US1416031A - Typewriting machine - Google Patents

Description

. A. E. HOWELL.

TYPEWRITING MACHINE.

APPLICATION FILED AUG-7,1919.

Patented May 16, 1922.

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anarnnnn. HownL on BRQQKLYN, NEW Yong, ASSIGNOB To; UNDERWOOD TYPE- wnrrnn COMPANY, or new-roan, N. Y,, aconronar on on DELAWARE.

rtWt rni tea maiche Specification of Letters Patent.

Application filed aug st 7, 1919. Serial n 315,312.

o e l who m y c ce n Be it known that I, ARTHUR E Hownnn, a

citizen of the, United States, residing in Brooklyn Borough, in the County of Kings,

city and State of New York, have invented, certain new and useful Improvements in Typewriting Machines, of which the followingisa specification, I

This invention relates to typewriting machines, and is herein disclosed as applied to an Underwood typewriting. machine. In typewriting' machines having a revoluble plate'mthe writing of labels or similarsmall work sheets is often a matter of considerable annoyance,"espefcially if the machine is intended to be used ordinarily for other work, inasmuch as the adjusting of a small worksheet is diflicult, and any devicesused for holding it are likely to be in the way when the machine is used for ordinary writing.

According to the present invention, the platen may be provided with a holding-clip which is adapted to lieupon the edge of 'a small worksheet] and hold the work-sheet against the platen. The clip is hereinshown as lying just at or beyond the extreme end ofthe writing line upona work-sheet passed around the platen. This keeps the clip so far out of the way, that it in no way inter feres with the writing on the largest worksheet which can be accommodated in the typewriter carriage. The clip is herein shown as pivoted upon a plate let into the surface of the platen and supported by a single screw passing through an apron extending from the plate and lying against the end of the platen. This plate may form a device for holding in position a spring whichis adapted to normally 'hold' the clip clear of the platen surhe yp writ St cture-z Figure 2 is asectional side view of the platen a n ont e brok n of F igure Fi ure 3 a f o t ew 'th nd f s platen, mainly in section, to show the rela tionship ofthe parts, i v '4 7 to ustrate he la io shi f e d ri to Figure 4 s a spread perspective of the clip andthe' means for mounting it and control ling *l lgure 5 1s a view similar to Figure i lout showing the parts assembled.

showing the mounting of the clip.

Figure 7 is a perspective view of the plate on which the clipis'mounted. lnthe Underwood typewriting machine, a carriage 10 travels upon rails which in;

,Figure 6 is'a plan view of the platen,

elude a front rail 11, being fed along a step at a time by means ofauniversal bar, (not shown), every time a type bar l2approaches the platen 13 to cause its type l'to print against the face of the platen, the carriage,

for this purpose, being constantly under the tension ofa spring-barrel, (not shown). As the carriage travelsalong, 1ts pointer 15 1ndicates upon the scale 16, theletter-space at whichthe type la will print. In order to limit the travel of the carriage, there are provided margin-stops including a right hand margin-stop 1 7, whichis provided with a pointer 18 to indicate upon the scale-plate 16, the letter-space at which the carriage stands. The margin-stop 17 arrests the carriage when returnedto the beginning of a new line, because the usual lug 19. upon the carriage strikes the usual lug, (notsho vn), upon the margin-stopili' The usual construction is suchthat the margin stop 17 cannot beset to the right beyond the zero position, so that the zero point marks the final fixed limit of travel of the carriage 10 andplaten l3. 'VVhen the margin-Step1? is setat the zero position of the scale,the care riage isarrestedat return in such a posi tion that the type 14 will print just to the right of the edge of a thinextension or lip I QQ'of a clip 21 which is mounted upon the Patented May 16,1922.

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letter'spaces to the left of the position occupied by the lip 20, and according to the present invention this space may be occupied by the clip 21 and its mounting which lies beneath it. Normally, the end of the clip 21 having the spring 22, (Figure 3) which underlies it and is seated in a bore 23 in the wooden body 24: of the platen. The clip is supported by a plate 25 which overlies the fiat bed 26, cut into the wooden body 2a and which has dependent ears 27 extending into wells 28 out below the bed 26 and at the margin thereof.

The plate 25 is provided with an opening 29 through which the spring 22 passes and which serves to hold the spring in position. The clip straddles the plate 25 and its ears 27, and is provided with dependent ears 30 which are adapted to fit rather closely upon the outside of the ears 27 and to be pivotally attached thereto by means of pintles or'r'ods 31. The spring 22 normally swings the lip 20 upwardly and rocks the opposite end 32 of the clip 21 downwardly.

In order to enable the lip' 20 to overlie. and grip the edge of a small work-sheet 33, such as a label, the clip is adapted to be rocked on its pintles 31 against the tension of the spring 22. For this purpose, there is rovided a cam-plate 3a journaled upon the axle 35 of the hub 36 of the platen, comprising a cam elevation 37 which, when rocked from the Figure 1 position to cam upwardly the end 32 will cause the lip 20 to swing down to seize the worksheet 33 against the rubber surface of the platen. In addition to'the elevation 37, there is a depression 38 upon the plate 3% which may be brought opposite the end 32 and which is too short to strike the end 32, with the result that the lip 20 then occupies the Figures 1 and 5 position, being raised thereto by the spring 22. To enable the cam-plate 3 1 to be easily rocked to bring either the elevation 37 or i the depression 38 to the end 32, it is provided with a pair of knurled finger-pieces 39 formed as turned-over ends of the plate 34: and extending away from the face of the platen. These turned-over ends project slightly from the cam-plate 34:, and, since the end 32 lies between them, said end limits the rotation of the plate 34: to the space between the two finger-pieces 39. To enable v the cam 37, 38, to be short, the end 32 may be in the form of a tongue or reduced extension of the clip. In order to hold the plate or mounting 25 firmly in position, the plate 25 is provided with an extension or apron 40 adapted to overlie the end of the platen and to be held in position by a screw 41 having a shoulder 42 adapted to bear against the apron 40 around the margins of the opening 13 through which the screw passes and is threaded into the usual dished extension of the platen hub 36. The screw lip 20 is pressed outwardly by a der 12 isadvantageously just the thickness of the cam-plate 34:.

It will be observed that the clip 21 may be practically a continuation of the rubber surface 15 of the platen, and, in order to make the fitting of the clip 21 simple, the

edges of the rubber surface 45 may be cut radially, as shown in Figure 2, and the clip may have its side surfaces 16 cut to substantially fit the radially cut rubber surface. The thickness of the clip 21 and the distance by which it lies beyond the circumference of the platen are herein shown as considerably magnified in order to facilitate the illustration of the structure. For the same reason, the height of the elevation is considerably exaggerated. It will be observed that the label or work-sheet 33 is grasped only by its extreme left-hand margin and that it can be written on except for a distance equal to about a letter-space at said margin Where the lip 20 overlies it. The clip which holds the label will not interfere with the feed-rolls or other rolls, nor will it prevent a worksheet from lying substantially flat around the platen and so will not handicap the typist in using the machine for any ordinary work.

As hereinbefore noted and as shown in Figure 1, the sheet-holding clip 21 is positioned at the left end of the platen 13 beyond the printing field thereon of the type 14,-, as this field is determined by the final limit of travel of the platen 13 toward the right permitted by the margin-stop 17 at its extreme right or zero position. It is therefore impossible, under any circumstances, for the type 14 to strike the sheet-gripping lip 20 of the clip 21.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim:

1. In a typewriting machine, the combination with a traveling carriage and a revoluble platen therein, of a clip extending from one end of the platen toward the middle thereof, a pivot within the platen about which the clip swings to and from the platen surface, an axle for the platen, and a cam journalled on the axle and lying against the end of the platen adapted to be rotated to. control the clip.

2. In a typewriting machine, the combination with a traveling carriage and a revoluble platen therein, of a clip comprising a thin extension overlying part of the circumference of the platen, means for supporting said clip so that it lies almost flush with the surface of the platen, just at the limit of printing upon the platen, an axle for the platen, and a cam journalled on the axle adapted to be rotated to effect movement of the clip against the surface of the platen to hold a worksheet upon the platen.

The combination with a round platen, of a clip adapted to overlie part of its surface, ears upon said clip, a plate adapted to lie in a depression of the platen, ears upon the plate, means for pivoting the clip upon the plate by the two sets of'ears, and a fin ger-piece for swinging the clip against the platen by rotating 1t upon its ears.

4. The combination with a round platen, of a clip adapted to overlie part of its surface, ears upon said clip, a plate adapted to lie in a depression of the platen, ears upon the plate, means for pivoting the clip upon the plate by the two sets of ears, an axle for the platen, and a plate journalled upon the axle comprising a cam to engage the clip to swing it against the platen.

5. The combination with a round platen,

I of a clip adapted to overlie part of its surface, ears upon said clip, a plate adapted to lie in a depression of the platen, ears upon the plate, means for pivoting the clip upon the plate by the two sets ot ears, an apron "fast to said plate and overlapping the end of the platen, a screw threaded into the platen through said apron to hold the plate in position, an axle for the platen, and a cam plate journalled upon the axle and held in position by the screw and adapted to be rotated to bring the clip down upon the platen.

6. The combination with a round platen, of a clip adapted to overlie part of its surface, ears upon said clip, a plate adapted to lie in a depression of the platen, ears upon the plate, means for pivoting the clip upon the plate by the two sets of ears, a spring held in position by the plate and normally V holding the clip clear of the platen, an extension of said plate lying upon the end of the platen, a'screw threaded into the platen through said extension, a cam plate sliding upon a shoulder of the screw and adapted to swing the clip against the pressure of the spring, and an axle for the platen guiding the cam plate.

7. The combination with a round platen and a shaft upon which said platen rotates, of a clip adapted to overlie part of the surface of the platen, means within said platen 8. The combination with a round platen.

and a shaft upon which said platen rotates, ot' a clip adapted to overlie part of the-surface of the platen, means within said platen for pivoting the clip about an axis transverse to the longitudinal axis of the platen, said clip having a tongue projecting over the end of said platen, a cam member mounted for rotation upon said shaft and provided with a slot, and a screw projecting into the end of said platen through said slot, and having a shoulder co-operating with said slot, thexcam being adapted to engage said tongue for rocking said clip to hold or release a work-sheet on the platen.

9. The combination with a round platen,

of a clip adapted to overlie part of its surface, means for mounting said clip below the surface of said platen for pivotal movement about an axis transverse to the longitudinal axis of the platen, means for oscillating one end of said clip to raise or lower the other end, and means opposing the downward movement of said other end of said clip ARTHUR E.-HOWELI. Witnesses:

CATHERINE A. NEWELL, MARGARET Gr. NOONAN.

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