US688690A

US688690A - Bed-motion for cylinder printing-machines.

Info

Publication number: US688690A
Application number: US58425596A
Authority: US
Inventors: George F Read
Original assignee: Individual
Current assignee: R Hoe and Co Inc
Priority date: 1896-03-21
Filing date: 1896-03-21
Publication date: 1901-12-10
Anticipated expiration: 1918-12-10

Description

No. sss,a9u. Patented Doc. ID, I901; a. BREAD. BED MOTION FOR CYLINDER PBINTIFIG MACHINES.

' [Application filed Mar. 21, 189B.)

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Patented Dec. l0, I901.

G. F. READ BED MOTION FOR GYLINDER PRINTING MACHINES.

(Application filed Mar. 21, 1896.)

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W Mk fliiesi No. 688,690. Patented Dec. 10, IBM. G.- F. READ.

BED MOTION FOR CYLINDER PRINTING MACHINES.

[Application filed Mar. 21, 1896.) (No Model.) 3 Sheeis-$heet 3.

A I V ":IIIIIIMIIIIIIIIIIIIL lllmlup glllllllll UNITED STATES GEORGE F. READ, OF BROOKLYN, NEW YORK, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO ROBERT HOE AND CHARLES W. CARPENTER, OF NEWV YORK, N. Y., COPARTNERS DOING BUSINESS UNDER THE FIRM- NAME OF R. HOE AND COMPANY.

RED-MOTION FOR CYLINDER PRINTING-{MACHINES SPECIFICATION forming part of Letters Patent No. 688,690, dated December 10, 1901. Application filed March 21, 1896. Serial No. 584C255. (N model.)

To aZZ whom it may concern: pecially designed to form apartoi' the bed-mo- 50 Be it known that I, GEORGE F. READ, a eiti-- tion of bed-and-cylinder printingmachines.

zen of the United States, residingat Brooklyn, and although illustrated herein connection county of Kings, and State of New York, have with that type of bed-and-cylinder printinginvented certain new and useful Improvemachines which has but oneimpression-cylinments in Bed-Motions for Cylinder Printingder it is capable of use with any of the various 5 Machines, fully described and represented in forms of that class of printing-machines, the the following specification and the accompaone illustrated being selected simply for connying drawings, forming a part ofthe same. venience in explaining the present invention.

The present improvements relate to that The printing-machine shown consists generclass of bedmotions more especially adapted ally of a single impression-cylinder whose 60 for use in connection with bed-and-cylinder journals are seated upon spring-supports and printing-machines in which the bed is driven made capable of rising and falling by means throughout the major portion of its reciproof a lifting mechanism,suff1ciently illustrated cation by its bed-driving wheel gearing with to indicate its character by the presence in the one or the other of two driving-racks with drawings of the toggle rock-shaft 4l,its rock- 05 which the bed is provided and in which the arm 42,connectingrod 43, and cam 44 on shaft reversal of said bed at each end of its stroke 25, only one set of which devices is shown at is accomplished, preferably, by means of a the right-hand end of Fig. 2. This type of crank connection that is caused to travel in printing-machine is common in the art of a right line and to gradually slow down and printing. 7o stop the movement of the bed in one direc- In the machine illustrated the cylinder C is tion and to start and accelerate the same in mounted, as usual, in proper journals in the the opposite direction; and the invention conframework and is driven from a main shaft sists more particularly in a means for accom- 10 by means of a wheel 50, fast thereon, which plishing the couple between the bed-driving gears with the cylinder-wheel 60. Beneath wheel and bed-driving racks by sliding the this reciprocates the bed 13, as usual, and itis rim of the bed-wheel to and from said racks, driven by the improved motion now to be de which are for the purpose set in differentscribed. One main element of this bed-mo- 0 planes with respect to the driving-wheel. I tion is a bed-driving wheel D, which prefer- For the purpose of illustrating this invenably is made of such a diameter that although tion the embodiment of it herein illustrated it moves with the same surface speed as the is that of an ordinary single-cylinder bed-recylinder it makes three turns to one of the ciprocating printing-machine, the drawings cylinder. This wheel cooperates with bed- 35 showing, inracks, of which there are two, 11 and 12, one

Figure 1,aside elevation thereof, partlyin above and one below, which are hung from section; Fig. 2, an end elevation thereof as the bed, so as to occupy different vertical seen from the rear. Figs. 3 and 4 are plan planes with respect to the driving-wheel, alviews with the bed removed, being taken on though their pitch-lines are respectively in 0 a section-line which cuts the upper rack 11; the same horizontal plane as the pitch-line of and Fig. 5 is a facial elevation of the bedthe bed-wheel D, at the top and bottom por- 9o driving crank-wheel, the removed part being tions thereof. The hanger H, carrying the shown as severed on aline throughthe interlower rack 12, also provides centrally by nal Wheel-supporting frame. Fig. 6 is a secmeans of two side bars 15 16 a longitudinal 45 tionalside elevation of the bed-driving wheel way S, having at each of its ends abutments and reversing mechanism. 13 14, said hanger 11 being guided ona rail 5 This invention may be applied generally to 61, supported by the framework. reciprocating beds, but is more especially The bed-driving wheel D is hung upon the adapted for use in connection With and is esmain shaft l0,and when the machine is in operation it runs continuously. In this instance it is a compound wheel, forming-a crank and gear or pinion thereon, and has a body or crank O, which presents a periphery of a Width slightly greater than double that of the movable toothed rim which itcarries, and the said movable toothed rim is of such a width that while engaged with one rack, as in Fig. 2, it may bediseng'aged from the other rack, and vice versa. It is provided with means suitably arranged and timed, so that. said rim may be appropriately moved from one rack to the other longitudinally of the shaft or axis of the body or crank O and the gear and is splined onto the body or crank 0, so as to rotate therewith. This shifting means consists of a collar 6, fast to said movable rim, in the groove of which collar pins extending from levers 2021 protrude, which levers 2O 21 are fast to a rock-shaft 22, thus forming a yoke that is rocked by a rock-arm 23, that is provided with a bowl that enters the grooved cam 24, fast on the counter-shaft 25, driven through

gears

51, 52, 53, 54, and 55 from the main shaft 10. The bed-driving wheel D carries a stud or wrist-pin 3, the center of which is exactly midway between the center of the driving-shaft i0 and the pitch-line of said wheel D, and'ttpon this stud 3 revolves a pinion 2, whose pitch-circle diameter is one-half that of the wheel D, the teeth of which pinion 2 engage with those of an internal or annular gea r 8, of the same pitch-circle diameterasthe bed-wheel I), which internal orannular gear is fixed securely tothe framework by brackets X. This arrangement of the crank-wheel D, carrying with it the pivot of the pinion 2, therefore causes that pinion 2 (t meshed with the internal gear 8 to revolve around its stud 3, and as there are twice as many teeth in the internal gear 8 asthere are in the pinion 2 one revolution of the bedwheel D will cause the pinion 2 to make two complete revolutions about the stud, and any point in the pitch-circle of the pinion 2 will consequently move in a straight line a dis tance equal to the diameter of the internal gear 8 and at the same velocity as would be derived from a crank of the same radius as that of the driving or crank wheel D. A crank-pin 9 is therefore secured to the side of the pinion 2, with its center coincident with a point in its pitch-circle and in such position that it will move in a central horizontal line back and forth. This crank-pin 9 is secured to the pinion 2 by means of an arm 4, which carries it, said arm being fast to the pinion, and said crank-pin being preferably provided with a square box 1, inclosing it. This crank-pin 9, with or without its inclosing box, fits within the longitudinal guideway S, formed between the bars 16, which guideway S has a length between its abutments 13 14 equal to the length of stroke the bed B makes during the main part of its reciprocatory movement, and the hanger H is provided near the said abutment-s at each end with a locking-lever L, pivoted thereto and spring-seated, so that each lever may, whenever the crank-pin 9 or its inclosingv box is in contact with the abutment at the end of the guideway S, be raised to lock the parts together or lowered to release them, these movements being accomplished by suitable rock-arms 31, (see Figs. 3 and 4,) which run in longitudinal camways 32, the normalposition of which levers is their open position. As shown in Fig. 1, thetbed B, then moving in the direction of the arrow shown, while geared with the rack 12, has made the major part of its non-printing run, driven by the wheel D,'and has arrived at the point where the rack 12 is to leave the wheel D and the bed is to be reversed bythe action of the crank-pin 9 solely. When the rack 12 has run out of engagement with the drivingwheel D, the rim of said wheel is moved laterally by the cam 24 out of line with the rack 12 and into line with the rack 11, the further movement of the bed being wholly within the control of the crank-pin 9, which then rests against the abutment 13, to which it is then locked by the latch L. The reversing movement is accomplished wholly by the crank-pin 9, which by reason of the construction and operation of the gearing travels in a rightline with a movement that is first equal to the maximum speed of the bed and then gradually slows down and brings the bed to a state of rest, at which time the crankpin having made its greatest extent of movement in the direction of the arrow slowly begins its movement in the opposite direction, thereby gradually starting the bed and accelerating it until its maximum speed has been again attained, at which time the toothed rim of wheel D will gear with the rack 11, and the further driving movement of the bed will be wholly accomplished by the wheel D and said rack 11. \tVhile thus driven the crank-pin 9 will again make an idle movement as the bars 15 IG'pass over-it, and when the bed has made the major part of its printing movement in the direction opposite to that of the arrow, driven by the rack 11, the abutment 14 will contact with the crankpin 9 and begin the reversing movement at the other end, while the said wheel D simultaneously moves out of alinement with the rack 11 and into alinement with the rack 12.

The means shown I in the drawings and above described for operating the bed when the wheel D is released from the racks 11 12 and acting to gradually slow down the bed to a state of rest and gradually accelerate the bed to its maximum speed in the opposite direction is described and claimed in my other applications, Serial No. 571,328, filed December 7, 1895, and Serial No. 584,045, filed March 20, 1896.

In Figs. 1 to 4, inclusive, the toothed rim of the wheel D is fixed to its body by means of splines 5, which operate in the usual mannor as guides and stays. In Fig. 5, however,

. there is illustrated anotherstructure,in which the body 0 is polygonal, and its projecting corners provide the guideways for the movement of the .wheel I), which is provided with corresponding seats.

I am aware that the moving of a bed-driving wheel laterally, so as to engage alternately with racks placed in different vertical planes, is not new; but making the wheel in two parts,the central or body portion of which may remain fixedly secured to the shaft and carry the crank-pin 9, while the rim only has a lateral movement, is an essentially novel construction.

Although when the toothed rim is engaged with the racks to drive the bed there is great stress upon the splines or faces of the pol ygon,

which would make it impracticable to move the rim laterally at that time, it will be observed that the lateral movement is not made until the racks have run out of engagement with the driving-wheel and when there is no power being comm unicated through it to drive the bed, and consequently but little friction upon the sides of thesplines. By this construction of the bed-driving wheel Dthat is, providing it with a 'movable toothed rimgreat stability of the parts is attained, for the reason that the main body of said wheel remains undisturbed in its bearings. The structure also enables the parts to be brought into a narrower compass than when the wheel is mounted to rotate horizontally and made to move up and down, which enables the central bed-runners I00 101 to be brought so near to the center of the bed as to form strong sustaining parts therefor.

What is claimed is- 1. The combination of the bed, two facing racks in different planes carried by the bed, a wheel having a rim and a body of greater thickness than said rim, the rim being adapted to move longitudinally of the axis of the wheel on said body from engagement with one of said racks to engagement with the other of said racks,and means for giving such movement to the rim, substantially as described.

2. The combination with a bed having two facing-racks in different planes and separated a distance equal to the diameter of the beddriving wheel, and a bed-driving wheel provided with amovable toothed rim and means for moving the same longitudinally of the axis of the wheel from one rack to the other, of a pinion pivoted eccentricall y to said beddriving whee1,and a bed-driving member carried by said pinion and cooperating with abutments 011 the bed, substantially as described.

3. The combination of racks in diife'rent-planes carried by the bed, a wheel having a rim and a polygonal body of greater thickness than said rim, the rim being adapted to move longitudinally of the axis of the wheel on said polygonal body and from engagement with one of said racks to the bed, two facing engagement with the other of said racks, and means for giving such movement to the rim, substantially as described.

l. The combination with the bed-racks located in adjacent vertical planes, of a rotata ble shaft having an enlargement on one end, a sliding gearactuating said racks, means independent of the gear for controlling the bed during the reversing operations, and means for shifting the gear from one rack to the other during such reversing operations, said gear being made in ring form and being slidingly mounted upon the enlargement of said shaft, substantially as specified. i

5. The combination with the bed-racks located in adjacent vertical planes, of a sliding ring-gear, an enlargement or hub on the gearshaft on which enlargement the gear is splined, a yoke operating in a groove formed at the side of the gear, and means for operating said yoke in sliding the gear, substantially as specified.

6. The combination with the bed-racks located in adjacent vertical planes, a sliding ring-gear, an enlargement or hub on the gearshaft upon which enlargement said gear is mounted and to which it is splined, a bearing for said shaft, and means for shifting the gear, substantially as described.

7. The combination of a bed, a shaft, a rotating crank carried by the shaft, a pinion supported on and rotated by said crank, means cooperating with the pinion forreciprocating the bed, means for shifting said pinion parallel to the axis of the crank, and mechanism actuated by said crank for reversing the movement of the bed, substantially as described.

8. The combination of a pair of racks in different planes, a rotating crank, a pinion supported on and rotated by said crank, and means for shifting said pinion and parallel to the axis thereof, to alternately engage the racks.

9. The combination of a rotating crank provided with a wrist-pin, a main pinion supported on and rotated by said crank, a pair of racks located in different planes and adapted to be alternately engaged by said pinion, and means for shifting the pinion on the crank so as to alternately engage the racks, with means whereby the wrist-pin is enabled to slow down and reverse the bed while the pinion is being shifted from one rack to the other.

10. In a bed-movement, the combination of a pair of racks, a revolving crank and mechanism operated thereby for reversing the movement of the rack-frame at each end of the stroke, an annular or ring pinion slidably mounted upon and supported by said revolving crank, and means for shifting the pinion from engagement with one rack into engagement with the other, during the period of reverse.

11. The combination of a rotatable shaft having a large hub or crank-disk on one end,

on the crank a'rack-frame provided with parallel racks disposed in different planes, an annular or ring pinion slidably mounted on but rotating with said crank-disk, means independent of the racks and pinion for revel-sin g the movement of the rack-frame at each end of its stroke, and means for shifting the pinion upon the disk from engagement with one rack into en gagement with the other during the period of reversal.

12. Inabed motionforprinting-presses,the combination with the racks, of a rotatable shaft having an enlargement, a gear supported on and sliding on the enlargement of said shaft from one rack to the other,and free from extraneous friction, a wrist pin supported from the shaft by means independent of the gear, means engaged by the wrist-pin and whereby it is enabled to slow down and reverse the bed, and means for sliding the gear, substantially as described.

13. Inabed-motionforprinting-presses,the combination with racks arranged in adjacent planes, of a shaft mounted in stationary bearings, having a large hub on its inner end, a gear supported on, keyed to, but sliding on said hub from one rack to the other, means independent of the gear for slowing down and reversing the bed, and means for sliding the gear on the hub from one rack to the other,

substantially as specified.

14. In a printing-press, the combination with the cylinder and bed, of racks attached to the bed in adjacent planes, an actuatingshaft having a large hub, a gear supported on, keyed to, and sliding upon said hub from one rack to the other, means independent of the gear for slowing down and reversing the bed, while the gear is disengaged from the racks, and means for sliding said gear from one rack to the other, substantially as specified.

15. The combination with the bed-racks arranged in adjacent planes, a rotatable longitudinally-immovable shaft having a large hub on one end, a gear mounted on the said hub and sliding from one rack to the other, said gear being independent of the shaft-bearing, and means for slowing and reversing the bed, substantially as described.

16. The combination with the bed-racks arranged in adjacent planes, and the cylinder, of a longitudinally-immovable driving-shaft having a large hub on one end, a gear supported on, keyed to and sliding on said hub and engaging the racks alternately, said gear being independent of the shaft-bearing,1neans for shifting the gear, and means for slowing and reversing the bed While the gear is disengaged from the racks, substantially as specified.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

F. W. H. CRANE, E. L. SPEIR.