Mechanical Trimming Means (Patent No: 542997)

Inventor: Havilland Aircraft of Canada Ltd. (assignee)

Location: Toronto, ON

Comments: N/A

Description: Issued July 2, 1957

Kazimierz Korsak, Edmonton, Alberta, Canada, assignor, by mesne assignments, to de Havilland Aircraft of Canada Limited, Toronto, Ontario, Canada. Application June 19, 1950. Serial No. 602,497.
3 Claims.

1. In a mechanical trimming means, a cylinder, a cylinder extension integral with said cylinder, said cylinder being open at one end and having a shoulder formed within the opposite end thereof, and said cylinder extension forming a restricted passage leading backward from said cylinder, a plunger within said cylinder, a compression spring accommodated within said cylinder, pressure plates located at each end of said compression spring, one of said pressure plates resting against said shoulder within said cylinder and toeing free to move forward within said cylinder, said cylinder having an annular cut-out towards the open end thereof, a ring engaged in the annular cut-out in said cylinder, and the other of said pressure plates engaging said ring and being free to move rearward therefrom, said plunger extending through said compression spring and through said pressure plates, and nuts fixedly secured on said plunger adjacent the outer faces of said pressure plates for engaging either of the latter upon pressure being applied to said plunger from either direction, and a cover sleeve extending over the open end of said cylinder and being secured to said plunger.

2. In a mechanical trimming means a cylinder, a cylinder extension integral with said cylinder, said cylinder being open at one end and having a shoulder formed within the opposite end thereof, and said cylinder extension forming a restricted passage leading backward from said cylinder, a plunger within said cylinder, a compression spring accommodated within said cylinder, pressure plates located at each end of said compression spring, one of said pressure plates resting against said shoulder within said cylinder and being free to move forward within said cylinder, said cylinder having an annular cut-out towards the open end thereof, a ring engaged in the annular cut-out in said cylinder, and the other of said pressure plates engaging said ring and being free to move rearward therefrom, said plunger extending through said compression spring and through said pressure plates, and nuts fixedly secured on said plunger adjacent the outer faces of said pressure plates for engaging either of the latter upon pressure being applied to said plunger from either direction, a retainer plate, a cover sleeve fixedly secured to said retainer plate and closing the open end of said cylinder, said cover sleeve being of a flexible material and secured to the outer surface of said cylinder towards the rear thereof, a fitting secured to said retainer plate, and said plunger on said fitting having a hole therethrough, and the end of said cylinder extension having a hole therethrough permitting the trimming means to be connected to two bodies rendering the same adaptable for the positioning of the bodies in direct relationship with one another and in which deflection thereof in one direction or another occurs upon force being applied thereto.

3. In a mechanical trimming means, a cylinder, a plunger extending into said cylinder, compression springs accommodated within said cylinder, pressure plates fixedly secured with respect to said plunger and abutting the outer ends of said compression springs, stop means in said cylinder abutting the outer surfaces of said pressure plates, said stop means preventing outer movement in either direction of said pressure plates and simultaneously permitting the latter to move inward in either direction upon compression of said compression springs, a cover sleeve secured to the outer portion of said plunger and enclosing the end of said cylinder, and said cover sleeve being of a flexible material permitting said plunger to move inwardly or outwardly with respect to said cylinder.