Патент USA US2124135код для вставки
July 19, 1938. I E. T. BROWN 2,124,135 FIREPLACE SCREEN AND DRAFT CONTROL Filed April 50, 1956 2 Sheets-Sheet 1 a_ _ _ _. ATTORNEYS July 19, 1938.- E. T. BROW-N 2,124,135 FIREPLACE SCREEN AND DRAFT CONTROL 7 ' / I/ 6411:‘ -------- _- \if' \i I515: 1% - \2i." it ‘3/ We: Filed April 50, 1936 2 Sheets-Sheet 2 Q5164‘ HI; x “a In I? _‘ ' '/—--.-----—-----.-45\ 35 Jess/4Q W55 64 48m‘;L III \III 50 ’ In III\ In 1': ' ’ } ||, 37 5!.\ _j INVENTOR '5, ‘Brown Y Patented July 19, 1938 2,124,135 UNITED STATES PATENT OFFICE 2,124,135 FIREPLACE SCREEN AND DRAFT CONTROL Eugene T. Brown, Seattle, Wash. Application April 30, 1936, Serial No. 77,243 3 Claims. My present invention relates to the general (01. 126—202) vice .as installed in a conventional ?replace art of heating devices and more particularly to opening. a ?replace screen and draft control. Figure 2 is a fragmentary, cross-sectional View through my screen and showing the meansfor adjusting and securing the device. Figure 3 is a front elevation of a ?replace, hav ing my device installed with certain parts shown in section to better illustrate the construction While improvements have been‘ made in all 5 types of heating equipment there has not, to my knowledge, been a worthwhile change in devices for controlling ?replace ?res. Many types of dampers have been provided. However, a damp er fails to serve its intended purpose when ap 10 plied to a ?replace because of the fact that once gases are formed, as a result of the heat applied to the fuel, they must be allowed to go up the chimney but, if the chimney is restricted by a damper, they will be discharged into the room. 15 This is objectionable. Further, there is a real need for means that will permit checking a ?re place ?re and that will prevent, with certainty, sparks being thrown out of a ?replace and caus ing damage. Then, too, in many localities where thereof. ' ' Figure 4 is a fragmentary View in perspective 10 to illustrate certain parts of my device. Figure 5 is a perspective view showing, in ex ploded relationship, a number of the essential parts that distinguishes my present device. Referring to the drawings, throughout which 15 like reference characters indicate like parts,'6 generally designates my curtain. This may fol low approved practice for curtains designed to resist heat. Throughout my present drawings 20 the ?replace is a real means of heating, it is de I have illustrated one form of curtain which has sirable to provide the same arrangement of bank proved very satisfactory. This consists of a plu rality of substantially semi-circular plates or ing a ?re as is possible with furnaces, and the like. None of the devices inspected do more than 25 to provide a directing means for the smoke. With my present device, however, I provide a de?nite curtain or closure which will be substan~ 30 readily after the showing of Figure 2 and the tially air tight, will permit of actually excluding hinge thus shown is relatively air tight, yet pro the air from a ?replace ?re without in any way vides a hinge construction that can be relied up on to work smoothly. To have the same roll 30 easily on a central spindle or roller member, as M, it has been found desirable to have the hinged. interfering with the chimney opening. It fur ther acts as a screen to hide- from view the ?re place opening in the floor which so often be comes a natural dumping ground for sweepings and the like. My present invention is believed 35 to overcome the de?ciencies heretofore existing and to provide means that will make a ?replace as safe as any stove or furnace; means that will permit actually controlling the ?re to the point of suffocation if necessary. I provide a curtain 40 which can be adjusted to meet the need. In starting a ?re, for instance, it can be drawn quite low down so that the draft, normally created in the chimney, will be forced to draw in air near the floor so that it will pass up through the grate or coal basket, or underneath the wood as it is raised above the hearth by andirons, or the like, and the ?re can be built quite close to the curtain so as to receive ade 5_() quate draft. Other and more speci?c objects will be appar— ent from the following description taken in con nection with the accompanying drawings, where in 55 links 8 each being provided with an open hook portion l0 and a bead portion I2. When so ar ranged it has been found that the placement of a unit can be easily effected; that it will draw up Figure 1 is a perspective View showing my de members ofv somewhat different chord distances so that the joints are staggered around the roller and thus lie most compactly when rolled up. At the lower end in the present showing I‘have illustrated- a straight, hinged member It. This is merely for distinction in appearance and might be asegmental member as the others. The lower end of this member I provide with a lock bar l8. This is formed preferably of a heavy wire which at its center 20 is twisted to form the handle 2|. This twisting makes it possible to adjust the over all length of bar l8 so that a properly ?tted in stallation can be easily effected. Each end of 45 bar I8 is formed with a return bend as 23 and 24 having the free ends 25 and 26 respectively parallel to that portion of curtain l6 which en closes the long stretch of bar la. The purpose of these return shafts is to provide a locking ar 50 rangement for my curtain when adjusted in its lower positions. This is accomplished by pro— viding corrugated guideways as 30 and 3! which are so spaced apart that they will not permit the turning of bar l8 thus providing a toggle 55 2 2,124,135 be built up of a plurality of parts in accordance with the installation requirements. As a means locking means which looks the curtain against upward movement. Roller I4, to which the upper end of my joint ed curtain is secured, is mounted for rotation upon inserted bearing members 33 and 34. These of adjusting my device and aiding in the ease of installation I provide a plurality of expansion bolts 62 with screws operating in slots 64 in the two members have an outside diameter equal to end plate members. the inside diameter of roller I4 and are further In order to obtain more satisfactory results from my device it is desirable that the same be provided with the extension lugs as 36 and 31, respectively, which are adapted to engage in slot 10 38 formed in the tubular roller l4. Each of these bearing members further is relieved as at 40 and 4H so as to accommodate the turned over lip 43 where the upper curtain member is secured in slot 38. Bearing member 33 has an outwardly set in ?re clay so that any qualities of the side walls of the ?re place may be compensated for 10 and a seal be obtained around the margins. It is also desirable to give an exit for any gases that 15 extending journal portion 44 which engages the might be trapped in the housing around roller I4 and to this end I have provided a plurality of openings 64 which enables the draft of the chim 15 end plate 46 of my housing assembly. The jour~ nal for the other end is provided by the rod 48 which has a square end 56, that in turn is secured in the opposite end plates 52 and thus held 20 against rotation. Hole 53 in member 34 should be ney to withdraw any gases from the housing. When so installed in a substantially air tight manner it is impossible for any down drafts to carry fumes, smoke or ashes out into the room. The foregoing description and the accom 20 of such a size as to form a suitable bearing sur face on rod 48. Disposed within roller I4 and about rod 48 is the tortion spring 54. This is ?xedly secured to 25 rod 48 at one end or otherwise secured against rotation with its free end 55 formed so as to be engaged in slot 38 and thus, as roller I4 is re volved, a tortional resistance is set up within spring 54. A suitable guide or rest for the end of rod 48 is provided with washer 51 which should be a free ?t within roller I4 where it may slide without undue friction as the roller is revolved. In the accompanying drawings I have indicated one spring 54 extending part way along the open— ing of the ?replace. Ordinarily it has been found that one spring can be used with ?replace open ings of normal extent such as are used in coal burning ?replaces. If, however, a larger opening is employed it is often desirable to use two such springs, one in each end of roller I4 in which case the springs would be oppositely faced so that they would each have equal resistance to the un rolling of the curtain and tend at all times to re store it to its upper or rolled up position. This provides upward drag on the curtain which permits the successful operation of the toggle locking and adjusting means provided by lock ing bar I8. I have found it desirable to fully enclose my roller I4, after the showing of Figure 2, so that if the screen is pulled fully down as would be done if the ?re were banked or otherwise smoth ered, it will prevent escape of the pent up gases that are so obnoxious. This can be accomplished by extending the uncorrugated portions of guides 30 and 3| upwardly until they engage a folded-in end as 60 of end plates 4B—-52 or the housing may panying drawings are believed to clearly disclose a preferred embodiment of my invention but it will be understood that this disclosure is merely illustrative and that such changes in the inven tion may be made as are fairly within the scope 25 and spirit of the following claims. I claim: 1. The combination in a ?exible screen adapt ed to be mounted in a ?re place, with a spring wound roller for the screen, of a spaced pair of 30 guides each comprising a pair of spaced corru gated plates, an oscillatable lock-bar mounted in the free end of the screen and adapted to frie~ tionally engage two of the corrugated plates, and locking means on the lock-bar for engagement 35 with the other two guide plates. 2. The combination with a ?exible screen and its spring-wound roller, of a pair of laterally spaced guides each having spaced opposed cor rugated faces, an oscillatable lock bar mounted 40 in the ?exible screen and frictionally engaged in two corrugated faces, said lock bar having return bends at its ends, and the free ends of said return bends having frictional engagement with the other two corrugated faces. 3. In a ?replace screen, the combination with a.housing having spaced depending legs, and a spring-wound ?exible screen mounted in the housing with its lateral edges guided in said legs, of means at the free end of the screen adapted to impinge against one wall of a leg, and said means also including a retaining device adapted to impinge against an opposite wall of said leg, for holding the screen in adjusted posi tion. EUGENE '1". BROWN.