USRE11273E - cro well - Google Patents

Description

6 Sheets-Sheet 1.

L. C. CROWELL.

Assignor to R."H0E, S. D. TUCKER, T. H. MEAD & C. W. CARPENTER. BED MOTION FOR CYLINDER PRINTING MACHINES.

No. 11,273. Reiss'ued Sgpt. 2'7, 18

Witnesses: z/eni'or:

"r/ZZ/ 6 Sheets-Sfieet *2. L. O. OROWELL.

Assignor-to R. HOE, S. D. TUCKER, T. H. MEAD & C. W. CARPENTER. BED MOTION FOROYLINDER PRINTING MACHINES.

No. 11,273. V Reissued Sept. 27, 1892.

W itnesses: %%y g M) 6 SheetsSheet 3.

L. C. GROWELL.

Assignor to R. HOE, S. D. TUCKER, T. H. MEAD & C. W. CARPENTER. BED MOTION FOR CYLINDER PRINTING MACHINES.

No. 11,273. Reissued Sept. 27, 1892.

Vain asses: 71 we ntar;

@du/ I @wi/za. I 133 94% MM I W tw- 6 Sheets-Sheet 5. v

L. C. CROWELL Assignor to R. HOE, S. D. TUCKER, T. H. MEAD &. G. W. CARPENTER BED MOTION FOR CYLINDER PRINTING MACHINES.

Reissued Sept. 27, 1892.

No. 11,273. I .4,

I In

v 6-SheetsSheet 6. L. 0. GROWELL. Assignor to R Hum, S. D. TUCKER, T. H. MEAD & G. W. CARPENTER.

BED MOTION FOR CYLINDER PRINTING MACHINES.

y Relssued Sept. 2'7, 1892.

W/L'tnases:

I I a I" I ve nt or:

86 flttyls.

UNITED STATES. PATENT O FICE.

LUTHER e. OROWELL, OF BROOKLYN, ASSIGNOR TO ROBERT HOEQSTEPHIENI 'D. TUCKER, THEODORE H. MEAD, AND CHARLES W. CARPENTER, ALL on 4 NEW YORK, N. Y.. a I a BED-MOTION sFOR CYLINDER PRINTING-MACHINES.

SPECIFICATION-forming of eissues Letters Patent No, 11,273, dated September 27, 1s92.-

Original No. 480,321, dated August 9.1m. Application for reissue and August 30,1392. semlnaueaes.

TaaZZ whom' it may concern: y reversal of the bed by a movementrwhich is Be it known that I,-LUTHERO. OROWELL, a both powerful and smooth. V citizen of the United; States, residing at the The'invention also embraces such a lever' city of Brooklyn, county of Kings, and State made double and provided at each end with of New York, have invented certain new and a stud, one of which studs is engaged at each useful Improvements in Bed-Motions for Cylend of themovement of the bed by the said inder PrintingMachines, fully described and pocket and carried thereby through the represented in the followingspecifieation and curved guideway provided by the rotating the accompanying drawings, forming a part guard in the performance of the reversing opro of the same. 1 erations at each end of the run of the bed.

The present invention is constituted by im- Theinvention also includes,in combination provements upon that shown in Letters Pat-' with the foregoing, a curved guide or guides ent No. 5,200, granted to Richard M. Hoe July attached to the bed,iu which guide or guides 24, 1847, and relates to that class of printingthe stud or studs on the endlor ends of said I 5 machines which have reciprocating type-beds lever are forced to travel in an are that is-op that co-ope rate with rotating cylinders in makposed to that traveled by the pocket and from ing the impression, whether said machines which results a compound movement that is have one or more such cylinders and whether an extended path, which produces a cam-like said cylinder or cylinders oscillate or rotate action, enabling the bed to'be I'etarded'and; 2o periodically or continuously orin'the-same or stopped so smoothly as to avoid jarring and opposite directions or make one orany numto be started and accelerated-with great ease. ber of revolutions during each reciprocation The, above constitute the most prominent of the type-bed. In short, the' lnven'tion ap features of the inwent'ion. Other improve.- plies to a machine havinga reciprocating bed, merits, however, will appear in the course of 2 5 no matter how the impression is taken therethe following detailed description of the mode from, although it is illustrated in connection in which the invention is practically embodwith a single-cylinder printing-machine; ied or carried'into-elfecha ready understand- The object of this invention is the providing of WhiCh'Wlll be aided by reference to the ing of a mechanism for retarding and stopaccompanying drawings, in whicheo ping the movem'entof the bed in one direction 1 Figure 1 is a side elevation, Fig. 2 an end and starting and acceleratingit in the reverse elevation, and Fig. 3 a plan view, of a printdirection at each end of its run, whichs'hall' lug-machine embodying the present improveperform these reversing operations so quickly merits, while Fig. 3* is a vertical sectional eleas to minimize the time for theiraccomplishvation taken through the drivingpinion 5 'me'nt, and thus provide for the attaining of shaft; and Figs. 4, 5, 6, 7,8, and 9 are diagrams the highest rate'of speed of the machine with-' illustrating various positions assumed by the out unduly modifying it in making such reretarding, stopping, starting, and accelerating versals of the bed at the ends of" its stroke, mechanisms during the Operations of revers- The'invention consistsin combining with a ing the bed. Y I I 40 rack and pinionor other means producing the The printing-machine illustrated comprises 0 major part of themovement imparted to the the usual impression-cylinder O, mo'untedto bed a swinging lever provided with a stud, --re\-'olve in suitable'journals supported by the which is engaged near the end of the moveframework, which cylinder co-operates withal ment of the bed in one'direction-bya pocket reciprocating type-bed B, that is supported 5 in the periphery of a revolving disk and car by sliders S, wl1ich run in--l ongitudinal ways 5 rled by said pocket through a curved guide- W,supported by theframework. This cylinway provided by afrotating curved guard, der 0 is rotated by means of an outside train whichmovementof thelever-stud thus caused consisting-of {wheel- 50, driven through an inin'said curved guideway is'equivalentfto that. termediatefil. from a wheel 52 on a shaft 12.

5c of a crank, and. hence operates to cause the This'sh'aft 12 also carries what is usually re; roe

driving pinion 11, said ferred to as the main driving-pinion 10, be-

movements of the bedpinion 1O usually making, as it does in this instance, three revolutions to each reciprocation of the bed; but, though experience has demonstrated such a size and relative movement to be advantageous, its relative movement without afiecting the present improvements, as may also the construction and arrangement of the rack-and-pinion mechanisms.

The bed-driving pinion 11 is mounted to turn freely upon a short it is arranged to slide to such extentlaterally as to be alternately meshed with the bed-racks cause it determines the 21- 22, it being made wide enough to continue in gear with the pinion on its-shaft 13 are imparted by .ion 10 for an object yet 10, which constantly drives it.- .These racks 21 22 are supported directly from the under side of the bed B, and they are vertically aligned, so as to be separated a suitable distance apart and horizon-tally related to the pinion 11 ,so that their pitch-lines respectively agree with thepitch lines. at the top and bottom of said pinion. Timely sliding movements of this pinion 11 means of a collar 23, attached thereto, intowhich is entered one .end of a pivoted lever-24, that is strapped to another pivoted lever 25, which latter isperiodically vibrated by nieanso. a cam 26, that is fast to the guard-disk G and revolves with it on the shaft 12. This shaft 12 carries at itsvinner extremity a revolving pocket-disk P, having a pocket 1. In Fig. 3*

this shaft and the pocket-disk are shown in. elevation for the sake of clearness,

and said pocket -1 is occupied in said figure by the stud This pocket-diskis provided with a hub 20, which embraces the shaft 12 and is secured fixedly thereto by means of aspline. This shaft 12 also supports a revolving guarddisk G, which is mounted to turn freely upon said hub 20, carries at its rear side the cam 26, and has its periphery provided with teeth, forming a gear-wheel 27, by which motion is imparted to it and said cam through intermediate pinions 28 and 29 from. the main drivin g-pinion 10,which intermediate pinions are so proportioned to said pinion 10 and guarddisk-G that the rotation of the ,cam and the guard-disk are relatively slower than the pinto-bo explained. On its face side this gnard-disk-carries the guard 2, within which the pocket-disk P revolves,

' the relative proportions of pocket disk, travel in the said guard thus overhanging the pocket disk and co operating, as willyet appear,'to embrace the stud 3 or 6 between it and the and thus cause said stud to circular path thus rovided. The pocket-disk makes turn for turn with the pinion 10,and,being of like size, hasa correspondin g surface speed. It thus results from the gearing that theipocket-disk P makes three revolutions to one of .the guard-disk G.

The type-bed B-ie provided with a swinging lever L, centrally pivoted to an arm A,

may be changed shaft 13,-upon which 'erwise guided by the arm,

depending from the bed, and said bed carries depending at its opposite ends outwardlycurved arms 30 and 40, in which the free ends" of said lever are respectively guided. Each end of this lever is provided at one side with a stud, as 3 or 6, that is periodically entered into the pocket 1 of the disk P and with the curved guard 2 of the disk G, said pocket 1 and the guard 2 forming a curved pathway in ver L is driven by the rotation of the pocket disk P, and as this pathway is like that traveled by a crank it. consequently imparts the controlling motion of a crank to the reversing of the bed. On the opposite side each end of the lever is'provided with a stud, as 5 or 7, that travels in the pathwayofi or is othas 30 or 40. Said crank motion is thus supplemented by what is tantamount to a cam motion, for the reason that the stud 5 or? on the lever end travengaged which the stud 3 or 6 on the leels in a guideway the arc of which is opposed to thatin which said lever end is moved by the action of the pocket-disk andguard 2, and such compound movement renders itposa sible to slow down and stop the bed with great propel thesmoothness and to restart and same with great ease.

As the stud 3 upon the lever L must enter the pocket 1 in the disk? when it is approachingand passing its highestpoint of. travel (see Fig. 9) and must leave the said pocket when it is approaching and passing Y its lowest point of travel, as in Fig. 5, which movement would leave the lever L tilted up,

with its stud 6 in its'highest position, and-as said studG must enter said'pocket when it is approaching and passing its lowest point of travel, as in Fig. 6', and must leavethe pocket whenit is approaching and passing its highest point, (see Fig. 8,) which movement would leave said lever so tilted as to depress the stud 3 in. its lowest position, it follows that said lever must "be reversed after each such operation and assume its normal position of Figs. 6 and 9 in order topresent its stud properly to the action of said pocket and to the guard before another such operation is to be made. This is accomplished by means of spring- .seated rods, as 31 and 32, pivoted to bosses 33 34:" on opposite .sides of the central part of the lever L and arranged to press inwardly from therear of the curved guidearms 30 40, .by the operation of which springrods said lever will as its one stud, as 3, has cleared the pocket 1 and guard 2 when in the lowest positionjto which it is rockedbe'depressed, so as to carry the stud 6 upon its.

other end down into proper position for the making of a like performance, and vice versa. This and all of the movements of the other parts will be made clear by the following de- .scription of the operation, in connection with the diagrams Figs. 4- to 9, wherein various parts, which would obscure others then active,

are either broken away or shown in lines or dotted lines.

In the position shown in, Fig. 9 the parts are in the positions which they have when the bed, having made the major part of its nonprintingor return run, driven by the rack-andpinion mechanism in the direction indicated by the horizontal arrow, is to have that movethat of the curved arrow-that the surface speed of the pocket-disk is equal to that imparted by the rack-and-pinion mechanism to i the bed, and that the speed of the guard-disk is slower than that of the pocket-disk, the

latter making three revolutions 'while the guard-disk makes one, it will be apparent, since the rear end of the guard 2 coincides in position with that of the pocket 1 when the latter is in its highest position, that while the pocket-disk makes a half-revolution to bring I ;-its pocket 1 into its lowest position the forward end of the guard 2' will arrive simultaneously at the same point, said guard being thus in position for the timely entrance and exit of the stud 3, and, furthermore, that this guard 2 will perform in alike manner with respect to the stud 6 on the lever L. It will also be observed that during the reversing operations the'pinion 11 is moved laterally. to

. bed and bring it to a momentary state of bringit into. the'path of travel of the rack with which it'is' nextto be engaged. As the pocket 1' is closely approaching and passing its highest point and the tailof the guard 2' coincides in position with it, as in Fig. 9, at which time said pocket, the rack 22, and stud 3 are moving at the same surface speed as the driving-pinion, the rack 22 will run'out of the 'pinion 11 and the stud 3 will simultaneously enter the pocket 1 and pass behind said guard .2, and while the pocket makesaquarter-revolution it will carry the stud 3 in the curved. or crank pathway formed by the guard 2 and compel the stud 5 to travel in the reversed curved pathway in the arm 30, and thus through a compound movement gradually. retard the rest, as in Fig. 4, which compound movement thus obtained is cam-like or of greater and hence easier sweep than is the movement'imparted through a semicircularpath or that traveled by a crank alone. During the next quarter-revolution of said pocket 1 in co operation with said guard 2 and pathway in arm 30,it will continue to move the stud 3 in like manner, thus starting the bed in the reverse direction and gradually accelerating it through such compound motion, and when the pocket 1 is closely approaching and passing its lowest point of travel and the forward end of the guard 2 coincides with it, as in Fig.

5, at which time said pocket, the rack 21,and the stud 3 are moving at the same surface speed as the driving-pinion 10, the rack 21 will engage the pinion 11,.which has been moved into alignment with it, and the stud 3 having left the guard 2 and smoothlydisengaged the pocket 1, will leave the guard 2 and become free to run on unobstructedly carried by'the bed. The principal part of this printing run will then be completed: by the pinion 11 while the pinion 10 is making a complete revolution, which will bring. the

' parts into the position shown in Fig. 6, ready to begin the reversing operation, and since during this printing run or single revolution of pinion 10 the spring-rods 31 32 will have vi brated the lev'erL, so as to depress the lever, its stud 6 will now be presented in the lowest position properly aligned to enter the pocket 1 and be carried between it and the guard 2. W'hcn the said pocket 1 is again closely approaching and passingits lowest point of traveland the tail of the guard 2 coincides in position with it, as in Fig. 6, at which time said pocket, the rack 21, and stud 6 aremoving at the surface speedofthedriviug-pinions1011,therack 21 will leave the pinion 11 and the stud 6 will simultaneously enter the pocket 1 and pass be hind the said guard 2, and while the pocket 1 is making a quarter-revolution it will carry the stud 6 in the curved or crank pathway formed by the guard 2 and compel the stud 7 to travel in the reversed curved pathway in the. arm 40, thus through a compound movement imparting tothe bed a motion which gradually retards it and brings it to a state of momentary rest, as in Fig. 7, which is the limit of its inward or printing movement. the next quarter-revolution of the pocket 1 it will continue to move the stud G in the curved or crank pathway formed by the guard 2 and move the stud 7 in the reversed curved pathway in the arm 10, thus starting the bed-in the reverse direction and gradually acceler ating it through acomponnd :FIOliiJihCtLllSiilg it to move in the direction of. the horizontal arrow in Fig. 8, and when the pocket 1 is closely approaching and passing higi point of travel and the head of the guard coincides with it, as in Fig. 8, at which time said pocket, the rack 22, and stud (3 are moving at the same surface speed as the driving pinions 10 11, the rack 22 will engage the pinion 11, Which-has then moved into proper alignment with it, and the stud 0' will sunnitaneously disengage from the pocket-1 and pass out from the head of the guard F Th9. bed will then have been reversed and will carried through the major part dfiits non:- prin'ting movement, during wi'iicl'gfn'it will lie solely driven by the pinion ll th'rough the rack22 while the pinion 10 makes one rey'dlution, the stud 6 then moving free and being XIO carried with the bed. At the end of the major part of this non-printing movement the parts will have arrived in the positions of Fig. 9, ready for reversal, and the operation 5 described will be repeated.

The guard-disk is provided .with a dupli' cate guard 4, arranged opposite to the guard 2, which latter has been described as the active guard. When the active guard,'as 2,'is disabled or worn, the guard, as 4, may replace it by slipping the gears, and at all times the inactive guard acts as a counter-balance for the active guard. 1

It is only necessary to add that the cam 26 operates during the time consumed by the reversing operation at each end of the run of the bed, to slide the pinion 11 laterally and bring it into alignment with the proper rack with which it is to next thereafter engage.

Herein the rack-and-pinion mechanism embodies two racks and a single pinion. It is obvious that other constructions may be used, as is explained and illustrated in my application, Serial 'No. 421,914, filed February 8, 1892. a

It may now be stated that the curved guide or 40 may, instead'of having a slot, be a singl member, against which the stud, as 5 or 7, cars, or that .it might be'embraced by a stud bearing on its opposite sides. It may also be remarked that, while such curved guides may be entirely omitted, their use is preferred.

Of course the pocket-disk might be an arm of dimensions sufficient to carry the semicircular pocket 1, and the terms pocket, disk, or pocket-disk are therefore to be regarded as embracing such a construction, and since to attain its normal position, as in Figs. 6 and 9, it is always the same end of the lever which must be depressed,that end might be given a, preponderance of weight as a substitute for the spring-rods; but the latter are more positive and certain in action, and therefore preferred.

The lever might be divided so as to con- ,stitute two levers separately pivoted to-the bed and geared together, so as to be automatically operated to bring their ends into correct positions for their repeated operation. This is shown in my application, Serial'No. 432,302, tiled May 9, 1892, and therefore is only claimed herein as covered by the broad scope of the claims.

it will be obvious that this invention is applicable in part or in whole wherever a recip rocating member is employed in machines other than printing-machines-as, for instance, in a planer.

\Vhat is claimed is 1. 'llie oombination, with the moving bed, of a swinging lever hung to the bed, a revolv ing disk having a pocket, and a revolving guard co-operating with said pocket to engage the end of said lever and reverse the movement of the bed by retarding, stopping,

starting, and accelerating the seine by a cranklike motion, substantially as described.

bed, of a swinging lever hung to the bed, a revolving disk having a pocket, and a revolving guard co-operating with said pocket to alternately engage opposite ends of said 1ever and reverse the movementof the bed at each end of its run'by retarding, stopping, starting, and accelerating the same by a crank-like motion, substantially as described. 3. The combination, with the moving bed, of a swinging leverhung to the bed, a revolving disk having a pocket, a revolving guard coacting with said pocket to engage the end ofsaid lever, and a curved guide in which said lever end travels, whereby the travel of the bed is reversed by retarding, stopping, starting, and accelerating the same through a compound movement, substantially as described.

4. The combination, with the reciprocating bed, of a swinging lever hung to the bed, a revolving disk having a pocket, a revolving guard coacting with said pocket to alternately engage opposite ends of said lever, and

which the opposite ends of the lever travel, whereby the motion of the bed is reversed at each end of itsrunbyretarding, stopping, starting, and accelerating the same through compound movements, substantially as described.

The combination, with the bed and a 'i'ack-and-pinion mechanism for driving it during the major part of its runin either direction, of a swinging lever hung to the bed, a revolving disk having a pocket, and a revolving guard co-operating with said pocket to engage the end of said lever and reverse the movement of the bed by retarding, stopping, starting, and accelerating the same bya crank-like motion, substantially as described.

rack-and-pinion mechanism for driving it dur-, ing the ma3or part of its reciprocation, of a disk having a p0cket,'and a revolving guard co-operating with said pocket to alternately engage opposite ends of said lever and reverse the movement of the bed at each'end of its run by retarding, stopping, starting, and accelerating the same by a crank-like motion, substantially as described.

7. The combination, with the bed and a either direction, of a swinging lever hung to the bed, a revolving disk having a pocket, a revolving guard coacting with said pocket to engage the endof said lever, and a curved guide in which said lever end travels, whereby the travel of the bed is reversed by retarding, stopping, starting, and accelerating the stantially as described.

8. The combination, with the bed and a rack-and-pinion mechanism for d rivi n g it dur- 2. The combination,with the reciprocating a curved guide at each end of the bed, in.

rack-and-pinion mechanism for driving it in I 6. The combination, with the bed and a.

IIO

swinging lever hung to the bed, a revolving same through a compound movement, sub- 7 swinging iug the major part of its reciprocation, of a lever hung to the bed, a revolving disk havinga pocket, a revolving guard 00- acting wit-h said pocket to alternately engage opposite ends of said lever, and a curved guide at each end of the bed, in which the opposite ends of the lever travel, whereby the travel of the bed is reversed at each end of its run by retarding, stopping, starting, and accelerating the same through compound movements, substantially as described.

9. The combination, with the revolving pocket-diskP and revolving guard 2, of the rocking lever L, and spring-rods 31 32, substantially as described;

10. The combination, with the pinion-racks 21 22, pinion 11, revolving pocket-disk P, and

cam 26, of means coupling said cam and pinion and gearing connecting the said pinion and disk, whereby timely relative cooperation is accomplished, substantially as described.

11. The combination, with the pocket-disk,

guard-disk, pinion 10, and shaft 12, of gears ing connecting the two and proportioned to impart to said disks difierential rotative movements, substantially as described.

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

LUTHER C. CROVVELL.

Witnesses; NATHANIEL A'r WOOD, G. R. STEDMAN.

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