US358417A - summers - Google Patents

Description

(No Medal.) I

L. P. SUMMERS. ELECTRICAL DOOR OPENER.

No. 358,417. Patented Feb. 22, 1887.

N. Przns mmulhom her. wahinglun. u c

UNITED STATES PATENT OFFICE.

LUCIUS P. SUMMERS, OF ORMOND, FLORIDA, ASSIGNOR TO 1?. & F.

CORBIN, OF NEW BRITAIN, CONNECTICUT.

E LECTRlCAL DOOR-OPENER.

EPECIFICATION forming part of Letters Patent No. 358,417, dated February 22, 1887.

. Application filed September 1, 1886. Serial N0. 212,432. (No model To all whom it may concern.-

, tions.

Be it known that I, LUoiUs P. SUMMERS, a citizen of the United States, residing at Ormond, in the county of. Volusia and State of Florida, have invented certain new and useful Improvementsin Electric Door-Openers, of which the following is a specification.

My invention relates to that class of dooropeners which are adapted to be operated by electricity from the different floors of a building for opening the main door, and the objects of my improvement are to Simplify the construction of the device and to improve its efficiency.

In the accompanying drawings, Figure l is an elevation of my door-opener as viewed from the rear. Fig. 2 is an elevation thereof as viewed from the left-hand side of Fig. .1, a portion of the parts being broken away in order to better show the construction of other por- Fig. 3 is a transverse section thereof on line 00 w of Fig. 1. Fig. 4 is'a like section of the same on the same line,with the parts in a different position.

is another partial section on line 2 z of Fig. 1.

In all of the figures except Fig. 4 the parts are in position for holding the door closed, while in Fig. 4 they are in the position which they have when the door is open.

A designates the main portion of the frame or case, and a the face-plate, which forms a part of said case. This case with the several parts mounted thereon is designed to be secured to the door-jamb for' use in connection with an ordinary latch or lock for main doors.

The device is so placed upon the door that the ordinary latch-bolt may be engaged with the keeper-slide B. This slide is mounted in suitable ways or guides, 12, so as to slide obliquely, and is provided upon its back side with a rack for engagement with the circular rack a, mounted upon shaft d. This shaft is set at an angle to both parts A a of the case, the end bearing the rack 0 being the farthest from both plates. At the opposite end of the shaft d there is another circular rack, e, which engages a rack upon the setting-slide 0, having an arm, 0,which setting-arm moves from front to rear. A spring, f, is coiled around the shaft d, with one end secured to said shaft,

Fig. 5 is a partial sec-' tion thereof on the liney y of Fig. 1; and Fig. 6

while the other end bears upon a part of the case,whereby said spring has a constant tendencyto throw thekeeper-slide into the position shown in Fig. 4, and the setting-arm into the position indicated by broken lines in Fig. 6. Thus it will be seen that the settingarm and keeper-slide are so connected as to move together, and that they are both simultaneously forced forward by the same spring. The shaft d is set at an angle to the plates in order to give the keeper-slide a greater movement than that'of the setting slide and arm, and the several racks arebeveled to correspond with said angle.

To the heel of the keeper-slide B, I pivot one arm, 9, ofa toggle-lever, while the other arm, 72, of said toggleleveris pivoted to the casein such a position that when the keeper-slide is pushed backward and outward in position for bold ing the door the three pivots of the toggle-lever may be brought nearly into alignment. Each of the toggle-levers g h is provided'with short transverse arms near its connecting-pivot, in one of which arms is the adjusting-screw i, the end of which bears against the other short arm, whereby the toggle-lever may be adjusted so as to stop it with the central pivot in any desired position with reference to the others, thereby regulating the power required to deflect the toggle-arms out of their bracing position.

1) designates an electro-magnet of any ordinary construction, and E is the armature, which is pivoted to the main portion of the case. Rigidly connected thereto, so as to swing therewith, isa tripping latch or hook, is. A light spring is employed for holding the armature away from the magnet. Upon one member of the toggle-arms there is a trip-pin, n, for engagement with the latch in, so that when the latch is engaged therewith the togglearms are held in their straightened or bracing position, as shown in all of the figures except Fig. 4.. These toggle-arms and latch constitute a locking mechanism for holding the sliding keeper and connected partsagainst the power of the spring. With the parts in this position and the latch-bolt within the keeper slide B, the door cannot be opened without withdrawingthe latch-bolt. The latch will ordinarily be so set that it cannot be operated from lines in Fig. 6.

the outside of the door to withdraw it. The magnet is to be connected in any ordinary manner with a battery or other source for supplying electricity. Upon closing the circuit the armature E will be drawn toward the magnet, thereby releasing the latch 70 from the trip-pin a, which will permit the toggle-arms to be deflected, under the force of the spring f and the keeper-slide B, to move forward and inward to withdraw it from over the end of the latch'bolt, as shown in Fig. 4. The settingarm is also moved, under the influence of springf, into the position indicated by broken The arm 0 of the setting-slide faces outwardly and is designed to be engaged by a metal stud or projection rigidly secured to the door, so that the movement of this arm in the forward direction will by engagement with said stud throw the door slightly open. Upon closing the door this stud or projection will strike the setting-arm 0 of the slide 0 and force the slide and arm backward into the position shown in full lines in Fig. 6, thereby at the same time bringing the keeper-slide and toggle-arms into their former position, as shown in Fig. 3.

By making the keeper-slide move obliquely backward and inward in releasing the latch there is less friction on this slide than in the case of keeper-slides which withdraw from the latch-bolt by moving in a plane that is parallel to the face of the latch-bolt. By the employment of the toggle-arms, which are practically straightened in holding the keeper-slide in place, only a light pressure is exerted upon the latch which is moved by thearmature,and consequently but little force is required to trip said latch.

The pressure on the latch can be varied by means of the adj ustiug-screw 1'. By connecting thekeeper-slide by means of racks with the spring-shaft d, I am enabled to use thesettingarm at the other end of said shaft for the double purpose of setting the keeper-slide and for throwing the door open when the keeperslide releases the latch-bolt.

I am aware that prior patents show various devices for opening doors by means of a magnet and swinging armature; that in some of them there is akeeper-slide,and in one of them there is a mechanism for setting said slide by the act of shutting the door. Said prior art is hereby disclaimed.

I claim as my invention- 1. In a door-opener, the keeper-slide B, mounted to slide obliquely within the case or frame, in combination with a spring for forcing said keeper-slide forward and inward to disengage the latch, and mechanism for lock ing the keeper-slide against the force of said spring, substantially as described, and for the purpose specified.

2. In a door-opener, the combination of a keeper-slide, the shaft (1, racks for engaging said shaft and slide, the combined setting and throwing arm operatively connected with said shaft, a spring for throwing said parts in one direction, and locking mechanism for holding said parts against the force of said spring,substantially as described, and for the purpose specified.

3. The combination of the keeper-slide B, the toggle-arms g h, bearing trip-pin a, the latch is, and a spring for forcing the keeperslide toward the toggle'arms, substantially as described, and for the purpose specified.

4. The combination of the keeper-slide B, a spring for forcing said slide in one direction, the toggle-arms 9/, having trip-pin 11. mounted thereon, and the short lateral arms near their con nectingpivot, the adj listing-screw i, extending through one of said arms, and the latch k,

for holding the togglearmsin position to resist the force of the spring upon the keeper-slide, substantially as described, and for the purpose specified.

5. The combination of the keeper-slide, a spring for forcing said slide in a direction to disengage it from the door-latch, the togglearmsg h, bearing trip-pin a, the latch k, for holding the toggle-arms in their bracing position to resist the spring-pressu re on the keeper, and the armature and magnet for tripping said latch, substantially as described, and for the purpose specified.

6. The combination of the slide B, having a rack thereon, the circular rack c engaging therewith, the oblique shaft d, on which said rack c is mounted, the circular rack 6, secured to the other end of said shaft, the setting and throwing slide 0, having a rack engaging with the circular rack e, the springf, for partially rotating said shaft in one direction, locking mechanism for holding said shaft and connected parts against the force ofthe spring,and the armature and magnet for releasing said locking mechanism,substantially as described, and for the purpose specified.

LUGIUS I. SUMMERS.

Witnesses:

J AMES SHEPARD, JOHN EDWARDS, Jr.

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