Model airplane jig

• US 4,949,944 A
• Filed: 05/25/1989
• Issued: 08/21/1990
• Est. Priority Date: 05/25/1989
• Status: Expired due to Fees

• Current Assignee: James Groff Sr
• Original Assignee: James Groff Sr
• Inventors: Groff, James Sr.
• Primary Examiner(s): Watson, Robert C.
• Application Number:
  US07/356,499
• Time in Patent Office: 453 Days
• Field of Search: 254/DIG. 1, 269/45, 269/69, 269/71, 269/76, 269/75, 269/296, 269/17
• US Class Current: 269/45
• CPC Class Codes: B25B 11/02 Assembly jigs
• CPC Class Codes: B25B 5/003 Combinations of clamps
• CPC Class Codes: B25B 5/006 Supporting devices for clamps
• CPC Class Codes: B25H 1/0007 for engines, motor-vehicles or bicycles
• CPC Class Codes: F02B 1/04 with fuel-air mixture admission into cylinder

Abstract

A model airplane jig is disclosed which is particularly adapted to support a model gasoline engine airplane in substantially any position or orientation so that repairs can be made to the same. The jig includes a weighted base and a vertical post extending upwardly therefrom. A horizontal beam is pivotally connected to the top of the post through a ball joint and trunnion with the connection being radially offset from the axis of the post. Front and rear wheel clamps adjustably mounted adjacent the ends of the horizontal beam attach to the wheels of an airplane and secure the plane to the jig.

Claims

1. A model airplane jig comprising:

a weighted base;

a vertical post extending upwardly from said base;

an elongated main beam;

means connecting said main beam intermediate the ends thereof to the top of said vertical post;

said connecting means permitting said beam to be movable between a first position wherein it is located substantially above said vertical post and a second position wherein it is inverted and located at a position horizontally spaced from said vertical post;

a rear support means adjustably connected to one end of said main beam, said rear support means including means for clamping the rear wheel of a model airplane;

a secondary cross beam adjustably connected to the other end of said main beam and being substantially perpendicular thereto;

left and right forward support means adjustably connected to either end of said second cross beam, each of said forward support means including means for clamping a different one of the two front wheels of a model airplane,

each of said support means including a saddle member for supporting the underside of the wheel and a pair of adjustable clamping elements adapted to hold the top of the wheel.

2. The invention as claimed in claim 1 wherein said vertical post is comprised of two telescoping members for adjusting the height thereof.

3. THe invention as claimed in claim 1 wherein said main beam is comprised of two telescoping members for adjusting the length thereof.

4. The invention as claimed in claim 1 wherein said base includes a plurality of adjustable levelers thereon

5. The invention as claimed in claim 1 wherein said left and right forward support means are movable toward and away from each other.

6. The invention as claimed in claim 1 wherein said connecting means includes a ball joint.

9. The invention as claimed in claim 1 further including a pair of substantially U-shaped fuselage supports extending upwardly from said main beam for supporting the fuselage of the plane.

7. A model airplane jig comprising:

a weighted base;

a vertical post extending upwardly from said base;

an elongated main beam;

means connecting said main beam intermediate the ends thereof to the top of said vertical post;

said connecting means permitting said beam to be movable between a first position wherein it is located substantially above said vertical post and a second position wherein it is inverted and located at a position horizontally spaced from said vertical post;

a rear support means adjustably connected to one end of said main beam, said rear support means including means for clamping the rear wheel of a model airplane;

a secondary cross beam adjustably connected to the other end of said main beam and being substantially perpendicular thereto;

left and right forward support means adjustably connected to either end of said second cross beam, each of said forward support means including means for clamping a different one of the two front wheels of a model airplane,

said connecting means including a tab extending upwardly and outwardly from the top of said vertical post and wherein said main beam is pivotally connected to said tab.

8. The invention as claimed in claim 7 wherein said connecting means includes a ball joint between said main beam and said tab.

10. The invention as claimed in claim 7 wherein said vertical post is comprised of two telescoping members for adjusting the height thereof.

11. The invention as claimed in claim 7 wherein said main beam is comprised of two telescoping members for adjusting the length thereof.

12. The invention as claimed in claim 7 wherein each of said support means includes a saddle member for supporting the underside of the wheel and a pair of adjustable clamping elements adapted to hold the top of the wheel.

13. The invention as claimed in claim 7 wherein said base includes a plurality of adjustable levelers thereon.

14. The invention as claimed in claim 7 wherein said left and right forward support means are movable toward and away from each other.

15. The invention as claimed in claim 7 wherein said connecting means includes a ball joint.

16. The invention as claimed in claim 7 further including a pair of substantially U-shaped fuselage supports extending upwardly from said main beam for supporting the fuselage of the plane.