US1011009A - Front guide for printing-presses. - Google Patents

Description

L. BAKKE.

FRONT GUIDE FOR PRlNTI-NG PRESSES.

APPLICATION FILED JUNE2,1911v Patented Dec. 5, 1911.

LEoPoLn BAKKE, or CHICAGO, ILLINOIS.

FRONT GUIbE FOR PRINTING-PRESSES.

Specification of Letters Patent.

Application filed June 2, 1911. Serial No. 620,936.

To 1121 whom 'it ma y concern:

Be it known that I, Lnoronn BAKKE, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Front Guides for Printing-Presses, of which-the following is a full, clear, and exact specification.

My invention is concerned with front guides for printing presses, and is designed to produce a simple device of the class described in which the position of the stop plates can be quickly adjusted to any desired degree of nicety, and securely and quickly locked in said adjustment.

To this end, my invention is embodied in a simple construction to be hereinafter described, and the novel combinations pointed out in the annexed claims.

To illustrate my invention, I annex hereto a sheet of drawings, in which the same reference characters are used to designate identical parts in all the figures, of which,-

Figure 1 is a side elevation of a portion of a rotary press having a front guide embodying my invention applied thereto; Fig. 2 is a vertical longitudinal section through the guide on an enlarged scale; Fig. 3 is an end elevation showing the stop plate; Fig. 4 is a section on the line A-A of Fig. 2, looking to the left; Fig. 5 is a similar view looking to the right; and Fig. 6 is a top plan view looking down on the adjusting mechanism.

\Vhile my invention may be used with any sort of a printingpress, I have shown it as applied to a rotary press in which the guide is mounted on the rock shaft 10 having the arm 11 rocked by the cam 12 to remove the guide from the path of the paper 13 when necessary. The supporting member of the guide consists of a sleeve 14 adapted to fit on the rock shaft 10, and which is split through at least one end and provided with lugs 15 and 16 which are adapted to be drawn together by the thumb screw 17 so as to clamp the sleeve in any desired position on the rock shaft 10. This clamping sleeve has secured thereon, and preferably formed integral therewith and at right angles thereto, the sleeve 18, which is closed at one end except for the aperture 19, through which the rod 20 slides. This rod has secured thereon, preferably at its outer end, the stop plate 21, which may be of any desired form, and is conveniently held in place by the screw 22 threaded into the end of the rod so as to fastenthe plate in place, it being prevented from turning on the rod by reason of the squared end thereoffitting in the correspondingly square aperture in the plate. The sleeve 18 is provided with apertures 23 and 24, in which the pin 25 passed through the rod is adapted to reciprocate as may be necessary in threadjustinent of the position of the rod, while at the same time preventing the rod from turning or rotating in the sleeve. The other end of the rod is threaded and passes freely through the non-threaded aperture 26 in Patented.- Dec. 5, 1911.

the cap 27 which is screwed on the end of the sleeve to close that end. The cap 27 has a plurality of equidistant apertures 28 therein, which are adapted to cotiperate with the pin or projection 29 extending from the disk 30 which is threaded on the end of the rod 20.

The operation of my improved guide will be readily apparent: To hold the disk 30 securely against the face of the cap 27 and prevent any possible unintentional displacement of the position of the disk 30, I place the helically-coiled expanding spring 31 in the sleeve 18, one end of it abutting against the pin 25 and the other'against the inner surface of the cap 27, so that the disk 30. is held firmly in the desired adjustment by the engagement of the pin or lug 29 with one of the recesses 28. Supposing that the threaded end of the rod 20 has twenty-four threads to the inch and there are three of the recesses 28, each time that the disk 30 will be adjusted one point or 1/72 of an inch. Two complete turns of the disk 30 will give an adjustment of one nonpareil, or 1/12 of an inch, While four complete turns will give an adjustment of one pica, or 1/6 of an inch. When the first sheet is run through, and it is found that the guides need adjustment, the amount of the adjustment needed can be estimated from the impression and all that is necessary is to pull the disk 30 outward against the resistance of the spring 31 until the pin or lug 29 is disengaged from the recess 28, when it can be turned as far as may be necessary, the passing of the pin 29 from one recess 28 to the next one indicating the adjustment of one point, and the turning of the disk through 360 giving an adjustment of three points, and so on, the milled surface of the disk being provided with the mark 32 and the cap 27 being provided with the mark 33, so that every time a complete rotation of the disk 30 is made that fact will be indicated by the coincidenceof the marks 32 and 33. Of course, it will be understood that any markings indicating the nature and amount of the adjustment that may be desiredcan be provided.

While I have shown and described my invention as embodied in the form which I at present consider best adapted to carry out its purposes, it will be understood that it is capable of modifications. and that I do not desire to be limited in the interpretation of the following claims except as may be necessitated by the state of the prior art.

What I claim as new, and desire to secure by Letters Patent of the United States. is:

1. In a front guide for printing presses. the combination with a guide-supporting member, of a rod movable longitudinally thereon. a stop plate carried by the rod, 0 spring for holding the rod in its advanced position. mechanism for adjusting the posi tion of the rod relative to the guide-supporting member, and means for locking said adjusting mechanism in any position to which it may be adjusted to prevent any accidental change of the adjustment, said means being held in action by the spring the tension on the spring.

.2. In a front guide for printing presses. the combination with a sleeve. of a mounted to slide. but not rotate therein. and threaded at one end. a stop plate secured on the other end. a. disk threaded on the rod outside of the sleeve. graduated engaging means on the com-ting surfares of the sleeve and disk to prevent any relative angular movement of said surfaces while they are engaged. and a pring in the sleeve abutting against one end thereof and against the rod I l l l 3. In a front guide for printing presses, the combination with a sleeve, a cap closing one end thereof, a rod mounted to slide freely through said sleeve and cap and threaded at the cap end, a disk threaded on the rod, graduated engaging means on the coacting surfaces of the cap and disk, and a spring in the sleeve abutting against one end thereof and against the rod to hold said coacting surfaces yieldingly in engagement.

4:. In a front guide for printing presses, the combination with a sleeve having a longitudinal slot therein, of a cap secured on one end thereof. a rod mounted to slide freely through the sleeve and cap threaded on the cap end. a stop plate on the other end,

a disk threaded on the rod adjacent the cap,

eqnidistant'recesses in the cap, a pin on the disk cooperating with the recesses, 21. pin carried by the rod cooperating with the longitudinal slot in the sleeve, and a spring in the sleeve surrounding the 'rod and con tacting with the cap at one end and the pin at the other end, substantially as and for the purpose described.

5. In a front guide for printing presses, the combination with a. guidesupporting member, of a rod movable longitudinally thereon. a stop plate carried by the rod, a

spring for holding the rod in its advanced position, micrometer mechanism for adjustand being releasable by merely mcreasmg ing the position of the rod relative to the guide-supporting member graduated so that the extent. of the ad ns-tment can be accurod i rately determined. and means for locking said adjusting merhanisn'i in any position to hold said engaging means in engagement Q to which it may be adiusted to prevent any accidental change of the adjustment.

In witness whereof. I have hereunto set my hand and aflixed my seal. thi 26th day of May, A. I). 1911.

LICOIOLD BAKKE.

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

Washington, D. G.

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