US2501505A - Door spindle key lock - Google Patents

Description

March 21, 1950 c, GARRISQN 2,501,505 DOOR SPINDLE KEY LOCK Filed Sept. 27, 1947 IN VEN TOR.

FORREST GARRISON ATT'YS Patented Mar. 21, 1950 Forrest -C. ;Garrison,-.Eort Myers,.Fla., :assignor to .EEhe'OScar 0.,Rixson 00., .Ghicago, 1111., :a :cor-

norationoflllin i Application-September 27, 1947, Serial No. 7%;579

1 fllhis invention relates :to :means for mounting a "door :upon the (spindle-of a door .oheokinmand closing device, especially in :situations where-:the operating mechanism visslocated in a recess in the floor and where the main spindle of that mechanism carries the weight of the door.

Themain object of this ,inventionris .to provide a simplified and improved form of key ;connec tion between the spindle and the hinge arm member on the door, whichprovides for a degree of verticalzadjustment of the;door upon the :spindle and: at the same time locks .this member to r the spindle gsoias to prevent eitherrelative :rotation or relative yertical shifting "of :thewmemher with respect to the spindle.

A specific embodiment of this invention is shown in the accompanying drawings in which;

Figure 1 is a top view, partly broken away, of the joint between the spindle and hinge arm member.

Fig. 2 is an elevation of the same with parts in section on the line 22 of Fig. 1.

Fig. 3 is a perspective view of the key.

A general arrangement of door check mechanism to which this invention is particularly applicable is shown in applicants Patent No. 1,832,699 of November 17, 1931.

In the form shown in the drawings, the spindle i is the upper end portion of a crank shaft that is journalled in a casing (not shown) and connects the door with its closing and checking mechanism which is embedded in the floor as described in said patent.

In the present invention the spindle is connected to the door by means of a hinge plate comprising a hub 2 having a bore 3 fitting the spindle l and having arm 4 that is mortised into the bottom of the door. A cylindrically curved keyway 5 is cut into one side of the spindle adjacent its upper end, its transverse elements being 01 like circular curvature and its longitudinal elements being straight and parallel to the axis of the spindle, so that this keyway can be formed by a drill moving parallel to the axis of the spindle. This keyway 5 forms a seat for a cylindrical key 6 and terminates in a shoulder 1 at its lower end that forms a ledge for the key to rest upon.

The key 6 may be formed by cutting a piece of cylindrical rod stock to suitable length and removing a portion at one'side to form a flat inclined wedge face 8. Adjacent the smaller or upper end of the key, there may be a notch 9 to facilitate removal of the key from its keyway by means of a suitable implement.

The hub also :has ;a.:keyw'ay i0 .in-z position to register with the keyway 5 :to accommodate the "@key :6. L'Ifhe .keyway 1.5 in the :spi-ndle.;accurately Ffits 'the cylindrical body of :the key-:6 but rthe..-keyway iii) :in the chub-sis .madesomewhat larger: in cross sectional. areato:permitathevready insertion and removal of thelkeynfi whilerthe spindle;.isiiniposition withinithe hub.

:ilihe-ikeyiis placed inrthe ways in ,such1position that vzthe :narrow end of v:its wedge-shaped ibody' is ;at :theatop-iso "that the ';fiat surface 18 ithereof slopes 'zdownward .and ioutward :from the :axis of thesspi'ndle.

:Azsetsorew lri :is threaded into .the :hub 2 in Such :an ;.inclined iposition'zthat its .axis .is :approximately tangent to the periphery of the spindle and normal to the inclined surface of the key 6.

In operation, after the door closing mechanism, represented by the spindle l, is set in its fixed position in the floor, the arm 4 of the hinge member is mortised into the bottom of the door and then placed upon the upstanding end of the spindle I. When the door is in its closed position, the keyways in the spindle and hub 2 will be in approximate registry with each other.

The key 6 is then dropped into the keyways with its large end at the bottom and resting on the shoulder T on the spindle. The door is then accurately adjusted in height and the set screw II is set up to bear tightly against the flat inclined wedge face of the key 6. The set screw, being substantially tangential to the periphery of the spindle, presses the key laterally against a shoulder portion of the wall of the keyway in that converges toward the axis of the spindle. Thus the set screw produces a rotary wedging effect that locks the spindle firmly against any possibility of rotation relative to the hub 2 and. forces the key 6 into firm lateral clamping engagement with the channel walls of both keyways 5 and I0; also since the axis of the set screw is normal to the inclined flat face 8 of the key, the Weight of the door supplements the thrust of the said screw in such manner as to lock the spindle l and hub 2 against both vertical and rotary relative shifting.

Although but one specific embodiment of this invention is herein shown and described, it willv be understood that numerous details of the structure shown may be altered or omitted without departing from the spirit of the invention as defined by the following claims.

I claim:

1. A door check spindle fastening, compris- ,ing a vertical spindle having a cylindrical top portion with a cylindrical keyway in one side, which keyway has its transverse elements of circular curvature and its vertical elements straight and parallel with the axis of said spindle, a ledge formed at the lower end of said keyway, a door hinge arm having a hub bored to fit said spindle and having a keyway extending through said hub in one side of said bore and providing a shoulder opposed to the keyway in said spindle and inclined laterally toward said spindle, a key in said keyways, resting on said ledge and having a cylindrical body longitudinally beveled to form a vertically inclined face opposed to said shoulder, and a set screw threaded in said hub in position to bear on said inclined face in a direction normal thereto and between said shoulder and said spindle.

' 2. A door check spindle fastening, compris ing a vertical spindle having a cylindrical portion, a door hinge arm having a hub bored to fit said cylindrical portion, a keyway of circular cross section in one side of said spindle portion, having a key supporting ledge at its lower end,

a keyway in said hub registering with the keythreaded in said hub in position to bear on said fiat surface portion of the key in a direction normal thereto and between the spindle and said wall surface portion of the keyway.

3. A door check spindle fastening, comprising a vertical spindle having a cylindrical top portion, a door hinge arm having a hub bored to fit said spindle top portion, a keyway extending vertically in one side of said spindle at its upper end, said keyway having its surface made up of circularly curved transverse elements and straight vertical elements, and terminating at its lower end in a ledge to support a key, a keyway in said hub forming a shoulder laterally inclined toward said spindle, a key seated in said keyways so as to rest on said ledge and having a cylindrical body longitudinally beveled to form a vertically inclined face opposed to the keyway in said hub, and a set screw threaded in said hub and bearing on said inclined face in a direction substantially tangent to the periphery of said spindle top portion and substantially normal to said inclined key face.

FORREST C. GARRISON.

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

UNITED STATES PATENTS Number Name Date 198,481 Woodbury Dec. 25, 1877 1,574,735 Paloski Feb. 23, 1926 2,004,187 Bummer June 11, 1935

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