US1070363A - Adjustment for door-controlling means. - Google Patents

Description

H. G. VOIGHT.

ADJUSTMENT FOR DOOR CONTROLLING MEANS.

' APPLICATION FILED own, 1912 1,070,368. Patented Aug. 12, 1913.

\ Illllli UNITED STATES PATENT OFFTQE.

HENRY G. VOIGHT, OF NEW BRITAIN, CONNECTICUT.

ADJUSTMENT FOR NOOR-CONTROLLING MEANS.

T0 aZZ whom it may concern:

Be it known that I, HENRY G. VOIGHT, a citizen of the United States, residing at New Britain, county of Hartford, State of Connecticut, have invented certain new and useful Improvements in Adjustments for Door- Controlling Means, of which the following is a full, clear, and exact description.

This invention relates to controlling means for sliding doors in which a toggle is employed connecting the door to its casing or to a stationary abutment, which toggle must be of a definite length in order to be most effective.

It is my object to provide door cont-rolling means of this character with an adjustment for the toggle whereby the same may be adjusted to a nicety in compensation for errors in manufacture and also in case of appreciable wear. Indeed, by my invention, the necessity for such absolute accuracy in measurements is obviated.

For the purposes of illustration I will describe and illustrate the application of the invention to the specific door controlling means of my Patent No. 1,041,706, dated October 15, 1912.

The adjustment means forming the subject matter of the present invention is more fully described in the detailed specification following and is illustrated in the accompanying drawings forming part thereof and showing a preferable embodiment of such adjusting means.

In these drawings: Figure 1 is a fragmentary view in elevation illustrating the adjustment means used in connection with a specific form of door controlling means employing a toggle. Fig. 2 is a top plan view illustrating the adjustable pivot connection of the toggle levers. Fig. 3 is a front elevation of the parts shown in Fig. 2. Fig. A is a detail View illustrating in front elevation and longitudinal section, the construction of the outer face of the for ward toggle lever. Fig. 5 is an enlarged detail view of the forward end of the rear toggle lever. Fig. 6 is a detail view in front and end elevations of a clamping plate. Fig. 7 is a detail view in front elevation and top plan of a clamping washer. F ig 8 1s a detail view in side and end elevation of the pivot stud. I

Referring to the drawings by numerals, 1 designates the forward edge of a sliding door and 2 the rear edge of the cooperating Specification of Letters Patent.

Patented Aug. 12,1913.

Application filed October 21, 1912. Serial No. 726,925.

door casing. A lever member 3 formed of coniplemental spaced bars 3 is pivoted at its forward end to the forward edge ofthe door 1. A second lever member 41 formed preferably of complemental joined bars 1 is pivote to the rear edge of the door casing. Extending transversely of this second lever member 1 adjacent its rear pivoted end is a transverse arm 6. A power cylinder 7 is pivotally mounted at its lower end on the bracket 5 and has its piston 8 journaled in the lower end of the transverse arm 6, the power in the cylinder 7 normally tending to pull the piston rod 8 downwardly thereby pulling the lever member 1 downwardly with it. An operating handle 9 is pivotally mounted at 10 upon the forward edge of the sliding door 1. An arm 11 is pivotally mounted at 12 upon the forward edge of said door at a point below the pivot point 10 of the operating handle, and is provided with a curved slot 13 therein. A stud 11 carried by the bars 3 of the lever member 3, engages said arm 11 and rides in its slot 13, which slot owing to its curvature, acts as a cam to raise lever member 3, when said arm is moved. The arm 11 is provided, adjacent its pivoted end, with a curved slot 15 therein, describing an arc with the pivot point 12 as a center and a stud 16 carried by the operating handle 9 rides in this slot and is adapted, when the handle is moved to the right from the position shown in Fig.

1, to move arm 11 and thereby raise lever member 3 through the cam action of slot 13 on stud 14. The lever members 3 and A have their rear and forward ends respectively, pivotally connected so that the force of the power cylinder 7 will act through its piston rod 8 arm 6 and lever member 4, to move the sliding door 1 forwardly to closedposition, straightening out the toggle formed by the lever members 3 and 1, as the door reaches closed position, so that these lever members are in horizontal alinement with their connecting pivot on a dead center with these lever members. This, when the lever components are properly proportioned, will afford a dead center lock against accidental door opening movement on the part of these levers. The door may be opened by moving the operating handle to the right from the position shown in Fig. 1, this movement causing the arm 11, through its cam slot 13, to raise lever member 3 and break the toggle lock, this movement being permitted by reason of the fact that a limited free movement of the handle 9 independent of the door is possible. At the end of this limited free movement, the toggle lock will have been broken and the handle 9 will strike against an abutment stud 17 so that a further pull on the handle 9 in the same direction will move the door itself to open position against the force of the power cylinder 7.

I do not claim herein the specific form of operating means and toggle lever connection, described, as this forms the subject matter of my Patent No. 1,0et1,706, dated October 15, 1912 the present invention consisting in the application in combination with operating means of this general character, of the toggle lever adjustment means which will now be described in detail.

This adjustment of the toggle to secure the definite lever components requisite to siu-cessful operation, is, in the present instance, accomplished by providing an ad justable pivot connection between the two lever members forming the toggle. To this end I provide a pivot stud 18 having an enlarged hub portion 19 formed thereon inter- ,mediate its ends. The forward ends of the bars e of the lever member f are adapted to be jOlll'llttlQCl on this hub portion, these bars being provided with alined apertures 20 thcrethrough. The hub portion 19 is of greater thickness than these joined bars 41- so that it will project slightly beyond the opposite faces of the joined bars (see Fig. 2). The shank of the pivot stud 18 on either side of the hub portion 1.9, is screw threaded as at 21 and 22 respectively, the shank portion 22 being preferably of somewhat greater length than the shank portion 21. The pivot stud at the end of the single portion 22 is provided with a slot 23 to receive the head of a screw driver or other suitable tool. Each of the bars 3 forming the lever member 8, adjacent their rear ends are provided with alined elongated slots 2% through which the shank ends of the pivot stud 18 extend to project beyond the outer faces of said bars. The forward apertured end of the joined bars 4? is brought between the rear ends of the forward lever bars 3, so that the apertures 20 and the slots 24 are in alinement. The pivot stud 18 is then inserted through the alined apertures so that its hub portion 19 is seated within the apertures 20 of the joined bars with the end faces of said hub portion projecting slightly beyond the outer faces of these bars and abutting against the inner faces of the spaced bars 3. A detachable clamping plate 25 rests against the rear face of the rear bar and is provided with a boss and with a threaded aperture 27 extending throiilgh said plate and boss, this threaded aperture being engaged by the threaded shank 21 of the pivot stud, and

being drawn against the rear face of the rear bar 8 when said pivot stud is rotated by; a screw driver or other suitable tool. The front face of the front bar 3" is provided with a series of transverse corrugations 28 surrounding and extending beyond the elongated slot 24: therein. A washer 29 provided on its rear face with similar corrugations 30, is centrally apertured to fit over the threaded shank 22 of the pivot stud to engage the cmrugations 28. it nut 31 is then screwed up on the threaded shank end to clamp this washer against the outer face of the outer bar 3, the pivot stud being held. stationary of ctmrse while the nut is being screwed up. Owing to the fact that the end faces of the hub 19 extend beyond the outer faces of the joined bars l, the bars 3 are spaced slightly from the bars P which, therefore, may be turned on the hub 19 and are not clamped against movement by the clamping engagement of the plate 25 and washer 29. As the bars are clamped against the end faces of the hub 19 by the means described, the hub 19 is of course, held stationary.

It will be seen that by reason of the structure described, the point of pivotal connection between the front lever member 3 and rear lever member a may be moved to meet the exigencies of the particular case and the clamping plate 25 and washer 29 moved into clamping engagement with the bars 3 to fixedly maintain the pivot point as moved and adjusted. The length of the elongated slots 24. will be such of course, as to provide plenty of adjustment in both directions. Also while the lever member at has been shown and described as being comprised of joined bars 41-, it is obvious that it may be formed of a single bar of suflicient thickness and strength to meet the service conditions of the particular case, the width of the hub member 19 being of course modified to suit the thickness of the particular lever bar t which is employed.

In the preferred construction the arm 3 is preferably somewhat longer than the arm t, which is common practice, and is disclosed in my former patent above referred to. In the preferred construction, also I provide the adjustment slot in the longer arm 3 so that. when the device is adjusted to meet the different conditions encountered in the in stallation of the apparatus in different buildings where conditions almost al 'ays vary the change in the pivot point will occur with reference to the length of the longer arm 3, it being always preferable to have the arm a never of greater length than the arm 3, and ordinarily of less length because as is well known if the arm a, to which the closer mechanism 7 is attached is unduly long it may permit the other arm to rise to such a steep angle as to impair the operator of the elevator to swing up the arm 3 in the act of opening the door. The best results, therefore, can be obtained by providing the slots 24 in the longer arm 3.

From the foregoing, it will be evident that I have provided in combination with a door controlling mechanism of the general character illustrated, means for varying and adjusting the components of the toggle to secure the most eifective operation of a device of this character.

lVhile I have herein described and shown a specific embodiment of the invention and illustrated it as applied to a particular type of door controlling means, I desire it understood that the invention is not limited to this specific combination, but that the specific structure employed may be modified within the spirit of the invention and the scope of the appended claims.

lVhat I claim is:

1. Connecting means for use between sliding closures and relatively stationary abutments, embodying ,a toggle comprising two pivotally interconnected bars, and means for varying the over-all length of said bars, at the point of pivotal connection of one bar relative to the other.

2. Connecting means for use between sliding closures and relatively stationary abutments embodying a toggle of two pivotally interconnected bars, one of said bars being provided with a pivot stud adjustable longitudinally thereof, and the other of said bars being journaled on said stud.

3. Connecting means for use between sliding closures and relatively stationary abutments embodying a toggle comprising two pivotally connected levers, one of said levers having an'elongated slot therein, a pivot stud insert-ible through said slot and adjustable longitudinally thereof, the other of said levers being journaled on said pivot stud.

4:. Connecting means for use between sliding closures and relatively stationary abutments, embodying a toggle, said toggle comprising a lever having complemental spaced arms provided with elongated alined slots therein, a pivot stud carried by said complemental arms and extending through the slots therein, a second lever having its end extending between said spaced arms and journaled on said pivot stud, and means for varying the position of said stud in said elongated slots and for clamping said stud rigidly to said spaced arms whereby the range of movement of said toggle may be varied.

5. Connecting means for use between slid-- ing closures and relatively stationary abutments, embodying a toggle, said toggle comprising a lever member having complemental spaced arms provided with elongated alined slots therein, a stud carried by said arms extending through the slots therein and having a hub formed thereon between said arms, a'second lever having its end extending between said spaced bars and journaled on said hub, and means whereby the relative position of said stud in said elongated slots may be varied and whereby said spaced bars may be clamped against said hub to hold said stud rigid relative thereto.

HENRY Gr. VOIGHT.

Witnesses GWENDOLINE A. J AOKSON, CHARLES E. RUssELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iateuts, Washington, D. G.

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