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Publication numberUS1869962 A
Publication typeGrant
Publication dateAug 2, 1932
Filing dateMar 10, 1930
Priority dateMar 10, 1930
Publication numberUS 1869962 A, US 1869962A, US-A-1869962, US1869962 A, US1869962A
InventorsGolden Robert F
Original AssigneeNat Lock Washer Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Speed indicator
US 1869962 A
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Description  (OCR text may contain errors)

R. F. GOLDEN SPEED INDICATOR Filed March 10. 1930 jg' .l

LVT

Aug. 2", 1932.

ATTORNEY 15 and the socket.

Patented. Aug. 2, 1932 srica ROBERT F. GOLDEN,*OF`SOUTH ORANGE, NEW JERSEY, ASSGNOR TO *TI-IE NATIONAL LOCK WASHER COMPANY, OF NEWARK, NEVJ JERSEY, 'A CORPORATEGN 0F NEW JERSEY y SPEED INDCA-'IOR Application led March 10, 1930. Serial No. 434,532.

This invention relates to a novel and im- Y proved form of speed indicator, particularly `adapted for usek with outboard motor boats, and the novel features will be bestuuyl derstood from the following description and the annexed drawing, in which:

Fig. 1 is an elevation of a boat having one form of the invention applied thereto.

Fig. 2 is a view showing the indicator in V side elevation.

Fig. 3 is a plan view of the structure shown in Fig. 2.

Fig. 4 is a view showing the coacting relation between the fitting on the indicator Fig. 5 is a view on an enlarged scale showing a section through a portion of the hull bottom.

Fig. 6 is a section on the line` 6-6 of Fig. 5.

Fig. 7 is a view showing the impact tube of Fig. 5 used with a different kind of fitting.

Fig. 8 is a view on the line 8-8 of Fig. 7.

The invention is shown as embodied in a and it comprises an indicator 2 which may be mounted on the instrument board 3 of the boat. The indicator is preferably mounted detachably so that it may be easily removed when the boat is tied jup and out of use, in

order to avoid theft. F or this purpose a socket 4L is secured to -the instrument board having wings 5 forming together a wedgeshaped recess in which is received a coacting wedge 6 on the indicator.

Extending from the indicator is aflexible metal hose 7 which leads to an impacttube 8. In Fig. 5 this tube is shown as extending through a hole 9 in the bottom 10 of the boat hull. The hole is shown as receiving a fitting having a head 11 secured to the exteriorrof the bottom and having a` stein 12 extending to the interior of the hull. This stem is shown as being threaded to receive L5 a nut13 which, with the washer 14 and the head 11, secure the fitting in position. The fitting may be provided with projections 15 extending from the head into the material of the bottom to prevent accidental movement 0 of the fitting.

device for use with an outboard motor boat-1,`

The impact tube is provided with an opening 16 facing toward the bow of the boat, so that when the boat moves through the water the movement will cause` water to enter the impact tube and create a pressure in the hose '7 which will be transmitted to the indicator in a well-linown nninner. The tube is shown as of stream-line cross section where it projects beyond the boat, and this cross section is preferably extended for a distance into the litt-ing, and the hole in the fitting has a lower portion adapted to lit this stream-line configuration. By this arrange ment, the tube offers less resistance to the movement ofthe boat through the water, and it is also insured that the tube shall be placed always in the proper position in the fitting.

The lower portion 17 of the tube which has this stream-line cross section is preferably deformed from a tube having a circular cross section, and the upper portion 18 of the tube is left with this circular Cross section. This means that the portion having a stream-line cross section has one dimension greater than the maximum dimension of the portion 18 and, therefore, the upper portion 19 of the hole through the stem 12 must be made of larger diameter than the lower portion 20 of the same hole, the portion 2O being made of the same crosssection as the portion 1'? of the impact tube. A sleeve 21 is accord ingly secured to the portion 18 of the impact tube, to make a close lit with. the upper portion 19 of the 1nole through the stem of the fitting. rlhe sleeve may be secured to the tube i in any suitable manner, and its upper edge is preferably beaded over, as shown at 22. A gland nut 23 may be threaded to the stem 12 and aI suitable packing 2a may be used to insure against leakage, it being understood that the fitting is always below the load water line 25 of the boat.

In Figs. 7 and 8 l have shown another form of fitting 26 which, in this form, issecured to theexterior of the hull and has a hole 27 therethrough extending vertically, as does the hole through the stein 12. ln this form a spring 28 is provided which vengages the bead 22 to secure the tube in position in theV 8 is more particularly described and claimed in the copending application of Irvin W. Masters, Serial No. 398,874.

From the above, it will be seen that I have provided a form of speed indicator which can be detachably used either inboard or outboard of a boat, the attachment or detachment being effected readily and without fear of the impact tube being inserted in the wrong position.

The tube is preferably made of light-weight material so that upon colliding with rocks or other obstructions it will bend or break Without damage to the boat. At the same time, the device may be made efficiently and at a reasonable cost and may be easily applied to existing boats.

l. In combination, a boat hull having a fitting with a hole therein below the load line, a. speed indicator, means to secure said indicator to said hull, an impact tube extending through said hole and having an opening, a tube connecting the impact tube to the indicator, and coactinfr means on said impact tube and fitting preventing insertion of the impact tube in thev hole except with said opening facing the bow of the boat.

2. In combination, a boat hull having a fitting with a vertically extending hole therethrough, said hole having a portion thereof non-circular in cross section, and an impact tube extending through said hole and having a. non-circular portion disposed in, and of the same form as, said non-circular portion of the hole, said form being such that the tube may be placed in the fitting in one position only.

3. In combination, a boat hull having a fitting with a vertically extending hole therethrough, said hole having the lower portion thereof non-circular in cross section, an impact tube extending through said hole and having a lower non-circular portion of the same form as said non-circular portion of the hole and an upper portion spaced from the walls of the hole, and a sleeve surrounding the portion of the tube above said non-circular portion and filling the space between the tube and the walls of the hole.

4. In combination, a boat hull having a fit-r ting with a vertically extending hole therethrough, said hole having the lower portion thereof non-circular in cross section, an impact tube extending through said hole and having a lower non-circular portion of the same form as said non-circular portion of the hole and an upper portion spaced from the walls of the hole, a sleeve surrounding the portion of the tube above said non-circular portion and filling the space between the tube and the walls of the hole, and means securing the tube in the hole.

5. In combination, a boa-t hull having a fitting with a vertically extending hole therethrough, said hole having the lower portion thereof non-circular. in cross section, an impact tube extending through said hole and having a lower non-circular portion of the same form as said non-circular portion of the hole and an upper portion spaced from the walls of the hole, said non-circular portion of the tube having one dimension greater than the largest dimension of the tube above the non-circular portion, and a sleeve surrounding the portion of the tube above said non-circular portion and filling the space between the tube and the walls of the hole.

6. In combination, a boat hull having a fitting with a vertically extending hole therethrough, said hole having the lower portion thereof non-circular in cross section, an impact tube extending through said hole and having a lower non-circular portion of the saine form as said non-circular portion of the hole and an upper portion spaced from the walls of the hole, said non-circular portion of the tube having one dimension greater than the largest dimension of the tube above the non-circular portion, a sleeve surrounding the portion of the tube above said noncircular portion and filling the space between the tube and the walls of the hole, and a gland surrounding said sleeve and secured to said fitting.

7. In combination, a boat hull having a fitting with a vertically extending hole therethrough, said hole having the lower portion thereof non-circular in cross section, an impact tube extending through said hole and having a lower non-circular portion of the same form as said non-circular portion of the hole and an upper portion spaced from the walls of the hole, and a sleeve surrounding the portion of the tube above said non-circular portion and filling the space between the tube and the walls of the hole and secured to the tube, for the purpose set forth.

8. In combination, a boat hull having a fitting with a vertically extending hole therethrough, said hole having the upper portion thereof circular and the lower portion thereof non-circular in cross section, an impact tube extending through said hole an d having the upper portion thereof circular and a lower non-circular portion of the same form as said non-circular portion of the hole, said non-circular portion of the tube having one dimension greater than the circular portion thereof, and a sleeve surrounding the circular portion and filling the space between the tube and the walls of the hole.

ROBERT F. GOLDEN.

ICU

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3095738 *Dec 13, 1960Jul 2, 1963Salo William GMarine speedometers
US3789868 *Dec 3, 1971Feb 5, 1974Iplex Plastic Ind Pty LtdFluid outlet for pipes
US4622850 *May 10, 1985Nov 18, 1986Gaffrig James WMarine pitot tube
US4718273 *Dec 31, 1985Jan 12, 1988The Garrett CorporationCombination alpha, static and total pressure probe
US5025661 *Dec 11, 1989Jun 25, 1991Allied-Signal Inc.Combination air data probe
Classifications
U.S. Classification73/182
International ClassificationG01P5/14
Cooperative ClassificationG01P5/14
European ClassificationG01P5/14