US1072996A

US1072996A - Electric lock-strike.

Info

Publication number: US1072996A
Authority: US
Inventors: Frank F Schneider
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-05-27
Filing date: 1913-05-27
Publication date: 1913-09-09
Anticipated expiration: 1930-09-09

Description

F. P. SCHNEIDER.

ELECTRIC LOCK STRIKE.

APPLICATION FILED MAY 27, 1913.

Patented Sept. 9, 1913.

2 SHEETS-SHEET l.

INVENTOR raw/ iii/walk)" WITNESSES ATTORNEYS P. P. SCHNEIDER.

ELECTRIC LOCK STRIKE.

APPLICATION FILED MAY 27, 1913.

Patented Sept. 9, 1913.

2 SHEETS-SHEET 2.

WITNESSES ATTORNEYS COLUMHI A PLANDURAPH IO-,WASHINGTON, D. c.

IINTTED STATES PAN FFTQ.

FRANK F. SCHNEIDER, F RIDGEFIELD,. GONNEGTIGUT.

Errors-re LOCK-STRIKE.

To all whom it may concern Be it known that I, FRANK F. SCHNEIDER, a citizen of the United States, and a resident of Ridgefield, in the county of Fairfield and State of Connecticut, have invented a new and Improved Electric Lock-Strike,of which the following is a full, clear, and exact description.

This invention relates to electric lock strikes, and more particularly to keepers or strike plates for door latches, whereby the latch-engaging portion or element of the after and set forth wi keeper can be electrically released from a remote point whereby the door is unlocked and allowed to swing open.

The invention has for its general objects to improve and simplify the construction and operation of devices of the character referred to so as to be comparatively simple and inexpensive to manufacture, reliable and eflicient in use and composed of comparatively few parts. V

Another object of the invention is the provision of simple, effective and improved means between the locking armature and a latch-engaging element of the keeper whereby when the armature isfattracted the said latchengaging element can move to releasing position to allow the door to open and to immediately return by spring or other pressure to normal position and reset the holding means between the armature and latch-engagingelement. V p 7 With these objects in view, and others as will appear as the description proceeds, the invention comprises various novelfeatures of construction and arrangement of parts which will be more fully described hereinth particularity in the claims appended hereto,

In the accompanying drawings, which illustrate one embodiment of the invention,

and wherein similar reference characters are 1 p parts of the dev ce.

employed to designate corresponding parts throughout the several views, Figures 1 and 2 are opposite views respectively of the clevice removed from the door janib and having the side plates taken off to. expose the interior structure; Fig. 3 is a perspective view of the frame of the device; Fig. 4 is a View showing in perspective the various movable parts of the door releasing device or opener in a relative position; Fig. 5 is a horizontal sectionon the line 5-5 Fig. 1, the parts in normal position; Fig. 6 is a similar view showingthe l'atch-engagingelement in re- Specification of Letters Batent.

Application filed May 27, 1913'.

y the do or releaser,

Patented Sept. 8*, 1913,. Serial No. 770,130. i

leasing position; Fig. 7 is a sectional view on the line 7-7 of Fig, 1, showing the relation of the armature engaging latch to the armature when the parts are in normal position; Fig. 8 is a similar view showing the armature latch in released position; and Fig. 9 is a vertical section on the line 9-9 of F g Referring to the drawing, more particularly to Fig. 3, A designates the frame of which frame comprises afront plate 1 that is mortised in the doorjamb, and in this front plate is a recess 2 for receiving the latch of a door and also for holding the latch-engaging element B, Figs. 1, 2 and 4. The plate 1 forms the front of a casing A composed of a rear wall 3 and a top and

bottom

41 and 5, respectively, the casing being preferably, although not necessarily, a metal casting. In the casing is a partition composed of two sections 6 and 6' carried respectively by the front and

rear walls

1 and 3 and united by a vertical connecting portion 7, said partition form ing a support for the holding means between the armature and the latch-engaging ele- .ment. The entire frame A is mortised in the door frame and the front plate 1 has openings 8 for receiving screws to hold the frame A in place. partition 6 are openings 9 for receiving the shaft 10 for the latch-engaging element B, and on the sections 6 of the partition of the casing are threaded openings 11 for receiv- :ing screws that hold the side plates 12 on the frame A, one l shown in Fig.8 while the other opening is "on the opposite edge of the partition. Ris- In the top 4 and in the of such openings 11 being ing from thesection 6 of the partition is a post or stop 13, the purpose of which will be hereinafter more fully described. In the section 6 .of the partition is an opening 14-. forreceiving a pivot screw for one of the Set into a recess 15, as the rear wall 3 of the of insulation for holdshown in Fig. 3, in frame A. is a block 16 ing the binding the windings of the electro-magnet are connected, and also in the rear wall 3 is an opening 19 for receiving the screw 20, Fig. 1, that holds the electro-magnet O in place.

posts

17 and 18, to which.

On the rear side of the front plate 1 is an apertured lug 1 which alines with an opening 5 in the bottom of the frame, the lug and opening serving to receive the pivots of the armature of the electro-magnet.

Having described the structure of the frame the moving parts of the apparatus will now be considered, and more particularly in reference to Fig. 4. The latch-engaging element I3 is suitably shaped to enable the latch of the door during the closing movement of the latter to slip past the element B and engage with the shoulder or holding portion 2O thereof, and on the element B are apertured ears 21 through which the shaft or pintle 10 extends. Extending rearwardly from the latch-engaging element B is a lug 22 that is provided with a depending pro-v jection 23 that enters a slot 24- in the pivoted lever or arm 25. The lever or arm 25 has one end disposed under the upper portion 6 of the partition in the casing and its other end over the portion 6 of the partition, and passing through the opening 26 is a pivotscrew 27 which screws into the opening 14 in the portion 6 of the partition. Cotiperating with the pivoted member 25 is a latch 28 which has an opening 29 for receiving a pivot screw 30 that screws into an opening 31 in the portion 6 of the partition. This latch 26 extends parallel with and lies under the member 25 and has upwardly-eXtending

lugs

31 and 32 at its opposite edges, such lugs being spaced apart so that the free end of the member 25 will be disposed between them. Depending from the latch 28 is an armature-engaging lug 33 that is arranged to cotiperate with a shoulder or lug 34 on the upper end of the armature 35, which armature has a pintle lug 36 at its upper end to engage in the apertured lug 1, while the lower end of the armature turns on a screw or pivot 37 disposed in the opening 5* in the bottom of the frame A. On the armature is a spring 38 which engages with the pole face on the lower one of the magnet cores 39, whereby the spring holds the armature away from the electro-magnet.

Normally the lug 33 of the latch member 28 is engaged with the portion 34- of the armature, so that the armature will prevent the latch 28 from moving, and as the latch cannot move the pivoted member 25 cannot move because of its free end engaging the lug 32 of the latch member 28, and since the member 25 cannot move it is obvious that the door latch engaging element B cannot more because of the pro ect1on 23 thereof extending into the slot 24;, and as a result the door is held closed. As soon as the elec- 'tro-magnet is energized the armature 35 is attracted, so that the lug 33 of the latch will slip past the armature and allow the latch 28 to move from the position shown in Figs. 5 and 7 to the position shown in Figs. 6 and 8, and at the same time the member 25 and door latch holding element B under, the opening pressure on the door will move from the position shown in Fig. 5 to the position shown in Fig. 6, whereby the door swings open. The member 25 in moving strikes the connectingportion 7, Fig. 3-, between the two sections of the partition of the'casing, so that the connecting portion 7 forms a fixed stop for the member 25. The spring 40 on the shaft 10 of the latch-engaging element B is placed under'tension so that as soon as the door is released the parts return to normal position by reason of the tension of the spring In moving backwardly the arm, 25 engages the lug 31' of the latch member 28 so that the latch member is moved from the position shown in Figs. 6 and 8 to the position shown in Figs. 5 and 7 and in doing this the lug 33 wipes by the lug 34-, of the armature and comes to a position where it interlocks with such lug 3 f, whereby the latch-holding element II will be locked against movement so as to hold the door when again closed. The return movement of the parts is limited by the; latch member 28 engaging with the lug 13 or stop on the partition in the casing. The terminals 41 and t2 of the electro-magnet windings are connected with the

binding posts

17 and 18 and the push button wires of the electric circuit are also connected with these binding posts.

From the foregoing description taken in V connection with the accompanying drawings, the advantages of the method of operation and of the device shown will bereadily understood by those skilled in the art to sis which the invention appertains, and while I have described the device which I new consider to the the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative, and that such 7 changes may be made when des red as are within the scope of the appended claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:-

1. In a device of the class described, the r combination of a spring-returned latchengaging element, a pivoted member adjacent thereto, a slot and pin connection between the element and member, a pivoted latch member having lugs between which the free end of the said pivoted memberen-.

gages, and an electro-magnet having an armature with whlch the latch member normally engages to normally preventmovement of the said members and latch-engaging element. v

2. In a device of the class described, the combination of a latch-engaging element, a member pivoted at one end and operatively connected at a point between its ends with the element, a latch member pivoted at one end and having at its pivoted end spaced lugs between which the free end of the firstmentioned member engages, and electrically operated means normally holding the latch member against movement.

3. In a device of the class described, the

combination of a spring returned latch engagingelement, an electro-magnet including an armature and means between the element and armature for normally holding the elementagainst movement, said means including a pivoted member a slot and pin connection between the member and element, a fixed stop for limiting the'movement of the member, a pivoted latch adapted to releasably engage the armature, operative connections between the said members, whereby the latch member moves with the first-mentioned member, and a fixed stop with which the latch member engages for limiting the'return movement of the members and said'element.

4:. A device'of-the class described comprising a casing having a partition formed of two sections disposed out of alinement and united by a connecting portion, a latchengaging element mounted in the casing, a member pivotally connected with one section of the partition and having its free end extending over the other section of the partition, the movement of the member in one direction being limited by the connecting portions between the sections of the partition, a slot and pin connection between the member and element, an electro-magnet in the casing and including an armature,

and a latch member mounted in the casing to engage the armature and operatively related with the member to prevent movement thereof while the armature is in normal position and adapted to be restored to engaging position with the armature by the said first mentioned member.

5. In a device of the class described, the

combination of a casing, a partition therein, a latch member mounted on the partition, a second member mounted on the partition, stops on the partition for the respective members, an electro-magnet having an armature disposed to normally hold the latch against movement, lugs on one of the members for engagement with the free end or" the other member, a door latch engaging element having a pivotal movement on an axis eccentric to the pivotal center of the second-mentioned member, and a slot and pin connection between the said element and second-mentioned member.

6. In a device of the class described, the combination of a door latch engaging element, a pivoted member, a slidable connection between the element and member, a latch member underlying and parallel with the first mentioned member and having spaced lugs extending from one side to receive between them the free end of the first mentioned member and having a lug extending from the opposite side, an electromagnet having an armature adapted to engage the last-mentioned lug to prevent movement of the latch member, stop means for limiting the movement of the said members, and a spring operatively related to the said element for holding the same yieldingly in normal position.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK F. SCHNEIDER.

Witnesses:

LoUIs J AFFEE, GEO. E. BENEDICT.

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