US2404880A - Adjustable ship curve - Google Patents

Description

July 30, 1946.

4 Is Z0 FIG.!

G. LATEUR 2,404,880

ADJUSTABLE SHIP CURVE Filed March 2'7, 1944 3AF|C5.3.

FlGuB,

IN V EN TOR. ms' wv Z. 47502 14 T T GENE Y5 Patented July 30, 1946 UNITED STATES PATENTL'OFFICE i, ".2 Claims.

.The ipresent invention relates. to improveements in an, adjustableshipcurve, and .it con- .SiSts of-the.combinations, t onstructionsand arrangements hereinafter described andclaimed.

An object of my invention is to provide an adjustable. ship;curve which is an improvement over my copending application on an adjustable ship curve, Serial No. 520,349, filed January 29,

, .4944. I In the copending case I show a .base with 'ctWO parallel bars. and shoes mounted between .the bars andrslidable ;therealong. A flexible ruling member is adjustably connected tothe shoes by extensible members that maintainthe desired curve in the member. In the present invention I disclose a base comprising a single elongated. member. Sleeves are. slidablymounted A. further object of my invention is'to provide.

a device of the type described in which the flexible rulingmember. is held .atthe desired slant with respect to the paper on. which the ship curve is to be drawn so; that .abetter defined r ruling edge will be presented, along .which. the pencil or inking, pen may be moved whendrawing the curve.

A. further object of my invention is to ,pro-

vide a devicegsimplein construction and. durable and efficient forthe purpose intended.

Other object and advantages willappear in the following specification, and the novel fea- -tures of ,the device will be. particularly pointed out in the appended claims.

My invention isillustrated in the accompanying drawing forming a part of; this..application, in which:

Figure 1 is a plan view of the device;

Figure 2 is an enlarged transverse section taken along the line 2-2 of Figure 1;

Figure 2A is a transverse section through the flexible ruling member;

Figure 3 is an end view of a modified form of the invention;

Figure 3A shows another modified form of the device;

Figure 4 illustrates still another modified form of the invention;

Figure 5 is a sectional view through a slightly modified form of the device shown in Figure 4; r

Figure 6 is a plan view of Figure 5;

Figure 7 is a bottom plan view of a modified form of sleeve.

Figure 8 shows another modified form of the sleeve; and

. Figure 9 is an isometric view of another form of sleeve.

While I have shown only the preferred forms of my invention; it should be understood that various "changes. or..modification may be made withinthe-scope of-the appended claims without departing fromthespirit and scope of-the-invention.

In carrying out, my inventionl provide a base indicated generally at A and this base has a flat underside .land a curved upper surface 2,

.see Figure 2.1,Thebase-A is -supported by rub- .ber sleeves 3,4 and see Figure 1., that'supon the member and in turn; rotatably support extensions that hold thesflexible. ruling member. in the desired shape.

. port the. base a slight. distance above the supporting surface 5.. The rubber sleeves prevent slippage of. the base :over the supporting surface.

I show .fah-rflexible ruling member 3 in both Figures ,lwand 2,.and one end of the member is secured to. the-base A "by a screw 1 that is threaded; through an upright 8 carried by the base. .NutsHS and ID are threaded on the screw .1 and hold thescrew against lateral movement with-respect to thevupright 8. vNut- 9 also acts as .a-spacing member between thehfiexiblerule .B and the, upright.

The flexible ruling member B has alength substantially coextensive with the length ofthe .baseAand the, rule is anchored to the base at 30.

. for guiding a pencil or ,a ruling pen.- Each openinghas a countersunk recess I3 in the rear wall l3a of the rule and a countersunk recess M in the front wall Ma of the rule. A screw I5 is received in the opening H and the screw has a head 16 that is received in the countersunk portion I4. A nut I1 is mounted on the screw and is received in the countersunk portion [3. In this way the screws are rigidly secured to the rule B. It is possible to pivotally secure the screws to the rule in the same manner shown in my copending application.

Still referring to Figure 2, it will be noted that the screw I5 is received in a threaded sleeve 18; The sleeve has a head l9 and an eyelet 20 is rotatably mounted on the sleeve and bears against the head I9. An outer threaded member 2| is screwed upon the sleeve l8 which is threaded on its exterior surface for this puras shown in Figure 1.

' lar parts.

pose. The outer member bears against the opposite side of the eyelet.

The eyelet has a shank 22 that is passed through the opening 23 formed in a tongue 24. The tongue extends from a sleeve or a shoe 25 that slides along the base A. The shoe 25 is shaped to contact with the surfaces l and 2 of the base and sufiicient friction is developed between the sleeve and the surfaces tohold the shoe in adjustedposition.

A nut 26, see Figure 4, is threaded upon the shank 22 ofthe eyelet 20 and the nut bears against the top of the tongue 24. A second nut 21 is threaded upon the lower portion of the shank and has a shoulder 28 adapted to enter the opening 23 in the tongue and to contact with the under surface of the nut 22%. Theconstruction is such that the eyelet is rotatably secured to the tongue and the screw can swing about the vertical axis of the shank 22. At the same time the screw l5 can be extended or retracted for moving the flexible rule B the desired distance toward oraway from the base A. I

A number of the shoes 25and screws are provided and these are spaced along thebase A, The screws [5 pivot on the shank 22 and they can be extended for giving the flexible ruling member B the desired curve, for example, the curve illustrated in Figure 1.

In'Figu re 3 I show a, slightly modified form of the invention. In this form the base C'is square in cross section and the shoes a are also square.

supporting means for the screw l5 are the same,

so like reference numerals will be applied to simi- The supporting rubber members 29 for the base C hold the base so that a lower corner is spaced above the supporting surface.

struck up from the shoe portion as is true with the shoes 25, 25a and 251), but instead is placed in a recess 30 formedin the shoeor sleeve 25c and is welded or otherwise secured in the recess.

The form of the device shown in Figures 5 and 6 is similar to that shown in Figure 4 with the exception that the sleeve or shoe 3! is split as at 32'and is more narrow in thickness. The

tongue 33 is of a thicker material and is welded or otherwise secured to the sleeve. In-Figure '7 the tongue 3 1 is formed from a struckup portion from the sleeve 35. In all other respects the device shown in Figure 7 is the same as that shown in Figure 5.

It is possible to use a base E that is oval in cross section and in this event the shoe or sleeve 36 is also made oval. The sleeveor shoe carries a tongue 31 for supporting the other parts of the device.

In Figure 9 I show an isometric view of a modified form of sleeve or shoe. In this view the sleeve 38 is larger than the base D and the sleeve has end members 39 that are curved toward each other and are provided with recesses 49 for slidably receiving the sides of the base D. The edges of the recesses are the sole contacting surfaces between the sleeve and the base and this reduces friction. The end members 39 have openings 4| which may receive ball-bearings (not shown), thatcan ride on the sides of the base D for reducing the friction still further, if that. is desired.

I claim: I I

1. In a device of the type described, an elongated rigid base having a curved upper portion tongue and sleeve, an extensible member carried by each connector, and a flexible ruling member carried by the extensible members and being held in the desired shape by the extensible members.

2. In an adjustable ship curve, an elongated base, .a shoe slidable therealong, an eye-piece rotatably carried by the shoe, a sleeve rotatably carried by the eye-piece'and having its longitudinal axis swingable in a horizontal p1ane;the

' interior of the sleeve being threaded, a screw received in the sleeve and being longitudinally advanced or retracted as the sleeve isrotated in one direction or the other in the eye-piece, and a flexible ruling member secured to one end of the screw, said member having a countersunk opening for receiving the screw, said screw having a head receivable in the countersunk opening, said member having an annular shoulder on the opposite side from the countersunk opening and being'aligned therewith, and a nut mounted on the screw and bearing against the shoulder.

GASTON L. LATEUR.

Images