US1457578A - Printing frame - Google Patents

Description

June 5, 1923 1,457,578 B. J. KOCH PRINTING FRAME Filed Jan.,-18 1921 2 SheetsSheet 1 a 8 9 7 INVENTDR Bernard Vac/z 1,, W/M 2 Wm June 5, 1923. 1,457,578

. B. J. KOCH PRINTING FRAME Filed Jan. 18, 1921 2 Sheets-Sheet 2 Has.

INVENTUR 7381-12472?! KM 5, WM la WW Patented June 5, 1923.

BERNARD J'. KOCH, OF PITTSBURGH, PENNSYLVANIA.

PRINTING FRAME.

Application filed January 18, 1921. Serial N0. 438,076.

T 0 all whom it may concern Be it known that I, BERNARD J. KOCH, a citizen of the United States, and resident of Pittsbur h, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in a Printing Frame, of which the following is a specification.

This invention relates to a photographic printing frame.

The object of the invention is to prov de stamping mechanism for use in conjunction with a printing frame which comprises automatic inking means of such form as to avoid likelihood of accidentally rotating the rollers of a progressive stamping element during inking of the same; and likewise to render the inking means so adjustable as to insure a complete and uniform inking of the operative face of the stamp.

In the accompanying drawings Fig. 1 is a plan view of a printing frame comprising the novel features of the present invention; Fig. 2 is a side elevation of the same; illustrating various positions of the parts by means of dotted lines; Fig. 3 is a vertical section of the holder for the inking pad of the stamp inking mechanism illustrating its adjustability for securing a complete and uniform inking of the stamp; Fig. 4 is a vertical sectional detail of the control spring for the cover operating handle; Fig. 5 is a fragmentary side elevation showing'in detail means for aligning a film and printing paper; Fig. 6 is a cross sectional view of the same on the line 66 Fig. 5; Fig. 7 is a s1de elevation showing the stamp and its mounting in detail; and Fig. 8 is a front elevation of the same.

The device as a whole is shown as mount ed on a frame or board 1 which serves as the top or cover of a lighting box such as is in common use. In this board is set a window 2 for admitting light to the film and printing paper during the operation of printing. The printing cover 3 for pressing the work against the glass of window 2 is formed, as is usual,,in 'two hinged portions 4. and 5, to permit it to be raised from the work or folded down in position to press upon it. For raising and lowering the printing cover 3 an operating handle 6 is provided. At its rearward extremity this handle has a transversely extending portion 7 hinged to the frame 1. 'A coiled spring 8 current through the lamps.

may be placed in connection with the portion 7 by means of a hook 9 so that the spring-tends to normally maintain the cover in its lower or operative position. The handle 6 is also provided with a resilient. arm 10 which may be engaged or disengaged with an eye 11 on the cover 3, so that movement of the handle may or may not effect the osition of the cover as may be desired.

cans are provided for aligning a film on the frame in proper position for printing.

and extending upwardly therebeyond. This.

extending portion is provided with a film receiving notch'16,'and with a wing 17 at right angles to the body of the portion for also engaging the film. The bend 150f each clip 13 lies against the raised border 18, surrounding the printing window 2 of the frame. V 8

' In positioning a film for printing, it is slipped under guard members 19, which project along the slides of window 2; and the. clips 13 are slid along rods 12 until the notches 16 receive the edge of the film.

On the forward portion of the border 18 surrounding the printing window is a clip 20, provided with a coiled spring 21 for holding a bordering mat for the print in position.

The frame is also provided with means for automatically making and breaking the 7 Such means comprise a contact button 22 for the lighting circuit 23, together with means for de pressing and releasing the contact button under the proper conditions.

For the latter purpose a bracket 24, provided with horns 25 and 26,- is rotatably mounted on the frame 1. When the operating handle '6 of the printing cover 3 is low ered to bring the cover into position on window 2, it strikes the horn 25 of the latch bracket, rotating the bracket inwardly. This normal movement of operating handle 3 does not, however, serve to depress the contact button 22 suiliciently to complete the lighting circuit for the light box. A further, manually produced, rotation of bracket 2st causes the handle to be depressed to the further necessary extent, and also causes the horn 26 of the bracket to engage a horn 27 on the extremity of the handle 6. In this position the printing cover 3 presses firmly upon the film and printing paper in win dow 2.

When the film and printing paper have been exposed to the light for the desired length of time, the bracket 2% is rotated outwardly to release handle 6. Because of the slight lost motion provided for, the release of the operating handle releases contact button 22 and breaks the lighting circuit before the handle is raised sufficiently to lift the forward section of the printing cover from position. This fact assures the avoidance of any blurring of the print because of a premature lifting of the printing cover.

The frame isalso proviced with means whereby the actuation of operating handle 6 causes an appropriate serial number, date, or the like to be stamped upon the back of each print as it is made.

For this purpose a stamp 28, preferably of the progressive type, is supported by an arm 29 secured to the operating handle 6. The rearward section 5 of the printing cover 3 is provided with an aperture 30, the stamp 28 being so positioned that the lowering of the handle 6 causes the stamp to pass through aperture 30 and to press against the back of the print in window 2.

As illustrated in detail in Figs. 7 and 8 of the drawings, the stamp used is of the progressive type, and is rotatably mounted on the arm 29. In order that the stamp may be held rigidly for the stamping operation and may also be released and rotated for inspection of its stamping face, a teat or pin 31 is provided on the upper side of the stamp and is arranged to engage in an aperture in a suitable flat spring member 32 securedto the operating handle 6.

For inking stamps employed in a similar connection inking rollers have previously been employed. Such rollers are open to the objection that they often fail to completely and evenly ink the operative face of the stamp. They are also open to the objection that there is likelihood that they may rotate the barrels of a progressive stamp, thus causing an undesired serial number or date to be impressed upon the back of the print.

The present device is provided with stamp inking means so arranged that an inking pad is brought directly against the operative face of the stamp, thus avoiding an undesired rotation of the barrels of the stamp. The support for the inking pad is also so arranged that the position of the pad may be adjusted to insure full and even contact over the entire operative surface of the stamp.

The supporting means for the inking pad comprise a block 33 which is mounted on the board 1, and the standard rigidly secured to this block. Rotatably secured in standard 34: is an angularly formed plate 85 which carries the inking pad 36. An operating plate 37 is arranged with its rearward surface lying against a roll 38 in the standard 3i, and is provided with a tongue 39 projecting through a slot in the plate or arm 35 which carries the inking pad 36. The upper portion 40 of the operating arm or plate 3'? extends forwardly in such position as to lie within the path of movementof the spring arm 32 with which the stamp 28 engages. As the operating handle 6 is raised, arm 32 strikes the forward portion of the operating arm or plate and causes the arm or plate 35 to be rotated to bring the inking pad 36 into contact with the 0perative face of the stamp 28. This inking position is. shown in dotted lines in Fig. 2 of the drawings.

.lt should be noted that the forwardly projecting portion of the operating arm or plate 37 is not straight, but that its forward and rearward sections are at an angle to each other so that the arm. 32 slips backwardly of the operating arm or plate after its first contact therewith, thus producing some lost motion and causing the pad 36 to make proper contact with the face of the stamp. It should be further noted that both the pad supporting arm or plate 34 and the operating arm or plate 37 are of flexible metal, so that their exact shape may be at any time regulated to produce the most desirable results in inking the stamp 28.

As the entire inking mechanism is carried by the adjustable block 33, it will be seen that it may readily be adjusted to make a completeand even contact with the operative face of the stamp 28.

In the use of the printing frame, the operating handle 6 is raised, and hook 9 disengaged from spring 8 so that the handle and printing. cover may remain in this position during insertion of a film. The film is slipped under guard 19 and clips 13 are caused to engage the extending portions of the film. Printing paper is placed on the film, and a suitable mask may be, held in proper position by means of spring. clip 20. During the initial raising of operating handle 6 the stamp 28 has been inked by contact with the pad 36.

As operating handle 6 is lowered, the printing cover 3 is brought into position to press upon the film and printing. paper in window 2. Simultaneously the stamp 28, passing through apertures 30 in the section 5 of the cover, stamps the desired numeral or date on the back of the printing paper. Also the operating handle 3 is engaged by latch member 24, and upon rearward rotation of the latch member is caused'to contact button 22 for completing the lighting circuit for the light box to which the frame is applied.

As previously explained, upward movement of the handle breaks the lighting cirouit, raises the printing cover, and inks the stamp for a further printing operation.

As the device illustrated and described is susceptible of a number of modifications without departing from the spirit of the invention, the scope of the invention is to be restricted only by the limitations contained in the claims appended hereto.

IVhat I claim is:

1. In a printing frame a printing cover, an operating handle therefor, stamping means rotatable as a whole on said operating handle, and a resilient member arranged to engage said stamping means to prevent rotation thereof.

2. In a printing frame a printing cover, an operating handle therefor, stamping means rotatable as a whole on said operating handle, a teat on said stamping means, and a flat spring having an aperture arranged to engage-said teat to prevent rotation of the stamping means.

3. In a printing frame a printing cover, an

operating handle therefor, stamping means rotatable as a whole on said operating handle, a resilient member arranged to engage said stamping means to prevent rotation thereof, a housing on the printing frame, an inking ad pivotally mounted in said housing, and a contact arm extending from said inking pad and arranged to be contacted by said resilient member during upward'movement of said operating handle to swing said inking pad into contact with said stamping 7 means.

4:. In a printing frame a printing cover,

In witness whereof, I hereunto set my.

hand.

BERNARD J. KOCH.

Witnesses:

FLORENCE F. SCHWARTZ, GRETTA W. ALSTON.

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