US2551032A - Balanced door mechanism - Google Patents

Balanced door mechanism Download PDF

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Publication number
US2551032A
US2551032A US747391A US74739147A US2551032A US 2551032 A US2551032 A US 2551032A US 747391 A US747391 A US 747391A US 74739147 A US74739147 A US 74739147A US 2551032 A US2551032 A US 2551032A
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Prior art keywords
door
jamb
pulleys
pulley
weight
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Expired - Lifetime
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US747391A
Inventor
Charles D Mcdonald
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GLENDORA Manufacturing Co
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GLENDORA Manufacturing Co
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Priority to US747391A priority Critical patent/US2551032A/en
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D15/00—Suspension arrangements for wings
    • E05D15/56—Suspension arrangements for wings with successive different movements
    • E05D15/58—Suspension arrangements for wings with successive different movements with both swinging and sliding movements
    • E05D15/582—Suspension arrangements for wings with successive different movements with both swinging and sliding movements with horizontal swinging axis
    • E05D15/583—Suspension arrangements for wings with successive different movements with both swinging and sliding movements with horizontal swinging axis specially adapted for overhead wings
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/02—Closers or openers for wings, not otherwise provided for in this subclass gravity-actuated, e.g. by use of counterweights
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2186—Gear casings

Definitions

  • This ⁇ invention is: an .improved lmechanismgof automatic doorA apparatus of the kind shown .in
  • This-door structure involves a door, such as .for
  • the invention resides in certain advancements in this art asf:settforthxinthe'ensuing disclosure and has, with the above, additional objects and advantages as will be made manifesti-in theiollowing description of the construction, combinations and means, and details'thereof, and of the manner of operation relative to the 'herewith illustration embodiment; 'it:beingunderstood-that e modifications, variations and adaptations Vmay be resorted to ⁇ Within .the-scope,fispirit andiprincples -off the invention as it risa.rclaimed in lconclusion 'f hereof.
  • Tofmotivate theldoor automaticallyfin upward movement by lwayrof the l-trunnion slides l1---1 a ⁇ #motori device-is hitchedfto the slides ⁇ in afdirect mannen to ifooncurrently ap-ply as. vsubstantially :eguali lifting '.momentftoithe slides.
  • the combined weight of the equal weights la: and 8:1: is somewhat more than that of the door 2 and its slides 1-1 and other attachments, so that if the door is free to rise the force of gravity on the weights will act equally on the slide cables I [la and
  • the constant effort of the weights presses a roller 20, mounted onthe top of the door, up against a fixed overhanging track 2
  • a feature of the instant embodiment of the in ⁇ vention resides in a double function, elongate tensionable elastic inthe form of a helical spring 22, Fig. 3, one end of which is hitched pivotally at 22 to the track block 2lb and the other end or" which is hitched at 22x to the door at a point on its back face and desirably below the top edge of the door whose bottom is normally locked by a releasable latch 22a? of suitable type and thus Ystops the top of the door from being tilted inward a-bout the trunnions 9 of the slides l, by the spring 2l.
  • the spring is put under enough tension to instantly initiate inward tilt of the door top vjust as soon as the latch 22:1: releases the bottom of the door so that it, the door, can tilt.
  • the second function of the starting spring 22 is to check or snub the top edge of the door as it approaches the full open, horizontal position, dotted lines, Fig. 3; the length and position of hitch of the spring ends being such that as the inner, top end of the door approaches a safety stop 23 the spring loops around the door edge and forms a tensioned bridle bringing the door motion' to a gradual stop. Conversely, the tensioned, looped spring 22 will aid in starting the door bodily back to the closed position-to overcome its inertia.
  • each of these weight pulleys is mounted in its own casing 25 which is constructed so as to be readily solidly hitched to or easily disconnected from a respective casing 26 in which say the pulley [0b (or lb) of a tandem pair is journalled, as also is the respective smaller synchronizing cable pulleys, as I l and I6 (for the left jamb) or thev smaller pulleys l2 and l5, of the right jamb assembly as clearly shown in Fig. 2.
  • the said casing 25 is provided with a wallhook part 25o adapted to be'easily hooked onto a cross stay 26s iu the lower corner ofthe casing 26 as the casing 25 is telescoped for rm intert in its respective casing 2t; the combined casings constituting a housing or box for the full set of pulleys for either the left or the right jamb cable hook-up; that is, the pulley boxes are duplicate for right or left installation. If a weight 'lx (811:) is to be hung remotely from its respective door edge, then the respective casing 25 is unhooked from its respective, jamb position casing 26 and mounted in a convenient position vertically over its weight, at the remote place.
  • the separated casings 25 and 26, with other structural elements such as the jambs and attachments are all adapted to be packed for shipment and storage in the empty cans lsv- 3:13, for economical packaging and transportation.
  • the pulleys I3 and il are mounted in respective brackets lla, Fig. 6, which are adapted to be set in one or another of selective grooves 1lb provided at diferent heights in the walls of the jamb slots ⁇ 30a.
  • Means are provided to yieldably arrest the door 2 as it comes into a vertical or closed position in the doorway, and to hold it at proper position for reception of the automatic latch 22x.
  • the track block 2lb is adjustable to desired position on the track 2
  • a housing for a system of wheel devices including a pair of assembly boxes each composed of parallel side walls xed together by cross-fasteners and each being open from end to end for clearance of parts of the devices operative therein; the said boxes having mutually intertelescoping vertical, contiguous ends which nt from top to bottom for stabilization when installed in close assembled relation.
  • one of the boxes has indentations in the bottom edges of its side walls and which are adapted to hook onto an adjacent one of said fasteners.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Description

May l, 1951 c. D. MCDONALD RALANCED DooR MEcHANlsM 2 Sheefs-Sheet l Filed May 12, 1947 www May 1, 1951 c. D. MCDONALD BALANcEn DooRy nEcHANISu 2 Smets-Sheet 2 Filed May 12. 194'? ,fa/nsw ro n, G? f Patented May 1, 1951 UNITED @STATES fo-Enos EALANCEDnoonMEoHnNIsM Charles: D.: McDonald, (Eilendorap Galifs-iassgnor f .to Glendora @Manufactuxtigngfompnyf Blendora, ,.Galif.,A a. .corporationaofs Ealilfornia Application May 4'12, 1947, Serial No. 747,391
l 2 Claims.
This `invention is: an .improved lmechanismgof automatic doorA apparatus of the kind shown .in
.my fcopending: 'application Ser. lNo. 7 16,013,."now Pa-tenti No: :2,5125864, and rothers: I'have''led.
This-door structure involves a door, such as .for
ygarages,.which -is suspended in a` slightlytoverbalanced @manner so that it will-automatically @risefrorny a -verticalgfclosed position.L to a nearly horizontal, over 4head position,A and :can be. easily drawn down-to the closed. posi-tion :at will.
Itfis aniobject-of'the instant invention-to. pro- VVvidea novellsystem 4otlpulley-sets-:to #facilitate the suspension oithegiven door in itsdoor-way :frame and provide for the ready installation of acounter Weight anditsrespective pulleydevice either `immediately fina jamb-fwell and header, or'at a ldesiredposition -remote v from the ydoor .jamb 'as k-n1 a3,'1-be necessary Yinlnumerous cases of door installation. And `inthis connection it" is an` object7 to .1;1rovide an overhead, pulley` -box I' structure ofi sectional :embodiment including" complemenf -tary -casings adapted to` -be l'-iirrnly interconnected i.' in compact.. association. for use Whenifthe Weight AWell-is r'closeto or :in the-jambor maybe distally 1 mounted;` the separate icasings being? -designed 'to be compactly packed, when knocked downyina can which, when loaded withsand or other suitv i able material, -con'stitutes -av poise ifoi'f lifting i the door (two of said cansbeing'-usediinfcombination f. forv the lifting purpose) A further 'obj ect of itheinvention is tol vprovide a simple, practical.` and v"effective means having the Vdual vfunctions"of giving the'clos'eddoor; when unlockedwan initial,r inward/openingl pullv at its :topwhileitvis .at the `same time automatically raised. by the connected fpoise .meansithe'sand f. :.cans) .and ofV back -snubbing the .inner end of .the; nearlyhorizontal orI lifted door as it reaches ritsfullysopen position,4 and .whichsnubbi-ng leffect constitutes .a .favore'orcef when the Araised-"Cloer is being again and manually pulled to its closed, vertical position.
The invention resides in certain advancements in this art asf:settforthxinthe'ensuing disclosure and has, with the above, additional objects and advantages as will be made manifesti-in theiollowing description of the construction, combinations and means, and details'thereof, and of the manner of operation relative to the 'herewith illustration embodiment; 'it:beingunderstood-that e modifications, variations and adaptations Vmay be resorted to` Within .the-scope,fispirit andiprincples -off the invention as it risa.rclaimed in lconclusion 'f hereof.
.iFigure..l;isafront.,elevatiornand partial section iof; the (brokenaway).v door and its-doorway and' .controlmechanism Fig-uref'fzais a pla-nini fthe.. pulley. .andascableimecharsm.whose I. well W.
f ure 6` kis detail viewiii-:elevation: of: the. f'a'djustvfablepulley bracket.
Herein is shownv the left1 hand1sidefportioniof .za garage .door 2` inountedi-for bodily vertical :and 15.
. tilting#movement` :between right ihandaand A:left hand jambs, only onefofw'which is'shown at? 3, -liav-ing.airconnectingheader 5 along which'the "top of. ithe vertical, closed ,doorstopsg Eachf jamb a' has aver-tical guideslot 3a, Fig. 5; and, generally,
outwardly of Saidf'slotfzthe' jamb' has ai weight As fthe `iambs are fsubstan'atiallyduplicate,l de- 4fsc'riptionaof one'will suilice forboth. :In each'slot 3a1is.arelative, verticalslidel which has atrun- L niorr i Si mounted in ythe verticalv adjacent Uedge of :fthe s100112; thezaxis ofthe trunnion being lsome- ;:what above'. the Ihorizontal lcenter vline of the door alsothat-the .lower part of the door (below theline of the trunnionaxis) l slightly r over weighs the .doorpartabovei the axis thereby'causing the bot- -tom end ofthe; door to constantly tend to tip down on the supporting trunnions. 'Other bal- L ancingmeansnmay be-provided From slide 1 a cable il! rises 1to a pulley l I and 'I.thencealongthe header" 5Lto a pulley |2- above the @not shown) fright hand jamb andv then down :itc ainxedsaxis pulley-43 yand around it up `tothe bottomfoffthe right hand slide'l,4` Fig. 1. It will f lbe'- seenthat: when "the rslides 1-1 rise "in synchronizationthe cablel0 from the left hand side pays `outvto the .pulley i3rso that the connected .ncablefi goesfuprwith"the'right hand slide 1.
f ilnlthesame manner of hook-up a vcablell pays -outfrorri'the'right hand slide 1 to a header pul- ,sleylizlandrthence to a'distal pulley |16 at the `top fz'ofz the'left jamb 13 andthen down -in a" bight around a plley" Ilfand upto'thefl'eft'slide 1. "-'Thus''the slides are riein'ed' for 'synchronous actionsgrgoingfup orrfgoing down las the door trunn-ions :rise .or descend.
Tofmotivate :theldoor automaticallyfin upward movement by lwayrof the l-trunnion slides l1---1 a `#motori device-is hitchedfto the slides `in afdirect mannen to ifooncurrently ap-ply as. vsubstantially :eguali lifting '.momentftoithe slides. Gravityeis Directly 'whitcheditol the' slide sls'o'f#theileftfijambis aip'ower rica-ble iarwhich 4*rises ftorahtandem pairf Lofguide pulleys Mib-#| and directly connects to a suitable weight such as a sand loaded can 1a: vertically movable in the well W at jamb 3. In a like manner a cable Mx in a well at the right jamb connects with the top of a weight Bm and extends up to and from a pulley 14h of a tandem :pair and connects to the top of the respective right jamb slide 1. The combined weight of the equal weights la: and 8:1: is somewhat more than that of the door 2 and its slides 1-1 and other attachments, so that if the door is free to rise the force of gravity on the weights will act equally on the slide cables I [la and |411: and lift the door to overhead position.
The constant effort of the weights presses a roller 20, mounted onthe top of the door, up against a fixed overhanging track 2| extending inward from the header 5 and reacting to cause Vthetop of the door to take a horizontal path to full open, nearly horizontal position under the header.
A feature of the instant embodiment of the in` vention resides in a double function, elongate tensionable elastic inthe form of a helical spring 22, Fig. 3, one end of which is hitched pivotally at 22 to the track block 2lb and the other end or" which is hitched at 22x to the door at a point on its back face and desirably below the top edge of the door whose bottom is normally locked by a releasable latch 22a? of suitable type and thus Ystops the top of the door from being tilted inward a-bout the trunnions 9 of the slides l, by the spring 2l. As the door moves to vertical or closed position the spring is put under enough tension to instantly initiate inward tilt of the door top vjust as soon as the latch 22:1: releases the bottom of the door so that it, the door, can tilt.
The second function of the starting spring 22 is to check or snub the top edge of the door as it approaches the full open, horizontal position, dotted lines, Fig. 3; the length and position of hitch of the spring ends being such that as the inner, top end of the door approaches a safety stop 23 the spring loops around the door edge and forms a tensioned bridle bringing the door motion' to a gradual stop. Conversely, the tensioned, looped spring 22 will aid in starting the door bodily back to the closed position-to overcome its inertia.
The operation of the door and its weights is obvious from the above.
It frequently happens that it will be desirable to mount the weights, or either of them, in a more convenient location than in or close to the jambs of the given doorway frame but still retain the pulleys to which the synchronizing and weight cables rise directly from the slides 1.-'1; these pulleys being marked lllb and IIb being coordinate to respective tandem pulleys Ib and |411. To facilitate the installation of the outer pulleys |00 and llib, or either of them, at a position remote from the door jambs and at which the Weights 'ix-8:6 are to be suspended from said pulleys, each of these weight pulleys is mounted in its own casing 25 which is constructed so as to be readily solidly hitched to or easily disconnected from a respective casing 26 in which say the pulley [0b (or lb) of a tandem pair is journalled, as also is the respective smaller synchronizing cable pulleys, as I l and I6 (for the left jamb) or thev smaller pulleys l2 and l5, of the right jamb assembly as clearly shown in Fig. 2. The said casing 25 is provided with a wallhook part 25o adapted to be'easily hooked onto a cross stay 26s iu the lower corner ofthe casing 26 as the casing 25 is telescoped for rm intert in its respective casing 2t; the combined casings constituting a housing or box for the full set of pulleys for either the left or the right jamb cable hook-up; that is, the pulley boxes are duplicate for right or left installation. If a weight 'lx (811:) is to be hung remotely from its respective door edge, then the respective casing 25 is unhooked from its respective, jamb position casing 26 and mounted in a convenient position vertically over its weight, at the remote place.
The separated casings 25 and 26, with other structural elements such as the jambs and attachments are all adapted to be packed for shipment and storage in the empty cans lsv- 3:13, for economical packaging and transportation.
Door opening and closing means are set forth in the previously mentioned application, and of which cable 45 herein is only a part.
When the dissembled parts are knocked down for packing in the empty cans lx and 8a: cable attaching bars Si) at the tops of the cans are freed from their fastening screws 3l and removed to clear the open tops of the cans.
To provide for reasonable change of bightlengths in the cables l0 and It as the doors are installed, the pulleys I3 and il are mounted in respective brackets lla, Fig. 6, which are adapted to be set in one or another of selective grooves 1lb provided at diferent heights in the walls of the jamb slots `30a.
Means are provided to yieldably arrest the door 2 as it comes into a vertical or closed position in the doorway, and to hold it at proper position for reception of the automatic latch 22x. On the cable 19a, Fig. l, is an adjustable bumper 33, which, as the door drops to closed position, will engage a cushion 34 fixed to the adjacent bottom face of the frame header and thereby stop the door and suspended weights with a gentle action.
The track block 2lb is adjustable to desired position on the track 2| to suitably tension the booster spring 22.
What is claimed is:
1. A housing for a system of wheel devices and including a pair of assembly boxes each composed of parallel side walls xed together by cross-fasteners and each being open from end to end for clearance of parts of the devices operative therein; the said boxes having mutually intertelescoping vertical, contiguous ends which nt from top to bottom for stabilization when installed in close assembled relation.
2. The structure of claim 1, and in which one of the boxes has indentations in the bottom edges of its side walls and which are adapted to hook onto an adjacent one of said fasteners.
CHARLES D. MCDONALD.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 631,529 McSherry Aug. 22, 1899 962,404 Ogden June 21, 1910 1,191,929 Prescott July 18, 1916 1,649,861 Schneider Nov. 22, 1927 1,951,059 Luton Mar. 13, 1934 2,153,359 Anderson April 4, 1939 2,294,851 Owen Sept. 1, 1942 2,369,141 Ferris et al Feb. 13, 1945 2,512,804 McDonald June 27, 1950
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4357732A (en) * 1979-12-10 1982-11-09 Hickman David H Automatic door closer kit
US6142260A (en) * 1997-08-19 2000-11-07 Lg Industrial Systems Co. Ltd. Apparatus for closing hatch doors of an elevator
US20080007148A1 (en) * 2005-04-20 2008-01-10 Trulaske Steven L Self-closing sliding door assembly

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US631529A (en) * 1898-11-14 1899-08-22 Charles Mcsherry Metal window sash and frame.
US962404A (en) * 1909-11-12 1910-06-21 Fredric D Ogden Door and means for operating the same.
US1191929A (en) * 1916-02-21 1916-07-18 George H Frothingham Company Two-lift door.
US1649861A (en) * 1925-06-15 1927-11-22 Christian L Schneider Sash-weight support
US1951059A (en) * 1932-01-26 1934-03-13 Luton John Sash pulley
US2153359A (en) * 1938-04-01 1939-04-04 Gen Electric Air flow control apparatus
US2294851A (en) * 1940-07-02 1942-09-01 Pittsburgh Plate Glass Co Window attachment
US2369141A (en) * 1939-07-31 1945-02-13 Frantz Mfg Co Garage door
US2512804A (en) * 1946-12-13 1950-06-27 Glendora Mfg Company Door locking latch mechanism

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US631529A (en) * 1898-11-14 1899-08-22 Charles Mcsherry Metal window sash and frame.
US962404A (en) * 1909-11-12 1910-06-21 Fredric D Ogden Door and means for operating the same.
US1191929A (en) * 1916-02-21 1916-07-18 George H Frothingham Company Two-lift door.
US1649861A (en) * 1925-06-15 1927-11-22 Christian L Schneider Sash-weight support
US1951059A (en) * 1932-01-26 1934-03-13 Luton John Sash pulley
US2153359A (en) * 1938-04-01 1939-04-04 Gen Electric Air flow control apparatus
US2369141A (en) * 1939-07-31 1945-02-13 Frantz Mfg Co Garage door
US2294851A (en) * 1940-07-02 1942-09-01 Pittsburgh Plate Glass Co Window attachment
US2512804A (en) * 1946-12-13 1950-06-27 Glendora Mfg Company Door locking latch mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4357732A (en) * 1979-12-10 1982-11-09 Hickman David H Automatic door closer kit
US6142260A (en) * 1997-08-19 2000-11-07 Lg Industrial Systems Co. Ltd. Apparatus for closing hatch doors of an elevator
US20080007148A1 (en) * 2005-04-20 2008-01-10 Trulaske Steven L Self-closing sliding door assembly
US7686405B2 (en) 2005-04-20 2010-03-30 True Manufacturing Co., Inc. Self-closing sliding door assembly

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