US1306419A - evensen - Google Patents

Description

W. M. EVENSEN.

SAM.

APPLICATION FILED JULY 26. I917.

1,306,419. Patented June 10, 1919.

2 SHEETS-SHEET lw. M. EVENSEN.

Patented June 10, 1919.

2 SHE ET8-SHEET 2.

V UNITED STATES PATENT OFFEQE.

WILLIAM 1vI. vENsEN, or CHICAGO, ILLINoIs, AssIeNoR r0 Goss PR NTING rRnss 1 COMPANY, A CORPORATION OF ILLINOIS.

CAM.

Specification of Letters Patent. Patented June 10, 1919.

Original application filed. May 16, 1916, Serial No. 97,793. Divided and this application filed. July 26, 1917.

. Serial No. 182,829.

To all whom z't may concern: Be it known that I, VVILLIAM M. EvnNsEN, a citizen of the-United States, residing at Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvementsin Cams, of which the following isa specification.

The invention relates to a cam for giving a variablelthrow or travel to the actuated or driven part or mechanism, and. to such a cam having means or capabilities for very nice and reliable adjustment of the kind described.

Objects of the invention will beset forth hereinafter in part, and in part will be obvious herefrom, saidobjects being attained through the means and combinations pointed I out in the accompanying claims.

This application is a dlvislon of applicationSer. No. 97,793, filed May 16, 1916.

.The invention consists in thenovel parts, constructions, arrangements, combinations and improvements herein shown and described. n

The accompanying drawings, referred to herein and forming a part hereof, illustrate one embodiment of the invention, the same serving in connection with the description herein to explain the principles of the invention.

Of the drawings Figure 1 is a fragmentary elevation of a portion ofa printing press, with parts omitted, said figure showing a mechanism constructed in accordance with theprinciples of the invention; t

Fig. 2 is a fragmentary View of the cam 1 and connections looking at Fig. 1 from the right; I Fig. 3 is a detail edge View, on an enlarged scale, of the cam for operating the vibratingfeed roller; 7

Fig. 4 is a face view, also on an enlarged scale of the cam, looking at Fig.3 from the left; a

Fig. 5 is a face view of the camhub,

likewise on an enlarged scale;

. Fig. 6 is a face view of. the cam;

-Fig. 7 is an edge view of the cam looking at Fig. 6 from the right; and

Fig.8 is a horizontal central section on the line A E of Fig. 4.

In the parent application filer. its, 97 5? 93,

hereinbeforc referred to, the preferred embodiment of the cam was illustrated and described as a part ofthe inking mechanism of a printing press, and in the present exemplification the same application of the cam is preserved, although it will be understood that the cam is useful in other connections and for other purposes.

Referring by way of example to the accompanying drawing, as an exemplification ofone application or use of the cam, an ink fountain is represented by numeral 1, and the fountain roller therewithinby 2. The ink drum 3. cooperates with the usual distributing or vibrating rollers (not shown), and these distributing rollers in turn cooperate with and ink the form rollers, which latter ink the forms upon the cylinders in a ,well-knownmanner.

I The ink feeding roller 4 swings to and fro between the fountain roller 2 and the ink drum 3, conveying periodically a small quantity of ink from the fountain roll to the ink drum, the ink being carried forward from thelatter to the form rollers in the manner and by the mechanism briefly indicated above. The fountain roll 2 is intermittently rotated for a short distance from time to time in the usual manner. The roller 4 is supported by its pintles 5 in notches or recesses in the upper end of arms 6, the roller 4 being held in position by latches 7 which latches are mounted on the arms 6, and engage the pintles 5 of the roller 4. The roller-carrying arms 6 are located within the press frame 8, and are fixed to a rock shaft 9, which shaft is journaled transversely in the press frame (only one of the arms 6-and one end of the roller 4 being shown in the drawings).

1 The actuating means for the ink feeding roller 3 comprises means included in the connections between the roller and itscam for varying the angular relation in either direction of the roller with respect to the cam, thereby regulating and changing as desired the length of travel of the ink-feeding roller in either direction. In the embodied form of such means, the arms 6 are fixed to the shaft 9 in a' suitable manner preferably adjustably bymeans of set or clamping screws 10. The end of the rock shaft 9; extends outside as press frame 8,

and from such'outside end of the shaft 9 ex tends a lever arm 11, which is fixed to the shaft in ,a suitable manner, as by a key or feather 12. The outer endofl'ei er 11 has formed therein an elongated slot 13 and at cal pinQO, the iiiiie'r en'd ofthe screws 16 and 17 eiigaging with the pin '20 on opposite sides' thereof; By turning screii s an'd thetray'el of theiiik-feedingroll be lei'i' the ned or shortened towardeithr the fountain roll or theiiifl: dru1i1,the liec tire length of the rod'b'eing the setting of the screws to e'fiect thi'sresiflt; The pin 20 is attached to the upper end 7 Qfjt rod 21*, said fed at upper end haying an enlarged circular head 22 w th aface P i the 'slfatft and aem prepe'r; 'pte ferab'y en foiifitain rolle bearing against a coi respoi ding face upon the head or end of the le've'rarin 11. The rod 21, atit's lower end, is' formedas ayoke 23, straddling a shaft 24;, which shaftis cai' ried in suitable bearings 25 uponthe n 1a-, chine frame. The yoke carries af c'amlroll 26, said cam roll engaging the rind or periphery ofa cam 27, whichis fixed to and rotates withthe shaft 24'. lUpon the opposite side ofthe yoke 23 a collar 28", encirf cling the shaft 24,a'1id humane the ye e in position withth'e cain roll 26 engagil'ig the can; The shaft 25is a. suitable manner, as by beveled gears 29, from the Shaft 30. It will be s'eerr that by tprningthe screws and 17, the angular relation in either direction ofthe arm 11 to the rod 21 and [to the ca n 2 7 may be determin'edand regulated as desired.

accordance with cei'tain features of the H.,=,,:.,/ m 1 1'. v y invention, means are provided for vary ng the diain'etral relation of thjjeq 27 and its and also for positioning the ea'ni angularly up'o'n ifts shaft. Byth'ese yarioifs means, the extent and locatioii of the path oftravel of the oscillating ink 'feeding roller may be Varied and determined, the amount or degree of contactand piressure b'etweeii the ink feeding roller and the ink fountain rollerjand between the ink feeding roller and theifik' drum be niicely acclir'a'tely niaihtaiiied and regulated despite l fit q s n w S z f. fi j nk f ili roller, and at the same time the ink X feeding roller is under 'co'n'trol throilghout its entire f li if fl a H y ,Pml nlin'g s m.- Ilfil'l [if the supplying l oller against the "fr the ink drum. 7

ed form of the th ere 'i's totanjd' with circling the sl'iaft. andIprovidihg bearing or contacting surface all the way around its periphery, thereby keeping the oscillating ink feeding ro llerain'dei control atall times, the being diametrally Variable or positionable relatively to the hub and to its shaft. In such embodied form, the hub- 35 has a central opening 36 through which passes the shaft 24. The hub is held iiifi'Xed l'ai'ly-adjustable about itsshaft by suitable means, such as clamping or binding screws threading into the-raaiaiiy armnged aper uiidereut part, arranged centrally across the hexieled so to fitsnugl'y and to be Held by and toslide within the'ui'fdercutedges 40' and 41 of the hub, as shown'best in Fig;

Thec'ain has its internal aperture 48' co n-V siderably larger than thei'ntrnal' aperture 7 8'6 of the hill) and likewise considerably larger thanthe di'aifiet'ei o'f the shaft 24. Thus the cam may *s'lide along the face of the hub, changing the diam'etral relation there (if, the relati'o'nof the centers of the and its shaft respect toeach" V ith q r a rs are Proyided the mvent enf r accurately and nieely-var lng and daerm' ing the relation of the cam to its shaftgaifd in the embodied form uii-eefyat pin 53 is fixed in the ca 'n 27 and pro1ects from the inner face thereof lnto anoperim'g 54, of

larger size, formed in or assing through V the hub 35. The 'jbiri' 53 in its projecting portion, has formed therethroi'ighran ir'iter-- nally threaded 'o'jiei'iing lnthis'i'n tern'ally threaded opening 55 engages a sci-aw 5'6,-

which screw has a head 57 within a radially dispb se d cyli'fidri'cztl dpi'liiig "58 in the hub 35. The screw 56 is held in stationary po'sition longitudinally with respect to the-Hub 35, being re to rotate, afid sho fwn piiis 6'0 and 61 are drii en i'espedtiyelythrough holes, passing through the lli'ib either eat at the *eyi'i aacu Opefimg 58,, said pins rejecting for substantially Half their diameters into :rou'ifded. aniiulfar gretve 63 ter ed in tIiehead 57 of the screw 5 6. The is tii'riiedin asuitable' manner; and fire feral) y afi gtila ily shaped recess form in'tlie' tap "(if the head? When the screW 56 is turned, it is free to rotate with respect to the hub 35, but is longitudinally fixed relatively to the hub. As the screw 56 is rotated, by reason of its threaded engagement with the pin 53, the cam proper is moved in the guideway on the face of the hub either to the right or the left in Fig. 8. The central opening of the cam being larger than the shaft 24, and the opening 54 in the hub being larger than the pin 53, the cam can slide upon the hub and be accurately positioned by the screw, While the cam is held to the hub by the dovetail connection.

It will thus be seen that the cam has a very wide range of regulation or adjustability with the utmost degree of exactness and nicety, and at. the same time the parts are held accurately and fixedly in position, and that the throw of the cam may be varied as desired, the cam roll on the rod at all times being permitted to follow the periphery of the cam and thus keep the movement I .of the oscillating ink feeding roll under absolute control, and nicely regulating and determining its travel toward and its contact with both the fountain roll and the ink drum.

There is thus provided by the invention a cam actuated and governed mechanism for continuously controlling the movement of the fountain feed roller lever on this type of press, and at the same time giving a variable throw or length of travel to the feed roller, so that the throw can be increased 0r decreased as the composition roller varies in diameter, thereby maintaining at all times the desired impingement against the fountain roller, and also the desired impingement against the ink drum.

By the screw regulation at the end of rod 21 the location of the ends of the path of travel of the ink feeding roller 3 may be changed and determined, and thereby the degree of contact of the roller 3 With both the ink drum and the fountain roll is controlled despite variations in the size of the ink feeding roller. By the positioning or adjustment of the cam upon its shaft the total extent of the path of travel of the ink Copies of this patent may be obtained for five cents each, by addressing the feeding roller may be varied, regulated and determined, thereby compensating for variations'in the size of the ink feeding roller. The cam roller is designed to follow the cam at all times to continuously control the ink feeding roller and to prevent slamming and loose motion thereof, and by changing the diametral relation of the cam and its shaft the low and high parts of the cam are varied together to maintain this relation while at the same time securing proper regulation of the location and extent of the path of travel or oscillation of the ink feeding roller.

From all the foregoing it will be understood that a mechanism has been supplied realizing the objects and advantages herein set forth, together with other objects and advantages. It will be further understood that changes may be made from the precise con struction shown and described, without departing from the principles of the invention and without sacrificing its chief advantages. That I claim as my invention and desire to secure by Letters Patent is 1. A cam mechanism including in combination a shaft, a hub, mounted upon and rotating with the shaft and having a guideway formed in ,,its flat side, a cammember embracing the shaft and movable along said guideway to vary its diametral relation to the shaft, said cam member having a screw-threaded hole therein, and a rotatable screw mounted against longitudinal movement on the hub and threaded into said screw-threaded hole.

. 2. A cam including in combination a shaft, a hub, mounted upon and rotating with the shaft and having a guideway formed in its flat side, a cam member embracing the shaft and movable along said guideway to vary its diametral relation to the shaft, there being a recess in the hub and a part prQJecting from the cam member into the recess and having a screw-threaded hole therein, and a screw mounted in the hubagainst longitudinal movement and threaded into the hole in said part projecting from the cam member. In testimony whereof, I have signed my name to this specification.

WILLIAM M. EVEN'SEN.

Commissioner of Patents,

Washington, D. G.

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