US1139768A

US1139768A - Printing-frame.

Info

Publication number: US1139768A
Application number: US61709011A
Authority: US
Inventors: Walfred Johnson
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-03-27
Filing date: 1911-03-27
Publication date: 1915-05-18
Anticipated expiration: 1932-05-18

Description

W. JOHNSON.

PRINTING FRAME.

APPLICATION FILED MAR. 21, 1911. 1,139,768. Patented May 18, 1915.

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PRINTING FRAME.

APPLICATION FILED MAR.21, 1911.

Patented May 18, 1915.

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PRINTING FRAME.

APPLICATION r1121) MAR.27, 1911.

1 ,139,768, 1 Patented May18, 1915.

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WALFRED JOHNSON, OF MILWAUKEE, WISCONSIN.

PRINTING-FRAME.

Specification of Letters Patent.

Patented May 18, 1915.

Application filed March 27, 1911. Serial No. 617,090.

To all whom it may concern:

means whereby a set of hinged press boards may be employed which can be lifted either separately or as one member. Also to provide means whereby the card or printing paper may be margined in any desired manner and the width of the upper and lower margins varied to suit requirements, the margin devices being also serviceable in holding the card or printing paper in position on the negative preparatory to the application of the press boards to its upper surface.

My invention also has for its object, the improvement of the printing frame the purpose of which will fully appear from the description.

In the following description, reference is bad to the accompanying drawings, in which.

Figure 1 is a rear view of a printing frame embodying my invention. Fig. 2 is a sectional view taken on line 00-00 of Fig. 1. Fig. 3 is a front view of the device with a ground glass slide in position for use, the slide being partially broken away. Fig. 4 is a cross section drawn on lines zz of Fig. 1, and Fig. 5 is a rear view with the press boards in releasing position, and with one corner of the impression card or sheet turned baokwardly to more clearly expose the margin frame.

Like parts are identified by the same reference characters throughout the several views. v

The bars of the main frame 1 are provided with shoulders 2 to receive the negative supporting glass 3 in the usual manner.

Said bars are provided with grooves 4 in front of the glass 3, which grooves are open at one end of the frame to permit the insertion of a ground glass slide 6, said grooves being also adapted to permit the substitution for this slide of a dodging or vignetting card.

An auxiliary frame 10 is pivoted to the side bars of the main frame at 11. This auxiliary frame is formed of thin metal, and the inner side bars are each provided with an inturned flange 18. These flanges support the press boards 11 and 15, which are formed with portions overlapping the flanges 13 whereby when the frame 10 is lifted and swung to the position in which it is illustrated in Fig. 5, the press boards will be carried with it, leaving the impression card or sheet 16 wholly exposed. The press boards are preferably surfaced with sheet metal backings 18, provided with strengthening ribs 19 and interlocking hinge members 20 adapted to receive a suitable pintle 21, whereby the

boards

14 and 15 are connected with each other by a hinged joint. Clamping members 22 are pivotally secured at 23 to the respective boards, and are adapted to engage underneath suitable ears 24, the corners 25 of which are downturned to prevent, an accidental release of the clamping members. The ears 2% project from the upper margins of the side bars of the auxiliary frame 10.

When the auxiliary frame 10 is in position for use, as shown in Fig. 1, the end op posite the pivot pins 11, is held down by a hasp 27 connected with the main frame. The extremity of the hasp above the engaging lip 28 is turned outwardly to form a guide lip 29, said lip being angularly positioned so that the hasp will automatically spring outwardly and allow the auxiliary frame to move downwardly to position of use, when such frame strikes against lip 29.

A margin frame 35, composed of thin metal and having a sight opening of the re quired size for the pictures to be printed, is mounted upon the main frame 1, between the main frame bars and the impression sheet 16, and is provided with a downturned lip 36, engaging that end of the frame at which the hasp 27 is located, whereby said hasp being of resilient material, will assist inholding the margin frame in any position in which it may be adjusted. Said margin frame is provided with a slot 37 through which an elbowed latch 39 projects, said latch being swiveled in the main frame 1 preferably directly in the rear of the hasp 27, so that when the latch 39 is in the position shown in Fig. 2, it will prevent the hasp 27 from swinging inwardly beyond the point where it can be forced backwardly by the frame 10 in passing the catch 28. It

will, of course, be understood that the latch 39 will be swung to a position at right angles to that illustrated in Fig. 2, in order to permit a removal of the margin frame 3". The opposite end of the margin frame 35 is'engagged under a similar swiveled latch d1.

The slot 37 not only permits the latch 39 to pass through it, but it also permits a lateral adjustment of the margin frame, whereby the relative size of the upper and lower margins to be left white on the impression sheet 16, may be varied at pleasure. The slotted end of the margin frame (which may be termed the front end), is provided with an upturned gage lip at as, preferably struck up from the material composing the frame. Said frame is also provided with gage lips 45 and L6 formed by turning a portion of the material composing the frame, backwardly, and rolling the extremity upwardly and forwardly, as clearly shown at L7 in Fig. 2. These lips 4-5 and 46 and the upturned flange 4-3, assist in adjusting the impression sheet in the proper position.

In use, the margin frame 35 being first adjusted over the negative, the impression sheet is adjusted thereto with its front marunder the lips l5 and $6, and one side margin in contact with flange 43. The impression sheet being in position, the auxiliary frame 10 is swung forwardly and downwardly upon the impression sheet until engaged by the hasp 27, after which the printing will be done in the usual manner. F or quick exposures, the auxiliary frame 10 will be employed for the insertion and removal of the impression sheets. For prolonged exposures, the

press boards

14 and 15 may be raised from time to time to examine the impression sheet in the usual manner. The auxiliary frame 10 will also be found useful to facilitate adjusting the negative and, in fact, for all purposes except where it is merely desired to examine the sheet during the process of printing.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A printing apparatus, comprising a main frame, an auxiliary frame pivoted to the main frame near one end, a set of press boards mounted in the auxiliary frame, independent connections between each of the press boards and the auxiliary frame, adapt ed to permit each press board to be lifted relatively to the auxiliary frame and inde pendently of the other press board, and

Copies of this patent may be obtained for five cents each,

means for detachably securing the frames together at the end opposite the pivoted end.

2. A printing apparatus, comprising a main frame, an auxiliary frame pivoted to the main frame near one end, a set of press boards mounted in the auxiliary frame, and a hasp for detachably securing the frames together at the end opposite the pivoted end, said auxiliary frame being provided with resilient clamping members for the press boards and having retaining ears for said clamping members, provided with downturned corners.

3. A printing apparatus, comprising a main frame, an auxiliary frame pivoted to the main frame near one end, a set of press boards mounted in the auxiliary frame, and a hasp for detachably securing the frames together at the end opposite the pivoted end, together with a margin former pro vided with slot and comprising a thin open metal frame, adj ustably mounted on the main frame between it and the auxiliary frame and press boards and swiveled latches for holding the margin former in position, one of said latches extending through the slot in the margin former.

4. A printing apparatus, comprising a main frame, an auxiliary frame pivoted to the main frame near one end, a set of press boards mounted in the auxiliary frame, and a hasp for detachably securing the frames together at the end opposite the pivoted end, together with a margin former, comprising a thin open metal frame, adjustably mounted on the main frame between it and the auxiliary frame and press boards, said margin former having gage members at one end and at one side adj accnt to such end.

5. A printing apparatus, comprising a main frame, an auxiliary frame, having angle metal side bars with horizontal flanges pivoted to the main frame near one end, a set of press boards mounted in the auxiliary frame and having portions overlapping the horizontal flanges of the side bars, and a hasp for detachably securing the frames together at the end opposite the pivoted end, said main frame being shouldered to receive a negative supporting plate, and channeled in front of the shoulder to receive a slide.

In testimony whereof I affix my signature in the presence of two witnesses.

VVALFRE JOHNSON. lVitnesses Lnvnnnr'r C. lVnnnLnn, .l. D. Benzene.

by addressing the Commissioner of Patents.

Washington, D. C.