US2607586A - Vertically reciprocating door installation and operating means - Google Patents

Description

3 Sheets-Sheet 1 79 A va-E C. E. SCHLYTERN VERTICALLY RECIPROCATING DOOR INSTALLATION AND OPERATING MEANS 7 Filed March 21, 1947 M. mm mm E a MS m w H m 7 .H m 0 ATTORNEY Aug. 19, 1952 c. E. SCHLYTERN VERTICALLY RECIPROCATING DOOR INSTALLATION AND OPERATING MEANS Filed March 21, 1947 3 Sheets-Sheet 2 INVENTOR CHARLES E. ScHL rz'zzmv BY 3709M ATTO R N EY 19, 1952 c. E. SCHLYTERN VERTICALLY RECIPRQCATING DOOR INSTALLATION I AND OPERATING MEANS Filed March 21, 1947 s Sheets-Sheet s INVENTOR C2111 um E. ScHLYrERu ATTORN EY Patented Aug. 19, 1952 UNITED STATES :FFICE VERTICALLY RECIPROCATIN G DOOR IN- STALLATION AND OPERATING MEANS My invention pertains to electrical motorized or power driven operating means and more especially to a system for operating a member, such as an upward acting door for example, which is to be moved back and forth at Will and to various subcombinations of such a system, as well as elements, per se.

It is an object of my invention to provide an improved electric power operated system for moving a member, such as a door for example, back and forth between two extreme positions, which is especially convenient to install, operate and maintain, and which is reliable in operation.

It is a further object of my invention to provide such a motorized system which is especially advantageous for operating upward acting doors.

It is also an object of my invention to provide an improved compact electric operator pack of an electric motor and controls in a unit which is especially convenient to install and wire. This invention is claimed in my copending divisional application Serial No. 49,250 iiled September M, 1948.

Another object of my invention is to provide an improved cable and cable sheave combination which is advantageousfor use. in operator systems.

A further object of my invention is to provide an improved sheave.

Further objects and advantages are with-in the scope of my invention, such as relate to the arrangement, operation and function of the related elements of the structure, to various details of the construction and to combinations of parts, elements per se, and to economies of manufactureand numerous other features as. will be apparent from a consideration of the specification in conjunction with the drawings disclosing specific embodiments of the invention, in which:

Fig. 1 is an elevational view showing the rear or inside of an upward acting door arranged for power operation in accordance with the invention; 7

Fig. 2 is a sectional view taken on line 2-2 of Fig. 1;

Fig. 3 is a side elevational view showing the power and control unit;

Fig. 4 is an elevational view showing the inner side or garage side of the power unit;

Fig. 5 is a bottom view of the power unit;

Fig. 6 is a plan view of the-control supporting bracket; 3

Fig. '7 is a plan view of the socket plate;

Fig. 8 is a diagram for illustrating the operation of the reversing switch by the down limit stop on the door;

Fig. 9 is a diagram showing operation of the reversing switch by the up limit stop from the cable;

Fig. 10 is a schematic view representing the 4 Claims. (Cl. 268959) 2 door balancing and operatingspring'and cable system; a

Fig. 11 is a side elevational improved cable sheave;

Fig. 12 is a cross-'sectional view on line 2- -12 of Fig. 11; v

Fig. 13 is adiagrammatic view illustrating-the operation of the special cable insuch a sheave;

Fig. 14 is an enlarged fragmentary view showing the lock and the electromagnetically movable lock strike;

Fig. 15'is a cross-sectional view on :line 55-15 in Fig. 14; and

Fig. 16 is a Wiring diagram schematically representing the electrical circuits and. control means for operating the motor,'the electric light and the lockstrike.

Referring more specifically to .Figs. 1 and 2 I have illustratively disclosed a Wall II having a doorway l3 closed by an overhead door .15, which may be of. any conventional construction'comprising a plurality of door sections. 15 each extending horizontally across the doorway and hinged together in the usual vertical edge-toedge relation. As usual in such installations, guide tracks' I? are provided. extending on both sides of the doorway for receiving guides or rollers 19 extending from the edges of the door, to guide orchange the direction of movement of View showing 'my the door in its up or down .movements, and if there is not suificient overhead space to receive the door in its uppermost or open position, it is common to curve the guide tracks in toward a horizontal position supported by hanger brackets 20 fromthe permanent building structure, as shown.

To provide well balanced easy operation of the door evenly at both sides,.in accordance with my invention, a cross-shaft 2I is provided extending across over the doorwayand rotatively supported in two bearing brackets 23 which may be mounted on the horizontal track braces 25, or on the building structure. The shaft'carries two cable sheaves 21 secured firmly thereon, as by set screws 29 or by keys if preferred, and disposed adjacent the ends of the shaft and over the side edges of the door for passing cables 3| extending thereover and down-t0 the bottom of the door where the ends of the cables are anchored by securing around holds 33 on the door. Fig. '10 also diagrammatically illustrates the cable arrangement.

From'the cable sheaves 21 on the ends of the shaft the cables 3! pass through floating sheaves 35 and then return to have the other ends anchored' in the horizontal track braces 25, or on the building structure. The two floating spring sheaves35 are attached .to one end of twocounterbalance springs 31, the other ends of which are anchored into the track hangers 2B, or to .provided with holes 55 for the screws 41.

straight upward or turns up on the horizontal overhead portions of the tracks, as shown, the

tension cases on the springs but as the door descends to closed position the tension of the springs increases and supports the door weight.

For operating the door, I provide a compact operator pack or power unit comprising a conventional geared electric motor M having a housing 4| on one end enclosing a speed reducing worm gear transmission, on which I .provide a drive shaft 43 extending to both sides for convenient coupling, as by a loose coupler 44, to the door shaft 2| from either the right-hand or the left-hand side of the door.

As Figs. 3 and 4 show more clearly, on the opposite end of such a motor I install a second housing 45 which is secured by screws 41 to a bracket 49, of a generally U-shaped cross-section, and the upper ends of the side-walls of this bracket are secured to the adjacent end bell of the motor, as by screws 5|. This bracket is seen in side elevation in Fig. 4 and edge or end elevation in Fig. 3. Fig. 6 shows a plan view of the bracket, where it is seen that the four outer corners of the side-walls are provided with holes 53 for receiving the motor attachment screws 5|, and the lower yoke portion of the bracket is In the center of the lower yoke of this bracket a hole 51 is provided for receiving the mounting bushing to mount a conventional panel type toggle switch 59 held in the bracket by the usual panel nut 50 with the toggle lever and terminal ball 50' projecting externally. Between the lower end or yoke of the bracket 49 and. the lower end of the housing 4|, a socket plate 6| is preferably provided. This socket plate 6| is seen in plan view in Fig. 7 and the edge may be seen in Figs. 3 and 4, and the dotted outline is shown in Fig. 5. This socket plate 6| and the end of the housing 4| are of course provided with holes 55' corresponding to the holes 55 in the bracket, as well as a central aperture 51' corresponding to the hole 51 for mounting the snap switch therein. Conventional electric sockets '63 are mounted in and through the end wall of the housing 4| in outwardly opening relation for receiving a fuse 65 and an electric incandescent lamp 6'! to be connected into the control circuits, in a manner to be subsequently described. The socket plate 6| has suitable apertures 69 for passing the conventional electric sockets therethrough, the end wall of the housing is provided with similar apertures, and openings H are out out of the sidewalls of the bracket to accommodate the sides of these sockets. Mounted .upon one of the side-walls of the bracket 49 is an initiation or sequence relay R. The structure and operations of the switch and the relay will be subsequently described in detail, with reference to the wiring diagram Fig. 16.

A look 13 is secured and carried on the-rear or inner side of one of the door section panels IS with its bolt 75 projecting to one side suitably to engage the inclined surface or Cam 1'! on a lock strike 19, as may be seen in Figs. 1, 2, l4 and 15. This arrangement is such that, as the door descends, the lock bolt 15 is depressed by the inclined cam surface if! of the lock strike and then the lock bolt snaps out under the lock str k as shown in Figs. 1, 14 and 15, to hold the door locked down in a closed position. A key hole 19 (shown dotted) is provided through the door panel l5 and also the block 8| whereon the lock is mounted so that it can be conveniently controlled by an authorized person on the outside, and of course it may be controlled from the inside by the conventional knob 83. The lock 13 may be any conventional cylinder and latch type of lock.

So that the door may be automatically unlocked when the electric motor is energized to open the door, I support the lock strike 19 movably for control by a solenoid or electromagnet 85, which is connected by wires 86 to be energized when the motor is energized, as will be subsequently described. For this purpose, the lock strike 19 may be pivotally mounted on a pivot pin 81 which is supported in a stationary plate 89 secured to the wall or door casing, as by screws 9|. The relation of the movable and the stationary parts of the lock strike are much like the two parts of a door hinge, except that a portion of the stationary plate 89 is bent away from the building structure to extend alongside the guide track IT, and the movable part 19 of the lock strike is bent to curve around the guide rail IT, as may be seen in Figs. 14 and 15, with a portion 93 projecting to the other side of the pivot pin to be attracted as an armature by the electromagnet 85, to swing the cam and lock strike surface 11 back to the unlocked position, shown by dotted lines in Fig. 15. A spring 95 is provided curled around the mid-portion of the pivot pin 87. One end of this spring reacts against the stationary part of the lock strike so that the other end of the spring normally biases the movable part of the lock strike to the locking position, shown in full lines in Fig. 15.

Figs. 11 and 12 show my improved sheave, for.

use in such systems, comprising a. hub 9'! of tubular stock and two side sheave members 99 which are centrally apertured for fitting upon the hub. The central portionsof the sheave side members are flat and disc-like to fit snugly together in side-by-side relation, and the outer marginal portions are relatively dished or inclined. The sheave side members 99 are assembled on the hub with the dished margins diverging or spreading apart to provide an annular cable receiving groove opening outwardly around the sheave. The hub may be conveniently made of tubular stock and the sheave side members may be stamped out of sheet metal of suitable gauge.

The sheave side members are conveniently secured t0 the hub, as by welding, and may also be secured together, as by spot welding between the flat central portions. Ihe hub may be drilled and threaded for receiving the set screw or pin 29. 7

I have found that by utilizing in such a system and with such sheaves, a soft steel cable of the type having a cotton center, especially advantageous results are obtained. The frictional drive contact in the V-sheaves is dependent upon the soft steel cables deforming to bottom in the sheaves, as represented in Fig. 13, from the equal load implied by the door and the reacting force of the springs. Any unbalance of these normally equal loads would prevent the cable from bottoming in the sheaves thus providing slippage, which is an important safety factor.

Fig. 16 diagrammatically represents the connection of the electric motor M into a system With the service lines for 'energization and operationrthroughthe; control devices. previously ".described'." The reversing: ;sw;itc1r=:-.59 is a conven: tional 3-pole rdouble. ;thro.w-.,switch ahavingthrefi blades? tied together to .move :either.,;to ,ithe' nigh hand side to operativelyi en ageiazcorrespondins set;- of three stationary:'contaots- :or? .to the lefthand side-(to engage anotherrset ,o-f three-station: ary contacts. 1 From. ithe: upper .andithezmiddle blades of the-reversing Switch 159'; wires. LOI Jfand I 03 respectively. extend. to I the terminals :of one-of the windings M Iiof ,themotorfi' Theubottom blade of the: reversing switclrfi 9:. is connected; b a. wire Il151to vone:.terrni'nal-.oi 1 the: other winding 1M2; of the; motor, sand the: other terminal oiithis wind? ing is connected by ar-wire: lfllttoithe upperrighthand stationary contact, and. ironr whence I a wire I99 connects-to .the center.leftehand-rcontact of this switch";Fromthebottom .blade ofthe..re-. versing switch; ,a' wire connects to: the. u-pperiletthand'iand also tozthecentralright-'hand contacts; although" thiszmayrloe' all. accomplishedrbyz means of the ,singlerwire. .I 05 extending.;;trom athis'. blade to the motor. Fromuthe-.lowerrightdiahd contact o-fLthe reversing switch a wire III connects to the right-hand stationary contact of the initiating relay Rand a wire II3 connects from the left-hand stationary contact of this relay to the left-hand lower contact of the. reversing switch.

The initiating or sequence relay R has a single movable blade I I5 which is moved to engagerilrst one 'and then; the other one of, two sta onary contacts by thesuccessive energization .0 pinsing 10f a winding'I II- in-a manner,commonwith such relays;- as-by meansoftlieiwell knofwhpawl and ratchet arrangement Inoti shown)..j= movable blade-1 I5-is connectedj by a wire "I I19to one' el d o'f-the coil I-II; wherel also is connected one-endc'f the service line L2. Ero-m th' vother terminalofthe relay windingfII'I a wire .I2I connects the ones-ideof a-pushfibutton I23ior-any other=suitable actuating means. ".The other. line conductor LI connects-tooneiendgof the Iuse65 (by-connectiontoone side "off the fuse; soclcet) from the other'end of which a'wii're I25'rconnoots to the' center"left-hand stationary contaotof the reversing-switch 59:From,th eother end J fifi and wire I25; a-wire I2Tconnects to the th'er side of the push button- I23. "Ihje,'1ampIil'I I nected across the bottom" andfthe cent hand contacts of the reversing' switchjil "and the connection-ofthe motor" dingslin orithe s'ystezn -is so" selectedyth-a-t' when,, this ,reyersing switch is in its left-hand position, the direction of operation is to open the door. The lock release electromagnet 85 is connected by wires 86 to the lower movable blade and to the left-hand center contact of the reversing switch. Hence the lamp 6'! is lighted and the look is released when the system is energized to open the door.

In operation: By operating the push button I23 a circuit is completed which energizes the winding I I! of the sequence relay R. This causes the relay R to throw its blade I I5 to its opposite or alternate position in a well known manner. This completes the motor energizing circuits, the two windings MI and M2 being energized to run the motor in a direction as predetermined by the set position of the reversing switch 59. As

the door I5 approaches its extreme position the reversing switch 59 is thrown over thus interrupting the operation and setting the motor circuits for reverse operation the next time the relay R, is operated by the push :button I23.

This throw over of the reversing switch is acoperationis diagrammatically represented inEig;

8. :For theup limit operation, anuptlimitlever I31 is vpivotally :m untedon a stati n ry bracket I39 below the powerunit and it extends ;up ;along the track I9 to the door sideof the. switchlever, which it engages by a projection I49. The upper end of this up limit lever I3,I-.is bent andprovidedwitha roller I II which is suitably posit nned to be ed in a d y a y iromtne-d or by-the cable 3| as the ,dOQI1I'e"a|Gh S IQQIJIPQQIY most position. Thisoperationis diagrammatical- 1y shown inFig; 9.

In view of .thepopwer unit having cqlltrqls gqmpactly assembled. it may lbevery conveniently-in; stalled and wired. The'service conductors lll and L2 maybe the conductors of the plugin cord I43 shown inFig. l, and it is only necessary-to plug inthe energizing connection after the-power unit has (been mounted in proper relation to its limit controls. Usually it .will be preferred to mount the. push button I23, or otheractuating means, separately from the unit, as.- for: example on the wall ofthe garageas shown; Also aplu rality of the actuating, push buttons I 23 {maybe provided and connected in parallel, as represented inFig; 16. One' suchpush button Imay: be

mounted inside of the house andperhaps .it may be desired to mount one on a post..adjacent the driveway, with a suitaible. lo'ckedfl cover; (not shown). Also I23. symbolizes any. othensuitahle actuating means 1 such as a floor. plate, electric eye,lf,drivew y. nonmagnetic pick-un t adio ,or otl'ierv known-control means A base. is. iabricated of angle irIoIns Iiii'andia latejifijlf xv Although an overheadtylpe of doorinstallation has been shownit Iis .toibe understood that-my improved operatingmeansmay be advantageo s 1y utiliz 'edwith any upwardwacting doors, one n for. otherv members. which are l to he. movede tweentwoextremepositions;

It isjapparentl thatwithinthescopep i n ventionimodifieations and,diirerentfarrangexnents maybe made'other than herein disclosed, and the present disclosure is illustrative merely, the invention comprehending variations thereof.

What is claimed as the invention is:

1. In an upward acting door and locking arrangement the combination of, a wall having a doorway to be closed, a door of suitable size and shape for closing said doorway, means movably supporting said door for movement either upwardly to open the doorway or downwardly to close the doorway, a lock mounted on the door adjacent one edge thereof, said lock having a horizontally projectedlock, bolt extendable be- -yond the edge of the door, a lock strike, means movably'mounting said lock strike on a stationary structure adjacent the edge of the doorway to be engaged by said lock bolt as the door moves down to a closed position, said lock strike having an inclined surface positioned for engaging the end of the lock bolt and pushing it to retracted position in the look as the door descends and r then receiving the look bolt projected under the lock strike for locking the door down in its'closed position, resilient means normally moving said ilock strike to the lock bolt engaging position, manual unlocking means for said lock operative from the outer side of said door, and electromagnetic-means for moving said lock strike to a disengaged position for unlocking the door so that the door can be raised. I

2. An upward acting door and locking arrangement in accordance with claim 1 and further characterized by having a reversible electric motor, door operating means driven by said motor to move the door to opened or to closed position, and circuit means connecting said electromagnetic means to be energized to unlock the door when the motor is energized to open the door.

3. In a motorized upward acting door installation the combination of, a wall having a doorway to be closed, a door for closing said doorway, guide means adjacent the opposite edges ofthe doorway for guiding the door in its movements adjacent thereto, a shaft rotatively disposed over the doorway, two V-type cablesheaves supported and secured on said shaft respectively above opposite edges of the door, a pair of cables disposed to run individually over said cable sheaves with one end of each cable extending down and connected to the lower part of the door, said cables being of soft stranded steel having centers of fibrous non-metallic material, counterbalancing means connected with the portions of said cables running over said sheaves for tensioning the cable to engage in said sheaves and to counterbalance the weight of the door in its various positions, and a reversible electric motor connected with said shaft to move the door up and down as desired.

4. In a motorized upward acting door installation the combination of, a well having a doorway to be closed, a sectional door for closing said doorway, two guide tracks disposed one adjacent each edge of the doorway in said wall, guide means extending from the edges of the door to cooperatively engage said guide tracksfor guiding the door in its up and down movements, the upper portions of said guide tracks curving inwardly away from the wall so that the .door moves to a substantially horizontal position above the doorway as it is raised to an openposition, a pair of door balancingsprings, means anchoring andholding one end of each spring at a position inwardly from the wall above the doorway, a pair of floating cable sheaves one on the other end of each spring, a-pair of cables one passing through each floating sheave, said cables being of soft stranded steel having centers of fibrous non-metallic material, a shaft rotatively supported extending across over the doorway, two cable sheaves having V-shaped cable grooves and secured upon said shaft one above each opposite edge of the door, said cables passing over the cable sheaves and down to connect with the lower portion of the corresponding edge of the door, the other end of'each' cable being'anchored after passing through its'floating sheave, said springs being selected of suitable strength and said springs and cables being of suitable lengths and suitably tensioned so that the main portion of the weight of the door is balanced by the springs as the door moves up or down adjacent the doorway or as it turns inwardly along the upper horizontal portions of said guide tracks, and reversible power means connected with said shaft for moving the door up or down to open or close said doorway as desired. 1

' CHARLES E. SCI-ILY'IERN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS.

Number Name v Date 355,555 Radford Jan. 4, 1887 374,028 Woehrle Nov. 29, 1887 504,208 Fox Aug. 29, 1893 897,394 Peters Sept. 1, 1908 1,001,339 Binder 1 Aug. 22, 1911 1,031,573. [Naumann July 2,1912 1,088,657 Hall 1 Feb. 24, 1914 1,251,682 Miller Jan. 1, 1918 1,274,381 Brooks Aug. 6, 1918 1,367,931 Varnum Feb. 8, 1921 1,724,995 Dautrick 1 Aug. 20, 1929 1,735,153 Bouton Nov. 12, 1929 1,744,641 Kohl Jan. 21, 1930 1,810,496. Peelle June 16, 1931 1,832,871 Meyer Nov. 24, 1931 1,848,311 Brower Mar. 8, 1932 1,880,850 Dautrick Oct. 4, 1932 1,916,651 .Beeman et al July 4, 1933 1,972,695 Staude Sept. 4, 1934 2,066,278 Keil Dec. 29, 1936 2,337,308 Buote Dec. 21, 1943 2,378,262 Vallen June-12, 1945 2,388,182

Bedding et al. Oct. 30, 1945

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