US2585305A - Radius tangent dresser - Google Patents
Radius tangent dresser Download PDFInfo
- Publication number
- US2585305A US2585305A US725596A US72559647A US2585305A US 2585305 A US2585305 A US 2585305A US 725596 A US725596 A US 725596A US 72559647 A US72559647 A US 72559647A US 2585305 A US2585305 A US 2585305A
- Authority
- US
- United States
- Prior art keywords
- dresser
- radius
- tangent
- head
- engaging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
- B24B53/065—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels having other than straight profiles, e.g. crowned
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
- Y10T407/2222—Tool adjustable relative to holder
- Y10T407/2244—Tool adjustable relative to holder by movement of seat relative to holder
- Y10T407/2246—Pivoted seat
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
- Y10T407/2272—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool to holder
- Y10T407/2282—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool to holder including tool holding clamp and clamp actuator
- Y10T407/2286—Resiliently biased clamp jaw
- Y10T407/2288—Integral with holder
Definitions
- Another object. of mylinvention is to. provide I5..
- my invention is; to provide an the handle 2l rotates the bushingv 4,.. the-plate; radius;tangentdresser'inawhich the moving'par-ts 6 and thehead 9'.. Spring-urged ballszdaredisf. thereof are sealed. posed in they apertures Zlandffbear against.: a-
- Another object. oimy invention is. toprovide thrust plate 25. to. hold.. the; flanged portions. of.: ⁇ a...radius .tangent dressent whereinv ⁇ adjilsirnents.l the bushing V4in. the. countersunk portion; 3 of.. may.. ⁇ be.- madeand',measurements may beac the aperture 2in. the support .I.. Asecondrhandle. curately. takerrsimply andillckly. ⁇ 2'I is; disposed onreducedr. end I4 of ⁇ the; shaftzI I.y
- Fig, 1 ⁇ is.a..vertica1.sectional.Viewofmy--novel-. thehandlell havinga radially' extending: apers- IadUSaDgentdressem. 45 ture 32. to.l permit rotation of the -lockscrewfw Fg- 2 iS a View taken 011 the 1111 2--2 0f Fig. g1.; by a screwdriver...
- A. facej plate 33a having: an. ar.- Fig. aiszanend elevational view of the sliding ⁇ cuate slotacis secured to the-.bushings byanyfl head of my novel radius tangent dresser; suitable -means such. asshrinking, and', an. in.
- Fig. 4 is a planvieW of.' myggnovel1 radius tangent v,dcatingz semifcircular'plate35is disposedaround.- dresser; 50 thevperiphery thereofl to. indicate: ⁇ the ⁇ amount ot .Y
- Fig. 5 is a view taken on the line 5.-.-5;oi ⁇ .1?ig. 4v rotationof. the-bushing. 4x and the:slidingrlieada9;.y with the toolholding arm in a' position to dress
- An indicating..finger431.;V is; secured to, asupport.' ⁇ the grinding wheel ⁇ witlra convex'y surface as membera.l disposed. on the topotthe'support.
- I- shown. .bx the fragmentaryy view of a grinding.. by.v a. capfserew. 39. ⁇ Thef'ace;plateaazistlockem Wheel in Fig'. ⁇ 5-.l;. 55 by means. of. a.
- threaded lockingv member 40 hav-r Fig.4 6is a-view, .takennntha lne.- 5 5 otFig.. 4: ing: a .threaded portion 4 If for ⁇ threadable; engage-.1 wit-h-.thel tocla holding. armin. a position to; dress.l a.: ment: with. a threaded apertureY .4I 'in-r: the ⁇ sup.. grindingwheel witnaconcayeffsurface asf shown; portrI.. by.l the,v fragmentary .view.of, the.
- Fig. 7 is: an end view. in elevation showingathe. 33. tolimit; the; rotational ⁇ movement. of. ⁇ theV face.. operating handle andtheindicating scaleonmy. plate. andi the;- attached; bushingial thee-tool novelradiustangent dresser.. holderi..
- a tool holding arm l0 carries a dressing tool 3
- Complementary engaging members 52 and 53 have threaded apertures 54 and 55 adjacent the bottom portions thereof for alternately engaging a screw member 56 to secure a plate member 51 adjacent the bottom of lone or the other of the complementary engaging members 52 and 53.
- Complementary engaging surface 52 has a longitudinally slit portion 58 for receiving a locking screw member 59 which engages a threaded aperture 60 in the complementary engaging surface 53.
- the tool holding arm 50 has a horizontally split portion 62 with a dovetail groove 63 adjacent the outer end thereof.
- a removable tool holding member 64 has a dovetail projection 65 for engaging the dovetail groove 63 in the tool holding arm 50.
- a locking screw bolt 66 extends through the tool holding arm 50 and threadably engages a threaded aperture 61 to secure the dovetailed projection 65 on the tool holding member 64 in the dovetailed groove 63.
- the slidable head 9 is held against reciprocation by locking members 44 and 45 secured by screw bolts 41 and 46 respectively on the supportplate 6.
- the tool holding arm 50 is moved toa position shown in Fig. 5 to dress a convex surface on a grinding wheel as shown in Fig. 5-a.
- the stop member 51 is secured adjacent the bottom of the engaging surface 52 by the screw member 56, and the measurements are made between vthe stop member 51 and the bottom of the complementary engaging surface 53.
- the stop member 51 is attached adjacent the bottom of the engaging surface 53 as shown in Fig. 6 and measurement is made between the stop member 51 and the bottom of complementary surface 52.
- Dressing tool 5I is centered by the use of any suitable measuring instrument or block. After the tool 5l is centered, the engaging members 52 and 53 are moved relative to each other and measured.
- locking member 40 When it is desired to dress the grinding wheel tangent to the radius thereof, locking member 40 is released and the face plate 33 is rotated by means of handle 2
- the locking members 44 and 45 are then rotated to free reciprocating head 9, thereby permitting reciprocating movement of the tool holding arm 50.
- the handle 21 is then rotated, the cam roller I1 on the end of the crank arm I5reciprocates in the slotted portion I9 in the reciprocating head 9 and the tool holding arm 50 reciprocates, thereby dressing the grinding wheel to the desired angle tangent to the radius selected.
- crank arm and the vertically slotted portion in said head being enclosed in operation.
Description
Feb. 12, 1952 K. M. FRrrTs RADIUS TANGENT DRESSER 2 SHEETS- SHEET l Filed Jan. 5l, 1947 m4 Om.
Feb. 12, 1952 K, M FRn-Ts 2,585,305
RADIUS TANGENT DRESSER Filed Jan. 5l, 1947 2 SHEETS-SHEET 2 Patented Feb. f2, 1952 v .mums 'rANGENnnaEsssa Kenneth M. Frias.. Erie, Pa..
AppxmmORJanuarys1, 1941, serial, No.. 725,596
Claims... (Cl. 12s-11)..
, 1 2.fr This;A invention relatesgeneraHy to:y grinding and; 'ifshowzasupport .I' fordisposal on..the,table;v Wheel dressers andmore. particularly-.tof grinding. of a.. grinding. .machinei anyasuitabla` means being;V wheel dressers. for convex.. on concave., surfaces.r providedvfto. hold th.esupport.;.l oma-tabla (not. auditor-dressing awheel. tangentitorthe radius. shown-9.,. The supportfl nasa longitudinally-ex-e' thereof. 5 tendingebore 2. withf. a counterborevfor receiving A11 dev-looserv this character;v made...according.' a. bushingA -havingaqlanged portion; 5. The.
tothe teachings; of. the` prior. art-.and withwhich bushing 4 is'ejournalledin the.; bore. l.2.' andisrd- Liam familiar;v have?V beeneverycomplicated,.and tatabletherein'.A Asupporting plateftssecured utilize racks.gears...andswingingtables.` Inthese by..any.suitable means.; totheA flanged..portion..5r prior. (1I-:vices erneryvdustrand` other deleterious 10 of the bushing' 4-11and. hasa projecting..doveta-iledv mattergetsintogthe teeth, of the. gears and racks. portion 'l for slidablyreceiving-thegrooved doveandbetween the tablesand quickly wea-rs thesurtailed; portions 8.0i.' a, reciprocatinghead.- 9.. One... faces kdowx1i',o a. point-where the. machines have side Izll *of* the. dovetailedportionsdof thefhead .$1 considerable play, causing;inaccuracyandthefop-` isremovably attached by screw bolts 80 and has'y eratiorithereof becomesdifdcult. Thesefprior def 15 spring-urgedhalls 81k disposedin apertures; 82 vicesrequire. considerable time to sei-,Y1 up and for; bearing. against'. the dovetail.projecting;:pore-r measuring blocks and. other. measuring devices tion I of the. support; I-vrtov prevent anyyfree play must. bep-so'I positioned` that considerable time is. therebetween. A longitudinally extendingshaft, taken. to; obtain afsetting within reasonably close I I. .having reduced end: portions', I2 and. [3.015.` op.- tolerances.. positeends thereof isjournalled in the bore -.I4; Ity is., accordinglyan. object. of my invention to inthe bushing 4:. A ,crank arm, I5 is xsecuredto, provide aradius tangent dresser for grindingvr the `reduced endl I2. 'ofthe shaftlI by shrinking wheelswhich overcomes the aloove and other deor any. other suitable means, the.crank/arm.. 15;, fects in, present radius-tangent dressers andit is being-.movable in a recess:-I.6=.in the-.support'..platef.yV moreaparticularlyan; object Vof my invention Vto 6.- A roller cam. IJ'I issecured` totheouterendo: provide,- a radius tangent dresser. for grinding. the. crank arm lrbyfpin.' I8-' The roller.'` cam-I1:
wheelswhich. is;y simple inicunstructiom econom.- is disposed in a. verticallyI extending-...slotted pors-l ical.incesti,economicalinmanuiacture-and.eiiitionIS-.in theY reciprocating. head. .9 andzcausesx cientjinperation'... it-to.. reciprocate upon; rotatiortot the crank arm.,
Another object. of mylinvention is to. provide I5.. A knurled handle 2l .having longitudinally; a. radius.- tangent dresser which; eliminates all extending. apertures 22: iselocked xedl-y on-fthe. gears. and racks.. bushing. 4. by lock .screws` 23r so thatrotation; ofi- Anotherobject, ot; my invention is; to provide an the handle 2l rotates the bushingv 4,.. the-plate; radius;tangentdresser'inawhich the moving'par-ts 6 and thehead 9'.. Spring-urged ballszdaredisf. thereof are sealed. posed in they apertures Zlandffbear against.: a-
Another object. oimy invention is. toprovide thrust plate 25. to. hold.. the; flanged portions. of.:` a...radius .tangent dressent whereinv` adjilsirnents.l the bushing V4in. the. countersunk portion; 3 of.. may..` be.- madeand',measurements may beac the aperture 2in. the support .I.. Asecondrhandle. curately. takerrsimply andillckly. `2'I is; disposed onreducedr. end I4 of` the; shaftzI I.y
Other; objects Vof v-myinvention will. become:-.40 "and has. an. outwardly extending hub; portion. 2.8: vr evident from the following detailed description. which ts: into the bore. 219-in1the1 handle;z.2,-I;., taltenA in. conjunction. with the'. accompanying Therhandle 2'I issecured to Lthemeducedend. It@A drawings, in which.; ofl the shaft4 I I. .by means` of a. locking screw*T 30,
Fig, 1` is.a..vertica1.sectional.Viewofmy--novel-. thehandlell havinga radially' extending: apers- IadUSaDgentdressem. 45 ture 32. to.l permit rotation of the -lockscrewfw Fg- 2 iS a View taken 011 the 1111 2--2 0f Fig. g1.; by a screwdriver... A. facej plate 33a having: an. ar.- Fig. aiszanend elevational view of the sliding` cuate slotacis secured to the-.bushings byanyfl head of my novel radius tangent dresser; suitable -means such. asshrinking, and', an. in.
Fig. 4 is a planvieW of.' myggnovel1 radius tangent v,dcatingz semifcircular'plate35is disposedaround.- dresser; 50 thevperiphery thereofl to. indicate:` the^ amount ot .Y
Fig. 5 is a view taken on the line 5.-.-5;oi`.1?ig. 4v rotationof. the-bushing. 4x and the:slidingrlieada9;.y with the toolholding arm in a' position to dress An indicating..finger431.;V is; secured to, asupport.'` the grinding wheel` witlra convex'y surface as membera.l disposed. on the topotthe'support. I- shown. .bx the fragmentaryy view of a grinding.. by.v a. capfserew. 39.` Thef'ace;plateaazistlockem Wheel in Fig'. `5-.l;. 55 by means. of. a. threaded lockingv member 40= hav-r Fig.4 6is a-view, .takennntha lne.- 5 5 otFig.. 4: ing: a .threaded portion 4 If for` threadable; engage-.1 wit-h-.thel tocla holding. armin. a position to; dress.l a.: ment: with. a threaded apertureY .4I 'in-r: the` sup.. grindingwheel witnaconcayeffsurface asf shown; portrI.. by.l the,v fragmentary .view.of, the. grinding; wheel; Stop members 'III may be disposedilin.the"V semi-V inlig.,6e-mand- 60 circular ShapedarCuate-slOt;34.\in..the-faceplate Fig. 7 is: an end view. in elevation showingathe. 33. tolimit; the; rotational` movement. of.` theV face.. operating handle andtheindicating scaleonmy. plate. andi the;- attached; bushingial thee-tool novelradiustangent dresser.. holderi..
Referring now to the drawings, Figs. 1 2, 3, 4, A tool holding arm l0 carries a dressing tool 3| for dressing a grinding wheel (not shown) and has a beveled or V-shaped engaging surface 52 for engaging a complementary beveled or V- shaped engaging surface 53 on the reciprocating head 9. Complementary engaging members 52 and 53 have threaded apertures 54 and 55 adjacent the bottom portions thereof for alternately engaging a screw member 56 to secure a plate member 51 adjacent the bottom of lone or the other of the complementary engaging members 52 and 53. Complementary engaging surface 52 has a longitudinally slit portion 58 for receiving a locking screw member 59 which engages a threaded aperture 60 in the complementary engaging surface 53. The tool holding arm 50 has a horizontally split portion 62 with a dovetail groove 63 adjacent the outer end thereof. A removable tool holding member 64 has a dovetail projection 65 for engaging the dovetail groove 63 in the tool holding arm 50. A locking screw bolt 66 extends through the tool holding arm 50 and threadably engages a threaded aperture 61 to secure the dovetailed projection 65 on the tool holding member 64 in the dovetailed groove 63.
The slidable head 9 is held against reciprocation by locking members 44 and 45 secured by screw bolts 41 and 46 respectively on the supportplate 6.
In operationthe tool holding arm 50 is moved toa position shown in Fig. 5 to dress a convex surface on a grinding wheel as shown in Fig. 5-a. The stop member 51 is secured adjacent the bottom of the engaging surface 52 by the screw member 56, and the measurements are made between vthe stop member 51 and the bottom of the complementary engaging surface 53. For dressing a concave surface as shown in Fig. 6-a, the stop member 51 is attached adjacent the bottom of the engaging surface 53 as shown in Fig. 6 and measurement is made between the stop member 51 and the bottom of complementary surface 52. Dressing tool 5I is centered by the use of any suitable measuring instrument or block. After the tool 5l is centered, the engaging members 52 and 53 are moved relative to each other and measured. It will be noted that the wedging action between the beveled surfaces of members 52 and.53 and between the outer face of the reciprocating head 9 provides a secure connection once the measurements are made and the tool holding arm 50 is set for operation. The engaging surfaces 52 and 53 are substantially V-shaped.
When it is desired to dress the grinding wheel tangent to the radius thereof, locking member 40 is released and the face plate 33 is rotated by means of handle 2| to the desired angular position and the face plate 33 is then locked by the locking member 40, thereby locking the attached tool holding arm 50 in a predetermined angular position. The locking members 44 and 45 are then rotated to free reciprocating head 9, thereby permitting reciprocating movement of the tool holding arm 50. The handle 21 is then rotated, the cam roller I1 on the end of the crank arm I5reciprocates in the slotted portion I9 in the reciprocating head 9 and the tool holding arm 50 reciprocates, thereby dressing the grinding wheel to the desired angle tangent to the radius selected.
It will be evidentfrom the foregoing that I have provided a grinding wheel dresser which-is very simple in construction and operation and v ery close tolerances, which has simple means of taking accurate measurements. and in which simple means are provided for dressing the wheel with which a grinding wheel may be dressed'tov tangent to any predetermined radius with all parts of the machine sealed against emery dust and dirt.
Various changes may be made in the specific embodiment of my invention without departing from the spirit thereof, or from the scope of the thereof enclosed by said projecting male por-f tion on said support plate, a, crank arm attached to said shaft, a roller cam on the end of said crank arm slidable in a straight line in said slot in said slidable head upon rotation thereof whereby said slidable head is reciprocated, aligned handles on said bushing and said shaft, respectively, for rotating same, and a straight line movable tool attaching member carried by said slidable head and movable normal thereto for attaching a tool holder to said slidable head,A
said crank arm and the vertically slotted portion in said head being enclosed in operation.
2.-A radius tangent dresser as set forth in claim l wherein said bushing has a shoulder. portion held against the side of said supportv member by spring urged members engaging the opposite side-of said support member and disposed in the handle attached thereto.
3. A radius tangent dresser as set forth inA claim 1 wherein one side of said outwardly projecting female portion of said slidable head is secured by removable fastening members whereby said head may be removed.
4. A radius tangent dresser as set forth in claim 1 wherein said grooved portions of said female projecting portion on said head have spring urged ball members disposed laterally therein for engaging the male projection on said support plate.
5. A radius tangent dresser as set forth in claim 1 wherein locking members are carried by said support plate to engage opposite ends of said sliding member to lock it against sliding movement.
KENNETH M. FRITTS.
REFERENCES CITED The following references are of record in the le of this patent:
UNITED STATES PATENTS Number Name Date 2,039,646 Hoisington May 5, 1936 2,195,065 Wallace Mar. 26, 1940 2,257,452 Binns Sept. 30, 1941 2,294,008 Turrettni Allg. 25, 1942 2,336,758 Statia Dec. 14, 1943 2,343,949 Bellinger Mar. 14, 1944 2,355,020 Turrettini Aug. 1, 1944 2,404,465 ,Statia July 23, 1946 Hopkins Jan.413, 1948 i
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US725596A US2585305A (en) | 1947-01-31 | 1947-01-31 | Radius tangent dresser |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US725596A US2585305A (en) | 1947-01-31 | 1947-01-31 | Radius tangent dresser |
Publications (1)
Publication Number | Publication Date |
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US2585305A true US2585305A (en) | 1952-02-12 |
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ID=24915197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US725596A Expired - Lifetime US2585305A (en) | 1947-01-31 | 1947-01-31 | Radius tangent dresser |
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US (1) | US2585305A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2736310A (en) * | 1954-03-04 | 1956-02-28 | Baumann Poul Hoegh | Wheel dressers |
US3603302A (en) * | 1968-10-11 | 1971-09-07 | Jean Francis Payea | Radius and angle dresser device |
US4018207A (en) * | 1975-10-14 | 1977-04-19 | William Berry | Device for dressing grinding wheels |
US4459969A (en) * | 1982-01-15 | 1984-07-17 | Edwin Russ | Overhead radius dresser for grinding wheels |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2039646A (en) * | 1934-08-22 | 1936-05-05 | Nat Acme Co | Eccentric cutting attachment for metal working spindle machines |
US2195065A (en) * | 1938-11-05 | 1940-03-26 | Chrysler Corp | Finishing apparatus and method |
US2257452A (en) * | 1939-04-10 | 1941-09-30 | Cincinnati Grinders Inc | Metal finishing |
US2294008A (en) * | 1939-06-24 | 1942-08-25 | Genevoise Instr Physique | Device for dressing profiled grinding wheels |
US2336758A (en) * | 1942-09-26 | 1943-12-14 | Edward L Chapman | Grinding wheel truing device |
US2343949A (en) * | 1941-02-18 | 1944-03-14 | Franklin S Bellinger | Radius dresser for grinding wheels |
US2355020A (en) * | 1941-04-30 | 1944-08-01 | Firm Soc Genevoise D Instr De | Apparatus for truing grinding wheels |
US2404465A (en) * | 1943-09-16 | 1946-07-23 | Edward L Chapman | Radius to tangent compound angle dresser |
US2434615A (en) * | 1945-05-17 | 1948-01-13 | Hopkins William Walter | Dressing device for grinding wheels |
-
1947
- 1947-01-31 US US725596A patent/US2585305A/en not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2039646A (en) * | 1934-08-22 | 1936-05-05 | Nat Acme Co | Eccentric cutting attachment for metal working spindle machines |
US2195065A (en) * | 1938-11-05 | 1940-03-26 | Chrysler Corp | Finishing apparatus and method |
US2257452A (en) * | 1939-04-10 | 1941-09-30 | Cincinnati Grinders Inc | Metal finishing |
US2294008A (en) * | 1939-06-24 | 1942-08-25 | Genevoise Instr Physique | Device for dressing profiled grinding wheels |
US2343949A (en) * | 1941-02-18 | 1944-03-14 | Franklin S Bellinger | Radius dresser for grinding wheels |
US2355020A (en) * | 1941-04-30 | 1944-08-01 | Firm Soc Genevoise D Instr De | Apparatus for truing grinding wheels |
US2336758A (en) * | 1942-09-26 | 1943-12-14 | Edward L Chapman | Grinding wheel truing device |
US2404465A (en) * | 1943-09-16 | 1946-07-23 | Edward L Chapman | Radius to tangent compound angle dresser |
US2434615A (en) * | 1945-05-17 | 1948-01-13 | Hopkins William Walter | Dressing device for grinding wheels |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2736310A (en) * | 1954-03-04 | 1956-02-28 | Baumann Poul Hoegh | Wheel dressers |
US3603302A (en) * | 1968-10-11 | 1971-09-07 | Jean Francis Payea | Radius and angle dresser device |
US4018207A (en) * | 1975-10-14 | 1977-04-19 | William Berry | Device for dressing grinding wheels |
US4459969A (en) * | 1982-01-15 | 1984-07-17 | Edwin Russ | Overhead radius dresser for grinding wheels |
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