US2381093A - Printing press - Google Patents

Description

Aug. 7, 1945. E. w. WORTHINGTON 2,381,093

I PRINTING PRE ss Filed Jan.'so, 1943 2 Sheets-Sheet 1 I i Q w. BY

operated.

, newspaper printing press;

Patented "1 Emory T I OFFICE The Goss Printing Press Company, Chicago, IlL,

a corporati'on of Illinois Application January 30, 1943, Serial No. 474,071- 2 ciaims. (01.101409)- The present invention relates to printing press-; es, and more particularly toiceriain cylinders of be set forth in part hereinafter and iii part will beobvious herefrom, or may be learned by prac tice with the invention, the same being realized and attained by means of the instrumentalities and combinations pointed out in'the appended 1-0 claims.

l'he invention consists in the novel parts, constructions, arrangements, combinations, and im-- provements herein shown and described. a

The accompanying drawings, referred to herein and constituting a part hereof, illustrate one embodiment of the invention, and together with the description serve to explain the principles of the invention. t

It is an object of the present invention to procylinders on a printing press. A further object .is theprovision of means for insuringvthe proper lubrication and hence the long wear of such ac-v tuating or cam mechanism. The invention provides an enclosure about such mechanism the ob- Ject being to close off the'mechanism from substances which ordinarily settle there and impair the efficient operation of the press, and to retain lubricant about the mechanism. The invention further provides such" closure meanswhich are easily installed and removed and which permit inspection and adjustment of the mechanism without removal. Still another object is the pro-'- visi of an eilicient closure about such a mechhaving a movable or rotatable cam race and and cam race carrying membertogether when the gripping or securing mechanism. is not to be or thedrawings:

Fi 1 is a longitudinal cross sectional view of a typical and illustrative embodiment of the present invention as applied to a folding cylinder of a a further embodiment of the'invention as applied to the folding cylinder shown in Fig. l; printing presses having paper gripping, taking w or seeming mechanism thereon.

Objects and advantages-of the invention will 5 Fig. 5 is a longitudinal cross sectional view of another typical and illustrative embodiment of the invention'a's applied to the cutting and collecting cylinder of a rotary printing press; and

Fig. 6 isa transverse cross sectional view taken along line 66 of Fig.5. v Referring now to an illustrative embodiment of the invention as shown by way of example in the accompanying drawings, there is provided inthe folding mechanism of a newspaper printing press a folding cylinder having impaling pins and actuating mechanism therefor of a generally customary design. The impaling pins are mounted on a shaft which is mounted for rotary movement within the cylinder in order to thrust the pins beyond the surface of the cylinder'and withdraw them within the cylinder. A stationary member is provided at one end ofthe cylinder haying a cam race in its face adjacent the-end of the cylinder, and this race receives a cam follower eccen- ,trically' secured to the end of the shaft in order to actuate the impaling pin at predetermined times.

An annular cover plate is provided to enclose" cylinder, and, in one embodiment of the inven- "tion, thecover plate is secured at one periphery to the endcf the folding cylinder adjacent the Fig. 2 is a transverse cross sectional view of 1 the embodiment of the inventionshown in Fig. 1 and taken along line 2-2 of Fig. 1;

of v stationary cam race member and extends over the 'cam follower and cam race, having its other periphery closely adjacent tothestationary member. In another embodiment of the invention the cover plate is secured to thestationary member and extends closely adjacent to the folding cylinder at its other periphery, also'providing an effective protection for the cam mechanism.

A further embodiment of the. invention provides an oil seal between the cover plate and the mem-' her to which his not attached, whereby lubricant may be more efiectively'retained about the cam mechanism. An aperture is perferably provided in the cover plate of the embodiments of the invention and an inspection cover is removably secured thereover, allowing access within the, cover plate for adjustment and repair of-the cam mechanism or for the introduction of lubricant."

, In another illustrative embodiment of the inventibn a protective cover plate is provided for the cam mechanism of a cutting and collecting cylinder of a printing press, and this cylinder, as in the embodiments mentioned, is provided with impaling pins mounted on a shaft which is actuated by cam mechanism at the end of the cylin= der. In this embodiment a cam race is provided in a member at the end of the cylinder which is rotatably mounted coaxially with the cutting and collecting cylinder. Means are provided for driving this member at a different speed than the cylinder when the cylinder is collecting products, and for not driving the member when the cylinder is being operated straight run, or not 001-. lecting.

A substantially cylindrical cover member is provided, secured to the rotatable cam race carrying member and extending closely adjacent to the end of the cylinder, covering and protecting the cam race and the cam follower. Means are provided for securing the cover member to the cylinder as well as the cam race carrying member when it is desired to operate the cylinder straight run and the impaling pins arexnot to' tions of the members which overlap longitudinally or in the direction of the axis of the cylinder, which portions are closely arranged but lie but of abutting contact to prevent friction between the relatively rotating members, which is important,-while at the same time providing a sealing space containing a very thin sealing layer of lubricant. This space in each case opens at itsinner side into the cover and at its outer side to the atmosphere. In the relative rotation of the members, lubricant automatically feeds into this space very slowly but at such rate as to keep the space constantly sealed against the possible, indraft of paper dust or other debris by suction, while allowing a small amount of lubricant to escape or to be exuded from time'to time to permit removal of that at the outer side of theispace which may have gathered dust from the atmosphereand to prevent possible indraft of the thus contaminated lubricant. The lubricant which is allowed to escape may be periodically wiped off. By this'means friction between the moving parts and access ofdust to the cover are not only prevented, but the grease or other lubricant forming the seal in the sealing space is kept in a cleanly state and prevented from becoming contaminated by particles liable to cause friction between the moving parts.

. any relatively movable part prevents heating and efficient operation.

binding of parts and the production of sparks liable to cause fires, and which ensures the constant and automatic sealing 'by' lubricant of the space or channel between opposed relatively movable surfaces to exclude dust and to keep the surfaces cool. g

It will be understood that the foregoing general description and the following detailed description as well are exemplary and explanatory of the invention but are not restrictive thereof.

Referring now in detail to the illustrative embodiments of the present invention shown in the accompanying drawings, and referring first to the embodiment of Figs. 1 and 2, the folding mechanism of a rotary newspaper'printing press is provided with a folding cylinder ID of a customary construction which is well understood by those skilled in the art. As embodied, the cylinder III has an axially extending shaft H which is mounted in the sturdy side frames l2 of the printing press or folder by means of tapered roller bearings l3. Means (not shown) are provided for driving the shaft ll whereby cylinder in is rotated for operation in the folder of the press.

A plurality of impaling pins l5 are mounted on a shaft 16 which is positioned within the cylin-,- der and mounted for rotary movement in the ends [1 of the cylinder to thrust the pins l5 beyond the surface of the cylinder or to withdraw them within it. An arm 20 at one end of shaft carries a cam follower 2| which is received within a cam race or groove 22. The cam race-22 is of a configuration to actuate the impaling pins I5 at desired and predetermined times, thrusting them out of the cylinder in to pierce and carry with the cylinder the traveling web and withdrawing them when the sheet is to be released. The cam race 22 is formed in the face of an annular cam member 25, which is secured to a cam carrier member 26, this member in-turn being firmly secured to the frame I2. 7

An annular flared cover member is provided about the cam mechanism which has been described. The cover plate 30, as seen in Fig. 2, is composed of two halves 3! and 32, each having abutting radially extending flanges 33 which are secured together by a plurality of screws 34.

The outer periphery of the cover plate 30 has an outwardly extending flange portion 35 by means of which the plate is secured to the end I! of the cylinder ID with a plurality of tap bolts 36, the plate thus being fixed to rotate-with the cylinder. The inner periphery of the cover plate is formed in an axially extending flange portion 31, and the inner cylindrical surface of this portion is positioned to surround a cylindricalportion 38 of the cam carrier member 26. The flange portion 31 and the cylindrical portion 38 are very closely adjacent to each other but not in touching'relationship, as the members are relatively rotatable and frictional contact is to be avoided.

It is apparent that the cover plate 30 completely surrounds the cam mechanism for actuatingthe impaling pins l5, preventing the settling of paper dust and other press room debris upon the cam mechanism to impair its accurate and A circular aperture 40 is provided in the cover plate 30 and an inspection cover 4! is removably secured thereover by screws 1 42, whereby access may be had to the cam mechanism for. adjustment and'repair, and lubricant may be inserted within the cover plate. A substantial amount of lubricant may be kept within the cover at all times to insure the thorough lubrication of the cam mechanism,'as it will fall into the outer portion of the cover plate when the folding cylinder is not rotating, and will be retained and distributed about said 'outer portion by centrifugal force when thepress is in operation. The loss of lubricant through the small annularaperture between the flange 31 and the cylindrical portion 38 will thus be of negligible drainage of any lubricant which may accumulate in the groove 46.

The embodiment of the invention shown by way of exampl in Fig. 4 of the drawings provides a substantially cylindrical cover plate 50 to prevent the accumulation of dirt, dust and other debris about the cam mechanism. The cover plate 50 is secured to the annular cam member 25 at its outer periphery by means of screws 51, and extends to a position closely adjacent the end ll of cylinder Hl, having a portion 52 to slightly overlap theouter surface of the cylinder and a substantially vertically disposed flange portion 53 to face the cylinder en I 1.

Referring now to the embodiment of the invention shown by way of example in Figs. 5 and 6, the cutting and collecting cylinder 55 of a printing press has the shaft 56 by which the cylinder is rotatably mounted in the printing press or folder frame 5'! by means of roller bearings 58, the bearings being held in spaced relationship and being held in axial position by means of a collar 59 secured to frame 51.

A shaft 60 is mounted within'the surface of cylinder 55 for rotary motion and carries the impaling pins Bl which may be actuated to extend out of the surface of the cylinder or be with drawn therewithin. An arm 62 is secured to the end of shaft 60 and has a cam follower 63 mounted thereon. The cam follower 63 is received within the cam race 65 provided in the face of cam member 66 adjacent cylinder 55.

The cam member 65 is mounted for rotation about the shaft 56 of the cutting and collecting cylinder, being secured to a gear 61 by means of tap screws 58, the gear being rotatably mounted on the shaft by ball bearings 69. These bearings are held in axial position by means of a collar on shaft 56.

The shaft 56 of the cutting and collecting cylinder 55 is driven through a gear 72 at its end from the main drive train of the printing press (not shown), and this gear is also utilized to drive the cam member 66 when the cylinder is to be run collect and the impaling pins Bl actuated to grip the web. A shaft 13 is rotatably mounted by roller bearings 14 in an eccentric carrier 15 in the frame 51. The shaft 73 carries at its outer enda gear 16 and at its inner end a gear 11, these gears being engageable with gears 12 and 61 respectively when the eccentric carrier 15, is turned in frame 51. When these gears are engaged the cam member 66 will be rotated at substantially one-half the speed of the cylinder 55, and the cylinder is then adapted to collect sheets cut from the traveling web.

An annular cover plate 80 is provided to protect the cam race and follower from pressroom dust and debris and to retain lubricant about the cam mechanism. This plate is secured by means When the cylinder 55 is not to be utilized as a collecting cylinder and the impaling pins 6| are not to be actuated from the cam mechanism, the eccentric carrier will be turned to bring gears 16 and 11 out of mesh with gears 72 and 67 respectively. When the cylinder is thus to operate straight run, the cover plate is secured to the cam member 56 by a plurality of tap screws 85, whereby the cylinder, cover plate, cam member 66 and gear 67 all have correlative rotation and the cam mechanism is not in operation.

Although the invention has been shown and described in connection with certain cylinders in the folding mechanism of a printing. press, it will be apparent that the invention is applicable and useful in connection with other rotating cylinders in a printing press having means for operating upon the web or sheets or products of the press which means have actuating or cam mechanism at the end of the cylinder. An example of such use of the invention would be in connection with the stitcher mechanism utilized for forming signatures and actuated by cam mechanism at the end of a rotatable cylinder.

The invention in its broader aspects is not limited to the specific mechanisms shown and described but departures may be made therefrom within the scope of the accompanying claims without departin from the principles of the invention and without sacrificing its chief advantages.

What I claim is:

1. In a printing press, in combination, a rotatably mounted cylinder having a shaft mounted therein for rotary movement to actuate paper gripping mechanism, means for driving said cylinder a cam follower eccentrically mounted on said shaft at one end of the cylinder, a rotatably mounted member at the same end of the cylinder having a cam race to receive said cam follower, means for selectively driving said member at a different speed thansaid cylinder and for disengaging said members from the driving means, cover means secured to the cylinder and extending closely adjacent to said member and enclosing said cam follower and cam race, and means for securing said member to said cover means when said member is not being driven.

2. In a printing press, in combination, a rotatably mounted cylinder having a shaft mounted therein for rotary movement to actuatepaper gripping mechanism, means for driving said cylinder, means for driving said shaft including a rotatably mounted member and connecting means between the same and the shaft located at one end of the cylinder, means for selectively driving said member at a different peed than the cylinder and for disengaging said member from the driving means, cover means extending closely adjacent to said member and secured to said cylinder and enclosing said connecting means, and means for securing said member to said cover means when said member is not being driven at said difierent speed.

EMORY W. WORTI-HNGTQN.

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