US1239127A - Changer for inking apparatus for printing-presses. - Google Patents

Description

'w. J. RAMSAIER. CHANGER FOB INKING APPARATUS FOR PRINTING PRESSES. APPLICATION FILED JULY I7. I916.

WILLIAM J". RAJVISAIER, OF NEW YORK, N. Y.

CHANGER FOR INKING APPARATUS FOR PRINTING-PRESSES.

Continuation in part of application Serial No. 101,432, filed June 3, 1916. This application filed July 17,

Specification of Letters Patent.

Patented Sept. at, 191'? 1916. Serial 1\T0.109,821.

To all whom it may concern: v

Be it known that I, l/VILLIAM J. RAM,- SAIER, a citizen of the United States, and resident of the borough of'Manhattan, city, county, and State of New York, have invented certain new and useful Improvements in Changers for Inking Apparatus for Printing-Presses, of which the following is a specification.

In ink-distributing apparatus for printing presses one inking roll is usually caused to reciprocate axially while in contact with the other ink-distributing rolls, the purpose being to evenly distribute or spread'the ink on the inking rolls. The roll which is reciprocated is called the changer or distributer. This changer, in some types of press, is reciprocated by means of a duplex thread carried directly by the changer shaft, the changer or distributer roll carrying a piv oted crescent-shape switch which is arranged to operate in the duplex thread and thereby reciprocate the changer.

One of the principal objects of this inven tion is to provide a sleeve adapted to fit;

within the changer and having a duplex thread formed in its inner surface, a crescent-shape switch. being carried by the changer shaft and operating in'the duplex thread formed in the interior of the sleeve. Another object of the inventionis to sim plify and improve and strengthen the construction of the devices by means of which the reciprocating motion is imparted to the changer.

Another object of the invention is to construct a changer reciprocating 'mechanism which may be readily connected to the changer .roll and to the changer shaft, and which may be readily detached therefrom for the purpose of repair, or for the purpose of renewing any of the worn parts.

Another object of the invention is to provide a changer reciprocating device which is adapted to be placed in-the changer roll through'one end thereof so that there will be no screws or bolts passing through the cylindrical surface of the changer roll.

7 Another object of the invention is to provide a very simple and effective means for securing the changer shaft in its bearings.

There are other important objects and advantages of the invention which will appear hereinafter. i

In the drawing, Figure 1 is a longitudinal central sectional view of the changer roll, the changer shaft beingshown in elevation;

Fig. 2 a transverse sectional view on the line IIII of Fig. 1;

Fig. 3 a detail longitudinal sectional view of the threaded sleeve;

Fig. 4.- a side elevation of the threaded sleeve;

Fig. 5 a side elevation of a portion of the changer shaft;

Fig. 6 an end elevation of the changer, and

Fig. 7 a side elevation of a portion of a press frame, showing the changer inposition therein.

Referring to the various parts by numerals, 1 designates the changer-shaft which is adapted to be mounted in suitable bearings in the press frame 2. At each end of this shaft is formed a lug 3 having the flat under surface 4: adapted to slide on the square face of the bearing slot 5, formed in the press frame. Pivoted to the lug 3 is a clamping jaw 6, said jaw being pivoted at 7. The upper surface of this clamping jaw is provided with teeth 8 which are adapted to engage corresponding teeth 9 formed on the locking plate 9 and arranged on the opposing surface of the bearing slot. A spring 10 placed between the lug 3 and the clamping jaw forces thejaw outwardly and holds it in engagement withthe teeth 9. The clamping jaw 6 is formed with an operating handle 11 by means of which it may be swung toward the lug 3 to release the teeth 8 from the teeth 9 so that the shaft may be withdrawn from the bearing slot. The teeth 8 and 9 are so shaped that they resist an outward thrust on the changer shaft; and they are small enough to permit of a very nice adjustment between the changer and the con tacting distributing rolls.

The changer 12 is formed with the bearing 13 at one end, and the bearing 1% near its other end, said bearings contacting withthe changer shaft and centering and supporting the changer roll. Between the. bearing 1 1 and the adjacent end of the roller is formed a chamber 15, said chamber being of any suitable length. In this chamber is fitted a sleeve 16, said sleeve fitting snugly over the shaft. At its inner end said sleeve is formed at diametrically opposite points with two inwardly extending lugs 17 which fit in recesses formed in the bearing 14 of the changer roll, as shown clearly in Fig. 1. In the interior surface of the sleeve is formed a duplex thread 18. The outer end of said sleeve is closed by an end ring or cap 19, the inner surface of this ring forming the outer end of the duplex threads of the sleeve.

The ring 19 is formed with two inwardly "extending lugs 20 at dlametrically opposite points, and sald lugs fit corresponding re cesses formed in the adjoining end of the sleeve 16, so that the said ring is lockedto the sleeve. The lugs 17 lock the sleeve to the changer so that said sleeve will rotate therewith. A locking ring 21 is screwed into the end of the changer roll, its inner surface engaging the end ring 19 and holding it in its proper locked relation to the sleeve 16. A locking screw 22 is threaded through the locking ring 21 and engages the end ring 19, to thereby secure the locking ring against rotation. By this means the sleeve 16 and the rings 19 and 21 are rigidly locked to the changer roll to rotate therewith.

In the adjoining faces ofthe rings 19 and 21 is formed an oil cavity 23. In the locking ring is formed an O1l opening 24E-wh1ch 1s closed by spring-pressed ball valve 25. In the surface of the changer shaft is formed an oil groove or passage 26 which communicates with the oil chamber 23 so that oil from said chamber will travel along the shaft through said groove throughout the length of the sleeve 16, and deliver oil to the interior thereof.

To cause the changer-roll to reciprocate longitudinally, a crescent switch 27 is pivotally mounted in the shaft, the crescent portion thereof fitting and operating in the duplex thread of the sleeve. The crescent is formed with a central stem. 28 which fits inan aperture in the shaft. A portion of the shaft directly under the crescent is cut away to form the fiat portion 29 on which the corresponding straight portion of the crescent slides during the oscillation of the crescent. By this means the center portion of the crescent may be made much broader and stronger. The ends ofthe' crescent engage curved surfaces 30 formed on the shaft. These curved surfaces are cut on an arc struck from the center of the pivot of the crescent. By this means the ends of the crescent will be in bearing contact with the shaft at all times, so that the said crescent is v supported throughout its entire length,

while at the same time it may freely and accurately follow the duplex thread in the sleeve 16.- It is important that the crescent shall be supported at all times by the shaft for the reason that the said crescent is necessarily comparatively small, and unless it is properly supported it frequently breaks. The crescent is tapered to a sharp edge at each of its ends, as shown in Figs. 2 and 5, so that it will readily follow the thread in the sleeve 16.

It is manifest from the foregoing that I provide a very simple, durable and eflicient construction. The crescent is strongly connected to the changer shaft and is not liable to be damaged. The sleeve in which the duplex thread is formed may be of any suitable material, and may be readily attached to or detached from the changer roll and the changer shaft. There are no openings or breaks in the cylindrical surface of the changer, which, of course, permits of a very even distribution of the ink andalso prevents injury to the contacting distributer rolls. The means for securing the changer shaft in its bearings is of great advantage, and not only permits of a ready removal of the changer, but also prevents a too-great pressure between the changer and the contacting distributer rolls.

What I claim is: j a

1. The combination of a shaft, anink distributing roll thereon,*a pivoted clamping jaw carried by said shaft and formed with teeth on its outer surface, alocking plate formed with teeth adapted to be engaged by the teeth on the clamping jaw, and a spring adapted to force the clamping jaw into engagement with the teeth of the locking plate.

2. A changer comprising a changer shaft, a changer roll rotatably mounted thereon, a sleeve secured within said roll to rotate therewith and formed with an internal dupleX thread, a crescent switch operating in said'thread, a central'inwardly extending stem connected to said crescent and projecting into the shaft, a portion of the shaft under said crescent being cut away to form a bearing surface for said crescent and'a portion ofsaid shaft being cut away on an arc struck from the center of the stem of the crescent, whereby the crescent ends will conta'ct-withthe shaft as the said'crescent vibrates.

3. A changer comprising a changershaft, I a changer roll rotatably mounted thereon,

a sleeve Within said roll, means carried by said sleeve adapted to engage the roll to lock the roll andsleevetogethensaid sleeve being formed with aninternal duplex thread, an end ring closing one end of the sleeve, means formed 'on said ring to engage the sleeve to lock the ring thereto, a locking ring threaded in theend of the changer roll and holding the ring in engagement with the sleeve and a crescent switch pivotally mounted on the shaft and engaging the threads of the sleeve.

4. A changer comprising a changer shaft, a changer roll rotatably mounted thereon, a sleeve within said roll, means carried by said sleeve adapted to engage the roll to lock the roll'and sleeve together, said sleeve 130 being formed with an internal duplex thread, an end ring closing one end of the sleeve, means formed on said ring to engage the sleeve tolock the ring thereto, a locking ring threaded in the one end of the changer roll. and holding the ring in engagement with the sleeves, a crescent switch pivotally mounted on the shaft and engaging the threads of the sleeve and means for securing the locking sleeve to the end ring.

5. A changer comprising a changer shaft, a changer roll rotatably mounted thereon, a sleeve within said roll, means adapted to engage the roll to lock the roll and sleeve together, said sleeve being formed with an internal duplex thread, an end ring closing one end of the sleeve, means formed on said ring to engage the sleeve to lock the ring thereto, a locking ring threaded in the one end of the changer roll and holding the ring in engagement with the sleeve, a crescent switch pivot-ally mounted on the shaft and engaging the threads of the sleeves,

means for securing the locking sleeve to the end ring, an oil chamber formed within the end ring and the locking ring, and a valved passage in the locking ring communicating with the said oil chamber.

6. A changer comprising a changer shaft, a changer roll rotatably mounted on said shaft and formed with a cylindrical chamher at one end, a sleeve in said chamber formed with an internal duplex thread and having a projection at its inner end engaging a recess in the adjacent end wall of said chamber, means threaded into the outer end of said chamber to confine the sleeve there1n with said pro ection extendmg mto the recess in the end wall of the chamber, and a" crescent switch connected to said shaft and operating in the duplex thread on the sleeve.

7. In a printing press the combination of a frame, a shaft mounted therein, an inkdistributing roll mounted on said shaft, said shaft having angular end portions extending through bearing slots in said frame, and yieldable means interposed between one face of each of said end portions and the adjacent wall of its bearing slot to lock said shaft in said slots and hold the same against rotation.

S. A changer comprising a shaft,a changer roll rotatably mounted thereon and provided with an internal duplex thread, and a crescent switch operating in said thread and pivotally connected with said shaft, said shaft being recessed to form an arcshaped bearing surface for the ends of said crescent switch.

9. A changer comprising a shaft, a changer roll rotatably mounted thereon and provided with an internal duplex thread, and a crescent switch operating in said thread and formed with a pivot pin journaled in a diametrically extending socket in said shaft, said shaft being cut away to form a bearing surface for the inner edge of said crescent throughout the length thereof, whereby the crescent will be supported throughout its length by said shaft as the crescent vibrates in the thread on the changer roll. V

In testimony whereof I hereunto aflix my signature.

WILLIAM J. RAMSAIER.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G.

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