereof, an arm carrying a tabulator stop proper pivotally mounted at the other side with the stop proper disposed between the pivot points of the arm and lever, a member pivotally mounted on the same side as the said arm. a pin and slot connection between the member and one end of the lever, and a spring between thearm and inember \\'he|cl| the arm is raised resiliently when the member israised.

5. In a typewriter. taluilator mechanism comprising' a lever mounted at one side of the machine. an arm mounted at the other side thereof carrying a tabulator stop proper and formed with a lateral projection. a member pivotally mounted at the same side of the machine as the arm adapted to rest on the lateral projection of the arm and ha vin; a depending Pfll'thIll$tl1tllllg below the lateral wje.ctiou-. a loose connection between the free-end of the 'memben and the lever. and a spring disposed between the projection of said member and the lateral projection of said arm tending to press them vieldingly apart therebv holding the mem: ber vieldingly against the lateral projection of the arm.

mounted at the other side of the center of the machine carrying a stop proper disposed substantially at the center of the machine, a

'- member pivotally mounted at the same side .whereby the arm is resiliently raised when of the center as the arm and having a loose connection with one extremity of the lever, and resilient means connecting the arm and the member whereby'the movement of the lever produces a yielding movement of the arm in one direction and a positive movement in the other direction.

7. In a typewriter, tabulator mechanism comprising a lever pivotally mounted at one side of the machine, a pivotally mounted key lever, a link connecting the key lever and the other lever, an arm pivotally mounted on the side of the machine opposite the first named lever with a tabulator stop proper disposed. between the pivot points of the arm and lever, a member pivotally mounted on the same axis of the arm and resting on the arm, a pin and slot connection between the member and the first named lever, the member being provided withca depending portion, and a spring disposed between the depending portion of the member and the a m tending to hold the member on the arm the free end of the member is raised by the operation of the lever.

8. In a typewriter, tabulator mechanism comprising an arm pivotally mounted at one side of the center of the machine with a tabulator stop proper disposed at the center thereof, a member pivotally mounted on the same side of the machine as the arm. and sup- ,ported by the arm, yielding means tending to hold themember on the arm, and means to oscillate the free end-of the member to force the armyieldingly in an upward direction and positivelydn a downward direction.

9. In a typewriter, tabulator mechanism comprising a tabulator bar mounted on the typewriter carriage, adjustable tabulator stops mounted on the bar, margin stops on the bar, an arm ,pivotally mounted at one side of the machine with the tabulator stop proper extending upwardly near the center, an operating lever, and means forming a connection between the arm and the lever for resiliently raising the arm when the ad jacent extremity of the lever is raised and for positively depressing the arm when the adjacent end of the lever is depressed. the tabulator stop proper being adapted to engage one of the adjustable tabulator stops when raised by the lever.

10. In a typewriter, tabulator mechanism comprising a tabulator bar, tabulator stops adjustably mounted on the bar, margin stops on the ends of the tabulator bar, an arm mounted at one side of the center of the machine having ajtabulator stop proper substantially at the center, anotherarm with a stop portion in proximity to the tabulator stop proper, one of said stops in its normal position beingad'apted to engage onefof the margin stops but not the tabulator stops, an operating lever mounted at the other side bf the center of the machine, and means forming a connection between the operating lever and the other one of said arms to move it resiliently in an upward direction to engage the tahulator stops and positively in a downward osition therefrom.

11. n tabulator mechanism, a tabulat'or bar with toothed sides, supports in which the bar is pivoted on a longitudinal axis, a rod mounted in said supports parallel to the bar, and tabulator stops adjustable on the bar with a projection to engage beneath the rod to hold them in position on the bar.

12. In tabulator mechanism, the combination with a tabulating bar rotatable about a longitudinal axis, a rod parallel to said bar, and tabulator stops adjustable on the bar and provided with a lateral proection to engage beneath the rod to hold them in position, the said projection being adapted to clear the rod when the bar is ro tated, whereby they may he placedon or removed from the bar.

l3. In typewriter tabulator mechanism, a tabulator stop consisting of a slotted member with an outside lateral extension from one of the extremities, and a fixed bar below which the said lateral extension engages to hold the tabulator stop in position. i

14. In tabu-lating mechanism a tabulator bar rotatable about its longitudinal axis, a

rod parallel therewith, a 'tabulator stop adjustable on the bar having a slot with a pro ection from one of the extremities which forms the slot to engage beneath the rodv for preventing removal of the stop and having a finger-hold portion above the tabulator bar by means of which the bar is rotated to free the projection from the rod 1' re movingthe stop from the bar.

15. In tabulator mechanism, the combination with a tabulator bar rotatable about a longitudinal axis, of stops adjustable on the bar,'a rod parallel to the bar, projections from the stops adapted to en gage below the rod when the stops are in position on the barand removable from the stop proper at its free end and with an inclined portion in front of the tabulator stop, the extremity of which is spaced from the stop proper, and means to press the arm and the stop proper resiliently into engaging position for the adjustable stops.

17. In tabulating mechanism, the combination with a tabulator bar. of tabulator stops adjustably mounted on the bar. means to lock the stops releasabiy in position on the'bar, a pivotally mounted arm having a stop proper movable to engage the stops on the bar, an inclined projection on the said arm, the highest part of whirh terminates a slight distance in front of the stop proper, and means to press the arm resiliently upward to place the stop proper in engaging osition whereby the tabulator stops on the liar will ride on the projection and engage in the space between it and the stop proper to prevent rebound.

18. In a typewriter, tabulator mechanism comprising a tabulator bar, tabulator stops adjustable on the bar, a margin stop mounted adjustably on the bar, an arm piv otally mounted on the frame of the machine with the stop proper adjacent the free end, a projection on the margin stop to engage the stop proper on the arm, another arm with a tabulator stop proper and a projection at the side of the arm inclined upward from the end toward the stop proper and terminating at a distance therefrom substantially equal to the width of the tabulator stops and out of the path of the margin stop but in the path of the tabnlator stops, and means to pre s the second arm resiliently upward to plamthe stop proper in the path of the tabulator stops whereby the inclined projection will prevent the rebound of the carriage.

If). in ty a-writer tabulator inw'hanism, a pivoted arm having a tabulator stop and an integral retardin; portion in advance of the stop inclined toward the stop but I)2l(('(l therefrom adjarent the stop.

20. In tabulator mechanism, a earria e w th end supports. a tabulator bar pivotal y mountcd at its ends in said supports, a rod mounted in said supports parallel to the bar, and tahulator .-tops adjustable on the tabulator bar with a projection to engage beneath the rod to hold them in position on the bar when it is rotated in a predetermined position.

21. In typewriter tairudator mechanisn'i, a tabular-tor bar, stops adjustable on the bill, a movable springpressed arm having a tabulator stop proper to engage the adjustable stop on the tabulator bar, and with an inclined integral portion on the arm in advance of the stop proper thereon and space slightly therefrom to engage and retard the tabulator stop and bar and to engage the stop on the tabulator bar in the said space when the said arm is raised in position to engage the stop on the tabul'ator bar.

in tabulator mechanism the combination with a tabulator har rotatable about if longitudinal axis, of stops adjustable on the bar, a rod parallel to the bar, projections from the stops adapted to engage below the rod and removable from the bar onlywhen it is rotated upon its axis so that the projections clear the rod, means in connection with the bar to limit its movement about its own axis. and resilient means tending to dra'w the bar into position whereby the stops on th bar will be locked in position.

23. In tabulator mechanism, a carriage with end supports. pivots projecting inwardly therefrom, a tabulator bar with recessed ends freely mounted on said pivot, a spring in the recess at one end of the bar, and a ball interposed between the spring and the pivot to provide an abutment for the end of the spring whereby the rotation of the bar about it v pivot is not resisted by the spring.

in testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 22nd day of January, A. I). 1914.

A LVAH C. ROEBUCK.

\Vitnesses:

N. W. LEATING, J l". Swairrs'rizn'r.

Images