US1136949A - Line-end indicator and lock for type-writers. - Google Patents

Description

J. R. FREE.

LINE END INDICATOR AND LOOK FOR TYPE WRITERS.

APPLICATION FILED MAY 3. 1913.

L13fi,9% I I Patented Apr. 27, 1915.

ms WW WITNESSES [NVEN TOR.

A TTORNE IC- JOHN R. FREE, OF SALT LAKE CITY, UTAH.

Specification of Letters Patent.

Patented Apr. 27, 1915.

Application filed May 3, 1913. Serial No. 765,388.

To all 112/1 0m it may (owe/'11.

Be it known that I, Jonx R. Flues, a citizen of Canada, residing at Salt Lake City, in the county of Salt Lake and State of Utah, have invented certain new and useful Improvements in Line-End Indicators and Looks for Type-writers, of which the following is a specification.

My invention relates to typewriters and has for itsobject to provide a line-end 1ndicator and lock for typewriters which will indicate by tension on the space key the end of the line, and a lock for the writing mechanism when the end of the line and word is reached.

The invention consists of the novel construction and coml-.-ination of parts shown in the drawings in which similar letters .of reference indicate like parts throughout the several figures and as described in the specification forming a part of'this application and pointed out in the appended claims.

Taking as one factor of the illustratioma Number 10 Remington typewriter and referring to the drawings, Figure l is a fragmentary view showing a vertical section parallel with the keys and adjacent the space key. Fig. 2 is an. end elevation of a portion of the letter key lever adjacent to the space key lever. Fig. 3 is a fragmentary view showing a vertical section on line a: w of Fig. 1. Fig. L is a vertical section of the lock bar and moving lever, on line 11 y of Fig. 3. Fig. 5 is a rear elevation of the lever and pivotal connections of one end of the look bar. Fig. 6 is a side elevation of the release key and lock therefor. Fig. 7

is a side and front elevation of'the release key look. I D

As at present used, a lock bar 18 provided to lock the writing mechanism, which operates at a predetermined place in the line,

regardless of where it may happen to be in the word. In my device the space key lever 1, has an upwardly extended lug 2 with a notch 30 cut from the front edge thereof, the lower side of said notch being at an incline. This upward extended lug 2 has previously been given the shape of the lug 3 shown in Fig. 2 on the letter key lever 4, and when the locking mechanism of the ordinary typewriter was moved, the lock vertical position.

bar engaged the lugs on all the keys alike. A central portion 5 of the lock bar is formed in channel shape as shown in Fig. i and a lower side 6 is provided thereon to engage said lugs 2 and i The lock bar is pivoted to the frame of the machine bythe rivets 7, and is held in a vertical position by the vertical rod.8. \V hen the said rod 8 is depressed or falls, the locking bar drops down and forward of its own weight, turning on said pivots 7.

This movement of the lock bar brings its lower side 6 to bear against the lugs of the space bar. When the space-key is depressed by the operator-at the end of the word the lower side 6 engages with the hooks of the space bar lugs mentioned, and prevents depression of the keys, and the line is complete. The rod 8 in its raised position, holds the lock bar up and away from engagement with the lugs of the space bars and hooks thereon, as long as the crank arm 21 (to be hereinafter described) is in a Said vertical rod has a short bend near the lower end thereof, as at 9, which bend is engaged by one end of the release-key lever 10. Said release-key is pivoted to the frame A of the typewriter as shown. in Fig. 6. A release-key catch 11 made of spring metal is secured to the said frame A contiguous said release-key lever 10. Said catch has a laterally extended lug 12 thereon which engages said release-key lever 10 when said lever is depressed to the extreme position by the operator. A finger piece 13 is integrally formed on said catch by which the catch may be disengaged from said lever 10. 'l he resiliency in the metal of which the catch is made, will allow the said lug 12 to engage over the upper side of said release-key lever whensaid key is depressed to the extreme position.

A marginal stop20 is adjustably secured on the carriage of the machine, one portion of which engages the crank arm 21 when the carriage of the machine is made to travel to the left by operation of the keys. The usual spring, whichis not shown, holds s id crank arm 21 normally in a vertical position. A

bar 22 pivotall y connected with said crank arm and engages one arm of a bell crank lever 28, which lever is pivoted to the frame The operation of my device is as follows: The marginvstop may be set to engage the crank .arm 21 at any desired point in theline of writing, and when said stop 20 engages and slides over the said crank arm 21 the bar 22 will be moved longitudinally.

' Onepf the pivots of the bell-crank lever 23 is permitted a play in its engagement with the connected parts to allow this longitudinal movement of said bar 22, with the movement of the crank arm 21,'marginal stop 20 and carriage of the machine necessary. When the carriage is moved and, the mar- I, ginal stop overrides said crank arm 21 it is depressed and the vertical rod is lowered and permits the lock bar to fall into engagement as soon thereafter-as the space key is operated. The locking of the key levers is are" combined action of the marginal stop printing levers will not be locked, but will and the space key. This action of the lock bar will look all of the printing keys against further operation until released by the depression of the release key- 10 or return of the carriage. However, should the carriage be caused to move by use of other than the space key, thesaid lower side 6 of the lock bar-will engage-the portion of the lug 2 on the space key lever below the cut 30, and the be free to print the same as usual until the end of the "word is reached and the space key is depressed. The depression of the space key will cause the lower side 6 of the lock bar to lock the entire printing key system.

The longitudinal movement of the bar 22 will cause the free end of the spring 17 to enter the eye 24 on the upper end of the bar 15' and cause the space key lever to move against the tension of said spring in a sluggish or retarded way easily detected by the touch. of the operator; and the operator would notordinarily strike the keys after feeling such retarded or dampened action.

However, all the keys are locked against printing'should the operator disregard the notice :given through the increased tension of said space key. The object of this increased-tension upon the space key is to serve notice as far as possible upon the operator that the end of the line is reached;

indicate the' end' ofthe line in cases wherethe lock bar release key is permanently depressed. The operation of the spring 17 and vertical rod 15 may also be employed to ring a hell or operate a visible signal if desired. In this case the hell or signal would operate only at the end of the word after the normal end of the line is reached. If the operator should desire to insert another word after operation of the line lock, the lock bar may be released by pressing down on the release key lever 10 whichis made to engage a portion of said vertical rod 8 as at 9. Said lever 10 when depressed will not ordinarily engage the lug 12 of the release key catch 11, but may he made to do so by extreme depression, should the operator dcsire to insert several words or a spaced W0 in the right hand margin, thus avoiding the necessity of releasing the line lock after each depression of the space key. This engagement of said catch 11 may be released by moving said catch away from the lever 10 by means of the finger piece 13.

Having thus described my invention I desire to secure by Letters Patent and claim 1. In ,a typewriting machine the combination ofva marginal stop; a crank-arm movable thereby; a horizontally disposed bar pivoted on said crank-arm; a vertical rod a bell crank lever connectin said bar and rod; 21- space-key lever; a vertically extended lug on said space key lever having an open cut on its front edge; and a lock bar adapted to engage in said open --cut when moved into a contiguous position.

2. In a typewriting machine the combination of a carriage; a lock bar moved laterally by the travel of said carriage aftera predetermined point is reached; a space key lever having a portion thereof formed to hold said lock bar against said lateral movement and to allow said lateral movement when said space key lever is operated.

3. A typewriting machine consisting of a carriage; a lock bar adapted to be moved by the travel of said carriage after a predetermined point is reached; a space key lever having a lug thereon adapted to prevent said movement of said lock bar when in nor mal position and to allow said movement when the space key is operated.

4. A typewriting machine consisting of a carriage; a lock bar adapted to be moved by the travel of said carriage after a predetermined point is reached; a space key lever having a member-attached thereto adapted to prevent said movement of said lock bar when said space key lever is in normal position and to allow said movement when the space key is operated.

5. In a typewriting machine the combination of a marginal stop; a crank arm movable thereby; a horizontally disposed bar pivoted to said crank arm; a bell crank l ver connected with said bar; a space key lever; a vertical rod connected with said space key mamcc m iever', MM a spring aciaptmi-fi resist the said lever when saidi crank arm is contacted aaciion cf said leverwhcn said crank is conby said marginal stop. l0 fiiaciefi by said marginal-stop. In testimony whereof I have affixed my 6. Inn' t ypcwriting machine the combinasignature in presence of two Witnesses.

g5 tic mdfic marginal stop; a, crank arm mov- JOHN R. FREE.

chic @hcreby; 3L space key lever; in ver tical Witnesses: red connccfiz ed with said. space key lever; and W. R. WILLIAMS,

a? spring adapted $0 retard thc action of SAM RANEY.

Images