US1829390A - Typewriter and the like - Google Patents

Description

Oct. 27, 1931. J BARR 1,829,390

TYPEWRITER AND THE LIKE Filed March 7, 1927 3 Sheets-Sheet l J. H. BARR TYPEWRITER AND THE LIKE I Filed March 7, 1927 3 Sheets-Sheet A TTOR/VEY.

I Oct. 27, 1931. I J BARR 1,829,390

TYPEWRITER AND THE LIKE Filed Marth '7, 1927 5 Sheets-Sheet 3 A TTOR/VE).

Patented 0a. 21, 1931 UNITED STATES FA ENT OFFICE I JOHN H. OF ITKACA, YORK, ABSIGNOB TO BABE-MORSE CORPORATION, A.

CORPORATION 0! NEW YORK mnwm'ran AND rm: LIKE Application m Iarch 7, 1921. Serial no. 113,271.

This invention relates to typewriters and the like, and particularly to the control of the letter and line spacing movements of the platen thereof.

It is frequently desirable to move or transport typewriting machines, and in such cases tends upwardly and forwardly from the carriage in order to beconveniently accessible for manipulation when the carriage is to be returned and line spaced, and it is desirable to decrease the extent to which it projects above the machine in order to permit use of a smaller shipping or carrying case.

An object of this invention is to provide an improved typewriter or the like, with which line spacing handle may be lowered in order to decrease the size of the case required to contain the typewriter for shipping or carrying purposes, and with which the carriage may be locked against movement while being carried or transported.

A further object of the invention is to provide improved means for controlling the travel of the carriage, with which the carriage may be secured against endwise movement in either direction. with the strainremoved from the escapement so as to-avoid injury thereto by shocks or stresses .while the typewriter is being transported.

A further object of the invention is to provide improved and simplified line spacing mechanism for the platen which will be exceptionally compact and durable in construction. and with which the number of line spa ccs through which the platen is moved at each operation may be varied selectively.

further object of the invention is to provide an improved typewriter or the like, with which the locking of the carriage and the lowcring of the line space handle may be accomplished with a minimum number of manual operations, and the carriage locking and line spacing performed with a minimum number of parts.

A further object of the invention is to provide an improved construction for accomplishing, each or all of the above objects, which will be relatively simple and inexpensive.

Various other objects and advantages will be apparent from the following description of an embodiment of the invention, and the novel features will be particularly pointed out hereinafter in connection with the appended claims.

In the accompanying drawings Fig. 1 is a side elevation of a portion of a typewriter constructed in accordance with th1s invention;

Fig. 2 is a front elevation of the same;

Fig. 3 is another end elevation of the same, and illustrating parts controlling the travel of the carriage;

Fig. 4 is an elevation of the escapement mechanism of the same;

Fig. 5 is a similar, fragmentary elevation illustrating the condition of the escapement mechanism when the carriage is locked for transportation Fig. 6 is a sectional elevation of a portion of the carriage and illustrating parts of the linerspacing mechanism, the section bein taken approximately along the line 6-6 0 Fig. 2;

Fig. 7 is a similar elevation with the'parts in a difierent operative'relation to one another, and with a portion of the platen ratchet wheel broken away to show parts otherwise hidden thereby;

Fig. 8 is a sectional plan of a portion of theline-spacing mechanism, the section being iaken approximately along the line 8-8 of Fig. 9 is an elevation of a pawl of the linespacing mechanism;

Fig. 10 is an end elevation of the same;

Fig. 11 is a fragmentary elevation of the lever for varying the number of line spaces the platen will be shifted at each operation of the line-spacing handle;

- also be provided with a-suitable -'platen 6- shaft 7 in end plates 8 of the carr age.

embrace a track bar 4 on the frame, therebeing ball or rolling bearingsinterposed between the track bar 4 and thegrooves or guides3 of thecarriage, as usual: in typewriter constructions. The typewriter may which is rotatably mounted by its spindle or 'A, rack bar 9 (Fig.3) may be secured to the carriage so as to extend in the direction of'its travel, and is provided with rackteeth meshin with a pinion 10, the latter being couple by a clutch 11 to a suitable escapement device 12. The carriage is thus, given a step by step movement in letter spacing surface 15 of a clutch lever 16, so that when the release lever 13is shifted in one direc- 7 tion, the clutch lever 16 will be shifted todisconnect the clutch and release the carriage direction for letter spacingpurposes underv the control cf the escapement, as usual in the art. A carriage release lever 13ma .be mounted on the carriage and connecte by suitable mechanism-to a cam plate or bar 14 which itshifts against or away from a cam from the e'scapement mechanism. Such clutch release mechanism is disclosed'and claimed in my co-pending application Serial No. 141,390, filed October 13, 1926 to which reference may be had for a more complete I description of th1s carriage release mechanism. The foregoing details ofthe carriage release mechanism are per se no part of the.

from dropping downward through hole present invention.

Referring now particularly to Figs. land 7 a 2, a U-shaped bracket member 17-is secured ings 18 for rotatably supporting a cylindri-; cal spindle or shaft 19 having a flat portion 20 extending along the same at one side. a This shaft or spindle 19 is providedwith a channel ,or groove 21 (Fig. 12) extending along its side, preferably elther opposite the flattened edge 20 or at a portion of the peripheral sur-- face of the spindle spacedfrom the flat edge portion 20, and in this groove 21 a rod 22 isv slidingly mounted.

A hub 23 of a line space handle 24 is fitted over the spindle 19, and this hub is provided with an aperture 25 in its side wall into which an angular end 26 of the rod 22 extends, so

that the rod 22 and line space handle will be locked together for concomitant sliding movement along the spindle 19. An axial passage 27 through the boss of the line space handle contains a section which conforms inconfiguration to the external peripheral shape :of'the spindle 19, including the flat edge 20 form a continuation of the passage 27 exactly corresponding to the periphery of and closely fitting the spindle 19, exceptfor the groove 21, and provide a rotatable driving conn ction between them.

The upper end of the spindle 19 may be reduced in size at the point which is rotatably mounted in the upper arm of bracket 17, the shoulder on the spindle thus formed abutting against the bracket varm to revent n arm upward movement of the spindle. 28, (Figs. 1, 2and 8) is provided with a boss having a passage 29 through which the spindle 19 extends, the passage 29 being formed in the same manner as the passage 27 of the line space handle boss 23, that is, by first drilling the passage nearly through, and then punchin out the remaining undrilled end .wall. his passage 29 thus is also keyed by its close contact with the flattened edge 20 [t0 the spindle for rotation therewith, and the arm 28 may also be secured against both rotation and endwise movement on the spindle 19 by a set screw 29a.- .The lower face of arm 28. bears on the lower arm of bracket 17, thus. preventing spindle 19 18 which is the size of the spindle. The parts are assembled by inserting 19 first 11 wardly through the lower bracket arm 1 1,

then assembling thereon the parts to be carried thereby, and then tightening screw 29a.

The arm 28 is provided with an extension 30' having an aperture 31 adjacent its free end, and the arm 28 is so mounted angularly upon the spindle 19 that when the line space handle is in its normal forwardly projecting position, as shown in Figs. 1 and 2, the extension 300i the arm 28 will extend approximately parallel with the adjacent end wall -8 of the carriage.

A wire link 32 extends loosely through an aperture 86 in the end plate 8 of the carriage, and at one end it extends through the aperture 31 and is bent angularly as at 33 to prevent withdrawal of the link 32 from the extension 30. The other end of the link 32 is bent angularly to the length of the link, as

at 34, and this angular end is rotatably received in one arm of a bell crank lever 35, the extreme free end of the angular end 34 being bent over as at 36 to prevent withdrawal of the link 32 from the aperture in the bell crank 35 through which it passes. The bell crank 35 is pivotally mounted by a screw or pin 37 upon an inclined surface 38 (Fig. 2) of the carriage. The arm of the bell crank 35 to which the link 32 is connected, normally extends approximately crosswise of the length of the link 32, and the other arm of the bell crank extends generally in the direction of travel of the carriage. Another link 39 may be rotatably hooked, one end at 40 (Fig. 2) into an angular end 41 of the last named arm of the bell crank 35, and at its other end is bent angularly thereto and then endwise to provide a bearing .ortion 39a (Figs. 2 and 6) which is rotata ly received in a bearing aperture 42 (Figs. 6 and 7) in a pawl 43. 1

The pawl 43 is pivoted by a pin 44 to one end of a lever 45, and the latter is pivoted by pin or screw 46 to an end plate 8 of the car riage so as to swing in a plane transversely of the longitudinal axis of the platen, the portion of the lever between the pivot pin 44 of the pawl and its -own pivot pin 46 being bowed, if necessary, in order to clear the hearing shaft 7 of the platen. A tail portion 47 on the pawl 43 cooperates with a pin 48 upon the lever to limit rotation of the pawl 43 in a direction to carry its nose 49 out of driving engagement with the teeth of a ratchet wheel 50 provided upon one end of the platen 6. When the line space handle 24 is rocked in one direction, which is preferably in a direction to return the carriage and start a new line, the spindle 19 will be rocked and the latter, acting through the arm 28, extension 30, link 32, bell crank 35 and link 39 will cause a downward pull upon the pawl 43, thus tending to rock the nose 49 of the latter into drivingengagenient with the teeth of the ratchet wheel 50, and movement of the pawl and ratchet wheel together during the continued movement of the line space handle.

A suitable stop 51 may be provided upon the carriage within the-path of travel of the pawl 43 with the lever 45, so as to limit movement of the lever 45 and pawl 43 together under the influence or actuation of the line space handle. The pawl 43 and lever 45 will thus at. each operation of the line space handle 24, be shifted through a definite driving path, so that if the pawl is in driving engagement with the ratchet wheel during the entire movement, the ratchet wheel will be given a similar angular movement. If the pawl is held out of engagement with the teeth of the ratchet wheel during a portion of such movement of the line space handle, then the line space handle and the platen will only be given an angular movement proportional to the extent of travel of the pawl after its engagement with the ratchet wheel.

A helical tension spring 52 is connected at one end to the bell crank 35, and at its other end to a suitable anchorage pin 53 of the carriage frame, so as to normally return the bell crank 35 and through it the line space lever 24 to normal position. During such return. the link 39 will first tend to rock the pawl 43 in a direction to disengage its nose 49 from the teeth of the ratchet wheel of the platen, until such disengagement occurs and the tail 47 of the pawl strikes the pin 48 on the. lever 45. Thereafter, continuation of the thrust from the link 39 to the pawl 43 will cause a return movement of the pawl 43 and the lever 45 to initial or starting position. which is shown in Fig. 6.

In order to hold the pawl 43 out of engagement with the platen ratchet wheel during a portion of the movement of the lever 45 in' a line spacing direction, I may rotatably mount a controlling lever 54 by a pivot pin or screw 55 upon the adjacent end plate 8 of the carriage, with a tail portion 56 of the lever 54 extending along the path of travel of thc pawl 43 with the lever 45. The pawl 43 may be provided with a laterally extending pin 57 which strikes against and rides along an edge of the tail 56, when the pawl is rocked in a direction to engage with the ratchct wheel. The tail 56 of the lever 54 will thus hold the pawl 43 out of driving engagement with the ratchet wheel 50 of the platen until the pin 57 rides off the tail portion, after which the pawl will be rocked into engagement with the ratchet wheel by the pull of the link 39 thereon as the latter shifts the pawl and lever 45 together further in the line spacing direction. The controlling lever 54 may be rocked about the pin 55 into or out of a position in which its tail 56 prevents movement of the pawl 43 into engagement with the ratchet wheel 50. In Figs. 6 and 7 the lever 54 is illustrated as in the position which it occupies when its tail 56 is in a position to prevent engagement of the pawl 43 during a portion of the driving stroke. The same position of the lever 54 is shown in dot-ted lines in Fig. 11.

When the controlling lever 54 is shifted or rocked angularly into the position shown in full lines in Fig. 11. the tail portion 56 will be rocked out of the path of travel of the pin 57 sufiiciently to permit rocking of the nose 49 of the pawl 43 into driving engagement with the teeth of the platen ratchet wheel at the very outset of the driving stroke imparted to the pawl by the line space handle. Thus in that case the ratchet wheel will be given a full movement until the pawl nose 49 strikes the stop 51. By varying the angular position of the lever 54, the extent of movement given the platen ratchet wheel at each actuation of the line space handlemay be selectively varied;

' In order to hold the controiling lever 54 in the different angular oradjusted positions which have been referred to, the end late 8 may be provided with a plurality apertur'es 58 into which a resilient finger 59 of the lever 54 may snap when the lever is in such different angular positions. Thus the lever 54 will be yieldingly held in each of the positions into which it may be adjusted. Movement of the lever 54 in a direction to carr its tail. 56 out of the path of travel of t e pin 57 maybe limited by a suitable pin 60 provided upon the end plate 8 of the carriage. in a position for engagement by the resilient finger 59 of the lever 54 when the latter reaches its position in ,which the tail 56 is out of a position in which it controls the pawl 43. Movement of the lever 54 in the other direction is limited by the engagement wardly with the line space handle- Thus by lowering the line space handle 24 when the rod 22- is aline'd with the aperture 63, the f i to the ear 73 of the dog rocker 66 and at its lower end of the rod 22 may be shifted into or through the aperture 63 in the bracket and to lock the carriage against movement in either direction. The bracket 61 is so positioned that this locking occurs when the carriage is in approximately its central position,

'as shown in Fig. 2, and the a erture63 is so located in the bracket that w en the locking rod 22 is received therein to effect a looking of the carriage against movement in either direction, the carriagewillbe locked in such a position that the escapement device will be in what may be termed a half space or partially released position.

Referring particularly to Figs. 4 and 5, the teeth 64 of the escapement wheel cooperate successively with a bevel or fixed dog 65 on a dog rocker 66, and a stepping or loose dog 67 pivoted at 68 on the rocker 66. An arm 69 is pivotally hung upon pin 70, also carried by the rocker 66, and this arm is pressed yieldingly against a relatively long, approximately straight edge of the dog 67 by a leaf spring 71. The spring 71 is secured at one end of the arm 69 near the pin 70, and extends along and diverges from the arm toward the free,

end thereof. The free end of the spring bears against an adjustable screw 72 threaded through an ear 73 of the dog rocker 66. The spring 71 and arm 69, by bearing upon the straight edge of the loose dog 67 yieldingly urge the dog 67 into the full line position shown in Figs. 4 and 5, and acts as a resilient buffer or stop for limiting movement of the dog 67 under the force thereon of a tooth 64 of the escapement wheel.

When the carriageis normally at rest, a tooth of the escapement wheel rests against the loose dog 67 and holds the latter in the dotted line positions of Figs. 4 and 5. At the end of the first step of the escapement, the dog rocker 66 is rocked to disengage laterally the loose do 67 from a tooth64 and to shift dog 65 into the path of the same toot-h of the escapement wheel, Fig. 4, at which time the loose dog will snap into the position shown in full lines in Fig. 4. When the carriage is locked by the dropping of the line space handle and the entry of rod 22 into aperture 63, the loose dog 67 will be'in the path of the teeth 64 and the carriage will have moved approximately a half step, at which time the loose dog 67 and the teeth 64 will occupy the relation shown by full lines in Fig. 5, their relation 'in a full step escapement being shown by dotted lines in Fig. 5. Thus, when the carriage is locked in a half space or step position, there will be no material strain or pressure between the teeth 64 of the escapement wheel and the dogs 65 and 67, and no injury can come to the same by shocks given the t pewriter. The normal position of the loose 0g and of the wheel may be varied by adjustment of the screw 72.

.A tension spring 74 is connected at one end other endto a pin 75 on a stationary part of the escapement frame 76. The spring 74 'yieldingly urges the rocker 66 in a direction to carry the loose dog 67 into the path of the teeth'64 of the escapement wheel, the rocker 66 being moved in the opposite direction in the usual manner through the action of the type bars.

' The downward movement of the boss 23 of the line space handle may be limited by a spacing boss 77 mounted on the spindle 19 above the arm 28. The boss 23 of the handle,

' however, may be yieldingly held in its upper postion, in which it abuts against the upper arm of the bracket 17, by a leaf spring 78 which is secured at one end in any suitable manner, such as by screws 79 to the upper face of the upper arm of the bracket 17 the free end of the leaf spring projecting from the arm of the bracket then being bent downwardly so as to extend parallel to and spaced from the spindle 19, the extreme free tip end of this spring 78 being bent obliquely, as at 80, and then in a'reverse direction as at 81, so that the oblique portion 80 will hook over the lower end of the boss 23 of the line space handle when the latter is in its upper limit of movement. as shown in Fig. 1.

When the line space handle is forced downwardly, the lower end edge of the boss 23 of the handle will act against the oblique surface 80 of the leaf spring and cam the latter outwardly, and as the boss 23 continues to descend, the portions 80 and 81 of the leaf spring will ride along the side surface of'the handle boss. lVhen the carriage is so positioned that the rod 22 is aligned with the aperture G3, lowering of the handle will project the rod 22 into the aperture 63 and lock the carriage against movement in either direction. lVhen the carriage is so locked, the escapement mechanism will be in a half or partial space position, as shown by full lines in Fig. 5, from which it will be observed that there is no stress between the escapement wheel and escapement dogs which would tend to injure the same by any shocks or blows on the carriage.

To release the carriage for use, it is merely necessary to elevate the line space handle until the portion 80 of the spring again snaps under the lower end of the boss 23 of the handle and yieldingly holds it in upper position. During such movement the rod 22 will be shifted upwardly along the groove 21 of thespindle 19 and removed from locking engagement with the plate 62. By rocking the line space handle in the usual manner, the,

carria 1e may be returned and the platen rotated in a direction to present a new line in printing position, the extent of rotation of the pl: ten in this manner being determined my the position of the controlling lever 54.

It will be obvious that various changes in the details, which have been herein described a l ,rated, in. order to explain the nature lliffinvention, may be made by those skilled. in the art within the scope and principle of the invention as expressed in the appended claims.

Claims i. In a typewriting machine or the like, a frame. a carriage movable relatively to said frame, means including an escapement for contr lling the travel of the carria e, a platen mounted on said carriage, an line spacing mechanism movable for line spacing of the platen, said line spacing mechanism having a part movable in one direction without causing a line spacing operation of the platenand when so moved cooperating with said frame to lock the carriage against travel in a half space position of said escapement when the carriage is in one position of its travel. whereby the escapement will be relieved of stresses due to forces acting upon the carriage and tending to move it in either direction.

2. In a typewriting machine or the like, a frame part, a carriage part movable rela tively to said frame part for letter spacing purposes. m-apement means controlling the relative movement of said parts, and means carried by one of said parts and co-acting with the other of said parts for looking together said parts against relative movement in a partial space position of said escapement.

3. In a typewriting machine or the like, a frame part, a carriage partmovable relatively to said frame part for letter spacing purposes. and escapement means permitting step by step relative movement of said parts in a letter spacing direction, one of said parts having a portion provided with an aperture, the other of said parts having a locking element movable transversely of such relative movement and into and out of said aperture, whereby when the locking element is in said aperture, it will lock said parts against relative movement and with the escapement means in a partially spaced condition.

4. In a typewriter or the like, a frame, a carriage movable relatively to said frame in a letter spacing direction, an escapement device including an escapement member and escapementdogs for controlling the relative movement of carriage and frame, said frame having a portion with an aperture opening transversely of the direction of relative movement of said frame and carriage, and a looking element mounted on the carriage and movable thereon transversely of'the direction of such relative movement into and out of the aperture when alined therewith for locking the carriage and frame against relative move ment and so positioned relatively to one another as to effect the interlocking of the frame and carriage when said dogs are out of engagement with said escapement member in a partially letter spaced relation, whereby the escapement member and dogs will be relieved of stresses due to forces tending to cause such relative movement of the carriage and frame.

5. In a typewriter or the like, a frame, a carriage movable relatively to said frame in a letter spacing direction, an esca ment device including an escapement mem er and escapement dogs for controlling the relative movement of carriage and frame, said frame having a portion with an aperture opening transversely of the direction of relative movement of said frame and carriage, a locking element mounted on the carriage and movable thereon transversely of the direction of such relative movement into and out of the aperture when alined therewith for locking the carriage and frame against relative movement and so positioned relatively to one another as to effect the interlocking of the frame and carriage when said dogs are out of engagement with said escapement member, whereby the escapement member and dogs will be relieved of stresses due to forces tending to cause such relative movement of the carriage and frame, a platen carried by said carriage and movable thereon for line spacing purposes, and means including said locking element for causing line spacing movements of said laten.

6. In a typewriter or t e like, a frame part, a carriage part mounted for movement relatively to said frame part, means including an escapement member and dogs for permittin letter spacing relative movements of sai frame and carriage parts in a 'step by step manner, and a locking element carried by one of said parts and rojectable therefrom into and out of loc ing engagement with the other part, whereby relative movement ofsaid parts is prevented and said parts held in a partial letter spaced position, with the stress ofthe escapement member removed from the dogs.

7. In a typewriter or the like, a frame, a carriage movable relatively to said frame for letter spacing purposes, means including an escapement member and cooperating dogs for causing step by step letter spacing movements of said carriage relatively to the frame, and a locking element carried by the carriage and projectable into and out of locking engagement with said frame for locking the carriage against movement relatively to said frame, and with the escapement member and dogs in a half letter space position with the pressure of the escapement member relievedfrom the dogs, whereby said escapement member and dogs will be protected from stresses tending to cause relative movement of the frame and carriage.

8. In a typewriter or the like, a frame, a carriage movable relatively to said frame for letter spacing purposes, means including an escapement member and cooperating dogs for causing step by step letter spacing movements of said carriage relatively to the frame, a lockin element carried by the carriage and projecta le into and out of locking engagementwith said frame for locking the carriage against movement relatively to said frame, and with the escapement member and dogs in a half letter space position with the pressure of the escapement member relieved rom the dogs, whereby said escapement member and dogs will be protected from stresses tending to cause relative movement of the frame and carriage, a platen mounted on said carriage and shiftable relatively thereto for line spacing purposes, and means including said locking element for causing line spacing movements of said platen.

9. In a typewriter or the like, a frame, a carriage movable relatively to said frame for letter spacing travel, a platen mounted on said carriage for letter spacing travel therewith and movable relatively to said carriage for line spacing purposes. means including an escapement member and dogs connected between the frame and carriage for permitting letter spacing relative movement of the carriage and frame in a step by step manner, an element mounted on said carriage for endwise movement into and out of lockently of its movement into and out of lock-- ing engagement with the frame, and means controlled by the oscillation of said element for imparting line spacing movements to said platen.

10. In a typewriter or the like, a frame, a carriage movable relatively to said frame for letter spacing travel, a platen mounted on said carriage for letter spacing travel therewith and movable relatively to said carriage for line spacing purposes, means including an escapement member and dogs connected between the frame and carriage for permitting letter spacing movement of the carriage and frame in a step by step manner, a line spacin element having an operating handle extending forwardly from the carriage and mounted for oscillation on said carriage, said element having a portion movable endwise of the axis of oscillation to lower the handle and concomitantly project said movable portion into locking engagement with the frame, whereby when said projecting part of said element is in locking en agement with the frame the carriage and Erame will be held against relative movement, with the dogs of the escapement free of pressure from the escapement member, and a connection between said line spacing element and said platen for imparting line spacing movement to the latter upon oscillation of the handle.

11. In a typewriter or the like, a frame, a carriage movable relatively to said frame for letter spacing travel, a platen mounted on said carriage for letter spacing travel therewith and movable relatively to said carriage for line spacing purposes, means including an escapement member and dogs connected between the frame and carriage for permitting letter spacing relative movement of the carriage and frame in a step by step manner, a line spacing element havin an operating handle extending forwardly rom the carriage and mounted for oscillation on said carriage, said element having a portion movable endwise of the axis of oscillation, to lower the handle and concomitantly project said movable portion into locking engagement with the frame,-- whereby when said projecting part of said element is in locking engagement with the frame the carriage and frame will be held against relative movement, with the dogs of the escapementv free of pressure from the escapement member. a connection between said line spacing element and said platen for imparting line spacing movement to the latter upon oscillation of the handle, and means for yicldingly holding said line spacing handle in its upper posi tion with the carriage unlocked from the frame.

12. In a typewriter or the like, a frame, a carriage movable relatively to said frame for letter spacing travel, a platen mounted on said carriage for letter spacing travel therewith and movable relatively to the carriage for line spacing purposes, means including an escapement member and dogs connected between the frame and carriage for permitting letter spacing step by step relative movement of the carriage and frame, a spindle rotatably supported by said carriage and disposed in a direction transverseto the direction of relative travel of the carriage, a line spacing handle keyed to said spindle for oscillation therewith and slidable thereon endwise along the axis of oscillation of said spindle, a connection between the spindle and platen for imparting line spacing movements to the platen upon oscillation of the spindle by said handle, and a locking member movable endwise with the handle into and out of locking engagement with said frame, whereby when said handle is lowered to reduce the height of the typewriter, said locking member will be interlocked with the frame to prevent relative movement of the carriage and hold it in a partial letter spacing position of the escapement, whereby pressure of the escapement member upon the dogs will be relieved.

13. In a typewriter or the like, a frame, a carriage movable relatively to said frame for letter spacing travel, a platen mounted on said carriage for letter spacing travel therewith and movable relatively to the carriage for line spacing purposes, means including an escapement member and dogs connected between the frame and carriage for permitting letter spacing step by step relative movement of the carriage and frame, a spindle rotatably supported by said carriage and disposed in a direction transverse to the direction of relative travel of the carriage, a line spacing handle keyed to said spindle for oscillation therewith and slidable thereon endwise along the axis of oscillation of said spindle, a connection between the spindle and platen for imparting line spacing movements to the platen upon oscillation of the spindle by said handle, a locking member movable endwise with the handle into and out of locking engagement with said frame, whereby when said handle is lowered to reduce the height of the typewriter, said locking member will be interlocked with the frame to prevent relative movement of the carriage and hold it in a partial letter spacing position of the escapement, whereby pressure of the escapement member upon the dogs will be relieved. and means for yieldingly holding the handle in its upper position with the locking member withdrawn from locking engagement with the frame.

14. In a typewriter or the like, a frame, a carriage movable relatively to said frame for letter spacing travel, a platen mounted on the carriage for letter spacing travel therewith and movable relatively to the carriage for line spacing purposes, and escapement means connected between the carriage and frame for controlling their relative movement, and means supported by the carriage for imparting step by step line spacing movements to the platen and including an operating member mounted for oscillation on said carriage while imparting line spacing movements, said member being also movable downwardly in order to decrease the effective height of the typewriter, and having a part projectable into locking engagement with the frame when so lowered, whereby the carriage and frame will be held against relative move ment when said member is lowered.

15. In a typewriter or the like, a frame, a carriage movable relatively to said frame for letter spacing travel, a platen mounted on the carriage for letter spacing travel therewith and movable relatively to the carriage for line spacing purposes, and escapement means connected between the carriage and frame for controlling their relative movement, means supported by the carriage for imparting step by step line spacing movements to the platen and including an operating member mounted for oscillation on said carriage while imparting line spacing movements. said member being also movable downwardly in order to decrease the effective height of the typewriter, and having a part projectable into locking engagement with the frame when so lowered, whereby the carriage and frame will be held against relative movement when said member is lowered. and means for yieldingly holding said member in its upper unlocked position.

16. In a typewriter or the like, a frame, a carriage movable relatively to the frame for letter spacing travel, a platen mounted on the carriage for letter spacing travel therewith and movable relatively to the carriage for line spacing purposes, alined bearings carried by said carriage with their axes extending transversely of the direction of relative movement of the carriage and frame, a spindle rotatably mounted in said bearings, a line spacing handle mounted on said spindle between said bearings, said handle being keyed to the spindle for oscillation therewith and also movable endwise on said spindle, an arm secured to said spindle, and means connected between the arm and platen for line spacing the latter upon oscillation of said handle, and a locking part movable with the handle along the spindle into and out of locking engagement with the frame, whereby when said handle is in one position along the spindle said frame and carriage will be held against relative movement.

17. In a typewriter orthe like, a frame a carriage movable relatively to the frame orletter spacing travel, a platen mounted on carried by said carriage with their axes extending transversely of the direction of relative movement of the carriage and frame, a spindle rotatably mounted in said bearings, a line spacing handle mounted on said spindle, said handle being keyed to the spindle for oscillation therewith and also movable endwise relatively to the axis of said spindle, an arm secured to said spindle and means connected between the arm and platen for line spacing the latter upon oscillation of said handle, a locking part movable with the handle along the spindle axis into and out of locking engagement with the frame, whereby when said handle is in one position along the spindle axis said frame and carriage will beheld against relative movement, and a latch for holding said handle in its position along the spindle axis in which the carriage is unlocked from the frame.

' 18. In a typewriter or the like, a frame, a carriage movable relatively to the frame for letter spacing travel, a platen mounted on the carriage for letter spacing travel therewith and movable relatively to the carriage for line spacing purposes, alined bearings carried by said carriage with their axes extending transversely of the direction of relativc. movement of the carriage and frame, a

spindle rotatably mounted in said bearings,

a line spacing handle mounted on said spindle, said handle being keyed to the spindle for oscillation therewith and also movable endwise relatively to the axis of said spindle, an arm secured to said spindle, and means connected between the arm and laten for line spacing the latter upon oscillation of said handle, a locking part movable with the handle along the spindle axis into and out of locking engagement with the frame, whereby when said handle is in one position along the spindle axis said frame and carriage will be held against relative movement, and a latch device for yieldingly holding said handle in one position along the spindle axisin which the carriage is released from the frame.

19. In a typewriter or the like, a frame. a carriage movable relatively to the frame for letter spacing travel, a platen mounted. on the carriage for letter spacing travel therewith, and movable relatively to the carriage for line spacing purposes, alined bearings carried by said carriage with their axes extending transversely of the direction of relative movement of the carriage and frame, a spindle rotatably mounted in said bearings, a line spacing handle mounted on said spin- (116 between said bearings, said handle being keyed to the spindle for oscillation therewith and also movable endwise on said spindle, an

arm secured to said spindle, and means connected between the arm and platen for line spacing the latter upon oscillation of said handle, a locking part movable with the bandle along the spindle into and out of locking engagement with the frame, whereby when said handle isin one position along the spindle said frame and carriage may be held against relative movement, and a spring latch having an oblique latch surface engageable with the handle for yieldingly holding the handle in its position on the spindle in which the carriage is released from the frame.

20. In a typewriter or the like, a frame, a

carriage movable relatively to said frame. a platen carried by the carriage, said carriage having alined bearings with their common axis extending transversely of the direction of relative movement of said carriage, a spin dle rotatably supported in said bearings, means connected between said spindle and platen for line spacing the latter, a spacing handle having a boss slidable along and keyed to said spindle, a locking element also slidable along the spindle and connected to said boss, whereby when said handle is moved along the spindle in one direction, saidlocking elemcnt may be moved. into locking engagementwith the frame to prevent relative movement of said carriage and frame, and a spring carried by one of said bearings and engaging with said handle boss to hold said handle yielding ly in a position on the spindle in which the carriage is released from said frame.

21. In a typewriter or the like, a frame, a carriage movable relatively to said frame, a platen carried by the car a e, said carriage having alined bearings with their common axis extending transversely of the direction of relative movement of said carriage, a spin dle rotatably supported in said bearings, means connected between said spindle and platen for line spacing the latter, a spacing handle having a boss slidable along an d keyed to said spindle, said spindle having a channel extending endwise along the same, and a locking rod slidable in said channel and having an angular end interlocked with said boss. whereby said locking'element will be moved endwise with said handle into and out of engagem ent with said frame.

22. In a typewriter or the like, a frame, a carriage movable relatively to said frame, a platen carried by the carriage, said carriage having alined bearings with their common axis extending transversely of the direction of relative movement of said carriage, a spindle rotatably supported in said bearings. means connected between said spindle and platen for line spacing the latter, a spacing handle having a boss slidable along and keyed to said spindle, said spindle having a channel extending endwise along the same, a locking rod slidable in said channel and having an angular end interlocked with said boss, whereby said lockin element will be moved endwise with said handle into and out of en agement with said frame, and means for ho ding the handle in its position on the spindle in which the carriage is released from the frame. 23. In a typewriter or the like, aframe, a carriage movable relatively to said frame, a platen mounted on said carri e, line spacin mechanism mounted on sai carriage an connected to said laten, said mechanism in cluding a rotatable spindle having a chan-- nel oove along one side of the same, a handle aving a boss mounted on said spindle and having an aperture in its side leading to its bearing on said spindle, a rod sliding in said channel and having an angular end received in said aperture whereby when said handle moves endwise on said spindle, said rod will be moved into and out of locking engagement with the frame, one side of the spindle having a flat edge, and said handle boss having a cylindrical ole drilled from one and nearly to the other, and the remainder of the boss formed to fit closel to the spindle includin its flat edge, whereb the boss will be slidingl y keyed to the spindle. 24. In a typewriter or the like, a frame, a carriage movable relatively to said frame, a platen mounted on said carriage, line spacing mechanism mounted on said carriage and connected to said laten, said mechanism including a rotatab e spindle having a channel groove along one side of the same, a handle having a boss mounted on said spindle and having an aperture in its side leadi to its bearing on said spindle, a rod sliding in said channel and having an angular end received insaid aperture whereby when said handle moves endwise on said spindle, said rod will be moved into and out of locking enga ement with the frame, one side of the spind e having a flat edge, and said handle boss having a cylindrical hole drilled from one end nearly to the other, and the remainder of the boss formed to fit closely to the spindle including its flat edge, whereby the boss will be slidingly keyed to the spindle, and a slprin device engageable with said boss for yie ding y holding it in a position in which the carriage is released from the frame.

25. In a typewriter or the like, a platen, a support in which the platen is rotatably mounted, a ratchet wheel connected to the platen, an arm mounted on said su port for movement in a plane transverse to t e laten axis, a pawl mounted on said arm an movable thereon into and out of engagement with the ratchet teeth, operating means connected to said pawl for moving the same towards engagement with the ratchet teeth and also rocking said pawl and arm together, a sto member having an abutment surface extend ing along the ath of travel of the pawl with said arm, an preventing movement of the pawl into engagement with said teeth during wheel and platen by the at least an initial portion of the travel of said arm and pawl, said stop member movable to vary the instant in the travel 0 the pawl with the arm, at which the pawl is released therefrom for movement into engagement with the ratchet teeth, whereby the extent of movement imparted to the ratchet angular movement of sai arm and paw may be varied, said stop member including a lever having a tail portion extendin approximately tangentially along the path of travel .of the pawl with said arm, whereby rocking of said lever will carry said tail portion out 3 the typewriter is to be enclosed, and a spring- I? actuated detent operable between saidcarriage and said handle to hold the handle releasably in its elevated line spacing movements.

27. In a typewriter or the like, a frame, a laten carnage movable relatively to the i rame for letter spacing travel, line 5 acing mechanism carried by the carriage incliiding an operating handle extending upwardly into a position convenient for manual operation in returning the carriage and line spacing the platen, said handle being mounted for oscillation and also being slidable vertically, the connections between said handle and mechanism causing line spacing of said platen when said handle is oscillated while in an position into which it may be vertically a usted, and a detent operable between said carriage and handle for locking the handle releasably in its upper position, whereby the handle may be lowered for com actness when the typewriter is to be enclose in a case.

28. In a typewriter or the like, a frame, a platen carriage movable relatively to the frame for letter spacingl travel, line spacing mechanism carrie by t e carriage including an operating handle extending upwardly into a position convenient for manual operation in returning the carriage and line 5 acing the platen, said handle being mounted for oscillation and also being slidable vertically, the connection between said handle and mechanism causing line spacin of said platen when said handle is oscillate and a detent automatically spring actuated into locking position between the carriage and handle when the handle is shifted vertically, and operable position ready for to release the handle for lowering when the typewriter is to be enclosed in a case.

J OHN H. BARRc Cpawl duringa 'ven I

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