US1314184A

US1314184A - Device for laying oitt pipe-flanges

Info

Publication number: US1314184A
Authority: US
Publication date: 1919-08-26
Anticipated expiration: 1936-08-26

Description

M. E. CLARK.

DEVICE FOR LAYING OUT PIPE FLANGES.

APPLICATION FILED MAI/21. Isla.

'1,3 1 4, 1 84. Patented Aun'. 26, 1919;*f

ATTORNEY 'run cnmmnm PLANUGRM'II co.. wAslllNnTuN. n. c.

M. E. CLARK. DEVICE FOR LAYING OUT PIPE FLANGES.

APPucATloN FILED MAYzl, usla.

1,314,184. x Patented Aug. 26,1919.

2 SHEETS-SHEET 2.

2l ,/5 20,7 sa

INVENTOR ATTORNEY Tun COLUMBIA PL/Nounwn co.. WASHINGTON. D. c.

MASON" EDWIN CLARK, OF SEATTLE, WASHINGTON.

DEVICE FOR LAYING OUT PIPE-ELAN GES.

Specification of Letters Patent.

Application led May 27, 1918. Serial No. 236,749.

To all whom 'it may concern Be it known that I, MASON EDWIN CLARK, a citizen of the United States, and resident of Seattle, in the county of King and State of Washington, have invented certain new and useful Improvements in Devices for Laying Out Pipe-Flanges, ot which the ,tollowing is a clear and exact specification.

rlhis invention relates to improvements in tools or instruments for locating and marking the centers of holes that are to be drilled in pipe flanges and the object of this i1nprovement is to provide a strong and relatively simple and easily operated device ot this nature with which the holes in pipe flanges may be marked out with great rapidity.

A further and more specific object is to provide a device of this nature that is constructed so that it will operate with great accuracy and at the same time is strong enough so that one ot its parts may be struck a relatively hard blow to cause it to make a mark like a punch mark to indicate the center of the hole that is to be drilled.

A still further object is to provide a dcvice of this nature that embodies novel, efficient and easily operated means for centering the device vwithin the central opening in a pipe flange.

The invention consists in the novel construction, adaptation and combination of parts, as will be more clearly hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a plan view of a device constructed in accordance with this invention; Fig. 2 is a viewv in vertical section substantially fon broken yline 2-2 of' Fig. 1, certain parts being broken away and certain other parts being shown in elevation; Fig. 3 is a view in cross section on broken line 3-#3 of Fig. 2 showing the parts as they would appear if the plug that projects downwardly into the top end of the hollow shank was removed; Fig. 1 is a view in cross Section on broken line 1--11 of Fig. 2; Fig. 5 is a view in cross section on broken line 5-5 of Fig. 2; Fig. 6 is a detached view in perspective of one of the centering devices as it may appear when extended to fit a pipe flange having a large central openingand Fig. 7 is a view in longitudinal .section of a marking tool that is adapted to be used in connection with this device,

In locating marking the centers ,0f

holes that are to be drilled in pipe flanges when the pitch diameter and number of holes required are known it is common practice to plug the cent-ral opening of the flange with a piece of' wood or similar material, find the center of' this plug with a .pair of dividers, then describe a circle of the given diameter and then by a cut and try method to space ofi' the required number of holes. After the centers of the holes are located they are usually marked by an indentation with a prick punch, a small circle is then described to indicate the circumference of the desired hole and five or six prick punch marks are made at spaced intervals around the small circle to guide the driller.

The above method when accurately carried out requires the expenditure of considerable time on each flange.

The device disclosed in this application enables a person to perform the work of laying out the holes on a pipe flange at a great saving of time as compared to the old method and lis accurate and reliable in operation.

Like reference numerals designate like parts throughout the several views of the accompanying drawings.

Referring to the drawingsthe numeral 10 designates a tubular shank that is provided near its top end with an annular flange 11 and above the flange with an external thread 12 that is adapted to screw upwardly through a plate 13 and through the bottom of a concentrically arranged shallow dishshaped member 14, the flange 11 engaging with the bottom of the plate 13 and serving as a stop.

The member 14C is provided with relatively shallow vertioally'arranged cylindrical side walls 15 in the top edge of which are provided a plurality of notches 16 that are marked or graduated as shown in Fig. l to indicate the number of holes that are to be drilled in the flange.

Fixedly secured within the top end of the shank 10 is a plug 17 having a concentric bore to permit the passage of a stem 18 and provided on its top end with a concentrieally arranged upwardly directed bearing shank or sleeve 20 that is externally threaded at its top end for the reception of a nut 21.

22 is a collar that is journaled on the shank 20 and is connected by a pivot 23 with members A24: that are iixedly secured by Patented A110. 26, 1919. I

screws or rivets 25 to the inner end of a graduated measuring arm 26, the arrangement being such that the outerend of the measuring arm' may be lifted up and the arm rotated or turned about the central axis of the device.

,Y The arm-26 is substantially T-shape in cross section the horizontal portionhaving the graduations inscribed thereon and the vertical portion being adapted to fit snugly within the notches 16.

Slidable on the arm 26 is a marking device 27 that is provided on its bottom end'with a removable centrally arranged punch member 28 and on its top end 4with a knob 30 that serves as a linger hold and that may be struck with a heavy instrument, as a mallet,

' to cause thepunch member 28 to make an indentation.

The marking device 27 is` adjustably se- Y cured tothe measuring arm 26 by a thumb screw 31 as more'clearly shown in Fig. 5 and such marking device is provided with a curved edge 29 thatjis adapted to be set on the curved graduation on the arm26 that marks the desired diameter. The edge 29 may be notched `as at.29 to facilitate setting it exactly on the desired graduation.

'The plate 13 is secured to the member 14 by screws 32 and is provided at intervals with outwardly projecting arms 33 that are Hush vwith the bottom of the plate 13 Vand serve to' support the device in the correct position onl a pipe liange 34 while itis being centered. f v Y Y Y 'The centering devices comprise three

arcuate members

35, 36, and 37 that are adapted to move kinto and out ofi the shank 10' through guide slots V38. j Y Y The lower ends ofthe

members

35, 36 and 37 areconnected by pivots 40 with a disk 4l that is adapted to be moved'vertically in the shank 10 by the threaded bottom end 42 of the stem '18 which extends therethrough.

` The top surface of the disk 41 is recessed as at 43 to facilitate the securing of the lower ends of the arcuate arms thereto and the shank V10 may be perforated as at 44, see Fig. 4, `to permit the insertion of the pivot screws 40 when the device is assembled.`

YThe bottom end of the plug 17 is slottedv atV three Ypoints around itsl peripheral edge as vindicated at 45 to form guides lfor the out-Y wardly projecting ends of the centering members 35', 36 and '37.

The centering members V35, 36and 37 are .l disposed and arranged as shown invFigs. 2',

f 3 and '4 so that theymay'bewithdrawn entirelyv within the shank 10' andwhen in such position will not interfere with each other or with" the screw 42.Y

The centering members are all of` the same length and when the disk,v 41 Yis raised by rotating the p screw 42 such members will at all'tim'es be projected an even distance indentation or flange having `a central opening that is too large to be reached by the

members

35, 36 and 37 without the use vof the extensions.

The stem 18 .is provided at points below v the plug 17 and above the nut 21 with

fixed collars

48 and 49 respectively that serve to prevent vertical movement thereof and is further provided on its top end with a fixedly mounted hand wheel 50 by which it may be turned. Y

vWhen a pipe ange 34 is to be marked 'out the shank 10 is inserted in the central openl ing 34 of the flange and' the plate 13 and arms 33 are permitted to rest on the top of the flange.

The screw 42 is then rotated byy turning the hand wheel 50 toexpand the centering

members.V

35,36 and 37 Y against the inner annularwall of the central opening of the flange thereby securing the instrument in a central location with respect to Vthe pipe flange.

Y The marking device27 is then set sothat the edge 29 registers exactly with the graduation indicating the desired pitch diameter ofthe holes that are tobeplaced lin `the notch 16 as shown in Fig. 1 which constitutes an Y' initialor starting point.` The Amarking de-V vice is then struck a blow suiicently hard to cause 'the punch member l28 to .makeY ianV Y punch mark on .the pipe flange at the point where the hole is to be.

The arm 26 is then lifted andsuccessively positioned in they notches 16 indicating theV other points that areto be marked and the striking operationV repeated: vFor instance' if six holes are to be marked' out on a pitch circle five inches vin diameterl the marking device 27 is set onthe five inch graduation mark, as shown in Fig. 1, and the arm 26 is first placed inthe initial or starting notch 16 and struck'wi'th a mallet and thenV is successively placedin the notches indicated by thesmall numerals"6 on the top of the' Y Y flange and struck with a mallet to mark the-l centers indicated at the'points V51 infFig. 1.

It will be seen from' an inspection Vof Fig. 2 that when the arm 26 i'sjin'V a notch 16 and` the point Yof the punchmember 28 is5 resting on the flange there is a clearance between the. bottom of the notch and the bottom of the vertical flange of the arm 26 so that when the member" 27 Y is struck with a` mallet the iso 'Y force of the blowwillnot ytend vto bend the .arm 26.

`It is obvious ythat thisdevice may be made in various, lsizes andi that` any number of notches ldmay-beprovided but it has been `inclusive on any pitch 'diameter from four to fourteen inches is sufficient t0 satisfy all ordinaryV requirements.

'In'Fig 7 Ighave shown a tool forquiekly andeasily-making a number of indentations or punch marks 52 on the circumferential line 53 of a hole that is to bel bored as indicated in Fig. 1.

This devicel comprises-a body member 54 having an enlarged bottom end 55 that is provided with aplurality of idiametrically arranged punchl points 56 and having a rounded top end that may be struck with a mallet.

The body-portion 54 is provided with an axial bore 57.1exten`ding from the enlarged bottom end inwardly and adapted f for the reception of a centering pin58 that bears against a compression spring 60 and `is provided with a slot 61 on one side for the rcception of a screw 62 that limits the outward movement of the centering pin.

The marks 52 are made byplacingthe point of the pin 58 in `one .of ythe punch marks 51 pressing downwardly until the points 56 rest `on the surface of the flange 34 and then striking a blow on the rounded top end of the member 54.

It will be understood that changes in the form of construction and arrangement of the various parts of this device may be made within the scope of the following claims.

What I claim and desire to protect by Letters Patent is- 1. A device of the class described comprising a shank, means associated with said shank for centering it within a cylindrical opening, a graduated arm pivoted for tilting movement and for movement around the axis of said shank, an annular notched fiange supported by said shank for determining the angular position of said arm and a marking device carried by said arm.

2. A device of the class described comprising a shank, means for centering said shank within a cylindrical opening, a disk concentrically secured to the top end of said shank, said disk having upwardly project* ing cylindrical sidewalls, there being a plurality of notches in the top edge of said side walls, a graduated measuring arm rotatable about the central axis of said shank, and adapted to be positioned within said notches, and a marking device movable lengthwise on said measuring arm.

3. A device for laying out holes on a pipe flange comprising a shank, means for centering said shank within a cylindrical opening in said pipe fiange, a plate secured on the top end of said shank, outwardly projecting arms fixedly connected with said plate and flush withthe bottom surface thereof, said arms and said plate being adapted to rest upon the top surface of a pipe flange, a cylindrical receptacle secured to said shank above said plate, said cylindrical receptacle having vertical sidewalls that are provided in their top edge with notches arranged in graduated relation with respect to each other, a measuring arm pivotally mounted for vertical movement at its inner end and rotatable about the axis of said shank in a plane at right angles thereto, said measuring arm being adapted to be selectively positioned ywithin said notches, and a marking device movable lengthwise of said measuring arm.

4. A device for laying out holesona pipe flange comprising a shank, means for centering said shank within the central opening of said pipe flange, supporting means secured to the top end of said shank yand adapted t0 rest upon the top of said .pipe flange, a measuring arm pivoted at its inner -end for tilting movement in the plane of the axis of said shank and rotatable about the axis of said shank in a plane at right angles thereto, means for determining the angular positionof said measuring arm, and a marking device movable lengthwise on said measuring arm. i

5. A device for laying out holes on a pipe flange comprising a shank, means for centering said shank within the central opening of a pipe flange, a measuring arm tiltably secured at its inner end to said shank and rotatable about the axis of said shank in a plane at right angles thereto, a marking device movable lengthwise of said measuring arm, and supporting means secured to the top end of said shank and adapted to rest on the top of a pipe flange, said supporting means having notches therein for the reception of said measuring arm whereby said measuring arm may be moved through a predetermined angle about said shank.

6. A device for laying out holes on a pipe fiange comprising a shank, means for centering said shank within the central opening of a pipe flange, a measuring arm tiltably secured at its inner end to said shank and rotatable about the axis of said shank in a plane at right angles thereto, a marking device movable lengthwise of said measuring arm, and supporting means rigidly connected with the top end of saidshank for engaging with the top side of a pipe flange, the top side of said supporting means being graduated with a plurality of notches in which said measuring arm may be selectively placed to space off a desired number of equidistant points on a given diameter.

7. A device of the class described comprising a. tubular shank having a plurality of guide slots therein, a graduated measuring arm mounted for rotation about the axis of said shank at the top end thereof, a plurality of arcuate centering members movable into and out of said shank through said guide slots to center said shank within a cylindrical opening and means for moving said centering members.

8. A device of the class described comprising a tubular shank having a plurality of guide slots therein, a graduated measuring arm tiltably secured tothe top end of said shank and rotatable about the axis of said shank in a plane at right angles thereto, a disk movable within said shank, a threaded stem disposed axially of said shank andeX- tending through said disk for moving the disk vertically within the shank, and three arcuate centering members all pivoted at their bottom ends to said disk and movable into and out of said shank through said guide slots to center said shank within a cylindrical opening.

9. A device for marking out pipe flanges comprising a tubular shank having a plurality of slots therein, a fixed plug disposed within the top ends of said shank and having a concentric sleeve that projects above the top of said shank, said plug also having a concentrically arranged bore, a stem disposed within said bore, said stem having a threaded lower end, a hand wheel iXedly secured on the top end of said stem, a disk threaded on said stem and movable vertically within said tubular shank in response to rotation of said stem, a plurality of arcuate centering members pivotally secured at their bottom ends to said disk and projecting upwardly and outwardly through said slots in said shank whereby when said disk is raised within said shank said centering members will' be expanded against the inner walls of the central opening of pipe flange and secure said shank in concentric relation within said central opening, a plate secured to the topk end of said shank and `provided with outwardly projecting arms that are flush with the bottoml surface thereof, a cylindrical receptacle secured to said plate in concentric relation to said shank, saidcylindrical receptacle having a plurality of notches in its top edge that are graduated with respect to each other, a collar rotatably mounted on the upwardly projecting sleeve of said plug, a graduated measuring arm pivotally secured to said Collar whereby it may be tilted `into and outv of said notchesand rotated about said sleeve, said measuring arm being adapted to fit within said notches whereby its angular position may be determined, and a marking device movable lengthwise of said measuring arm.

Signed at Seattle, Washington, this'lQth day of April, 1918.

MASON EnwrN CLARK.

Gopies of this patent may be obtained for ve cents each, by addressing the Commissioner ofn Patents.

Washington, D. C.