US553743A

US553743A - Tenberg

Info

Publication number: US553743A
Authority: US
Publication date: 1896-01-28
Anticipated expiration: 1913-01-28

Description

(No Model.)

P. A. WATTENBERG.

DARK ROOM.

No. 553,743. Patented Jan. 28,1896.

W/ TNSSES:

A TTOHNE YS.

UNITED STATES PATENT EEICE.

FERDINAND A. IVATTENBERG, OF NRWT YORK, N. Y.

DARK-Room.

SPECIFICATION forming part of Letters Patent No. 553,748, dated January 28, 1896.

Application tiled April 20, 1895-. Serial No. 546,546. (No model.)

To all whom it may concer/t:

Beit known that I, FERDINAND A. WAT- TENBERG, of'New York city, in the county and State of New York, have invented a new and Improved Dark-Room, ofjv'hich the following is a full, clear, and exact description.

The invention relates to photography; and its object is to provide a new and improved portable dark room which is simple and durable in construction, readily folded up for convenient transportation and storage, and when set up enables the user to develop sensitive plates, fill holders and cameras, and do such other work as is required to be done in a dark-room.

The invention consists principally of a portable dark-room made of iiexible material, and formed in its bottom with pipes or tubes for permitting air to pass to the inside of the dark-room.

The invention also consists of certain parts and details and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this speciiieation, in which similar characters of reference indicate corresponding parte in all the figures.

Figure 1 is a perspective view of the darkroom with part broken out. Fig. l is a sectional side elevation of part of the dark-room 5 and Fig. 3 is a sectional plan view of the same, on the line 3 3 of Fig. 2, with part removed.

The improved portable dark-room is provided with a bottom A, made of a flexible material, such as rubber of a heavy quality, the bottom terminating in the end piece B, in which is set a ruby glass C to light the interior of the dark-room in the usual manner, without permitting white rays of light to pass to the inside. On the top surface of the bot tom A are placed transversely pipes or. tubes D and D, arranged suitable distances apart and preferably of different diameters, as is plainly indicated in the drawings. The outer ends of each pipe or tube are provided with apertures D2, and similar apertures DS are arranged in the top of the pipes within the portable dark-room to permit air to pass from the outside to the inside of the darkfroom to the exclusion, however, of white light.

In order to hold the pipes or tubes in place,

I cement or otherwise fasten a piece E, of light flexible material, upon the bottom A and over the said pipes D and D, with the sides E extending upwardly from the bottom to connect with the front end B, and also to form a top E2, likewise attached to the front end B. The rear part E3 of this flexible light piece of ma terial is in the form of a hood adapted to receive the upper part of the users body, the said hood being provided with a band or drawstring F to securely fasten the mouth of the hood around the Wearers body to exclude white light from the interior of the darkroom.

In order to hold the front end B in a vertical position while using the portablev darkroom, I provide the outermost pipe D with posts G hinged to the said pipes, and adapted to extend up in the corners between the sides F] and end B. Braces H, pivoted on the outermost pipe D, are adapted to hook upon the posts G to securely hold the same in an upright position to maintain the portable dark-room in an extended position, as plainly indicated in Fig. l.

Now it will be seen that when the braces Il are disengaged from the posts Gthe latter can be folded down upon the pipe D, and then the whole top and sides, together with the end B, can be readily collapsed and rolled up on the bottom A to make a small bundle of the entire dark-room.

It is understood that the material E is formed with apertures registering with the apertures D3 in the pipes D and D'Ito permit the air to pass to the inside of the darkroom, and I prefer to use different-sized pipes, so that in case a tray is set on the said pipes then the smaller pipes D are not covered at their apertures D3, and consequently air can pass to the inside of the dark-room even if some of the apertures of the larger pipes D are covered by the tray.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patentl. A portable dark-room, comprising a bottom made of heavy, flexible material, terminating in an end containing a translucent pane of glass, a hood made of a light, iiexible material and having its lower part attached to the said bottom and its sides and top to the said end, and air-tubes interposed between IOO the bottom and the said light material, the said air-tubes being provided at the outside and inside of the hood with apertures for the passage of air, substantially as shown and described.

2. A portable darkroom, comprising a bottom made of heavy, i'leXible material, termi nating in au end contain ing a translucent pane of glass, a hood made of a light, flexible material and having its lower part attached to the said bottom, and its sides and top to the said end, air-tubes interposed between the bottom and the said light material, the said air-tubes being provided at the outside and inside of the hood with apertures for the passage of air, and posts held on one of the said pipes, and adapted to support the said end in a vertical position, substantially as shown and described.

3. A portable darli-room, comprising a Vboitom made of heavy, i'leXible material, terminating in an end containing a trfi'nsluceut pane of glass, a hood made of a light, flexible material and having its lower part attached to the said bottom, and its sides and top to the said end, vair-tubes interposed between the bottom and the said light material, the said air-tubes being provided at the outside and inside of the hood with apertures for the passage of air, posts held on one of the said pipes, and adapted to support the said end in a Yertical position, and braces held on the said pipe and engaging the said posts, substantially as shown and described.

lVitnesses: I

THEO. G. llosrnn, C. SEDGWICK.