US1995142A - Painting instrument - Google Patents

Description

March 19, 1935. E. M. BARDEN I 5,

PAINTING INSTRUMENT Filed July 1671930 EE'E- L EARL Pf. BARQEN Patented Mar. 19, 1%35 11,995,142 v PAINTING INSTRUMENT: I Earl M. Barden, Detroit, Mich; assignor to Packard MotorG'ar Company, Detroit, Mich;', a corporation of Michigan 11 x 16,1930, ScrialNo.i(i8,236

2 Claims. (01. 91-e2.e)

My invention, relates to painting instruments and has particular relation to nozzles for striping instruments. v

v In striping instruments and the like of the type ,5 in which a channeled member or nozzle is employed for distributing paint or other liquid on the work surface, difficulty may be encountered in causing the liquid to begin flowingand to. flow smoothly and to be evenly. distributed. j These 10 of the nozzle which contacts with thework surface, or by reason of the construction-"of the nozzle. i

7 My invention is intended to. obviate or greatly reduce these and other difficulties.

An object of my invention is to provide a device for painting certain selected areas of work surfacefl'.

Another object of my invention is to provide a paint distributingdevicein which flow of the paint starts instantaneously with movement of the instrument.

Another. object of my invention is to provide a means for distributing the paint after it .has reached the work surface and formaintaining a selected thickness'and width of stripe.

Another object of my invention is to provide means whereby wearof .the nozzle at the point where it contacts the work'surfaceis greatly re- $30 duced.

Other objects. of my invention will become apparent in the following description of my device taken in connection with the drawing.

Referring to the drawing in which like figures indicate like parts;

Figure 1 is a side elevational view of a striping instrument utilizing one embodiment of my invention;

Fig. 2 is an enlarged view, partly in elevation and partly in section, of the nozzle shown in Fig. 1;

Fig. 3 is a side elevational view of anotherembodiment of my invention; a

Fig. 4 is a side elevational view of another em- 45 bodiment of my invention;

Fig. 5 is a side elevational view of still another embodiment of my invention; and

Fig. 6 is an end elevational view of the device shown in Fig. 5.

Although my device may be utilized in connection with any device for distributing liquid, it is particularly well adapted for use in connection with a striping instrument such as shown in Fig. 1. The striping instrument includes a body 10 upon which is mounted an upwardly extending container 11.

difiiculties may be caused by. wearof the portion 1 A projection 12 onthe sideof the body constitutes a means for pivotally supporting a nozzle 13 and the nozzle is resiliently engaged with the work surface by means of aspring 14. Suitable channels andrecesses are provided with- 5 in' the container 11,- the body 10, projection; 12 and nozz1e13 in orderthat paint may flow. from the container through the instrument and out the nozzleto the work surface (indicated by the dotted line 15). Theinstrument'may be guided 10 in any suitable mannerbutis preferably guided,

at least in part, by the guide roller 16 extending from the side of the body. a x I The paintis preferably positively fed by means of a gear pump located within the body of the l. instrument. and the pump is adapted to be driven by means of the guide roller 16, whereby movement' 1 of the instrument along a work, surface,

with the guide roller in contact therewith, causes paint to be fed to the nozzle at a rat'eproportionateto the speedof translation of the instrument causing'paint to be delivered to the work surface in'a certain predeterminedvolumeper unit of area:v ,The striping instrument itself constitutes no part of my present invention except .25 in its connection with thevarious nozzles shown, described and claimed. v z

Referring more particularly to Fig. 2, the nozzle 7 preferably is in the form of a lever arm with an enlarged portion at one end thereof through which a transverseopening 21 has been drilled.

.The arm is preferably providedwith a projectingflange or boss, 22fwhich may be utilized in ;providing.a rest or catchfora spring adapted to cause the arm to resiliently engage the work surface. The arm is preferably provided with a longitudinally extending channel or opening 23 and the lower or contact end of the lever is slightly hooked (24) for better engagement of the nozzle with the work surface. The longitudinally extending channel'is'preferably slightly enlarged at the lower end to provide a reservoir 25 to hold a small quantity of paint when the instrument is not being moved and paint has stopped flowing through the channel, in order that when the nozzle again moves over the work surface this small quantity of paint is immediately deposited on the work and the action of capillary attraction and surface tension between the work, the paint on the work and the paint in the channels 21 and i0 23 causes the flow of paint to start instantly.

The materials of the nozzles of the prior art usually were such thatthe contacting portions. thereof wore rapidly thereby quickly destroying the ends of the nozzles and changing the shapes of the passages therein. As a means of obviating this difliculty a pin 26, of wear resistant material such as high carbon steel, is inserted in a suitably prepared opening in the end of the nozzle so that the pin projects downwardly through and beyond the tip in order that it may contact with the work surface. The pin is frictionally engaged in its' -opening; so that its position may be adjusted by tapping it up or down. The. pin is preferably of a hard, long-wearing material.

Since the pin is small and cylindrical and by reason of the abrasive action of the work surface it acquires and maintains a smooth, rounded point particularly suitable for-proper engagement of the nozzle with the work surface. The pin is inexpensive and provides a readily adjustable and replaceable work contacting point. between the nozzle and thework. "In addition,v the pin aids in starting the flow of paint since the paint gathers in the pocket or enlargement in the end so'f the ohan'nel and is 'guided and held .by reason of capillary attractionwi'th the pin. v Another embodiment of r'ny invention is shown in Fig.3 in which the lower end of the ohannel 2'3'b the nozzle 13b is :enlargedand'tapped to pro- 'v'ide a threaded recess 27 into whiehaninverted, 'cone-shaped' tip 28 may be threaded to provide a "work-contacting portion of the nozzle. The tip is drilled longitudinally to provide a channel for "it is more resilient and the paint, an'd'is madeof a hard, long-wearing material so that the channel: is not"readi1y deformed on long continued use' of the instrument. The pin, such as shown in Fig. 2, isomitted as the tipits'el f constitutes the work contacting and paint distributing'imember.

Another-"embodiment of my inventionis :shown ly the same as that showninifiligstl and 2 but the pin requires less adjustment. I *Still another embodiment of. my invention "is shown inFigs; 5-a*n'd-6 in which a'p'lurality of ipins 26d and springs 28d, 'such shown in 'Fig. =4,

'are utilized in side by side relation in a lip -30 iniasuitableinozzle'13d. ZBy usmguarpluralityof surface to be striped.

pins a large opening or pocket is formed in the end of the nozzle, and the pins not only aid in starting the flow of liquid, but also cause the paint to be evenly distributed on the work surface to form a sharply defined line of a certain 5 definite width and of a predeterminedthickness. The line so formed is of the same thickness at the'side as -it is at the center. If desired, a projecting heel 31 may be located 'on the under side of the nozzle so that the heel engages the work surface to more definitely determine the thickness of the stripe. This heel may be detachably engaged'with the nozzle and may be of a hard, wear-resistant material. This nozzle may be used on a curvedsurface as shown or may be used on'a'flat surface without readjustment of the nozzle or the pins.

"Although I have described certain specific embodiments of my invention I do not wish to be limited thereto as modifications may be made bythoseskilled'in the art without departing "from the-spirit and scope of my invention as set forth in the appended claims.

'Whatis claimed is: V

1. vInan instrument for applying stripes, paint E applying meanscomprising a nozzle element (pivotedatone end and free at the other "end, said nozzle having *a ipaint .feeding passage therein 'withthe'ioutletend terminating in its fre'e end andanopenin'g through the free end coinciding 30 with the "outlet end of the passage, anda pin fric- 'tionallytfitted"tightly :in the nozzle opening and,

projecting through the outlet end of the passage to engage and sp'ace the outlet endof-the'passage a predetermined distance from the surface to be 735 striped, said pin being axially adjustable through application of force at eitherend thereoff'to vary the distance of its projection beyond the passage outlet. I

2. In an instrument :forapplyingstripes, paint 40 applying means comprisinganozzle element having an outlet end formed with a paint feeding passage therein and terminating in an enlarged outlet 'opening, said nozzle end having 'a' hole vzforme'd therein and in communication with the outlet opening, and at-pin formed :ofrelatively :hard' material frictio'nally retained in the nozzle -i h'ole and proj ecting' through the outlet opening, saidI-pin "being axially :adjustable' 'by the application of force at either of its ends to regulate the space. between the outlet opening andthe v "EARL' B RDE

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