US1782792A - Rotary blotter - Google Patents

Description

Patented Nov. 25, 193() r4UNITEDl STATES t fno'rAiiY t Application filed .Tune 7, My invention relates to so called rotary blotters, namely blotting appliances in which the absorbent blotter is disposed as acylindrical surface and `adapted to be rolled" over `the .paper on` which the ink is to be blotted.

lVith such rotary blotters, the absorbed ink gradually spoils theeffectiveness of the outer blotting surface, so that provision `must be made for presenting freshjblotter parts, uni less the effective iise ofthe rotary blotter is to` be limited to so short aperiod oftime asV would be out of `proportion to the .cost of the blotting appliance.- For 'thispurpose, it has heretoforebeen customary to mount a series `ol concentrically curved blotters on a carrier roll, but the arrangements for rigidly secur t ing the consecutive blotters toeach other.` and tothe roll have been such as to produce nonabsorbent or rough `portionsl on the successively exposed'blotters, or havecaused parts Y of the exposed blotter to project radially beyond otherparts, or otherwise have involved a damaging of the freshlyexposed blotter.

Hao

:ofthese objections, and inits general aspects i includes these objects: j

\ which will permit each of a plurality of blotters to present a complete and substantially cylindrical blotting surface and which will `not impair the surface of adjacent blotters.

(l) Providing blotter` manipulating means which will require scarcely any space bey ndV that needed for the blotters and which will permit a convenient handling of the blotting appliance.. Y l.

(2) j Providing blotteresecuring `means (.3) Providing blotter-securing means so arranged that they can easily be ruptured by the insertion of any small pointed objects beposed blottingfsurfaces.

Y tion of Figs, showing the use of a pin point it 1,782,792 y 1LL1No1s,"AssIGiioR Torrita froYj'riNxnRs, j v

A conromi'rioiv or i'nmivors' morren 1929. lseriali No. 369,048.

s tweenthe` abutting ends of the blotter with which the securingmeans are associated. v `(4) Arranging the securing means forithe concentricblotters sothat they will not mate-lv i rially affect the cylindricalshape of thefex- N P ATENTQFFICE cHARLiisiir-iMILToN PAJEAU, or GLENooE, Y INC., oF Evaivs'roiv, iLLINQIs,

(5). Providing a simplefand-r-ineizpensive method of assembling the thussecured blot-` ters on a carrier roll. J

VProviding a novel-carrier iroll -`con` c structioniforirotary blotters. i

and from: the `accompanying drawings, in which bodying my invention.`

Fig. 2 is a plan view #of the same rotary .Still further and also more detailedects i l will appear from the following specificationI j ersl i Fig. lis an end view ofarotaryblotter envi-1 i blotter, with :dotted lines showing portions of a hand a'siit appears When4 manipulating the rotary blotter.

line- 3-3. of Fig.` 1.

Fig. 4 `is i an enlarged taken along the line 4l-4 ofFig. 2. i .i

Fig. 5 is a side elevation of the parts of the Y Fig. 3 is a central sectiontaken longitudi-` nally of the same rotaryfblotter, along the transverse section,

abutting end portions of one of the jblotter i tubes, with dotted lines showing the sealing strip whichiconnects these ends. f

Fig. `6 is an interior elevation of the same 1 blotter parts asFig. 5. i f f .1

Fig. 7 is an enlargementofithe upper por-` for rupturing oneofthe sealing strips. j y

Fig. 8v is a perspective View,` showing the inner tube with an adhesive strip laid on it,` and with a blotter sheetready to be `affixed to the adhesive strip. i. .i Y

In the illustrated embodiment, my rotary blotter includesjas its carrier member a cylindrical-tube l-(which may be of thick paper) clamped betweenv two metal end pieces` Each of these end pieceshas its inainand inner portion 3 oifset inwardly of the carrier through which a Vcentral `shaft2 extends. t j

member and connected to its fiat annular edge j portion l by a tubularportion 5 which fits tightlyinto the adjacent end of the tuberi, and each end `piecehas a central perforation j through which the shaft 2 projects. Fitted on each projecting end of the shaft 2 and coaxial with the shaft is a knob 6 which desirably has its outer end face concaved, so as to afford a good ingerliold.

Surrounding` the roll l are a plurality of blotter tubes, the inner of which (blotter 7) snugly houses the roll, while each of the other blot-ter tubes (8, 9, l0) snugly houses the blotter tube inside it. Each of these blotter tubes consists of a sheet of blotting paper corresponding in length to the circumference of the surface surrounded by it, this sheet being curved so that the ends of the sheet abut against each other.

To retain eachV blotter in such curved disposition, I dispose a strip 1l of thin paper between the end portions of the blotter and the surface around which the blotter is wrapped, and paste this strip tol the said end portions of the blotter; however, I leave the said strip unsecured to the surface around which the blotter is wrapped', as for example by employing a. paper strip whichis gummed only on its outer face.

To manufacture the rotary portions of my blotting appliances economically, I desirably start with stiff paper tubes and gummed paper strips many times as long as one of the proposed rolls, and with blotter sheets of corresponding width. Then I lay one guinmed paper strip ll on the tube l as shown in Fig. 7, with the guimned face of the strip upward and nioistened and with the strip extending longitudinally of the said tube. Next I wrap the inner blotter around the tube so that its end portions both overlap the gummed strip and abut against each other, and press these end portions tightly against the gummed strip. With the next blotter 8, I proceed in a similar manner, but start with a gummed strip 11A seated on the blotter previously clamped upon the tube, and preferably with this second strip 11A displaced rotationally of the roll by a considerable angle from the previously applied strip 11. By thus distributing the successive strips 1l rotationally of the tube l, and by preferably disposing these strips in uniformly spaced locations, and by also employing thin paper for the strips, I produce a long blotting roll assembly in. which the interposing of these strips does not materially alter the cylindrical exterior shape of the faces of the blotters.

This roll assembly is then cut to the desired lengths, to eacli of which the` two end caps, the shaft and the two manipulating knobs are attached as shown in Fig. 3. Then my appliance, as thus assembled, is to be used, the two knobs 6 are gripped by the user, desirablybetween the thumb l2 and the middle finger 13 of one hand, as shown in Fig. 2. The coiicaving of the outer knob ends not only makes this it the linger tips readily, but also insures a gripping of a considerable surface portion by each linger tip, thereby making it easy for the user to lift and to roll my rotary blotter while only lightly gripping these knobs. rIhus constructed, my assembled appliance requires hardly any more packing spaceV than the blotter roll alone, as I avoid the need of the heretofore employed forked handles, and my blotting appliance also occupies onlyV a small space in a desk drawer.

By forming each of the concentric tubular blotter members from a sheet of blotting paper corresponding in length to the circumference of the surface around which that sheet is wrapped, I permit the ends of the sheet to abut, so that the resulting tube presents no gap of suiiicient width to interfere with an effective blotting of inkv by the end portions of the blotting sheet. However, the ininut-e longitudinal gap atfthe outer surface of eachv blotter tube (between the ends of the blotter sheet from which that tube was formed) affords a guide for indicating the position of the retaining strip which is gumnied to the inner face of that sheet.

IVhen the outer blotter tube has served its purpose, the retaining strip associated with it can readily be cut or torn by inserting any thin and sharp object (such as the tip of a knife blade, pin or needle) in this gap, after the manner shown in Fig. 7, and moving this cutting or tearing tip for the entire. length of the gap (or effective slit) in the blotter tube. In practice, each paper retaining strip can be both thin and frail, so that it can be severed in this manner with so lightapressure as not to cause any material indenting of the blotter which is inward of the strip; and soon as the used blotter tube has thus been severed, it readily springspopen and slips ofi' the remainder of the blotting roll.

To insure a longitudinal centeriiior of the blotting roll on the cariier member, J.. desirably make each` of the metal end pieces of a diameter slightly greater than that of the carrier tube l, so that these ends will extend alongside the innermost blotter tube 7 for a part of the thickness of the latter. By assembling the gummed strips and the blotter sheets on the tubing as heretofore described,

I can readily draw the ends of each lotter sheet toward each other, so that the resulting' blotter tube tightly surrounds the next inward blotter tube and clamps a retaining strip between them, thereby insuring a rigid assembly.

For use in the average hand, I desirably provide my blotter tubes iii a length (or effective blotting width) not exceeding about two inches anddesirably have the knobs 6 project slightly longitudnally of my rotary blotter beyond the end pieces. I also desirabl)Y wedge these knobs on the shaft 2 and leave the shaft free to rotate in the said end pieces, so that the shaft and knobs remain as a rigid los unit during the rolling of the expos-ed blotting surface over a paper which is to be blotted.

However, I do not wish to be limited to these or other details ofthe construction and arrangement above disclosed, since many changes might be made without departing i. either from the spirit of my invention or from the appended claims.

. I claim as my invention:

al. A rotary blotter comprising a carrier having a cylindrical outer wall, a plurality of blotters successively wrapped around the said carrier Wall, each blotter presenting a cylindrical outer face andhaving its ends in abuttingrelation to each other, and retaining strips each extendng across the abutting end portions of one of the blottersinteriorly of that blotter and secured only to that `blotter.

2. rotary blotter comprising a carrier having a cylindrical outer surface, a rupturable strip of material bearing against the said outer surface but not secured to the carrier, `and a blotter curved around the body the said strip.

and having its end portions abutting against each other and secured to the outer face of f 3.` A `rotaryblotter comprising a carrier having a cylindrical outer surface, a plurality of blotters consecutively surrounding the said outer surface, eachblotter having its ends abutting, the juncture ofthe ends being out of alinement in consecutive blotters, and retaining strips each secured only to the inner faces of both end portions of one of the blotters.

4. In a-rotary blotter, a blotter-carrier member comprising a cylindrical tube of a length readily spanned by two fingers of a human hand, two centrally perforated end caps respectively tightly fitted into the ends of the tube, a shaft extending through the central perforations in the end caps and rotatable in the said caps, and knobs respec tively mounted on the ends of the shaft exteriorly of the end caps.

5. In a rotary blotter, a blotter-carrying member comprising a cylindrical tube; two centrally perforated end caps each including a tubular portion fitted into one end of the` tube and a rim portion engaging oneend of the tube, and a head extending across the ini ner end of the tube, a shaft extending through the central perforations in the end caps and rotatable'in the said caps; and knobs .respectively secured to the ends ofthe shaft exte- H riorly of the end caps, each knob bearing against the head of one cap, whereby the two knobs hold the shaft against `longitudinal sliding.

6. vrotary blotter comprising a substantially cylindrical carrier member, a paper strip bearing against the cylindrical surface of the carrier member and extending longii tudinally of the carrier member and having a nonfadhesive'innersurface,I and a blotterwrappedaround thecarrierimember and presenting abutting endnportion's overlapping and: being `pasted to the outer face ofthe `paper strip; a secondpaper strip bearing against the`A outer face of the blotterand spaced circumferentially ofthen carrier mein` ber from the abutting ends of the blotter and` a second blotterwrappedf around the first named blotter and havingiits end portionsl abutting eachother, the said endlportions ofl able strip of paper extending across and adhesively secured to the `inner faces of the abutting end portions of one of the blotters.

8. A rotary blotting appliance comprising a plurality of concentric and contiguous tubes; each tube consisting of a. flat blotter curved to present its tips in abutment, and a relatively thin strip of paper pasted to and overlapping the inner, faces of the Vends of the blotter. Y i i 9. A rotary blotting appliance comprising a plurality of concentric tubes of blotting Cav i paper consecutively and snugly housing one another, and a roller snugly housed by the innermost of the said tubes; each of the concentric tubes comprising a sheet` of `blotting paper curved to `present its tips in abutment and a strip of paper adhesively secured to the inner faces of both ends of the saidcurved sheet; each such strip being clamped, by the tube of which it forms a part, to the element i snugly housed'by that tube, but being' otherwise unsecured to such snugly housed ele-` ment.

ter-carrying member comprising a cylindrical tube, two centrally perforated end caps respectively fitted into the endsof the tube i i V Vl0. In a rotary blotting appliance, a blotand each presenting `its cap head longitudinally inward of the tube fromthe adjacent end of the tube; a shaft extending through the central perforations in the end caps and rotatable in the said caps; and knobs respectively mounted on the ends of the shaft exteriorly of and respectively adjacent to the end caps, each knob presenting its outer` end beyond the outer faces of the adjacent end cap the said knob ends being so spaced as to be grasped by the thumb and a Enger of one hand of the user, so that the said shaft and knobs will serve as the sole means for lifting and manipulating the appliance.

11. A rotary blotting appliance compris ing a plurality of concentric tubes of blotting paper consecutively and snugly housing one another; a roller snugly housed by the innermost of the said tubes, the roller including end portions projecting radially of the roller alongside the ends of the innermost tube for a distance less than the thickness of that tube; and knobs projecting axially of the roller beyond the ends of the said tubes, the knobs being rotatable With respect to the roller.. y

Signed at Evanston7 Illinois, May 29th, 1929.

CHARLES HAMILTON PAJEAU.

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