US1542145A - Oven for treating vehicle bodies - Google Patents

Description

June'fl,y M25. 1,542,145

l'\.I A, KAUFFMAN OVEN FOR TREATING VEHICLE BODIES Filed April :50, 1923 2 Sheets-Sheet l il \\wm i nj, gi

, RX N 1 w l N 1 M m n; M,

June 16, 1925.

f R. A. KAUFFMAN OVEN FOR TREATING VEHICLE BODIES N I a i mvENToR Filed April "so, 192:5l 2 sheets-sheet 2 Patented June 16, 1925.

UNITED sTATEs l 1,542,145 PATENT OFFICE'.

RALPH A. KAUFFMAN, F SEATTLE, WASHINGTON.

OVEN' FOR TREATING VEHICLE BODIES.

Application lcd .April 30, 1923. Serial' No. 635,806.

, ments in Ovens for Treating Vehicle Bodies,

of which the following is a specication.

This invention relates to new and useful improvements in the construction of ovens employed in buildings wherein vehicle bodies are painted; it being the principal object of the invention to provide an oven with particular regard to the open spaces and rooms 'of a building wheren dismantling, priming, surfacing, paintingand varnishing'may be done and wherein the ovens are provided for drying the bodies; the spaces and ovens being so located, with respect to each other, that the vehicles may be advanced progressively through they building and finishing done in a minimum v amount of time with no confusion and in an ordinary and systematic manner.

Another object of the invention resides in the details of construction of the ovens and in the provision of heating units and air circulating devices whereby heat will be applied evenly to all parts of a vehicle.

Other objects of the invention reside in the relative location of the open spaces, ovens and passages which permits a vehicle to be advanced rogressively through the different steps of) the system and painting completed in the shortest time possible.

In accomplishing these objects. of the invention, I have provided the improved details of construction, the preferred forms of which are illustrated in the accompanyin drawing, whereinigure 1 is a plan view of a building wherein a method of the above mentioned character may be carried out.

Figure 2 is a vertical, sectional` view through one of the drying ovens.

Figure 3 is a plan view of the same.

Figure 4 is a sectional view taken on the line 4--4 in Figure 2.

Referring more in detail to the drawings- In Figure 1 I have shown a plan view of a building wherein my method of painting vehicles may be effectively carried out; the building preferably to be of rectangular form and is provided at the front end with an opening 1 through which vehicles may enter and leave, and which leads into a comparatively large rpom 2 whereinfstripping or dismantling of the vehicles is done preparatory to painting. This room extends lengthwise of the building and is bounded by partition walls 3", 4 and 5; the walls 3 and 4 being arranged parallel with the outer side walls of the'building and the wall 5 is parallel with its rear end wall, and all are 'spaced sufiiciently from the building walls so as to provide for the progress and advancement of vehicles, as presently described about the outside passage thus provided.

When a vehicle is taken into' the building to be painted, it is mounted on rollers and the body stripped of exposed parts not to be painted While in the room 2. It is then advanced through an opening 6 in wall 3 near the front of the building into an open space 7 where the first priming coat is applied. It is then advanced rearwardly of the building into an oven 8 where this coat is dried the proper length of time, and is then again advanced rearwardly into an open space 9 where the first filler coat is applied, after which it is moved into an oven 10 and the filler is dried. The vehicle is then removed from the oven into an open space 11 where a second priming coat is added, then again moved to an oven l2 where this is dried, after which it is removed into an open space 13 where sanding and surfacing is done.

It is my intention to make the ovens and spaces between them of such dimensions that each will accommodate a certain spaced number of vehicles, which will insure that the work can be carried on continuously in each point without any delay on account ot' congestion of any of the different stations, and it has been found that the work may be carried on tothe best possible advantage in a building of the proportions illustrated, and wherein the advance ovens and rooms are adapted to accommodate the number of vehicles which I have indicated in each.

At the rear end of the building is an open space 14: suitable for two vehicles at a time where the first coat of color varnish is applied and from which the vehicle may be advanced directly for drying into an oven 15 located centrally at the rear of the building, after which they are advanced from the oven into a space 16 where a second coat is applied and are then moved into an oven 17 located in the corner of `the building where this coat may be dried- From this oven 17 the cars are moved forwardly into an open space 18 for rubbing and varnishing and then advanced and dried in an oven 19 from which they are moved into an open space 20 suitable for six vehicles for the final finishing, and are then advanced three at a time into an oven 2l for the final baking and drying operation. After this they are advanced into a room 22 parallel with room 2 and of the same length where the final assembling is done.

It will be observed that I have left passageways, as at 23, between the ovens and partition walls, and have provided'openings at desirable points in the partitions so that all points or stations may be reached conveniently and the Work carried on to the best possible advantage. Itrwill be also noted that I have provided windows in the outer Walls for an abundance of light where it isneeded, and Ventilating fans, as indicated at 24, in Figure 4, are provided for causing a circulation of air. Suitable skylights and ventilators, not shown, lnay also be provided in the roof of the building for bettering the working conditions.

Since it is desired to dry `liller varnish and paint coats that are applied'to the vehicles, in the shortest time possible and to dry these coats evenly on the under sides as well as the top surfaces, I have provided improved means in each oven whereby this may be accomplished; each oven is provided wit a ceiling wall 25 that is spaced somewhat from the roof of the building, and located centrally above the oven in the roof is a ventilated cupilo 26 where a blower fan 27 is mounted and operated by an electric motor 27 to force air through the passageWay 28 provided between the roof and ceiling into air passages 29 leading downwardly at opposite ends of the oven to be heated by electric' units indicated at 30 and discharged into the oven. In the ioor of each oven is an air outlet 3l that leads along the floor to the exterior of the building.

With this arrangement, heated air will be caused to circulate entirely about, over and under the vehicles and all parts will be quickly and evenly dried.

The ovens may be provided with doors of any desirable type, with rolling or sliding, so long as the can be easily operated and will be air tig t.

With the building so arranged, it will be seen that it is possible to advance vehicles successively and continuousl through the advance steps required, and t at by providing suticient workmen for the advance stations, there will be no need of delaying at any point. Such a method insures quick and satisfactory results.

It is further apparentrthat buildings of this type could be constructed in advance sizes according to the capacity desired, and that the plan couldV be altered to some eX- tent without departing from the spirit of the invention. For this reason I do not wish to be limited only to the details herein illustrated and described.

Having thus described my invention, what I claim as new therein and desire to secure by Letters Patent, is:

1. In a building of the class described, a drying oven having an air inlet at the top and an outlet located centrally in the floor thereof with means for forcibly delivering air through the top opening to opposite ends of the oven and means for heating the air as delivered.

.2.- In a building of the class described, a passage along which vehicles may be successively advanced and ovens located in said passage, each having opposite side openings through which said vehicles may 4pass and provided centrally at the .top and floor with air inlet and outlet openings, with channels leading from said inlet to oppositeends of the oven, a blower located in the inlet and heating means located at the discharge ends of the channels.

Signed at Seattle, King County, Washington, this 9th day of February, 1923.l

RALPH A. KAUFFMAN.

Images