DE1713867U - ENLARGEMENT DEVICE WITH AUTOMATIC FOCUSING. - Google Patents

Description

PA.533025W!

ium

25 p. 1955

atent department

Brö / Ba

itomatic sofa *

The invention concerns β iah. on an enlargement apparatus with automatic F ο harp in division, deeeen projector head by means of swiveling parallelogram arms and a one-and-a-half divisible arm MuXfβ is attached to a column table connected to the base board · With Kuoksioht on the adjustment of the automatleohen Sharp ine graduation must be calibrated with such enlargers the support sleeve for the parallelogram arms in a certain Height above the Grand Board, this giant depending on the height of the copying board (Papierkaoeette) used is · BIe The correct height division of the sleeve is secured by means of the bolts activated in the column stand · you can see the spanking Copy board heights in such an enlarger, then a corresponding number of holes for the mounting of the security bolt must also be provided in the pillar notative «Pie Muff · itself can also be no oh medium in its rlohtigen height division Clamp ohruben are braced with the Säulenetati ν · The over » The clamping sleeve carrying the parallelogram arms and the projector head is moved to a different height position by longitudinally shifting the released clamping sleeve on the column stand »until the dl · Bolts securing high altitude in the corresponding Sloherangelooh can be introduced.

The installation of a large number of bolt holes in the column » The tripod is unsuitable for production and also affects the stability of the column 2 $ at an altitude in the other with the weight on it Parallelogram arm and the projector head it is cumbersome

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otenfobteilung 25-8.1955

Brö / Bn

and inconvenient, and there is a risk that the equipment will be damaged slips off the column due to its heavy weight and is damaged in the process

According to the invention, these disadvantages are avoided by a device for securing different heights of the clamping sleeve in a Bolssenlooh for a securing bolt and by a lifting and lowering device for the clamping sleeve, which prevents the aerate from falling when the clamping sleeve is released and the locking pin is removed, and also allows the transfer from one height position to the other.

According to the invention, the device for securing different heights of the clamping sleeve consists of a “wipe” the clamping sleeve arranged on the locking bolt rotatable Ring with different lengths and different heights of copying boards Ordered notches for the safety pin · Up to the device aar transfer of the clamping sleeve to different heights and securing the device against abatement, according to the invention, consists of one arranged at the upper end of the column stand Pulley with a cable, one end of which is connected to the Clamping collar is connected, while the other end is in one Part of the parallelogram arm «θeinhangbar 1st ·

Details of the invention are based on the drawing, which selgt an example of execution form, explained in more detail.

According to FIG. 1, the projector head of the enlarger is fastened to the column frame 5 connected to the base board 4 by means of the parallel gram arms 2, 2 and the clamping sleeve 3. Underneath the clamping sleeve 3 there is a rotatable and displaceable ring 6 with several quick notches that can be loosened on the stand column

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August 25, 1955

Brö / Bn

7 »» 7b »7α arranged» which did with on in a hole in the column ! YS incorporated hast bolt 8 interact. The hasty notches 7a »7b, 7o have a veroahleden large distance from the supporting surface 6a of the sealing ring 6, which cooperates with the clamping sleeve 3, in accordance with the use of copy boards of various types provided on the base board 4 *

A pulley 10 is located on the upper linden tree of the column stand 5 attached »but an ax 11 is driven · Sas rope end 11a let rait the clamping sleeve 3 connected »during the rope end 11h by means of a hook 12, for example, in a connection · «· bar 13 weeks. ß. can be attached to parallel drive arms 2 This hanging is only done »if a height adjustment the clamping sleeve 3 is intended to be used for the enlarged operation the rope end 11b remains unhooked "so that the paralleogram arms 2 can be used without hindrance" (Fig.2.)

If the height of the chip hoist 3 is to be adjusted »then the rope end 11b is hooked into the connecting rod 13 by means of the holder 12 (Fig. 1) · 1 into the position according to 91g · 9 the clamping sleeve 3 can be moved along the column stand 5 near the top »whereby the projector head» parallelogram arm · and the socket hang on the rope 11 guided by the pulley 10 and are protected against falling. ο shirt · detent ring 6 can now be readjusted to another Höhenetellong • »by a« others Have notch com interaction is gebraoht β with the safety pin * Naoh lowering the clamping sleeve 3 to Have ring 6 (thirty. 4), the rope end 11b "12 be hung up again »so that the vilification

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August 25, 1955 Bru / Bn

Apparat now with a different distance from its clamping sleeve the grand board 4 usable eats

Both parts of the device result in a simple and convenient one See below for handling height adjustment and height securing of the clamping sleeve 3 · Ee, however, both individual provisions can also be independent. gig from each other and each used for elah * The locking ring securing the altitude can for example be used for relatively simple and light enlarging devices can only be provided »in which case the height adjustment represents oh displacement of the clamping sleeve from Hand done · The lifting and lowering device for the clamping sleeve 3 can on the other hand also without the use of an outer length be used when it comes down to a relatively heavy projector head with its supporting parts at different heights to spend on the column stand »- e» B «when using ver different projection lens focal worlds * without consideration on * how in detail the safeguarding of the altitude is effected «

The Eaetenring to compensate for different copying board heights can also be used with advantage in enlarging devices with an enlarging head guided along the vertical column and automatic focusing by means of a Sohwertkurvt in connection with transfer levers. In this case it was the Kaetenring serve to set different altitudes of the Sohwert-

- Secure ö curves against the baseboard

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Claims (1)

m 533025 * 313/5 fentabteilung 25 · β * 1955 Brö / Bn A η, Ρ ρ r U ο; h e « 1. Magnifying ango apparatus with automatic sharpness adjustment, deaeesa Pro Rector's head by means of a swiveling parallelogram and a sleeve that can be divided into and out of two parts is attached to a column stand connected to the base board the height of the sleeve (3) on the column stand (5) securing pin (8) is a rotatable hing (6) old several Tersohieden long, different copy board heights associated with Eaat notches (7a, 7b _f 7o) for the Sioherungsetift (8) " 2 · Magnifying apparatus according to claim 1, characterized in that a rope pulley (10) with a rope zag is arranged on the upper south of the column stand (5), whereby the one Cable end (Ha) is connected to the sleeve (5) carrying the parallelogram arms (2,2), while the other cable end (11b) is In Let a rope (13) of the parallel gram arms (2, 2) be suspended.