US1550919A - Rudder retainer - Google Patents

Description

Aug. 25, 1925. 1550,919

R. E. MrrToN RUDDER RETAI NER original Filed Feb. 20, 1925 Patented Aug. 25, 1925.

UNTTEU TATE PATENT OFFECE.

ROBERT ELVYN MI'I'TON, OF SALT LAKE CITY, UTAH.

RUDDER RETAINER. I ri.

Application filed February 20, 1923, Serial No. 620,229. Renwed April S, 1925.

T0 all whom t may concem.:

Be it known that I, ROBERT ELVYN MIT- TON, a citizen of the United States, residing at Salt Lake City, in the county of Salt Lake and State of Utah, have invented a new and useful Improveinent in Rudder Retainers, of which the following is a specification.

This invention relates to an improvement in the rudder' bar for the control of the rudder on aeroplanes.

One of the objects is to provide a rudder bar for aeroplanes that will stay in the position putby the pilotls feet after the feet have been removed, thus holding the rudder in the desired position wanted without the aid of the pilot.

Another object is to provide a rudder bar for aeroplanes that can be used as the ordinary rudder bar when desired to be.

VVith these and other objects in view my invention consists of the following construction of parts.

Referring to the drawings:

Figure 1 is a plan view of my inventlon showing the rudder bar broken.

Fig. 2 is a cross section view of the pedestal and cap.

Fig. 3 is a plan view of the pedestal.

Fig. 4 is a plan view of the rudder bar, rudder and wire connectons.

L denotes the rudder bar, 1 the shaft passing through the rudder bar L and the cap 2 on the pedestal 3. The inner end of the shaft 1 has a head 4 thereon. A spring 5 is placed over said stem and within said pedestal. /Vithin the cap 2 is placed a square hole for receiving the square 6 on the shaft 1. On the shaft 1 is placed another spring 7 which is located above the cap 2 and under the rudder bar L. The rudder bar is secured to the shaft 1 by means of the nut 8. The tension of the Springs is also Controlled by this nut.

Located on the side of the pedestal are two lugs 9' in which is swiveled a lifting .lever 9 which is held in the downward stroke by catching on the lug 11 located on the anchor rod 12. The pedestal and anchor rod are secured to the aeroplane fioor 13.

The upper face 15 of the pedestal 3 and the under face 16 of the cap 2 are notched to interlock each other thus holding them in the locked positi-on so placed by the pilot.

In the operation of my invention after it has been placed on the floor of the aeroplane and secured thereto, the wires 16 and 17 are attached and connected to the rudder 19 as shown in Fig. 4.

After the invention has been placed together as described, the nut 8 has been tightened on the shaft 1 and the required tension has been secured to the Springs 5 and 7. Now as shown the device will automatically lock itself to the pedestal and will be held within the notches 15 interlocking with the notches 16. If the pilot should move his right foot it would move the rudder bar to the right forward position and as soon as the foot was removed from the rudder bar it would remain in the position pushed b-y the pilots foot. And if the left foot pushed on the rudder bar it would be moved to the left forward position.

In the event that the pilot wished to use the rudder bar with his feet and free from the looking movement, lever 9 is moved downward and placed under the lug 11 on the anchor bar 12 as shown by dotted lines.

This movement will raise the cap 2 free from the notches and the pedestal thus leaving the rudder bar free to move at will.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is;

1. A rudder retainer for aeroplanes' of the character described, comprising a rudder bar, a pedestal having a cap thereon, an adjustable shaft within said pedestal, a lever attached to said pedestal, one end of said lever resting under said shaft within said pedestal, Springs on said shaft for holding said cap to said pedestal, one of said Springs within said pedestal, and the other of said Springs resting' on said cap and under said rudder bar, means on said shaft for securing said cap thereto so that said cap will turn with said shaft, means for looking and unlocking said cap to said pedestal, means for securing said rudder bar to said shaft and means for Operating said rudder from said rudder bar.

2. A rudder retainer for aeroplanes of the character described, comprising a rudder bar, a shaft, a pedestal and a cap for said pedestal, the upper face of said pedestal and the under face of said cap having notches thereon, said notches to interlock with each other, said rudder bar mounted on said shaft, said shaft secured within said shaft to unlock said Cap from said pedestal, means for holding said lever in an nnlocked position, means for seouring said rudder 10 bar to said shaft and means for Operating the rudder from said rudder bar.

In Witness Whereof I afix my signature.

ROBERT ELVYN MITTON.

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