Browse Prior Art Database

Latch Mechanism

IP.com Disclosure Number: IPCOM000090823D
Original Publication Date: 1969-Jul-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Goplen, FA: AUTHOR [+4]

Abstract

The latch mechanism is used to lock access door 10 in place and is actuated by rotating latch handle 11 upwardly. Handle 11 is pivotally mounted to frame 12 by pin 13 extending through parallel ribs 12a of such frame. Latch member 14 is rotatably mounted on frame 12 by bin 15. Grasshopper spring 16 extends around pin 15 and has one end 16a overlying member 14. Its other end 16b is held by retainer 17 fixed on frame 12. Member 14 is formed with projection 18 having slot 19 in it for receiving pin 20. This is fixed to machine frame 21 on which door 10 is hingedly mounted. Member 14 has cam portion 22 to be contacted by boss portion 23 of handle 11. Spring 24 extends around pin 13 and has its ends in contact with handle 11 and a part of frame 12 for yieldably holding handle 11 flush with door 10.

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Latch Mechanism

The latch mechanism is used to lock access door 10 in place and is actuated by rotating latch handle 11 upwardly. Handle 11 is pivotally mounted to frame 12 by pin 13 extending through parallel ribs 12a of such frame. Latch member 14 is rotatably mounted on frame 12 by bin 15. Grasshopper spring 16 extends around pin 15 and has one end 16a overlying member 14. Its other end 16b is held by retainer 17 fixed on frame 12. Member 14 is formed with projection 18 having slot 19 in it for receiving pin 20. This is fixed to machine frame 21 on which door 10 is hingedly mounted. Member 14 has cam portion 22 to be contacted by boss portion 23 of handle 11. Spring 24 extends around pin 13 and has its ends in contact with handle 11 and a part of frame 12 for yieldably holding handle 11 flush with door 10.

In order to disengage the latch mechanism, handle 11 is rotated upwardly about pin 13 so that its boss portion 23 contacts cam portion 22 and rotates member 14 in the counterclockwise direction so as to disengage slot 19 with respect to pin 20. If it is desired that handle 11 be nonoperative with respect to member 14, holes 25 are provided in ribs 12a for receiving a pin through it to limit motion of latch 11. Pin 15 is provided with screwhead 26 so that a screwdriver can be used to rotate member 14 to disengage it with respect to pin 20. If pin 20 is located on the opposite side, projection 18a having slot 19a in it can be provided on the opposite side of m...