US2422174A - Photographic retouching device - Google Patents

Description

June 17, 1947. LE R ADAMS 2,422,174

PHOTOGRAPHI C RETOUCHING DEVI C E Filed March 25, 1946 2 Sheets-Sheet 1 rmumm un I .111 mnuumwa: mun mummil INVEN TOR. fiZW/Qy [L /Pay AL /4M5.

511m 1947 H. LE R. ADAMS 2,422,174

PHOTOGRAPHIC RETOUCHING DEVICE Filed March 25, 1946 2 Sheets-Sheet 2 il nm E illlllggllll ll IIllI- Z L INVENTOR. hA/ PRV Zf/PUY ADA/:45.

Patented June 17, 1947 PHOTGGRAPHIC RETOUCHIN G DEVICE Harry Le Roy Adams, Denver, (3010., assignor to Adams Retouching Machine Company, a corporation of Colorado Application March 25, 1946, Serial No. 656,938

8 Claims.

This invention relates to a device for use in retouching photographs. Photographic retouching is done by highly skilled operators who work over the blemish spots on a negative with a retouchin pencil. The Work consists of a plurality of microscopic, overlapping check marks or loops which must be so small and so uniform that they will not become apparent on an enlarged print from the negative.

The principal object of this invention is to provide means for automatically forming these small, microscopic check marks so that retouching will require less skill and less time.

Another object of the invention is to provide a device of this character which will produce retouching marks much more uniformly than can possibly be produced by hand; which can be adjusted to accommodate various types of Work and various densities of negative.

A still further object of the invention is to so construct the device that it will be substantially noiseless in operation.

Other objects and advantages reside in the detail construction of the invention, which is d signed for simplicity, economy, and eficiency. These will become more apparent from the following description.

In the following detailed description of the invention, reference is had to the accompanying drawing which forms a part hereof. Like numerals refer to like parts in all views of the drawing and throughout the description.

In the drawing:

Fig. 1 is a front View of a retouching cabinet in which the invention is embodied;

Fig. 2 is an end view thereof partially broken away;

Fig. 3 is an enlarged rear or interior view of the vibrating mechanism employed in the improved retouching device;

Fig. 4 is a cross-section therethrough, taken on the line 44, Fig. 3;

Fig. 5 is a side view of the vibrating mechanism, looking in the direction of the arrow 5, Fig. 4;

Fig. 6 is a similar side view, looking in the direction of the arrow 6, Fig. 5;

Fig. 7 is a cross-section, looking downwardly on the line l-'l, Fig. 6; and

Fig. 8 illustrates various markings produced by the device in a highly magnified condition.

The device consists of a vibrating mechanism for supporting a photograph negative over a light source. The mechanism may be supported in any desired manner or mounted in any suitable cabinet, table or enclosure. As illustrated in Figs. 1 and 2, the mechanism is mounted in a cabinet it having an inclined instrument panel H. The cabinet ill surrounds any suitable light source, such as a fluorescent lamp tube 12.

The instrument board may contain any suitable control instruments. As illustrated, it contains a lamp switch l3 for controlling the current supply to the lamp l2 and a lamp rheostat M for controlling the voltage of the lamp current. A vibrator switch [5, for controlling the current to a vibrating mechanism to be later described, and a vibrator rheostat I6 for controlling the voltage of the current supply to the vibrating mechanism.

As thus far described, the device may be arranged in any desired manner, since the various accoutrements form no part of the invention. The invention comprises a vibrating mechanism which, in the form shown, is mounted at the center of the instrument board H, the latter having a circular cut-out 46 for receiving the mechanism.

The vibrating mechanism comprises a face plate ll which is mounted on the face of the instrument panel I I. The plate I? has a central opening corresponding with the opening 46 in the instrument board. The plate il' may have any suitable design, and is preferably covered with felt or other protective substance, both for appearance and to prevent damage to the negative. The plate carries three rearwardly projecting equally spaced studs l8 which extend entirely through the instrument board I I and project from the back thereof. Each of these studs l8 supports at its inner extremity a leaf spring I9 positioned between a plurality of rubber washers 20.

The leaf springs l9 extend parallel to the back of the face plate I! and resiliently upport a ring plate 2| in spaced relation to the instrument board H. The attachment to the ring plate 2| is made at the extremity of each leaf spring by means of a spring bolt 22.

An annular back plate 23 is resiliently supported from the ring plate 2| by means of coil springs 24, there being three coil springs, each extending from one of the bolts 22 on the plate H to an attachment bolt 25 on the plate 23. Thus, it will be noted that the back plate 23 has a double resilient mounting; first, through the leaf springs l9; and second, through the coil springs 24.

The back plate 23 has an opening 26 at one side to allow space for the electrical vibrating mechanism. The latter is supported from angle brackets 21 secured to the plate 23 at each side of the opening 26. A spring blade 28 extends between the brackets 21 and is secured thereto,

between resilient washers 29, by means of attachment bolts 30.

The spring blade 28 supports, intermediate its extremities, an electro-magnet 3|. An L-shaped magnet frame 32 is mounted between the magnet and the spring blade 28 and extends upwardly through the opening in the face plate I! to support a circular negative plate 33, to which its extremity is attached by means of an attachment bolt 34. The opposite side of the negative plate 33 is resiliently supported by means of afourth coil spring 35 extendin from a spring bracket 36 on the back plate 23. The negative plate is supported above the face plate ll and concentrically of the latter.

The magnet frame 32 is extended rearwardly from the magnet 3| to form a vibrating arm 31. An L-shaped armature member 38 is secured to the vibrating arm 3'! by means of an attachment bolt 39, a resilient washer 48 being interposed therebetween. The armature member 38 extends alongside the magnet 31, thence turns across the pole piece thereof, terminating in a freely vibrating upper extremity. The vibrating extremity of the armature member 38 is provided with carefully selected counter-weights H, which may be a bolt with a suitable number of nuts tightened thereon.

It will be noted that the entire mechanism is open through the center to allow light from the light source l2 to pass completely therethrough and through the central opening in the negative plate 33.

A negative 42 may be clamped over the opening in the negative plate 33 by any suitable clamping means. As illustrated, the negative 5.2 is clamped beneath a clamping ring 44, The ring is provided with oppositely extending arms G3 which are secured to the extremities of bracket arms 45 extending outwardly from each of the bolts 34. Cushion members 4'! are interposed between the arms 43 and the arms 45. The arms are resilient and act to constantly urge the negative 42 against the negative plate 33 to secure the former in place.

In use, the electro-magnet 3i is supplied with alternating current from any suitable source. Thi current produces an intermittent attraction for the armature member 33, causing the latter to freely vibrate. Since the electro-magnet itself is also resiliently mounted on the spring plate 28, it vibrates in synchronism with and in opposite direction to the armature 38. The vibration of the electro-magnet 3] is carried through the magnet frame 32 to the negative plate 33 to vibrate the negative 42.

By careful balancing of the vibrating arm 31, the armature 38, and the counter weights 4!, the entire mechanism will vibrate in step with the alternating current but not necessarily in phase therewith. For instance, the elements 3?, 38 and d! can be so co-ordinated as to cause the armature to Vibrate at any desired multiple of 60 cycles when the electro-magnet is energized by a 6G- cycle alternating current. This produces a slower vibration of greater amplitude than a simple armature vibrating at the original GO-cycle rate.

The resulting vibration, combined with the multiple resilient mounting, results in swinging the negative plate in a slightly circular path with a slight simultaneous vertical vibration thereof. If a retouching pencil be drawn rapidly across the vibrating negative, a result as shown at A in Fig. 8 will be produced. It will be noted that the vertical vibration slightly accentuates one half of each since curve. A slower movement of the penoil will produce a result such as shown at B, and still slower movement, a result such as shown at C.

It will be noted that the width or magnitude of the vibration is the same in each case. The number of vibrations per inch, however, is increased by a slower movement of the pencil. Thus, a retoucher can obtain any desired screen in his retouching to match the particular negative being worked upon. The intensity or magnitude of the vibration can be controlled by means of the vibrator rheostat 16.

While a specific form of the improvement has been described and illustrated herein, it is desired to be understood that the same may be varied, within the scope of the appended claims, without departing from the spirit of the invention.

Having thus described the invention, what is claimed and desired secured by Letters Patent is:

l. A photographic negative retouching device comprising: a face plate; an annular plate resili ntly supported from the rear of said face plate; a back plate resiliently supported from the rear of said annular plate; a negative plate resiliently supported from said back plate and positioned forwardly of said face plate; and electro-magnetic means for vibrating said negative plate.

2. A photographic negative retouching device comprising: a face plate; an annular plate resiliently supported from the rear of said face plate; a back plate resiliently supported from the rear of said annular plate; a negative plate resiliently supported from said back plate and positioned forwardly of said face plate; bracket members extending forwardly from said back plate in spaced-apart relation; a leaf spring extending between said bracket members; an electro-magnetic vibrating means mounted on said spring; a magnet frame secured to said vibrating means; and means for securing said magnet frame to said negative plate.

3. A photographic negative retouching device comprising: a face plate; an annular plate resiliently supported from the rear of said face plate;

a back plate resiliently supported from the rear of said annular plate; a negative plate resiliently supported from said back plate and positioned forwardly of said face plate; bracket members extending forwardly from said back plate in spaced-apart relation; a leaf spring extending between said bracket members; a resilient arm extending from said negative plate and being secured to said leaf spring and terminating in a freely vibrating extremity; an electro-magnet secured to said arm and to said spring; and a resilient armature member secured to said arm and extending across said magnet in freely vibrating relation thereto.

4. A photographic negative retouching device comprising: a supporting panel; a face plate secured on the front of said supporting panel; spring supporting studs extending rearwardly from said panel; leaf springs extending from said studs; a negative plate resiliently supported from said springs forwardly of said face plate; and an electromagnetic means for vibrating said negative plate.

5. A photographic negative retouching device comprising: a supporting panel; a face plate secured on the front of said supporting panel; spring supporting studs extending rearwardly from said panel; leaf springs extending from said studs; a ring plate supported from said leaf springs rearwardly of said panel; a negative plate positioned forward of said panel and resiliently supported from said. ring plate; and an electro-magnetic means for vibrating said nega tive plate.

6. A photographic negative retouching device comprising: a supporting panel; a face plate secured on the front of said supporting panel; spring supporting studs extending rearwardly from said panel; leaf springs extending from said studs; a ring plate supported from said leaf springs rearwardly of said panel; an annular back plate; coiled springs supporting said back plate rearwardly of said ring plate; a negative plate positioned forwardly of said panel; means for supporting said negative plate from said back plate; and an electro-magnetic means for vibrating said negative plate,

7. A photographic negative retouching device comprising: a supporting panel; a face plate secured on the front of said supporting panel; spring supporting studs extending rearwardly from said panel; leaf springs extending from said studs; a ring plate supported from said leaf springs rearwardly of said panel; an annular back plate; coiled springs supporting said back plate rearwardly of said ring plate; a second set of coiled springs extending from said back plate forwardly through said ring plate and through said face plate to a position in front thereof; a negative plate supported from said latter springs forwardly of said face plate; and electro-magnetic means for vibrating said negative plate.

8. A photographic negative retouching device comprising: a supporting panel; a 'face plate secured on the front of said supporting panel; spring supporting studs extending rearwardly from said panel; leaf springs extending from said studs; a ring plate supported from said leaf springs rearwardly of said panel; an annular back plate; coiled springs supporting said back plate rearwardly of said ring plate; a second set of coiled prings extending from said back plate forwardly through said ring plate and through said face plate to a position in front thereof; a negative plate supported from said latter springs forwardly of said face plate; a magnet supporting arm extending rearwardly from said negative plate; means resiliently mounting said arm on said back plate; an electro-magnet mounted on said arm; and a resilient armature member mounted on said arm in freely vibrating relation with said magnet.

HARRY LE ROY ADAMS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 522,372 Hornberger July 3, 1894 632,643 Choate Sept. 5, 1899 FOREIGN PATENTS Number Country Date 7 64,297 France Mar. 5, 1934

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