US1878466A - Striping instrument - Google Patents

Description

Sept. 20, 1932- J. M. CHRISTMAN STRIPING INSTRUMENT Filed Nov. 22, 1928 Patented Sept. 20, 1932" V V .UNITEIS STATES JOHN M. cnm'smm, or nnmnorr, MicnIeAN, nssisivon rogrnoxAnn MOTOR CAR. ooivi- PANY, or DETRQIT, MICHIGAN, A conronnrron on rcnrenn sirmrine INSTRUMENT Application filed November a2, 1928. seria No. 321,060. f i

This invention relates to striping instrulfIlOIltS and more particularly to'nozzles thereor. T

An object of the invention'is to'provide'a self cleansing nozzle.

' Another object of the'invention' is to provide a nozzle having means adapted-"to support the discharge end of the nozzle in spaced relation-to the surface to be operated upon.

l and their assembly.

Another object of the invention is to provide a nozzle having'means automatically closing the nozzle upon disengagement with the surface being operated'up'on.

A further object of'the inventio-n'is to Q, provide a nozzle having means positioned therein providing a support for the nozzle when in use and a closure for the nozzle when not in use. V

'A still further object of the invention is to provide a nozzle which is highly efficient in operation-and yet of marked simplicity as a whole and in respect to each of its component parts, so that its'manufacture is economically facilitated'both as regards parts Further ob ects and advantages of the invention reside in thefvarious combinations hereinafter described and claimed as will be apparent upon reference to the following specifications and I to the drawing, in which:

Fig. 1 is a vertical sectional viewof a strip ing instrument embodying the invention, the container being shown inelevation and partly broken away;

tained Fig. 2 is-a cross sectional view taken substantially on line 22, Fig. 1;

" Fig. 8 is a vertical sectional view nozzle with the needle in the position mainduring operation of the instrument, and I I Fig. 4: is a vertical sectional viewof the nozzle with the needle in the position in whichthe nozzle is closed.

' Referring to the drawing for more specific details of the invention, 10 represents the body of theinst rument. As shown, thebody ,comprisesa hollow cylindrical member closed at one end and open at the'other end. A

,-container 11, which is also the handle of the instrument, is threaded in thejclosed end-and portionof the disk.

of the 13. A sleeve 14 having a double diameter bore 15-.and a flange 16 011* one end thereof is supported by the sleeve 12, the-lower face key being securedin position by a split ring Resting on the fflanged end of the sleeve 1 1 within the sleeve 12 i-s a disk 24 secured against rotation by a pin 25 and positioned in this ,disk'is a pump-26, one gear of which is suitably secured on the hollow shaft 17.

Resting on the disk '24 isa disk 27 also secured against rotation by the pin '25. This disk has positioned therein a passage 28 communicating with the intake of the pump, and also a passage 29 which establishes communication between the'outlet'of the pump and.

the recess 30 formed by bevelingthe upper Fitted in the hollow shaft is bore 33 extending through'the wall thereof,

a-tapering point 34 and an enlarged'head 35 provided with a circumferential'flange 36.

The enlarged head'35 fits snugly in theaxial 'bore in the disk27 with the. 'radialbore 33 'therein communicating withthje recess 30 and the flange 36 rests againstthe top of thedi'sk 'overthe recess. Aplate 37 having a pluralityoft-apertures 38 is interposed between the the body 10. r r V The point or discharge end of the noz'zleis slightly contracted or restricted as at 39 and positioned in the axial bore or passage of the nozzle is a floating member 40 in the form of a needle having a reduced end portion 41 proafnozzle 31- 'having an axial bore or passage 32, a radlal the open end externally screw threaded to I receive a sleeve 12 having an inturned flange betweent'he sha-ft andl-the sleeve, and the shaft is retained in the sleeve by a key 22 fitted in'--aslo t in thewall thereof and eX- tending between the flanges 19 and 2 0, the 55 viding a shoulder 42 and a point The neeengagement of the shoulder 42 withthe nozzle bore and being limited in the. other direction thus be seen that the nozzle 1s unattached-and freely floating.

When in operation, the buttendof the needle is seated upon the disk 37, as shown ed to prevent injury tothe surface Operated upon,-isretracted inthe passage of; the'nozzle so that the shoulder a2 is, disengaged from the contracted portion ofthe passage, thus fluid or liquid entering the;passage in the nozzle can be readily discharged'theref rom to the surface of the work operated upon at thepoint of the needleo 7 Upon disengaging the point 43 from the surface operated upon, the needle as a result of gravity assisted by pressure in the-passage, drops tothe position, shown in Fig. 4 and seatsthe shoulder 42 in the restricted portion 39, thus effectively closing-the passage 32. The needle 40 has a relativelysmall diameter and is therefore exceedingly sensitive andpliable and by reasonof this, structure, smoothness in operation is, assured.-

In, operation, assuming that the container has been filled withafluid or liquid, the instrument is. engaged with the, work to. be operated upon, in whichhposition; the needle 40 is seated on the plate 37 and the guide roller 18, is engaged with a straightedgeuor .pattern, as the case may be, and moved over -the surface to be operated upon. As the instrument is moved, the roller .18 is rotated to drive the shaft 17 Which operates the pump 26 and as the pump is set in operation, fluid or liquid is drawn from the container through the passage 28 and delivered through the pas- .sage 29,.recess 30 and radial bore'33 tothe passage'in thenoz'zlefroni whence it is discharged through the restricted portion 39 to the point of the needle.

Thedischarge'end of the nozzle is maintained in spaced relation to the surface oper-' .ated upon by theneedlelQ and'the needle is sufficiently flexible toprovide smooth manipulation of the instrument. The needle also automatically closes the passage in the nozzle when, disengaged from thesurface oper- ,ated upon andby reason ofits reciprocatory movement in engaging and disengaging the surface operated upon and-slight vibrations arising in. the manipulation of the, instrument, the passage is thoroughly cleansed. 7 While one illustrated embodiment has been described, it is notmyintention to'limit the by engagement with the plate 37", and it will in Fig. 3, and the reducedportion 41 'offthe" needle,the point 4.3 of which isslightly roun l+ 1 against thework.

tion,

.reduced end portion forming a shoulder adapted to wedge in the restricted tapering portion'ofthe passage when in its extended position, the reducedportion of the needle having a rounded point adapted to project beyond the passage, and engage 1 a surface to eop ate p -fv a v 1 1' a 2. In a striping instrument, a nozzle having a fluid inlet andoutleflafiexible needle adapted to reciprocate in; thenozzle, said needle having a reduced end po1tion provided with a point and means retaining the nozzle in position providing an abutmentfor the needle when the instrument isin opera- 3. Ina stripinginstrument, a nozzle having an inlet passage and adischarge passage provided with arestricted portion, afloating needle; in the discharge passage, said needle having a reduced end portion providing a ,shoulder adapted to seat in and close the restricted portion when the instrument is released from the work and means retaining the nozzle in position providing an abutment for positivelylimiting inward movement of the needle when the instrument is pressed 4. 111 a :pressure striping instrument, a nozzle having a headportion and a'tapering endportion, said nozzle having an inlet passage and a taper-ing discharge passage providing a restricted portion, a flexible needle positioned in the discharge passage having a reduced end :portion provided with a point,

;a shoulder formed byxtlie reduced end por- .tion of the needle responsive to fluid pressure to seat in and closethe restricted portion of o the discharge passage when the nozzle is not in operation and means for retainingthe. nozzle in position providing a support for the needle when the instrumentis in opera- 5. In a striping instrument, a nozzle having a fluid inlet and outlet, a valve member adapted to reciprocate in the nozzle and thereby control fluid fiowtherethrdugh, said vniember having a bearing end projectingbeyond the outlet portion ofthe nozzle, gand vmeansassociated the'nozzle in a relatlon forming an abutment for the valve menr her to limit the inward movement thereof when pressed 'againstasurfaceto bestriped.

6. In a striping instrumenflarigid tubular nozzle having a fluid feeding bore therein tapering toward the outlet end, a cylindrical 13a valve member reeiprocably mounted in the bore and adapted to engage With the tapered Wall of the bore to shut off fluid fiow, sa-id member having a bearing end of reduced diameter projecting beyond the outlet end of the nozzle bore, and abutment means associ ated with the nozzle and engargeable by the inner end of the valve memberto positively limit the inward movement thereof Whenthe bearing end is pressed against a surface to be striped. I

In testimony whereof I a-flix my signature.

JOHN CHRISTMAN.

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