US 544231 A
Description (OCR text may contain errors)
A KRAH LETTER FILE.
No. 544,231. Patented Aug. 6,1895.
UNITED STATES 1 PATENT FEICE.
ARMIN KRH, OF BERLIN, GERMANY.
a"EECI'.i. `]IC./.1'l1(v)1\T` forming part of Letters Patent No. 544,231, dated August 6, 1895.
Application tiled March 18, 1895.
.To all whom t may concern.-
Beit known that I, ARMIN KRAH, a citizen of the German Empire, residing at Berlin, in the Kingdom of Prussia-,German Empire, have invented certain new and useful Improvements in Letter-Files; and I do hereby de- Clare that the following is a full, clear, and eX- act description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.
l My invention relates to letter-tiles and the ike.
A letter file constructed according to this invention is distinguished by great sim plicity.
In the accompanying drawings, Figure l shows the back ot' an improved letter-tile seen from the interior. Fig. 2 is a section on `the line fr of Fig. 1, showing the covers in two positions. Fig. 3 shows to a larger scale parts of Fig. 1 without the wires. Fig.4 is a side view of Fig. 3. Fig. 5 represents an elevation of a modified form, and Fig. 6 is a transverse section through Fig. 5 to a larger scale. l Y
The letter-file consists, substantially, of a wooden back h, to the two sides of which are fastened the covers m m of the file, either by strips of leather or by other means, so that these covers, as indicated in Fig. 2, can be opened and closed like those of a book. To the interior face oi the wooden back is secured longitudinally a plate g, bent upward a little in the middle at g', Figs. 3 and 4, where it is provided with two 'double channels t' of sheet metal. These channels z' receive two round iron or steel wires d and e, which are arranged close together inv the longitudinal' direction of the back. These wires d and e are furnished at their ends with rectangular bends c c, which are again united to form a rod c c, Fig. 1. Y It will be seen that the wires c c d and c c e, forming a whole, can'be easily turned in the hinge-plate t', in the manner well known, with the wires of the other letter-files. The two terminal positions ot' these wires are represented in Fig. 2 by full and dotted lines.
Each of the two longitudinal wires o c carries two wires a and b, bent to an are ot' acir- Serial No. 542,235. (No model.)
I cle and made ot' such length thatwhen the tile is closed the ends of the wires a and b will reach close to the front of the opposite wire o c. These wires are in front somewhat pointed, so that sheets ot' paper which have previously been perforated at the corresponding places may be slid upon the wires, as is customary with letter-files.
In order that in the closed position indicatedin Fig. l and in dotted lines in Fig. 2 the wires a c and b c shall remain in their position, I provide spring-plates ss upon the plate g, Fig. 1, which bear against the lower part of the bends'c c, thereby holding these parts more or less firmly. For enabling this to take place better still, the plates s s are each furnished with two grooves s s', which are so formed therein that the parts c c of the wire will take into those grooves when the whole device is in the closed position-that is to say, when the papers between c c on the wires a b are to be held together.
Fig. 3 shows one of the plates s with the two grooves s' s', andalso the hinge-plate il upon the plate g g', the two wires de being, however, supposed to have been removed in order to show the details better.
Fig. 4 is aside elevation showing the springplate S.
The inode of operation of these parts will be readily understood. l The papers provided with four holes corresponding to the four wires va b are slid upon'the latter after the tile hasbeen opened and the wires have been bent apart by hand. This having been effected, the tile is closedby simply moving the two covers toward each other, whereupon the inner sides of these covers will move the wires o' c toward the middle'untilthe parts c c engage with the grooves s s. If it is desired to take one or more papers from the file, I simply pass the hand between such papers and push them gently asunder until thev parts c c slide from the grooves s s and pass to the position indicated in full lines in Fig. 2, so that I may now easily remove the papers by slipping them from the wires a b and also put them back again.
Figs. 5 and 6 show a modification.
arrangement no covers are used, th'e'r'e being only a wooden back h. Covers may, however,
if desired, be provided on this back, as at m mv in Fig. l. As this modified device illustrated in Figs. 5 and 6 is chietlydesigned for use as a newspaper le, such c'overs m m are mostly superliuous.
A further diierence from the arrangement shown in Figs. 1 to 4 consists in that the wires d e are fixed in the two platess s, and that, moreover, instead of the wires c c use is made of sheet-metal strips C, which are bent to the forni of tubes at their lower ends and also at their upper ends a b. The four Wires b b" are now all placed on one side-for instance, on the right-hand side, Fig. 6-and are riveted in the tube D or otherwise fixed. The points of 'these four wires b penetrate partially into four holes a in the tube a on the left-hand side, as clearly indicated in Fig. 6 by dotted lines. The plates s s are provided with depressions s s in order that the parts c c" may be kept in the closed position. This arrangement is very convenient if it is desired to clamp a newspaper or but few other sheets between ct and b. In this case the sheets need not be previously perforated, being held between the opened plates, which are then allowed to close, the points then pen etrating through the sheets into the holes a.
The back h may be furnished with a haii dle h', Fig. 5, for enabling the tile to be conveniently held in the hand.
l. In a paper file, the combination with a back, of two sheet retaining clips hinged to said back, and a spring plate secured to said back at each end of said hinged clips, said spring plates having grooves adapted to be engaged by said hinged clips and operating to hold said clips closed, substantially as described. v
2. In a paper lile, the combination with the back h and the leaves m, m, hinged thereto, of the plate g secured to said back and provided with two tubular channels z', wires d, e, seated in said channels and provided at their opposite ends with lateral extensions c, c, rods c', c', connecting the outerends of said extensions, curved fingers a, l), carried by said rods, and spring plates s, s, secured to said back and provided with recesses s', s', adapted to be engaged by the extensions c, c, substantially as described.
In witness whereofI have hereunto set my hand, at Berlin, this 22d day of January, 1805.
Titnessesz J. LEMAN, WM. HAUPT.