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Publication numberUS3258285 A
Publication typeGrant
Publication dateJun 28, 1966
Filing dateOct 1, 1964
Priority dateOct 1, 1964
Publication numberUS 3258285 A, US 3258285A, US-A-3258285, US3258285 A, US3258285A
InventorsSmith Roy K
Original AssigneeSmith Roy K
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Door stop and holder
US 3258285 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

June 28, 1966 R. K. SMITH 3,258,285

DOOR STOP AND HOLDER Filed Oct. 1, 1964 2 Sheets-Sheet 1 lilw /'A i l l. 6- 6 l .lju.- 7A A su i ABM Z L 5F 5A` '.1 L

C 5 /-p 8A` 1 lr2 f 2A MAGNET Z el 4k f1 2f" f2'. 65g I C 6B y INVENTOR R0 Y K. S M/ Tl'/ June 28, 1966 R. K. sMm-l 3,258,285

DOOR STOP AND HOLDER Filed Oct. l, 1964 2 Sheets-Sheet 2 F/G. 2a

NVENTOR 2A HM F/ 6'. 2

ROY K. SMITH United States Patent O 3,258,285 DOOR STUP AND HOLDER Roy K. Smith, Box 111, Viewland Ave., R.D. 3, Schenectady, N.Y. Filed ct. 1, 1964, Ser. No. 400,715 8 Claims. (Cl. 292-2515) This invention relates to an apparatus using the magne-tic principle for stopping and holding a passageway door in a predetermined open position.

It is the purpose of this invention not only to stop a door but also to hold said door in an open position even when the opened door is in a drafty area without the use of bars, wedges or drop stops.

Another purpose of this invention is that it is adaptable and can be used `as a door latch were no lock is necessary.

Another purpose of this invention is by slight modifications of some parts it can be used in different positions and perform the same function.

Another purpose of this invention is to provide a superior, economical functional stop and holder that can be produced, packaged and sold at a cost comparative to and lower than most stops of different principles.

Still another purpose of this invention is that it can be installed and utilized conveniently in already hung doors as well as in new construction.

Still additional objects and benets rand advantages of this invention will become evident from a study of the following detailed descriptions taken in conjunction with the accompaning drawings.

The door holder and stop of the present invention cornprises one form in which an upwardly-biased slidable permanent magnet is disposed in the lower edge of la door and engages a second magnet located in the o-or when the door is in a desired position; and a second form in which a permanent magnet extends from a surface of a door and is adapted to engage and to be held against a second magnet mounted adjacent a wall.

FIGURE l shows ione embodiment of the device, in elevation and partial section, with the parts thereof mounted in a door and floor;

FIGURE 2 is a view similar to FIGURE 1 but showing only the movable magnet mounted in the door, as seen from the right of FIGURE l;

FIGURE 2a is a bottom View of the device of FIG- URE 2;

FIGURE 3 is a top view of a second embodiment of the invention, shown in partial section; and

FIGURE 4 is an elevation view of the device of FIG- URE 3, in partial section.

Referring specifically to FIGURES l, 2, and 2a of the drawing: part 1A is a non-magnetic metal tube Which tortns the housing for the other pants yof the slide magnet. At one end of part 1A a standard S.A.E. machine thread is turned toward the middle for at least 5%; of an inch, this is marked H-M on drawing. At a point from the end of the tube where the threads start toward the center an indenture marked Z on the drawing, is rolled so that a magnet part 2A will fit inside part 1A and not extend beyond the rim of part 1A marked H-M. At this threaded end four notches are cut into the rim edge marked Y on the drawing to form leverage points for adjustment. From the rim opposite the threaded end in toward the middle 3/16 of one inch tWo holes G are drilled, diameter of the holes %2 of an inch and on a line 180 degrees from each other.

Par-t 2A is a metal rod lof a diameter to it inside part 1A with a clearance of not more than a 1%;4 of one inch; magnetized on one end; opposite the magnetized end a hole 3732 of one inch is drilled and tapped with a standard fice 1A; of one inch S.A.E. machine thread; this is marked J on drawing and is for the purpose of lreceiving a part 5A.

Part 3A is a nod of the same diameter as part 2A and magnetized on one end; a hole ygg of an inch is drilled through the center; from the magnetized end this hole is countersunk to a depth to vaccommodate the head of a screw part 8A; this is marked K on drawing. On the magnetized end a rubber washer 1/s of an inch thick is cemented ont-o the dat surface of part 3A. This is marked F on drawing.

Part 4A is a llat piece of non-magnetic metal stamped out to the shape as shown in FIG. 2a and has two holes I of 5%32 of one inch and one hole of a diameter so that it can be tapped out with a standard S.A.E. machine thread to match H-M of part 1A. The holes marked I are countersunk so the heads of screw parts 8A will be below the surface of part 4A.

Part 5A is a standard threaded eye bolt of a diameter and thread to match threaded hole I in part 2A.

Part 6A is a split-end rivet of 1/8 of an inch diameter and of -a length to extend through part 1A so that the split end can be folded back against the outer surface of part 1A to keep it in place. At the middle of part 6A a hole of a diameter that will permit one end of a spring part 7A to pass through it is drilled. This is marked L on drawing.

Part 7A is la spring of a length and tensional strength that is suflicient when installed with parts 2A and 6A that it will hold part 2A in position in part 1A until it is over or opposite part 3A.

Part 8A is a standard 1d; of one inch by one inch selfthfreading screw of which three are needed, one through part 3A and two to mount part 4A on a door.

In the assembly of the device, Part 5A is threaded into section J of part 2A, then one end of part 7A is hooked into the eye of part 5A; these three parts Aare inserted into part 1A with the magnetized end of Part 2A facing out of the threaded end H-M. Part 6A is inserted into holes marked G in part 1A and the end parts of 6A are bent as shown in FIG. 1; the loose end of part 7A is threaded through hole marked L on part 6A; part 4A -is then turned on to part IA, HF over H-M so that the H-M section of part 1A extends beyondpart 4A so that part 1A can be turned for adjustment, at points Y.

To install a center line is drawn between the width of a door on the bottom edge close to the latch edge of said door. At a distance of not less than two inches in from the latch edge of said door a hole of a diameter to `accommodate the diameter of assembled parts and to the depth of the length of the assembled parts, a hole is bored up into the door bottom. The assembled parts are then inserted into the hole and a line is scribed around part 4A on the bottom :of the door; the assembled parts are then removed from the hole and the material inside the scribed line is removed to the depth of the thickness of part 4A; the assembled parts are then replaced into the hole and secured with the screws 8A, through holes I in part 4A. Part 1A is now adjusted so that it just clears the finish floor at all points.

At a point where the desired position of the opened door is wanted, the center of part 2A is marked on the nish floor and at this point a hole is bored into the door of Ia diameter of part 3A to a depth so that section F is ush with the -surface of the Afinish floor. Part 3A is then inserted into said hole and secured with the remaining screw, part 8A, through hole K. This completes the -assembly and installation of this form of the Door Stop and Holder.

Referring now specifically to this inventions function. When a door in which this invention is installed is opened so that part 2A is directly over or opposite part 3A the magnetic pull of both magnets pulls part 2A down on top of part 3A and holds the said door in this position until moved manually from said position, and as the door moves and separates part 2A from part 3A, part 7A pulls part 2A back up into part 1A giving free clearance or passage over the floor.

Referring now specically to FIGS. 3 and 4 the drawing; part 1B is a non-magnetic metal tube which forms the housing for a magnet part 2B and other parts. An indentation is rolled into part 1B at a distance from one end so that part 2B extends approximately 1/16 of one inch beyond the rim of part 1B, this is marked on drawing with the letter Z. In this section of part 1B two holes of /32 of an inch in diameter are drilled on a line, 180 degrees from each other, whose center is 7/16 of one inch from the rim, marked B on drawing. On the opposite end four points are ground into the rim at four equally distanced locations around the circumference of this rim. At this end a standard S.A.E. machine thread B-M to match the thread on a part 4B is tapped inside to a depth of at least 1A of one inch, marked B-F on drawing. The four points are marked A on drawing FIG. 3.

Part 2B is a metal rod of a diameter so that it fits snugly into the interior of part 1B; it is magnetized on one end, At a distance of `1/2 of one inch from the magnetized end is the center of a hole of a diameter of KrV32 of one inch is drilled through part 2B, marked C on drawing, This hole may or may not be tapped to receive a 5716 of an inch S.A.E. standard threaded bolt 6B from each side.

Part 3B is a metal rod of the same diameter as part ZB, at least 1/2 of an inch in length; and magnetized on one end. This part has a hole of a diameter of 532 of one inch drilled through from end to end. At the magnetized end this hole is countersunk to a depth to accommodate the head of a screw part 5B; lthis hole is marked E on drawing, On the opposite end from the magnetized end a distance is measured in so that an angle cut of ve degrees can be made across dividing part 3B into two parts; marked 3-B-1 and 3-B-2 on drawing. On the magnetized end an 1/s of an inch rubber washer is cemented to this flat surface; marked F on drawing. The purpose of this is to keep the sound of contact down to a minimum.

Part 4B is a threaded disc of a diameter to t into section B-F of part 1B; with a hole of a diameter drilled through its center and this hole is notched to receive a screw driver; this notch is used to turn this part into part 1B. This hole is marked D on drawing.

Part 5B is a self-threading screw, securing part 4B against the door, and is similar to the screw mounting part 3B.

Parts 6B are a V16 of one inch by 1A of one inch standard S.A.E. machine thread bolt with flat head slotted. Two are needed, for securing parts 1B and 2B together.

In assembling the device, part 4B is threaded into part 1B at section B-F until points A extend beyond the at surface of 4B, part 5B is inserted into hole D and these parts are fastened either to the door or baseboard, whichever the installer prefers. Part 2B is then inserted into interior of part 1B against the indentation so that holes B line up with holes C; parts 6B are then screwed into holes C holding part 2B rrn in part 1B. (Note part 6A can be used in place of parts 6B to cut cost of manufacture in lieu of neater looking exterior.) Sections A, the ground points, on part 1B serve to keep part 1B from turning by pressing into the surface on which it is installed. Part 3B icenter is lined up on the surface opposite assembled parts of 1B and 2Bs center; parts 3-B-1 and 3-B-2 being placed on this center are turned so that the angled surface between these two parts changes the angle of the surface of section F until it ts Hush with the surface of part 2B; holding this position part 3B is secured in place by screwing part 5B through hole marked E.

Having now assembled `and installed all parts of this form of the invention the door is merely opened until parts 2B and 3B contact. The door will stay in this position until moved by manual force.

While this invention has been described with particular reference to the construction shown in the drawing and while various changes may be made in the detail construction, it should be understood that such changes shall be within the spirit and scope of the present invention as defined by the appending claims.

Having thus completely and fully `described this invention, what is now claimed as new and desired to be -protected by Letters Patent is:

1. A magnetic holder adapted to be secured to a closure for holding the closure in an open position, comprising; a non-magnetic tubular housing member, a mounting member in threaded engagement at one end of said housing, fastening means for securing said mounting member on such closure, a permanent magnet slideably positioned in one end of said housing and spring-biased inwardly against indented stop means in said housing, said magnet being moveable outwardly of said housing for coaction with a keeper, mounted for engagement by said magnet.

2. A holder as dened in claim 1 wherein a tension spring biases said magnet in said housing.

3. A holder as defined in claim 1 wherein said fastening means comprises at least one headed screw.

4. A holder as dened in claim 1 wherein said mounting member is shaped to engage the lower edge of the closure, with said housing vertically oriented in the closure so that said magnet may coact with a keeper mounted in a oor or surface adjacent the closure.

5. A magnetic holder adapted to be secured to a closure for holding the closure in an open position, comprising; a non-magnetic tubular housing member, a mounting member in threaded engagement in one end of said housing, a fastening member extending through said mounting member for securing said mounting member on such closure, a permanent magnet in the other end of said housing and extending therefrom for coaction with a keeper mounted for engagement by said magnet, and releaseable means securing said magnet in said housing.

6. A holder as dened in claim 5 wherein said fastening member comprises a headed screw.

7. A holder as defined in claim 5 wherein said releaseable means comprises at least one headed screw.

8. A holder as defined in claim 5 wherein said housing is indented to provide a stop means for positioning said magnet during assembly.

References Cited by the Examiner UNITED STATES PATENTS 2,109,127 2/ 1938 Ca-rlson.

2,496,691 2/1950 Berry 292-2515 2,497,697 2/1950 Smith 292-2515 X 2,519,435 8/1950 Byrd 292-2515 2,584,480 2/1952 Manting 292-2515 2,786,702 3/1957 Teetor 292-2515 2,815,236 12/1957 Lowinski 292-2515 2,853,331 9/1958 Teetor 292-2515 BOBBY R. GAY, Primary Examiner.

R. E. MOORE, Assistant Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2109127 *Jun 8, 1937Feb 22, 1938Otto E CarlsonDoor stop
US2496691 *Jun 19, 1948Feb 7, 1950Harold H PelzerDoorstop and holder
US2497697 *Sep 8, 1947Feb 14, 1950Merrill H SmithDoorstop
US2519435 *Aug 21, 1946Aug 22, 1950Jr William ByrdHolding device
US2584480 *Dec 9, 1950Feb 5, 1952Denham Mfg CompanyMagnetic latch for doors
US2786702 *Feb 23, 1954Mar 26, 1957Teetor Macy OMagnetic catch
US2815236 *Feb 18, 1955Dec 3, 1957Walter J LowinskiDoor stop
US2853331 *Dec 23, 1953Sep 23, 1958Teetor Macy OMagnetic catch
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3791687 *Jun 19, 1972Feb 12, 1974H SchroederPop up magnetic door stop and holder
US5082317 *Feb 20, 1991Jan 21, 1992Delaney Jr Robert GSelf-adjusting door stop and catch
US5371906 *Aug 24, 1993Dec 13, 1994Tzang; Tzong-PayToilet seat ring automatic raising structure using magnets
US5394570 *Jan 7, 1994Mar 7, 1995Tzang; Tzong P.Toilet seat ring automatic raising apparatus as electromagnetically actuated
US5758913 *Feb 20, 1996Jun 2, 1998Securitron Magnalock Corp.Impact resistant electromagnetic lock
US5887917 *May 4, 1998Mar 30, 1999Luciana; Wilson C.Magnetic doorstop
US5944368 *Jun 12, 1997Aug 31, 1999Hastings; Mark S.Door knob holding device
US6609738Oct 26, 1999Aug 26, 2003Securitron Magnalock Corp.Electromagnetic door lock system
US7367596 *Jan 6, 2006May 6, 2008Chi Pang LeungGround lock fitting
US7845049Dec 28, 2007Dec 7, 2010Nissan North America, Inc.Door assembly for motor vehicle having magnetized door bumper and methods for making same
US8864188May 20, 2009Oct 21, 2014Roderick Nigel RedgraveClosure mechanism
US20140084119 *Sep 25, 2012Mar 27, 2014The Young Engineers, Inc.Magnetic Mount
CN1948682BOct 10, 2005Nov 17, 2010梁志鹏Flow lock construction element
WO1996006558A1 *Sep 1, 1994Mar 7, 1996Franklin T KitAn automatic raising toilet seat
WO2009142513A1 *May 20, 2009Nov 26, 2009Roderick Nigel RedgraveA closure mechanism
U.S. Classification292/251.5
International ClassificationE05C17/00, E05C17/56
Cooperative ClassificationE05C17/56
European ClassificationE05C17/56