US653292A - Apparatus for spraying paint. - Google Patents

Description

No. 653,292. y Patented luly lo, |900. A. FISHER.

APPARATUS FOR SPRAYING PAINT.

(Application filed Apr. 9, 1898.) (No Model.) 2 Sheets-Sheet l.

"mv 'Muir N.. .N i@ e fw No. 653,292. Patented I uly l0, |900.

l A. FISHER.

APPARATUS FDR SPRAYING PAINT.

(Application led Apr. 9, 1898.)

(No Model.) 2 Sheets-Sheet 2.

QVv-Wfy NITED STMES PATENT OEEicE.

ABEL FISHER, OF VVELLSVILLE, OHIO.

`APPARATUS FOR lSPRAYING PAINT.

SPECIFICATION forming part of Letters Patent N o. 653,292, dated July 10, 1900.

l Application filed April 9, 1898. Serial No. 676,974. (No model.)

To all whom it may concern:

Beit known that I, ABEL FISHER, a citizen of the United States of America, residing in Wellsville, in the count-y of Columbiana, in the State of Ohio, have invented certain new and useful Improvements in Spraying Apparatus, of which the followingis a true and exact description, reference being had to the accompanying drawings, which form a part thereof.

My invention relates to the construction of apparatus for applying paint in the form of a spray, such in general character as that described in my former patents, No. 584,864, of June 22, 1897, and No. 593,013, of November 2, 1897, my invention being, in fact, animprovement upon my apparatus as described and shown in the said patents, and my object being, in the iirst place, to provide an improved construction of the spraying-head; in the second place, a better and simpler device foroperating the valves, the admission of air and paint to the spraying-head, and, finally, the improvement of various details of construction.

The nature of my improvements will be best understood as described in connection with the drawings in which they are illustrated, and in which- Figure l is a sectional side elevation of my improved paint-sprayin g apparatus, taken on the section-line l l of Fig.y 3; Fig. 2 is a rear end elevation of the device; Fig. 3, a plan view thereof; Fig. 4., a side view of the spraying-head; Fig. 5, a section through the head taken as on the line 2 2 of Fig. 4t; Fig. 6, a section through the head taken as on the line 3 3 of Fig. 4. Fig. 7 is a perspective view showing the inside of one of the caps used in forming the spraying-head, and Fig. 8 is a perspective view of the spraying-head with one cap removed.

A indicates the fixed handle of the device, iianged at top, as indicated at "A, and secured in any convenient way to the lower part of the paint-chamber B, which, as shown, is formed in a casting open at the top, and in which casting are also preferably formed, as

shown,ivarious other passages and chambers, which may be described as follows:

B' is a tubular extension from the paintchamber B, through which the'paint is intro= duced thereto, preferably by means of a flexible pipe C, clamped at its end, as indicated at C', C2 indicating a pipe screwing into the tubular section B on the inside of the paintbox and having at its inner end an oblique valve-seat C3, as indicated. B2 is another tubular extension of the casting, opening at one end into the paint-chamber, and at the other end broadening out, first, into a packingchamber b2 and thenl into an air-chamber B3, from which extends a tubular section B4. The air-chamber B3 connects also through a valve-seated passage b3 with a second airchamber B5, from which extends the tubular section B7, to which the iiexible air-supply pipe K is secured, as by a clamp K', and also the tubular opening B6, formed opposite to the valve-seat b3, to provide means for inserting and removing the valve, the said valve being indicated at L and provided with a valve-stem L', which extends through the tubular opening BG and around which are placed the washer L2, abutting against a shoulder in the passage, and the screw-plug L3, between which and the washer L2 packing is clamped to make a tight joint around the valve-stem.

L4 indicates a pin or pins on the outer end of the valve-stem L.

D is a cap iitting'on the open end of the paint-box B, and between which and the top edge of the said paint-box is clamped the flexible diaphragm E, having a perforation at its center. The cap or top piece D is preferably formed, as shown, with a tubular central projection D', closed by a screiiv-plug D2, conveniently operated by a thumb-'wheel D3, and perforated, as indicated at d2, for the passage of the valve-stem F. The said valvestem is secured to the diaphragm E, through which it passes, bya flange F3, resting against the under side of the diaphragm, and nuts, as indicated at F2, screwing ony the valve-stem and by which the diaphragm is `clamped against the iiange F3. Below the diaphragm the valve-stem is continued at an angle, as indica-ted at f, and holds a valve F, which iits against the valve-seat C3, and to keep it in alinement some guiding device should be provided-such, for instance, as a slotted end,

(indicated at f,) in the slotted portion of which lies a projection, as b.

Gindicates a spring resting against the IOO adjustable plug D2 at its upper end and against the nuts F2 at its lower end and by means of which the pressure in the chamber B is regulated, the valve F being, as in my former constructions, a regulating-valve by which the supply of paint to the chamber Bis cut oft when the pressure in said chamber exceeds a determined amount.

H H3 indicate the paint-supply pipe leading from the chamber B to the spraying-head. The portion H of this tube is formed to fit in the tubular extension B2 and is provided at its end projecting into the chamber with a valve-seat, as indicated at H', and at the other end of the tube-section B2 with a flange H2, fitting in the packing-chamber b2.

I is a valve adapted to close the connection between the chamber B and the pipe H when it rests on the valve-seat H. As shown, it is made of a yielding material, such as leather, secured in a cup-shaped cavity in the end of a valve-rod I', which extends through a packing-chamber at the rear of chamber B, closed by a screw-plug I2, and has its ou ter end threaded, as indicated at I4, so that a nut I5 will screw upon it and serve to connect it with an arm J, from which arm a right-angled extension J extends through a guiding-bearing A2 in the grip A. A spring G serves to hold the valve I normally seated on the valveseat H'.

M3 is a movable grip-lever secured to the stationary grip A through a spring G2 and having formed with or secured upon its upper end two plates, one of which at M is slotted, as indicated at M', to engage the pins L4 of the valve-stem L' and having a cross-bar M2, arrangedvin position to impinge against the end of the rod J' when the grip-lever is actuated.

m' indicates a recess or tooth formed on the under side'of the paint-box or its extension B2 and adapted to engage a toe mat the extreme upper end of the plate M when the grip-lever is drawn back toward the fixed grip, the engagement being of such a character as to partly, but not wholly, overcome the tendency of the spring G2 to return the parts to the position shown in Fig. 1.

N is the air-tube leading to the sprayinghead, and it is formed with a flange N', fit` ting in the tubular extension B4 and between which and the fiange N' packing material is inserted.

N5 is an annular screw-plug screwing in the end of the tubular extension B4 and provided with a thumb-wheel n2, and M4 is a jam-nut screwing on that portion of the plug N3 which lies outside of the tubular extension B4, the

arrangement being such as to form a tightA joint around the air-tube N, While permitting the said tube and the head attached to it to turn freely, and in the particular construci tion shown, as the tubes N and H3 are both secured to the center O of the spraying-head, the plug N3 also serves to set the flange H201:` the paint-tube u p against the packing mate rial, which makes a tight joint between the tube B2 and the air-chamber The head or spraying-nozzle of the apparatus is made up of three parts-one the center O and the caps P P. The said center O is preferably made, as sl1own,with two conical ends (indicated at O10 O10) separated by a narlto which it is secured and which perforation connects by a port O7 with a flared port O8, opening through the center O4, as indicated, and preferably flanked on each end by projections O5 O5.

P P are caps fitting over the conical ends of the center, with their edges forming tight joints, yas indicated at P4, with the outer portion of the caps, the caps being preferably secured in nuts P', through which the studs O9 extend, clamping-nuts Q screwing on the outside of the studs. The caps are of course recessed, as indicated at P2, (see Fig. 7,) to extend around the pipe N, and they are'provided, in addition to theirjoint-forming edges P4, with joint-forming webs P3 and Iianges P5 P5, whiclrfit against the conical face O10, over which the caps rest, and form the chambers R and R', the purpose ot the flanges P5, which divide these chambers from each other, being to insure a movement of the air first from the center in passing through and from the chambers R', which open through ports P6 on each side of' the port O2, as indicated after Figs. 1 and 4t, the two air-jets converging on each other over the face of the port O3.

In operation the paintchamber B is kept supplied with paint ata determined pressure, as described in my formerpatents, and flexible pipe L is connected with some source of air under pressure. When the operator desires to throw a jet of paint in the form of spray from the head, he grasps the fixed and movable grip-levers A and M2 and draws the movable lever inward, thus by means of the enga-gement of the slots M' and pins L4 drawing the valve-stem L' outward and opening the valve L, permitting the compressed air to enter the air-chamber B2, from which it passes through the tube N and the passages O2 and O3 into the chambers R and thence through the chambers R' out ot' the converging air-nozzles PG P6. Continuing the inward movement of the grip-lever, the operator brings the plate M2 into contact with the end of the rod J', forcing it backward, and through its arm .I and the valve-stem I', opening the valve I, permitting the paint to iiow from the chamber B through the paint-tube H H3 and the port O7 in-to the flared port O2, the paint emerg- IOO IIC

of the paint at the edges of the flared port.

When the backward movement of the griplever M3 reaches the normal operative position, the toes m of the plates IVI pass into and are engaged by the notch or recess m, which has the eect of greatly relieving the power necessary to hold the grip-lever in operative position, while at the same time the engagement is not sufciently rigid to entirely overcome the tendency of the spring G2 to return the movable grip-lever to its normal position.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. A spraying-head having in combination the center O formed with conical ends O10 O10, a fluid-port as O7 OS opening from its center and air-ports as O2 O3 opening through its conical sides and the caps P P adapted to fit over the conical ends of the center O and form air-chambers as R having ports as P opening on the edge of the air-port O2.

2. A spraying-head having in combination the center O formed with conical ends O10 O10, a fluid-port, as O7 O8, opening from its center, outwardly-extending end walls O5 O5 at each end of the fluid-port, and air-ports as O2 O3 opening through its conical sides and the caps P P adapted to tit over the conical ends of the center 0 and form air-chambers as R having ports as P6 opening on the edge of the air-port O3.

3. A spraying-head having in combination the center O formed with conical ends 010010, a fluid-port, as O7 OS, opening from its center, and air-ports as O2 O3 opening through its conical sides, and the caps P P adapted to lit over the conical ends of the center O and formed with partitions P5 P5 whereby airchambers R R are formed on each side of the center the outer chambers R having ports as PG opening on the edge of the fluid-port O2.

4. A spraying-head having in combination the center O formed with conical ends O10 O10, a fluid-port, as O7 O8, opening from its center, outwardly-extending end walls O5 O5 at each end of the fluid-port, and air-ports as O2 O3 opening throughits conical sides andthe caps P P adapted tofit over the conical ends of the center O and formed with partitions P5 P5 whereby air-chambers R R' are formed on each side of the center the outer chambers Rhaving ports as P6 opening on the edge of the Huidport O2.

5. A spraying-head having in combination the center O formed with conical ends O10 O10, a fluid-port as 07,08 opening from its center, air-ports as O2 O8 opening through its conical side and threaded studs O9 O9 extending from the ends of the conical ends and the caps P P adapted to fit over the studs and the conical ends of the center O and form air-chambers as R having ports as P6 opening on the edge of the air-port O3.

6. In a painting-nozzle the paint-chamber B and air-chamber B3 connected by a tube B2 and said air-chamber connected with a thread- Y ed tubular section B4 in combination with a yspraying-head, an air-tube N secured to the head and having a flange N fitting in the tubular section B4, a paint-tube H H3 also secured to the head, extending through the tube N, chamber B2 and tube B2 into the paintchamber, a packing-flange as H2 secured on the paint-tube and adapted to make a tight joint between the chamber B3 and tube B2 anda threaded packing-annulus as N3 n3 fitting on tube N and screwing in the tube B4 so as to hold packing between its end and the ilan ge N of tube N.

7 In apainting-nozzle, substantially as described, the combination of valves L and I for regulating the admission of air and paint into the tubes leading to the head with a spring-supported grip-lever Md normally resting in position to permit the valves to remain closed, valve-actuating devices arranged to be acted on by the lever IVI3 when it is moved and wherebyv the valves L and I are successivel y opened, and a detent as m arranged to engage and partially hold the grip-lever when moved to its normal valve-opening position.

ABEL msi-mn.

Witnesses:

JNO. W. RILEY, J..L. JUNKIN.,

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