US2672634A

US2672634A - Buffing and polishing machine

Info

Publication number: US2672634A
Application number: US139512A
Authority: US
Inventors: Lee H Burnham
Original assignee: Individual
Current assignee: Individual
Priority date: 1950-01-19
Filing date: 1950-01-19
Publication date: 1954-03-23
Anticipated expiration: 1971-03-23

Description

March 23, 1954 L. H. BURNHAM 2,672,634

BUFFING AND POLISHING MACHINE Filed Jan. 19, 1950 2 Sheets-Sheet l L at h. Burn/7am INVENTOR.

March 23, 1954 H. BURNHAM 2,672,634

BUFFING AND POLISHING MACHINE Filed Jan. 19, 1950 2 Sheets-Sheet 2 Fig.8.

ii WWW Lee h. Bum/mm INVENTOR.

By zsm Patented Mar. 23, 1954 v 'jBUm'NG POLISHING MACHINE .Lee H. ,Burnham, Leesisummit; Mg. ilAPPliWfiwfla-nuary Ser-idl1No;1139,512

lzclaims. (01.415448 This invention relateseto-new and .-usefu1- imhaving an open bottom and gamma Wang. as-rprovements: inwlouffinaand polishing machine Avhollowislot-ted iiortioneor zmotormousin l4. I lan he mrimary Object .of; the present invention :asdispeseda eccentrica11y.. mes from 18?) provide a bufiing and-polishing-machine inv-the ;:,upper wall :I2;iand- 1spreferablyzigintegmlly cluding a rotarvmember; va surface treatingihead 5 formed' with the upper wall :12.

detachably secured touandnrotatablewith the Arsuitablevelectric -motor -is mountedviwithin .member and a-novetand improved manually optithehollowportion-Mandi aconneetedethrou h eratedmeans-:forquicklys-and readily-detaching rany. suitablerldrive"means,,ssuclrtas'rgears;t0 a .:the, head from the rotary memberto permit anrotarymember I 6 Y ithaizis .i ehc1osec1== within *the 1* other -head to re lace the first Y head. m -casinew-l 0 for rotation r AISWitChTCI8 0011131015 the i A-zstill-furtherr-aimeof the. present invention is circuit to the motoriwrthinthe portion --l.i4 i;and is to provide a buflingl vand.polishing.maohine of the r mounted 1 upona 1hollow'support oirswitch teasing aforementioned characterthat is extremely small i2 0 forming a unitary martofiatthe mainxeasing "I 0- --.and "compact-11in: structure, erelatively light in The rotary-member l-finiscprovtidedwwi-th awer- :-=-wei.ght, strong randreliablein use, neat and atlatioa'lrborefi having.;a:-reduced upperportion tractive in flppearanceaeificientrand durable in that registers withvan aperture 'zsiiinj-lthe'jupper operation,- relatively inexpensive to manufacture, wall 1210f the casingtzlfl: .iTheainner-wahiof the and otherwise rwell adapted for. the purposes for horse =22; is formedwithxa continuous eham'iels'28 which the-sameds intended, :anda-pair "of-diametrically Qnposed--rlgevwa s 3ll. -Otherobiects-and-radvantages reside in the de- -'-,Theynumeralru-:represents -.a-w-surtace::treating stailsfof rconstructionand operation as more fully headorhrush :head ,havingithesusualrbrist1es 34. hereinafter described and-claimemereference be- -A-posts36.-rises from a. base-BBrOnfiIiheJHDDCr'wall 1 ring; had to the: accompanying :drawings ,forming of. the headk324andrinc1udes a'areducedzupner end p partthereof; wherein slikesnumerals refer to like "".DOItiOIIi4.FfOIhreceptionjn-the reduced portion 24 -'parts throughout, and in which: 25* of the 1 bore: 22. A pair pot diametrica11yropn0 Figure l isasideelevationaltview oi theipresent w:iheys'ronlugs421cmtherpostrtfizto,itheebaseitand '-;inventionshowingtherswingablerhandle.attached are adapted to enter the keyways rforirotation thereto, and with :parts'of the machine rbroken 1-of the hQadT3ZWWith$116 memberelfi. J away fort.:the:convenienoe ofnexplanation; t-Mea-ns istprovidedefor releasahly securing. the .Figure 2 is a plansview-of Figure1; 1 head :32etothe rotary member J5.- 'I'hisameans Figure 3-is aside elevationalviewufthe lpresent consists of a teat or protuberance:onsthe' post imachine andshowing a'stationary handlemoune -r 35;:that'wi1lsnapwinto:thenchannel: nvader-the post ed thereon; 1 -35 isinserted into-the-bore:22. "Figure 471s a plan view of Figure 3; Additionalsmeans is-:-providedillorireleasine the Figure 5 is a fragmentary perspective view of ar-post filionrithe-i'rotary memberzandrmoreparticuthe; surface treatina head and" more particularly larlyrrorcingthe protuberance-M- i romthechanthe attaching post'of. thelsurface. treating head; rzneltzfli .zlhis'ilatest ,meansrisvshown bestin-E'ig- Figures is an enlarged sectional view taken ure 7 of the drawingsanduncludes:azrodMi-havsubstantially on the planeof section linedi -fi of :z:ing.lateralaprojectiomd 8rand-I50 at its ends-.1 The t Fi ure 1; 4i) lproziectioniimterminates:in'afin erigripwii :and I Figure? is aperspectiveview of the-releasing ;-.-;-the5projeotion -"5.0 is: also providedzwithaa eamrsurmeans used in--the--present invention= per se; -a;:ufaceri hioraidingiagairistlthe LiBDBrtWitlL- lkoi the Figure 8 -isanenlarged dtail sectional view iv'ecasingllfl. taken substantially-on the pl'ane of eaction line t "Ffherrocflflais ,jgurnaledtfgligljotafiQnfplfithe511p- 8-8 of Figure,4; p'ortt20 withstheiprogiectionaflfleexposndzfrom the li'igure 9 is an elevational vieit taken substansupport 20 and with the projoetionetfledisposed I tially .on the pla eofrseotionline 9- 9f6fFigure ix-withimtheisupportitllf fl'herrod alfizisrretained in .18; and, 1 'fj position-.iinzthesupport mbyia'nv suitableimeans Figure "10 is an enlarged 'detail sectional view as alrlug-rifiiomthe rodnflfioandaspacedsirom taken substantiallypn'theplane of'se'ction line limithes-zprojeotionwill; This lugtfunctionsiasz ar-stop III-Ill of Figure 1. to limit sliding movement of the rod relative to Referring now to the drawings in detail, the support and may assume the form of a set wherein for thepurpose of illustration, there is screw.- v.

disclosed a preferred embodiment of the present The projection 48 overlies the upper extremityinvention, the numeral l0 represents a casing of the portion 40 which extends upwardly through the aperture 26, so that as the finger grip 52 is pressed toward the upper wall [2 of the casing Hi, the cam surface 54, riding upon the wall 12 will rockably support the rod 46 as the same is retated, whereby the projection 46 will contact the upper end of portion 40 to force the post downwardly and the protuberance 44 from the channel 28, thereby separating the head 32 from the member 16. The cam surface 54 binds against the wall l2 during upward movement of the finger gripping portion 52 which prevents accidental swinging movement of the rod 46 during use of the apparatus.

Two types of handles are employed with the present machine. The first type of handle is indicated by the numeral 58 and includes a shank 60 having a bifurcated portion 62 the ends of which are integrally formed with sockets 64 that receive a pair of diametrically opposed lugs 66 on the portion it.

Looking dogs 68 are pivoted within the sockets 64 and springs 10, mounted the sockets 64, urge the dogs 68 against the lugs 66 and thereby retain the lugs 86 between the dogs 68 and abutments t2 internally of the sockets 6 2. The

dogs 86 include finger gripping pieces 14 that are slidably received in slots 16 in the upper walls of the sockets so that the dogs 68 can be moved, against action of the springs 10, to remove the handle 58 from the portion M.

The surfaces of the abutments i2 and the dogs 68 contacting the lugs 65 are concave and the lugs 66 are cylindrical to permit pivotal movement of the handle 52 relative to the portion it with the lugs 66 functioning as pivots.

The second type of handle is indicated by the numeral 18 and includes a pair of arcuate grips 86 that are joined at one of their ends by a cross piece 82 having a depending portion 84 that supports a bolt 86. The bolt 86 is threaded into a boss 88 rising from the casing ID to detachably secure the handle 18 relative to the casing.

The grips 88 terminate in sockets 90 for receiving the lugs 66 and the lugs 56 are held in the sockets 98 when the fastener 86 is threaded into the boss 88.

Obviously, either of the

handles

58 or 18 may be used depending upon whether the user desires to employ the machine with a long lever arm or as a hand gripped brush.

In view of the foregoing description taken in conjunction with the accompanying drawings it is believed that a clear understanding of the construction, operation and advantages of the device will be quite apparent to those skilled in this art. A more detailed description is accordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shown and described a preferred-embodiment of the invention the same is susceptible to certain changes fully comprehended by the spirit of the invention as herein described and the scope of the appended claims.

Having described the invention, what is claimed as new is:

1. A buffing and polishing machine comprising a casing, a rotatable member mounted in the casing and having a central opening, a surface treating head having an upstanding post received in said central opening, means releasably securing the post to the member for rotation of the head with the member, said casing including an upper wall having an aperture receiving the upper end of said post, a support rising from the casing, a horizontal rod rotatably supported by the support and disposed perpendicular to the post, means secured to said rod preventing sliding movement of the rod relative to the support, said rod including an inner end positioned in the support and an outer end projecting outwardly from the support, a first lateral projection on the inner end of said rod extending transversely across the upper end of said post, a second lateral projection on the outer end of said rod including a cam surface contacting the upper wall of said casing, and a finger grip integrally formed with said second lateral projection and manually forced against the upper wall of said casing to rotate said rod and cause said first lateral projection to engage and urge the post downwardly, said cam surface binding against said upper wall of said casing when the finger grip is raised above said upper wall.

2. A bufiing and polishing machine comprising a casing having an open bottom, a rotatable member disposed in the casing and having a central opening, a surface treating head having an upstanding post extending upwardly through the opening, means yieldingly releasably securing the post to the member for rotating of the head with the member, said head having bristles projecting downwardly from the open bottom of said casing, a housing fixed to and extending upwardly from the casing, an electric motor in the housing operatively connected to the member for rotating the member and the head, a switch casing forming a part of the first named casing and extending upwardly from the central portion of said first named casing, a switch in the casing electrically connected to the motor, said switch casing having a pair of spaced walls with registering horizontal apertures therein, a horizontal rod rotatable in said apertures and disposed over the upper end of the post, a stop element carried by the rod engaging the switch casing to restrict sliding of the rod relative to the switch casing, said rod having a lateral projection intermediate its ends adapted to engage and lower the post as the rod is rotated, and a finger grip projecting laterally from the rod and disposed exterior-1y of the switch casing for rotating the rod.

LEE H. BURNI-IAM.

References Cited in the file of this patent UNITED STATES PATENTS France Jan. 29, 1929