US1559486A - Paper guide for typewriters - Google Patents

Description

Oct. 27, 1925 1,559,486

H. E. WEST PAPER GUIDE FOR TYPEWRITERS Filed .m 28. 1923 Wm 121E. Wart Patented Oct. 27, 1925.

UNITED STATES HAZAEL E. WEST, or WASHINGTON, nrs'rnroror COLUMBIA.

PAPER Gum-E FOR TYPEW'RITERS;

T 0 all whom it may concern:

Be it knownthat I, HAZAEL E. VVEsT, a citizen'of the United States, residing. at Washington, in the District of Columbia, have invented, certaininew and useful ImprovementsiniPaper Guides for Typewriters; and I do hereby declare the following to be a full, clear, andexact description of the'invention, such as will enable others skilled in the art to which it 'appertains to make and use the same.

The present invention relates to improvements in paper guides'for typewriters and has for an object to insure the proper feeding and the proper contact of the paper upon the platen. I i

In present models of certain standard typing machines, the design and construction ofthe overhead feed rolls (where such exist) are notsuch as to properly and effectively fulfill the purpose for which they were-intended. 'Withthe present construction it is practically impossible to write-to the bottom of the sheetwithout one or bothsides of the sheet creeping up in thecourse of-wa line, thus making the line spacing irregularand unsightly and eliminating twoto four lines of writing'spaceat. the bottom of thepage. It is another objectof the invention to eliminate'the present difficulties by the application ofdirect yieldable pressure tothe over. head. feed rolls whereby the sheet or sheets, may be held in substantially perfect contact with the-platen until the entiresheet has been typed down to the very bottom to the endthat every line may be evenly and perfectly spaced.

With the over head feed rolls at present used on the Underwood and similar typewritersyavery smallamount of pressure is developed upon thesheet of paper on the platen, the pressure being usually'insuflicient even tov hold the rolls in contact .Withthe platen actually leaving a space equal, to several thicknesses of paper between the roll and platen; V

The rolls are therefore ineffective for the purpose for; which they are intended and imperfections inthetype alinement and the line spacing result.

A further object of the invention resides in providing relatively inexpensive devices the. ture of attachments whicham s designedand constructed as to be capable of substituti n. for the p esen fo s o O Application filed-July 28, 1923. Serial No. 4A48.

head feed-rolls taking advantage, of the same mounting as now employed but having the further, construction and advantagelof, ylelclable d1rect pressure whereby the feed rolls will at allltimes remain firm Y contact" with the platen or with the paperthereonn With theffo'regoing and other objects in View the invention consists the constructlon, combinations and arrangement of parts hereinafter described and more-particularly pointed out inthe appended claims. j

In the drawings whereinlike symbols refer to like or, corresponding parts through out the several views.v I i Figure 1 is atop plan view showing portion-s of a typewriter carriage and platen Figure 5 is a fragmentarylside view show- 7 ing amodifiedform of fastening, and

t Figure 6 is a transverse sectiontaken on the line 6-6 in Figure 5; w V

Referring more particularly to. the. drawings 7 designates generally the typewriter carriage frame and 8.,the platen, mounted here 1- 4. .e -V 1 .5

In accordance with. the. present construction the carriage frame. supports ,a trans verse ba r 9 rearwardly of the. platen 8 and same, eig t as th p riph y 'Q p i This barv in the present Underwood" construction forms a support ,for the arms which carrythe guide fingers bearing'upon' the, Pap ra d n e dedtoi fld a ai th p aten-. r V the. p esent onst uct on fu rmo slightly above the same or at about the light springs are as ciat d it l h cl'o g and with. t e. rm and these, igh prin are vdepended upon entirelytoproduce the necessary- Press'u e bta n ng,1 twe. n I

efi ge -and th P p r 1190a ePht This has-be n, found .in fleetiv in prac q andthe. guide ngers Qn n actual pr Y tiee pos s any Pos t ve tension wha soev articular yhaf erk the typewriter h s bee in us f r a. shortp 'r d i AS eeem Upon these old parts are imposed the fur-.

ther construction forming the invention. In

accordance with the invention a bar 11 is extended transversely across the carriage in substantial parallelism with the rearrod 9, such bar 11 being carried by and afiixed to the inturned end portions 12 of the arms 10. The ends of the bar 11 carry forwardly and downwardly curved pressure fingers 13. The outer free ends of these pressure fingers are engaged by the upper ends of coil springs 14: which hear at their lower ends upon the end portions of a rod 15 extending across normally in front of the platen. The lower ends of the springs may be wound about the rod 15 or otherwise secured thereto and the'rod is carried in arms 16 which extend forwardly from the first mentioned arms 10 and are pivoted thereto as indicated at 17.

Now the front rod 15 supports the guide fingers 18 and these guide fingers may be of substantiallynthe general shape given the present form of guide fingers and in addition to the usual guide or pressure rolls 19 carried by such fingers 18, I further provide smaller rolls 2O journalled in the upper and rear portions of the guide fingers and adapted to also bear upon the surface of the platen or the sheets of paper thereon. This rear roll 20 subjects the lower front portion of the guide fingers to a substantial pressure at all times and prevents the paper further prying the guide fingers away from the platen so much so as to cause a permanent gap to be created between these two parts. Ifthis front lower portion of the guidefingers were allowed to unduly spread outwardly and forwardly away from the platen it would catch upon other portions of the apparatus during the traverse of the carriage and will interfere with this carriage movement.

The front rod 15 is providedwith a longitudinal peripheral groove 21 adapted to receive a tongue 22 upon each guide finger whereby to avoid any relative turning movement of the guide finger upon the rod, particularlywhen the rod and connected parts are raised to they dotted line position'indicated in Figure 3. If the guide fingers were allowed to swing on the rod when lifted,

they would require manual adjustmentbefore being lowered and this would be tedious work for the operatorand furthermore consume valuable time. The tongue 22 or other the front rod 15 and through this construction the same relative spacingbetween the two guide fingers is secured; according to. the width. of the sheet to be typed.

.N ow the construction heretofore described will be found adapted for factory replacement but the rear arms 10 as now manufactured are not perforated so as to readily receive the pivots 17.. Consequently in making substitutions in machines already on the market, it would become necessary to perforate the arms 10 to receive the pivots 17. In order to dispense with the necessity for so perforating the arms and to avoid the work incident thereto, I provide the deviceshown in Figures 5 and 6 which consists of a clip bent substantially U-shaped as indicated in Figure 6 and having a screw 24 passing through the leg thereof which lies against the outside face of the forward arm 16.

This screw 24 passes through a perforation in the arm 16 and bears against the imperforate overlapped portion of the rear arm 10. The opposite leg of the clip engages upon the outer wall of the rear arm 10 so that the pressure developed by this last mentioned leg and the screw 24 is adequate to hold the arm 16 upon the arm 10. l

The clip 23 may be made of resilient metal or other appropriate material. It will be appreciated from theforegoing that the use of the springs l4l.in the position notcd will yield a direct and positive thrust upon the guide rollers 19 and that this pressure will at all times be'effective inasmuch as it is direct. The positive and direct pressure devolving onthe paper by reason of the arrangement of the guide fingers and the guide'rolls enables me to hold the paper firmly and faithfully upon the platen without likelihood of creeping particularly when the lower edge of the paper has passed from engagement with the lower feed rollers at which time it has a tendency to creep locally and particularly with reference to one side more than another in the existing typewriter construction. This has always made it difficult to preserve the alinement of the type and the proper spacing of the lines near the bottom is held against this creeping movement and the line spacing is preserved'down to the very bottom of the sheet. Moreover according to the invention both guide fingers are mounted uniformly upon the same bar so that both fingers may be lifted by one hand of the operator and both restored to normal 7 position in the same Way. The fingers will also occupy the same identical positions when restored due to the fact that they are prevented from turning upon the front rod 15. i

it s obvious. that various changes'and modifications'may be made in the details of construction and design of the above spe t cifi-ally described embodiment of this in vention Without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the fol-'- lowing claims.

That is claimed is 7 1. In a typewriter, a platen, a rod ex tending above and to the rear of the platen, arms pivotally mounted on said rod, a bar connecting said arms, other arms pivotally second rod for forcing, the rolls against the platen and paper thereon.

2. In a typewriteiya platen, arms pivotally supported above said platen, a rod carried by the arms, paper guide fingers sup-I ported tor sliding movement 1 on said rod and being prevented tromturning thereon, rolls in said guide fingers for hearing against the platenand paper thereon and for spacing the fingers slightly from said" platen orpape'r, and means for communieating yielding pressure to said rod substantially radially with respect to the platen whereby said rolls will receive a direct pres-f sure against the platen. Without permitting thefingers to be pressed against the platen. 3; In a typewriter, a rear rod, arms piv oted thereon, a bar connecting said arms, 7

other arms pivotally carried by the first mentioned arms, a second rod carried by' said other arms, paper guide fingers supported for sliding movement on said second rod and being prevented from turning thereon, pairs of rolls in said guide fingers, curved pressure fingers carried by. the first mentioned arms'and extending beyond said guide fingers, and resilient means disposed between said pressure fingers and the second rod. 7

HAZAEL E. WEST.

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