US3520628A - Paint trim roller and adjustable guide assembly - Google Patents

Description

July 14, 1970 Filed April 15, 1968 F. MOCERI 3,520,628

PAINT TRIM ROLLER AND ADJUSTABLE GUIDE ASSEMBLY 2 Sheets-Sheet l INVENT OR FRANCESCO MOCERI ATTORNEY S F. MOCERI 3,520,628

PAINT TRIM ROLLER AND ADJUSTABLE GUIDE ASSEMBLY July 14, 1970 2 Sheets-Sheet 2 Filed April 15, 1968 mm a M L W J m 7 m m N F INVENTOR FRANCESCO MOCERI ATTORNEYS United States Patent "ice 3,520,628 PAINT TRIM ROLLER AND ADJUSTABLE GUIDE ASSEMBLY Francesco Moceri, 733 Lantz W., Detroit, Mich. 48203 Filed Apr. 15, 1968, Ser. No. 721,389 Int. Cl. B44d 3/28 US. Cl. 401-118 20 Claims ABSTRACT OF THE DISCLOSURE The paint trim roller and adjustable guide assembly includes a handle structure which carries an axle. Both the handle structure and axle structure may be extensible. A roller is rotatably mounted on the axle along with a guide wheel. The roller has an outer paint receiving and transferring surface which is tapered inwardly towards the center of the roller. The guide Wheel also has a tapered surface for guiding the mechanism during use. Adjustable spacing means are provided to position the roller and guide wheel on said axle at predetermined distances apart.

BACKGROUND OF THE INVENTION A common problem in the painting of architectural surfaces is the coating of edge strips or surfaces adjacent to surfaces which are not to be painted. For example, the sash edge surface of a window which is adjacent the window glass must be painted without applying paint to the glass. Similarly, a molding strip along a wall is frequently painted a different color than the wall surface. Therefore, when the molding strip is painted, care must be taken not to apply paint to the wall surface. In the past, painters have utilized a small brush and laboriously hand painted such trim surfaces. Not only is such painting time consuming but frequently the surface which is not desired to be painted is inadvertently coated. The present invention provides a paint trim roller and adjustable guide assembly which permits the painting of such trim surfaces quickly and efficiently without applying paint to the surface which i not to be painted. The assembly incorporates a roller mechanism which may be provided in different sizes to accommodate different widths of surfaces. A guide wheel is provided for guiding the mechanism during the painting operation. The guide wheel does not carry paint. The guide wheel may be adjusted with reference to its distance from the roller so that different size trim mouldings may be painted.

SUMMARY OF THE INVENTION The paint trim roller and adjustable guide assembly comprises a handle structure which carries an axle. A roller is rotatably mounted on the axle. The roller has an outer paint receiving and transferring surface. The guide Wheel is also rotatably mounted on the axle. Adjustable spacing means are provided to position the roller and guide wheel on the axle at predetermined distances apart.

In the drawings FIG. 1 is a view in perspective of a paint trim roller and adjustable guide assembly forming one embodiment of the present invention illustratively shown in use;

FIG. 2 is a view of the forward end of the device of FIG. 1;

FIG. 2 is a plan view of the device of FIG. 1;

FIG. 3 is a plan view of the device of FIG. 1;

FIG. 4 is a view in section taken substantially along the line 4-4 of FIG. 3 looking in the direction of the arrows;

FIG. 5 is a view in section of the roller and adjustable guide assembly of another embodiment of the invention;

3,520,628 Patented July 14, 1970 FIG. 6 is a view in section of an embodiment similar to FIG. 5 illustrating a modification of the roller assembly;

FIG. 7 is an elevational view of another embodiment of the invention;

FIG. 8 is a view in section taken substantially along the line 8-8 of FIG. 7 looking in the direction of the arrows;

FIG. 9 is a view in section taken substantially along the line 9-9 of FIG. 7 looking in the direction of the arrows;

FIG. 10 is a view of the roller and adjustable guide assembly of a further embodiment of the invention; and

FIG. 11 is a view illustrating the method of applying paint to the roller of a device of the present invention.

FIG. 12 is a fragmentary view, partly in section, illustrating a still further embodiment of the invention and including an extension device for use with the paint trim roller and adjustable guide assembly of FIG. 7.

FIG. 13 is a sectional view of a modified roller.

Referring to the embodiment illustrated in FIGS. l-4, it will be noted that the paint trim roller andadjustable guide assembly 10 comprises a handengageable handle 12 from which extends acylindrical rod 14. Thehandle 12 may 'be fabricated of plastic or Wood, while therod 14 may be fabricated of plastic or metal.

Therod 14 has a firststraight portion 16 which extends outwardly from thehandle 12. The rod is bent rightangularly at 18 and a secondstraight portion 20 extends therefrom for a short distance at substantially a right angle to the longitudinal axis of theportion 16. Theportion 20 merges with aU-shaped portion 22 from which extends astraight portion 24 which is directed back towards thehandle 12 and extends for a short distance therebeyond.

Thestraight portion 24 serves as an axle for rotatably mounting a sleeve or bushing 26. Acollar 28 is provided on theaxle 24 adjacent the U-shapedportion 22 to position thebushing 26. It will be noted that thebushing 26 extends from thecollar 28 to substantially the end of theaxle 24. Thebushing 26 is freely rotatable on theaxle 24.

A disk-like guide wheel 30 having a central opening 31 is received on thebushing 26 adjacent to thecollar 28. The guide member is preferably fabricated of wood or plastic. A hub 32 is provided on theguide wheel 30. Aset screw 34 is threadingly received in a threaded opening 36 in the hub and engages the bushing 26 to maintain the guide member in a set position on the bushing. The guide member may be moved to different positions along the bushing by unthreading the set screw 34- and sliding theguide wheel 30 to the desired position on thebushing 26 and then threading theset screw 34 back into engagement with the bushing. Thecentral portion 38 of the forward face of the guide member extending radially outwardly from the central opening 31 is substantially fiat. The outer peripheralmarginal portion 40 is beveled rearwardly. Thereverse face 41 of theguide wheel 30 has substantially the same configuration.

A disk-like roller member 42 having acentral opening 44 is received on the bushing 26 forwardly of theguide wheel 30. Theroller member 42 makes a press fit with the bushing 26 to thereby remain in adjusted position on the bushing. Ascrew 48 is received in a threaded opening in the end of theaxle 24 with awasher 50 being placed between the head of the screw and end of the axle to thereby lock the various elements onto the axle.

It will be noted that the outerperipheral edge 52 of theroller 42 is beveled inwardly towards theguide wheel 30. Theouter edge 52 is covered by a covering 54 of a fabric material suitable for receiving paint and transferring the same to surfaces which it is desired to paint. The covering 54 is preferably a material which has nap or hairs which project radially outwardly. The covering material may be, for example, velvet, felt, woven cloth, pile fabric, carpeting, or the like.

It will be appreciated from the description thus far that either or both of theguide wheel 30 orroller 42 may be removed and replaced with a member of different diameter or thickness to the end that the device may be used on a variety of jobs. For example, rollers of from to 3" may be provided.

Operation of the painttrim assembly 10 may now be understood. Referring to FIG. 1, theassembly 10 is designed to paint an edge surface such as theedge 56 of asash frame 58. It will be noted that theedge 56 extends to the surface of thesash glass 60. It is, of course, not desired to have any paint applied to the glass. Theassembly 10 is first set up for painting the particular sash in question. This involves selecting aroller 42 theedge surface 52 of which is equal to the width of theedge 56 to be painted. This roller is mounted on the assembly. Theguide wheel 30 is then adjusted to a position where the distance between thebeveled portion 40 androller 42 is such thatportion 40 will contact and roll on thesash frame surface 62 with theedge 52 of the roller riding on theedge 56 of the sash frame without having any contact with theglass 60. The bevel of theroller edge 52 angles the roller away from the glass to prevent inadvertent contact of the roller with the glass. Thebeveled portion 40 of theguide wheel 30 provides an even surface for maintaining theroller 42 in the position illustrated in FIG. 1. The physical dimensions of theassembly 10 governs the path and swath ofroller 42 with the result that theedge 56 is entirely coated with paint without any of the paint being applied to theglass 60.

FIG. illustrates a modified paint trim roller andadjustable guide assembly 64. In the FIG. 5 embodiment, a sleeve bushing is not provided for mounting of theguide member 66 androller member 68. In FIG. 5, both theguide member 66 androller member 68 are rotatably mounted on theaxle 70. Theroller member 66 is maintained in the illustrated forward position by means of acollar 72 having aset screw 74 for securement thereof to theaxle 70. Ascrew 76 andwasher 78 are provided on the outer end of theaxle 70 to hold the roller on the axle. The roller member is, of course, free to rotate on theaxle 70.

Theroller member 68 may be replaced with a roller member of greater or less width by removing thescrew 76 and taking theroller member 68 off theaxle 70. If the new roller member is wider, theset screw 74 is unthreaded and thecollar 72 pulled away from the end of the axle. The new roller member is then received on the axle and thescrew 74 again tightened. The reverse procedure is followed if the new roller is narrower.

Theguide member 66, which may be fabricated of wood or other suitable material, comprises a disk-like portion 80 having a beveled outermarginal edge portion 82. Arecess 84 is provided in the forward face of the guide member to receive thecollar 72 and setscrew 74 in the event that it is desired to move the guide member closely adjacent to theroller member 68. Acollar 86 is provided on the rearward side of theguide member 66. Thecollar 86 has a setscrew 88 to engage theaxle 70 and maintain the collar in an adjusted position. Theguide member 66 is free to rotate on theaxle 70. It will be appreciated thatguide member 66 may move longitudinally along theaxle 70 and is not fixed relative to theroller member 68. However, thecollar 86 is adjusted so that when theguide member 66 is at its maximum distance from theroller member 68, the proper distance for the trim job at hand is present. When a paint trim operation is to be performed, theguide member 66 is forced against thecollar 86. The contact of the guide member with the sash frame thereafter maintains theguide member 66 in the proper relationship to theroller member 68.

FIG. 6 illustrates a modification of the FIG. 5 construction. In FIG. 6, theroller member 90 is rotatively received on anaxle 92. Arecess 94 is provided on therearward face 96 of the roller centrally thereof. Acollar 98 having a press fit with theaxle 92 is provided to maintain theroller 90 in the forward position in abutment with awasher 100 held in place by ascrew 102. It will be noted that therecess 94 is of sufiicient diameter to receive thecollar 98. As shown in FIG. 6, thecollar 98 is outside of the recess. However, when the device is to be used, thecollar 98 is forced into the recess to thereby maintain theroller member 90 in the desired position.

FIGS. 7, 8 and 9 illustrate a paint trim roller andadjustable guide assembly 104 having several additional desirable features. Theassembly 104 comprises ahandle 106 from which extends atubular member 108. Arod 110 having astraight portion 112 is telescopingly received in thetubular member 108. Diametrically opposedslots 114, 116 are provided in theoutermost end 118 of thetubular member 108 so that theend 118 may be moved into and out of clamping engagement with therod 110.

It will be noted that theoutermost end 118 is tapered. Ahollow clamping member 120 is slidably received on thestraight portion 112 of therod 110. Thelower end 122 of the clampingmember 120 is open and is received on thetapered end 118 of thetubular member 108. When themember 120 is forced down onto theend 118, the two halves of the end are forced into clamping engagement with therod 110 thus holding the rod in place. When the clampingmember 120 is loosened, thestraight portion 112 of therod 110 may be telescoped into and out of thetubular portion 108 to thereby extend or diminish the overall length of theassembly 104. The worker is thus able to easily adjust the assembly to the desired length to suit the job at hand.

In addition to the variation in overall length of theassembly 104 which may be accomplished by the manipulation of thetelescoping rod 110, ahandle extension 124 is also provided. Thehandle extension 124 comprises a cylindrical member, preferably fabricated of wood, having substantially the same diameter as thehandle 106. The length of thehandle extension 124 may be varied as required. A threadedopening 126 is provided in the lower end of thehandle 106. Thehandle extension 124 is a threadedportion 128 on the end thereof which is threadingly received in theopening 126. When thehandle extension 124 is attached, the overall length of theassembly 104 is increased to thereby permit the worker to paint surfaces which are located well above his normal reach. Thehandle extension 124 may be removed for normal use of the assembly to thereby reduce the clumsiness of handling.

Thestraight portion 112 of therod 110 merges with aportion 130 bent rightly angularly thereto. Theportion 130 merges with aportion 132 which is bent right angularly thereto which in turn merges with aportion 134 bent right angularly thereto back towards thestraight portion 112. Aguide wheel 136 androller 138 are mounted on theportion 134. It will be noted that these elements, as well as the corresponding elements in the other described embodiments, are substantially in line with thestraight portion 112 and handle 106. It is particularly desired to have the roller member in alignment with the handle. This alignment prevents canting of the assembly during use which might be caused if the guide and roller members were positioned on an axle extending laterally from therod 110. Such canting may cause irregularities in the painting operation.

Atubular attachment 140 is provided on therod portion 132 for painting corners and other relatively inaccessible spots. Thetubular attachment 140 may be fabricated of plastic or like material. Aslot 142 is provided in the wall thereof for press-fitting the member onto theportion 132. A plug-like member 144 is received in the upper end of the tubular member. Aportion 146 thereof extends out of thetubular member 140. Themember 144 is fabricated of a fabric-like material capable of receiving and transferring paint. In use, theportion 146 is dipped into paint and then pressed into a corner or other recess in much the manner of a paint dauber.

Referring to FIGS. 7 and 9, it will be noted that the relative positions and configurations of theguide wheel 136 androller 138 are reversed with respect to the previously described embodiments. That is, theguide wheel 136 is placed on the outer end of theaxle portion 134 while theroller 138 is positioned inwardly thereof. Theroller 138 is a disk-like member having a beveled peripheralforward edge portion 148. Ahub 150 extends rearwardly to provide firm seating on theaxle portion 134. Theedge 148 is covered with a fabric material for receiving paint as previously described. Theguide wheel 136 has a beveled outerperipheral edge 152 which is angled downwardly and rearwardly of theaxle portion 134. Theaxle portion 134 has abore 156 extending from the forward end thereof rearwardly towards therod portion 132. Arod 158 is slidably received therewithin. Therod 158 forms an extension of theaxle portion 134 to thereby permit variation in the total length of the axle. Therod 158 has anenlarged head 160 at the outer end thereof which engages awasher 162 and presses this washer into a recess provided in the outer face of theguide wheel 136 to thereby evenly distribute the holding force of thehead 160 across the face of theguide wheel 136.

Acollar 154 is received on theextension rod 158 and has a setscrew 164 for securement to therod 158. Theroller 138 has arecess 166 for reception of thecollar 154. Asecond collar 168 is provided on the rearward side of theroller 138 to position the roller. Thecollar 168 has a setscrew 170 which extends through alongitudinal slot 172 in theaxle portion 134 into engagement with theextension rod 158. Theset screw 170 thus holds therod 158 in adjusted positions against longitudinal movement with respect to theaxle portion 134.

In the adjusted positions of theguide member 136 androller 138 illustrated in FIG. 9, these members are positioned closely adjacent to each other. Awasher 174 is provided to accurately space these members with respect to each other. Various combinations of washers may be used for this purpose to obtain accurate spacing of as little as one-sixteenth of an inch.

As will be appreciated, theextension rod 158 may be slid outwardly from theaxle portion 134 to increase the overall length of the axle, or may be slid inwardly to the position illustrated in FIG. 9 to decrease the overall axle length. When the extension rod is moved outwardly, thecollar 154 may remain in the position shown in FIG. 9 to hold theroller 138 in fixed position or it may be moved outwardly with theguide member 136 to hold the guide member in adjusted position. In either case, the movable member is fixed in place before the assembly is used for painting.

FIG. illustrates anembodiment 175 which in many respects is similar to that of FIG. 7. In FIG. 10, theguide wheel 176 is rotatably received on anaxle portion 178. Theguide wheel 176 has a configuration similar to that of the roller '138 of FIG. 7.

Acollar 180 is provided to maintain theguide wheel 176 in position. Theroller member 182 has a configuration similar to theguide wheel 136 of FIG. 7. It will thus be appreciated that the relative proportions and position of these members may be reversed as desired. Theroller 182 is of increased thickness in order to coat a wider member with paint. It will be noted that the fabric covering 184 of the roller 1182 does not extend entirely to the forward edge 186 of the roller. Asurface 188 forwardly of the covering 184 is left bare. This arrangement results in there being no paint present on thesurface 188 to thereby diminish the possibility of applying paint to surface areas which it is not desired to coat. The width of thesurface 188 may be, for example, about FIG. 11 illustrates the apparatus and manner of applying paint to the roller. In FIG. 11, the paint trim roller and adjustable guide assembly 1175 of FIG. 10 is again illustrated. A box-like member 1190 having inwardly slanting sidewalls 192 is provided as a reservoir for paint. Theupper surface 194 of themember 190 is loaded withpaint 196. The roller 1 82 of the assembly is rolled over one marginal edge portion of the surface 194 t apply paint to the roller. The slantingsides 192 of the member permit the roller to be canted without interference with the sidewalls to thus impregnate the entire roller surface with paint.

The tubular arm orportion 134 of the assembly 104 (-FIG. 7) has an outer end which is threaded as indicated by the numeral 200 in FIG. 12 to form a female element. Anelongated extension rod 202 is provided with a reducedinner end 204 which is threaded and forms a male element which is adapted to be threadedly received within the tubular threaded bore orfemale element 200. Therod 202 may be of any suitable length. As an example, theguide wheel 136 androller 138, shown in phantom in FIG. 12, are adapted to be mounted upon theextension rod 202 and held in assembled relationship as heretofore described by means of a threadedmale element 206 having anenlarged head 208. The threadedelement 206 is received in the threadedfemale bore 210 of theextension rod 202, with thehead 208 retaining the guide and roller in assembled position on theextension rod 202.

The modifiedroller 210 of FIG. 13 may be used in place ofroller 182 shown in FIG. 10. In certain instances it may be both difiicult and expensive to place or provide theannular surface 188 on roller 1182. However, the same objective may be achieved by using awasher 212 having an annular centrally locateddepression 216 which is received within a correspondingdepression 218 in an end wall ofroller 210. A threadedelement 220 extends through thewasher 212 androller 210 to secure same together. This arrangement results in there being no paint present on theannular surface 222 ofwasher 212 to thereby diminish the possibility of applying paint to surface areas which it is not desired to coat.

What I claim as my invention is:

1. A paint trim roller and adjustable guide assembly comprising a handle structure, an axle carried by said handle structure, a roller rotatably mounted on the axle, said roller having an outer paint receiving and transferring surface, a guide wheel rotatably mounted on the axle, and adjustable spacing means to position said roller and guide wheel on said axle at predetermined distances apart, said paint receiving and transferring surface tapering radially inwardly with respect to the center of the roller and said guide wheel having an outer surface tapering radially inwardly with respect to the center of the guide Wheel, said tapering surfaces facing each other.

2. An assembly as defined in claim 1 and further characterized in that said adjustable spacing means comprises at least one collar on said axle for each of the roller and guide wheel, said collars being positionable adjacent the respective roller and guide wheel to restrain longitudinal movement thereof along the axle, each collar including means for securement thereof to the axle to restrain longitudinal movement thereof along the axle.

3. An assembly as defined in claim 2 and further characterized in that one of said collars is positioned between the roller and guide wheel, one of said roller and guide wheel having a recess in the face thereof to receive the collar and permit the roller and guide wheel to be moved closely adjacent to each other.

4. An assembly as defined in claim 3 and further characterized in that said recess is provided in the roller.

5. An assembly as defined in claim 3 and further characterized in that said recess is provided in the guide wheel.

6. An assembly as defined in claim 1 and further characterized in that a U-shaped support is provided at the outer end of the handle .structure, said axle forming the outermost leg of said U-shaped support, the end of said axle terminating at a point beyond the longitudinal center of the handle structure, and one of said roller and guide wheel being mounted on said axle in substantial alignment with the longitudinal center of the handle structure.

7. An assembly as defined in claim 6 and further characterized in that the roller is positioned in substantial alignment with the longitudinal center of the handle structure.

8. A paint roller and adjustable guide assembly comprising a handle structure, an axle carried by said handle structure, a roller rotatably mounted on the axle, said roller having an outer paint receiving and transferring surface, an adjustable guide wheel rotatably mounted on the axle, adjustable positioning means on said axle cooperable with said guide wheel and/ or roller, a U-shaped support at the outer end of the handle structure, said axle forming the outermost leg of said U-shaped support, the

end of said axle terminating at a point beyond the longitudinal center of the handle structure, one of said roller and guide Wheel being mounted on said axle in substantial alignment with the longitudinal center of the handle structure, and a paint dauber mounted on the web of said U-shaped support, said paint dauber including a paint receiving and transferring member for applying a dab of paint in a corner-like portion of a surface to be painted.

9. An assembly as defined in claim 1 and further characterized in the provision of an elongated tubular bushing rotatably mounted on said axle, said roller and guide wheel being received on the bushing.

10. An assembly as defined inclaim 9 and further characterized in that at least one of said roller and guide wheel has a hub, and a set screw in said hub for engagement with the bushing to prevent longitudinal movement thereof.

11. A paint trim roller and adjustable guide assembly comprising a handle structure, an axle carried by said handle structure, a roller rotatably mounted on the axle, said roller having an outer paint receiving and transferring surface, a guide wheel mounted on the axle, adjustable spacing means to position said roller and guide wheel on said axle at predetermined distances apart, an elongated tubular bushing rotatably mounted on said axle, said roller and guide wheel being received on said bushing, at least one of said roller and guide wheel having a press fit with said bushing to inhibit longitudinal movement thereof on the bushing.

12. A paint trim roller and adjustable guide assembly comprising a handle structure, an axle carried by said handle structure, a roller rotatably mounted on the axle, said roller having an outer paint receiving and transferring surface, a guide wheel rotatably mounted on the axle, adjustable spacing means to position said roller and guide Wheel on said axle at predetermined distances apart, said axle including one member fixedly attached to the handle structure, said one member having a longitudinal bore extending inwardly from one end thereof, another elongated axle member telescopically received in said bore, and releasable fastening means to lock the other member against movement with respect to said one axle member whereby the overall length of the axle member may be varied.

13. An assembly as defined inclaim 12 and further characterized in the provision of a collar on said one axle member, said collar including screw means, an elongated slot in said one member for the passage of said screw means into engagement with said other axle member to thereby position one of the roller and guide wheel and fix the axle members against relative movement.

14. An assembly as defined inclaim 12 and further characterized in the provision of a collar on said other axle member for positioning the roller and guide wheel received on said other axle member.

15. An assembly as defined inclaim 14 and further characterized in the provision of a recess in one of the roller and guide wheel to receive said collar to thereby permit the roller and guide wheel to be moved closely adjacent one another.

16. An assembly as defined in claim 15 and further characterized in the provision of a spacer between said collar and one of the roller and guide wheel to accurately space them apart.

17. An assembly as defined in claim 1 and further characterized in that the outer paint receiving and transferring surface of said roller terminates short of one longitudinal end of said roller leaving a space which is non-paint receiving and transferring to prevent inadvertent painting of a surface adjacent to the surface which is to be painted.

18. A paint trim roller and adjustable guide assembly comprising a handle structure, an axle carried by said handle structure, said axle terminating in a free end, a guide wheel rotatably mounted on the axle and positioned inwardly of the free end thereof, said guide wheel having a radially inwardly tapering surface facing the free end of the axle, a roller rotatably mounted on the axle between the guide wheel and the free end of the axle, said roller having an outer paint receiving and transferring surface which is tapered radially inwardly and faces the tapered surface of the guide wheel, and adjustable spacing means to position said roller and said guide wheel on said axle at predetermined distances apart.

19'. The combination comprising a paint trim roller and adjustable guide assembly comprising a handle structure, an axle carried by said handle structure, a roller rotatably mounted on the axle, said roller having an outer paint receiving and transferring surface, said surface being tapered radially inwardly towards the center of the roller, a guide wheel rotatably mounted on the axle, and adjustable spacing means to position said roller and guide wheel on said axle at predetermined distances apart, and a box-like paint retaining mechanism for applying paint to the roller, said paint retaining mechanism having an upper surface forming a paint reservoir, and at least one side wall angled inwardly beneath said upper surface whereby the roller may be rolled over a marginal portion of the surface adjacent the angled side wall without interference of the assembly with the side wall.

20. The combination of claim 19 and further characterized in that each of the side walls of said mechanism are angled inwardly.

References Cited UNITED STATES PATENTS 143,681 10/ 1873 Emery.

724,077 3/ 1903 Bengston 3344 973,534 10/ 1910 Meyerheim. 1,144,569 6/1915 Sylvester 3342 2,644,186 7/ 1953 Guimond. 2,763,022 9/ 1956 Glacken 2,836,840 6/1958 Pratt 15230.11 3,023,443 3/1962 Brandeis 15--230.11 3,229,319 1/1966 Goetz 15230.11 3,380,097 4/1968 Pharris 15230.11

FOREIGN PATENTS 525,941 2/1954 Belgium. 761,772 11/1956 Great Britain.

DANIEL BLUM, Primary Examiner US. Cl. X.R.

40ll93, 48; 15-1l8, 145. 230.11

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