US1571721A - Typewriting machine - Google Patents

Description

Feb. 2 1926.

E. B. HESS ET AL TYPEWRITING MACHINE Filed June- 11, 1925 Patented F b. 2, 1926.

UNITED STATES- 1,571,121 PATENT OFFICE.

EDWARD B. HESS, OF NEW YORK, AND C. MYEBS,--.OF FREEPOBT, NEW YORK,

ASSIGNORS 'IO ROYAL TYPEWRITER COMPANY, INC., OF NEW YORK, A. CORPORA- TION OF NEW YORK.

TYPEWBITING MACHINE.

To all whom it may concern: i I

Be it known that we, EDWARD B. Hess and Lewis G. MYERS, both citizens of the United States, the former residing atNew York, county and State of New York, and the latter at Freeport, county of Nassau, and State of New York, have invented certain new and useful Improvements in Typewriting Machines, of which the followingis a specification.

The invention herein disclosed relates to line lock, margin stop and bell ringing mech anism, and is illustrated as applied to a small portable Royal---machine although various features may be used in machines of other types.

One. object of the various constructions disclosed is to provide devices which shall be compact in construction and yet efiicient in operation, thus adapting them to be employed in small portable machines. The various details which constitute the subject matter of our invention will be described fully in the specification and covered by the appended claims.

in the drawings: a

Figure 1 is a rear view of the carriage and a portion of the frame of the machine showin the main features ofthe invention.

*igure 2 is a side view of the machine with parts in section.

Figure 3'is a perspective view of the margin stop and associated parts.

The drawings show a portion of a frame A, type key.lever' B, carriage C, platen D carried thereby, paper table E, a card guide roll shaft F supported by arms on a rod 7'' pivoted in the side lates of the carriage, a universal b ar G, an a type bar H. So far as the invention is concerned, these arts are or may be generally of any desired construction and they are illustrated in the form in which they. appear in the Lit tle Royal machine.

Mounted in the side plates 1 of the carriage is a margin sto rod 2 shown as rectangular in cross-section and having slidably mounted thereon margin stop blocks 3 and 4. The retaining device for these blocks comprises a plate having side members 5 which pass downward on each side of the stop rod and are connected at their lower ends by a screw 6 which passes through ears in the margin stop block and serves as a' f mounted machine has the doub Application filed' June 11, 1925. Serial No. 86,465. i

pivot for-:the retaining member or latch. At

the other end of the block, the latch member has a portion 7 underlying the stop rod and adapted to engage the teeth 8 on the lower edge thereof. A finger piece 9 which is hollow contains a coil spring 10 which bears against the top of thestoplock and normally retains the detent portion 7 in engagement with the rack teeth 8. When it is desired to move the stop from one position to another, the finger piece 9 is depressed slightly, moving the engaging portion 7 out of the rack and allowing the stop to be moved endwise in either direction by appropriate pressure on the finger piece. On top of the latch member is placed Ya short plate 12 which is held thereto bylneans of a screw 11 passing through anelongated slot, -thus ermitting adjustment ,of the plate. The ot er end of the plate has downturned ears 13 which en gage the body of the latch member. This plate carries an indicatin markl l which is adapted to register wit a-scale 15 carried by the upper ed of the papertable E. In this manner t e indicating portion of the stop may be adjusted relatively to the stop itsel between the indicating mark 14 an contact with the arms f carrying the card.

guide roll. a t

The stop-3'Fat the right hand side of the. in the bell and thereafter operating the line 105:. The stop block 3 is therefore provided with a freely swinging trip 19 pivoted at 20 to the body of the block. This ha aan, ear

21 which engages the body of the stop block to prevent movement of the trip in one direction relatively thereto. A portion of the stop block 3 is extended downward and rearward as at 22 .and is adapted to operate the line locking mechanism as hereinafter set forth. The stop at the left hand side of the in order to obtain exact re istfiy t e gradations on the scale 15. It may be noted e function of ring I machine a proiecting portion 23 some-- what slmilar to t e ortion 22 which is adapted to contact wit the center stop and the left. An offset lug 31' on the bracket 28 limits-the movement of the bell trip member 20 in the opposite direction: The 'hole 33 in the bell trip member through which the pivot screw 27 passes is elongated in the direction of the carriage movement. The spring 32 which is attached to the bell trip member and to the bracket 28 tends to ull the bell trip member toward the left in. Eigure 1. Since the point of attaehment of the spring is'between the plvot pomt 27 and the offset abutment 31, this abutment acts as afulcrum. Normally the bell trip rod or striker occupies the position indicated at X in Fi re 1. When it'is moved by engagement of the tri 19. with the upper end thereof, it is roc ed on the pivot 27 to-the position indicated at Y. As the tr1p 19 slips off the upper end; the striker swings under the influenceof gravity and the spring. 32'

and passes slightly beyond the position indicated at X to a position indicated at Z, wherein it is in contact with the bell. this time there has been a movement of the striker at the pivot point permitted by the elongated slot 33. The contact with the bell is only momentary and the spring mmediately returns the striker to the position 1ndicated at X, wherein it is out of contact with the bell. This construction avoids the usual practice of mounting the striker on a len h of flexible wire and ermits the stri or to lie clear of the bell w en in inoperative sition.

Attac ed to the frame of the machine at the rear and lower part thereof is a bracket 34 having ears 35 to which are pivoted correspending ears 36 of a center stop member by means of a screw bolt '38. The means which fastens the bracket 34 to the frame of the machine also fastens in position a bracket member 39 which has a forwardly extending portion 40 at the lower end thereof in which is threaded a stop screw 41 which acts to limit the movement of an arm 42lpro ecting from the universal bar frame G. hne lock member 43 is pivoted to the center stop at 44 and lies in front of the same. At the left hand side looking from the rear, it has a bent edge 45 which overlies the edge of the center stop. This line lock member extends downwardly to 'a much greater distance from a pivot 44 than it does upwardly, thus enabling a relatively slight movement of the upper end'of the member to produce a considerable movement of the lower end there-- of. When the portion 45 is engaged by the projection 22 on .the margin stop and the line lock member is swung, the lower end thereof is moved into position to overlie the portion 46 on the end of the arm 42 projecting from the universal bar and thus step movement of the universal bar. The line lockmember 43 is swungin the other direction by means of a spring 47 attached to the line lock member at one endand at its other end to a pin 48 on the center stop member. The movement of the line lock member 43 under the influence of the spring 47 is limited by a lip 49 which comes in contact with the center sto member. 1

After the line has been locked, it is fre-' quently desirable to beable to add a few additional characters. Accordingly there is provided a release key 50 which is pivoted on the usual pivot rod 51 for the front links in this type of machine and guided by the comb guide 52. This release key lever is connected by a link 53 with a projection 54 from the lower portion. of the center stop'member 37 A depression of the key, 50 will pull on the link 53and rock the whole center stop -member 37 about its pivot 38, moving-the upper portion of the stop member to the rear and the lower portion toward the front 'of the machine. The line lock member 43 of course moves with the center stop in this movement. Sincethe lower end of the line lock-member moves in an arc of a circle, it is given sufiicient movement by depression of the release key to permit the center stop to be actuated, although this end of the line lock member is still in a vertical plane overlying said universal bar. However, the rearward movement of the upper end of the center stop is sufiicient to movethe stop and line lock member clear of the portion 22 of the margin sto and the line lock member therefore-imme iately returns to inoperative position. When the release key is now released, the center stop will engage the end of the portion 22 and the carriage is free to move in letter space direction; It may be noted that one reason for having the line lock member43 overlie the front face of the center stop and provided with a bent over portion overlying the edge of the center stop is to prevent the end of the member 22 on the margin stop engaging between the center stop and the line lock member. The center stop with the line lock member normany is held in operative position by a suitable spring such .as is indicated at 55.

It will be noted that our invention provides a small compact construction of parts which may be manufactured at a relatively low cost but is capable of performing all classes of work that are performed .on the standard sized machines.

Various detail changes may be madewithout in any way departing from the spirit of the invention, which is to be regarded as limited only by the scope of the appended claims. i a

\Ve claim as our invention: a

1. In a typewriting machine, line lock mechanism comprising a center stop pivoted to the frame of the machine, a line lock member pivoted to the center stop to lie on the front side thereof and in substantially a parallel plane for its entire length, the upper end of said line lock member also having an offset portion overlying the edge of the 7 center st a margin stop havingv a projection to-contact with the offset portion and swing the line lock member so that its lower end overlies a portion of the universal bar frame and prevents further printing.

2. In a typewriting machine, line lock mechanism comprising a center stop pivoted to the frame of the machine, a line lock member pivoted to the center stop to lie on the front side thereof andin substantially a parallel plane for its entire length and extending downwardly below its pivot much farther than it extends above thesame,the upper end of said line lock member-also having an olfset portion overlying the edge of the center stop, a margin stop having a projection to contact with the offset portion and swing'the line lock member to locking position, and a key in the keyboard to swing the center sto and line lock member to inoperative posltion to permit further print- 111".

I}. In a typewriting machine, a universal bar frame, a center stop, a bracket to which said center stop is pivoted, an adjustable.

stop member for limiting the movement of the universal bar frame in one direction, and common. means for attaching said bracket and stop member to the frame of the machinel 4C. In a typewriting machine, a universal bar frame, a center stop, a bracket to which said center stop is pivoted, a second bracket, a stop screw carried by said second bracket for limiting the movement of the universal bar frame in one direction, and common means for attachin the two brackets'to the frame of the machine.

5. In margin stop-and line locking mechanism for typewriting machines, a margin stop comprisin a stop block adapted to slide on a stop ar, a latch plate overlying subscribed our names.

the top of said stop block and having at one end depending ears pivoted to the block by a pivot member which passes underneath the stop bar and forms means for retaining the block in position, said latch plate having at its other end a portion enga ing teeth on the stop bar and intermediate its ends a plate lying on said latch plate and carrying an indicating line.

6. In margin stop and line locking mechanism for typewriting machines, a margin stop comprising a 'stop block adapted to slide on a sto bar, a latch plate overlying the top of said to at' one end and having' means to engage the stop bar to hold the block in adjusted position, and an indicating plate lying flat on the top of the latch member.

7. In margin stop and line locking mechani'sm for typewriting machines, a margin stop comprising a 'stop block adapted to slide on a stop bar, a latch plate overlying the top of said stop block and pivoted thereto at one end apd having means -,to engage the stop bar to hold the block in adjusted position, and an indicating plate lying flat on the top of the latch member, said indi cating plate being adjust-ably retained by means of a screw at one end and .having egrs near the other end engaging the latch p ate.

8. Ina typewriting machine, bell ringing mechanism comprising a supporting bracket, a bell striker pivoted thereto, a spring normally urging the upper end of the bell striker in one direction, a stop for limiting this movement, the spring engaging the strlker between tlzte pivot thereof and the stop and the pivot {passing through an elongated hole in the striker whereby the lower end of the striker may move under its mo- -mentum into contact with the hell.

slot permitting the bell-striker when released by the margin stop to passthrough its normal position into momentary contact with the bell.

In testimony whereof, we have hereunto EDWARD B. HESS. LEWIS o. MYERS.-

stop block and pivoted there-

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