US1214629A - Steady-rest. - Google Patents

Description

J. S. W ILCOX, 1a., A. TURNER & H. W. DUNBAR.

STEAD Y REST.

APPLICATION FILED APFLZB, I916.

1,214,629. Patented Feb. 6,1917.

2 SHEETS-SHEET I.

J. S. WILCOX, JR, A. TURNER & H. W. DUNBAR.

STEADY REST. APPLlCATlON FILED APR.28. l9I6.

EDASTATESHPATENT OFFICE.

. JOSEPH S. WILCOX, JR., ALBERT TURNER, AND HOWARD W. DUNBAR. OF WORCESTER, MASSACHUSETTS. ASSIGNOBS TO NORTON GRINDING COMPANY, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

STEADY-REST.

Specification of Letters Patent.

Patented Feb. 6, 1917.

Application filed April 28, 1916. Serial No. 94,286.

. A T all whom it may concern:

Be it known that we, JOSEPH S. lVILCox, Ji-i, llunnrr TURNER, and I-Iowsu'o T. DUN- nan, citizens of the United States, all residing at \Vorcester, in the county of range the guide shoe support so that it will .or dislooating any of directly engage the table at its lower or innerv end. Such engagement has been found objectionable, as the support is sub- 'ect to slight horizontal movements or virations caused by the rotation of irregular; work and these repeated slight movements or vibrations of the support eventually wear away the bearing surface of the table, cansin%, irregular depressions therein.

t isa principal object of our invention toaivoid this defect by providinga construction of steady rest in which the guide shoe' support shall be entirely sustained by the stand above mentioned thus avoiding any wear upon the bearing surface of the table, due to the vibratory movement of the support.

An important feature of our invention relates to the provision of a suitable housing for the cooperatinghearing portions of the support and stand, whereby dirt and water are effectually excluded from the hearing surfaees.

A further feature of ouia invention relate's to the construction of a steady rest in which all of the parts are so connected that the rest may be removed and handled as a unit Without th. possibility of losing in) parts thereof. Our invention furthei \relates to certain arrangements and combinations of parts which will be,hereinaftefi leseribed and more particularly pointed out in the appended claims.

A preferred form of our invention and two modifications are shown in the drawings in Which- Figure 1 is a side elevation of a preferred form of our invention; Fig. 2 is a to plan view of the inurlianlslli shown in 151g. 1,

with certain parts omitted for the sake of clear-Hess; Fig. 3 is a partial vertical sectional. view. taken along the line 3-3 in Figs. 2 and -l and drawn on an enlarged scale; Fig. -l is an enlarged cud elevation of the parts shown in Fig. 3, with the housing broken away to show the parts within; Fig. 5 is if side elevation of a modified form of our invention. and Fig. 6 is a side elevation of a second modification.

Referring to Figs. 1 to 4-. wc have indicated the grinding wheel at V, a cylindrical piece of work at Y. and the work supporting table at '1. The steady rest herein shown comprises essentially a stand 10 and asupport 11. to which the guide shoc 12 is.

secured. The guide shoe 12 positioned on the support 11 hymcans of a dowel pin 13 and a pair of guide pins 14 but any other suitable or convenient fastening devices may he substituted therefor.

The stand 10 is provided with bearing surfaces 15 and 16 which engage 'coiiperating bearing surfaces on an up\\'ardl v projecting or llaugcd portion of the table. T. The stand is longitudinally adjustable upon the tahlc and may he firmly secured in any desired position l'iy means of a looking handle 17. said handle being connected by a link 18 to a locking lever 19. pivoted at 20 to the stand 10 and migaging :1 rectangular bar 21. fixed to the upwardly projecting portion 'l of thetahlc Tand cxtending the full length of the table. \Vhen .the handle 17 is moved downward the handle and the link 18 form a toggle joint,

forcing the lever 19 to the locking p'ositionov and retaining the lever in such position until manually released. The stand 10 is provided with a downwardly and inwardly cX- tending projection 22 having a hearing sur-] relatively to the stand 10 is-seeured by means of an, adjusting screw 28, threaded into the stand 10and engaging a shoulder 29formed on thein sifde of the support 11.

"parts to be lost or displaced.

- Jn the form of our invention shown in At its lower inner end the support 11, in the preferred form, is provided with a roll 30 which engages the depending portion 22 of the stand 10. As shown in the drawings, the roll 30 is grooved centrally and engages a ribbed plate 31, secured by screws 32 to the upper surface of the depending projection 22. The roll 30 is 1'0 tatable upon a stud 33 formed on a swinging arm 3% pivoted at 35 to the side flanges or housing 11 of the sup ort 11. Vertical adjustment of the guide s we support issecured by means of an adjusting screw 36 threaded into an inclined projection 37 formed on the support 11. A plunger 38 slidable in hearings in the support 11 is engaged at its upper end by the adjusting screw 36 and at its lower end engages a shoulder 39 upon the swinging arm 34. Partial rotation of the screw 36 will cause longitudinal movement of the plunger 38, thereby swinging the arm 3-1 about its pivot 35 and raising and lowering the support relatively to the standlO and the table T. The grooved roll and ribbed plate prevent lateral displacement of the support.

llaving thus described the construction of the preferred form of our invention, the operation thereof will be clearly apparent.

The steady rest is first adjusted longitudinally to the desired position and is then clamped in position by means of the handle 17. T he guide shoe support. is then adjusted horizontally by means of the adjusting screw 28 and vertically by means of the adjusting screw 30. The screw 28 forms a stop which limits outwardmovement of the guide shoe support but the support is free to move inward or toward the work and can thus follow'jo a certain extent the irregularities of the piece Y. This vibratory movement of the support causes the roll 30 to move slightly inwardly and outward along the track 31 which parts are particularlydesigned to permit such movement. It will be clear, however, that no relative movement whatever occurs between the rojection 22 of the stand 10 and the table T, and therefore 'there is no tendency to wear away the table in irregular depressions. Furthermore the roll 30 and plate 31 are inclosed by the housing 11 of the support 11 and are thus fully protected from dirt and water. As the support and stand are permanently connected ythe links 24 the device may be removed and handled as a unit and there are no loose Fi 5 the construction is similar in most respe ts to that already described, the prin cipal iflerence being in the mounting of the roll 3%) In this modification the roll 30, instead 0 eing mounted upon a swinging arm as in the preferred form, is mounted directly upon the end of a bar 40 which is slidable in a bearing in the support 41 and is revented from angular movement in sai hearing by a pin or key 42, which engages a slot or key'way in the support 41. At its upper end the bar 40 is engaged by the lower end of an adj usting screw 43 by which the bar 40 may be moved downwardly in its bearing to secure vertical adjustment of the guide shoes. The horizontal adjusting mechanism and the general operation of device is identical with that of the preferred form.

In Fig. 6 we have shown a second modification in which slightly diilerent mechanism is employed for raising and lowering the guide shoe support. The rocking lever 50 is pivoted at 51 to'the depending portion 52 of the stand 53. The left hand end of the .lever (as viewed in Fig. 6) is engaged by zontally upon its links 57 and 59 without causing any relative movement between the stand and the table. It will be clearly evident that the downward pressure on the plunger will force the link 57 and the pivot 58 upwardly, thereby raising the support 55 as in the preferred form.

Having thus described our invention and two modifications thereof, it will be evident that other changes and modifications can be made therein by those skilled in the art with departing from the spirit and scope of our invention as set forth in the claims and we'do not wish to be otherwise limited to the details herein disclosed.

What we claim is:

1. In a grinding machine, a Work table,

a stand,1neans to secure said stand in adjusted, longitudinal position on said table, and a guide shoe support movably mounted on said stand, said stand and support being link-connected at their upper outer ends whereby separation of the parts is prevented and the path of movement of said su port is determined, and said support at its rower end swing free to move relatively to said stan a stand, means to secure said stand in adjusted, longitudinal position on said table and a guide shoe support movably mounted on said stand, said support being entirely sustamed by said stand and being adjustable both vertically and horizontally thereon.

3. In a grinding machine. a work table. a stand. means to seeure said stand in adjusted. longitudinal position on said table. and a guide shoe support movahlv mounted on said stand. the lower inner portion of said support being provided with a roll engaging a depending hearing portion of said stand. whereby said support is vertieally positioned.

4. In a grinding marhine. a \\'Ut'l\' table. a stand. means to seeure said stand in adjusted. longitudinal position on said table. and a guide shoe support movably mounted on said stand. said stand and support living linleeonneeted at their upper outer ends and said support at its low er end being true to move on said stand and being entirel) sustained therelrv. means being also provided for forcing the support llorizolitall) toward the work and for raising it relatively to said stand.

i: 5. 'In a grinding maehine. a work table. a stand. means to seeure said stand in ad justed. longitudinal positioiron said table.

and a guide shoe support movalltv mounted on said stand. said support and stand hav ing depending eoiiperating hearing portions ell'eetive to sustain the inner lower end ol' said support and said support l'ormiug a :asing 'l'or said depending hearing portions. wherelrv dirt and water are exeluded therefrom.

H. In a grinding maehine. in eouibination. a work table. a stand. means for seeuring said stand in adjusted longitudinal position on said talile. said stand having a de 'iending projeetion engaging a portion of said table below the level of the'axis ol' the \VUI'li. a guide shoe support link-eouneeted to the up r part ol said stand. means 'to move said support horizonl'allv relatively to said stand. and means eo-aeting with-tho depending projeetion of said stand for adjusting said support vertirall).

7. in a grinding maehine. a work table. a stand having a lower portion engaging said table. means to seeure said stand in adjusted longitudinal position on said table, and a guide shoe support entirely sustained by said stand, said support being link-conneeted to said stand whereby horizontal adjustment of said support is permitted, and said support having a roll atljustahly mounted therein and engaging the lower portion of said stand to! vertieal adjust ment oi said support.

h. in a grinding maehine, a work table, a stand having a lower portion engaging said tahle, means to serure said stand ill tltl: justed longitudinal position on said table, and a guide shoe support entirely sustained Irv said stand. said support being link-conneeted to said stand. whereby horizontal adjustment of said support is permitted, and said support \having a roll atljnstably mounted therein and engaging the lower ortion of said stand. said roll being carried by a swinging arm pivotedto said support; and said support having a plunger engag ing said ariii-i and having means for moving, said. plunger longitudinally whereby vertieal aaljustment of said guide shoe sup- .-port may he o tained.

S). In va grinding maehiue. a work table,

a stand having a lower portion engaging said talile. means to seeure said stand in adjusted longitudinal position on said table.

and a guide shoe support entirely sustained by said stand. said support being link-connert'ed to said stand. whereby horizontal ad justment ol' said support is permitted and said suppi'irt having a grooved roll adjustahlv mounted therein and said stand having a rililied hearing plate eooperating with, said roll whereby sidewise movement of said support relative to said stand is prevented.

in testimony whereof we have hereunto set our hands.

JOSEPH h. \VITK'UX. Jn. ALB lfilt'l TU RN E R. HOW'ARI) W. DUNBAR.

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