US1290789A - Positioning device. - Google Patents

Description

E. J. SCHENDEL.

POSITIONING DEVICE. APPLICATION FILED FEB. 21. :ou's.

Patented Jan. 7, 1919.

4 SHEETS-SHEET I.

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ATTORNEY 1 E. I; SCHENDEL.

POSITIONING DEVICE. APPLICATION FILED FEB. 21; ms:

Patented Jan. 7, 1919.

4 SHEETS-SHEET 2 INVILNIUR.

A TTORNEY WITNESS E. l. SCHENDEL.

POSITIONING DEVICE.

APPLICATION FILED FEB- ZI. 1918.

1,290,789. I Patented Jan. 7,1919.

' 4 SHEETS-SHEET 3- INVENTOR.

ATTORNEY @Wi? M L E. l. SCHENDEL.

POSITIONING DEVICE.

- -APPLICATION FILED FEB. 21. 19!- 1,290,789.

Paiaented Jan. 7, 1919. I

4 SHEETS-SHEET 4- IN VEN TOR.

WITNESS V v a ATTORNEY ERNEST ms'on'nnnnt, or! ronns'r" PARK, rttmors.

' "ros'rrronrne nnvron.

To all whom it may concern:

Be it known that I, ERNEST'J. sonnnnnn, a citizen of the UnitedStates, residing at 'Forest' Park, in the county of 'Cook and State of Illinois, have invented certain new and useful Improvements Positioning Devices, of which the followingis a specifiv cation. 1 v

invention pertains to appliances for veryaccurately positioning tools with reference to the work, or partto be operatedupon by the tool, whereby the action of suchtools and the results of their operations may be predetermined with great precislon.

Oneof the leading objects of is the provision of an apparatus-of this kind which is simple in structure, relatively economical to produce, and which may be em ployed. with a considerable saving of time but without. sacrificing accuracy of results accomplished.

Assuming thatit is desired to: bore a hole in .a metal-plate, such as a.-]'ig'or.templet,

and that the position of the hole. must be] secured w1th exactness, the workman,'by means of a somber ormarker and a microme--- ter, yernier, or s ize-blocks,, lays out the intersectmg center-lines of thehole' on the plate by the usual precise methods known to skilled mechanics. Then -a small hole is. drilled in the plate approximately concentric with the crossing of such lines and the 1 hole is tapped. Thereupon, a cylindrical button of ordinary style and of exactly known dimensions, is adjusted and its posit10n accurately determined by the customary preclslon lnstruments, such as amicrorneter,

so that its axis is in exact register with that of the hole to be bored, in which position the button is firmly held against dlsplacement by a screw engaging the tapped hole in the usual way. Such button having been thus positioned with extreme accuracy inexact coincidence with the hole to be bored, it is now necessary to so adjust the locationo the holding or positioning device for the I boring-tool that it shall be in faultless and complete register with the button. It is in the construction of such a locating device that my invention resides. Its quill or hollow-sleeve for holding the-tool, by the improved means providedis, by a few manipulations, brought into exact or perfect registel; or alinement with the button. Then this positioning device is swung or rocked back Specification oi Letters Patent.

quill or hollow-sleeve :much' as the. p l I held in place',-;;the?b the invention. v

' the button formerly 'occ of the center lines.

' with the drilled Patented J an. 7, 1919.

Application filed rebruar 21, 191s. Serial No. a1s",4s1.

out of the way to permit the removal of the button from the plate and the drilling of a hole 'of slightlysmaller diameter than the final hole required in approximate register ,only with the center-lines, the

reviously tapped hole acting as a guide fort e drill.

After such drilling operation is consummated the positioning appliance and its is again swung back into place, the boring-tool inserted therein, and coupled with. the driving-means. Inas- 'tioning device is rigidly reet eg1s ter ther'with, which, of course, is in precise regist'er" with the position which 7 dpied. The hole is, therefore, bored "in the absolute position reightly eccentric tothe approximately-pos1- .tioned drilled hole, depending upon how far 'orin'g must occur in cor qluired, which nevertheless may be very s the center of the tapped hole was from the I realposition required. It need be only approximately in register with the intersection In order that those skilled in this art may have a full and complete understanding of 'theimproved and novel appliance constituting the subject-matter of this invention and may understand its various structural and functional advantages, I have illustrated in in the apoompanying drawings a' desirable embodiment of the invention and throughout the varidus views of such drawings like reference characters refer to the same parts.

.Inthe ilrawings: v

Figure 1 is an elevation of the a paratus; Fig. 2 is a substantially-centra vertical section through the appliance showing the same equipped with the test device; Fig. 3 is a plan view of the structure shown in Fig. 2 with the test-indicator r emoved, its supporting rod being shown. 1n section;

Fig. 4 is a horizontal section on line f of Fig.2;

Fig. 5 is a view similar to Fig. 2 showing the boring-bar in'position and illustratm the plate operated upon already equippe hole preliminary to the boring operation; and I Fig. 6 is a face view of the dial of the test indicator. I

Referring to these drawings, it IS to be assumed that the metal-plate .20 is the one through which a hole of definite size isto be bored, the accurate location of the hole be- 1 ing determined by the new appliance about; to-be described in detail as to structure and hinged to the posts and a circular or bed portion 30 adapted. to support the major part of the accurate adjusting means to be described. This hinged bracket is adaptedto be swung back out of the way or be turned? up into operative position with the circular bed portion 30 parallel to plate 20. In

. order to maintain the bracket in such latter position rigidly and without possibility of displacement, the portions 29 thereof have a cross-bar 31 fastened thereto by screws 32, its projecting ends being-adapted to bear against the surfaces 26'and 27 and be held firmly 'thereagainst by a pair of clamps 33 and 34 hinged to the posts at 35 and 36, such hlnge mounting of the clamps permitting them to be released and swung out of the way to allow thebracket to be turned back.

The flat circular bed 30 of the bracket has 'arelatively-large opening 37 therethrough for the accommodation of a depending, hollow, cylindrical portion 38, of smaller diameter thanthe hole 37, of a member comprising-in addition to the part 38 a circular flatplate or outstanding flange' 39 and an upwardly-extending barrel 40. This inter mediate plate section 39 has aplane under surface resting on and supported by the corresponding plane upper face of bed 30, and the construction is such that the supported member may move or slide in any direction on its supporting bed.

In order to clamp it fixed on such bedin any adjusted position, the latter is equipped inverted T -shaped gro0ve41 adapted to re- (361Ve the heads or enlarged ortions of three bolts 42, each of which pro ects up through lts radial slot 43 in the plate-portion 39, and

a hole in a washer 44, abovewhieh its threaded shank is fitted with a clamp-nut '45 provided with a manipulating handle 46. o the end of permitting the introduction of such; bolts into their round or circular groove, the plate portion or flat-flange 39 has an entrance cavity 47 (Fig. 2) through which the bolts may be inserted, and then the part 30 shifted to destroy the register of the bolt and recess. If desired, although it comprising a part 29 directly pivoted or in its top face with a circular undercut or,

cesses 'in the top face of the part 39.

The composite member 38, 39, 40, is designed to revolubly accommodate a hollow,

cylindrical sleeve or quill 48 and provide bearings therefor, whereby such sleeve or quill may be turned when required. Ac- P cordingly, the part 38 has such a bearing 49, and in order that itsdiameter may be adjusted to accurately fit thesleeve or quill at all times, the member 38 is transversely slit at 50 and longitudinally split or divided at 51, suitable'constricting means 52 being provided for adjusting the diameter of'the bearing. A like bearlng 53' for the upper portion of the sleeve or quill is supplied in a cap-member 54 screwed into the top end of barrel 40. I

At about its middle, the sleeve or quill 48.

is externally equipped with a collar 55 tight thereon and surrounding this is a sleeve 56 provided internally at its upper end with a spanner nut 57 held against unscrewing by a transverse set-screw 58, the nut holding the sleeve in fixed relation to the collar by bearing on its upper end. The lower end of sleeve 56 is pinned at 59 to a ring 60 hearing against the bottom face of thev collar.. Obviously, in this way, the sleeve 56 and the quill 48 are held against relative longitudinal displacement but rotatable relatively to one another. As illustrated in Fig. 2, a

split, expansion friction-ring 61 is mounted. a

by one or more} screws 62 on and below r ng .60, exerting an outward pressure against the inner cylindrical surface of the member 38, 39, 40,thus permitting ready rotation of the quill by hand without dan r of even slight longitudinal displacement, ea cause this friction ring prevents the stationary sleeve 56 from shifting lengthwise which might otherwise be possible to the small extent permitted by the back lash between'the pinion 64 and rack 63.

One side of sleeve 56 has rack teeth 63 in-mesh with a gear 64 on a short shaft 65 in a lateral housing 66, the gear beingrotated by a worm 67 revoluble by a handle 68 mounted on its shaft. By turning such handle the quill may be fed up or down as desired. q

4 The quill is adapted to removably accommodate either a test device or a boring appliance or othertool. equipped with the test appliance comprising a tube 70 havingv an enlarged knurled head 71 with a tapered or beveled portion 72 fit-, ting in a similarly flared end 73 of the quill.

nut 75 of substantially the same. construc-.

tion as the portions 71, 72 of the tube, being 180 In Fig. 2 it is shown i 'To prevent the tube from turning in the to an arrow lmurled and beveled and fitting in a cone-'- spondingly-shaped end of the tube. 'By

these means the tube is firmly held demountably in the quill, 'being rotatable therewith.

On its top surface head 71 has fixed there- 131 in the same vertical plane as "the j. lever 77 and with its head in the direction of such lever and [its knob 78.

At 7 6 in the side-wall of the tube a small lever 77 with a small knob end '78 is fulcrumed intermediate its ends, theknob being located below the end of the-tube and adapted to cooperate with a cylindrical button 79 secured to plate by a screw 80 engag1ng a tapped hole 81 in the plate, the screw having the usual washer 82 between its head and theflat to upper end of t is lever 77 engages one arm 'of a bell-crank 83 fulcrumed at 84 in 'the tube,-the other bell-crank arm being incon tact withthe lower end of a rod 85,-,cen-

trally-located and vertically-slidable in the tube and guided in such movements by; a

bearing in a'partition-wall 86 at the lower portion of the tube and a similar bearing in a plug 87 screwed into its upper end. The

-- top end of the rod is intended'to co-act with detachably mounted on cap 54.by a rod 89- ad ustable in a clam 90 and carrying at its indicator.

a test-indicator 88 of the usual .construction having a needle cooperating with a circular scale, each graduation of which represents a one-thousandth part of an inch movement of the knob or finger 78. Such indicator is top end a horizonta rod' 91 supporting the In place of such testing appliance the quill may accommodate a boring or. grinding device or similar tool. A boring appliance of this kind has been shown in place in the quill in Fig.5. Its tubeIOO is held in place in the quill in much the sameway that the tube 70 is retained therein, the tube at its lower end carryin an adjustable boring-tool 1010f any suitab e construction. The tube internally receives a shaft 102 fitted with a keyway 103 receiving a key 104 on the inside of the tube, such shaft at its upper end being operatively connected to a jointed shaft or one having one or more universal joints permitting the quill to be rotated by means not in exact register therewith. j

flange or plate '39 and having a threaded surface of the-button. The

the latter being closed by a g hold it fixedly iniplace. I

are released the lungers'under the action of it being flat end 118 adapted to bear againstsection 119, (Fig. 2) engaging the threads of the housing, this screw-threaded'rod having.

a shell portion -120-fitting over the round housingw112' and also having a handle 121 secured thereto by a screw 122. It w1ll be apparent that when the plate or flange 39- and its associated parts are free to move on the bed or support 30, the turning of handle 122 to. feed the screw inwardly can be em- 7 ployed to shift or modify the position of the quill and its movable mounting.

On points axis of rod 117 there'are two split-bearings 123 and 124: each housing a cylindrical pin, rod,'or plunger 125 having a flat orplane end bearing against the periphery of the cylindrical flange or plate 39 and contained in the bearing, the outer end of in osition by screws l28.

ring 110 at diametrically-opposite and at exactly i'ight-fangles to theyieldingly pressed toward such flangeby a spring 126 v H cover 127 held Each of such,

div ded or .s lit bearings has a screw, 129.

rovided wit a handle 130 by which the earingm'y. be tightened on the plunger. to

their springsza ways maintain vtangential contact with the curved edge of the circular flange or plate.

The operation of the tically as follows:

W hen such screws appliance is prac I The workman marks out on the top' sur p face of plate 20- the center-lines of .the hole to be bored. Then he drills a small hole 81 practically, but not'necessarily exactly, concentric with the intersection of such lines, whereupon he. taps such hole, or at least its upper part. He now applies the u button 79 to the plate and inserts screw 80 in the, tapped hole through the button and its washer, positioning the button very accurately and testing it by a micrometer, for.

p so that heiis certainthat itis in exact coincidence with the hole to be bored Such absolute locating of the button is a matter of no great difficulty when supple- 1 mented or. tested withprecisi'on instruments, understood, as is shown-in Fig. 2, that thehole through the button is larger than the diameter of the screw, thus permitting sidewise adjustment of the button even though the screw is not capable of, such movement. a

Now the positioning appliance constitut mg the basis of this application is placed 1 plate and its quill located in practical but not indis ensably in exact register with' the button, t is being easily accomplished-- by looking down through the empty quill whose relation to the button can be quite ac curately determined by the eye only. Thereupon thispositioning device is fastened in placeby'tightening screw 23. Obvious1y,-it "now remains necessary'to' 88 shows the quill and button to be out of adjust the quill and its associated parts 'into perfect and absolute register with the correctly positioned button. This is brought about in the following manner, assuming that the test-indicator operating apparatus has-been inserted in the quill and the testindicator itself mounted on the appliance as shown in Figs. 1 and 2, the knob 78 bearing against the cylindrical surface of the button,

as will be readily understood. The quill and its contained testing appliance is slowly turned by hand by means of the knurled part 71. Let us assume that the indicator register 30/1000 of an inch, as shown by the indicator. The quill is turned so that its arrow 131 points in the. direction of the high point that is, the direction in which the quill should be moved to effect such register, this being determined by the reading of the indicator-scale as the .quill isturned. Handle 113 is now turned loosening screw 112 and freeing ring 110 so that it may be rotated on the bed on which it is mounted and by such turning of the parts the, housing 116 and its rod 117' are brought into the vertical plane of the arrow and into alinement with the tail of such arrow, which has remained stationary during such adjustment of the parts, under which circumstances the two pins or plungers 125 are at v ment is brought about by turning handle 121 which screws the rod 117 inwardly, the

I ment of the parts.

tained elements are free to move between the now fixed guides 125, 125, and this movelatter pushing the movable parts in the same direction. This movement of the quill and its mounting is registered or displayed on the indic'ator 88 and the handle 121 is turned until] the quill has been moved approximately onehalf the amount that itwas out of register, namely 15/1000 of an inch.- During such adjustment of the quill and its mountingthe latter, although free to move as indicated is held more or less frictionally by the action of the small springs 14; beneath thewashers 44.

While this adjustment has tended, to bring the quill into exact register with the button :it has probably not accomplishedv it exactly .and another test is made by turning the quill. v is possibly 8/1000 of an inch out of position It may now be found'that the quill in a direction different from that which it was before. The handles 130. areloosened,

the handle 113 loosened, and the ring 110 turned so as to bring the plunger 117 into dle 113 is tightened, the handles 130 tight ened, and the'handle 121 again turned so as to push the quill and its associated parts in the direction of the arrow one-half the amount which it was out of register.

This operation is repeated as many times as is required to bring the quill into precise and exact register with the button and under ordinary circumstances this-can be accomplished in three or four trials. When in precise register the turning of the quill will give no reading on the indicator 88. During all of such testing operations the quill, while free to-turn, is effectively held against longitudinal movement by the action of the frica tion ring. If such lengthwisev movement were permitted, the reading of the test indicator would be unreliable.

' Assuming that the quill has beenithus properly positioned, and the handles 46 tightened, the clamps '33 are released and swung out-of the way, and the whole positioning device turned back on the hinge 28, the indicatin mechanism being removed from the qui Thereupon the button 79 and its'screw and washer are removed from the plate and a hole 132 (Fig. 5) of less diameter than the required hole, drilled through the plate, the tapped'hole 81 acting to start the drill in proper position. The drilled hole will, of course, be concentric to the hole '81, but not necessarily in exact register with the position which the button occupied. This eccentricity, however,'slight vthough it may be, is overcome by the subsequent boring or grinding. The boring appliance 101 is inserted and secured in the quill, the whole appliance swung back to operative position, and secured fixedly therein by tightening the clamps 33, and then the tube 100 of the boring device has inserted in it the shaft 102 connected by the jointed shaft to. any suitable-driving. mechanism,

desirably a drill press. The boring tool andthe quill 'in which it is now fastened are turned by this driving means and the hole bored by the tool 101 to the exact size required, which will be in precise register with the button which was previously in position. During this operation the friction ring 61 serves totake up the lost motion of the spindle so that it produces a smooth finished cut by the boring tool when fed down by the, feed handle 68 After such boring theentire appliance is removed and it will bejobvious that the. hole will have been placed in the plate. 20 in the exact position required. 1

The location of such hole may be determined with greataccuracy, say to the ten thousandth part of an'inch by a person of relatively little skill and the workis done expeditiously and with great precision.

Itis to be understoodthat this invention is not limited and restricted to the precise and exact features of construction of the adaptedto be fastened to the Work, a mem- I I ber bodily adjustable on said support, atool- .only transverse tc holder carried by. said member, fmeans to adjust said member in a right-line direction the axis of said toolholder; comprising means to guide said member in a right-line, and means to move the member in such right-line direction, and

an angularly adjustable mounting for said adjusting means, whereby said member may be adjusted in its own planein a right-line in any direction, substantially as described.

2. In ,an' appliance of the character de-..

scribed, the combination of asupport adapted to be fastened to the work, amember bodily adjustableon said support, a

tool-holder carried by said member, means to adjust said member in a right-line direction only transverseto the axis ofsaid toolholder, compirsing means to guidesaid member in a. right-line and means to move the {member in such right-linedirmtion, an

angularly adjustable mounting fors'aidadjusting means, whereby said member may be ad usted 1n its own plane in a right line in any direction, and means to lock said.

mounting-in adjusted position, substantially as described. I

scribed, the combination of a support adapted to be fastened to the Work, a member bodily adjustable on said-support, a toolholder carried by said member, means to adjust said member in a right-line direction only transverse to the axis of said tool.- holder, comprising means to guide said member 1n a right-line and screw-threaded means to move the member in such right-line direction, an angularly adjustable mounting for said adjusting meanswhereby said member may be adjusted in its own plane in a rightlme in any direction,- and means to lock said mountin in adjusted position, substantially as descri ed.

- 4. In an appliance of the character de--.

' scribed, the combination of a support, means to fasten said support to the work, a member bodily adjustable on said support, a tool-holder carried by said member, means adjustable mounting for said ad ustingmeans, whereby said member may be adas described.

scribed, the combination of a support, a

. whereby said member may be adjusted in its ownplane in a right-line in any 3. In an appliance of the character d eedto be fastened, to the wor to adjust said member in a right-line direction onlycomprising means to guide saidmember in a right-line and screw-threaded means to movethe member, an angularly justed in its own planein aTright-line in any direction, means to, lock said member to said support, and means to lock said j mounting against'movement, substantially '5. In an appliance of the character described, the combination of a support, a member bodily adjustable on said support, a tool-holder carried by said member, means to adjust said member in a right-line direction only transverse to the axis of said toolholder including spring-pressed means to engage and guide said member, means to lock said springpressed means against movement thereby confining the travel of the member to a right-line direction, and means to movesaid member, and an angularly adjustable mounting for said adjustingmeans.

whereby said member may be adjusted in its own plane in a right-line in any direction,

substantially as described.

6. In anappliance of the character d emember movable in its own plane on said support and having a cylindrical part, means to. adjust said member in its own plane in a right-linedirection only on said support in- H eluding a air of flat-ended guides engaging diametricailly-opposite points of said cylin drical part and means to move said member between said guides,- d an angularly-adjustable mounting for said adjusting means direction, 106 substantially as described.

7 In an appliance of the scribed, the combination of a support, a member movable -in its own plane on Send support and having a cylindrical part means to lock said member immovably to. said support, means to adjust said member in its own'plane in a right-line direction only on said support comprising a pair of means ,to'lock said guides in 611?.

means to move said. member between sai locked guides, an angularlyadjustable mounting for said adjusting-means whereby 1 said member may be adjusted inits own 7 plane in arigh -line inany direction, and means to lock said mounting on said Sup-. Port, substantially-as described. I 8. In an appliance of the character described, the combination of. a sulpport adapt v a hollowspindleor quill" mounted on said support adapted to removably accommodate a no so I character deed to be fastened to the work, a hollow-' spindle or quill mounted on said support and test-indicator operating-means or a tool, and

means to adjust said quill .on said support into register with a button-fastened in position on the work while the quill is equipped with the indicator operating-means and the appliance is equipped with a cooperating indicator, whereupon said indicator operating-means in the. quill may be replaced by the tool and the operation of the latter performed, substantially as described.

9, In an appliance of the"character described, the combination of a support adaptadapted to 'removably accommodate a testindicator operating-meansor a tool, means "to adjust said quill von said member into tool and the operation of the latter per-- formed, and a mounting for said support I permitting the latter and the parts carried thereby to be moved away from register with the button position and to be returned thereto without disturbing the positioning adjustments, substantially as described.

' 10. In an appliance of the character dey scribed, the combination of a support adapted to be fastened to the work, a hollowspindle 0r quill mounted on said support and adapted to removably accommodate a testindicator operating-means or a -tool, means toadjust said quill on said support into reg-. lster 'Wllih'fl. button fastened in'position on the work while said quill is equlppediwith the test-indicator operating-means and the appliance is equipped with a cooperating indicatonwhereupon the indicator operatlug-means in-the quill may be replaced by the tool and the operation of the latterperformed, and a hmged mounting for such support permitting the latter and the parts carried thereby to be swung away from reg.-

ister withthe button position and to be returned thereto without disturbing the positioning scribed.

1 1. In an ap liance of the character described, the com ination of a support adapted to befastened tothe work, a revoluble quill or hollow-spindle mounted on said adjustments, substantially as desup ortand adapted toremovably accommo ate a test-lndicator operating-means or a tool, and means to adjust said quill on said support into register with a button fastened in positiononthe work while the quill is equlpped with the igi d-lcator operating-means and the appllance'is'equipped with a coopcrating indicator, whereupon the indicator operatlng-means in the quill may be replaced with a tool and the o eration of the latter performed, substantial y as described.

12. In an appliance of the character'described,

the combination of a support adapted to be fastened to the work, a hollow-spindle or quill revolubly mounted or;

said support and adapted to removably ac commodate a test-indicator operating means or a tool, a test-indicator operating-means I adapted to be mounted in said quill and extend through the same, an indicator-adapted to be mounted in operative relation to said v operating-means adjacent to 'the' end of the quill remote from the work, and means to adjust said quill on said support into register with a button fastened 1n osition on the work while said quill is equipped with said indicator operating-means, whereupon said operating-means may be replaced by the tool and the operation of the latter performed, substantially as described.

13. In anlappliance of the character described, the combination 01:" a support adapted to be fastened to thework, a hollowspindle or quill'revolubly mounted on said support and adapted to removably accommodate a test-indicator operating-means or a tool, a test-indicator operating-means adapted'to be fixed to and within said quill and turn with the latter, an indicator adapted to be mounted on'the device in operative relation to said operating-gmeans, and means to adjust said quill on s'id support into register with a button fa tened in position on the work while said quill is equipped with the indicator operating-means, whereupon the indicator operating-means in the quill 'may be'replaced by the tool and the opera-.

tion of the latter as described. 7 14. In an appliance of the character deperformed, substantially scribed, the combination of a support adapted-to be fastened to the work, a quillhousing mounted on said support, a quill revolubly mounted in said housing, means to adjust-said housing transversely of the axis of the quill, and means to vary the position of'said adjusting means angularly about said housing whereby to permit a universal adjustment of the housing and the quill in their own planes, substantially as described.

15. In anappliance of the character described, the combination of a support having a plane surface, a quill-housing mounted 'on said support and having a plane surface bearing on the plane surface of said support, a quill revolubly mounted in said housing, means to adjust said housing in a right line transversely to the axis of the quill by sliding its said plane surface on that of the support, and means to vary the position of said adjusting means'angularly about said housing, whereby to permit a universal adjustment of the housing and quill in a plane parallel to said cooperatlng plane 'sura. faces of the housing and support, substantially as described.

16. In an appliance of the character de-' scribed, the combination'of a support, a;

' quill-housing mounted on said support and gage diametrically havingacircular part, a quill revolubly mounted in said housing, means said housing transversely of the axis of the quill comprisinga pair of members to enopposite pointsof said,

circular part to limit the movement of the housing to a rlght-line direction, and means to engage said housing at a point at rightangles to said pair of members and adapted.

to force the housing in said right-line direction, and means to vary the position of said adjusting means whereby to permit a universal adjustment of the housing and'quill in their planes, substantially as described.

17. Inan appliance of the character described, the combination of a support, a

- A member adapted to engage diametrically opposite points of said cylindrical portion thereby confining the movement of said housing on said'support to a right-linedirection, and means on said member adapted to engage said housing and adjust'the same in sa1d right-line dlrection, substantially as I pair of spring,- pressed flat-ended pins described. I

1 8. In an appliance of the character descrlbed, the combination of a support adapted to be fastened to the Work, a quillhousing mounted on said support having a cylindrical portion, a quill revoluble in said housmg, a supporting member angularly ad ustable on said support about said housing, mean to lock said member inad justed position, means on said member adapted to engage diametrically opposite points of said cylindrical portion thereby confiningthe movement of the housing on said support to a right-line direction, and means on said member adapted to engage said'housingadjust the same in said rlght-llne direction, substantially as described.

19. Inan appliance of the character described, 1 the combination of a support adapted to be fastened to the work, a quillhousing mounted on said support andhaving a cylindrical portion, a quillrevoluble in said housing, a supporting-member angu-v larly adjustable on said support,- apair of p ns spring-pressed toward and adapted to engage diametrically-opposite points of said cylindrical portion, means to lock said pins against movement thereby confining said housing to a movement between them in a.

scribed, the "combination to adjust them, means on just said housing in said right-line direction,

va right line direction, and means right-line direction, and means on said member adaptedtof'engage said housing and adjust the same in said right-line direction, substantially-as described.-

20. In an appliance of the character deof a support adapted to be fastened to the work, a quillhousingmountedon said support and hav-- ing a cylindrical portion, a. quill in said housing, a member said'sup-port, apair of sliding pins springressed toward aving flat ends adapted to tangentially engage diametrically opposite points of said cylindrical portion, means to lock said pins against movement confining said housing to a movement in a right-line direction between said member adapted to adand means to lock said member in adjusted position, substantially as described.

angularly adjustableon said cylindrical portion and 21. In an appliance of the character described, the combination. of a support, a

cylindrical member movable on said support, a pairof flat-ended pins adapted, to engage tangentially diametrically opposite points on thecylindrical surface of said member thereby restrictin the movements of said member to a right-line direction, and means to adjust said member in said rightline direction, substantially as described.

22. Inan appliance of the character described, the combination of a support, a cylindrical member adjustable thereon, a

port, an element angularly adjustable on.

said support, a pair of flat-ended pins on i said element adapted to engage tangentially diametrically opposite points on the cylindrical surface of said member thereby. restricting the movements of said member to I on said element to adjust said member in a right line direction, substantially as described.

24:. In an appliance of the character described, the combination of a support, a quill-housing mounted on said support, means to adjust said housing on said support in a right-line only transverseto the axis of thehousing, comprising means to guide said housing in a right-line only,

. means to move the housing in the direction defined by said guiding means, and an anand friction means to resist longitudinal movement ofthe quill in the housing, substantially'as described.

25. In an appliance of the character described, the combination of a support, a quill housing adjustably mounted on said 10 support, a quill revolubly mounted in said housing and adapted to accommodate a testindicator operating-means, means to adjust said quill longitudinally in said housing, friction means. to. prevent unintentional lengthwise movement of the quill in said housing, and means to adjustsaidhousing on said support transversely of'the-axle of said quill, substantially as described. I

' ERNEST J. SOHENDEL.

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