US1889638A

US1889638A - Door

Info

Publication number: US1889638A
Application number: US510563A
Authority: US
Inventors: Fred V Cooper
Original assignee: Individual
Current assignee: Individual
Priority date: 1931-01-22
Filing date: 1931-01-22
Publication date: 1932-11-29
Anticipated expiration: 1949-11-29

Description

Nov. 29, 1932.

F. v. COOPER 1,889,638

DOOR

Filed Jan. 22, 1931 4 Sheets-Sheet l Van 1 'lll A tlorney Nov. 2-9, 1932. v COOPER 1,889,638

DOOR

Filed Jan. 22, 1951 4sheets-s'het 2 Invenor Bymw@ A Harney NOV. 29, 1932. F, v COOPER 1,889,638

DOOR

Filed Jan. 22, 1931 4 Sheets-Sheet 3 A Homey Nov. 29, 1932. F. v. COOPER DooR liSheecs-Sheet 4 V IM Filed Jan. 22. 1931 Invenor 777106Z bo/ef'f 1 @Mao/@2M A Homey Patented Nov. 29, 1932 UNITED STATES PATENT OFFICE Application led January 22, 1931. Serial No. 510,568.

The present invention relates to improvements in door construction and more particularly to doors of the overhead type and as for an important object to provide, in a manner as hereinafter set forth, a door construction embodying a novel arrangement of parts whereby the door may be expeditiously moved to its (fiipen or closed position with a minimum of e ort.

Other objects of the invention are to'provide a door of the character described which will be simple in construction, strong, durable, efficient and reliable in operation and which may be manufactured and installed at low cost.

All of the foregoing and still further ob- 'ects and advantages of the invention may become apparent from a study of the following specification, taken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughout the several views, and wherein v Figure 1 is a view in elevation looking at the outer side of a door constructed in accordance with this invention, said door being in closed position.

Figure 2 is a vertical cross sectional view taken substantially on the line 2-2 of Figure 1 looking in the direction indicated by the arrows.

Fi re 3 is a. view in elevation looking at the oor from the inner side thereof and showing the same in closed position.

Figure 4 is a horizontal sectional view taken substantially on the line 4 4 of Figure 1 looking downwardly, as indicated by the arrows.

Figure 5 is a fragmentary view in vertical section through a lower portion of the door.

Figure 6 is a detail view in vertical crosssection taken substantially on the line 6-6 of Figure 2.

Figure 7 is a detail view in elevation showing the pulley wheel and its supporting bracket, a pair of which are used and over which are trained the counterweight cables.

Figure 8 is a detail view in section through one of the door guide rollers.

Referring to the drawings in detail, it will be seen that the reference numeral 1 designates a door frame and said frame includes the vertical strips 2 having their inner edges spaced from the inner edges of the studs 3.

The reference numeral 4 designates generally a pair of tracks, said tracks being formed of angle iron and each comprising a horizontal leg 5, a vertical leg 6 secured to the opposed sides of the studs 3 which are free of the strips 2. Each of the tracks 4 further includes an arcuate connecting or intermediate portion 7. The leg portions 5 and 6 of each track 4 are straight and the leg portions 5 extend above the beams 8 which form a part of the ceiling 9 of the building. The ceiling 9 of the building is, of course, provided with an opening, as at l0 for the passage of the tracks, and the door.`I

The side of the horizontal leg 6 of each track 4 which is free of the studs 3 is disposed in opposed, spaced relation to the inner edge of the adjacent strip 2 and, in conjunction with said strip 2 provides a vertical channel, as best seen in Figure 4 of the drawings. The channels thus provided on opposite sides of the doorway slidably receive the end portions of the horizontal sections 11 of the door which is designated generally by the reference numeral 12. The sections 11 are pivotally connected together by the hinge straps 13 which are secured thereto adjacentY the ends thereof but in spaced relation to said ends. As illustrated to advantage in Fi ure 2 of the drawings, the upper portion cfg the hinge strap on the uppermost of the sections 11 is bent as at 14 to provide a cam, the purpose of which will be presently set forth. Each of the door sections 11 is recessed in its upper portion, as at 15, for the reception of the depending tongues 16 of the superjacent section for providing a substantially weatherproof joint between the sections. The lower edge of 'the lowermost section is provided with a weatherstrip 17 which is secnred thereon by a binding strip 17', as illustrated to advantage in Figure 5 of the drawin The inner edges of the strips 2 and also of t e cross member 18 of the door frame have secured thereto a weather strip 19 of suitable material for engagement by the door 12.

The inner flanges of the tracks 4 have mounted thereon the spaced brackets 20 (see Figure. 6) upon which are journaled the rollers 21 having their periphery projecting beyond said inner flanges of the tracks 4 for engagement with the sections 11 of the door 12. The door sections 11 have mounted thereon between the hinge straps 13 and the ends of said sections the strips 22 of suitable exible material with which the rollers 21 contact.

Angular arms 23 are rigidly mounted on the inner side of the lowermost section 11 and extends therefrom to a point adjacent the remote sides of the studs 3, said arms having an eye on their free ends with which one end of the adjacent cables 24 is connected. The cables 24 are trained over the pulley wheels 25 which are journaled in supporting brackets which, in turn, are secured to the building. The cables 24 have their other ends connected to the trains of vertically spaced counterweights 27 which are secured by flexible cables 28 the pulley wheels 25 have grooved peripheries for receiving the cables A comparatively large guide roller 29 and a comparatively small guide roller 30 are disposed for rotation adjacent the arcuate intermediate portions 7 of the tracks 4 in the manner illustrated to advantage in Figure 2 of the drawings. As best seen in Figure 8 of the drawings, the periphery of each of the guide rollers is provided with a suitable cushion 31 for contact with the door. Arms 32 extend laterally from the tracks 4 adjacent the top of the door frame for engagement with the cam portions 14 of the uppermosthinged straps 13 in a manner to engage the uppermost door section l1 against the weather strip 19 which is mounted on the inner edge of the upper cross member 18 of the door frame. Certain of the door sections 11 may, if desired, be provided with windows 33 which may be of any shape and dimensions.

In operation, the door may be raised in an obvious manner from the vertical portion 6 of the tracks 4 to the upper horizontal portions 5 of said tracks, the door traveling on the rollers 21 to reduce friction with the tracks 4. The guide rollers 29 and 30 will cause the sections of the door 12 to follow substantially the curvature of the portions 7 of the tracks and will prevent buckling of the sections. As the door is raised the counterweights 27 successively come to rest on the ground or other supporting surface to progressively decrease the Weight on the cables 2 4. As hereinbefore stated, the arms 32'engage the cam portions 14 for pressing the uppermost door section 11 against the weather strip 19 of the upper cross member 18 of the door frame. A handle 35 may be provided on the lowermost door section 11 to facilitate raising and lowering the door.

It is believed that the many advantages of a door constructed in accordance with this invention will be readily understood, and although the preferred embodiment of the invention is as illust-rated and described, it is to be understood that changes in the details of construction may be had which will fall within the scope of the invention as claimed.

What is claimed is A structure of the class described comprising, in combination, a door frame, including side members, a pair of angle irons, tracks having vertical portions secured to the frame and forming with the inner edges of said side members, channels and said tracks having horizontal portions extending substantially at right angles to the door frame and intermediate arcuate portions connecting tlie horizontal portions to the vertical portions, rollers carried by the arcuate and horizontal portions for supporting a door in spaced relation from said track portion, a door mounted for travel on the tracks and comprising a plurality of horizontally disposed sections, the ends of the sections fitting in the channels when the door is in closed position` guide rollers adjacent the arcuate track parts for directing the door sections upon the arcuate parts during movement of the door` hinge straps secured to the door sections adjacent the ends thereof, pivotally connecting said sections together, each strap extending entirely across the section with its ends pivoted to the straps of adjacent sections, the upper ends of the straps on the topmost section being bent outwardly to form cams, and projections at the upper ends of the vertical por- A tions of the tracks for engaging said cams for forcing the topmost section against the top of the door frame, pulleys located above the vertical track parts, cables passing over said pulleys and each having one end connected to the lowermost door section. and weights on the other ends of said cables.

In testimony whereof l aflix mv signature.

FRED V. COPER..