US1148117A - Drying apparatus for photographic prints. - Google Patents

Description

H. T. NEUMAN.

DRYING APPARATUS FOR PHOTOGRAPHIC PRINTS.

APPLICATION FILED SEPT.3. 1914.

1,148, 1 1 7. Patented July 27, 1915.

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HENRY TLNE UM N', or new YonK, N. Y.

DRYING APPARATUS FOR PHOTOGRAPHIC PRINTS.

Specification of Letters Patent. Y

Patented July 27, 1915.

Application filed September 3, 1914. Serial No. 859,954.

- vented a certain new and useful Drying Apparatus for Photographic Prints, of which the following is a specification.

This invention relates to devices for drying photographic prints and its principal object is to provide a simple, inexpensive,

and improved apparatus for this purpose, with which the simultaneous drying of a large quantity of prints may be accomplished rapidly and conveniently, and which will impart to the prints a permanently flat and uniform surface.

Other objects and advantages will hereinafter appear.

In the accompanying drawings, Figure 1 shows a general sectional elevation of the drying apparatus, taken on the line a:zr of Fig. 2. Fig. 2 is a bottom plan view of Fig. 1. Fig. 3 is a fragmentary view showing the upper portion of the apparatus in elevation, with the spring clasp holding the outer edge of the cloth band.

A cylindrical shell 1 of fiber has a top plate 2 of metal secured thereto at one end by means of the edge 2 of the plate being spun so as to embrace and grip forcibly the edge 1 of the shell, and to the opposite end 1 of the shell 1 is secured a similar bottom plate 3 in a similar manner. Said shell is provided with a large number of holes 4: and is thus perforated throughout, in about the manner shown in Fig. 1. The top and bottom plates 2, 3 are likewise provided with holes 5, preferably arranged about as shown in Fig. 2. Flat metal legs 6, preferably three in number, are secured to the bottom 3 at 7 and converge therefrom toward the longitudinal center line of the shell 1, whereat said legs are joined to a collar 8 that is adapted to fit over a gas tip or burner 9 such as is ordinarily used for heating or illuminating. The shell 1 is provided with a band 10, of cloth or other such suitable flexible material, having a Width that is somewhat less than the shell and a length which permits it to be wound several times around the shell.

hen it is desired to dry a quantity of photographic prints the band 10 is first wound around the shell 1 to encircle it once or twice, and then as the winding of the band is continued the moist prints 17 are interposed between the several windings of the band untilthe outer edge 10 is reached. In order to hold the band-edge 10 in place each end of the shell is provided with a clasp 11 which consists of a spiral spring 12 having one end-curl 13 secured to the top or bottomv plate 2, 3 and the other end-curl terminating in the form of a loop 1 1, a portion 15 of which extends along the longitudinal center line of said spring, and another portion 16 thereof is bent around tohold the edge 10. While the band is being wound around the shell the loop-portions 16 of both clasps 11 can be turned aside and thus placed out of the way, and at the completion of the winding said portionsmay be twisted back to the position shown, whereupon the springs 12 pulling on said loop-portions 16 causes them to be drawn forcibly against the bandedge 10 which is thereby effectively maintained in place. The moist photographic prints having been in this manner placed around the shell 1 and being maintained pressingly therearound by the windings of the band 10, the apparatus may be mounted over the burner 9, by slipping the collar 8 over the burner as shown, and the gas flame then lighted. The heat generated by the gas flame passes through the perforations 5 of the bottom 3, into the interior of the shell 1, and out through the perforations of the top 2. The interior of the shell thereby becomes heated and this heat passes through the shellperforations 1 and but partially through the fiber wall of the shell, because this material conducts the heat partially, and it thus warms the layers of the band 10 with the intervening prints 17 effectively, by which means the prints become uniformly and effectively dried. In passing from the interior of the shell through its perforated fiber wall the heat is properly modulated, so that in passing through the prints pressed between the layers of the band the heat, in conjunction with such pressing, afi'ects their drying in a manner that imparts to the prints a permanently Hat and even surface and precludes wrinkling or undue curling thereof. Upon completion of the drying the band 10 may be readily unrolled and the finished prints removed.

It will be evident that the apparatus may be constructed in various sizes to suit the various classes of photographic prints, and

' also that the shell 1 and'band 10 may be proportioned to permit a large quantity of prints to be dried simultaneously. v

Variations may be resorted to within the scope of the invention. Y

Having thus described my invention, I claim 1. An apparatus for drying photographic prints comprising a cylindrical shell, a perforated top and bottom for said shell, means for mounting said shell over a burner to heat its interior, a band adaptable to be wound several times around said shell and to hold the prints interposed between its windings, and means to clasp the outer edge of said band.

2. An apparatus for drying protographic prints comprising a cylindrical fiber shell, a perforated top and bottom for said shell, means for mounting said shell over a burner to heat its interior, a band adaptable to be wound several times around said shell and to hold the prints interposed between its windings, and clasps to hold the outer edge of said band.

3. An apparatus'for drying photographic prints comprising a shell, means secured thereto for mounting it in upright position over a burner to heat its interior, a band adaptable to be wound several times around said shell and to hold the prints interposed between its windings, and means to clasp the outer edge of said band, said clasping means including a spiral spring having a curl thereof fixed to the apparatus and a loop extending from said spring being drawn thereby against the edge of said band.

4. An apparatus for drying photographic prints comprising a shell, a band adaptable to be wound therearound several times and to hold the prints interposed between its windings, and means secured to said shell for mounting it in upright position over a burner for heating its interior.

Signed at the city of New York, in the county of New York, and State of New York, this 1st day of September, A. D. 1914.

HENRY T. NEUMAN.

Witnesses:

CHAS. W. LA R E, B. ROMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, E C.

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