US1305733A

US1305733A - Said milieu

Info

Publication number: US1305733A
Authority: US
Publication date: 1919-06-03
Anticipated expiration: 1936-06-03

Description

a. P. MILLER AND 0.1. BREMSER.

BRUSH.

APPLICATION FILED NOV. I2. EN?.

Patented June 3, 1919.`

ROBERT P. MILLER AND CHARLES J. BREMSER, F ST. LOS, MSSOURI; SAID MILLER I ASSIGNOR. T0 SMB BREMSER.

naeaa'aa.

Patented June 3, 19i9.

Application tiled. .'rovember 12, 1917. Serial No. 291,59.

To all whom t mayconoem:

Be it known that weRoBnRfr P. MILLER and CHARLES J. Brin/rena, citizens of the United States, -residingatthe cityY of St. Louis, State of Missouri, have jointly invented a certain new and useful improve-A ment in Brushes, of which the following is a specification, reference being had to the accompanying drawing, forming a part thereof.

This invention relates generally to brushes and, more particularly', to a certain new I simple in its construction, conveniently hanlat indicate like parts throughout the dled, and eficient in operation, and to improve generally upon, and simplify the construction of, brushes'ofthe kind described. With the above and other objects in View, our invention resides in certain novel eatures of form, construction, arrangement, and combination of parts, all as will hereinater be described and afterward pointed out in the claims.

ln the accompanying drawing,

. Figure 1 is a longitudinal sectional View ofan air or' spray brush embodying our in vention; p p

Fig. 2 is a somewhat similar View with the barrel or casing of the brush omitted;

Fig. 3 is a cross sectional view through the brush on approximately the line 3 3, Fia l;

Fig. 4 is a similar view. onvapproximately the line 4 4, Fig. 1;

Fig. 5 is also a slmilar view on approximately the line 5 5, Fig. 1; and

Fig. 6 is an enlarged detail view, partly in side elevation land partly in section, of

thenozzle end of the brush.

Referring now more in detally to the said drawing, in which like reference characters several views, v1 indicates the barrel or Casin vot l' the bush, which is preferably in the crm of an elongated tube of suitable diameter internally threaded at its rear end to receive a centrally apertured end-cap or clo- Sure 2.

Slidably fitting within the rearward part. of barrel or casing 1, is a disk 3 ot suitable thickness, disk 3 being provided with diametrlcally opposite peripheral recesses accommodating correspondingly arrangedl diametrically opposite longitudinally-extendlng parallel guides 4 4 fixed to, and upon the inner surface of, barrel 1, as seen particularly in Fig. 1. Extending longitudinally of barrel land projecting .laterally from the opposite ,side faces of, and 'pref-V erably integral with, disk 3, are alining tubular portions 45 6, disk 3 being formed or provided with a threaded aperture communicating and approximately in alinement with said tubular portions 5 6. Also extending longitudinally of. barrel l with its outer orrear end slidably projecting exteriorly of said barrel through the aperture vin y .end-cap 2, is a stemv or needle-adjusting rod 7 preferably provi-ded lat its outer endwith a head or button 8, stem or rod 7 fitting at its inner or forward end in said aperture of, and having threaded engagement with, the disk 3, as illustrated in Fig. 1. Coiled on stem 7 and interposed between disk 3V and cap 2 with its forward end seated on said tubular portion or extension 5 and itsk rear end seatedon a short tubular extension 9 on cap 2, is a coiled spring 10 for purposes hereinafter appearing.

Extending longitudinally of casing 1 with its rearend sleeved within said tubular eX- tension 6 of the disk 3, 1s a tubular meinb'er or needle-housing 11 having its forward end fitting withinv a cylindrical or port-member 12 adjustably fitting within` casing 1 and longitudinally provided with a bore 13 communicating with, and vpreierably of reduced diameter relatively to, the here ot member 11.

Sleeved upon tubular member 11 interl' mediate the forward end of said disk-extension 6 and the port-member'l2, is a somei what truncate/d cone-shaped or valveaCtu ating member 14 provided or formedwith a collar or annular flange 15 and a short rearwardly rojecting tubular extension 16 adapted Ior engagement with the forward end of said disk-extension 6 for pur oses hereinafter appearing. Coiled on sai disk-extension 6 and interposed between disk 3 andy the valve-actuating member 14 with its forward `end seated preferably upon the extension 16 of member 14, is

1 seen particularly in Fig. 1.

a second coiled spring 17, also for purposes hereinafter appearing.

18 indicates the nozzle of the brush, which is substantially a hollow cone-shaped member having at its apex a flaring outlet or mouth 19 and provided or formed at its base with a tubular extension 2O of reduced external diameter to neatly and conven-` iently fit within the barrel or casing 1, aS

N ozzle-eXtension 20 is internally threaded to detachably engage with a reduced externally threaded extension 21 on the port-member 12. The threads of extension 21 are interrupted by a plurality of ports 22 extending longitudinally of the member 12 and which communicate at their forward ends with the chamber of nozzle 18 and at their rear ends with a space or chamber 23 provided within casing l preferably by externally cutting away or reducing the member 12 intermediate its ends. The space or chamber `23,

ports 22, and thechamber of nozzle 18 form" substantially what l may term or designate the air-chamber or' the brush. Extending longitudinally of the casing 1 and having preferably threaded engagement at its rear end with the reduced extension 21 of member 12, is a tubular member 24 forming substantially an extension of tubular member 11, the bore of member 2d communicating and being approximately in alinement with the bore 13 oi member 12. rllhis member 2l is contracted or somewhat cone-shaped at its forward end, as at 25, and projects normally at its said end into the mouth 19 of nozzle 18 and partially closes the same, there being normally, however, a clearance between the outer wall or portion 25 of member and the inner end of said nozzle-mouth 19, so that the compressed air or other analogous iluid supply furnished to said air cham-ber, in escaping therefrom issues as a blast through said nozzlemouth 19. I

'lhreaded` or otherwise suitably attached to casing or barrel 1, is a bored member or valve-housing 26 adapted for connection at its lower end with an air supply pipe 0r the like 27 leading'to a source of compressed air or other suitable fluid supply, not shown.

The housing 26 is provided with a suitable valve-seat, as at 28, and suitably mounted within the housing 26 toengage the seat 23 and thereby close the bore of member 26 to said source of supply, is a spring-pressed valve 29 having a stem 3G projecting up into barrel or casing 1 in cooperative or actuating position relatively to cone-member 1l, as seen particularly in Fig. 1. Communicating above valve 29 with the bore of housing 26, is a pipe 31 suitably connected by a communicating elbow 32 with the chamber 23 of the barrel or casing 1.

' Also suitably attached to casing or barmomes in member'12,'that part of the bore of tubu-` lar member 1l forward of the stopper 35, together with the'bores of members 12 and 2l, forming or constituting what we may term or designate the paint-chamber of the brush.

Extending longitudinally of the brush and housed within'the members 1l, 12, and 24e, as seen particularly in F ig. 2, is an elongated needle or paintchamber closing member 36 fixed at its rear end to the forward end of stem or rod 7 and normally projecting at its forward or pointed end through the mouth 25 of member 24 and into the mouth 19 of nozzle 18.

Suitably fixed preferably interiorly, and projecting exteriorly, of the casing or barrel 1, as shown particularly in Figy, is a pair of spaced upstanding ears 37, pivotally mounted upon which is a trigger' or brush operating-member 38. rlhis member 33 is' substantially in the form of a bell-crank lever, one leg or member thereof being provided with a nger-engaging piece 39 and the other leg or member thereof being bifurcated or forked to straddle conoidal member 14: and being provided with lugs or the like l() adapted to engage said flange 15 of the member le.

ln use or operation, the parts of our brush .are normally in the respective positions closing the air supply.- 0n finger-piece 39 being depressed, the bifurcat'ed member of lever 38 will be actuated rearwardly, whereupon member 1'41 will correspondingly be actuated rearwardly against the tension of said spring 17. 0n such rearward movement of' the member 14, the valve 29, under the engagement of its stem 30 with the obliqueA or 'beveled tace of member 14, will first be unseated to permit compressed air or other fluid from said source of supply to flow into the air-chamber of the brush, such air finding escape as a continuous blast from the brush through the nozzleoutlet provided between the nozzle-member 18 and the paint-chamber member 24. On the continued rearward movement of the member 14, tubular extension 16 of member 14 will engage' with the forward end of disk-extension G and drive the same rearwardly against the tension of spring 10,

movement rearwardly of the disk-extension 6 and its disk 3 carrying therewith the needle 36 and'thereby opening the nozzleoutlet 25 of the paint-chamber, whereupon under the continuous blast of air issuing from the air-chamber, the paint, pigment or the like supplied to the paint-chamber of the brush will, under the suction or vacuum produced` by the escaping compressed air, be drawn asa spray from the paint-chamber', as indicated/in Fig. 6.y On pressure upon said finger-piece 39 being removed, somewhat or relatively heavy spring 10 will first act to return the needle 36 to its seat, closing the outlet of the paint-chamber, the member 14, in turn, being yieldingly returned to normal position under the tension of spring 17. On member 14 returning to such normal position, air-valve 29 again becomes seated, thereby closing off the airsupply. Thus, in the use of the brush, air is first permitted to flow through the brush in advance of the opening of the paint-chamber and is also permitted to flow through the brush subsequently to cutting off the paint-supply,

whereby the nozzle-mouth 19 is kept clear of paint or the like and blotches in the work, produced by lumps of paint or the like from the brush, prevented. The accumulation of paint in the nozzle of the brush is thus entirely obviated, our brush supplying when in use a uniform, even spray entirely devoid of lumps of paint or the like which might mar the work-being done. rlhe air-outlet from the airchamber of the brush may be regulated by the position of the member 12, as will be evident; `Vadjustment of' member 12 forwardly may be such as to completely close said outlet, which, however, as stated, is normally open, and adjustment of said member rearwardly will increase the size of said outlet as may be desired. By adjustment of stem or rod 7 relatively to disk 3, the time of opening and closing of the paint-chamber of the brush may also be regulated, movement of the stem forwardly or rearwardly relative to they casing or barrel determining the position of the forward end of needle 86 relatively to the mouth 25 of the paintchamber. Normally, however, as before stated, vthe parts of our brush are so adjusted that compressed air or other analogous .fluid flows from the brush not only continuously while the paint-chamber is open, but also both in advance of the opening andr subsequent to the closing of said paint-chamber, for the purpose above described.

A. small screw or the like 41 is preferably threaded through casing 1 and into one of the air-ports 22 of member 12 to hold member 12 from moving rotarily relatively te the casing during the mounting of the nozzle 18 thereupon; and the nozzle' 18 is pref- Ato the ring, the ring 42 will move wholly into the recess in said nozzle-extension, when the nozzle 18 may be rotarily moved relatively to the casing 1 and member 12 for repair or replacement, or for adjustment of the member 12.

We are aware that changes in the form, construction, arrangement, and combination of the several parts of our brush may be made'and substituted for thoseherein shown and described without departing from the nature or principle of our invention.

Having thus described our invention, what we claim and desire to secure by Letters Patent is:

1. AL brush of the class described comprising, in combination, a casing, an air-chamber within the casing having a normally open nozzle-outlet and adapted for communication with a source of compressed yair supply, a spring-pressed valve normally closing communication between the airchamber and its source of supply, a paintchamber within the casing having a nozzleoutlet in proximity to the nozzle-outlet of the air-chamber, a spring-pressed disk mounted for slidable movement in the casing, a needle attached to and movable with the disk and normally closing the outlet of the paint-chamber, and means for actuating the valve and disk to open communication between' the air-chamber and its source of supply and open the outlet of the paintchamber, saidv means including a springpressed conoidal member mounted for slidable movement within the casing and adapted to engage at an end with the disk and. at its sloping .face directly with thev valve, and a depressible trigger pivoted upon the casing for actuating the conoidal member.

2. A brush of the class described comprising, in combination, a casing, an air-chamber within the casing having a normally open nozzle-outlet and adapted for communication with a source of compressed air the paint-chamber, and means for actuating the valve and disk to open communication between the air-chamber and its source of supply and open the outlet of the paintchamber, said means including a stem on the valve, a tubular extension on the disk surrounding the needle, a spring-pressed flanged conoidal member mounted for-slidable movementin the casingand adapted to engage at an end with said extension and at its sloping face directly with said stem, and a trigger pivoted upon the casing and havin a forked extension adapted to engage ghe iange of the conoidal member for actuating the same.

3. A brush of the class described comprising, in combination, a casing, an air-chamber Within the casing having a normally open nozzle-outlet and adapted for communication with a source of compressed air supply, a spring-pressed valve normally closing communication between the airchamber and its source of supply, a stem on the valve, a. spring-pressed conoidal member mounted for slidable movement within the casing and adapted, when actuated, to engage at its sloping face directly with said stem to unseat the valve to open communication between the air-chamber vand its source of supply, and a trigger mounted upon the casing for actuating the conoidal member.

4. A brush of the class described comprising, in combination, a casing, an air-chamber within the casing having a normally open nozzle outlet and adapted for communication with a. source of compressed air member mounted for slidable movement Within the casing and adapted, when actuated, to engage at its sloping face directly with said stem to unseat the valve to open communicationbetween the air-chamber and its source of supply, and a trigger pivoted upon the casing for slidably actuating the conoidal member, the trigger having a forked extension stra-ddling the Conoidal member and adapted for engagement with the flange thereof.

5. A brush oi the class described comprising, in combination, a casing, a. paint-chamber within the casing having a nozzle-outlet, a spring-pressed disk mounted igor slidahle movement in the casing, a tubular extension on the disk disposed longitudinaliy within the casing, a needle-housing within the casing having a portion sleeved within said extension, a needle normally closing the outlet momes of the paint-chamber, the needleliaving attachment to the disk and projecting longitudinally within the housing-and extenslon,

member and adapted for engagement with the flange thereof.

6. A brush of the class described comprising, in combination, a casing, a paintchamber'within the casing lhaving a nozzleoutlet, a needle for opening and closing said outlet, and means for adjusting the position of the needle relatively to the outlet, said means including a disk mounted for slidable movement within the casing and provided with a threaded transverse aperture, and a stem fixed on the needle and having a threaded portion disposed within said aperture for adjustable threaded engagement with the disk.

7. In a brush of the class described, the combination with a casing, a nozle adapted to fit upon the casing, and means including a member mounted for movement within the casing and adapted for adjustable threaded engagement with the nozzle4 for regulating the outlet thereof.

8. In a. brush of the class described, the combination with a casing, a nozzle adapted to it upon the casing, and meansfor regulating the outlet thereof, said means including a cylindrical member mounted for endwise movement within the casing and adapted for adjustable threaded engagement at an end with the nozzle, and any extension projecting from said member into the nozzle.

9. In a brush of the class described, the combination with a casing, of' a nozzle adapted to fit detachably upon the casing, means for regulating the outlet of the nozzle, said means including a cylindrical member mounted for endwise movement within the casing and adapted for adjust-able threaded engagement at an end with the nozzle, and an extension projecting from said member into the nozzle, and means for detachably locking the casing to the nozzle RIDERE l). MILLER. l CHARLES J. BREMSER.