US1256760A - Mechanical negative-retouching device. - Google Patents

Description

R. L. WOODS. MECHANICAL NEGATIVE R ETOUCHING DEVICE.

Patentd Feb. 19, 1918.v

2 SHEETS-SHEET I.

APPLICATION FILED SEPT 13. I916.

HObert Lil 50d? I R. L. WOODS.

MECHANICAL NEGAHVE RETOUCHING DEVICE APPLICATION FILED SEPT I3. 1916- Patented Feb. 19,1918.

2 SHEETS-SHEET 2.

B01567t L ROBERT LEONARD'WOODS, 0F MELBOURNE, ARKANSAS.

HECHANTCAL NEGATIVE-RETOUCHING DEVICE.

Specification of Letters Patent.

Patented Feb. 19', 1918'".

Application filed September 13, 1916. SerialNo. 119,879.

To all whom it may concern:

Be it known that 1, ROBERT LEONARD Woons, a citizen of the United States, and

resident of Melbourne, in the county of hard and State of Arkansas, have invented certain new and useful Improvements in Mechanical Negative-Retouching Devices, of which the following is a specification.

The present invention relates to photography and has particular reference to new and useful improvements in negative retouching devices.

The primary object of my invention is to provide a mechanical retouching device for retouching negatives and the like whereby to facilitate the process of retouching negatives rendering the same less tedious and producing more accurate results more quickly.

Another object of my invention is to provide a mechanical retouching device for negatives which may be electrically operated, the source of power being in the form of an ordinary vibrator which when in operation will. require little or no attention.

A further object of my invention is to provide a mechanical retouching device for negatives which is simple in construction, strong and durable, cheap to manufacture and effective in operation.

Other objects and advantages to be derived from the use of my mechanical negative retouching device will appear from the following detail description and the claims,

taken with an inspection of the accompany ing drawings, in which- Figure l'is a longitudinal sectional view of a retouching device embodying the improvements of my invention, the operating mechanism being shown in elevation;

Fig. 2 is an enlarged fragmental side elevational view of the pencil holding and operating member;

Fig. 3 is an end view of the same, parts being shown in section,

Fig. 4 is a transverse vertical sectional view of the retouching device,

Fig. 5 is an enlarged perspective view of the pencil holder,

Fig. 6 is an enlarged transverse sectional view taken on the line 6 6 of Fig. 3 look-- mg n the direction of the arrow, and.

Fig. 7 is a similar view taken on the: line 7 7 of Fig. 3-looking in thedirection of the arrow.

Referring more particularly to the draw! throughout the various views, 1 designates in its entirety the body or supporting frame of my improved retoucher, the same having" a light chamber C provided with a diagonal deflecting member R. The bottom and one end of the body 1 are open to permit the entrance of light. provided in the top 3 of the body, the negative to be retouched being placed over said opening.

The mechanical retouching mechanism of my invention includes a supporting frame 4' having a foot portion 5 to be fastened to the top 3, the frame preferably being in spaced relation to the top so as not to interfere with the free movement of the negative on said top. A post 6 extends from and is formed integrally with the frame 4, said post having a laterally extending head portion 7 to support an adjusting screw described in de-- tail hereinafter. A .pair of electro- magnets 8 and 9 are stationarily mounted upon the base l, said magnets being alternately and intermittently energizedfrom an electric circuit c in which is interposed a vibrating switch (Z and a source of electrical energy such as a battery 6.

It is obvious that when the switch is connected with the post E the magnet 9 will be energized thus raising the cross arms 21, while if the switch key is connected with the post F the magnet 8 would be energized causing the operative motion of the retouching element.

A light opening 2 is A bearing bracket 10'is mounted at 11 on' v the post or standard 6, an oscillating armature 12 being pivoted at 13 in said bracket, said armature having its free extremities disposedabove the upper ends of the electromagnets 8 and 9 to be influenced thereby when said magnets are energized. An arm" 14: extends from one end of the armature 1 said arm being disposed at a slight angle to the armature and provided with a free end portion 15 for pivotal connection with the pencil carrying element described in detail hereinafter.

I provide stroke regulating means for the armature 12, said means comprising a spring strip 16 rigidly clasped at one end to the head '4', by means of a screw 17 or other suitable securing means the free end of said spring carrying a screw 1? in adjusted positions by means of a thumb nut 18. The lower free end of the screw is disposed in the path of movementof one end of the armature so that the stroke of the armature is limited thereby.

The retouching element is carried by an arm 19 which extends laterally from the post 6, said arm 19 having a cross-head guide 20 carried by the free end thereof, said guide being vertically disposed.

A pencil carrying frame or cross-head 21 is provided, the same being slidable vertically upon the cross-head guide 20, the upper free end of the cross-head 21 having a rod 2 extending through a lateral extension .3 formed in the cross-head guide. A pair of arms 2% is formed on the lower end of the cross-head guide to embrace the cross-head as best shown in Figs. 3, 6 and 7. A tongue 25 is offset from the cross-head guide to guide the lower end of the crosshead. The cross-head guide is pivotally connected at 26 to the free end 15 of the arm 14.

The pencil holder or marker member is designated 28 and includes a strip of metal formed with a threaded shank 29 at one end and a tapering tubular portion 30 at the opposite end. A lug 31 is formed on the outer face of the cross head 21 and is provided with a bore which is of slightly larger diameter than that of the threaded shank 29 permitting an adjustment of the same by means of the thumb nut 32 which is mounted on the free end thereof in connection with the lock nut 32. A piece of retouching lead 3st is loosely disposed within the tubular portion 30 so that the cross head may finish the stroke even after the lead has struck the negative. This will prevent any puncturing of the negative or mutilation of the same.

In Fig. 1 the negative has been shown in position for retouching and is designated N. If desired, a set screw indicated in dotted lines in Fig. 5 and designated 37 may be provided for fastening the lead rigidly in the holder, this being necessary where a heavy stroke is desired.

In use the negative is placed upon the top over the opening therein and beneath the pencil. Current is now supplied to the electromagnets alternately and intermittently causing the same to oscillate the armature,

which is locked this in turn reciprocating vertically the cross head 21. This vertical movement is imparted to the lead causing the same to mark the negative. The negative may be moved by the operator from place to place to obtain the desired retouching effects. The stroke of the cross-head may be readily adjusted by the screw 17.

From the above description taken in connection with the accompanying drawing, it is thought that a clear and comprehensive un derstanding of the construction, operation and advantages of my invention may be had, and while I have shown and described the (evIce as embodying a specific struc ture, I desire that it be understood that such changes may be made in said structure as do not depart from the spirit and scope of the invention as claimed.

Having thus fully described my invention, what I claim as new and desire to se cure by Letters Patent, is:

1. In a device of the character described, the combination with a base. having a sight opening therein, of a frame mounted on said base, a vertical standard extending from said frame, pair of electro-magncts on said frame, means for energizing the electromagnets, an oscillatable armature to be alternately actuated by said electroanagncts, a movable arm extending from said armature, a stationary ar 1 extending from said standard and having a cross-head guide on the free end thereof, a cross-head movable in said guide and pivotally connected with said movable arm, a lead iolder mounted on said cross head, and adjusting means therefor, said lead holder being disposed above said sight opening.

2. A device of the class described, including base having a sight opening therein, a frame mounted on said base, a plurality of olectro-magnets carried on said frame, means for energizing the electromagnets, a standard extending from the frame, an armature to be acted upon by said electromagnets, a movable arm extending from said armature means for limiting the stroke of said armature, a stationary arm extending from said standard, a cross-head guide carried by the free end of said stationary arm and a cross-head operable in said guide, said cross-head being pivotally connected with said movable arm, and a lead holder adjustably carried by said cross-head and disposed above said sight opening to engage the surface of a negative for retouching the same.

3. In a device of the character described, the combination of a frame, a post extending therefrom, a lateral. extension formed on the free eno of said post, a motion imparting means, means mounted on said extension to limit the motion imparting means, a stationary arm extending from said post, a cross tension, an arm connecting the motion imhead guide formed on the free end of the parting means and said cross head to operate 10 stationary arm, a lateral extension provided the same, and a marking element carried by on the upper end of the cross head guide, a the cross head for a purpose specified.

cross head, a pair of arms formed on the In testimony whereof, I my signature cross head guide to embrace the cross head, hereto.

a rod extending from the said cross head and slidably mounted in the last said eX- ROBERT LEONARD YVOODS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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