US519276A

US519276A - stegemann

Info

Publication number: US519276A
Authority: US
Publication date: 1894-05-01
Anticipated expiration: 1911-05-01

Description

4 Sheets-Sheet 1.

(No Model.)

A. STEGEMANN. MAGAZINE PLATE HULDBR.

Patented May 1, 1894.

(No Model.) 4 Sheets-Sheet2.

A. STEGEMANN. MAGAZINE PLATE HOLDER.

No. 519,276. Patented May 1l 1894. f9.2 lM- 'g Zig/.

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e i 3 e E la 5 S I 1V Q la i Ii e HL g (No Model.) 4 Sheets-Sheet 3.

A. STEGEMANN.

MAGAZINE PLATE HOLDER.

No. 519,276. Patented May 1,1894.

'Iy/Z Ey. /i T1915 (No Model.)

4 Sheetsv-Sheet 4. A. STEGEMANN.

' MAGAZINE PLATE HOLDER. No. 519,276. Patented May 1, 1894.

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` a front view of the changing box.

UNITED STATES PATENT OFFICE.

AUGUST srEGEMANN, or BERLTN, GERMANY.

MAGAZIN E PLATE-HOLDER.

SPECIFICATION forming part of Letters Patent No. 519,276, dated May 1, 1894.

Application tiled December 29, 1892. Serial No. 456.702. (No model.)

To a/ZZ whom it may concern:

Be it known that I, AUGUsr STEGEMANN, a subject of the King of Prussia, and a resident of Berlin, Germany, have invented certain new and useful Improvements in Magazine Plate-Holders, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to a changing box for photographic cameras, which is arranged in combination with a case designed for depositing the exposed plates. After every photographic exposure this depositing case is fixed to one side of the changing box. In the adjoining walls are two slots ordinarily closed by slides, so that the exposed plate, when the two slides are in the proper position, can slide from the changing box to the depositing case. The slide may be actuated either by hand through the medium of a special mechanism or automatically. In order that the sliding of the plate may take place after uncovering the slots, the mechanisms provided on the two receptacles, when the latter are put together, set free the foremost exposed plate and separate it from the others, so that :it can drop into the depositing case. The two receptacles are in this instance so close together that during the sliding movement no rays of light can fall upon the plates. If then, the depositing case is removed from the box, after theslots have been closed again by the slides, the next plate is automatically put in the proper position in the box for the fresh exposure.

In the accompanying drawings Figure 1 is Fig. 2 is a side view of the same. Fig. 3 is a transverse section on the line I-I of Fig. 1 with the follower p drawn back. Fig. .tshows the interior of the changing box with the front removed. Fig. 5 is a similar transverse section as Fig. 3 but with the follower p released. Fig. 6 is a transverse section on the line II-II of Fig. 5. Fig. 7 is a view of the sliding wall of the changing box. Fig. 8 shows a front view of the changing box with the depositing case attached thereto. Figs. 9 and 10 represent side views of the changing box and the upper part of the depositing case in two `positions in order to show the lever mechanism for actuating the slide shaft.

Figs. 11 and 12 represent sections through the sides of both receptacles on the line III- III of Fig. 8 showing the releasing mechanism. Fig. 13 shows the disengaging rod h 1n detail. Figs. 14. and 15 represent sections on the line IV-IV of Fig. 8 showing in two positions the locking device for holding the two receptacles together. Fig. 16 shows a longitudinal section of the changing box with the depositing case secured thereto. Figs. 17 and 18 are sections on the broken line V VI VII VIII of Fig. 16 of the box in two positions to show the devices for disengaging the slides. Fig. 19 is a transverse section taken upon the line IX-IX of Fig. 16. Figs. 20 and 21 show the slide wall of the depositing case with the slide in the two terminal positions. Figs. 22 and 23 show parts of Figs. 16 and 18 upon a larger scale.

The changing box A, Figs. 1 to 7 is slid in the customary manner into a suitable guide on the rear wall of the photographic camera.

On its front are inserted the sliding cover h and the glass plate c. Behind these are placed the plates c to be exposed. The sliding cover is not quite drawn out during thev exposure,

as shown in Fig. 5, but in order that it may not protrude laterally it is adapted for turning at b by means of hinges. The rear wall d of the changing box is formed by the door,

after the opening of which the plates c are AThe edges 3 do not quite reach the plate c;

through the intermediate space 4, Figs. 3 and 5, the foremost plate, after the exposure has taken place, can slide along the glass plate and through the slot 5 in the wall of the changing box to leave the latter. The slot 5 is closed by a slided Fig. 7, which is guided on the outside of the box by the plates 35.

In the changing box is arranged a spring follower p which presses the plates e forward against the glass plate c. It is fixed by hinge flaps 6 or similar means upon the rear wall or door a and is forced by one or more springs against the plates e. On opening the door a, when new plates are to be put in, the

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follower p is pulled back and held against the rear wall, as shown in Fig. 3. For this purpose it is connected with a cord 7 which passes over small pulleys arranged in the rear wall and extends to the end of the lever S, Figs. 1 and 4t. This lever S turns upon the pivot 9 on the inside of the door a. The cord 7 is preferably concealed in the groove a so that the spring follower p may be drawn close to the rear wall. This takes place by turning the lever 10 fixed upon the same pivot 9 as the lever 8 but on the outside of the rear wall ci Fig. 1. Above the pivot 9 is arranged a spiral spring mechanism 1a which acts in opposition to the pull of the spring 5 and always keeps the cord 7 stretched tight. New when the lever 10 is turned from the position indicated by dotted lines in the direction of the arrow tothe position shown in full lines the lever 8 on the inside of the door a passes from the position shown in full lines in Fig. t to the position indicated in dotted lines, the cord 7 being pulled and the follower p turned back from the position Fig. 5 to the position Fig. 3. In order that the follower p may not of itself dart forward I provide a locking device 11 which retains the level' 10'in the position Fig. 1. /Vhen the plates c have been putin the box and the door a has been closed thelocking device 11 is disengaged whereupon the follower p moves forward and presses against the plates e. In proportion as the plates e are used the follower p moves forward under the pressure of' the springs, the

levers

8 and 10 turning gradually in the opposite direction to that of the arrow indicated in Figs. 1 and 4. The ex tent of the turning movement of the lever 10 may serve for counting the finished plates, and for this purpose a graduated sector is provided as shown by Fig. 1.

After each exposure the depositing case B is fixed to the changing box A as shown in Figs. 9 to 15. Both receptacles are connected by hinges with one edge of the sliding walls to be fixed together. These edges are provided with stripsf and f which engage with each other like hooks. The two are hooked together and then serve as a hinge. But these hooked strips may also be dispensed with or replaced by other devices, they have chiefiy for their object to facilitate the proper fitting together ofthe two receptacles. Vhen the two receptacles are joined in the aforesaid manner they are held together by alocking device the arrangement of which is shown in Figs. 9 to 15. On both sides of the depositing case B are arranged the metallic plates 14 extending with their upper bent extremities over the sides of the box, they are moreover provided with small holes 15 into which take the spring pins 16 arranged on the box, thereby uniting the two receptacles. The spring pins 16 are in the casing g, Figs. 14 and 15 and are connected by lazy tongs 17, the spring 19 forces the pins 16 outward. Nith one of the said pins is connected the knob 18; by

forcing this knob back the two pins recede. In this manner the locking dev1ce is disengaged, and the depositing case B can then be taken off again.

In the adjoining walls of the two i-ecepta; cles are the two sheet metal slides d and d adapted to be displaced with their narrow edges between the guide plates 3o, 3e. In the position shownin Figs. 7 and 2O the slides cover the slots 5 in the changing box and 2G in the depositing case. j Ordinarily the slides are in the locked position, wherein they are kept by locking devices as hereinafter described. .Vhen the two receptacles are joined Figs. 9 to 12 one lies exactly upon the other. One slide is moreover provided with

pins

22, 22, Fig. 7, which when the two receptacles are joined fit into suitable holes 12, 12, in the other slide Fig. 20. The pins couple as `it were the two slides with each other, so that when one slide is displaced the other is earried away. In lieu of the coupling pieces any other suitable means may be employed for fulfilling the saine object.

For enabling the foremost plate immediately behindthe glass plate c to fall after the exposure through the coinciding slots 5 and 2G when the slides have been pushed back it must be loosened from the other plates, that is to say, set free; for during the exposure the foremost plate c is firmly held in its position by the pressure of the plates behind and of the follower p. To permit the plate tofall after the exposure, I provide four noses `i adjustable in the walls of the box by means of spring levers t' Figs. 9 to 12, and 16 to 18.- 1 he movement of the levers t' takes place by the displacement of the spring rods 7i arranged in the sides of the box Figs. 11 and 12; when pressure is brought to bear upon thecase li the metallic plates 14 press with their edge against the protruding noses 7L of these rods h and push them a little into the box in op position to the action of the springs 19. Under these circumstances the noses t are first so forced by the projections 7b2 of suitable shape on the rods 7i, toward the interior of the box that they pass in the direction of the arrows 20 indicated Figs. 1G and 19 between the two foremost plates; at the same time the levers t' are turned from the position Figzll to the position Fig. 12, their noses e" forcing back all the plates behind the foremost plate e in the direction of the arrows 21, Fig. 19, so that pressure will no longer be exerted upon the foremost plate; the latter can then drop through the opening 4 and slots 5 and 2G Fig. 1S. The opening and closing of the slides must of course only take place when the two receptacles are joined because light would otherwise enter the receptacles through the slots 5 and 26. For this reason the slides are connected with locking devices so ar ranged that on the two receptacles being joined they will be automatically disengaged. The locking of the two slides may for instance take place in the manner shown in YOO IIO

Figs. 17 and 23. I-Iere the locking springs 27 are on both sides 0f the slides below the guide plates 35 and serve for locking the noses 28 of the slides Figs. 22 and 23. The disengagement of these locking springs takes place by the pins 29- on the guide plates 35 which when the receptacles are joined pass through openings 30 in the opposite plate and press against the springs 27, Figs. 18, and 23,

thereby disengaging the slides.

The displacement of the slides d, d is effected by means of the shaft 23 placed below the slide d in the depositing lcase Band having toothed devices 24 which engage wit-h the teeth provided on the under side of the slide cl. The shaft is operated either through the medium of a crank by hand or through the medium of a mechanism automatically, as hereinafter described. As the slide dcarries away the slide d the two pass simultaneously from the position Fig. 17 to that of Fig. 18, whereupon the plate used drops through the uncovered slot 26 into the depositing case B. Vhen the exposed plate has been conveyed to the depositing case B in the described manner the shaft 23 must be turned back again in order to close the slides,which takes place by hand or automatically by means of the mechanism to be described. Pressure is exerted upon the knob 13, and the two receptacles are taken apart again. Then the devices for locking the slides d d are automatically engaged again, so that these slides will be securelykept in their locked position. As moreover the noses h are also released the noses t', which have liberated the foremost plate e and retained the others, move back and the spring-follower p forces a new plate e against the plate c so that a fresh exposure can take place.

The displacement of the slides d d is by preference effected automatically like the other movements which take place when the depositing case B is joined to the box and removed. Such a device is illustrated in Figs. 9, 10, 16, and 22. With the shaft 23 are connected, on both sides of t-he case B, mechanisms consisting of a kind of crank link 33 which has its fulcrum at 32 and is actuated by the lever 3l. When the case B is put in its place the noses 3ft on the box A force these levers 3l, 3l back, thereby turning the shaft 23 and displacing the slides. The two positions are shown in` Figs. 9 and 10. The return movement of the slides on the removal of the case B takes place by the spring 13, Figs. 16 and 22. The levers are suitably covered over by the plate 14.

If the shaft 23 is to be actuated by hand the levers and the spring 13 connected with it are dispensed with and in lieu thereof it receives asmall crank or turning knob. Of course the turning by hand may be likewise effected only after the slides are disengaged,

that is to say when the two receptacles are joined.

In order that in the opening of the slides no light shall pass through the slots 5 and 26 into the receptacles, a protecting strip l is provided with covers for the opening between the two receptacles as soon as the slides commence their movement.

Vhat I claim is- 1. In an apparatus for exposing and transferring plates, the combination with a changing box A, of a case B for the reception of the plates after exposure, said changing box and oase being detachably connected together, a suitable locking device, slide for closing the adjacent ends of said box and case, and mechanism, such substantially as described, for automatically closing said slides when the box and case are disengaged, for the purpose specified.

2. The combination with the changing-box A of a spring-pressed follower for holding the plates against the transparent front of the box, levers i', having noses -t, adapted to enter between the two foremost plates and press the rearward plates backward, springrods h, 7i, having noses 7i', h', for actuating said levers and a case B connected to the changing-box A and having metallic plates 11, adapted to press the said noses h', when said case is brought into position to receive the exposed plates, substantially as described.

3. The combination with a changing-box A and case B, of slides d and cl, the latter being provided with holes 12, and the former having pins 22, the pivotally connected

levers

31, 33, the latter having fulcrums 32, the shaft 23 having toothed wheels engaging teeth on the slides, and the noses 34E on the changing-box A, substantially as described.

4:. The combination with the changing box A, of the spring-plate p, a cord 7 connected to said plate, an arm 8 to which the cord is led over guide pulleys, a lever arm 10 upon which the arm Sis rigidly mounted, a locking device for the lever arm 10, and a spring operating, and a spring acting in opposition to 'the spring plate 19 to keep the cord 7 taut,

substantially as described.

5. The combination with the changing-box A, of the spring-plate p, the cord or chain 7, the lever 8 to which said cord is led over guidepulleys, a lever-arm 10 upon which the aim 8 is rigidly mounted, a locking device for the lever-arm l0, and a graduated sector over which said lever arm moves, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

AUGUST STEGEMANN. Witnesses:

A. SIEBER, W. HAUPT.

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