US1243451A - Type-writing machine. - Google Patents

Description

G/A. SEIB.

TYPE WRITING MACHINE.

APPLICATION man oc. 4. |916.

Patented 0st. 16, 1917.

2 SHEETS-SHEET l.

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WITNEEEEE inn/ENTER Hifi AUDRNEY G. A. SEIB.

TYPE WRITING MACHINE.

APPLICATION FILED oc. 4. |916.

Patented Oct. 16, 1917.

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GEORGE A. SE'IB, 0F ILION, NEW YORK, ASSIGNOR TO REMINGTON TYPEWBITEE.

' COMME?, 0F ELION, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

v Speccaton of Letters Patent.

Patented Oct. 316, ilil.

Application filed October 4, 1916. Serial No. 123,656.

To all whom it may concern.'

Be it known that l, GEORGE A. Seite, citizen of the United States, and resident of llion, in the county of Herkimer and State of New York, have invented certain new and useful improvements in Type-Vifriting Machines, of which the following is a speciiication.

My present invention relates to carriage feeding devices for typewriting machines and its general object is to provide new and improved devices of the character specified. More speciiically my invention relates to novel escapement mechanism employing a reed or tongue dog or dogs in place of the usual escapement embodying a pivoted or slidably mounted dog which requires accu rate fitting to insure an evenly timed let-d'.

To the above and other ends my present invention resides in the features of construction, combinations of devices and arrangements of parts hereinafter described and particularly pointed out in the claims.

ln the accompanying drawings which illustrateione form of my invention applied to a No. 11 Remington front-strike typewriting machine,

Figure 1 is a fragmentary front to rear vertical sectional view of said machine.

Figs. 2 and 3 are respectively a side elevation and a rear elevation partly in section of the escapement devices.

F ig. i is a horizontal sectional view taken on a plane indicated by the dotted line m :c in Fig. 3, said figure being drawn to an enlarged scale.

Fig. 5 is a horizontal sectional view taken on a plane indicated by the dotted line y in Fig. 3.

Figs. 6 and 7 are respectively a fragmentary side elevation and rear elevation, drawn to an enlarged scale and vshowing the escapement devices in operated positions.

F ig. 8 is a fragmentary view of a modification.

As appears from Fig. 1, the main frame of the Remington front-strike typewriting machine comprises a base 1, uprights 2 and a top plate 3, above which are fixed grooved guide rails si and 5 that cooperate through anti-friction balls 6 with the grooved front and rear bars 7. and 8 of a carriage truck that also comprises end bars 9, said truck being part of a traveling carriage in which is mounted a 'rotary platen l0. Cooperative with the front face of the platen are type bars 1l mounted on hangers l2 secured to the stationary support or segment 13, the type bars being each actuated by a train of devices comprising a link 14, lever l5, and a second link 16, which latter is connected to a key lever 17, the key levers being fulcrumed on a bar 18 fixed to the rear of the base and each being provided with a restoring spring 19 and a key cap or button 20. Outside the set of key levers are a pair of parallel spacing levers 21 which are also fulcrumed on the bar 18 at the rear and `are connected at their front ends by a space bar 22. Each lever 21 is provided with an enlargement 23 formed with a guide slot 24 for the reception of a universal bar 25 that underlies the key levers and is adapted to be actuated by each one of them. r`he universal bar is supported by links or arms 26 pivoted at their upper ends at 27 to arms 28 extending rearward from a rock shaft 29 pivoted in the sides of the base. liiXed centrally to the rock shaft and extending rearward therefrom is an arm 3G formed with a hook end, the slot 30EL wherein receives a pin 31 fixed to the lower end of a diagonally arranged link 32, the upper end whereof is pivotally connected to the forwardly extending arm 33 of a rocker that further comprises an upwardly extending arm 34 and a hub 35 (Fig. 3) in which is fitted a shaft or spindle 36 having coned ends that coperate with bearing pins 37 secured in lugs 38 projecting rearward from a bracket 39 that is Xed to and depends from the top plate. screw 40 extending upward through the hub 35 secures it and the shaft 36 in fixed relationship and also provides a connection for a coiled restoring spring 41 that has its rear end hooked around the grooved head of the screw, the forward end of said spring being anchored to an arm 42 fixed to the bracket 39. The rocker arm 33 has also pivoted to it behind the link 32 a second link 43, the lower end of which is slidably supported in a cross rod 44 fixed at its ends to the enlargements 23. A nut 45 threaded on the lowerl end of the link 43 below the rod 44 provides an abutment against which said rod'acts when the space bar 22 is depressed, the result being that the link 43 is caused to operate the rocker comprising the arm 33. During such operation it will be understood that the pin :if y

3l slides downward in the slot 3()a with the result that the roch shaft 2.9 and universal bar '25 are not aeoted. it will further be apparent that when one or the printing lreys 2O is actuated; causing the connected type bar ll to print and also depressing the universal bar 25, motion will be transmitted through the rock shaft 29, arno 30 and link 32 to the rocher arm 33, actuating the rocher and depressing the link 43 which, however, will slide through the rod 44 without adecting the space levers and bar. Most oit the parts thus far described are, or may be, like the corresponding parts in the No. il Reinington machine except for the rocher 33-36. rl`his rocher, instead or" being a dog carrier,

as in the regular construction, operates as' a dog actuator, the dogs proper being of a lnovel construction and mounted on a stationary part oll the machine. Said dogs, presently to be described, cooperate in the present showing with a double wheel et ordinary construction, said wheel comprising a rear wheel 46 provided with teeth 47 and a front wheel 48 provided with teeth 49, the said front and rear wheels being adjustably secured together by devices coinprising screws 50 so as to give a drop ci any desired extent from the teeth of the iront wheel to the teeth of the rear wheel. rlhe double escapeinent wheel, comprising the single wheels 46 and 48, is mounted on a horizontal shaft 51 which bears in a brac-het 52 tiXed to the top plate. Said shaft has Xed to its forward end afeed pinion 53 with which normally meshes a spring pressed feed rack 54 carried by arms 55 pivoted at 56 to lugs on therear bar 8 ot the traveling carriage. The usual spring drum (not shown) tends constantly to draw the traveling carriage leftward across the inachine.`

Referring to the novel dog devices, inthe present instance a piece 5'? ot spring teinper'ed sheet metal is divided by a slot 58 (Fig. 5) into two flexible or resilient tongues, reeds or dogs 59 and 60 which are adapted for cooperation respectively with the" teeth 49 and 47 of the double escapeinent wheel. rihe dog plate or member 5i' is formed with an elongated slot or hole 6l which receives a screw 62 by which it is adjustably secured to a support or block 63 Said block is bored out, as indicated at 64, and slotted, so that in effect it is U-shaped, having when viewed from the rear as in -Fig. 3, a right-hand upstanding arno or branch 65 and a lett-hand branch 66. rlhe branch 65 receives on its top tace the dog piece 5T which is secured in place by the screw 62 and thence entends horizontally inward toward the teeth ot the escapeinent wheel. in other words, the dogs including their working portions are arranged substantially tangentially to the teeth et the wheel which rotates in a vertical plane. The branch 66 is fitted to the under side-oil the top plate 3 and is secured thereto by headed screws 67v which pass downward through the top plate and are threaded into holes in the enlarged upper end of the arm or branch 66. rlhe reason for giving the block or support 63 the shape shown and which is conveniently described as split or U-shaped, is that it adords a slight resilient or spring action under the impact of the blow ,of the escapement wheel teeth against the ends of the springdogs, as hereinbefore described, and this tends to reduce somewhat the noise. The dogs 59 and 60 are controlled by actuators or linhs which provide a connection between said dogs and the rocker 355-436. '.Thcre are two of these actuators or operating connections 68 and 69 vertically arranged one behind the other. These actuators are sirnliar in construction, each being formed ot a dat piece of metal provided at its upper end with a head, twisted at right angles to the body, that of the forward actuator being numbered TO and that of the rear 7l. ri`he heads 70 and 7l pass through slots 72 and 73 formed in enlarged portions of the respective dogs 59 and 60 about inidway of their lengths, and then said heads are given a quarter turn so that they are at right angles to the slots, as best shown in Fig. 5, the construction providing against accidental disconnection. rlhe lower ends or the respective actuators are formed with somewhat larger heads "Z4 and 7 5 which pass through slots 7 6 formed in the attach ing piece or plate 77 that is mounted on top of the dog 'rocker and has an inverted li'- portion 78 curving around or embracing the arm 34 and being secured' in place by a headed screw 79 threaded into said arm. ylfhe arm 34 receives near its upper end a 'forwardly extending adjustable screw 80 which cooperates with an abutment 8l on the bracket 39 to limit forward swings of the rocker. The piece 'i7 is additionally'secured lby the screw 40 which projects upward through both the hub 35 and the horizontal portion of the piece 77 and receives two locking nuts 82 by which said piece is clamped to the rocher. The tongue 59 is in the plane of the wheel 48 and the tongue 60 is in the plane ont the wheel 46, and the arrangement o the tongues is such that moving up and down in these planes and at right angles to the movement of the rocker they cooperate with the teeth of these respective wheels under the axis of the shaft 5l. lhe horizontal plane that contains the two tongues cuts into the lowermost teeth of the wheels near their tips. The spring tension of the tongues is such that they tend to spring back to the horizontal plane after having been iieaed to permit the teeth or" the escepeinent wheels to escape or inove past.

intenti The Hering or bending of the tongues is,con trolled by the'actuators 68 and 69. It will be understood from Figs. 2 and 5 that the forward actuator 68 is in front of the vertical plane, passingthrough the axis of the rocker spindle 36, while the rear actuator 69 is behind said plane. Consequently it will be understood that when the rocker is rocked forward by the actuation of one of the printing keys or the space key, the actuator 68 will swing or move downward while the actuator 69 will move correspondingly upward, the reverse movements taking place on the return of the dog rocker after the printing operation. Normally the tongue 5,9 isengaged with the lowermost tooth 49 of the front set of teeth, as shown clearly in Figs. 3 and 5. At this time the tongue 60 is Hexed downward so that it is out of the path of the teeth 47 of the rear set of teeth. When the rocker is rocked forward the lactuator 68 is lowered and will draw down or flex the tongue 59 so that it will slidedown oill the tip of the tooth 49, permitting the double. escapement wheel to rotate and kadvance the carriage toward the left under the pull of the spring drum. At the same time that the actuator 68 moves downward the actuator 69 moves upward and'thus permits the flexed tongue 60 to rise through. its inherent spring tension until it is in the path of a tooth 47 the result being that the proximate tooth 47 just back of the released tooth 49 will cooperate with the end of the tongue 60 to arrest the escapement wheel and the carriage. ln other words, the -forward swin 0f the dog'rocker or reciprocating mem er under the actuation of the printing key permits the usual drop to take place, this drop being measured by the distance between any two associate teeth 49 and 47 of the double escapement wheel. The position of the parts at this time is illustrated in Figs. 6 and 7 which show the dog rocker swung forward and the rear tongue 60 horizontal and in engagement with the wheel tooth 47, the tongue 59 being flexed downward out of the,` path of the wheel tooth 49. On the release of the printing key and the return of the dog rocker to normal position, the actuator 69, swinging downwardly, will bend the tongue 60 downward, causing it to release the engaged tooth 47 and permitting the double escapement wheel to turn. .At the same time the actuator 68 will move upward, permitting the flexed tongue 59 to return to the horizontal plane in position to arrest the escapement wheels and the carriage by reason of the engagement of the end of the tongue 59 with the tooth 49 next behind that with which the tongue had cooperated prior to the beginning of the escapement operation. The above described operation is repeated at each actuation of the printing key, resulting in the bending or exure of the two spring tongues in alternation, and consequent movement of their ends radially of the escapement wheel to permita letter space movement of the carriage.

It may be remarked that the engaged tongue or leg 59 of the dog or pawl member 57 acts as a ratchet during return movements of the carriage and escapement wheel or rack, being swung downward or flexed, by the backs of successive wheel teeth 49.

As stated, the principal idea of the present invention was to do away with the usual movable dog which, whether it swings on a pivot or slides, requires accurate fitting to secure an evenly timed let off, such fitting being both diiiicult to attain and also expensive. The substituted reed or tongue dog or pawl, as described, embodies two tonguesv which coperate at their points or free ends with the teeth of the double wheel, the

tongues being even at the contact point and the drop being obtained from the two sets of teeth on the wheel or in tother words by setting the two toothed parts of the double wheel so that the teeth of one set are more or less behind those of the other. Obviously, however, another style of toothed member or rack such for example as a single wheel or, otherwise expressed, a single set of teeth, may be used, such as is illustrated in Fig. 8 and marked 83. This wheel coperates with two spring tongues or dogs 84 and 85 of different lengths, the normally disengaged tongue 85 being shorter than the other so that when the tongue 84 is iiexed downward and the tongue 85 returns tothe horizontal, the consequent drop will carry the engaged wheel tooth past the end of the dog 84; consequently said dog will coperate with the next succeeding wheel tooth when the dog rocker returns to normal position. Other constructional modications will readily suggest themselves.

Various changes may be made without departing from my invention.

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

l. In carriage feeding devices for typewriting machines, the combination of a key controlled reciprocating member, a toothed rack, and a iexible tongue coperating with said rack, said tongue being supported independently of but being controlled by said reciprocating member.

2. In carriage feeding devices for typewriting machines the combination of a key .controlled rocker, an escapement wheel, a

a pair of flexible tongues coperating with said Wheel, said tongues being controlled by said rocker.

4. ln carriage feeding devices for typeivriting machines, the combination of a key controlled reciprocating member, a rack, and a flexible dog mounted on a stationary part and cooperating ivith said rack, said dog being controlled by said member.

5. In carriage feeding devices for typewriting machines, the combination of a key controlled reciprocating member, a rack, and a pair of flexible dogs mounted on a stationary part and operative by said member to alternately coperate with said rack.

6. In carriage feeding devices fortypewriting machines, the combination of a key controlled rocker, an escapement Wheel, and a flexible dog mounted on a stationary part and cooperating with said Wheel, said dog being controlled by said rocker.

7. In carriage feeding devices for typeivriting machines, the combination of a key controlled rocker, an escapement Wheel, and a pair of flexible dogs mounted on a stationary part and coperating with said Wheel, said dogs being controlled by said rocker.

8. ln carriage feeding devices for typewriting machines, the combination of a key controlled rocker, an escapcment Wheel, and a yielding dog mounted independently of said rocker and cooperative With said escapement Wheel, said dog being controlled by said rocker.

9. ln carriage feeding devices for type- Writing machines, the combination of a key controlled rocker, an escapement wheel, and a pair of yielding dogs both mounted independently of said rocker but controlled by said rocker to coperate alternately with said escapement wheel.

l0. ln carriage feeding devices for typevvriting machines, the combination of a toothed rack, a key controlled reciprocating member movable transversely of said rack, and a dog mounted independently ofv said member but controlled thereby and coperating vvith said rack, said dog having movement in the plane of said rack.

ll. ln carriage feeding devices for typeivriting machines, the combination of a toothed rack, a key controlled rocker movable transversely of said rack, and a dog mounted independently of said rocker but controlled thereby, said dog having a movement in and out of said rack in the plane of said rack.

l2. ln carriage feeding devices for typeivriting machines, the combination of an escapement Wheel, a key controlled rocker movablel transversely of said Wheel, and a dog normally engaged with said Wheel and movable by said rocker radially of said Wheel to release the same.

recenti 13. ln carriage feeding devices for typewriting machines, the combination of an escapement Wheel, a key controlled rocker movable transversely of said Wheel, and a dog or pavvlliaving its point normally engaged With a tooth of said Wheel and movable by said rocker so that said point rides outward radially of said tooth and past its end to release the Wheel.

il. ln carriage feeding devices for typevvriting machines, the combination of a key controlled reciprocating member, a rack, and a flexible tongue coperating with said rack, said tongue being flexed by said reciprocating member during movements of the carriage in printing direction and being flexed also by the teeth of said rack during movements of the carriage in return direction.

l5. ln carriage feeding devices for typevvriting machines, the combination of a key controlled rocker, an escapement wheel, and a flexible tongue coperating With said ivheel, said tongue being flexed by operating said rocker during movements of the carriage in printing direction and being flexed by the teeth of said Wheel during return movements ,of the carriage.

16. In carriage feeding devices for typevvriting machines, the combination of a circular rack, a key controlled member reciprocating in a plane at rightangles to said rack. and two dogs controlled by said member and yieldable at right angles to the movement thereof, the Working portions of said dogs being normally arranged substantially tangentially of said circular rack.

l?. ln carriage feeding devices for typeivriting machines, the combinationof a rack, a reciprocating member movable transversely of said rack, and tivo dogs alternately movable in the plane of said rack and into and out of engagement therewith, said dogs being controlled by said reciprocating member.

18. ln carriage feeding devices for typevvriting machines, the combination of an escapement vvheel provided vvith tivo sets of teeth, and a pair of key controlled reed dogs, one cooperative with each of said sets of teeth.

i9. ln carriage feeding devices for typeivriting machines, the combination of an escapement Wheel provided with tivo sets of' teeth, a pair of reed dogs, one coperative -with each of said sets of teeth, and key controlled means for alternately flexing said dogs. l

Q0. ln carriage feeding devices -for typewriting machines, the combination of a toothed rack, a flexible dog against the end of which said teeth are adapted to successively abut, and key controlled means for flexing said dog.

2l. ln carriage feeding devices for typetvriting machines, the combination of a a Bti toothed member, a pair of eXible dogs against the ends of which. said teeth are adapted to abut, and means for alternately exing said dogs to permit of the escapement of said teeth successively.

22. In carriage feeding devices for typewriting machines, the combination of a toothed rack, a resilient support, a flexible dog on said support, and key controlled means for flexing said dog.

23. In carriage feeding devices for typewriting machines, the combination of a toothed rack, a resilient support, a eXible dog on vsaid support, and key. controlled means for flexing said dog, the teeth abutting successively against the end of said dog.

24. In carriage feeding devices'for type- Writing machines, the combination of a toothed rack, a resilient U-shaped support, a dog secured to one of the branches of said support, the other branch of said support being fixed to a stationary part of the machine, and key actuated means for controlling said dog.

25, In carriage feeding devices for typewriting machines, the combination of a toothed rack, a rocker below said rack, a pair of dogs mounted independently of said rocker and coperative with the teeth of said rack above said rocker, and two connections, one for each dog to said rocker, said connections being at opposite sides of a vertical plane passing through the axis of said rocker.

QG. In carriage feeding devices for typewriting machines, the combination of a toothed rack, a pair of horizontally arranged flexible dogs against thev ends of which the teeth of said rack are adapted to abut, a key controlled rocker arranged below said dogs, and links connecting said dogs with said rocker, said links being on `opposite sides of a vertical plane passing through the axis of said rocker.

27. In carriage feeding devices for typewriting machines, the combination of an escapement Wheel provided with two sets of teeth, two flexible spring tongued dogs screwed to a stationary part and coperative in alternation with the sets of teeth, one do with each set, a key controlled rocker, an two arms or links connecting said rocker with said dogs, the links being so arranged that they move in opposite directions when the rocker is actuated.

28. In carriage feeding devices for type- -writing machines, the combination of a key controlled rocker, an escapement rack, a pair of flexible tongues coperating with the teeth of saidy rack, and a pair of links connecting said rocker with said tongues and arranged so that they move in opposite directions when the rocker is actuated.

29. In a typewriting machine and escapement mechanism comprising in combination a toothed wheel, a pair of dogs arranged substantially tangential to the teeth of said wheel alternately to abut said teeth, and means for actuating said dogs.

30. In a typewriting machine and escapement mechanism comprising in combination a toothed wheel, a pair of flexible dogs constructed and arranged so that their free ends alternately abut the teeth of said wheel, and means for actuating said dogs.

31. In a typewriting machine, the combination with an escapement wheel, of a resilient plate divided to provide two substantially parallel spring dogs for coperation with the teeth of said wheel in substantially the manner specified.

32. In carriage feeding devices for typewriting machines, the combination of an escapement wheel, a horizontally arranged dog, the working portion whereof is normally disposed substantially tangentially of said wheel, and key controlled means for moving the working portion of said dog radially of said wheel.

33. In carriage feeding devices for typewriting machines, the combination of an escapement wheel having two sets of teeth, a pair of horizontally arranged dogs extending under said wheel and having their working portions normally disposed substantially tangentially of said wheel, and key controlled means for moving the working portions of said dogs substantially radially of said wheel.

Signed at Ilion, in the county of Herkimer, and State of New York this 2nd day of October A.. D. 1916.

' GEORGE A. SEIB.

Witnesses:

MARY C. GLnAsoN, CLARENCE M. SLAwsoN.

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