US638072A - Printer's lock-up and furniture. - Google Patents

Description

Patented Nov. 28, |899. W. G. SLAUSUN.

PRINTERS LOCK-UP AND FURNITURE.

(Application md Mar. 15, 1899) No Model.)

Limb! "UHU Illu IW im nvm/V701? Attorney WITNESS/5S NITED STATES PATENT FFICE.

WILLIAM Gr. SLAUSON, OF OLEAN, NEW YORK;

PRINTERS LOCK-UP AND FURNITURE.

SPECIFICATION forming part ef Letters Patent No. 638,072, dated November 28, 1899.

Application filed March 15 1899.

To @ZZ ich/0in it may concern.'`

Be it known -that I, WILLIAM G. SLAUsoN, a citizen of the United States, residing at Olean, in the county of Qattaraugus and State of New York, have invented certain new and useful Improvements in Printers Lock-Ups and Furniture, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to telescopic lockups for printers use.

The object of the invention is to produce a lock-u p device which may be quickly applied to the bed of a cylinderpress to lock up a small chase thereon or a chase smaller than the press-bed.

The present invention is also particularly adapted for use in locking up a small form in a large chase without entirely filling the chase with furniture.

Usually when a small chase with printingform in it is placed on a press-bed and does not entirely fill it the remaining space is :filled out either by an empty chase or with blocks of Wood or metal or With strips of Wooden furniture,which` requires considerable time. Moreover, the material used for filling these spaces is liable to spring up in locking it up on account of unevenness or too much pressure, causing loss of time, and often it Works up While the press is running, blacking or smutting the sheets of paper, causing not only loss of time, but Waste of material. Further, the material usually used has to be justied or made to ll the opening exactly or with so much fullness that when a locking device, which is either a quoin or the clamp of the press worked with a wrench, is applied the filling material and chase will be firmly locked and held in place. Then some time is consumed in applying the quoin or tightening the screws of the clamp. Similarly when a small form of type or other printing material is placed in a large chase the chase is filled out With Wooden or metallic furniture, practically filling the space in the chase not occupied by the form, and then quoins have to be applied, after the filling has been justified, in order to lock the form in the chase securely for lifting and printing. Wooden furniture is liable to shrinking and swelling as well as to wear, which make it uneven Serial No. 709,149. (No model.)

and uncertain in a lock-up or form. When a form is left on the bed of a press overnight or a chase is set away for future use which has Wooden furniture in it, the swelling is liable to make the lock-up too tight and spring the form or lock-up, and likewise the shrinking of the wooden material is liable to loosen the lock-up and cause the form to fall out of the chase into pi or, on a press-bed, to cause printing out of register or pulling of type from the form. Metallic blocks are heavy and metallic furniture both heavy and expensive and considerable time is used in filling, justifying, and locking a form with it, and the labor of transporting heavy forms is not inconsiderable. The weight of heavy forms filled with heavy furniture requires added power and expense of running the press. Sometimes an empty chase is used to ll an open space in a large chase With a small form in it or to ll a space between a small chase and the clamps or sides of a pressbed; but in the use of a chase for filling space justifying is again necessary, and as chases are usually made for use to contain printingforms they are seldom true on the outside and other material has to be used with them in order to secure straight edges and secure bearing surfaces. The telescopic lock up which I have devised overcomes these objections in a great measure and, combining, as it does, a furniture filling any space without requiring justification and a quick quoin for locking, it saves a large share of the time usually consumed in locking up small forms in large chases or small chases on large pressbeds. Besides, my lock-up is more reliable than the ordinary furniture.

Figure l is a plan of a lock-up according to this invention. Fig. 2 is a plan of the same in extended position. Fig. 3' is a broken plan of the lock-up, showing eXtension-quoin; and Fig. 4 is a plan of the snail by which the quoin is extended. Fig. 5 is a partial section and partial elevation showing quoin and snail and the extension-catch at the top of the lock-up. Fig. 6 is an elevation of the key or wrench by which the snail is operated.

The outer tube of the telescopic lock-up consists of a fiat-sided straight rectangular tube of metal, preferably open at both ends.

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For convenience this tube has a slot A' in its Y upper surface and has a notch or opening A2 either in its edge, as shown in Figs. 1 and 2, or in its upper surface, as indicated in Fig. 5. A toothed catch B works through this opening, the catch being pressed inwardly by a spring C, which is connected tothe tube A and to the catch by rivets or in other usual manner. The vertical height of the tubular piece A is less than the height of the type or stone ordinarily used. The width varies ac- 'cording to the requirements.

Inside the tube A, I place a second rectangular metallic tube D, which ts neatly, but not tightly, in the said tube A and is preferably of equal length. One side or face of this tube D is notched, as indicated at D', Fig. 2. The teeth D are preferably inclined in the Vopposite direction from the teeth of catch B, so that the teeth may act as ratchet-teeth and permit the movement of tube Din one direction by the inclines on the teeth lifting the catch, as common in ratchet engagement. Thus the interior tube D may be forced or drawn out of the tube A with no resistance except the friction of the surfaces, including the ratchet-teeth; but to return tube D within the tube A the catch B must be lifted out of engagement with teeth D. Any suitable stop may be used to prevent the complete removal of the tube D from tube A, if desirable to keep the tubes permanently together. Usually the fit is such that the parts will remain together under ordinary usage.

It is preferable that catch B be near the end of tube A to permit full extension of the tube D; but, as will readily appear, it isnot material to the extension which side of the interior tube contains the ratchet-teeth. vFor some purposes it is advisable to place catch B on the upper surface of the furniture, so

that the piece A is free from projection at its edges and can be used as an ordinary filler.

Inside one end of tube D, I place the extension-quoin K. This quoin, as shown, has sidev bars K' and curved ribs K2 on its upper surface. The bars K serve to guide the quoin in tube D and ribs K2 serve for engagement with the snail.

An abutment-piece L is secured inside tube D as by rivets passing through the abutmentpiece and tube. ribs L.

A disk or snail M, having a spiral thread on one of its faces, is placed in the tube D in position to have its spiral thread M engager the curvedl ribs L' and K2. Disk or snail M has a hole M2 for application of a Wrench,

and tube D has a perforation through which` the Wrench, as O, may enter said disk. The slot A in tube A permits the entrance ofthe key or wrench when the telescopic tubes are closed.

that the rotation of snail M will cause the -spiral thread M to engage ribsL K2, and as the ribs L are fixed such rotation in one di- This piece L has curvedl rection must cause the disk to move along, vand. as the snail at the Sametime engages ribs K2 these ribs and quoin K must move to a greater extent. The snail M thus forms a.means for advancing and ret-racting the quoin K.

The lock-up is usually applied on a pressbed by laying it down in the place to be lled and extending it till both ends touch, when the turning of the key and tightening of the quoin will lock up the chase securely. To lock upaform in a chase, the operation is the same. The lock-up is removed by turning the locking-key in the reverse direction.

A pair of lock-ups will usually lock a chase on a press-bed or a'form in a'chase. If a lockup is needed in more than one side of aform or chase, two pairs willgenerally suffice.

I provide the lock-ups in sets of different lengths,'two or more of the same length, in order to accommodate the varying spaces to be filled.

For locking small stones on' the beds of lithographic presses I make the device deeper, so that it may have a better hold on the sides of the stone, which are usually beveled or rounded atthe edges. I also face 'the coin with leather or other pliable material in order to better 'adapt it tothe rough surface and breakable nature of the stone.

By the use of the keyprovided'for'tightening the quoin in my device the degree of pressure applied may be'lnore readilygraduated than with the -screw and wrench ordinarily provided for locking stones'onlithographic presses, andbreakages ofthe stone by too much pressure will be with my device less liable than with the ordinary device.

Another advantage of my device over the ordinary way of .locking and holding small chases on.largeLpress-bedsis'found in the securing and maintaining of accurate' register. Being of metal, therel is no squeezing of it into smaller space at one time than another.

In cases where the lock-ups are used between the bearers of a press and the chase on either side the chase may be easily and quickly moved one way or the other as slightly or as much as may be desired for the purpose by slightly loosening the one quoin and tightening the other.

In the United States patentto Guyon,No. 76,440, dated April '7, 1868, a variety of extensible furniture is shown in which a central piece having a T- head is adjustable in direction of its length between parallel bars having notched surfaces. Such furniture, so far as I am aware, has not been largely used in printing-offices, and is objectionable because it is open, irregular, and in parts, which must be detached for every adjustment. I do not claim .such furniture. `Vlhen the parts are assembled asin Fig. 5,` the quoin being drawn inward, it will appear` Snail-disks such as I have described are old and well known for analogous purposes in vthe mechanical varts, and I have thought it unnecessary to give an extended description of such device.

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eseofa It will be readily understood that modifications can be made within the limits of my claims without departing from the spirit of the invention; also, that my telescopic furniture may be extended and used with ordinary quoins or closed up and used as in ordinary furniture.

1. The telescopic lock-up described consisting of a straight rectangular metallic tube, a second straight rectangular metallic tube longitudinally movable within the iirst,a locking device whereby the inner tube may be fastened in extended position, and a lockingquoin inclosed near one end of the inner tube and having engagement with a snaildisk within the tube, by which said quoin may be projected, substantially as described.

2. In combination with the rectangular metallic tube of the character described, a quoin inclosed in one end of said tube but capable of projection therefrom, said quoin having side guides and a curvedrib, a snail-disk engaging said quoin anda curved rib connected to the tube, and means for rotating the snaildisk, substantially as described.

3. In printers lock-ups a tubular rectangular metallic piece having a side opening, a snail-disk within the tube and having a keyseat in position to be reached through said opening, a fixed rib in the tube with which the spiral rib of the snail engages, andan extension-quoinprovided with curved ribs with which the snail-disk engages, all combined substantially as described.

4. In printers lock-ups5the straight rectanl gular telescopic tubes, one within the other, the rack on the inner tube, and the pawl on' the outer tube engaging said rack through an opening in the outer tube, in combination substantially as described.

5. In printers lock-ups, the straight rectangular outer metallic tube, the straight rectangular inner tube, and locking means connecting the tubeswhereby the inner tube may be inclosed or projected and locked in projected position, and an extensible quoin in the outer end of the inner tube, and means for extending and holding said qnoin, all combined substantially as described.

6. In printers lock-ups, the straight rectangular outer metallic tube, the straight rectangular inner tube, and locking means connecting the two, whereby the inner tube may be entirely inclosed, or projected and locked at any position a little less than full extension, substantially as described.

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

WILLIAM G. SLAUSON.

Witnesses:

J. H. THOMPSON, JNO. M. LARKIN.

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