US1033404A

US1033404A - Photographic-printing apparatus.

Info

Publication number: US1033404A
Application number: US57773810A
Authority: US
Inventors: William C Huebner
Original assignee: HUEBNER BLEISTEIN PATENTS Co
Current assignee: HUEBNER-BLEISTEIN PATENTS Co; HUEBNER BLEISTEIN PATENTS Co
Priority date: 1910-08-18
Filing date: 1910-08-18
Publication date: 1912-07-23
Anticipated expiration: 1929-07-23

Description

W. 0. HUEBNER. PHOTOGRAPHIC PRINTING APPARATUS.

APPLICATION FILED AUG. 18, 1910.

1,033,404. Patented July .23, 1912.

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PHOTOGRAPHIG PRINTING APPARATUS.

APPLICATION FILED AUG. 18, 1910.

1 33,404. Patented July 23, 1912.

4 SHEETS*SHEET 2.

W. G. HUEBNER. PHOTOGRAPHIG PRINTING APPARATUS.

APPLICATION FILED AUG. 18, 1910.

1 33,404. Patented July 23,1912.

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W. G. HUBBNER.

PHOTOGRAPHIC PRINTING APPARATUS.

APPLICATION FILED AUG. 18, 1910.

1 33,404. Patented July 23, 1912.

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UNITED. STATES PATENT OFFICE.

WILLIAM C. HUEBNEB, 0F BUFFAT; NEW YIJPIIZZSSIGNOB TO HUEBNER-BLEISTEIN PATENTS COMPANY, OF BUFFALO, NEW YORK.

PHOTOGRAPHIC-PRINTING APPARATUS.

Specification of Letters Patent.

Patented July 23, 1912.

Improvement in Photographic-Printing Apparat-us, of which the following is'a specification.

This invention relates to photographic apparatus for reproducing, with or without enlargement or reduction, pictures or subjects in predetermined positions on one or more sensitized printing or other surfaces.

In producing sectional printing surfaces which are used for printing enlargedreproductions of a picture or subject, it is essential to satisfactory results that the different sections should be enlarged in the same proportion and that they should join or connect without break. In multi-color printing it is also necessary that the printing surfaces for the separate colors should register exactly, and in other classes of work it is necessary to make the reproductions of the picture or subject in corresponding positions and on the same scale on different surfaces, or to make a plurality of rints of the same or different subjects in different predetermined positions on the same surface.

The object of the invention is to produce an efficient and practical photographic printing or projecting apparatus by which a picture or subject can be reproduced in predetermined positions and on a predetermined scale upon one or more sensitized surfaces with great exactness and in an expeditious manner.

The apparatus comprises a photographic projecting device provided with a suitable ens or lenses, a holder or carrier, hereinafter called the picture holder, for the plate or other object bearing the picture or subject to be reproduced, and a holder or. carrier, hereinafter called the plate holder,

for the sensitized surface, which may be a stone, copper or other plate, glass or paper. The projecting device or lens and the picture holder are independently adjustable longitudinally or in the optical axis relative to each other and to the plate holder, for prop crly focusing the lens and for regulating the size of the reproduction, and the plate holder is adjustable in two directions at right angles to each other in a plane transverse to the optical axis, so that the reproductions can be made in a predetermined desired position or positions on the sensitized surface or surfaces. The icture holder or carrier is provided with ho ding means constructed so as to center the picture or subject with reference to the optical axis, and is preferably equipped with illuminating means for the picture or subject. The mechanisms for adjusting the projecting device and the picture holder in the optical axis and for adjusting the plate holder transversely of the optical axis are preferably provided with micrometer indicating devices which indicate the position of the adjustable parts and enable the parts to be adjusted wit-h great precision, to the predetermined required positions.

In the accompanying drawings, consistin of four sheets: Figure 1 is a longitudinfi sectional elevation of a photographic printing apparatus embodying the invention. Fig. 2 is a plan view thereof, partly in horizontal section, in line 22, Fig. 1. Fig. 3 is an end elevation thereof. Fig. 4 is a transverse section thereof showing the picture holder in elevation. Fig. 5 is a transverse sectional elevatioh, on an enlarged scale, of the reducing gearing of the micrometer indicator of the adjusting mechanism for the projecting device. Fig. 6 is a plan view, partly in section, in line 6-6, Fig. 5. 4 Like reference characters refer to like parts in the several figures.

A represents the photographic projecting device which may be of any suitable or known construction, that shown in the drawings comprising a projecting lens a and an extensible hood or camera a in the movable end of which the lens is carried. The projecting device is located between the picture or su ject and the sensitized surface and these are separated by an o aque wall or screen B havin an opening or the passage of the rays of .ight projected by the lens a. The movable end of the camera carrying the projecting lens a is mounted on a suitable upright frame or support C which is adjustable longitudinally or parallel with the optical axis for focusing the lens. shown, the frame or support C is adapted to slide on horizontal guide ways or tracks 0 of any suitable construction and is adjusted by a horizontal screw 0 which is suitably journaled in the base portion of the apparatus and engages a nut or threaded lug on the lower portion of the support for the projecting device. The adjusting screw 0 has a handle 0 at its outer end for turning it.

D represents the plate or other object bearing the picture or subject to be reproduced which is arranged in rear of the projecting device in a plane at right angles to the axis thereof and is mounted in a suitable picture holder or carrier E which is adjustable longitudinally or parallel with the optical axis relative to the projecting device for regulating the size of the reproduction.

The picture holder E shown, see Fig. 4, comprises a rectangular-frame e, upper and lower holding bars 6' and e which are movable vertically toward and from each other, and opposite side bars e and e which are movable laterally toward and from each other so that the picture or subject plate D is surrounded and held at its four edges by the holding bars. The horizontal bars e e have rearwardly projecting ledges or parts e provided with movable clamping strips 6 adapted to engage and clamp the top and bottom edges of the plate D against the rear faces of the upper and lower bars e 6 The side bars e e are located in rear of the upper and lower bars 6 e and are adapted to bear directly against the side edges of the picture or subject plate D. The upper and lower holding bars e and e are moved toward and from each other by screws j which are journaled in the holder frame 6 and are provided with oppositely screwthreaded portions engagin nuts f at the opposite ends of the holding bars. These screws f are connected to turn together by.

a shaft f journaled on the top of the holder frame e and bevel wheels i one of the screws being connected by bevel wheels f to an operating crank f. The upright holding bars e and e are moved toward and from each other by similar means comprising upper and lower horizontal screws f journaled in the frame e and having right and left handed screw threads engaging in nuts f .at the ends of the holding bars. The

. lower screw f is provided with a handle for turning it and the two screws are connected to turn together by a shaft and bevel wheels f". The opposite holding bars of the picture holder E are moved simultaneously and correspondingly by their operating screws so as to secure the plate or other object carrying the picture or subject centrally in the holder ,E.

The frame 6 of the picture holder is mounted to slide horizontally toward and from the projecting device on the ways or tracks a, on which it is adjusted by suitable means, such, for instance, as a horizontal screw G suitably journaled in the base portion of the apparatus and engaging in a screw-threaded nut or lug g at the bottom of the-frame e The screw G is provided at its front or outer end with a crank or handle for turning it.

The pair of horizontal holding bars e e of the picture holder which are movable toward and from each other are arranged equidistant above and below the optical axis, and the pair of vertical holding bars 6 e which are movable horizontally toward and from each other are arranged equidistant on opposite sides of the optical axis, so that the picture which is clamped between these holding bars is automatically centered with reference to this axis upon closing the two pairs of bars successively against the picture. The optical axis is fixed because the projecting device is not adjustable transversely to the optical axis.

H represents illuminating devices for the picture or subject D. Electric lamps or other suitable illuminating devices may be employed which are preferably mounted on frames h pivoted to the picture holder so that the lamps can be moved to positions for properly illuminating the picture or subject.

I represents the sensitized plate or stone which is secured in a plate holder or frame I which is arranged in a plane at right angles to the axis of the projecting device and is mounted so that it can be adjusted in two directions at right angles-to each other in said plane in order that different portions of the sensitized surface can be placed in alinement with the projecting device for reproducing the picture or subject thereon.

The plate holder 1 may be of any suitable construction and provided with any suitable securing means for the sensitized plate, such, for instance, as upper and lower clamping bars 2' which are simultaneously moved toward and from each other to engage and re- .lease the plate by upright screws i journaled in the frame I and having oppositely threaded portions engaging threaded nuts 2' at opposite ends of the clamping bars. These screws i are connected to turn together by a shaft i and bevel wheels 2', the shaft 11 being connected by bevel wheels i to an operating hand shaft z', Figs. 1 and 3.

The plate holder I is mounted to move in one direction, for instance, vertically in a carriage or frame K which in turn is mounted to move horizontally in a stationary supporting frame L. As shown, the

plate holder 1 is adapted to slide on the L and a horizontal guide rod Z at the upper portion of the supporting frame, and is adjusted by suitable means, such as upper and lower screws Z l which are journaled in the supporting frame L and engage threaded nuts or lugs 1* on the carriageK. The lower track Z is adjustable verticallyjto compensate for wear and prevent looseness of the car-.

ria The lower screw is provided at one en with a handle Z for turning it and the, screws are connected to turn together by an upright shaft Z journaled on the supporting frame, and bevel wheels 1 By adjusting' the carriage K horizontally in the supporting frame and the plate holder I vertically in the carriage, any desired portion of the sensitized surface can be placed in fieldzof the projecting lens.

M represents a half tone or mezzo screen which is supported in a position to cover the sensitized surface in such manner as to enable the screen to be adjusted nearer to or farther from the sensitized surface. Any suitable holder and adjusting means therefor which permits a fine adjustment of the screen can be employed. The screen holder N shown comprises bars n secured to the top and bottom edges of the screen and adapted to slide transversely of the apparatus on horizontal guide bars n which in turn are adapted to slide toward and fromthe plate holder I on stationary bars a of the supporting frame L.

n represents upright shafts journaled on the supporting frame at opposite ends of the screen and provided with eccentrics n, Fig. 2, engaging the guide bars 72," for adjusting the screen holder toward and from the sensitized surface. One of these eccentric shafts n is connected by bevel gears n to an operating crank shaft n and the two shafts are caused to turn together by a connecting shaft n and bevel gear wheels u see 'Fig. 3. The operating crank shaft is provided with a graduated disk O cooperating with an index 0 for indicating the adjustment of thescreen, a large disk 0 being preferably used to facilitate a fine adjustment.

Each of the mechanisms for adjusting the projecting device and the subject holder longitudinally and for adjusting the sensitized plate holder transversely horizontally and vertically, is provided with a micrometer device which indicates very minutely the adjustment of the part to which it relates and thus enables the part to be adjusted with great precision;

P represents the micrometer indicator of the adjusting mechanism for the projecting device. This indicator comprises two wheels p p, Fi s. 2 and 3, suitably journaled side by side, and an index pointer which cooperates with scales on the periphcries of the wheels. The scale of the wheel p has equal divisions representing the travel of the projecting lens in inches or other units of measure, and the scale of the other wheel p has divisions representing fractions, (for instance, hundredths), of the inches or units represented by the scale of the first wheel. The fractions wheehp is cared to the adjusting screw 0? for the pro.

jecting device by any suitable train of gears p which will turn the fractions wheel one complete .revolution for every inch or unit of travel of the projecting device, while the units and fractions wheels 1) and p are geared together by any suitable train of gears p which will turn the units wheel a distance corresponding to one of its inch or units divisions for each complete revolution of the fractions wheel. The gear train 39* for connecting the units and fractions wheels, shown in Figs. 5 and 6, comprises a wheel g which is driven by the fractions wheel 7) and drives a wheel q connected by bevel wheels 9 to a shaft provided with a worm g which drives a worm wheel 9 secured to or formed with a gear wheel g which drives the units wheel 1). The wheels q and (1 are loosely journaled on the adjusting screw 0. When the screw 0 is turned for adjusting the projecting device, the indicating wheels p and p are rotated by the described gearing andindicate in inches (or other units) and fractions thereof the movement of the projecting device. As the relatively large divisions of] the fractions wheel p can be made to represent minute fractions of an inch or other unit of. measure, the projecting device can be quickly and easily adjusted to a required position with great precision. and the exact position thereof at any time is shown by the indicator, so that by observing the indicator the projecting device can be repeatedly adjusted to precisely the same position.

R, S and T represent the micrometer indicators, respectively, of the mechanism for adjusting the picture holder E longitudinally, the horizontal adjusting mechanism for the sensitized plate holder I, and thevertical adjust-ing mechanism for the sensitized plate holder. Each of these indicators is constructed and operates substantially like the indicator P, above described.

1' 1" represent, respectively, the units and ter .of which is geared to the horizontal adjusting shaft Z for the sensitized plate holder by wheels 8 t 23 represent, respectively, the units and fractions wheels of the indicator T which are geared together by wheels t and the latter of which is'geared to the vertical adjusting shaft is for the sensitized plate holder by wheels t I claim as my invention 1. The combination of a photographic projecting device, a holder for a sensitized surface, and a subject holder having two pairs of clamping devices movable at right angles to each other, the clamping devices of each pair being arranged equidistantly from the optical axis,,and means for each ,pair for moving the clamping devices of such pair simultaneously toward and from the "optical axis, substantially as set forth,

2. The combination of a photographic projecting device,'a holder for a sensitized ,surface, and a subject holder having two pairs of clamping devices movable at right angles to each other, the devices of each pair being equidistant from the optical axis, and adjusting screws one for each pair for simultaneously moving the devices of its respective pair toward and from the optical axis, substantially as set forth.

3. The combination of a photo raphic projecting device, a subject holder aving two pairs of clamping devices movable at right angles to each other, the clamping devices of each pair being arranged equidistantly from the optical axis, means for each pair for moving the clamping devices of such pair simultaneously toward and from the optical axis, a holder fora sensitized surface which is adjustable in a plane transverse to the optical axis, and means for adjusting said holder for the sensitized surface in said plane'in directions at right angles to each other, substantially as setforth;

Witness my hand in the presence of two subscribing witnesses.

WILLIAM C. HUEBNER.

Witnesses: V i

C. W. PARKER, A. L. MCGEE.