US 1256189 A
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Description (OCR text may contain errors)
JOHN MACNAULL WILSON, OF MONTCLAIR, NEW JERSEY, ASSIGNOR TO FRANKLIN MURPHY, 0F NEWARK, NEW JERSEY.
PROCESS OF TREATING CAR-SEATS.
Specification of Letters Patent.
No Drawing. Application filed December 20. 1913, Serial No. 807,920. Renewed June 15, 1916. Serial No. 103,869.
To all whom it may concern:
Be it known that I, J OHN MACNAULL lVlLsox, a citizen of the United States, residing at Montclair, in the State of New Jersey, have invented certain new and useful Improvements in the Processes of T reating Car-Seats, of which the following is a specification.
The invention relates to a process of treating and renewing the color in dyed material, and relates particularly to a process for cleaning and renewing car seats which are exposed to deposits of soot, grease and various substances that adhere to and stain the covering, without removing the seats from the cars.
I-leretofore in order to remove the dirt, grease and other material adhering to material such as the covering of a car seat and to cause the color in the nap to be restored, it has been necessary to subject the cushions to a cleaning process and to a separate re-dyeing process. Such procedure was not only expensive in itself, but it required the cars or conveyances containin the seats to be sent to the shop so that all use thereof was lost for the period required in the cleaning and dyeing operation. 7
One of the main objects of my invention is to provide a process whereby both the cleaning and the renewing of car cushions can be accomplished without removing the cushions from the car, or even from the positions they occupy when in normal use, and which will not keep the car out of service for a period longer than the normal delay between trips.
A further object of my invention is to rovidc a process whereby the dye already in the cushion may be redistributed over the surface thereof without removing the cushion from its place and in such manner that any replaced or relocated dye will be caused to set promptly without croclring.
A still further object of the invention consists in cleaning the cushion and preparing the fibers thereof for subsequent treatment in such a manner that the dirt and other foreign substances contained in the cushion may be collected and removed in a sanitary manner.
The various other objects of the invention will be more fully set forth in the following description of the invention which consists in preparing the material to receive a suitable solution adapted to remove certain substances adhering to the fibers, to release any exccss dye that may be contained in any portion of the material, causing said excess dye to be distributed evenly over the outer portion of the material so as to give the same an approximately uniform color simultaneously working the nap to cause the excess dye to be properly distributed and absorbed and then permitting the redistributed dye to set.
The invention also consists in various other novel steps and combinations of steps hereinafter more fully set forth and described in connection with the preferred method of employing my improved process and various modifications thereof.
In carrying out my improved process, the car seat or other surface provided with a suitable covering, such as plush, is subjected to a carding action, which causes all projecting fibers to be straightened and slightly abraded and which causes any of the fibers which adhere either on account of pressure or the introduction of some foreign substance, as oil or grease. to be disentangled from each other. The dust, grit, fine cinders and other foreign substances which may have lodged in the nap are then removed by any well-known means, preferably, however. by a suitable suction apparatus which will cause the minute fibers or filaments that are integral with the nap to assume an upright position.
. After the material has been thoroughly carded, cleaned and the nap roughened, the material is subjected to the action of a solution capable, not only of removing grease and similar substances, but which will also dissolve the excess dye which always accumulates at the bottom of the nap when the material is first dyed. After the dye has become sutl'iciently liquid to permit reabsorption thereof, the nap is manipulated so that the ends of the fibers will be bent over and come in contact with the excess partly liquefied dye on the material adjacent the base of the nap. At the same time, the strands or filaments of which the nap is composed are loosened sufficiently to accelerate absorption and promote a certain amount of capillary action. The extended, almost microscopic fibers which have been intervals between trips.
until the appearance of the nap is uniform over the entire surface of the material.
As soon as the excess dye has been redis- 'tributed throughout the nap, it is caused to set speedily, so that it will not crock. This may be accomplished by combining a suitable slow acting agent with the dye releasing'solution, or it may be applied separately as desired. Finally, the material is thor- 'oughly rubbed with an absorbent material which will absorb any excess dye, thus causing the reabsorbed dye to set almost instanta'neously.
Ihave found in practice that a solution comprising approximately three per cent. of
sodium triphosphate and one to ten per cent. of alcohol will give desirable results. More alcohol may be added however, if it is desired to prevent freezin Preferably a small percentage of cresylic acid or other well-known disinfectant may be added. Preferably also approximately a small per cent. of sodium oleate or some similar salt is added to the solution. Sodium phosphate can be substituted for the sodium triphosphate without substantially changing the results obtained.
By means of my improved process, the
appearance of articles such as car seats in which an excess of dye at the base of the nap is invariably found, can be restored to a practically uniform color which differs from a similar article that has been redyed "only by being of a slightly lighter shade.
The entire process can be carried out in a comparatively short perlod of time so that,
in treating car seats of railway coaches, it is not necessary to withdraw the coach from traffic if advantage be taken of the usual Not only is the color of a faded or stained seat renewed and practically restored, but the cushion is thoroughly cleaned and can be disinfected at the same time. The treatment can be applied a number of times on the same cushion Without supplying fresh dye, since only a portion of the excess dye at the base of the .nap isreleased at one time and the original excess is usually suflicient to last fora considerable period.
Although I have described the several steps necessary incarryingout myprocess,
it will be obvious that various modifications within the knowledge of those skilled in the art may be made without departing from the invention, provided themeans set forth in the following claims be employed.
I claim as my invention 1. The process of cleaning and renewing dyed materials which consists in carding the same to loosen the fibers, comprising thenap and to disengage the filaments eX- tending therefrom, subjecting the material to the action of a solution capable of releasing the dye at the base of the nap, causing the excess dye "to be absorbed by the extending end portion of the nap, and causing the reabsorbed dye to set.
2. The process of cleaning and renewing previously dyed material having a nap which consists in carding the material to loosen the fibers of the nap, causing abrasion thereof so that miscroscopic filaments will extend therefrom, subjecting the materialto the action of a solution capable of releasing a portion of the excess dye-a'ttlre base of the nap, subjecting the nap to "movement in contrary directions to facilitate abof the material until the nap is of an approximately uniform color, then causing the dye to set and simultaneously removing any excess solution from the material, substantially as described.
4. The process of cleaning and renewing previously dyed material having a nap which consists in subjecting the nap to an abrading action to loosen the fibers thereof and produce filaments thereon, subjecting the material to the action of a cleansing solution containing an agent capable of releasing a portion of theexcess dye adjacent the warp, moving the nap in contrary-directions so as to bring the free ends of the nap into contact with the released dye and facilitate capillary movement of the released dye in the nap from the base toward the free ends thereof, removing the solution from the nap by causing the solution to be absorbed th refrom and simultaneously causing the dye to set.
5. The process of cleaning and renewing previously dyed material having a. nap which consists in carding the nap, subjecting the same to the suction action .of a partial vacuum, treating the material with :a solution containing a relatively quick acting dye releasing agent and a relatively slow acting mordant, subjecting the nap to pressure applied alternately in contrary directions to bend the free ends of a portion of the nap into contact with the base of the adjacent portion of the nap, removing any excess solution and permitting the released dye to set, substantially as described.
6. The process of cleaning and renewing previously dyed material comprising a nap which consists in carding the material, subjeeting the material to the action of a solution containing sodium oleate and alcohol to cleanse the nap and release a portion of the dye contained therein, bending the nap conic: 0! this patent may be obtained for in contrary directions to bring the free ends of each portion thereof in contact with the base of an adjacent portion of the nap, subjecting the material to the action of trisodium phosphate to cause the reabsorbed dye to reset, removing any excess of the solution from the material, and drying the material, substantially as described.
This specification signed and witnessed this 17th day of December, A. D., 1913.
J. MACNAULL WILSON.
Signed in the presence oflVILLIAM E. BLEIER, SAMUEL J OACHIM.
five cents each, by addressing the "Commissioner of latents,
Washington, D. G."