US1478974A

US1478974A - Automatic weather stripping

Info

Publication number: US1478974A
Application number: US567956A
Authority: US
Inventors: George E Marcotte
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-06-13
Filing date: 1922-06-13
Publication date: 1923-12-25
Anticipated expiration: 1940-12-25

Description

me@ 25 H923. B54785974 Y G. E.. M'SARCOTTE AUTOMATIC WEATHER sTRPPmG F1166 June ls .1922 2 sheets-sheet 1 @am 25, B923. y 31.47,@74

G. E. MARCQ-WE 'AUTOMATIC WEATHER STRIPPING y Filed June 15, 1922 2 Sheets-sheet z Patented lec. 25, i923.

GEORGE E. MABCOTTE, OF CHICAGO, IIILLNOIS.

AUTOMATIC hVEATI-EER STR-IPPNG.

Application filed June 13, 1322. Serial No. 567,956.

To all whom t may concern Be it lrnown that l, GEORGE E. Miinoo'r'rn, citizen of the United States, residing at Chicago, in the county of Cook and State of illinois, have invented a new and useful Automatic Weather Stripping, of which the following is a specification.

My invention relates to improvements in automatic threshold or bottom door stop in which av movable stop is automatically operated by the movement of the door; and 'the Jbjeots of my improvements are first, to? automatically close the aperture between a door and the floor; second, to eliminate the usual wood threshold; third, to so construct the device that it can be applied to any door; fourth, to malte a simple, cheap and durable device, and other objects to become apparent from the description to follow.

In dwellings it is desirable to have the doors lit snugly at the bottom and yet do away with the usual woody, threshold, this is especially! true of doors leading to the outside, and with the use of my invention this desirable condition is efectually obtained without having any obstruction on the floor.

To apply my invention to a door the bottom edge of the door is provided with a suitable groove and the mechanism comprises a shutter made movable toward and away from the Hoor and having suitable connec tions which will automatically raise the shutter up from the floor as the door is swung to an open position and will lower the shutter to contact the floor when the door is swung to a closed position.

To describe my invention so that others versed in the art to which it pertains can make and use the same I have illustrated it on the accompanying` two sheets of drawings forming a part of this specification, and in which:

Figure 1, is a fragmentary perspective view of the lower corner of a door provided with weatherstrippin'g embodying my invention; Fig. 2, is a side elevation of the same; Fig. 3, is an edge view of the same; Fig. 4, is a sectional view taken on line 4--4 of Fig. 2; Fig. 5, is a sectional view taken on line 5 5 of Fig. 3; Figs. 6, 7, 8, 9 and 10 are perspective views of disassembled parts of the mechanism shown in Fig. 5; Fig. 11, is a fragmentary side elevation of a door provided with weatherstripping embodying a modified form of my invention; Fig. 12, is a sectional view taken- 011, lille 12-12 0f Fg- 11 and Fig. 13, is a sectional view taken on line 13--13 of Fig. 12. Similar reference characters refer to similar parts throughout the several views.

The lower edge of the door 14 is provided with a suitable groove 15 to accommodate the mechanism, which in Figs. 1 to 5 comprises the shutter 16 rigidly secured tol the rod 17 pivoted at each end at the edges of the door. lThe shutter extends the entire widthl of the door and is moved down and up by mechanism to be described, automaticallyl when the door is swung shut and open. In Figs. 11 to 13 the shutter 18 is mounted to slide vertically toward and away from the iioor and is connected to mechanism to be described for automatically moving the same when the door is swung shut and open.

Referring to Figs. 1 to 10, one end of the rod 17 has rigidly secured to it the small gear 19 which meshes with the large 'gear 2() mounted on a spirally threaded sleeve 21 which is held against rotation by means of its square end 22 extending into the square pocket 23 formed in the casing 24 having the cover 25 and secured to the ed'ge of the door by suitable screws. The sleeve 21 is screw threaded on the interior into which the threaded pin 26 is fitted tightly so it cannotJ be turned without the aid of a screw-driver. A coiled expanding spring 27 is placed in the pocket 23 between the bottom of the pocket and the square end 22 of thel sleeve 21 to normally press the end of the sleeve against the cover 25. The pin 26 projects beyond the hinged edge of the door 14 and in operation as the door is closed the end of the pin 26 will come into contact with the jamb of the door and with the sleeve 21 be pushed in against the tension of the spring 27, to the left as viewed in Fig. 5. Since the sleeve 21 is held against rotation the spiral thread on the sleeve 21 meshing with the spiral grooves in the large gear 20 will rotate the gears 2O and 19 in one direction or the other each time the sleeve 21 is moved in or out. The parts are so connected and arranged that as the pin 26 is moved in, the shutter 16 will be moved, down against the ioor and as the sleeve 21 is moved out under pressure of spring 27, the shutter 16 is moved upy away from the floor. Thus it is clear that the shutter 16 is moved down against the floor each time the door is closed and is lifted from the floor as the door is opened. As seen in Figs. 3 and 4 the shutter 16 contacts with the floor on an incline so that the tendency will be to slide over any roughness on the floor as the door is closed, and to change this incline to the opposite direction as is necessary when the door swings to the opposite side, a sleeve 21 and a gear 2O having oppositely directed spiral threads to those shown, are substituted lor the present sleeve and gear and the rod 17 is transferred to the bearing hole 28 provided in the plate or cover 25.

ln the modilied form shown in Figs. 11, 12 and 13, the shutter or slide 18 is mounted to slide vertically in the lrame 29 secured in the slot 15 provided in the lower edge o'll the door 111-. To move the shutter 18 down and up it is provided with a plurality of vertical extensions 30 on its upper edge to which are pivotally connected the long arms of bell crank levers 81 which are pivotally'mounted at to the iframe 29. The short arms ofthe bell crank levers 31 are 1pivotally connected toa bar 33 provided at one end with a pin 311e extending beyond the hinged vedge or the door lll so that asthe door is closed the end of the pin 34 will engage the j amb of the door and be pushed in against the tension or" the spring 85 and move the shutter 18 down into contact with the floor. The spring 35 is so connected as to normally hold the bar 33 to the right as viewed in Figs, 1l and 13, and thus hold the shutter 18 in a raised position. The pin Se is preferably screwthreaded into the end of the bar 33 to vary its extending position beyond the edge or' the door. The parts are so constructed and arranged that the shutter 18 will be moved down against the floor when the door is closed and will be lifted from the floor when the door is opened.

Having thus fully described my invention what l claim as new and desire to secure by Letters Patent of the United States is 1. In an automatic weatherstripping for the lower edge ot a door, a i'lat stripmounted to pivot on a rod at one edge, a gear ysecured to the pivotal rod of the strip, a

second gear provided with a female spiral invasiva thread held against axial movementV and free to rotate and operatively mounted on a sleeve provided with an external spiral thread and free to move axiallyl and held against rotation, a spring to normally hold the sleeve in one position, a projection on the sleeve to extend beyond the hinged edge ot the door and a pivoted lever normally disposed on the'hinge jamb o'l the door arranged to have one 'free end engage the edge ot the door and the other tree end engage the said extending projection.

2. .ln an automatic weatherstripping :tor the lower edge oit a door, a flat strip mounted to pivot on a rod at one edge, a gear secured to the pivotal rodot the strip, a second gear provided with a female spiral thread held against axial movement and free to rotate andv operatively mounted on a sleeve provided with an `external spiral thread and lree to move axiallyrand held against rotation, a spring to normally hold the sleeve in one position and a projection on the sleeve to extend beyondthe hinged. edge of the door arrangedto engage a part on the door jamb when the door is closed whereby the sleeve is movedlongitudinally and the flat strip is swung on its pivot.

3. In a door structure an automatic weatherstripping for the lower edge ofthe door, comprising a flat strip mounted on the lower edge of the door arranged to be moved down and up, means for moving said strip down and up comprising a projection extendine' beyond thehinged edge oi the door and rigid with a longitudinally slidable element and a pivoted lever on the hinge door jamb arranged to have one end contact with the edge ofthe door proper andthe other end engage the said extending projection.

1n testimony whereof l have signed my name to this spe'cilication in presence of a subscribing witness this 28th dayot May, 1922, at Chicago,lllinois.

enoiaen Mancorrn Witness:

RroHARD J. Jacinta.