US1315732A - Hebvey h - Google Patents

Description

H. H. MCINTIRE.

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APPLICTIQN FILED NOV. 12. 1917. v1 ,3 1 5 ,732 Patented Sept. 9, 1919.

d a n r a f r fffff iraniani /A/vE/vro/v irre/Marx HERVEY H. MCINTIRE, OF SOUTH BEND, INDIANA.

VIGNETTING DEVICE FOR PHTOPRINT'INGMACHIN'ES.

Specification of Letters Patent.

Patented Sept. 9, 1919.`

lApplication led November 12, 1917. Serial No. 201,466.

To all whom t may concern.'

Be it known that I, HERVEY H. MoINTmE, a citizen of the United States, residing at South Bend, in the county of St. Joseph and State of Indiana., have invented certain new and useful Improvements in Vignetting Devices for Photoprinting-Machines, of which the following is a specification.

The invention relates to means for use in connection with a photographic printing machine for vignetting photographic prints, and more particularly to vignetting means adapted for controlling and regulating the vignetting effect on the print by means handily manipulated from without the machine, whereby the effect of shadows produced by said means on the negative preliminary to the printing operation may be observed through 'the negative while manipulating said means, and the desired adjustment of the vignetting mask thus easily and rapidly accomplished. Further, in the use of the present improvement, the adjustment of the vigiietting mask with relation to the negative ing accomplished from without the machine, there will be no exposure of the light from within the machine to interfere with dark room operations `in making such adjustments, as necessarily follows when access to the interior' of the machine mist be had for said purpose.

The invention in the preferred form of details will be described in the following specification, reference being had particularly to the accompanying drawings, in which Q Figure 1 is a view partly in elevation and partly in section of the upper portion of a photographic machine embodying my invention.

Fig. 2 is a plan view with the table partly cut away to show the vignetting means beneath the negative.

Fig. 3 is a perspective view of `a part of the mask adjusting means.

The reference numeral 1 indicates the upper portion of a photographic printing machine case, and 2 the top or table portion thereof, which has a flanged opening 3, adapted to support a negative 4:, upon which the print paper is placed and suitably held for the printing operation, as is well understood in the art. An electric lamp 5 is disposed witliin the machine case and suitably controlled for submitting the print paper and the source of light bey bearings and the sha to the exposure of the light through thenetgative, as is also well understood in the: ar

`Sui-tably supported within the machine case and beneath the negative, so as to be interposed between the source of light and the negative, is what I term a mask frame 6, adapted to receive a vignetting mask 7, having an opening 8 through which the light pas-ses to the negative, and which mask may obviously have an opening of such outline as will conform to the vignetting eect desired, an oval opening being shown Simply for the purpose of illustration. Also, the mask being loosely supported in the'frame, one may loe easily and quickly substituted for another having a cut-out of the desired form.

Fixed in any suitable manner to the under side of the machine top, are downwardly directed guide pins 9, which loosely pass through loop members 10 extending laterally from the corners of the mask frame (i,

and which pins have heads 11 formed on the lower ends thereof which serve as rests to limit, through the loop members, the downward movement of the mask frame, as plainly shown in Fig. `1.

Suitably supported on the opposite sides of the machine case are tubular shafts 1:2, through and beyond both ends of which extend smaller shafts 13 adapted to be rocked independent of the shafts 12, and which shafts pass through the front wall of the `,machine and are provided with handles 14.

and 15, by means of which either thereof may be rocked independently of the other. The shafts are supported by what I term friction bearings 16, comprising a base member 17 and a cap member 18, each of which has its lower portion curved to jointly form a substantially circular bearing for the shaft, and upper flange portions 19, adapted to be held in juxtaposition and to the machine case by a bolt 20 passing through the casing wall and said flanges, and a coil spring 2l encircling the bolt between the flange portion 19 and a nut 22 on the bolt, by means of which latter the tension of the spring may be adjusted to obtain the proper degree of frictional en agement between the fgts which will hold the latter in any position of rotative adjustment effected through the use of the handles 14 and 15. Suitably fixed to the inner ends of said shafts are fingers 211 and 25, the free ends of which extend beneath and are adapted to engage the under side of the mask frame for raising and lowering the latter according as the shafts are rocked by manipulation of the handles thereon.

By reference to Fig. 1, it will be seen, as represented by dotted lines, how either end of the mask frame may be raised with relation to the negative by manipulating the proper lifting fingers. Also it will be obvious that the mask frame as a whole may be raised or adjusted to and from the negative by the proper manipulation of all of the lifting fingers. Furthermore, it will be obvious that either the front or back end of the mask frame may be raised, that is, in a manner transverse to the adjustment shown by dotted lines in Fig. l, by operating either the pair of front or back fingers.A In fact the mask used for Vignetting may be adjusted with relation to the light and the negative in a most rapid and satisfactory manner by the present invention, as the mask may be n'lanipulated, as is clearly apparent, from without the machine, and the light effects observed by' the operator through the negative in the act of such manipulation.

l. A photographic printing machine com,- prising a casing, a negative supporting means on the casing, a source of light in the casing, a vignetting mask adjustably supported between the negative and the source of light, and means operable from without the casing for vertically and angularly adjusting the mask with relation to the negative.

2. A photographic printing machine comprising a casing, a negative supporting means thereon, a source of light therein, a vignetting mask adjustably supported between the negative and the light, means operable for vertically and angularly adjusting the mask With relation to the negative, and means for holding said adjusting means against movement.

3. A photographic printing machine comprising a casing, a source of light therein, a negative holding means thereon, a vignetting mask adjustably supported between the negative and the light, rock shafts mounted within the casing, fingers on the rock shafts the free ends of which extend beneath said mask, and means for rocking said shafts.

4. A photographic printing machine comprising a casing, a source of light therein, a negative holding means thereon, a vignetting mask supported between the negative and the light, guide members extending from the casing, means on the mask coperating` with said guides to support and limit the movement of the mask for adjustment with relation to the negative, and means for vertically and angularly adjusting the mask.

5. A photographic machine comprising a casing, a source of light therein, a negative supporting means on thecasing, a vignetting mask adjustably supported between the negative and the light, oppositely disposed tubular rock shafts one end of which extends through the casing, other rock shafts extending through and beyond the respective ends of said tubular shafts, connections between said shafts and the mask for vertically lifting the mask upon rocking of the shafts, means for independently rocking the shafts, and means for holding theI shafts against rocking movement.

In testimony whereof I affix my signature.

HERVEY H. MCINTIRE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, 1). C.

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