US1307483A - coleman - Google Patents

Description

F. A. COLEMAN.

CORE OVEN DOOR.

APPLICATION FILED MAR. 21. 1918.

Patented June 24, 1919.

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CORE OVEN DOOR.

APPLICATION FILED MAR. 27. I918.

Patented June 24, I919.

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UNITED STATES PATENT OFFICE.

FREDERICK A. COLEMAN, OF CLEVELAND HEIGHTS, OHIO, ASSIGNOR TO THE FOUNDRY EQUIPMENT COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

CORE-OVEN DOOR.

Specification of Letters Patent.

Patented June 24, 1919.

Application filed March 27, 1918. Serial No. 225,140.

T 0 all whom it may concern.

Be it known that I, FREDERICK A. COLE- MAN, residing at Cleveland Heights, in the county of Cuyahoga and State of 01110, have invented a certain new and useful Improvement in Core-Oven Doors, of which the following is a full, clear, and exact description, reference being had to the accompany ing drawings.

This invention relates to the constructlon of heavy doors and means for carrying the same, and the essential objects are to provide a simple eflective door construction and carrying mechanism therefor, which may be cheaply manufactured, very durable in service and which shall so carry the door that it may be easily swung, to open or close the same. A more specific object is to prov1de a door hanging mechanism which may retain the door in its proper position with relation to the opening closed thereby, without the difficulties of sagging or binding due towear or warping of the door or the hanging mechanism, while at the same time making such mechanism as light as possible in proportlon to the weight of the door, thereby effecting a material savin of metal.

Still another 0 ject is to provide a simple, effective latching device for holding the door to its frame at separated points consequent upon the movement of a single manually operated lever.

My invention is hereinafter more fully de scribed in connection with the accompanying drawings illustrating a preferred embodiment of my invention and the essentlal characteristics are'summarized in the claims.

substantially on the line 55 of Fig. 1; 'Fig. 6 is an enlarged detail of the latch operating lever in the nature of a section on the line 66 of Fig. 1.

Describing the parts by the use of reference numerals, 1 designates a wall through which is formed a door opening 3.. The wall may be taken as illustrating the front wall of a large core. oven and composed of masonry, concrete or like material. At each side of the door opening are vertical channel beams 5 and 6, positioned so that the flanges project outwardly from the wall 1 and secured to the wall by bolts 7 extending through the wall and through channel beams 8 and 9 on the inner side of the wall. The channel beam 6 is shown as extending downwardly into masonry 10, forming the floor, to provide a more rigid anchorage whereby the weight of the door may be carried by the channel member without any danger of displacing the same.

The door shown in the drawings comprises a large fiat metal plate 12, overlapping the sides of the opening 3 at the sides and top and fitting against a raised ramp or thresh old 13 extending across the bottom of the opening. As this door is intended to be heat resisting, I provide on the inner side of the plate a rib extendin in a rectangle entirely around the door ust within the opening and formed preferably'of angle iron 15. The space within the rib is shown as filled with suitable, refractory material 16. It is obvious that such door is necessarily very heavy and to provide a satisfactory means for hanging the door so that it may be easily swung to open or close, it is desirable that such hanging mechanism be made light as possible commensurate with the work to be performed, and it is also desirable to suspend the door substantially at the middle portion thereof.

Accordingly I provide across the face of the door large comparatively heavy outwardly extending flanges 20, shown as comprising one flange of an angle iron, the other flange 21 of which is suitably secured to the plate 12. At the middle portion of these flanges 20 I provide openings adapted to receive a vertical shaft 23 shown as held in position by suitable pins, such as cotter pins 24:. A similar shaft 25 extends through outwardly turned ears 28 of brackets 27 secured to the web of the channel 6.

Connecting the two shafts 23 and 25 is a ban er frame com risin small vertical an-' 7 I gle beams 30 and 31, each havlng one flange turned toward the opposite beam and the other flange projecting outwardly from the door, the first mentioned flanges being suitably secured to gusset plates 32 and 33 at the top and bottom of the frame, and the gusset plates being connected by short horizontal angle beams and 36 of larger cross section and having one flange secured to the gusset plates while the other flange projects inwardly toward the door as indicated at 37. The flanges 37 rest at one end upon the ears 26 and have openings rotatably embracing the shaft 25 while projecting beneath the flanges 20 of the angles 21 on the door and embracing the shaft 23. Suitable washers 38 separate the flanges 37 from the flanges 20 and secure freedom of swinging movement. To strengthen this frame and brace it against the major load strain, I provide a suitable brace comprising comparatively small angle iron secured to an upper gusset plate 32 adjacent the channel 6 and to lower the gusset plate 33 adjacent the center of the door, as shown.

To allow the door and frame to swing open somewhat more than '90 degrees from its closed position it is necessary to cut away a portion of the outer flange of the channel 6 as indicated at 41, thus permitting the frame adjacent the channel to swing farther around the shaft 25.

It will be seen that this provides a sturdy supporting device for the door permitting the door freer swinging movement than mere hinges and insuringthe balance thereof preventing sagging or binding of the door.

The looking or latching device for holding the dooi tightly in position when closed maybe very simple and inexpensively constructed in accordance with my invention as follows:

Vertically mounted on the front of the door and having bearings in the flanges 20 and outwardly extending ears or clips 45 is a rock shaft 46. Mounted on the rock shaft are double clevises 48 having hubs embracing the shaft and secured thereto by set screws 49. These clevises are suitably pivoted to the ends of bars 50 and 51 extending to the right and left hand sides of the door, respectively, through guiding straps 52 and 53. In the inner flanges of the channels 5 and 6 are made openings adapted to receive the tapered ends of the bars 50 and 51. The intermediate portion of the shaft is embraced by outwardly extending ears of brackets 54 between which is mounted the hub of a hand lever 56 rigid on the shaft and having a suitable handle 57. It will be seen that swinging the handle from the position shown in Figs. 1 and 2 to a position substantially at right angles to the door will withdraw the ends of the bars 50 and 51 from the openings in the channel flanges thereby releasing the door, whereupon it may be opened. It will be noted particularly from Fig. 5, that the ends of these bars are formed with a shoulder at 57 pressing firmly against the plate 12 of the door and acting in a wedgelike manner to insure tight contact of the plate with the wall 31.

From the foregoing description it will be seen that I have provided a door hanging and latching mechanism accomplishing the results set out and one not liable to get out of order and very durable in service while being capable of construction of standard beams, shafts and bars.

It will also be seen that the latching mechanism provides for holding the door in its closed position by engaging it substantially at the four corners.

Having thus described my invention what I claim is 1. The combination with a door and a doorway, of a rectangular frame pivotally carried by the doorway adjacent to one edge of the door, said frame having its long dimension vertical, means for pivoting the central portion of the door to the frame adj acent to the upper and lower corners of the frame, and means on the frame for supporting the door.

2. The combination of a door having transverse brace bars secured to it near its top and bottom respectively, a frame pivoted adjacent to the edge of the bar, and means for pivotally connecting the other edge of the frame to said brace bars adjacent to the upper and lower corners of the frame.

3. The combination, with a door having transverse brace bars with projecting flanges, of a rectangular frame pivoted to the doorway, said frame having top and bottom bars underhanging the brace bars of the door, and a vertical shaft extending through the flanges on the frame and door.

4. The combination with a door, of a 105 transverse bracing flange projecting outwardly from the door adjacent the top and bottom thereof, a shaft projecting through said flanges, an open frame having inwardly turned flanges embracing the shaft and ex- 110 tending beneath the flanges on the door, a

beam secured to the wall atthe side of the door and carrying rigid outward projections, a shaft having bearings in said projections and extending through inwardly turned flanges on said frame whereby the frame may swing about the last mentioned shaft and carry the door. 5. The combination with a door, means for swinging the door to open and close the same, a shaft mounted on the door, means for rocking said shaft through a partial rotation, laterally projecting members carried by said shaft, bars pivoted to said laterally projecting members and extending past the edge of the door, and means at the sides of the. door for engaging the ends of said bars when the shaft is moved to project the same. i

'6. The combination with a door, of means for swinging the same, structural beams at each side of the door, a shaft carried by the door, laterally extending ears carried by the shaft and projecting in opposite directions therefrom, bars projecting each way from the shaft and pivoted to said ears, means for partially rotating the shaft to move the bars in and out with relation to the door to cause the bars to'engage the structural beams.

7. The combination with a door, of means for swinging the same, structural beams at each side of the door having outwardly turned flanges, a vertical shaft pivoted to the door having laterally extending ears projecting in opposite directions therefrom, bars projecting each way from the shaft and pivoted to said ears, guides adjacent the sides of the door through which said bars may slide, means for partially rotating the shaft to move the bars in and out with relation to the door, openings in said flanges adapted to receive the ends of the bars, the

ends of said bars beingarranged to wedge the door to closed position when thrust outwardly.

8. The combination with a door, of a frame carrying the door; pivotally secured thereto at vertically separated points, a support at the side of the door, Vertically separated pivot members securing the frame to the support, a latching mechanism comprising an upright shaft, laterally extending projections extending in opposite directions fromthe shaft, bars pivoted to said projections and extending past the adjacent edge of the door, frame members at the side of the door having flanges provided with openings adapted to receive the ends of said bars, and means for giving said shaft a partial rotation to thrust the bars outwardly, or withdraw the same.

In testimony whereof, I hereunto aflix my signature.

FREDERICK A. COLEMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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