US2059345A

US2059345A - Motor retard

Info

Publication number: US2059345A
Application number: US3261A
Authority: US
Inventors: Frederick G Hawney
Original assignee: Individual
Current assignee: Individual
Priority date: 1935-01-24
Filing date: 1935-01-24
Publication date: 1936-11-03
Anticipated expiration: 1953-11-03

Description

, Nov. 3, 1936. F. G. HAWNEY 2,959,345

' MOTOR RETARD Filed Jan. 24, 1955 INVENTOR Patented Nov. 3, 1936 NITED STATE$ Mam OFFICE 5 Claims.

My present invention relates to improvements in motor retard. This invention relates to attachments for outboard motor, especially for those used for retarding the speed of the boat. I-Iithertofore all attachments have consisted of some device hooked. behind the motor to act as a drag to retard the speed of the boat. This not only adds to the load imposed upon the motor but increases the consumption of gasoline as well; especially when compared to the mileage covered.

In my device the speed is retarded not so much by adding a heavy load or drag to be towed through the water but it is in the form of a small detachable bafiie which may be attached to the motor in front of the propeller which prevents the free flow of the water to the propeller in this way causing less solid water for the propeller to push against to drive the boat forward. This greatly relieves the load on the motor and has been found to lessen the consumption of gasoline to a great extent.

The baliie is adjustable so as to allow more or less water to flow to the propeller. The arrangement of the baffle is also such so as to direct the water into the water intake of the motor so it may obtain all the cooling water necessary even at the reduced speed of the motor.

I accomplished these and other objects by the peculiar arrangement and combination of the parts as will be more fully explained in the accompanying specifications shown in the drawing and finally pointed out in the appended claims.

In the drawing:

Fig. 1 is a perspective of the front of my device.

Fig. 2 is a side view of an outboard motor with my device attached thereto.

Fig. 3 is a fragmentary view of the back of an outboard motor with my device attached thereto.

Fig. 4 is a. section upon the line 4-4 of Fig. 2.

Referring more particularly to the

drawing reference numerals

5 and 6 represent two plates or bafiies semicircular in shape as shown. 1 and 8 represent U-shaped clamps with turned out flanges 9, these clamps are secured to

plates

5 and 6 as shown in Fig. 1 by means of screws or bolts Ill. The holes II in the

plates

5 and 6 are elongated in shape as shown so the plates may be separated as indicated by the dotted lines 50. and 6m. I2 is a clasp hinged to plate 6 as at l3 so it may be folded out as indicated in dotted lines IZa. (Fig. 4). The other end of clasp is slotted as shown at M (Fig. 3). i5 is a slot in plate 5 adapted to receive a bolt l6 (Fig. 4) provided with a thumb nut ll. The slot [4 in clasp l2 registers with slot IS in plate 5 so when bolt I6 is slid to the right (Fig. 3 and Fig. 4) it will engage clasp I2 and hold it in place. When bolt I6 is brought to the left it will disengage clasp l2 and permit it. to be folded. out. The entire device is forced on the outboard motor from its front edge and immediately in front of the propeller as shown in Fig. 2 and clasped in place by means of clasp l2 as shown and the thumb nut ll tightened. The object of this clasp is to prevent the device from being forced off in case of back firing of the motor.

The method of operation is as follows: the device is first secured to the motor and clamped in place as previously mentioned. The

plates

5 and 6 are adjusted outward or inward by means of bolts Hi depending on how much it is desired to retard the speed of the boat and be securely clamped. As the motor is set in motion and the boat driven forward the full flow of the water is prevented from reaching the propeller but is forced outward as indicated by the arrows. The water forced upward by the baffles is deflected back by the shelf I8 of the outboard motor (Fig. 2) and into the water intake, l9, insuring the motor the necessary supply of cooling water at all times. More or less of a vacuum tends to be formed immediately behind the plates and around portions of the propeller; this has a tendency to hold the device in place as long as the boat is in motion. The U-shaped clamps l and 8 are generally sufficient to hold the device in place when the boatis at rest but the clasp I2 is used as a safeguard especially in the case of the backfiring of the motor.

The formation of the partial Vacuum and the scarcity of the water reaching the propeller causes it to turn very freely and drive the boat forward at a very slow rate of speed. Due to the lessened load on the motor, substantial savings in gasoline .are effected.

While I have shown and described a particular form of embodiment of my invention, I am aware that minor changes will readily suggest themselves to those skilled in the art without departing from the spirit and scope of my invention, which I have herein and above described. Having thus fully described my invention, what I claim is new and desire to protect by Letters Patent is:

1. A device of the type described consisting of baffles, and an outboard motor, means provided for said baflies for securing them to the frame of an outboard motor directly in front of the propeller.

2. A device of the type described consisting of bafiles, provided with means for attaching them to an outboard motor in such a manner that the movement of the Water due to the motion of the propeller will hold the baflies in place on the frame of the outboard motor in front of the propeller.

3. A device of the type described consisting of bafiles, U-shaped clamps (connecting said bafiles) for snapping them to the gear housing of an outboard motor in front of the propeller.

4. A device of the type described consisting of a pair of bafiies, U-shaped clamps for securing them to the gear housing of an outboard motor,