US1352976A - Electric retouching-pencil - Google Patents

Description

J. R. AND E. W. KUGLER.

ELECTRIC RETOUCHING PENCI APPLICATION FILED nmzs, 1917.

1,352,976, I PatentedSept. 14,1920.

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JmeLs/Z ZenQIMWffzglar UNITED STATES PATENT OFFICE.

JAMES 'R. KUGLER AND EARL W. KUGLER, OF CLEAR LAKE, IOWA, ASSIGNORS TO PETER HAUENS'IEIN, OF MINNEAPOLIS, MINNESOTA,

HOLZ, OF ST. PAUL, MINNESOTA.

AND CHARLES C. KASTEN- ELECTRIC RETOUCHING-PENCIL.

To all whom it may concern:

Be it known that we, James R. KUeLnR and EARL W; KUeLnn, citizens of the United States, residing at Clear Lake, in the county of Cerro Gordo and State of Iowa have invented a new and useful Improvementin Electric Retouching-l 'encils of which the following'is a specification.

This invention relates to improvements in retouching pencils, the primary object being to provide a simple pencil for the rapid and ei'ficient retouching of photograph negatives, photographs and'other. purposes. Retouching pencils heretofore used have been bulky and unevenly balanced. Our invention overcomes this objection by simplificationv of construction and. the arrangement of parts wherein the retouching point vibrates laterally and is resiliently mounted, so that the pencil can be poised. in the handof the user to apply the pointaccurately and more skill.- fully to the negative or photograph than heretofore. The weight of our improved structure is also less and the structure is entirely inclosed within a substantially smooth barrel of small'diameter and regular form,.which is an advantage. The parts of our invention are also so constructed as to reduce wear and prolong the life of the pencil.

lVith these and other objects and advantages in view, our invention comprises the features of construction and combination of parts hereinafter more particularly described and claimed.

In the accompanying drawing forming part of this specification, Figure 1 isa side elevation of our invention; Fig. 2 is a longitudinal section; Fig. 3 is a section taken on the line XX of Fig. 2, and'Fig. 4 is a side elevation of a detail showing the magnetizing coil and-the spring which it carries re moved from the barrel. r

' I In the drawing A indicates a cylindrical barrel made of thin metalor other suitable material of even diameter throughout itsen Specification of Letters Patent. Patented Sept. 14, 1920. Application filed December 26, 1917. Serial 208,790.

, end 4: of the casing. The inner end of the core 5 has a flat pole piece 11 extending into the pencil barrel.

Arranged longitudinally in the barrel is a lead holding tube B having a split outer end portion 12 around which the tip 13 is placed having a contracted end 14, which is adapted to clasp the split end 12 of the tube around the stick of lead 15 to hold the same with its point in selected position outwardly. The inner end of the tip is threaded at 16. on the tube and the portion of the lead holding tube adjacent to the threaded end of the pencil tip 13 is fastened'by. soldering or any other suitable means to one end of a coil spring 17, which surrounds the lead holding tube freely. The opposite end of the coil spring 17 is soldered or secured by any other suitable means to the outer extremity of the reduced end 3 of the barrel tip 2. Thus a resilient hinge oint is produced between the outer extremity of the barrel tip and the lead holding tube which allows said tube to swing laterally on they resilient support 17 as a fulcrum between its ends. Secured by threaded connection 18 upon the reduced extremity 3 of the barrel tip is a protecting cylindrical cap piece 19 which has larger internal diameter than the outer diameter of the tip 1-3 so that said tip may vibrate freely laterally therein. The opposite extremity of the lead holding tube B is provided with an armature 20 made of soft iron or other suitable magnetic material, which overlies the inner end 11 ofthe electromagnet core 5, so as to be attracted by the core when the latter is magnetized by'energizing the coil 6. Secured to the side of the pole piece 11 of the electromagnet is a long thin spring 21 made of brass or other suitable material, which has an end 22 pressing laterally against the pencil barrel to urge the latter away from the pole piece 11 of the electromagnet, but permitting the electromagnet when energized tomove the pencil barrel against the tension of said spring. Thus a lateral vibrating motion is imparted to the lead or other retouchlng pointby'the lateral reclprocatioriof the lead holding tube through the-energizing and deenergizing of the electromagnet. T he length of these vibrations is regulated by a thumb screw threaded in a lug 2d mounted on the side of the 'bar-' rel pieced. The shank 25 of this screw ro jects freely through anopening -QG in'the barrel A.,thus locking the barrel endt on the 3 main portion of the barrel and serving to define the'length of lateral vibratory movemcnt of-the' marking; point. A coil spring 127 placed a r ounjd't he shank 2:5 of said screw nected witlia suitabl source of electriccur below its head and against the lug 2ltendsf 'to prevent, the screw from turning and loosening unintentionally. .i

In use the bindingposts 'Zand 8 are con rent,wwhich is adapted to, energize and deenergize the electromagnet. These magnetic impulses cause thetube B to vibrate laterally on its fulcrum .17, thus impartinga se-- ries of rapid lateral vibrations to the mark mg point 15 of the pencil. These vibrations are most eiiective for retouching negatives,-

photographs and other work of a similar 1 nature;

r 1 tube B is hinged is subject, togvery little wear-and the resulting structure produces,

; of the retoucher. adjusting the screw 23,

"The retouching Jpencil described is very implel n construction and compact in form it being 'mostsu tably shaped vfor efficient use. The resilient fulcrum .upon which the an evenly. balanced instrument in the hand the length of vibrations of the marking point "canibefeasily and'quickly adjusted,

arts.

from a short to a long stroke or vice versa.

The vibrations are also confined tothe struc turein the barrel andthe end portion of the: barrel and thus do not vibratetli'e hand hold ing the device which is obviously a very ma-* terial advantage, The invention is equally applicable for use with direct current by mod fying ts construction in amanne'r fam liar to those who are skilled in electrical :In accordance with therpatentlstatutes, we have described the principlesof operation of our invention, together with the apparatus whichwe now consider to represent I; the.;best embodiment thereof, but we desire 1 to have it understood that the construction forth within the scope .otlthe following? shownis only,- illustrative, andthat the in 'vention can'be carried out by other means" and japplied-fto uses other thangtho'se set -laterally on its movable'supp'o'rt, r

described our invention, what we 7 and desire toprotect by Letters vPatent 1s:

fulcrum between its end near an end of 2. A photographic retoucher, comprising, in combinat1on,a pencil barrel, an electromagnet'carried by one end of said barrel har'mga 0011 by which the magnet is energized, a lead holding tube hinged on a resilient fulcrumbetween its ends in an end portion of the barrel having an armature on its inner end arranged to be attracted laterally by said electromagnet when the latter is'energized to transmit lateral vibrations to the: marking point of the lead, and resilient means for urgin said tube away from said electromagnet w en the latter demagnetized. i

in combination, a (pencil barrel, an 7 electromagnetcarried by one end of saidzbarrel having a coil by which the magnet" is energized, a leadfholding tube hingedon a resilient fulcrum between its ends in an end portion, of the barrel havingan armature on:

3. A photographic; retoucher, comprising,

said barrel to permit tilting of the tubeon the barrel and meansiorvibrating saidtube its. inner end arranged to be attracted later ally by said electromagnet when the latter isenergized to transmit lateral-vibrations to the marking point of the lead,r resilient means for urging said tube away irom said electromagnet whenthe latter is demagnetized, and; means projecting ,through the side'of saidbarrel and in the pathiof movement of theinner end ofsaid tube for regulating the length of. the lateral vibrations of the point of the lead,

4. A photographic retoucher, comprising, 1n combmat1on, a pencilbarrel, anelectromagnet carried byone end of said-barrel 7 having a: coil by which the magnet is energized, a lead holding tube placed longitudinally msaid barrel having an armature on its inner end arranged to be attracted laterally by' said magnet when the latter is energized and having its opposite end project ing from the barrel to expose the marking pointof theilead, arcoil spring secured by one end to saidtube and by its other end to thejbarrel to produce a resilient hinge connection between said tube and barrel, and

- a spring carriedby said armature and pressing againstjthe side of the-tube to urge the tube; away from the electromagnet when the latter is demagnetized;

5 A photographic retoucher, comprising,

in combination, a pencil barrel, an electro;

magnet carried by one end of said barrel ha'vin'ma coil b which the ma net is ener- V I D D gized, a' lead holding tube placedlongitudh nally in said barrel'having an armature onits inner end arranged to be attracted laterally by said magnet when the latter: is ener-- V J gized and havingits opposite endprojecting fromrthe barrel to expose the marking point of the lead, a coil spring secured by one end side of said barrel and in the path of movement of the inner end of said tube for regulating the length of the lateral vibrations of 10 the point of the lead.

In testimony whereof, We have signed our names to this specification.

JAMES R. KUGLER. EARL W. KUGLER.

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