US797241A - Pneumatic renovator. - Google Patents

Description

,241. PAHTMJTED AUG, Hh MWI J., S THURIVINL PNEUMAT'U RENOVATR, .aPPLUMIoN Hmm mam, 1904.

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No, 'm7, .71.

J'. THRMAN.. PNEUMAT RENOVATR.

APPLICATION FILED MAR. 24:, 1901.1.

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WNEtliNlrlTlG HENVATOH.

Specification of Letters Patent.

Patented Aug. 15, 1905.

Application filed March 241, 1904. Serial No. 199,760.

To (LU, whom, it nbwy/ concern,.-

Be it known that l, JOHN 5. THURMAN, a citizen of the llnited States, residing at the city ot St. Louis, in the State of ltlissouri, have invented a certain new and useful Pneumatic lenovator, of which the following is such a full, clear, and exact descriptiol'i as will enable any one skilled in the art to which it appertains to make and use the same, reference being had to the accomlmnying drawings, forming part of this specification.

lly invention relates to pneumaticI renovators, and more particularly to that class ol renovators consisting of a casing provided with an inlet in the bottom in combination with a blast-nozzle adapted to discharge a jet of air into or through the article to be cleaned and thence into said opening.

My invention consists in various novel features and details oi' construction, all of which are described in the following specification and pointed out in the claims aliixed hereto.

In the accompanying drawings, which illustrate two terms of renovator .made in aecord ance with my invention, Figure 1 is a vertical central section. l 1 ig. 2 is a section on the line 2 2 of Fig. 1. Fig. 3 is an enlarged section of the hand-grip- Fig. 4 is a sectional view showing the manner of forming one of the blast-nozzles. Figy is a side elevation, on a reduced scale, showing the complete renovator with the bag attached. liig. (l is a top plan view oi the parts shown in Fig. 5, the dust-chamber and bag being removed.

Fig. 7 is a section on the line 7 T oli` Fig. 3. Fig. e is a section on the line t; t4 ol Fig. il. Fig.. E) is-partly a section and partly a side elevation oi" a moditied 'lorm of' renovator, and Fig. 1t) is a section on the line 10 1() oi lFig. 9.

Like marks of reference refer to similar parts in the several views of the drawings.

lte'l'erring 'lirst to Figs. l to 7, inclusive, which illustrate a iorm of renovator more particularly adapted for renovating carpets, 15 is the casing or body oi the renovator. The bottom of the casing .15 is adapted to rest Aupon the carpet or other article to be' cleaned, and saidbottom is provided with a pair of mlet-openmgs 1G. Adjacent to the inlet-openings 1G are the blast-nozzles 17.

These nozzles are adapted to discharge com-` pressed air at an angle to the lower 'lace of the renovator and' into and through the care petor other article to be renovated and thenceV up `through the. inlet 16 to the interior of the casing 15. The blast-nozzles 17 are partly formed by a wall or partition 12%, extending across the casing 15, and partly by a removable block or casting 19, which is secured to this wall or partition 18,' as shown in Figs. 1 and 2. In each of the blastnozzles 17, adjacent to the outlet thereof and in the air-passage, are a number of spreading-posts 20. (Best sl1owninFig4.) These spreading posts 20 are cuneate 1n form and have their apices alternately disposed toward the inlet and the outlet of the nozzle, as shown .in this figure, so as to thoroughly distribute the air along the nozzle 17, and thus secure uniform pressure throughout the length ofthe nozzle. rllhe block or casting 19 is secured to the casing 15 by means of bolts or screws 70. In order to separate the blockslightly Jfrom the partition 18, against which it rests, I interposc between the said parts athin strip 71 of paper or other similar material, and thus regulate the size of the mouths 17 .of theblastnozzle. The admission of air to one or the other of the nozzles 17 is controlled by means Thls valve is preterably surrounded by a bushing 22, 1n which of a cylindrical valve 21.

the said valve works; The bushing .22 is providedwith passages 23,communicating with the nozzles 17, and also with passages 2e/t, communicating with a cross-passage 25. The ends of this passage 25 extend along the ends oli the renovator and connect with a common inlet 26, to which is secured `one end oi a short llexible'. tube 27. Adjacent to the flexible tube 27 is a second ilexible tube 22%, which leads to an internal blast nozzle or jet L29, Fig.' 1., which is centrallylocated in a short dischargdpipe 30, threaded in and extending upwardly a short distance from the out-let of the casing 15. The ends of the valve 21 are provided with armsBZ, to which are pivoted the biturca'ted ends 33 of the handle. ,The movement of the arms 32 is limited by lugs Sli, arranged at one or both ends of the casing 15. ltlxtending from the bilurcated ends 3? ot the handle are a. pairof pipes 215 and 3G, respectively, which form the shaft ol" the ham die. The pipe 35 is connected to the flexible tube 27, hereinbel'ore described, and the pipe Siti is connected to the? llexible tube 2&5. Se cured to the ends of the pipes 51.3 and Bois the grip 117,1iorming the upper end ot the handle.y Secured to the lower en'd olfV the grip 37 is allexible pipe 3H, whiclrsupplies the compressed air to the renovator. rlhis pipeltl opens into a chamber 159, provided with `two outlets.

'lhese outlets are normally closed by means of valves 4() and 41, respectively, Fig. 7. Leading from the valve 40 to the end ofthe pipe is a passage 42, and leading from the valve 41 to the end of the pipe 36 is a passage The valve is controlled bv a fingerpiece 44, arranged at the back of the grip 37. The linger-piece 44 is pivoted to the grip at 47 and bears upon the end of the stem of the valve 4t), so as to operate the said valve against the pressure of the spring 46. The

valve 41 is controlled by a similar fingen piece in the loop of the grip 37. The finger-piece 45 is pivoted at 46 and bears against the end of the stem of the valve 41, so as to operate said valve against the spring 46. is the dust-collecting chamber, which is preferably cylindrical in form and preferably made of sheet metal. an opening in its bottom of substantially the same diameter as the short pipe 33t), extending upwardly from the casing 15, and secured to the upper face of the bottom is a short tube 51, adapted to fit the said pipe 30. or tube 51 is also provided with an extension 52, threaded into its upper end. The extension 52 is closed at its u )per end by means of a globular valve 53. This valve is prevent-ed from dis lacement by means of a wire cage 54, whic Yis preferably made separable from the tube or pipe 52. The tube or pipe 52 nts against the end of the discharge-pipe 30, as clearly shown in Fig. 1, so as to make a flush joint with it, and thus allow no place for the escape or lodgment of dust. The upper edge of the dust-chamber is provided with a turned-over edge or roll 55, by means of which the bag 56, of cloth or other foraminous material, is secured in place. In order to hold the bag distendcd, the chamber 5() is provided with a. clamping device 57, in which is secured a rod 5S, corresponding to the contour of the bag and to which the bag is secured at several points, as shown in Fig. 5. Owing to the construction above described, the dustchamber 50, together with the bag 56, can be lifted off of the renovator when they become dirty and replaced by a clean dust-chamber and bag, as the parts simply slip over the short discharge pipe or tube 30.

In Figs. S and 9 I have shown a modified form of my apparatus which is especially adapted for cleaning furniture. In this device in place of the casing 15 I use a casing 60, having but a single inlet-opening in its bottom. 61 is the blast-nozzle, which discharges the air into and through the material to be cleaned and thence into the opening 62 in the bottom of the casing 60. In this form of apparatus the casing is not provided with a dust-chamber or dust-collecting bag, but the air passes out through a pipe 64,- which in turn conm'lunicates with a flexible pipe 65, leading either to a stationary dustcollector (not sho-wn) or to any suitable The chamber 50 has The pipe place where the dust is to be discharged.

The grip 37 is the same as that previously :described in connection with the form of i renovator shown in Figs. 1 and 6 and need not be again particularly described. The pipe 35 of the -handle leads to the blast-nozzle 61 through a passage 72, formed in the, g casing 60. The pipe 36 leads to the internal l nozzle or jet 63 through a passage 73, formed l. in the casing 60. The nozzle 61 s formed E partly by the rear wall ofthe casing and l partly by a removable portion 74, secured l against the said rear wall by means of screws or bolts 75. These screws or bolts pass I through spreading-posts 76, formed in the passage of the nozzle 61. The spreadingposts 76 are similar to the spreading-posts 20, hereinbefore described.

In the operation of my renovator the casing 15 is moved over the carpet or other article to be cleaned in either direction by means of the grip 37. When the renovator is moved f forward, the action of the bifurcated ends 33 on the arms 32 moves the valve 21 in osition to discharge through the forward b astnozzle 17, the movement of the arms being limited by the stops 34. When the casing is moved backward, the arms are thrust against the opposite stops 34, so as to throw the valve in position to discharge through one or the other nozzle, so that it always issues in the direction in which the renovator is traveling. Bymeans of the finger-pieces 44 and 45 a erfect control is had over the admission o air to both the blast-nozzle and the internal nozzle or jet 29. The action of the compressed air rebounding from the surface to be cleaned forces the air up through the outlet- pipes 30 and 52 to the dust-collecting chamber 50. This action can also be increased by admitting air through the internal nozzle or jet 29 by means of the tingerpiece 45. Once the chamber 50 becomes filled with dust or the foraminous bag becomes clogged the chamber and bag can be together removed from the renovator, as hereinbefore described, and a new chamber and bag substituted.

The operation of the renovatior shown in Figs. 8 and 9 is similar to that above described except that the renovator is intended to always be moved in a forward direction. The valves in the grip 37 give perfect control over the admission of air both to the blastnozzle and to the internal jet.

Having fully described my invention,what I claim as new, and desire to secure by Letters Patent of the United States, is-

1. In a pneumatic renovator, the'combination with a casing, of a blast-nozzle, a removable dust-chamber carried by said casing and rovided with' an opening in its. bottom for tfie dust-laden air from said casing, and means for reventing the return of the dustladen air rom said dust-chamber to said casing.

2. ln a, neuniatie renovetor, the eombi nation witlli a Gesine, of e blast-nozzle, a 1e movable dust-cham e1' eai'iied by said casing and provided with an opening in its bottom foi' the dust-1aden air from seid casing, a eonduit carried by said dust-chamber and eX- tendingr upwardly from seid opening, and a valve for closing said conduit.

ln a Pneumatic renovator, the combi nation wit 1 a Casing provided with s blastnozzle, of' a tube carried by said casing, a dust-Chamber slidingly mounted on said tube, .and a. valve for Controlling the communica lion between said tube and dust-chamber.

4. ln a meumatie renovatol-, the combination witli a easing provided with e blastnozzle, of a tube eerried by said easing, e dust-elmmbel slidinglyinounted on seid tube,

and e Valve foi' controlling the communicetion between seid tube and dust-chamber, said valve bein carried by und removable with said duste iember.

ln a, Pneumatic renovetor, the combi.- netion with s easing provided with e` blastnozzle7 of a tube carried by said easing, e dust-ebamber havine; au lm'fndly-projeetinC tube adapted to slide over said first-named tube and project above it, and e valve can ried by said second-named tube.

In testimony whereof i have hereunto set my hand and aiiixed my seul in the pl'esenee of the two subscribing witnesses.

JUHN S. THUHBL/tblc EL. S.]

Witnesses:

JAMES H., Beeson, D. C. BETJEMAN.

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