US1075680A - Photographic-printing machine. - Google Patents

Description

J. N. ANDERSON. PHOTOGRAPHIG PRINTING MACHINE. APPLIOATION FILED 111111.23, 1911. l 1,075,680. Patented 0011.111913.

`2 sums-SHEET 1.`

J. N. ANDERSON. PHOTOGRAPHIG PRINTING MAGHINE.

' APPLIOATION FILED 111111.23, 1911.

1,075,680. vPatented 001.1111913.

y 2 SHEETS-SHEET 2.

UNITED sTATEs PATENT oiifiiicE;

JOHN N. ANDERSON, OF CHICAGO, ILLINOIS.

PHOTOGBAPHIC-PBINTING MACHINE.'

Specification of Letters Patent. Application led latch 23, 1911.

Patented Oct. 14, 1913.

Serial No. 318,389.

To all whom z' may concern:

Beit known that I, JOHN N. ANDERSON, a citizen of the United States, and resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Photographic-Printing Machines, of which the following is a specific-ation, and which are illustrated in the accompanying drawings, K forming a part thereof.

rlhe invention relates to machines` for printing photographs from negatives, and is adapted for making contact prints or enlargements; and it consists broadly in a structure having a table and a lantern mounted on standards rising from the table, and being provided with a removable lens holder and a movable plate holder; and more specifically itconsists of various tails of construction as hereinafter described.

The invention is illustrated in the accompanying drawings, in which- Figure 1 is a'vertical chine, parts being shown in elevation; Fig. 2 is a detail perspective, some of the parts being broken away; and Fig. 3 is a plan siection of the lantern on the line 3-3 of The table is shown at 10, and may be provided with any suitable supports,- not shown. A pair of tubular standar s 11,12, are firmly fixed in the table and project upwardly therefrom. The lantern is rovided with brackets 15, 16, of any pre erred forni of construction, which'are adapted lto slidably engage the standards or appurtenances thereof. I prefer to provide asways for the brackets rods 13 14, which are fixed to the standards and located at the inner sides thereof. The lantern is supported by cables 17, 18, turning over sheaves 19, 20, journaled within lateral apertures in the standards and adjacent their up r ends,` one end of each cable being attac ed to a vcoi'in-v rimmng within the standterwei ht 21, 22,

thereof-being secured ards, e other ends to the brackets.

The lantern, generally designated -by the numeral 23, is preferably, though notnecessarilg, cylindrical in form, as shown. Within e upper endof thelantern thereis placed a suitable lampY 24, preferably an incandescent electric lamp.- supplied with en rrent through wires 25 leading from a sintf section of the maa pair of arms each having at its outer en contact or by enlargement.

able circuit. Belowv the lamp erably placed a ground glassscreen 26, and below this screen a frame 27 for receiving a .removable plate holder 28. lVithin the lower end of the lantern there is placed a removable lens carrier29, which is used in` making enlargements, and is longitudinally 1adjustable for the purpose of securing the desired focus. The sensitized (paper upon which the imprint is to be ma e is placed upon the table 10 in 'the position indicated at 30.

When contact prints are made a printing frame 31 is used, and is located upon the table 10, and the lens carrier 29 and plate holders 28 are, for this class of work, entirely removedfrom the lantern, as indicated in Fig. 2. The light is thrown for this work through the open endof the lantern directly upon the printing frame.

When enlargements are to be made the negative is carried by the plate holder 28, the lens holder is fixed Wit-hin the lantern and is adjusted as may lie-necessary for the purpose of securing the proper focus, and the paper for receiving the print issimply spread upon the table and is under the direct view and control of `the operator. As shown,.each of the brackets 15, 16 comprises an eyeencircling one of the guide rods, as 13, 14, the inner ends of these arms being there is pref- ,s

united by a cross bar to which they are the'lantern being clamped to this cross 'ded with radially projecting lugs for this purpose. This arrangement gives the operator full control of the lantern for the purpose of adjusting it vertically to secure the vproper enlargement of the picture. vIt also enables him to conveniently shade the print as may necessary for equalizing the light should the negative be of unequal tions of its area, this manipulation being providedfor whether the` print is made by rigidly attached,

` bar, being provi In the preferred form of the lantern the body sheet metal cylinder 32, having its lower end contracted, as shown at 33, and terminating in a cylindrical section 34 within which the lens carrier makes a slip joint. A set-screw 35 is set through the wall of the tubular sec tion 34, preferably a boss 36 being secured to the outer' face thereof to' give ample construction .of thereof is formed of a density through p orp.

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y. stockwithin which a threaded aperture may y r of which is indicated at 40.

I With'the slideWays of the frame 27 through offset being spaced apart from the upper end of lthe cylindrical section 41, thereb providing for ventilation. l

A conical cap 50 is tted loosely vvithi: the upper end of the cylindrical section 42 and 1s provided with outstanding lugs, a 51, for resting upon an instanding bead 5E formed' in the section 42. The lower end o: the cap is cylindrical in form, as shown a1 53, andthe upper end, of the cylindrical section'42 is provided with instanding lugs 54` 55, as many as may be foundy desirable for properly supporting the cap, thus providing further Ventilating space.

The body of the lantern is secured to the brackets l5, 16, in any suitable manner. l I claim as my invention- In a photographic machine,`in combination, a table, standards rising from the table, a vertically adjustable lantern carried by the standards and having a downwardly opening light emitting aperture, a' lens carrier adapted to be removably applied to the aperture, and a plate holder seat located above ,the aperture and adapted to permit the unobstructed Apassage of light therethroughwhen unoccupied by a plate, Where'- by the machine may be interchangeably used for making enlargements or for contact printing.

be formed. This set-screw may bev used for locking the lens holder in anyposition to which it may be adjusted Within Y the lantern. The lens holder is also shown as formed of sheet metal, its upper end being cylindrical in form for iitting into the lower end of the lantern, and is contracted, as shown at 37, and terminates in a tubular section 88 to which the lens casing 39, of any desired construction, may be attached.

he lens casing is also preferably providedL` With a shutter, the controlling nger-piece The frame 27 for the plate holder is secured Within the cylinder 32, and this cylinder has a ,lateral opening 56 in line which the plateholder 28 may be inserted.

The glass screen 26 is shown as seated directly upon the plate holder frame 27. The upper portion of the body of the lantern comprises a plurality of cylindrical sections 41, 42, the lower one telescoping into the upper end ofthe section 32 and being secured in place by suitable beading 43; the upper section 42 telescopinginto the section 41 and making a loose ht therewith, and being provided with a plurality of outstandlng lugs, as 44, 45, 46, 47, adapted to rest upon an instanding bead 48 formed in the section 41. The upper end of the section- 42 is oii'set outwardly, aS ,Shown at L49, the

JoHN N. Anpassen. Witnesses l Lome K. GILLsoN, E. M. KLATcHER;

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