US967894A - Type-writing machine. - Google Patents

Description

J. FELBEL.

TYPE WRITING MACHINE.

A PLIGATIONMLBD NOV.16, 1904.

INVE NTUR- 3 SHEETS-SHEET 1.

Patented Aug. 23, 1910.

WITNESSES- Patented Aug. 23, 1910.

3 SHEETS-SHEET 2.

\NVENTUR:

NOE

J. FELBEL.

TYPE WRITING MAGHTNE.

APPLICATION FILED NOV.16, 1904.

967,894. Patented Aqg. 23, 1910.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

JACOB FELBEL, OF NEW YORK, N. Y., ASSIGNOR T0 UNION rvrnwnit'rnn COMPANY,

OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW) JERSEY.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

I Patented Aug. 23', 1910;

To all whom it may concern:

Be it known that I, Jacon FELBEL, citizen of the United States, and resident of the borough of Manhattan, city of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Type-VVriting Machines, of which the following is a specification.

My invention relates to typewriting machines and it has for its principal object to provide an improved escapenient mechanism for such machines.

My invention consists in certain features of construction and combinations and arrangements of parts, all as will be set forth herein and particularly pointed out in the claims.

In the accompanying drawings, Figure l is a frout'to rear vertical section of a typewriting machine in which my invention is embodied; Fig. 2 is a rear elevation of the escapcincnt mechanism; Fig. 3 is a perspec tive view of the dog rocker, with the rear dog removed; Fig. at is a perspective view of said rear dog; Figs. 5, (3, 7, 8 and 9 are diagrammatic top views of the escapement mechanism showing the parts in the positions they occupy at different periods in the stroke of a key; Flgs. 10, 11, 12 and 13 are rear views partly in section showing the parts in the positions corresponding to Figs. (3-5) respectively; Figs. let and 15 are a rear elevation anda side elevation, respectively, of another form of my oscapement mechanism; Fig. 10 is a perspective view of a dog forming part of the mechanism shown in l igs. l-land 15; Figs. 17 and 18 are a. rear elevation and a side elevation, respectively, of a third form oi my oscapcmcut mechanism: and Figs. 15) and 20 are a side View, partly in section, and a. back view, rospcclively. of a form of my invent ion in which a straightt'cod rack is en'iployed.

My invention is applicable to typowriting machines generally, but it here shown as applied to the Monarch :lront strike typewriter. The main frame of this machine comprises a base portion 1 from \vhich'rise posts 2. which support a. lop plate 3. Front strike type bars -l' are pivotally mounted on a segment and are connected by links (3 with subdevers 7 which are pivoted to key lovers 8 having keys 9 mounted thereon.

Each of the sub-levers extends below its key lever and is formed with a slot which embraces a stationary rod 10. The construction is such that when any key is depressed the type is thrown upward and backward against the front face of the platen 11. Said platen is mounted in the carriage 12 which is slidably mounted on bars or rails 13 which are supported byposts 14 which rise from the top plate 3. The carriage is drawn across the machine, rails 13, by the usual spring drum 13*, or said carriage may be so drawn across the machine by any known or suitable power device.

The carriage is provided with the usual rack bar 15 with which meshes a pinion 16 which is rigidly mounted on the forward end of a shaft 17 (Fig. 2), which is journaled in a housing 18, which is mounted on the top plate of themachine. At its rear end the shaft 17 has a box or cap 19 rigidly secured thereon by means of set screws 20 which are threaded through the hub 21 of said cap 19, and engage the shaft 17. A toothed escapement wheel 22 is mounted on the shaft 17 by the side of the cap 19. So far as my invention is concerned, the escapement wheel may be rigidly mounted on the shaft, orsaid escapement wheel may be loosely mounted on the shaft as usual in typewriting-machines and may have rigidly connected thereto the usual ratchet wheel engaged by a pawl or pawls pivoted within the cap 19. The latter construction is e1n-.

ployed for the purpose of leaving the shaft 17 free to turn backward when the carriage is moved to the right without turning the cscapement wheel. The dogs are mounted on a dog rocker or carrier which may consist of any to and fro moving part controlled by the keys. In the present instance the dog rocker consists of the usual rock shaft -23 having an upwardly extending arm 24 on which the dogs are mounted and a forwardly extending arm 25 having laterally cxtending branches or arms 26 from which depend links 27 which connect said arms with the universal bar 28 which lies beneath the key levers 8. The rock shaft 23 is pivotally mounted in lugs or carswhich project from a bracket 29 which depends from the top plate 3. The dog rocker 1s restored to normal position by the usual sliding on the coiled spring 30, ,which-is-connected at one end to the shaft" 23 and at "the other end 1 arm by a'pin 33 du a 1 position shown in of the arm 24 which constitutes a stop for its pivot into position to be moved into enfree end of which engages the dog.

stepping dog is or may be similar in cons'a'id dog. When the'dog rocker is rocked forward, the stepping dog is freed from the escapement rack and is thrown back about ga'gement with the next succeeding tooth of the' rack. This motion of the stepping dog is effected by a flat spring 34 which is. secured tothe arm 24 by a screw 35 and the This struction and operation to that ordinarily used in the Remington machines The rear dog is made part of a device 36 which preferably hasthe generalform shown in Fig. 4. Said device has a hub 37 which is journaled on a headed and shouldered screw 38 (Fig. 2) which is threaded into a hole 39 (Fig. 3 in the rear face of the arm 24. The rear dog is thus pivoted to rock about an axis which is substantially parallel tothe direction of motion of the dog rocker, and also to the axis of the esca ement wheel. The construction *is such t at the dog vmoves back and forth with the dog carrier toward and from the escapelnent wheel and is also free to move with the escapement wheel by oscillating on the screw 38 as apivot. The

rear dog is moved in a direction contrary to that. in which it is moved by the escapement wheel by means of a spring 40 which is coiled about the hub 37, and which at one end engages the pivoted device 36 and at the other end presses against a pin 41 projecting from the arm 24. The motion of the rear dog under the impulse of the spring 40 is adjustably limited by a set screw 42 which is'threaded through a bracket 43 which projects rearwardly from the arm 24. The

screw 42 issecured in adjusted position by a lock nut 44.

'The device 36 has a forwardly extending portion 45, 46 which constitutes the holding dog, the part 45 of which is engaged by the screw 42, the part 4-6 of the dog'being adapted to cooperate with the teeth of the escapement rack or wheel. The part 46 projects towardfthefront of the machine above the arm 24. and, ;when tl1c rocker is rocked for wa'rd,"is engaged by a tooth of the escapement rack, as shown in Fig. 6. Then the rear dog 46 moves into the path of a tooth of the cscapement rack and the stepping 'to Figs. 5-13.

.controls the motion of vthe dog.

dog moves out of engagement with said tooth, the rear dog is momentarily held against motion with the escapement rack and said rack and the carriage are thus momentarily held against motion by pressure due to the pressure of the linger on the key. This pressure may be applied in a variety of ways. In the instance illudtrated in Figs. 1-13, I have provided two pressure members, one of which consists of a pin or finger 47 which has a threaded portion that is screwed into a threaded hole in a laterally extending arm 48 of the device 36 and which is provided with a lock nut 49. lVhen the dog rocker is in its forward position the pressure pin or finger 47 engages an in clined surface which preferably consists of the surface of the cap 19 which is beveled for the purpose, as shown in the drawing,

"haid beveled surface having the form of the frustuin of a cone. The action of these parts \Vlll be best understood by reference In Figs. 59 one of the teeth of the escapenlentwheel 22 is shown in section and the general position of the escapement wheel is indicated by dotted lines. A portion of the cap 19 is indicated in section so as to show the manner in which its inclined surface These figures of the drawing are diagrannnatic, and the top of the arm 24 is conveniently represented therein by a rectangle, though this is not the precise form of said arm. Figs. l0-l3 are vertical sections of the parts looking from the rear of the machine, the section Ling taken just inside the lateral arm 48 of the device 36. The position of said arm is indicated by dotted lines.

In Fig. 5 the parts are shown in normal position "with the stepping dog in engagement with a tooth of the escapement rack.

In Figs. 6 and 10 the parts are shown in the position they occupy at the end of the clown-stroke of the key, the steppingtdog 31 being disengaged from the escapenient rack and the rear dog being in engagement with said rack and being held against motion with said rack by the engagement of the pin 47 with the inclined surface of the cap 19. It will be perceived by an inspection of Fig. 6 that as long as the pressure on the key is maintained the pressure between the pin 47 and the cap 19 will prevent the horizontally pivoted rear dog from moving toward the left, as viewed from the back of the machine, under the impulse of the escapement wheel. The instant this pressure is relaxed the escapement wheel begins to move, pressing the rear dog toward the left about its pivot 38 and against the tension of its returning spring 40. In thus moving toward thelet't the rear dogjs controlled or guided by the inclined surface of the cap it) in an oblique path, as \Vlll bc nndcn its stood by Figs. 7 and 8 which show the parts in two intermediate positions on the. return movement of the rocker, and Fig. which shows the parts at the instant when the rear dog is about to be freed from the escapement rack. It will be perceived that as soon as the dog rocker begins its return motion the escapement-rack begins to move, impelled by the spring druni which actuates the carriage. It will be seen that it is impossible for the rear dog to let go of a tooth of the escapement rack before. the stepping dog has been moved toward the back of the.

machine into the path of the next succeeding tooth of the rack. As soon as the rear dog moves free of the escapement rack, it is re turned by the spring 10 to its normal position in engagement with the stop 42. On the forward stroke of the dog rocker the rear clog moves directly toward the escapement. rack, but on the return stroke of said rocker said dog is guided in an oblique path away from said rack. The present escapenient is ext imely rapid, as the carriage is free to begin its motion the instant the pressure on the key is relaxed, which, as wili be understood, is a great desideratum.

The form of the invention shown in Figs. 1e, and 16 is identical in principle with that shown in the other figures of the drawing,l ut differs slightly in details of construction. A teeth 50 which engages the escapement rack proj cts toward the front of the machine froni a curved arm 51 which projects from a ho; or sleeve. 52 which is journaled on the screi 38 and is siurounded by the spring 40 in the same manner as the hub 37. The stop screw 42 engages the curved arm 51 to limit the motion of the parts under the impulse of the spring 40. The pressure pin 47 is threaded through a. hole 53 in another curved arm 5*] which projects from the hub orslcevc 52. This pin or finger engages the inclined or frusto-conical surface of the cap 19 in the same manner as in the other form. in other respects the construction is substantially identical with that above described.

. In Figs. 17 and 18, l have shown a third form of my invention. A cap or wheel 19 rigidly mounted on the end of the shaft iii, being sccurmi by set screws 20' which are threaded through a hub 21 of said cap and engage said shaft. The cap 19 is not beveled. but is cylindrical, and has a. flat rear face. A devicc similar to the device 3i), -1')l' .'1)it?tl on the screw and is normally pressed against the stop Screw 4-22 by a spring it) in the same manner as in the first form above described. The device 36' has a forwardly projecting part "16 which is adapted to engage thc teeth of the escape inent wheel and which coi'istitutes the rear or holding dog. The device. 36 has an arm. a8 which carries a pressure pin or finger 47 which has a. threaded portion which is threaded through a hole 1n the arm 48 and which is also provided with a lock nut '49, all of these parts being similar to the against the face of the wheel 19 by the pressure applied to the key, and as long as such pressure is maintained, the cscapentent wheel and carriage will be held against motion by the friction between the pressure pin and the Wheel. The tendency of the parts to more under the impulse of the carriage spring is resisted by this friction in two ways. in the first place, the pin 47 acts as a brake on the wheel 19 and this alone might be sullicient' to hold the parts. It is to be noted that said pin engages said wheel at a distance from the of said wheel greater than the radius of the pinion 16 (Fig. 1), which gives the brake a certain mechanical advantage over, or leverage on the carriage spring. The friction of the parts resists the carriage spring in the second place by virtue of the fact that the escapement wheel can turn only by rocking the device 36 about its pivot, which would drag the pressure pin 47 across the face of the wheel 19, and this motion of said de-- vice 36 is also resisted by friction. The pinv 47 acts as a brake on the wheel 19, which also, through said pin, acts as a brake on the device 36 which carries the holding dog 46'. The carriage is free. to move the instant the. pressure on the key is relaxed. Thisform of my cscapcnicnt is exceedingly rapid.

It will be perceived that the braking act'ion just described in connection with Figs. 17 and 18, is also part of the operation of the forms of the invention shown in the other figures of the drawing, and in which one of the pressure nien'ihcrs has an inclined sur face. ln the form shown in Figs. ii and in, the carriage is momentarily held by this braking action alone: but in the other forms the parts arc also. held positively by tlnuiin clination of one of thc pressure members as long as the pressure on the key is main laiucd.

in Figs. l9 and 20, l haveshown a form of my invention in which a straight escapc nicnt rack (50 is employed instead of an escapcn'icnt wheel. trlaid rack (30- is mounted .on the carriage in any suitable manner.

The dog rocker is similar to that abovede- "Mos'tlof these parts are similar to the corresponding parts of the first form of the invention, but they are reversed in order to cooperate with rack teeth vwhich move toward the right, as seen from the back of the machine, whereas in the first form these parts cooperate with rack teeth which move toward the left. The arm 2st carries a step ping dog3l" which is pivoted on a pin 33". A device 36, corresponding to the device 36, has a hub which is journaled on a shouldered and headed screw 38" which is threaded into the arm 24". Said device 36 has a forwardly. projecting portion 46 which constitutes the holding dog, and an arm. 48 in the end of which is secured the ad-- justable pressure pin or finger 17. The device 36 is returned 'to and held in normal positionby a spring 40 which at one end is connected with said device and at the other endpresses against a pin 41" projecting from the arm 24". Said spring normally presses said device into engagement with an adjustable stop screw 42" which is threaded through a bracket 43 of the arm 24". lVhen a key is depressed, the arm 24" is rocked forward, moving the stepping dog out of engagement with the rack and moving the dog 46" into engagement with said rack..

At the same time, the pressure pin 47 is moved into'engagement with a cooperating ressui'e member 61 having an inclined surace. In the present instance, this cooper- 4 atmg pressure member consists of a portion of the feed rack which is beveled or inclined as shown in F ig.-19. The pressure finger 47 is situated above and to the left of the pivot screw 38", so that, whenthe device 7 '3 turns about said pivot screw, said ressure finger moves in an upwardly inc incd arc, It is obvious that in thus moving, the pressure finger will be guided by the inclined face of the part 61, which will force the pressure finger and with it the dogrocker toward the back of the machine. It is also obvious that the parts will be held against such motion as long as the pressure on the finger keyis maintained, and that they will be free to move the instant such pressure is removed. The operation is similar in principle to that of the first form.

The rack 60 may or may not be pivotally connected with the carriage. If said rack is pivoted, any suitable means may be providod for loclringsaid rack in its normal position to prevent it from being raised by the pressure pin 47". The member 36 is in effect an angled lever-having the holding dog 46 on one arm thereof and the pressure pin or finger 47 on another arm thereof. This lover is pivoted to the dog carrier on an axis which is substantially parallel with the direction of motion. of said dog carrier and with the axis of the esca e ment wheel. It will be perceived that wiien the dog 46 is in engagement with the escapement wheel, the carriage is held against motion b the pressure member's acting through this ever.

While I have shown and described several modifications of my invention, it will be understood that various other changes in the details of construction and arrangement may be made without departing from the gist of my improvements.

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

1'; In a typewriting machine, the combination with a carriage, of escapement mechanism comprising a rack; key-controlled dogs cooperating with said rack; and a pair of members one of which is pressed by the key into engagement with the other while the dog which is in engagement with the rack is maintained against lateral movement toward a tooth of said rack, said rack being held against motion by such pressure of one of said members against the other.

2. An escapement mechanism, comprising in combination a feed rack, a dog normally out of engagement with said rack, a pressure I the motion of said dog into engagement with said rack. v 1

3. An escapement-mechanism comprisin in combination a feed rack; a dog moun formotion toward and from said feed rack and also mounted for motion with said feed raclgmeans for moving said dog at right angles to said rack to bring the'dog into engagement with said rack; and means compr sing an inclined surface for uidmg sald dog away from said rack in an o lique path, such that as said dog moves away from said rack it also moves with said rack.

4. An escapement mechanism comprising in combination a feed rack provided with an inclined surface; a dog cooperating with said feed rack; and a pressure member connected with said dog and adapted to be pressed against said inclined surface when a key is depressed.

An cscapement mechanism comprising in combination a feed rack; a dog cooperating with said rack; means for moving said dog directly towardsaid rack; and a part having an inclined surface for guiding said dog away from said rack in an oblique path.

(3. In an oscapcmcnt mechanism, the combination with an escapcmcnt rack anda'dog carrier. of two dogs each movable with said dog carrier toward and from said rack and each movable relatively to said dog carrier in the direction of the feed of the rack; and means for momentarily holding one of said dogs against motion in the direction of feed when said dog is in engagement with said rack. said means including a pressure member connected with said dog and a cooperating part having an inclined surface across which said pressure mend er is arranged to lllUYt.

T. An escapement mechanism comprising in combination an esea'pement wheel; a rotary part connected with said wheel and having a frusto-eonical surface; a dog having a pressure men'iber adapted to engage said frusto-conical surface; and means foi' moving said dog into and out of engagement. with said escapement wheel.

8. An escapement mechanism comprising in combination an escapementrack; a part mounted to move with said escapement rack, said part having an inclined surface; a dog having a pressure member adapted to engage said inclined surface; and means for moving said dog into and out of engagement with said rack.

9. An escapement mechanism comprising in combination an escapement rack; a dog carrier; a dog mounted on said dog carrier with freedom of motion in the direction of feed of said feed rack; a pressure member connected with said dog; and a part adapted to be engaged by said pressure member at the end of the movement of said dog into engagement with said rack and to guide said dog in its motion out of engagement with said rack to move in an oblique path.

10. In an escapement mechanism, the combination with the escapementraek; of a dog carrier;-a stepping dog mounted on said dog carrier; a second dog mounted on said dog carrier with freedomof motion in the direction of feed of said rack; a pressure member connected to'said second dog; "and a part adapted to be engaged by said pressure member to momentarily hold said second dog against motion in the direction of feed of said rack when said second dog is in engagement with said rack, and having am inclined surface for guiding the return motion of said second dog in an oblique path.

11. In a typmvriting machine the combination of a carriage; a rack bar mounted on said carriage; a rotary shaft geared .to said rack bar; an cscapcment wheel mounted on said sliat't;.a wheel having a frusto-conical surlace'rigidly mountcd on said shal't a key controlled dog carricr having a stepping dog mounted thcrcon; a second dog pivotally mounted on said dog carrier so as to be tree to move with said escapcmcnt wliccl: a pressure member connected with said second dog and adapted to engage said i'rnsto-conical surface; and a returning vspring {or the said second-dog.

nation with a power driven carriage, of esvcapement mechanism comprising a rack, a

dog carrier, means for moving said dog carrier in a direction substantially at right angles to the direction of feed ofsaid rack, a holding dog pivotally mounted on said dog carrier and having its pivotal axis substantially parallel to the direction of motion of said dog carrier; a spring pressing said dog in a direct-ion the opposite of that in which the rack moves, and means for arresting and retaining said holding dog in rack-holding position until the depressed finger key is released. i

13. In a typewriting machine, the combination with a power driven carriage and keys, of escapement mechanism comprising a feed rack, a dog carrier, a dog pivotally mounted on said dog carrier with its pivotal axis substantially parallel with the direction of motion of said dog carrier, and means for guiding the motion of said dog away from said rack in an oblique. path.

14. An escapement mechanism comprising in combination a feed rack; a lever mounted for bodily motion toward and from said rack and having on one arm thereof a dog which cooperates-With said rack and on another arm thereof a pressure device; and means comprising an inclined surface which is engaged by said pressure device when said dog is in engagement with said rack, whereby said dog is guided away from said rack in an oblique path.

15. An escapement mechanism comprising inicoinbination a feed rack provided with an inclined surface; and a lever. mounted f r bodily' motion toward and from said l Cl and having on one arm thereof a dog which cooperates with said rack and on another arm thereof a pressure member adapted to bepressed against said inclined surface when a key is depressed.

16. In a typewriting machine, the combination of keys; a carriage, and escapement' mechanism comprising a feed rack for said carriage; a key-controllyl lever mounted for bodily motion toward 2nd from said rack and for rocking motion in the direction of feed-of said rack; a dog on one arm of said lover;- a pressure device on another arm of said lever; and a part. having an inclined surface which is engaged by said pressure device when :1 hey is'deprcsscd, whereby said level is momentarily held against. rocking, and said inclined surt'aee acting as a guide For said pressure device while the dog is moving out of engagement with the rack.

17. An escapement mechanism comprising in combination an escapement wheel; a rotary part connected with said wheel and having a frusto-conicai surface; a lever having on one arm thereol adog which cooperates with said cscapement wheel and on the other a pressure device adapted to engage said frusto-conical surface; and means for .moving said lever bodily toward and from said escapement Wheel and said rotary part.

18. In a typewriting machine, the combination with a power-driven carriage, of a feed-rack, two feed dogs adapted-to cooper-v ate with said rack, both of said dogs being spring pressed in a direction opposite to that in which said feed rack moves, and means including cooperating pressure members, one of which is'inclined for holding one of said dogs against motion with said feed rack when a key is depressed and for said dogs, and an 'inclined surface that is engaged by way from said rack in an said pressure member when said dog 15 in engagement with said feed rack and that guides said pressure member away from said feed rack in anoblique path.

20. In a typewriting machine, the combination of apower driven carriage, a feed rack, two feed dogs adapted to cooperate with said feed rack, both of said feed dogs being spring pressed in a direction the oppositeof that in which said feed rack i'noves, two pressure members, one of which is mounted on one of said dogs and one of which is inclined, said pressure members cooperating when said dog is in engagement with the feed rack and guiding said dog in an obliquepath as it moves out'of engage- 'ment with said feed rack.

21. In a typewriting machine, the combi nation with keys and a carriage, of escapement mechanism comprising a rack, a dogrocker, a holding dog mounted. on said dogrocker and movable into and out of engagement with said rack; said holding dog being movable on said dog-rocker in the direction of feed movement of operating said rack, and two copressure members, one of which is power driven carriage, a feed 4 i 1 7 connected with said holdlng dog and comes into contact with the other at the end of the motion of said holding dog into engagement with the rack, said pressure members preventing inotion of said holding do with said rack until the depressed key is re eased. 22. In a typewriting machine, the combiis connected with said holding dog and the other of which is connected with said rack, said pressure members being pressed into engagementby force derived from a key and serving to prevent the holding dog from moving with the rack until the, key is released.

23. An escapement mechanism, comprising in combination a feed rack, a dog normally out of engagemei'it with said rack and mounted for motion in two directions, a pressure member connected ,with said dog, and a member having an iiicliiied surface which is engaged by said pressure member when said dog is in engagement with said rack, the construction and arrangement being such that said pressure member comes into contact with said inclined .surface at the end of the motion of said dog into engagement with said rack.

24. An escapement mechanism comprising in combination a feed rack provided with an inclined surface; a dog cooperating with said feed rack and mounted for motion in two directions; and a pressure member connected with said dog and adapted to be pressed against said inclined surface when a key is depressed.

Signed at the borough'of Manhattan, of New York, in the county of New York, and State of New York, this 14th day of November A. D. 1904.

Jason FELBEL.

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