US 1866295 A
Description (OCR text may contain errors)
July -5, 1932.
J. M. CHRISTMAN STRIPING INSTRUMENT Filed Nov. 16 1928 Patented July 5, 1932 y [stares JOHN" M. CHRISTMAN, (3F DETROIT, MICHIGAN, ASSIGNOR TO PACKARD MOTOR CAR COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN scrnirme INSTRUMENT Application filed. November 16, 1928. Serial 1T0. 319,990.
This invention relates to striping'instruments and more particularly to nozzles therefor.
Heretofore, in painting and other kindred arts, striping, ruling and similar operations have been performed with nozzles adapted for applying a fluid or a liquid to the surface to be operated upon. Nozzles employed for such purposes generally have circular discharge orifices and in a few instances elongated discharge orifices. Those of the first type deliver liquid to the surface to be operated upon in a stream substantially circular in cross section, hence the spread of the liquid as it is deposited on the surface is relatively large. Those of the second type deliver the liquid to the surface to be operated upon in the form of a rib or in a stream substantially rectangular in cross section and, accordingly. there is considerably less spread of the liquid so delivered.
Neither of the types of" nozzles referred to provides means for delivering liquid to the surface or surfaces to be operated upon in a form corresponding to thecross section of the discharge end of the nozzle. This is due to the unsatisfactory means of engaging the nozzle with the surface to be operated upon, since in these types of nozzles, the surface is engaged by the outer circumference of the nozzle and this positions the discharge orifices in spaced relation to the surface.
In a few isolated types of nozzles, the dlscharge end of the nozzle is cut obliquely to the axis thereof, hence, the same objections are equally applicable for the means of engagement are identical. In fact, in each of the types enumerated, the angle in which the nozzle is held is a determining factor since the angle of inclination of the nozzle determines the cross sectional contour of the liquid discharged therefrom. It is the aim of thepresent invention to overcome these objections. I
An object of the invention is to provide a nozzle for. a striping instrument adapted to deliver liquid to surfaces in substantially the form of the stripe to be applied.
Another object of the invention is to provide a nozzle for a striping instrument adapted to deliver or discharge liquid in a stream substantially semi-elliptic in cross sectlon.
Another ob ectof the invention is to pro-- vide a nozzle for a striping instrument in which the discharge end of the nozzle coacts with the surface to be striped to apply a stripe having a definite contour.
A further object of the invention is to provide a nozzle for a striping instrument in which the spread of the liquid discharged therefrom is restricted within certain limits.
A further object of the invention is to provide a nozzle for a striping instrument in which the discharge end may be varied within certain limits to increase or decrease the discharge orifice to change the cross sectional area of the stripe.
Yet a further object of the invention is to nozzle for a striping instrument, one in which replacement and repairs may be quickly made. ther objects of the invention will appear from the following description taken in connection with the drawing which forms a part of this specification, and in which:
. Fig. 1 is a side elevation of a striping instrument embodying the invention, parts of the instrument being broken away and parts in section; 1 Y
' Fig. 2 is an enlarged side elevation of the nozzle discharging liquid therefrom, the nozzle being partly in section and partly broken away;
Fig. 3 is a rear elevation of a nozzle with the shank broken away, and T Fig. 4 is an enlarged sectional view substantially on line Jr-4, Fig. 2, illustrating a cross section of a stripe applied to a surface. Referring to the drawing for more specific details ofthe invention, 10 represents the ion employed in lieu thereof and when the instrument is so used the outer face of the roller engages the guide.
The pump 11 has an intake port 16 connected by a passage 17 communicating with a container 18 threaded in the body portion 10. The container is also the handle of the instrument. The outlet 19 of the pump is connected by a passage 20 to a nozzle 21 fitted in a recessin the body 10. The nozzle has a press fit in the recess although it may be otherwise suitably mounted. As shown, the nozzle has a cylindrical shank 22, a tapering body portion 23 and an axial bore 2%. The
free or discharge end of the nozzle is preferably cut normal to the axis thereof as indicated at 25 and also obliquely thereto as at 26.
The nozzle is so positioned in the body of the instrument that in operation the oblique portion engages and bears upon the surface to be operated upon, hence, the portion which is cut normal to the axis is at an angle to the surface. .Accordingly, the discharge orifices will, when the instrument is in correct position, be substantially semi-elliptic as indicated at 27, therefore, paint discharged from the nozzle will be deposited on the surface in a stripe substantially semi-elliptic in cross I section as indicated at 28.
It will, of course, be understood that various other angles or cuts can be made at the discharge end of the nozzle to obtain substantially the same effect. The paramount factors are the angular cuts or faces on the discharge end of the nozzle. It is, however,
to be understood that the oblique cut or face 26 must invariably be such that when the instrument is in operation, the oblique face will be parallel to andflush with the surface to be striped and that the cut or face 25 may be varied to a greater or less degree accord ing to the particular form of stripe desired.
It is apparent that the degree of the cut 25 Although this invention has been described in connection with certain specific embodiments, the principles involved are susceptible of numerous other applications that will readily occur to persons skilled in the art. The invention is, therefore, to be limited only as indicated by the scope of the appended claims.
Having thus described the various features of my invention, what I claim as new and desire to secure by Letters Patent is:
1. In a striping instrument for applying paint to a surface, a rigid circular nozzle having a bore extending axially therethrough, a'portion of the discharge end of the nozzle having a fiat bearing face extending obliquely to the nozzle axis and the remaining portion of the discharge end of the nozzle being normal to the nozzle axis, the
bore being unrestricted and semi-elliptical in form through the normal discharge portion when the oblique portion bears against the surface to be striped.
2. In a striping instrument for applying paint to a surface, a nozzle having a circular bore extending axially therethrough, a portion of the discharge end of the nozzle having a flat bearing face extending obliquely to the axis of the nozzle bore and the remaining portion of the discharge end of the nozzle extending at an angle to the nozzle axis, the bore being unrestricted and semi-circular in form at the discharge end when the oblique face bears against the surface to be striped.
In testimony whereof I affix my signature.
JOHN M. GHR-ISTMAN.
is a controlling factor in the character of the stripe to be applied. If the angle between the cuts 25 and 26 is increased, naturally, the thickness of the stripe is diminished, whereas, when the angle is decreased or made more acute, the thickness of the stripe is increased accordingly. 7
In operation, the container 18 whichis also the handle, is filled with liquid paint and the instrument engaged with a straight edge, or
as shown, with a bead, and drawn over the surface in the direction indicated by the arrow in Fig. 1. As the instrument is drawn over the surface to be striped, liquid paintis drawn from the container 18 by the pump 11 and discharged through the nozzle 21'to the surface to beoperated upon in a stripe of uniform width and thickness throughout and of substantially the same character as shown in Figs. 2 and 4, which is semi elliptic in cross section. Y