US1115871A - Type-writing machine. - Google Patents

Description

O. H. SHEPARD.

TYPE WRITING MACHINE. APPLICATION FILED .TAN.29, 1914.

1,1 1 5 ,871 Patepted Nov. 3,1914

INVENTUR,

4514M WW HlEATTDRNEY UNITED sa n'rn'srarnuf ornror'a YJHARLES H. SHEPARD, or JAMAICA, NEW YORK, nssrenon TO mnmme'ron TYPE- WRITER: COMPANY, or ILION, NEW roan, A COPLPORATION or NEW YORK.

ryrn-wnrrmntiaemwiek Application filed January 29, 19143 semrnt. 815,129.

To aZZ'whom it may concern: L

Be it known that 1, CHARLES H. SHEPARD, citizen of the United States, and residentof J amaica, in the-county of Queens and State of New York, have invent-ed certain new and useful Improvements in Type-VVriting Machines, ofavhich the following is a specification.

My invention relates to typewriting machines and more particularly to carriage escapement mechanism for such machines.

One ofthe objects of my invention, generally stated, is to provide an escapement which is comparatively simple in construction and which is rapid, efficient and reliable in use. a y

A further object of my invention is to provide an improved escapement mechanism which may be regulated to feed ordinary or reverse as may-f'be desired.

Another object of my invention, generally stated, is to provide improved cushioning means for absorbing the shock incidental to the let-01f or drop of the carriage, thereby producing an easy acting escapement free from the usual shock or jar and one in which the noise ordinarily produced bythe feed of the carriage is greatly re duced or entirely eliminated.

To the above and other ends which will hereinafter appear, my invention consists of the features of construction, arrangements of parts and combinations of devices set forth in the following description and particularl pointed out in the appended claims.

In the accompanying drawings wherein like reference characters indicate correspending parts in the various views, Figure yl ing machine to illustrate m i vention in its embodiment therein. Fig. 3 is a. View which corresponds substantially to Fig. 2 except that the' parts are shown as they are .normally disposed when arranged for, everse T feed. Fi 4 is detail fra D inentarfy sectional view showing a modified form of cushioning means. Fig. 5 1s a dia- Specification of Letters Patent.

ment therewith from side to side Patented rev. :3, ma.

grammatio rear view showing parts of the escapement mechanism as they appear when arranged for-ordinary feed and indicating in dotted lines the disposition of the engaging portions of the dogs as they appear just before the release of the wheel by the normally engaged dog. Fig. 6 is a diagranr matic view showing the parts of the escapement as they fappear when arrangedfor reverse feed and showing the engaging portions of dogs in dotted lines as they appear just before the release of the wheel by the normally engaged dog.

I have shown my invention in the present instance embodied in a No. 10 Remington machine. It should be understood, however, that the invention may be embodied in various styles of typewriting machines and that various changes may be made accordingly.

The frame of the machine comprises a top plate 1 which supports fixed guide rails 2 oppositely grooved to receive anti-friction balls or rollers 3, the latter also being received in oppositely grooved guide ways 4 in the front. and rear rails which constitute, a portion of the carriage 5. platen 6 is carried by the carriage for movethe machine over the top plate 1. The carriage is power driven, being moved under control of its escapement mechanism by a spring drum '7 which has one end of a band 8 connected thereto at 9. The opposite end of the band is connected to a bracket arm 10. which is secured to the carriage by screws 11; Ears 12 are secured to the carriage, and pivoted to the ears at 13 are rearwardly extending arms 14 to which a feecl'rack 15 is connected. This rack engages a feed pinion 16 fixed to the forward endof a shaft 17 which turns in abearing 18 secured to the top plate of the machine. To the rear end of the shaft 17 is fixed an cscapement rack or wheel 19. Thus the hub 20 of the escapement wheelis tapped 'to receive a screw 21 whiclnbears at its inner end against a flattened portion on the rear end portion of the shaft 17, to fixedly connect the escapement wheel to the shaft.

A bracketplate 22 is fixed by screws 28 to A cylindrical From an inspection of Figs. 1 and 2 it will be seen that a shouldered pivot screw v, 25 is received at its threaded end in a tapped opening in a supporting plate 26 and turns pivotal bearing for said supporting plate 26. The supporting plate 26 is provided with a laterally projecting extension or lug 27 which constitutes a stop or contact. The stop 27 is adapted to co-act with a second contact device 28, which is preferably. made of felt or some such suitable material, and is carried at the upper end of a set screw 29. This screw is received'in a tapped opening ina laterally projecting arm or lug 30 which extends from the supporting plate 22. The screw 29, sheathed at its end as at 28, constitutes an adjustable stop with which the stop 27 co-acts to limit the pivotal movement of the supporting plate 26 in one direction. 'The plate 26'is slotted at 31 for the reception of one end of a C-spring 32, the opposite end of said spring being secured by a screw 33 to the fixed bracket plate 22. The power of the spring 32 tends to turn the supporting plate 26 on its pivot 25 so as to move the stop 27 out of contact with its cooperative stop 29. However, the

force of the spring drum, exerted through the escapement wheel and through the feed dogs, is sutficient to overcome the power of thefspring 32 and turn the plate 26 on its pivotto bring the stop 27 into contact with the sheathed end of the stop 29, as will hereinafter more clearly appear. 4

There are two feed dogs 34 and The dog 34 has a rearwardly engaging portion 36 which projects laterally from the plane of the body portion of the dog, said engaging portion being adapted to move into and out of engagement with the escapement wheel in the plane of the latter. The dog 34 is pivoted at 37 to an arm, lever or carrier 38, pivoted on a shouldered pivot screw 39 to the movable support 26. The tail of the feed dog 34 carries a laterally projecting abutment 40 which overlaps the supporting arm or carrier 38 for the feed dog and limits the relative movement between the dog and carrier in one direction. A spring 41 is fixed at one end to the supporting arm or carrier 38 .and bears at its free end against the body portion of the dog 34 above the pivotthereof in order to normally maintain the dog on its carrier in the position shown in Fig. 1. It will be understood, however,

that when the parts are disposed as indicated in Fig. 3, and the carriage is moved from left to right to begin a new line of 7 writing, the escapement wheel will receive a reverse rotation in the direction of the arrow inFig. 3. During such movement of the escapement wheel the dog 34 will be turned on its pivot 37 against the pressure at one end to the carrier 44, and bears at its free end portion against the tail of the feed dog 35 below the pivot thereof. When the parts are normally disposed as indicated in Fig. 1 a backward rotation of the escapement wheel is effective to turn the feed dog 35 on its pivot 43 so as not to obstruct the escapement wheel in its reverse rotation.

In the normal position of the parts, shown in Fig. 1, the tail of the feed dog 35 bears against the body portion of the arm or carrier 44 to limit the relative movement between the feed dog 35 and its carrier in one direction and the spring 46 normally maintains the feed dog 35 in such position. The carrier 44 has a slot 47 therein, the center of the are forming said slot corresponding to the pivot of the carrier. A pin or post 48 (see Fig.2) extends laterally from the plate-like support 26 and is tapped at its outer end to receive a shouldered screw 49. This screw passes through the slot, the head of the screw overlapping the slot to guide the carrier 44 and limit its pivotal move ments in opposite directions. Thearm or carrier 38 is extended beyond its pivot 39 to form an arm 50 which constitutes one element of a toggle. The upper end of this arm is pivoted, at 51, to a link 52 which constitutes the other element of the toggle.

I have provided means by which either feed dog may be made the normally engaged dog, 'and by which either ordinary or reverse feed of the carriage may be provided, as desired. In the present instance I have provided means by which an actuating member for the escapement may be connected to the carrier 44, when the parts will be normally positioned as represented in Fig. .1 for ordinary feed, or said member may be connected to the carrier 38, so that the parts may be normally disposed in the positions represented in Fig. 3 for reverse feed. This actuating member in the present instance comprises a link 54 which I in dotted linesjin Fig. 3.

may be actuated by the key controlled universal bar in the usual manner, a downward pull on the link being efi ected at each actuation of a printing key. Any suitable means may be employed for readilv efliecting a connection between this link and? either of the dog carriers 38 and 44. In the present instance I have provided a laterally projecting pin 55 at the upper end of the link, said pin having a head 56, as shown in Fig. 2. The pin is adapted to be'received in an open-mouth bearing opening 57 formed in the carrier 44:. The mouth of this bearing opening is closed by a spring 58, secured at 59 on the edge of the carrier &4. By deflecting the free end of the spring to the left, as the parts appear in Fig. 3, the pin 55 may be displaced from the bearing opening 57 so as to disconnect the link from the carrier at. The carrier 38 is also provided with an open-mouth bearing opening corresponding to the opening 57 and in which 'the'pin 55 may be seated to connect the link 54 with the carrier 38. A spring is formed as an extension of the spring 41, and extends at its free end over the open mouth of the bearing opening in the member 38, as indicated The combined spring 41 and 60 is connected to the upper edge of the carrier 38, as indicated at 61. It will be understood that the spring devices 58 and 60 enable the link to be readily disconnected from one dog carrier and connected with the other. v

When the link 54 is connected to the dog carrier 44, as shown in Fig. 1, the feed dog 35 will normally engage the escapement wheel, and the parts will be set or arranged for ordinary feed. On the other hand, when the link 54 is connected to the carrier 38, as shown in Fig. 3, the feed dog 34 will be the normally engaged dog and the parts will be set or arranged for reverse feed, all as will hereinafter more clearly appear. I

A contractile spring 62 is connected at one end to the actuating device or link 54, as indicated at 63, the opposite end of said spring being connected to a swivel 64. This swivel is carried by a set screw 65 which is received in a tapped opening in a post or.

pin 66 which projects rearward'ly from the fixed supporting bracket 22. The tension of the spring 62 may be varied by adjusting the screw, 65-, thusenabling a variation in the power of-the spring 62 to be exerted on the feed dogs to return them to normal'position, and to assist in some instances to resist the advance of the escapement wheel; c

When the parts are set or arranged 'for ordinary feed as indicated in Fig. -1,'-' the operation of the printin key is effective to pull down the link 54 as the type bar approaches the printing position. The effect of this movement of the link' is a withdraw the normally engaged feed dog 35 from, say, the tooth b of the wheel, and to simultaneously move the normally disengaged dog 34 toward the tooth Z) of the escapement wheel. From an inspection of Fig. 5 it will be understood that when the engaging portion 42 of the feed dog 35 moves from the full line to the dotted line position shown in this figure, the engaging portion 36 of the feed dog 34 is moved from the full line to the dotted line position in said figure. From a comparison of the positions of the dogs in Fig. 5 it will be seen that the engaging portion 36 of the normally disengaged capement skipping. As the feed dog 35 continues its movement away from the escapement wheel the dog 34- will continue to advance toward the working face of the disengaged tooth b of the wheel to arrest the latter before it has had an opportunity to advance under the action of the spring drum. The dogs at this time will be in positions corresponding substantially to the position of the dogs shown in Fig. 3.

lVhen pressure is released on the depressed finger key the link 54- will move upwardly under the action of the returning spring 62, thus moving the dog 35 upwardly into the path of the next advancing tooth c of the escapement ,wheel, and moving the dog 34 from the position corresponding to that shown in Fig. 3 to the position of said dog represented in Fig. 1. It will be understood that during this return movement of the dogs to normal position thetooth Z) of the eseapement wheel will follow up the dog 34 in its retrograded movement until the wheel is finally arrested by the next tooth o oi the wheel co-acting with the dog 35. It will be understood that in the movements 01": the feed dog 35' into and out o't engagement with the escapement wheel, thc engaging portion 42 of this dog will describe a path which is substantially radial of the escapement wheel as indicated in l ig. 6. Onthe other hand the movement of the engaging portion 36 oi the dog 3 1 int'o and out of engagement with the escape- I ment wheel describes a path which is at substantially right angles to the movement of the engaging portionof the dog 35, and

in such. movement the part 36 advances to- ,ward andrecedesfro' n the working face of "an, oncoming-tooth otthe escapement wheel.

When the partsareset as represented in Fig. 3 for reverse feed the downward movement of the actuating link is efiective to withdraw the normally engaged dog 34 from the escapement wheel. Referring particularly toFig. 6 the dot and dash line 90 therein shown may be presumed to represent the working face of the engaged tooth of the escapement wheels As the link 54 moves down from the position shown-in Fig. 3, the engaging portion 36 of the feed dog 34: will move from the full to the dotted line position represented in Fig. 6, and throughout this movement an advance of the escapement wheel will be effected. From an inspection of this figure it will be seen that most of the letter feed advance of the car'- riage has taken place (an advance of the Wheel from :0 to 19) before the dog 35 is dis engaged from the wheel, and before such disengagement has been effected the engaging portion 42 of the feed dog 35 has been moved from the full to the dotted line position represented in this figure so as to be interposed in the path of the next advancing tooth 0 of the escapement wheel. When the dog 34 disengages the wheel a further advance movement thereof will be effected until it is arrested by the dog 35. This advanceof the escapement wheel is eifected during the down stroke of the key and during a movement of the type bar to the printing position. At the completion of this down stroke the dogs will be positioned substantially as represented in Fig. 1, it being understood that a letter space advance of the carriage has taken place at this time. Vhen pressure on the depressed finger key is released the dog 3% will again advance to the position shown in Fig-.3, attaining such position before the escapement wheel has had an opportunity to advance.

The pressure of the escapement wheel exerted on the feed dogs is resisted by and is finally exerted against the spring 32, and the carriage spring pressure is suflicient to overcome the power of the spring 32 as hereinbefore pointed out. \Vhen both of the feed dogs are free from engagement with the escapement wheel the pivoted support 26 is turned on its pivot so as to carry the stop 27 away from the upper endof the stop 29. \Vhen the let-off or drop of the carriage is eifected, it results in a shock or pressure being exerted by the escapement wheel on either of the feed dogs. This pressure overcomes the power of the spring 32 and the pivoted support 26 is turned on its pivot until the support is arrested by the stop 29, as indicated at Fig. 11 The construction and arrangement of the parts thus described, and the power of the spring 32 are such as to cushion and absorb the shock incidental to the let-01f or drop of the carriage, or to the action of the escapement wheel on the dogs, thus avoiding the noise ordinarily incident to the feed of the carriage. The abovet result is attained whether the feed dog 3 f or the dog .35 be made the normally engaged dog or, in other words, Whether manner to the parts. This results in an escapement which is easy inits action and greatly reduces or entirely eliminates the noise ordinarily incidental to an operation of the escapement.

In Fig. 4: I have shown a modified form of cushioning device cooperating with the pivoted support 26. In this modified form of construction, a rod (37 is pivoted at its upper end, as at 68, to the pivoted support 26. The lower end of this rod carries a piston 59 which works in a cylinder 70. A spring 71 is interposed between the closed bottom of the cylinder and the head of the piston to return the piston head and the parts connected therewith to normal position. The cylinder is fixed on a bracket 72 which is secured by screws 7 3 to the fixed supporting bracket 72. The construction thus described constitutes a dash pot connected to the pivotal support 26 to resist the movement of the latter under the action of the escapement wheel on the feed dogs and to absorb the shock incidental to the actioir nent rack (circular), or wheel 19 on the feed dogs; that the support 26 is movable only in a plane at right angles to the axis of the escapement wheel; that when the link 54 is connected to the carrier 4A the mech- 1 anism is set to operate indefinitely as an ordinary escapement, whereas .when the link 5a is connected to the carrier 38 the mechanism is set to operate indefinitely as a reverse escapement; that the feed dogs carriers and intermediate connections con- 'stitute an escapement device which is in the nature of an anchor escapement device having pallets or dogs positively connected by jointed connections to move in unison and by which the movement of one pallet or dog into the path of an oncoming tooth of the escapement wheel will be effected before the other pallet or dog disengages the wheel.

While I have describedwith considerable particularity one form of construction embodying my invention it will be understood that various changes may be made without departing fromthe spirit and scope thereof.

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

1. In a typewriting machine, the combination of a power driven carriage; and escapement mechanism therefor, said escape rack on said feed dog,

ment mechanism comprising an escapement rack, a feed dog the engaglng POItlOIlOf which 1s movable 1n the plane of the rack into and out of engagement'therewith, and

\dog, and a yi'eldingly supported carrier separate from the feed dog and its controllingmeans and on which the feed dog-is movably mounted.

3. In a typewr'iting machine, the combination of a power driven carriage; and escapement' mechanism therefor, said 'escapement mechan sm comprising an escapement rack, a feed dog' the engaging portion of which is" movable in the plane 'of the rack into and out of engagement therewith, a support mounted for a limited movement andIon'which'the feed dog is independently movable into and out of engagement with said feed rack, and resilient means which tends to resist a movement of said support under the action of the t. In a, typeivriting machine, the combination of a powemdrlven carrlage; and escapement mechanism therefor, saidescapement mechanism comprising an eseapement rack, a feed dog the engaging portion of which is movable in the plane of the'rackinto and out of engagement therewith, a; support pivoted to swing in a plane coin-- cident or parallel with the plane of the feed. rack and on which the'feed dog is inclepemiently movable into and out of engage-.- ment with the feed rack, and shock absorbing mea s which tend to resist a pivotal movement of said suport under-the action" of thrrack on said feed dog." 7

5. in a typewriting maehine,.the eombi-. nation of a power driven carriage; an' es- 'capement mechanism therefor includingmeans for affording either ordinary or' reverse feed as maybe desired, and also including one? Zoning. means for absorbing the shock incidental to fthe let-off or. drop of the carriage Whether the carriage be feeding under ordinary or reverse feed, and final stopping. means for (3. In a typewriting machine, the combination of a POWGI'IlI'IVIl carriage, an escanement wheel, escapement dogs, therefor,

dog carriers, means for actuating said dog carriers, final stopping or. limiting means for said dog carriers, and intermediate cushioning means for said Wheel and dogs.

7 In a typeW-riting machine, the combination of a power drlven carriage and escapement mechanism therefor comprising feed dogs, a separate carrier for each feed dog, operative connections between said carriers, an actuating device, and means for connecting said actuating device to one or another of said carriersfthe esc'apement mechanism operating for reverse feedwhen, said ac tuatlng device 1s connected to one carrier and operating for ordinary feed when the actuating device is connected to the other carrier. I

8. In a typewriting'machine, theconthi-SBO nation of an escapement wheel, esc: pement, dogs, dog carriers, Ea cushioned sup} art for said dog carriers, a final ,stop' v for *said support, and means for actuating 'said dogs.

9. In a typew'riting machinathe combination of 'a power drlven carriage an escapement mechanism therefor comprising feed dogs, a separate carrier foreach feed dog, operative connections between said car'- riers, an actuating device, means for con- 40 necting said actuating device to one or an other of saidcarriers, the escapementlmechanismoperating for. reverse? feed when said actuating device -is'-c'onnected 'to one carrier, and operating for ordinary feed when the actuating device is connected to' a the other carrier, and cushioningmeans for absorbing the shock ,incidental to the drop or f let-off of the carriage whether the carriage be feeding under brdinary 10 or reverse feed. v 5 -v 10. In a typewriting machine, the combi- -nation of-a power driven carriage; and;es-

capement mechanism therefor "comprising an escapement wheel, coiiperative relatively? movable feed dogs, a support, an' arm pivoted intermediate its ends to said support a nd"consti tut ing a carrier for one of said feedtdogs, a second arm pivoted to said support and constituting a carrier for theother of said dogs, a link connecting said arms, and means for actuating said arms.

- 11. Ina typeW-riting machine, the combination of a power driven carriage; andes capement mechanism therefor comprisin z;- an escapement wheel, cooperative relatively m vable feed dogs, a support, an arm pivoted intermediate its ends to said support and constituting a carrier for one of said feed'dogs, a second arm pivoted to said sup- 12 port atone end and constituting a carrier n 1 O escapement wheel, cooperative relatively 39 rier movable feed dogs, a su port, an arm pivot-' an escapement wheel, cooperative relatively movable feed dogs, a support, an arm pivoted intermediate its ends to said support and constituting a carrier for one of said feed dogs, a second arm pivoted to said support at one end and constituting a carrier for the other of said dogs, a link connected at one end to one end of said first mentioned arm and at its other end to the other arm and intermediate the ends of the latter, means for actuating said arms, and cushioning means for said support. 4

14. In a typewriting machine, the combination of a power driven carriage; and escapement mechanism therefor comprising an escapement wheel, two feed dogs which co-act therewith, the engaging portion of one of said feed dogs moving into and out of engagement with the wheel in a line which is substantially radial of the wheel,

an engaging portion of the other dog moving toward and away from the working face of the oncoming tooth of the escapement wheel as said dog engages and disengages the wheel, and imeans whereby either dog may be made the normally engaged dog and the escapement mechanism be set to feed either ordinary or reverse as may he desired.

15. In a typewriting machine, the combination of a power driven carriage; and escapement mechanism therefor comprising an escapement wheel, two feed dogs which coact therewith, the engaging portion of one of said feed dogs moving into and out of engagement with the wheel in a line which is substantially radial of the wheel, the engaging portion of the other dog moving toward and away from the working face of the oncoming tooth of the escapement wheel as said dog engages and disengages the wheel, an actuating device, and means for variably connecting said actuating device relatively to said dogs and thus set the escapement mechanism to feed either ordinary or reverse as may be desired.

16. In a typewriting machine, the combination of a power driven carriage; and escapement mechanism therefor" comprising an escapement wheel, two feed dogs which co-act therewith, the engaging portion of one of said feed dogs moving into and out of engagement with the wheel in a line which is substantial radial of the Wheel, the engaging portion of the other dog moving toward and away from the working face of an oncoming tooth ofthe escapement wheel as said dog engages and disengages the wheel, means whereby either dog may be made the normally engaged dog and the escapement mechanism be set'to feed either ordinary or reverse as may be desired, and cushioning means for absorbing the shock incidental to the drop or let-ofi' of the carriage whether the carriage be feeding under ordinary'or reverse feed.

17. In a typewriting machine, the combination of a power driven carriage; and escapement mechanism therefor comprisin an escapement wheel, two feed dogs whic co-act therewith, the engaging port-ion of one of said feed dogs moving into and out of engagement with the wheel in a line which is substantially radial of the wheel,

the engaging portion of, the other dog of said dogs is made the normally engaged dog.

, 18. In a typewriting maehme, the combination of a power driven carriage; and escapement mechanism therefor comprising.

an escapement wheel, a support movable only in a single plane at right angles to the axis of the escapement wheel, feed dogs carried by said'suppor't and movable thereon so that the engaging portions of said dogs move in the plane of the escapement wheel into and out of engagement therewith, and cushioning means which tend to resist the movement of said support.

19. In a typewriting machine, the combination of a power driven carriage; and escapement mechanism thereforcomprising an escapement wheel, a support movable only in a single plane at right angles to the axis of the escapement wheel, feed dogs carried by said support and movable thereon so that the engaging portions of said dogs move in the plane of the escapement wheel into and out of engagement therewith, cushioning means for said support, operating means for said dogs, and means for varying the operative connection of said operating means relatively to said dogs to set the escapement mechanism to feed ordinary or reverse? as may be desired.

20. In a typewriting machine, the combination of a power driven carriage; and escapement mechanism therefor comprising an escapement wheel, feed dogs, toggle connections between said feed dogs for movmg one of the dogs into engagement with said wheelwhen the other dog is moved out of engagement'therewith, and means for actuating said toggle.

21. In a typewriting machine, the combi- 1-0 nation of a power driven carriage; and escapement mechanism therefor comprising an escapement wheel, feed clogs, toggle con nections between said feed dogs for moving one of the dogs into engagement with said wheel when the dther dog is moved out of engagement therewith, and means for actuating said. toggle, the movement of one dog into the path of an oncoming tooth of the. escapement wheel being effected before the other dog is disengaged from the wheel.

22. ,iln a typewriting machine, the combination. of a power driven carriage; and escapementmechanism therefor comprising an escapement wheel, feed dogs, toggle eons nections between said feed dogs for moving one of the dogs into engagement with said wheel when the other dog is moved out of engagement therewith, means for actuating said toggle, and means by which eitherdog may be made the normally engaged dog.

23. In a typewriting machine, the combi nation of a power driven carriage; and escapement mechanism' therefor comprising an escapement wheel, feed dogs, toggle connections between said feed dogs for moving one of the dogs into engagement with said wheel when the other dog is moved out of engagement therewith, means for actuating said toggle, and means by which a change 40 in the point of connection between said actuating means and toggle may be effected to afford ordinary or reverse feed as may be desired.

26 In a typewriting machine, the combination of a power driven carriage; and escapement mechanism therefor com rising an cscapement wheel, feed dogs, togge connecticns between said. feed. dogs for moving one'of the dogs into engagement with'said wheel when 'the other dog is moved out of engagement therewith, means for actuating said toggle, and means by which either dog may be made the normally engaged dog, the movement of one dog into the path of an oncoming tooth of the escapement wheel being eifected before the other dog is disengaged from the wheel irrespective of which dog is the normally engaged dog.

25, In a typewriting machine, the combination of a power driven carriage; and es said wheel when the other dog is moved out of engagement therewith, means for actuating said toggle, a movable support for said toggle and feed dogs, and cushioning means which tend to resist the move ment of said support under the action of the power of the carriage applied through said feed dogs.

26. In a typewriting machine, the combination of a power driven carriage; and escapement mechanism therefor comprising an escapement wheel, feed dogs, toggle connections between said feed dogs for moving one of the dogs into engagement with said wheel. when the other dog is moved out of engagement therewith, means for actuating said toggle, the movement of one dog into the path of an oncoming. tooth of the eseapement wheel being efl'ccted before the other dog is disengaged from the wheel, a movable support for said toggle and feed dogs, and cushioning meanswhich tend to resist the movement of' said support under the action of the power of the carriage applied through said feed dogs.

27. In a typewriting machine, the combi nation of a power driven carriage; and escapement mechanism therefor comprising an escapement.wheel, feed dogs, toggle connections between said feed dogs for moving one of the dogs into engagement with said. wheel when the other dog is moved out of engagement therewith, means for actuating said toggle, the movement of one dog into the path of an oncoming tooth of the escapement wheel being veifected before the other dog is disengaged from the wheel, a movable support for said toggle and feed dogs, and cushioning means which tend to resist the movement of said support under the action of the power of the carriage applied through said feed dogs irrespective of which dog is the normally engaged dog.

28. In a typewriting machine, the combination of a power driven carriage; and escapement mechanism thereior comprising an escapement wheel, feeddogs, toggle connections between said feed dogs for moving one of the dogs into engagement with said wheel when the other dog is moved out of engagement therewith, means for actuating said toggle, means by which a change in the point of connection between said actuating means and toggle be effected toafiord ordinary or reverse feed as may be desired, a movable support for said toggle and feed dogs, and cushioning means which. tend to resist the movement of said supportunder the action of the power of the carriage applied'through said feed dogs and irrespective of whether the carriage is feeding under ordinary or reverse feed.

29. In a typewriting machine, the eombination of an escapement Wheel, eecapement dogs therefor, pivotallymounted dog carriers, positive connections between said carriers, and dog actuating means adapted to be connected at will to either of said carriers so as to cause the cscapement to operate at will either as an ordinary feed escapement or as a reverse feed escapemcnt.

30. In a typcwriting machine, the combination of an escapement wheel, escapement dogs therefor, connections adapted to cause said dogs to coact with the escapement Wheel to operate at will either as an ordinary feed or a reverse feed, final stopping means for said dogs, and intermediate cushioning means therefor.

31. In a typewriting machine, the combination of a power driven carriage; and escapeinent mechanism therefor comprising an escapemcnt wheel, an anchor 'eseapement device cooperative therewith and having the pallets thereof positively connected by jointed connections to move in unison and by which the movement of one pallet into the path of an oncoming toot-h of the escapement wheel will be effected before the other pallet discngages' the wheel, and means whereby either pallet may as desired be made the normally engaged pallet and the escapement be made to feed ordinary or reverse accordingly.

32. In a typewriting machine, the combination of a power driven carriage; and es capement mechanism therefor comprising an escapenient w ieel, an anchorescapement device cooperative therewith and having the pallets thereof positively connected by jointed connections to move in unison and by which the movement of one pallet into the path of an oncoming tooth of the escapement wheel will be effected before the other pallet disengages the wheel, an actuating device for said anchor escapement device, and means whereby said actuating device may be connected to one or the other of the carriers of said pallets to cause the eseapement mechanism to feed ordinary or *reverse as may be desired.

In a typewriting machine, the'combination of a power driven carriage; and escapemcnt mechanism therefor comprising an escapement wheel, an anchor escapement device coilperative therewith and having the pallets thereof positively connected by jointed connections to move in unison and by which the movement of one pallet into the path of an oncomingtooth of the escapement wheel will be effected before the other pallet disengages the wheel, a movable support on which the parts of said anchor escapement device move in the operation thereof, and cushioning means for resisting the movement of said sup ort under the action of the escapement wln l on the pallets'" 34. In a typewriti g machln he combination of a power driven carriage; and escapement mechanism therefor comprising an escapement wheel, an anchor escapement device cooperative therewith and having the pallets thereof positively connected by jointed connections to move in unison and by which the movement of one pallet into the path of an oncoming tooth of the escapement wheel will be effected before the other pallet 'disengages the wheel, means whereby either pallet may as desired be made the normally engaged part and the escapement mechanism be made to feed 0rdinary or reverse accordingly, a movable support on which the parts of said anchor escapement device move in the operation thereof, and cushioning means for resisting the movement of said support under the action'of the escapement Wheel on the pallets and irrespective of whether the escapement mechanism is operating as an ordinary or reverse 'escapement.

35. In a typewriting machine, the combination of a power driven carriage; and escapement mechanism therefor comprising an escapement rack, two feed dogs, the engaging portions ofwhich move in the plane of the feed rack into and out of engagement therewith, and means for controlling said feed dogs so that they may be caused to operate indefinitely to afford reverse feed or may be caused to operate indefinitely to afford ordinary feed as may be desired, said means including means by which either feed dog may be made the normally engaged dog. I

86. In a typewriting machine, the combi nation of a power driven carriage; and escapeinent mechanism therefor comprising an escapement rack, two feed dogs, both of which always receive movement on their support at each printing operation, and means for controlling said feed dogs so that they may be caused to operate indefi- 'nitely to afford reverse feed or may be caused to operate indefinitely to afford ordinary feed as may be desired, said means. including means by which either feed dog may be made the normally engaged dog.

37. In a typewriting machine, the combination of a power driven carriage;"and es capement mechanism therefor comprising an escapement rack, two feed dogs both of which always receive movement on their support at each printing operation, one of said dogs in its movement to disengage the rack affording an advance of the-carriage whereas the other dog in disengagingthe rack moves substantially in the plane of the working face of the engaged tooth of the rack so'that no advance of the carriage is afforded during the disengaging movement of said last mentioned dog and While it still engages the rack, and means for controllingsaid feed dogs so that they may New 9851;

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