US844350A - Controlling and positioning device. - Google Patents

Description

PATBNTED FEB. 19, 1907.

Y B. o. HALE.

GONTEOLLING AND POSITIONING DEVICE.

APPLICATION FILED JUNBM, 1906.

2 sEEEs-SHEET 1.

I afm/hoz i/bmm o PATBNTED FEB. 19, 1907.

B. O. HALE. GONTROLLING AND POSITIONING DEVICE.

APPLICATION FILED TUNE 14, 1906.

' 2 SHEETS-SHEET 2.

UNITEDl sfm'rns PATENT OFFICE.

BERNARD O. HALE, OFPDERBY, CON N ECTICIIT, ASSIGNOR TO FARREL FOUN- DRY & MACHINE COMPANY, OF NEW HAVEN, CONNECTICUT, A CORPO'' RATION O F CONECTICUT.

CONTROLLING vAND POSITIONING DEVICE.

Specification of Letters Patent.

Patented Feb. 19, 1907.

Application filed June 14,1906. Serial No. 821,711.

To 1J/Z whom t may concern:

Be it known that I, BERNARD O. HALE, a citizen of the United States, residing at Derby, county of New Haven, and State of Connecticut, have invented certain new and useful Improvements in Controlling and Positioning Devices, fully described and represented in the following specification and the accompzmying drawings, forming apart of the same.

This invention relates to certain improvements in roll controlling and positioning devices, the devices being particularly applicable to constructions in which'large and heavy rolls are employed.

In constructions of the character referred to-such, for instance, as calender-rolls, mills, &c., in which large and heavy rolls are employed-the rolls are made adjustable to zo determine their working relation invarious ways. A common mode of adjustment is by em loying screws which are connected to the sli ing bearings in which the rolls are mounted. If, however, foreign bodiessuch, for instance, as stones or bolts-happen to get in the material passing between theb rolls it is necessary to prevent breakage to separate the rolls. Where the screw adjustment is employed, the separation of the rolls is necessarily slow and requires considerable time to effect, so that a slowing down or stoppage of the rolls is necessary. This of course consumes valuable time and decreases the output of the rolls.

It is one of the objects of this invention to produce an improved roll controlling and ositioning device for constructions in which arge and heavy rolls are em loyed in which one of a pair or series of rollls shall beprovided with means for adjusting it to determine its Working position, means being further provided for moving the adjustedroll into and out of working position without disturbing the ad'ustment.

A. further object of the invention is to produce an improved roll controlling and positioning device for constructions in which large and heavy rolls are em loyed in which devices are provided for a justing one or more of the rolls with accuracy, the construction being, further, of such a character that the rolls are maintainedin working relation by a cushioned pressure in excess of the normal load on the rolls and being also provided with means to enable the rolls to be quickly separated, if desired, and then moved bac into the adjusted position without disturbing the adjustment. With these and other objectsjn view the mvention consists in certain constructions and in certain parts, im rovements, and combinations, as will be ereinafter fully described and then specifically pointed out.

Referring to the accompanying drawings, Figure 1 represents in side elevation a calenderingmachine embodying the invention. Fig. 2 is a front elevation ofthe construction shown in Fig. 1. Fig. 3 is a detail section, on an enlarged scale, of the upper part of thel calender-roll, the plane of section' being Indicated by the line 3 3 in Fig. 1. Fig. 4 is a section on the line 4 4 of Fig. 3. Fig. 5 is a section on the line 5 5 of Fig. 3.

The machine which has been selected to illustrate the invention is a calendering-machine of the four-roll type, although it will be understood that the invention may be embodied in other machines.

In the drawings the frame consists of two uprights or side frames 1, these frames serv- 1n to support in suitable bearings calenderro ls 2, 3, 4, and 5. In machines constructed in accordance with the invention one or more of the rolls will be provided with means whereby the working position of the rolls Will .be determined and also with means for movin'g the adjusted roll into and out of working position without disturbing the adjustment. In the construction illustrated the upper and lower rolls are thus made movable and adjustable.

The means for adjusting the position of the rolls may be varied within Wide limits. In the particular construction illustrated the upper end of each side frame is provided with a castin 6, which is cored out to form a chamber 7, t ese chambers bein closed by covers 8 or in any other suitabe manner. Working through the chambers and through openings in the bottoms of the castings and the covers are headed rods or plungers 9, the heads 10 of these rods being secured by collars 11 to sliding bearings 12, in which the roll 2 is mounted. The adjustment of the rolls to determine their workin relation is eii'ected by the movement of t ese rods or IOS A plungers.

' able manner.

.abevel-gear 20, ywhich meshes .with a bevel- .26, secured to ..the .mainframe 4.nested tothe-shaft and disconnected therefrom by. means of clutch-eollarsflS, feathered tothezshafts and operated. by levers 19.

'The shaft 17 may be operated in any suit.- AsA shown, itis provided with pinion 21, this pinion being mounted on a standingshaft 22. The upper end of this standing shaft is securedin abearin 2.3,secured to theirame, thelower en of the .shaft being mounted in. a yoke-shaped. frame 24, secured to the side frame. 'lhis yokeshaped-.frame isprovided with a bearing in whichis mounted` a shortshaft 25,;theother end of. this. shaft .being steppedin; a bearing 25 may.be provided withanyfsuitable. operating means-fas, for instance, .a hand1e127. This shaft 25 isprovidedwith two vbeveh-pinions 28,29,.either:o.f which-maybe clutched operated roma .suitable handle 31. The bevel-pinion 28.drives a bevel-gear 32 on the lower end of the standing-shaft. 22. The

pinion29drives abevel-gear 33 ona standving shaft 34. This-standingshaft 34,is providedwith a bevel-gear 35, which ,meshes with .abevel-gear. 36 on .ashaft 37, this being the shaft by-,which the;lower.roll.5 is adjusted. The connections by which this shaft 37 .adjuststhe bearings of the roll are duplicates of the connections already described inconlnection with the roll.2,fand-therefore-need not .be furthendescribed. It be apparent that by, mcansof 1 these .connections just .describeda very exactadjustment may be obtained between the two upper and the two lower. rolls of the calender.

Machines constructedin accordance Withtheinvention will include meansfor moving-- -theadjusted roll toward and away from tthe 'otherrolh and this means -will be of'sueh a characterthatthis movement will be. effected -without disturbingthe adjustment of the adjustedroll. While the particular means for effecting-the'movement-referred tomay be varied, .as shown, the chambers 7 are utilized .as fluid-containing chambers and the plun ers 9 are provided. with pistons' 38, whic :workin these chambers, suitable packngl'ingsras 39 40, being-,provided to -make the .chambers Huid-tight. The means for ,collar 45, ,which works on the outside of the eiecting the flow of fluid into the chambers and for controlling the liow may be widely varied; but inthe best constructions, andas shown, they will be such as to enable the rolls to be held in their adjusted position by cushioned pressure. In the construction illustrated an accumulator is provided for maintaining the fluid under pressure, an ordinary form of accummulator being illustrated in Fig. 2. This accummulator includes a chamber 41, in which works a piston 42, the upperfend of this piston being provided with a cross-bar 43, to which are secured rods 44, theserods supporting a long chamber 41. -This collar supports a series. of weights '46, by which the pressure in the accummulator is obtained. Leading from the lower-part of the accumulator-reservoir is a pipe 47, this pipe dividing into two branches 48 49. The branch 48 terminates in a crosspipe 50, which is connected to an inlet-port 51, formed in a valve-casing 52, which is bolted or otherwise secured to one of the castings 6. This port communicates through a suitable opening with a port 53, this port 53 being in register with a port 54 inthe casting 6. The port 51 is also in communication with a port 55, thisport being arranged tocommunicate through a suitable opening with a port 56, which is in register with a port.57. The-port 54 opens intothe chamber 7 above oron. oneside-.of the piston 38, and the port A57 opens into thechamber 7 below4 or on4 the otherside of the piston 38, reference being now had tothat. casting 6 to which the valvecasing 52 isfsecured. The ports 53 56, further, .are arranged to communicate through suitable openings with a port 58, which isin communication with a discharge-pipe 58. The various openings with which communication is established between the ports may be controlled by any. suitable, arrangement of valves. In the construction illustrated a valve-stem 59 is^provided,this stemworking through a suitable stuiiing-box. This stem carries. a .valve 60, which controls the Yopening between'the-,ports. 51 andk 53 and a valve IOO IIO

61 -which controls .the .opening betweenthe ports 55 and 56. The 'stem carries two other valves. 62 and- 63, the valve 62 controlling-the opening between the port 53 and the port 58 .and Athe valve 63 controlling the ppem'n between the port 56 and the port 58. ith t construction it will be apparent that when the valve 60 is closed the valve 61 is. open, thus establishing communication between the accumulator and the chamber-7 through the-pipes, the dports 51 55, 56, and 57,so that the fluid un er pressure in the accumulator will raise the piston 38 on that side of the machine which 1s provided with the valve-casin When, furthermore, the valve 61 -isclose the valve 60 is opened, lthus establishing communication lbetween .the aci cumulator and the chamber 7 and the upper part of the piston 38, this communication eing through the pipes and the ports 5]., 53, and 54. It will be further understood that when the valve is closed the valve 62 nis opened,Y `establishing communication between the upper side of the chamber 7 'and the discharge-pipe, and that when the valve 61 is closed the valve 63 is opened, establishing communication between .the lower side of the chamber 7 and the discharge-pipe. It is of course apparent that the other end of the roll should be raised simultaneously. This may be accomplished in various ways. In the best constructions it will be accomplished by pi es controlled by the valves before referreciJ to. In the construction illustrated there is provided a pipe 64, which leads from.

the port 53 to the other side of the machine, this pipe entering the other casting 7 above the other piston 38. There is also provided another pipe 65, this pipe leading from the port 56 to the chamber on the other side of the machine, this pipe communicating with the chamber below it on the other side of the piston 38. It is apparent, therefore, that by the manipulation of the .valves before referred to the pistons 9 on both sides of the chamber may be simultaneously raised or lowered. It is further ap arent that'when the upper chambersare plced in communication with the accumulator the lower chambers will be in open communication with the exhaust-pipe, and vice versa.

The valvesA may be manipulated in any suitable way. In the construction illustrated there is provided a bell-crank lever 66 67, this lever being pivoted at 68 to the frame of the machine. The arm 66 of this lever is connected to a yoke 69 on the end of the valve-stem. The arm 67 forms a suitable handle Witliin easy reach of the operator, by which the valve may be manipulated.

The connections by which the lower roll is operated may be variously arranged; but they may convenientl be duplicates of those already described. s shown, the pipe 49 leads into a valve-casing 70, mounted on the frame, and the frame on each side will be provided with chambers similar to the chambers 7, in which plungers 71, similar to the plungers 9, are located, these plungers being provided with piston-heads similar to the heads 38. These plungers may be connected to the bearings of the lower roll 5 in the same manner as the pistons 9 are connected to the bearings of the upper roll. .The position of these pistons may be controlled to effect the adjustment of the rolls by means of gears 72,

operated by worms 73 on the shaft 37, before referred to.

The pipe 49 enters the valvecasing at its top in the same manner in which the pipe 50 enters the upper valvecasing. Cross-pipes 74 75 connect the chambers on the two sides of the frame in the same manner as the uppercasings are connected by the pipesr 64 and 65. The valves and ports -in the'casing 70-may be duplicates of the valves and ports inthe casing 52, and these valves may be operated from a bollcrank lever 76 77, pivoted to the frame at 78, the arm 76 of this lever being connected to the valve-stem by a link 79. It will be understood that the )ressure maintained by the accumulator will fie greater than thel normal load between the rolls and that when the ma- 'chinc is running the valve 60 in the upper valve-casing and the corres )onding valve in the lower valve-casing will be open. 'lhe j rolls 2 and 5 are therefore held in position by a cushioned pressure which is in excess of the normal load between the rolls, the position in which the rolls are held being determined by the adjustment of the plungers 9 through theworm-wheels before referred to. Should, therefore, any foreign body pass between the rolls unseen by the operator, the rolls can yield and would yield against the pressure of the accumulator. If, however, the presence of a-foreign body is detected by the operator, the rolls can be immediately separated and then thrown back into working relation, and this may be accomplished without disturbingr thev adjustment of the rolls, inasmuch as after either roll has been separated from its companion roll it'will be moved back by the proper operation of the valves into the position of adjustment it occupied before the separating movement occurred.

. Changes and variations may be made in the construction by which the invention is carried into efl'ect. The invention is not, therefore, to be limited to the exact construction herein sliown and described.

v What is claimed is- 1. The combination with a pair of rolls, of sliding bearings in which one of the rolls is mounted, a pair of plungers connected with the bearings, means for adjusting the plungers to determine the working position of the rolls, and means for operating the plungers to move the roll mounted in the sliding` bearing into and out of working position without disturbing the adjustment.

2. The combination with a pair of rolls, of sliding bearings in which onev of the rolls is mounted, a pair of threaded plungers connected to the bearings, adjusting-nuts whereby the working position of the rolls may be determined, and means for operating the plungers to move the roll mountedv in the sliding bearings into and out of working position without disturbing they adjustment.

3. The combination with a pair of rolls, of means for adjusting one of the rolls to determine the working position of the rolls, and

ICC

Huid-operated means for moving the adjusted roll into .and out of working position without disturbing the adjustment.

4. The combination with a pair of rolls, of

sliding bearings in which one of the rolls is mounted, a pair of plungers connected with the bearings, means for adjusting the plungers to determine the working position of the rolls, and Huid-operated means for operating the plungers to move the roll mounted in the sliding bearings into and out of Working position without disturbing the adjustment.

5. The combination with a pair of rolls, of sliding bearings in which one of the rolls is mounted, a pair of threaded plungers connected to the bearings, adjusting-nuts whereby the Working position of the rolls may be determined, and fluid-operated means for operating the plungers to move the roll mounted in the sliding bearings into and out of Working position without disturbing the adjustment.

6. The combination with a pair of rolls, of sliding bearings in which one of the rolls is mounted, plungers connected to the bearings, means for adjustingthe plungers to determine the working position of the rolls, fluidcontaining chambers through Which the plungers move, piston-heads mounted on the plungers, and means for admitting fluid under pressure on either side of t'he piston-heads in the chambers, whereby the roll in the sliding bearings may be moved into and out of Working position without disturbing the position. ofthe adjustment.

7. The combination with a pair or rolls, of sliding bearings in which one of the rolls is mounted, threaded plungersvconnected to the bearings, mechanically-operated nuts 3 5 for adjusting the Working position of the rolls, fluid containing chambers through which the plungers move, piston-heads mounted on the plungers, and means for admitting Huid under pressure to the chambers on either side- 4o of the heads.

8. The combination with a pair of rolls, of sliding bearings in which one of the rolls is. mounted, threaded plungers connected to the bearings, mechanicallyoperated nuts, 45 tor adjusting the Working position of the rolls, Huid containing chambers vthrough which the plungers move, piston-heads mounted on the plungers, an accumulator for maintaining fluid under ressure, and means for 5o delivering the fluid om theaccumulator to the chambers on either side of the pistonheads.

In testimony whereof I have hereunto set my hand 1n the presence of two subscribing 55 witnesses.

BERNARDO. HALE.

i Witnesses:

LAWRENCE K. BLACKMAN, H. J. DEVENPORT.l

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