US2421484A

US2421484A - Pneumatic gaging machine for selecting rolls according to size

Info

Publication number: US2421484A
Application number: US596016A
Authority: US
Inventors: Blaise L Diamond
Original assignee: TYSON BEARING CORP
Current assignee: TYSON BEARING Corp
Priority date: 1945-05-26
Filing date: 1945-05-26
Publication date: 1947-06-03
Anticipated expiration: 1964-06-03

Description

June 3, 1947. B. L. DIAMOND 2,421,484

PNEUMATIC GAGING MACHINE FOR SELECTING ROLLS ACCORDING TO SIZE Filed May 26, 1945 3 SheetsSheet 1 Bnveutor L BB Blaz'se L.Dz'am0nd June 3, 1947. B. DIAMOND PNEUMATIC GAGING MACHINE FOR SELECTING ROLLS ACCORDING TO SIZE Filed May 26, 1945 3 Sheets-Sheet 2 June 3, 1947. B. DIAMOND PNEUMATIC GAGING MACHINE FOR SELECTING ROLLS ACCORDING TO SIZE Filed May 26, 1945 3 Sheets-Sheet 3 Patented June a, 1941- PNEUMATIC GAGING MACHINE FOB SE- LECTING ROLLS ACCORDING TO SIZE Blaise L. mamond Detroit, Mich, assignor to Tyson Bearing Corporation, Massillon, Ohio, a

corporation of Delaware Application May 26, 1945, Serial No. 596,016

1 13 Claims. My invention relates to roll gauging machines particularly adapted for gauging rolls for tapered roller bearings, and more particularly the invention relates to a combined roll gauging and selecting machine, whereby rolls passing through the machine are gauged and selected into a plurality of groups according to their respective sizes.

In usual roll gauging machines, either electrical contact or mechanical contact or friction means have been used at each gauging station, requiring relatively complex electrical circuits and electrically actuated roll selecting means, or relatively complicated roll selection mechanisms, or friction gauging means subject to wear during continuous use and being relatively difflcult of adjustment in order to select rolls within very close diametrical limits.

The objects of the present invention include the provision of an improved roll gauging machine, preferably in the form of a combined roll gauging and selecting machine, and in which the gauging is effected by pneumatic or dynamic fluid means, and in which the selecting is likewise effected by pneumatic or dynamic fluid means, whereby a simplified arrangement and construction of the improved machine may be attained, whereby high precision roll gauging and selecting operations may be carried out, and whereby adjustments and maintenance of the machine are relatively easy and economical.

The foregoing and other objects are attained by the roll gauging machine, parts, combinations, and sub-combinations, which comprise the present invention, the nature of which is set forth in the following general statement, and preferred embodiments of which together with their mode of use are set forth by way of example in the following description, and which are particularly and distinctly pointed out and set forth in the appended claims forming part hereof.

The nature of the improved roll gauging and selecting machine of the present invention may be stated in general terms as including a base, and a turntable operatively mounted for rotation on the base about an axis extending upwardly and downwardly and which is preferably vertical.

- The turntable is preferably of the general form of a large cone for a tapered roller bearing and having an upper conical side face below which extends radially outwardly an annular rib havin a conical upper face at an acute angle with the conical side face.

Arcuate sections of the turntable conical side face and rib each constitutes a roll seat havin a roller end support provid d by the conical side face and a roll end support provided by the rib.

An air ej ecting duct is provided on the turntable for each roll seat, each air ejecting duct having a discharge opening at one side of the roll seat and an intake opening located to sweep over portions of the base.

An air supply duct is provided in the base and has an outlet opening located for registry with the air ejecting duct intake opening, and the base air supply. duct also has an inlet opening.

A gauging nozzle is mounted on the base, and the gauging nozzle has a chamber and a chamber discharge opening directed across the roll end support and towards the roll side support of the roll seat.

Means are provided for supplying compressed air to the gauging nozzle chamber, and differential pressure operated valve means are interposed between the gauging nozzle and the base. The differential pressure operated valve means include a valve, differential pressure operated valve opening and closing means operatively connected with the nozzle chamber and with the valve, a valve inlet and a valve outlet for the valve, a duct connecting the valve outlet with the base air supply duct inlet opening, and means for supplying compressed air to the valve inlet.

A pressure gauge may also be communicatingly connected with the gauging nozzle chamber and the pressure gauge and the differential pressure operated valve opening and closing means each constitute means actuated by pressure changes in the gauging nozzle chamber, the pressure changes being produced by a roll on a roll seat being transported across the air jet ejected from .the nozzle.

By way of example, embodiments of the improved combined roll gauging and selecting machine and improved parts therefor of the present invention are illustrated in the accompanying drawings forming part hereof, in which Figure 1 is a top plan view of one embodiment of the improved roll gauging and selecting machine;

Fig. 2, an enlarged elevation view of one of the improved gauging nozzle assemblies of the ship with each other; and

F18. 4. an enlarged fragmentary top plan view similar to Fig. 1, with portions broken away for more clearly illustrating details of construction and arrangement.

Similar numerals refer to similar parts throughout the several views.

The improved roll gauging machine indicated generally by Hi includes stationary members indicated generally by H provided with an upwardly opening tapered bearing sleeve |2 whose inner bearing surface I3- is conical with its larger base end at the upper end H of the bearing sleeve |2. The end face |5 of the bearing sleeve I2 is horizontal and is perpendicular to the vertical axis indicated by the dot-dash line l8 of the conical inner surface of the bearing sleeve |2.

A generally circular rotatable roll carrying table indicated generally by I! has a lower flat face l8 in rotary bearing abutment with the upper face |5 of the bearing sleeve l2, 2.; i from the lower face l8 of the roll carrying table ll, a conical stem l9 extends downwardly and has an outer conical surface 28 fitting in rotary bearing abutment with the inner conical bearing surface |3 of the bearing sleeve I2. The rotatable table II and its bearing stem l9 thus are rotatably mounted in the bearing sleeve I2, and are operatively connected by means not shown for power drive rotation about the vertical axis I5, and such operative connection and power drive means may be similar to that set forth in the S. A. Strickland U. S. Patent No. 1,882,374.

The roll carrying table I! is generally in the shape of a relatively large cone for a taperedroller bearing, and formed with peripheral portions including an upper conical surface 2| having a larger lower end 22 below which extends outwardly an annular rib portion 23 of the table I! having upper faces 24 including portions in a conical surface at an acute angle withthe conical surface 2|, so that a tapered roll for a roller bearing for being gauged by the gauging machine In may be seated as indicated by dot-dash lines 25 in Fig. 3 with its large end down and resting on the rib surfaces 24 and with one element of itsconical side surface resting against the conical surface 2|.

At each of a plurality of circumferentially spaced roll seating stations on the peripheral portions of the roll carrying table II, there is formed in the table I! an air ejecting duct, which as shown includes a horizontally and radially extending bore section 25 whose outer circular end 21 terminates in the conical surface 2| at a location spaced above the rib 23. The inner end 21' of the bore section 25 connects with the side of the upper end 28 of a, slanting bore section 29 extending downwardly and outwardly to a lower end opening 30 in the lower face |8 of the roll carrying table II.

For the purposes of the present improvements, the lower face l8 of the annular table I! has formed therein a plurality of downwardly opening arcuate grooves 3|, each connecting with the lower end 38 of one of the bore sections 29.

The stationary members indicated generally by H, as shown, include around the upper end of the bearing sleeve I2 and below the grooves 3| and duct or bore openings 30, a circular ring member 32 having a flat upper face 33 continuous with the upper face l5 of the bearing sleeve 2, and the flat upper face 33 of the ring member 32 is thus in bearing abutment with the lower face l8 of the rotating table IT.

The ring member 32 has formed therein a plurality of slanting bores 34 each having an upper end 35 which registers with the grooves 3| and the lower ends 38 of the bore sections 25 of the table l'I during rotation thereof. Each bore 34 has a lower end 35111 the bottom face 31 of the ring member 32.

The stationary members H, as shown, furthermore include below the ring member 32, a larger ring member 38 having an upper face 33 whose inner portions abut against the lower face 31 of the ring member 32, and there is formed in the ring member 38 a plurality of vertical bores 48. each having an upper end 4| connecting with the lower end 35 of one of the bores 34, and each bore 40 having a lower end 42 within the body of the ring member 38. There is also formed in the ring member 38 for each of the vertical bores 48, a horizontal bore 43 having an inner end 44 connecting with the side of the lower end 42 of the paired vertical bore 48, and each horizontal bore 43 as shown terminates in the outer cylindrlc side face 45 of the ring member 38 in an enlarged internally threaded counter-bore 45.

On the top of the ring member 38, are mounted a plurality of circumferentially spaced gauge nozzle assemblies each indicated generally by 58 and including an inverted U bracket 5| having a transverse base 52 secured to the ring member 38 upon the top face 38 thereof and radially spaced beyond the side peripheral faces of the roll carrying table II. From opposite ends of the transverse base 52 there extend upwardly parallel legs 53, and in the upper end of each parallel leg 53 is formed a horizontal bearing borga54 aligned with, the bore 54 in the opposite leg A nozzle mounting block 55 extends between the upper ends of the legs'53 and is mounted therebetween for rotation about a horizontal axis, as shown by means of a trunnion cap screw 55 for each leg 53, the trunnion cap screw 55 extending through the bearing bore 54 of its mounting leg 53, and being screwed into a suitable threaded socket formed in the adjacent end of the mounting block 55.

The mounting block 55 as shown preferably has flat parallel faces 51 on opposite sides of its horizontal axis of rotation, and a cylindrical bore 58 extends through the mounting block 55, the axis of the cylindrical bore 58 preferabiy intersecting the horizontal axis of rotation of the mounting block 55, and the axis of the cylindrical bore 58 also preferably being in a radial plane passing through the vertical axis of rotation I6 of the table II.

Eachgauging nozzle assembly 50 furthermore includes a gauging nozzle indicated generally by 60 and including an elongated tube 5| having formed therein a bore 52. The tube 5| is provided with external threads 53 extending from the discharge end 54 of the tube 53 to an enlarged connector head 85. The threaded portion of the tube 5| extends and fits in the bore 58 of the mounting block 55, and nuts 55 screwed on the threads 63 of the tube 8| on opposite sides of the mounting block 55 provide for longitudinal adjustment of the nozzle towards and away from the turntable II.

In a threaded counterbore in the discharge end 8301 the tube 6| is screwed a nozzle tip 51 having a nozzle chamber discharge opening 58 formed therein. In a counter-bore 58 formed in the rear end of the nozzle head 55 there is screwed a plug 18, and the bore 52 of the nozzle 50 between the nozzle tip 81 and the plug Ill constitutes a nozzle chamber.

In a suitable counterbore 1| on the top of the nozzle head 88 is eommunicatins y connected a, dial pressure gauge indicated generally by I: which is of usual construction and includes a usual hand which visually indicates changes in pressure in the nozzle chamber 82.

On the opposite lower side of the head 88 in a counterbore H is screwed a diaphragm operated electric switch indicated generally by 18, which is of usual construction, and includes a difler. ential pressure actuated diaphragm,- 14 at one side of a chamber I8 which communicatingly connects with the sensing nozzle chamber 82. The diaphragm 14 has a mechanical connection with an electric switch 18 which is series connected in an electric circuit including

power conductors

11 and 18 and a solenoid actuated valve indicated generally by 18 of usual construction.

The valve 18 includes walls forming a valve chamber 88, valve sleeve means 8| operatively mounted in a vertical bore communicating with the valve chamber 88, the valve sleeve means 8| having an upwardly extending stem 82 which is provided on its upper end with an armature 88 above a solenoid coil 84. The valve chamber 88 has an inlet 88 and an outlet 88. Below the base ring member 38 is provided a pipe ring manifold 81 to which compressed air is supplied as through pipe 88. A

The valve inlet 85 of each solenoid actuated valve 18 is communicatingly connected with the a 6 towards arolltobe gaugedandselectedandcarried on one of the roll seats or the turntable 11. Such a roll is shown by dot-dash lines 28 in Figs. 3 and 4.

If the roll to be caused and selected passing any particular nomle tip 81 is of such size as to build up a sufllcient back pressure in the nozzle chamber 82, the hand of the pressure gauge I: will visually indicate such back pressure, and the diaphragm 14 of the diaphragm operated electric switch 18 will close the switch 18, energizing the solenoid and opening the valve sleeve 8! of the valve 18, whereby compressed air from the manifold 81 will flow into the base air supply ducts and out through the turntable air ejecting duct opening 21 when the particular groove 8| passes fliers-the base air supply duct upper end open- Each nozzle 88 has its own separate compressed air supply duct 85 admitting compressed air to its chamber 82. Above each set of base air supply duct bores there may be provided a roll receiving trough 88 into which any particular roll falls which is ejected from the turntable 11.

By suitable longitudinal adjustments of the several nozzles 88, the improved roll gauging and selecting machine gauges and selects at each gauging nozzle 80 any rolls having a particular diameter within predetermined limits which are manifold 81, as shown by an elbow 88, a nipple displaced from the vertical plane including the longitudinal axis of the associated nozzle 88'.

The turntable l1 rotates in the direction of the arrow 83. A roll drive pin 94 may extend radially from the conical surface 2| of the turntable I1 at the trailing side of each air ejecting duct end 21. Each arcuate groove 3| in the lower face i8 of the turntable l1 extends in the advancing direction from the lower. end 30 of its associated bore section 29.

The base air supply duct bores 43, 48, and 88 are angularly displaced from the nozzle 80, so that each air ejecting duct opening 21 passes the nozzle tip 81 before the arcuate groove 3| for the particular air ejecting duct sweeps across the upper end 35 of the base air supply duct and until the air ejecting duct opening 21 has cleared the nozzle tip 81.

In operating the improved roll gauging and selecting machine I8, portions of the turntable l1 adjacent each air ejecting duct 21 constitutes a roll seat having a roll side support formed by a portion of the turntable conical side surface 2| and a lower roll end support formed by a portion of the rib 23.

From a broad standpoint the turntable l1 thus includes a plurality of'laterally connected roll seats, each roll seat having an associated air ejecting duct. The discharge opening 88 of each nozzle chamber 82 is directed across the rib 23 and towards the conical surface 2| of the turntable i1. Each nozzle tip 81 is thus adapted to direct a jet of fluid, preferably compressed air carried past the particular nozzle tip 81 on the roll seats of the turntable l1.

The embodiments of the present invention i1- lustrated and described herein are by way of example, and the scope of the present invention is not limited to the same or to the particular details thereof, but iscommensurate with any and all novel subject matter contained herein which may at any time properly'under the United States patent laws be set forth in the claims hereof or originating herein, and the elements of any such claims are intended to include theirfunctional and mechanical equivalents.

I claim:

1. In a roll gauging machine and the like, a base, a turntable operatively mounted on the base for rotation about an upwardly and downwardly extending axis, a, roll seat on the turntable at one side of the axis of rotation, an air ejecting duct on the turntable, the air ejecting duct having a discharge opening at one side of the roll seat and an intake opening located to sweep over portions of the base, an air supply duct in the base having an outlet opening located for registering with the air ejecting duct intake opening and the base air supply duct having an inlet opening, a gauging nozzle on the base, the gauging nozzle having a chamber and a chamber discharge opening directed towards the path of the roll seat on the turntable and the roll seat including a roll side support opposite the gauging nozzle discharge opening and a lower roll end support between the roll side support and the gauging nozzle discharge opening, means for supplying compressed air to the gauging nozzle chamber, and differential pressure operated valve means including a valve, differential pressure operated valve opening and closing means operatively connected with the gauging nozzle chamber and with the valve, a valve inlet and a valve outlet for the valve, a duct connecting the valve outlet with the base air supply duct inlet opening, and means for supplying compressed air to the valve inlet.

2. In a roll gauging machine and the like, a base, a turntable operatively mounted on the base for rotation about an upwardly and downwardly extending axis, a roll seat on the turntable at one side oi the axis of rotation. the roll seat including a roll side support and a lower roll end support, an air ejecting duct on the turntable, the

air ejecting duct having a i char e Opening i the roll seat side support and an intake opening located to sweep over portions of the base, an air supply duct in the base having an outlet opening located for, registering with the air ejecting duct intake opening and the base air supply duct havin; an inlet opening, a gauging nozzle on the base, the gauging nozzle having a chamber and a chamber discharge opening directed across the path of the lower roll end support of the roll seat and towards the path of the roll side support oi the roll seat, means for supplying compressed air to the gauging nozzle chamber, and diflerential pressure operated valve means including a valve, difierential pressure operated valve opening and closing means operatively connected with the gauging nozzle chamber and with the valve, a valve inlet and a valve outlet for the valve, a duct connecting the valve outlet with the base air supply duct inlet opening, and means for supplying compressed air to the valve inlet.

3. In a roll gauging machine and the like, a base, a turntable operatively mounted on the base for rotation about an upwardly and downwardly extending axis, a roll seat on the turntable at one side of the axis of rotation, the roll seat including a roll side support facing away from the axis of rotation and a lower roll end support extending beyond the roll side support and away from the axis of rotation, an air ejecting duct on the turntable, the air ejecting duct having a discharge opening in the roll seat side support'and an intake opening located to sweep over portions of the base, an air supply duct in the base having an outlet opening located for registering with the air electing duct intake opening and the base air supply duct having an inlet opening, a gauging nozzle on the base, the gauging nozzle having a chamber and a chamber discharge opening directed across the path of the lower roll end support of the roll seat and towards the path of the roll side support of the roll seat, means for supplying compressed air to the gauging nozzle chamber, and differential pressure operated valve means including a valve, differential pressure operated valve opening and closing means operatively connected with the gauging nozzle chamber and with the valve, a valve inlet and a valve outlet for the valve, a duct connecting the valve outlet with the base air supply duct inlet opening, and means for supplying compressed air to the valve inlet.

.4. In a roll gauging machine and the like, a base, a turntable operatively mounted on the base for rotation about an upwardly and downwardly extending axis, a roll seat on the turntable at one side of the axis of rotation, the roll seat including a roll side support and a lower roll end support, an air ejecting duct on the turntable, the air ejecting duct having a discharge opening in the roll seat side support and an intake opening located to sweep over portions of the base, an air supply duct in the base having an outlet opening located for registering with the air ejecting duct intake opening and the base air supply duct having an inlet opening, a gauging nozzle on the base, the gauging nozzle having a chamber and a chamber discharge opening directed radially of the axis of rotation and across the path of the lower roll end support of the roll seat and tobase, a turntable operatively mounted on the base for rotation about an upwardly and downwardly extending axis, a roll seat on the turntable at one side of the axis of rotation, the roll seat including a roll side support facing away from the axis of rotation and a lower roll and support extending beyond the roll side support and away from the axis of rotation, an air ejecting duct on the turntable, the air ejecting duct having a discharge opening in the roll seat side support and and an intake opening located to sweep over portions of the base, an air supply duct in the base having an outlet opening located for registering with the air ejecting duct intake opening and the base air supply duct having an inlet opening, a gauging nozzle on the base, the gauging nozzle having a chamber and a chamber discharge opening directed radially towards the axis of rotation and across the path of the lower roll end support of the roll seat and towards the path of the roll sidesupport of the roll seat, means for supplying compressed air to the gauging nozzle chamber, and differential pressure operated valve means including a valve, differential pressure operated valve opening and closing means operatively connected with the gauging nozzle chamber and with the valve, a valve inlet and a valve outlet for the valve, a duct connecting the valve outlet with the base air supply duct inlet opening, and means for supplying compressed air to the valve inlet.

6. In a roll gauging machine and the like, a base, a turntable operatively mounted on the base for rotation about an upwardly and downwardly extending axis, the turntable having a peripheral side face and an annular rib below the peripheral side face, an air ejecting duct on the turntable, the air ejecting duct having a discharge opening in the peripheral side face and an intake opening located to sweep over portions of the base, an air supply duct in the base having an outlet opening located for registering with the air ejecting duct intake opening and the base air supply duct having an inlet opening, a gauging nozzle on the base, the gauging nozzle having a chamber and a chamber discharge opening directed across the path of the rib and towards the path 01 the peripheral side face, means for supplying compressed air to the gauging nozzle chamber, and difierential pressure operated valve means including a valve, differential pressure operated valve opening and closing means operatively connected with the gauging nozzle chamber and with the valve, a valve inlet and a valve outlet for the valve, a duct connecting the valve outlet with the base air supply duct inlet opening, and means for supplying compressed air to the valve inlet.

the peripheral side face, an air electing duct on the turntable, the air. ejecting duct having a discharge opening in the peripheral side face and an intake opening located to sweep over portions of the base, an air supply duct in the base having an outlet opening located for registering with the air ejecting duct intake opening and the base air supply duct having an inlet opening, a gauging nozzle on the base, the gauging nozzle having a chamber and a chamber discharge opening directed across the path of the rib and towards the path of the peripheral side face, means for supplying compressed air to the gauging nozzle chamber, and differential pressure operated valve means including a valve, differential pressure operated valve opening and closing means operatively connected with the gauging nozzle chamber and with the valve, a valve inlet and a valve outlet for the valve, a duct connecting the valve outlet with the base air supply duct inlet opening, and means for supplying compressed air to the valve inlet.

8. In a roll gauging machine and the like, a base, a turntable operatively mounted on the base for rotation about an upwardly and downwardly extending axis,. the turntable having a conical side face and an annular rib below the conical side face, an air ejecting duct on the turntable, the air ejecting duct having a discharge opening in the conical side face and an intake opening located to sweep over portions of the base, an air supply duct in the base having an outlet opening located for registering with the air ejecting duct intake opening and the base air supply duct having an inlet opening, a gauging nozzle on the base, the gauging nozzle having a chamber and a, chamber discharge opening directed across the path of the rib and towards the path oi the conical side face, means for supplying compressed air to the gauging nozzle chamber, and differential pressure operated valve means including a valve differential pressure operated valve opening a and closing means operatively connected with the gauging nozzle chamber and with the valve, a valve inlet and a valve outlet for the valve, a duct connecting the valve outlet with the base air supply duct inlet opening, and means for supplying compressed air to the valve inlet.

9. In a roll gaugingmachine and the like, a

. base, a turntable operatively mounted on the base for rotation about an upwardly and downwardly extending axis, a plurality of roll seats on the turntable, each roll seat being at one side of the axis of rotation and including a lower side support and a lower roll end support, a plurality of air ejecting ducts on the turntable, each air ejecting duct having a discharge opening on one of the roll seat side supports and an intake opening located to sweep over portions of the base, a plurality of air supply ducts in the base, each air supply duct having an outlet opening located for registering with the air ejecting duct intake opening and each base air supply duct having an inlet opening, a plurality of gauging nozzles on the base, each gauging nozzle having a chamber and a chamber discharge opening directed across the paths of the lower roll end supports of the roll seats and towards the paths of the rel; side supports of the roll seats, means for supplying compressed air to each gauging nozzle chamber, and difierential pressure operated valve means ioi' each gauging nozzle, each differential pressure operated valve means including a valve, differential pressure operated valve opening and closing means operatively connected with the assoc te gauging nozzle chamber and with the valve, a

valve inlet and a valve outlet for the valve, a

duct connecting the valve outlet with the base air supply duct inlet opening, and means for supplying compressed air to the valve inlet.

10. In a roll gauging machine and the like, a base, a turntable operatively mounted on the base for rotation about an upwardly and downwardly extending axis, a plurality of roll seats on the turntable, each roll seat being at one side of the axis of rotation and including a lower side support and a lower roll end support, a plurality of air ejecting ducts on the turntable, each air ejecting duct having a discharge opening on one of the roll seat side supports and an intake opening located to sweep over portions of the base, a pluralityof air supply ducts in the base, each air supply duct having an outlet opening located for registering with the air ejecting duct intake opening and each base air supply duct having an inlet opening, a plurality of gauging nozzles on the base, each gauging nozzle having a chamber and a chamber discharge opening directed across the paths of the lower r011 end supports of the roll seats and towards the paths of the roll side supports of the roll seats, means for supplying compressed air to each gauging nozzle chamber, and diiferential pressure operated valve means for each gauging nozzle, each differential pressure operated valve means including a valve, differential pressure operated valve opening and closing means operatively connected with the associated gauging nozzle chamber and with the valve, a valve inlet and a valve outlet for the valve, a duct connecting the valve outlet with the base air supply duct inlet opening, means for supplying compressed air to the valve inlet, and means adjustably mounting each gauging nozzle for varying the location of its chamber discharge opening with respect to the turntable and the roll seats thereon.

11. In a roll gauging machine and the like, a plurality oi. laterally connected roll seats, each roll seat including a roll side support and a lower 45 roll end support, means for transporting the roll seats successively past a gauging station, a gauging nozzle at the gauging station, the gauging nozzle including a chamber and a chamber discharge opening directed across the paths of the 50 roll seat end supports and towards the paths oi' the roll seat side supports, means for supplying fluid under pressure into the gauging nozzle chamber so that a fluid jet is discharged from the nozzle chamber discharge opening, differen- 65 tial pressure operated means communicatlngly connected with the gauging nozzle chamber, and means for electing a roll from each roll seat, the roll ejecting means being actuated by the differential pressure operated means.

12. In a roll gauging machine and the like, a plurality of laterally connected roll seats, each roll seat including a roll side support and a lower roll end support, means for transporting the roll seats successively past a gauging station, a gaug- 65 ing nozzle at the gauging station, the gauging nozzle including a chamber and a chamber discharge opening directed across the paths of the roll seat end supports and towards the paths of the roll seat side supports, means for supplying 7 fluid under pressure into the gauging nozzle chamber so that a fluid jet is discharged from the nozzle chamber discharge opening, difl'erential pressure operated visual gauge means communicatingly connected withthe gauging nozzle 76 chamber, and differential pressure actuated roll 13. In a roll gauging machine and the like, a 5

plurality of laterally connected roll seats, each roll seat including a roll side support and a lower roll end support, means for transporting the roll seats successively past a gauging station, a gauzing nozzle at the gauging station, the gauging 10 nozzle including a chamber and a chamber discharge opening directed across the paths of the roll seat end supports and towards the paths of the roll seat side supports, means for supplying fluid under pressure into the gauging nozzle 16 Number chamber so that'a fluid jet is discharged from the nozzle chamber discharge opening, differential pressure operated means communicatingly con.-

12 nected with the gauging nozzle chamber, means for ejecting a'roll from each roll seat.'the roll ejectingmeans being actuated by diflerential pressure operated means, and means adjustably mounting each gauging nozzle for varyin the location of its chamber discharge opening with respect to the paths of the roll seats.

BLAISE L. DIAMOND.

REFERENCES CITED The following references are of, record in the file of this patent:

UNITED STATES PATENTS Name Date 2,354,419 Lingerfelt July 25, 1944 1,882,374 Strickland Oct. 11, 1932 2,397,494 Kuppersmith Apr. 2, 1946