US1347195A - Workshop ventilation - Google Patents

Description

C. WELLER.

WORKSHOP VENTILATION.

APPLICATION FILED IAII.5, IQIII.

L34?, 1 95. mentari my 1920.

2 SHEETS-SHEET l.

figg@ C WELLEHI WORKSHOP VENTILATION.

APPLICATION FILED JAI-5, 19m.

ante July 2?, E92@ 2 SHEETS-SHEET 2.

.5, I l U I n if n 1 n w UNITED STATES PATENT OFFICE.

CHARLES WELLER, OF ZURICH, SWITZERLAND.

WORKSHOP VENTILATION.

Specification of Letters Patent.

Patented July 20, 1920.

Applicationvled January 5, 1918'. Serial No. 210,519.

T0 all whom t may concern.'

Be it known that I, CHARLES WELLER, citizen of Switzerland, residing at Zurich, Sndtzerland, have invented certain new and useful Improvements in )Workshop Ventilation, of which the following is a specification.

This invention relates to cleaning shops for cleansing work by means of a sand jet, the dust caused thereby inthe cleaning room being removed by means of an articially produced current of air.

The particular purpose of the invention is to create a cleaning shop protecting laborers from being inconvenienced by dust or draft, and insuring agreeable working. A.' further purpose of the invention is to pro cure the means of admitting the air required for the removal of dust, at a high speed,'as close as possible to the zone where dust is forming, thus a smaller quantity of air than usually is needed, and consequently the consumption of power for operating the eX- hauster diminishes. Besides, by the application of the invention, the greatest etliciency is obtained in cleansing all kinds of work. In order to accomplish said purposes, there are, according to the invention, for the admission of air adjustable channels provided for, one end communicating withthe open air, the other end running into the cleaning shop, so as to allow the air passing through these channels to be directed exactly onto the spot where required.

These channels can be suitably disposed so as to revolve around a vertical aXis, or, parallel to each other enabling them to be moved in longitudinal direction. In the latter case it is advisable to bend the channel ends projecting into the cleaning shop, toward each other so as to cause the currents of air, discharged by them, to concur at an angle of 90.

These and other features of the invention including certain details of construction and combinations of parts will be described in connection with the accompanying drawings and pointed out in the appended claims.

Referring now to the accompanying drawings, these showl two constructions under the invention, partly in schematic view; i. e.

Figure 1 shows the first construction under the invention, partly in longitudinal section partly in view,

Fig. 2 is a vertical section on line a-a of Fig. l,

Fig. 3 is a horizontal section on line -Z) of Fig. 1, showing part of the arrangement asseen from above,

Fig. l is part of a side elevation of the other construction,

Fig. 5 is a horizontal section through this construction on line c-c of Fig. fl.

Referring now more particularly to Figs. 1 to 3, the walls and ceiling of the cleaning shop, shown in these figures, are made of sheet iron, the shop consisting oli a cleaning room 1 and of a smaller room 2, in which the sand box 3 is placed, and where generally the workman also is who attends to the plant. Room l is closed up by a double door l and room 2 by a door 5. In room 1 a track 6 is provided for so as to allow the work to be transported `conveniently into and from the cleaning room; the latter having also a grate floor 7 (for clearer comprehension only partly drawn in Fig. 3) allowingr the sand which drops from the work, and the severed parts of material to iall into a collecting pit 8 provided for beneath room 1 and extending below room 2. This pit narrows toward its bottom, on which a screw conveyer 9 is disposed for the transport of the sand to an elevator 10 conveying said sand back to box 3. Above the screw conveyerV there is a horizontal wire sieve 11 (part of which is indicated in Fig. 3) disposed in the collecting pit S to retain the coarser impurities that drop with the sand. An apparatus for the removal of dust 12 is mounted into the return conduit leading from elevator 10 to sand boX 3. The latter is provided, at the bottom, with a mixing apparatus connected to a compressed air piping 13, thus allowing the sand to be blown onto the work under high pressure through a conduit '14 (drawn in Fig. 3 only) connected to said mixing apparatus. In order to remove the dust caused thereby from the room 1, a strong current of air is produced therein. To this effect, an outlet shaft 15 is disposed on the ceiling of the cleaning shop and connected to an exhauster (not drawn) besides, at the bottom and on the top of the wall parts 16 (Fig. 3) of room 1, adjoining to room 2, two air admission openings are provided for, into each of which a casing 17 is placed. The two casings of each wall part 16 are connected with each other by a cylinder 18-revolving around its vertical axis. Each cylinder has a longi-A tudinal slot extending almost over its entire length, a guide block 19 projecting radi ally `from the cylinder being connected to.

the slot. Vhile work is cleansed, outside Aairis sucked in at a'high speed through the air admission channels 17', 1S, 19 into room 1, the current of air, thereby lproduced in this room, being aidedvby the cxhauster which is set going in the meantime. Owing to the rotation oi the cylinders 18, the guide blocks 19 can be directed with their noZ- zles straight onto theV work, thus the air ,'currents, discharged by "them, strike the Y let shaft 15 by a piping. Y

The second construction, shown in Figs.-

lot the current of air.

` work with the greatest possible iorce and at 4 and 5, dilers from that described above, chiefly by the fact that vertical slots are provided for in the wall parts 20, intoV each of whichis fitted an air admission channel 22, open at either end. These `admission channels are suspended from guide rails 24 by means of sheaves, and can be moved in Ytheir longitudinal direction, c'. e. parallelrto each other, as indicated by a dot andfdash line in Fig.v5. The'ends of the admission channels 22 projecting into lroom 1 are bent toward each other so as tosallow the currents of air, discharged by them, to cross atY an angle of 90. The cleaning room 1 can be charged in this instance from theV front side, opposite to room 2 and provided with a double door 11. i

Having described the nature of my invention, what 1 claim as new and desireV to secure by Letters Patent of the 'United States is 1. In a device of the character described, Y

the combination with a casing communicating with atmosphere,.an air conduit movably mounted in and communicating with said casing and having an air emission opening/formed in and extending lengthwise of its wall, and` means immediately adjacent said opening for giving directionto air issuing through said opening. Y

2. In a device of the character described.

the combination with a'pair ooppositely Vdisposed casings communicating with Aatmosphere', an air conduit rotatably mounted in and its ends communicating with said casings and havingV an airemission opening formed in and extending lengthwise of its wall, and an air directing vmember mounted adjacent said opening in the air conduit.

3. In a device of the character described,

the combination with upper and lower oppositely disposed casings bothcommunicating with atmospherejanopen ended cylinder held in vsaid casings and rotatable about its own axis therein, said cylinder having a slot in its; wall extending substantially throughout its length, and wings at opposite sides of said slot for giving direction to air issuing therethrough.

In testimony whereof I have aifixed'my signature in presence of two witnesses.

CHARLES WELLER.

Witnesses: N. B. RHUMED L. RAPHAEL GEIsLER.

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