US1943431A - Motor return mechanism for typewriters - Google Patents

Description

Jan. 16, 1934. F. P. GORIN .MOTOR RETURN MECHANISM FOR TYPEWRITERS Filgd Feb. 11.. 1926 3 Sheets-Sheet 1 INVENTOR Jan. 16, 1934.

Filed Feb. 11, 1 26 s Sheets-Sheet 2 l NV ENTOR Jan. 16, 1934. F. P. GORIN MOTORRETURN MECHANISM FOR TYPEWRITERS Filed Feb. 1926 3 Sheets-Sheet 3 INVENTOR Patented Jan. 16, 1934 moron moan mscnsmsm son Y mswm'rsns Frederick P. Gorin, Seattle, Wash, assignor, by mesne assignments, to Elliott-Fisher Company, a corporation of Delaware Application February 11, 19st. sum No. 87,699

14 Claims. (01. 191-66) This invention relates to improvements in typewriting machines and more especially to such devices wherein the typewriter proper is adapted to move both transverselyv and longitudinally I P l-' a flat platen, such\for example as is involved in the well-known Elliott Fisher machine. The principal object of this invention is to provide a' motor and meansfor causing the motor to impart either a transverse'movement of the typewriter proper with respect to its platen or bed, and also simultaneous longitudinal movement; and also to provide selective means whereby either one of these movements may be imparted. I accomplish these and other objects by the peculiar arrangement and combination of the parts as will be more fully hereinafter described and explained in the following specification, shown in the accompanying drawings and finally pointed outin the appended claims.

In' the drawings:

Fig. 1 is a plan view of the well-known Elliott Fisher typewriter bookkeeping machine with my device applied thereto.

Fig. 2 is a rear elevation thereof.

Fig. 3 is a side elevation with portions broken away.

Fig. 4 is an enlarged detailed view of the tripping and switch mechanism.

Fig. 5 is a similar view of the clutch mechanism.

so Referring now more particularly .to the drawings, reference numeral 1 indicates the usual legs of the typewriter stand tied together by the rods 2 and to which is secured the end bar 3, side bars 4 on which are toothed tracks 5 over as which run the toothed traction wheels or rollers 6 mounted upon the cross rod 7 which is revoluble within journal bearings 8, which extend upwardly from the side plates 9, and whose opposite ends are tied together by cross plate 10, thus forming what is generalhr known as the sliding or rolling frame, which will be so referred to hereinafter. Upon the.rol1ing. frame" is mounted the typewriter proper 11, commonly called the "head and which will be so referred to. 12 indicates the usual spring drum from which extends the usual tape 13 having its opposite end connected to the ead whereby the head'is at all times urged in letterfeed direction controlled by its usual feeding mechanism, which includes a so feed rack 14 and pinion 1s. is is theusual hand tripping lever for releasing the feeding mechanism. l'listheusualflatwritingbedorplaten which has a slight vertical movement so as to allow the written sheets to be removed from the 5 grip between the bed and the strips 18. 21 are theusualpedalswhimthroughthe rod 22, causes the slight vertical movement of thebed. 23istheusualbankingstopwhichar rests the head when it is returned in contra-- letterfeed direction to its initial writing point. no 24 is the usual cross bar which is adapted to receive the usual adding boxes. 25 is one of the usual ribbon spools. 26 indicates the cross tracks upon which bear the usual rollers 2'1 mounted upon the head so that the head may have a free as lateral movement with respect to the rolling frame.

The foregoing description is considered suiiicient to fully identify the usualand well-known Elliott Fisher machine, in which no changes are necessary whatever in order to apply my. device to it except as will be now fully described and explained. 28 indicates an electrical motor secured to the typewriter stand at 29. 30 indicates the wires from the outside source of electrical energy such as the usual municipal power plant. 30' indicates conducting wires from the motor to points 31 where they are secured to the side bars 4, being insulated therefrom. 32 is a plate hi'ngedto the side bars 4 at 33', and which is maintained in its position as seen in, Fig. 4, by contactwith the extension 34 of the usual hand-tripping lever 16 and the extension of a, similar lever 35 which is pivotally mounted upoh" an extension 36 from one of the bars 4. The'85 usual hand tripping lever is'operated to cause the head to move towards the operator upon its rolling frame in the usual line spacing operation, and of course when this operation occurs the headcannot' move upon its rolling frame away from the operator. vThe lever 35 however being mounted upon the fixed frame work or stand of the typewriter, instead of upon the head, can be operated independently of the usual hand tripping lever 16 and vice versa. The operation of either of the levers will cause the plate 32 to move about its pivot 33 until it contacts with the, two wires at 31 and thus closes the electrical circuit. 37 is a spool which is normally free to revolve upon the shaft of the motor 28, when the circuit is open. 1 When the circuit is closed, however, and the motor shaft caused to revolve, a collar 38 which is secured to the shaft will revolve with it and cause the free ends of arms 39 pivoted to a collar at 40 to move into their dotted positions as seen in' Fig. 5 which shows a contact bf the arms with the side walls 41, of slots 42 in the spool. A spring 43 normally holds the arms out of contact with the-malls off-the slots: 44 is a f flexible connection such as a leather belt, prefer- 11C ably circular in cross section, having one of its ends secured to the spool and its opposite end secured to one end of a spring 45, whose opposite end is secured to the head 11. The belt passes through a smooth tube 46, secured to a bracket 47 which is rigidly mounted upon the casting 8.

point, and a short distance before it reaches it,

the head contacts witha plunger 50 which is slidable within a dash pct 51, secured, by means of a bracket 52, to the rolling frame, so that the impmt incident to the arrest of the head is fully cushioned; but notwithstanding the vibration of the head caused by such cushioning, the head will be at all times finally arrested exactly at the initial writing point, because, while the feed rack and its pinion were separated during this cushioningr action, due to the mutilated portion 49 of the rack, still the pinion and the rack teeth were at all times in the same horizontal plane and upon the feed pinion contacting with the first tooth. to the right of the mutilated portion (see Fig. 1) the pinion of course will immediately engage that tooth which positively and finally arrests the head against further movement in letterfeed direction, until of course the type key or space bar be operated. Therefore, when the usual hand tripping lever 16 be operated, the electrical circuit will be closed and the head through the clutch mechanism, belt 44 and spring 45, will'be caused to move in contra-letterfeed direction until it is gradually arrested by the plunger 50 and then returned in the opposite direction by the usual carriage motor mechanism and finally arrested at the exact initial writing point. The operator, of course, holds the hand tripping lever depressed during this movement and until the head comes to final rest. 53 indicates a dash pot mechanism of similar construction to the mechanism already described.

The plunger of the mechanism 53 is secured to the rolling frame and is adapted to contact with a block 54 secured to the member 3 which of course is a part of the fixed typewriter stand.

- If the writing upon any given sheet be completed,

requiring no further line spacing it is of course necessary to cause the head to move rearwardly so as to allow the removal of the written sheet. Therefore, the usual hand tripping lever 16 is not operated, because it would not only close the electrical circuit but would hold the head from longitudinal movement towards the bar 3, and on longltudinalLv will take a diagonal path until it bed or platen, and allow the removal of the written sheet. When the rolling frame moved longitudinally as just described, it was arrested by the dash pot mechanism 53 contacting with the block 54 so that the arrest was fully cushioned in the same manner as was the arrest of the head.

I claim:

1. A typewriting machine having a writing bed and a head adapted, for movement transverse the bed and also in a direction opposite to normal line spacing, and a means to apply power for imparting both such movementssimultaneously.

2. A typewriting machine having a writing bed and a head adapted for movement transverse the bed and also in a direction opposite to normal line spacing, and a means for imparting both such movements, and mechanism for independently controlling said means to cause it to impart such movements simultaneously or separately at will. a

3. A typewriting machine having a writing bed and a head adapted for transverse movement and for longitudinal movement opposite to normal line spacing movement, a motor connected to operate the head for both such movements and selective controls for the motor, in the use of one of which the head will be subjected to both such movements simultaneously and in the use of another of such controls the head will be subjected to but one of such movements.

4-. A typewriting machine having a writing bed and a head adapted for movement transverse the bed and for movement longitudinally thereof in opposition to the normal line spacing movement, 8. motor connected with the head for operating said head in such movements, means carried by the head for limiting the motor operated movement of the head to the transverse movement, and means carried by the machine for causing the motor operated movement of the head to be both transverse and longitudinal.

5. A typewriting machine having a flat writing bed and a head adapted for transverse movement of the bed and -for longitudinal movement in opposition to the normal line spacing movement, power means connected to the head and capable of imparting both such movements to the head, and selective means for preventing longitudinal movement of the head under thepower of the motor.

6. A typewriting machine having a flat writing bed and a head adapte for transverse movement of the bed and for longitudinal movement in opposition to the normal line spacing movement, power means connected to the head and capable of imparting both such movements to the head. and selective means for preventing longitudinal movement of the head under the power of the motor, while permitting the motor operated transverse movement of the head.

7. A typewriting machine, motor means for operating the carriage thereof in a letter-feed direction, means for operating the carriage against said motor means, and means for insuring the final arrest of the carriage at its initial writing point, said means including a disconnection of the typewriter feed mechanism without independent operation of any of the parts of' such mechanism. 1

8. A typewriting machine having a motor mechanism for moving the carriage in a letterfeed direction, means for operating the carriage against the motor means, a banking stop to limit movement of the carriage under such means and means to disconnect the feed rack and opening of the carriage as the carriage approaches the banking stop without independent movement of the feed rack.

9. In a typewriting machine having. a writing bed and a head adapted for movement transverse the bed for longitudinal movement for line spacing and for longitudinal movement in opposition to line spacing, of a motor for imparting said transverse movement and said longitudinal movement in opposition to line spacing, a manuallyfixed frame in opposition to the line spacing movement of said rolling frame, a manually operable member carried by the rolling frame and adapted to impart a movement to said frame in line spacing direction and simultaneously induce a motor operation of the head transversely of the rolling frame; and a member carried by the fixed frame of the machine to cause the motor to simultaneously move the head transversely of the rolling frame and to move the rolling frame and head longitudinally of the fixed frame in opposition to the line spacing movement of the rolling frame.

11. A typewriting machine including a fixedframe, a rolling frame longitudinally movable thereon, a typewriter head transversely movable on the rolling frame and a motor operable to move the head on the rolling frame and to move the head and working frame longitudinally on the fixed frame in opposition to the line spacing 3- movement of said rolling frame, a manually" operable member carried by the re frame and adapted to impart movement to said frame in line spacing direction and simultaneously induce a motor operation of the head transversely of the rolling frame, and amember carried by the fixed frame of the machine to causethe motor to 1 simultaneously move the head transversely of the rollingframe' and to move the rolling frame and head longitudinally of the fixed frame in opposition to the line spacing movement of the rolling frame, said firstmention'ed manually operable member rocking the rolling frame against-longitudinal movement in opposition to the line spacing movement. a v

12. The combination with a typewriting; machine, including a movable carriage and motor mechanism therefor, carriage feeding mechanism and a banking stop, of means. which insures the final arrest of the carriage at its initial writing point, said means including means for discon-- necting the carriage feed mec without taking any'vpart of said mechanism out of its' normal horizontal plane. A.

' 1 3. The combination with a .typewriting-machine, of a motor for moving the carriage in contra-letterfeed direction, a flexible connection between the motor. and the carriage and an elastic banking stop and means for insuring the final arrest of the carriage at its initial writing point after the carriage has been temporarily arrested by its elastic banking stop, said means permitting its free. and uninterrupted-return movement to the initial writing point after such temporary arrest by the elastic stop.

14. In a machine of the class described, a platen, a. carriage movable both longitudinally and transversely thereof, and means for moving the carriage in both directions, including-a single connecting member extending between the motor v and carriage.

, FREDERICK Pi GORIN.

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