US2470396A - Spur shore - Google Patents

Description

May 17, 1949.

Filed NOV. 14, 1944 J. D. GUERETTE 2,470,396

SPUR SHORE 2 Sheets-Sheet l I n ventor Jase biz D. Guerefl aha Wave Ema y 1949- J. D. GUERETTE 2,470,396

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Inventor dime b5 Gu'erefla' WW 3m Patented May 17, 1949 UNITED STATES PATENT 2,470,396

suiting I I Joseph D. Guerett'e', Bnunswick,-Mai-iie 9" Application November 14, IMQSei'i'al K055633491 My invention relates to improvements-mysecalled spur shores such as are usedinship launching ways to brace the ground ways-{the primary object in view beingto providedr simple form of lasting brace to take the place o'i tl-ie 1 usual wooden spur shores, and which is easier to apply, Without nailing, quicker to install, adapted for extension and contraction, as occasion may require, and is inexpensive to manufacture.

Other and subordinate objects, also comprehended by my invention, together with the precise nature of my improvements and the advantages thereof, will be readily understood when the succeeding description and claim are read with reference to the drawings accompanying and forming part of this specification.

In said drawings:

Figure 1 is a view partly in transverse section and partly in rear elevation illustrating my improved spur shore applied in a ship way,

Figure 2 is a view in side elevation of the spur shore of my invention detached,

Figure 3 is a View in plan,

Figure 4 is a view in longitudinal section, taken on the line 44 of Figure 3, and drawn to an enlarged scale, and

Figure 5 is a view in transverse section, taken on the line 5--5 of Figure 4.

Referring to the drawings by numerals, my improved spur shore, as shown, comprises a pair of telescopically arranged pipe sections including a female section I and a male section 2, having inner ends telescoping for a, distance suitable for a purpose presently clear, said sections I, 2 being provided with outer fiat ends 3, 4 of double thickness of the metal from which the sections are formed and inclining laterally of said sections toward one and the same side of the device with rounded terminals 5, 6.

The female section I is provided with a. longitudinal slot 1 therein and with a. pair of elongated external flanges 8 extending along opposite sides of said slot 7. A substantially oval cam 9 is swingably mounted between the flanges 8 by a pivot pin I6 extending through one end of said cam 9 and into said flanges 8. The cam 9 is arranged to extend through the slot 1 into the female section I and to be swung inwardly of said section I to slidably engage the other end of the cam with the inner end of the male section 2 so as to force said sections I and 2 apart and extend the length of the spur shore. A handle II is provided on the cam 9 to abut the female section I when said cam is swung inwardly and "2'1. tlierebyestabli'sh thelimitof inward movement of thecamt "A presser plate I-2 of L-shap-e in cross section is swingably moun-t'edon the end-9 of the female 'sectiond'by -meansof a pair oflaterally spaced ears I3 on the back of said plate, and a pivot pin I4 extending through said ears and through the terminal 5 of said end 3. The presser plate I2 is provided, as shown in dotted lines in Figure 2, with a pair of diverging bottom prongs I5 terminating in right angled teeth I6.

The outer end 4 of the male section 2 is provided with an anchor plate I1 swingably mounted on said end 4 by means of a pair of laterally spaced ears I8 on the back of the plate, and a pivot pin I9 extending through said ears and the terminal 6 of said end 4. The anchor plate I! is provided with a plurality of bottom calks I 9. The anchor plate I1 is preferably of elongated rectangular form and arranged to extend endwise longitudinally of the section 2. The calks 26 are preferably arranged in pairs laterally spaced and located adjacent opposite ends of said plate H.

In Figure 1 of the drawings, my improved spur shore has been shown as applied in a conventionally illustrated ship launching Way, 2| designating the usual ground ways, 22 the usual sliding ways for supporting a ship hull 23, and 24 the usual ribbons or guides extending along the upper outer corners of the ground ways 2I and which present right angled outer lower corners 25. As clearly shown in said figure, the shores are applied with the presser plate I 2 fitted over said corners, or edges, 25 so that the prongs I5 underlie said ribbons and the teeth I6 will bite into the same, the sections I, 2 being extended downwardly and laterally with the anchor plate I7 resting on the flooring 26 of the Way and the calks I9 thrust into said flooring. As will be apparent, by means of the cam 9, the sections I, 2 may be extended to tighten the presser plate I2 against the ribbons 24 and thrust the calks into the flooring 26. By swinging the cam 9 outwardly of the female section I, the male section 2 will .be released so that said section may be contracted to facilitate removal of the device.

As will be observed in Figure 4, the cam 9 is arranged so that under end thrust of the male section 2 against the camming end of the cam, it will be swung inwardly of the section I into an overthrow past dead center position in its limit of movement inwardly of said section I, whereby said cam is prevented from working outwardly of the section, into a releasing position, but may be swung into releasing position by means of the handle H.

The foregoing will, it is believed, suffice to impart a clear understanding of my invention without further explanation.

Manifestly, the invention, as described, is susceptible of modification without departing from the inventive concept, and right is herein reserved to such modifications as fall within the scope of the appended claim.

What I claim is:

A device of the class described for forming a brace between the floor of a ship way and an upper edge of a ground way comprising a pair of pipe sections having telescoping inner ends whereby the device is adapted to be extended and contracted, a right angled pressure plate on the outer end of one section adapted to fit against said edge, an anchor plate on the outer end of section for camming engagement with the inner end of the other section, said cam being constructed and arranged to be swung inwardl of said one section under thrust of the other section against the said cam and into an overthrow past dead center position against said one section whereby said cam is prevented from swinging out of camming engagement with the inner end of the said other section.

JOSEPH D. GUERETTE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 206,231 Deeds July 23, 1878 891,897 Astrom June 30, 1908 975,566 Norton NOV. 15, 1910 1,681,192 McBride Aug. 21, 1928 1,752,472 Whitney Apr. 1, 1930 1,851,489 Brook Mar. 29, 1932 2,162,181 Skinner June 13, 1939 2,363,752 Scott Nov. 28, 1944

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