Патент USA US3031221код для вставки
April 24, 1962 o. w. KROMER ETAL 3,031,211 FLEXIBLE MEANS CONNECTING BRANCH PIPES TO SPRAYER BOOMS Original Filed March 23, 1959 FE ORLANDO ENTORS. R OMER BYDA nwm 8. W931’ WW AT TORNE Y8 Uited States 3,031,211 atent Patented Apr. 24, 1962 1 2 3,031,211 tions being of greater diameter than the convolutions 8. ‘In practice, the external diameter of the drop pipe 10 is such that it is threaded into the position of FIG. 4 FLEXIBLE MEANS CONNECTING BRANCH PIPES T0 SPRAYER BOOMS Orlando W. Kromer, % 0. W. Kromer Co., 1120 Emer son Ave. N., Minneapolis 11, Minn, and Darwin S. against the yielding bias of the convolutions 8. Hence, Weist, Minneapolis, Minn; said Weist assignor to said accidental removal of the inner end portion 9 is materially discouraged in view of the fact counterclockwise move Kromer ments tend to increase the bite of the convolutions 8 - Continuation of application Ser. No. 801,204, Mar. 23, thereon. 1959. This application Apr. 27, 1961, Ser. No. 107,002 Coming now to the description of the boom clamping 4 Claims. (Cl. 285-115) 10 portion 5, it will be noted that the convolutions 13 are of substantially equal pitch, whereas the extreme inner Our invention relates generally to pipe connectors and more particularly to ?exible connections between branch end convolution 13a has a considerably increased or pipes and primary pipes or conduits; and this application greater pitch than that of the convolutions 13, whereby to de?ne therebetween (that is between the extreme in is in the nature of a continuation of allowed application 15 ner end convolution 13a and the adjacent convolution S.N. 801,204 filed March 23, 1959, now abandoned. 13b) an opening 13c having an axial dimension at least Still more speci?cally, our invention relates to and pro equal to the thickness of the wire from which our novel vides a novel ?exible connector particularly adaptable for connector is formed and for a purpose which will herein use in connecting sprayer nozzle-equipped drop pipes to after be fully explained. After formation of the convolu sprayer booms in mobile spraying equipment of the type 20 tion 13a, the wire from which our novel connector 2 is used in agricultural spraying and the like. formed, is bent to provide the boom clamping portion 5, The primary object of our invention is the provision which is in the nature of a yoke made up of a plurality of a device of the class immediately above described of laterally spaced loop-forming legs ‘14 and 15 and an which incorporates a minimum of working parts and is arcuate saddle portion 16. As shown, the wire forming considerably less expensive to produce than ?exible con- 25 the extreme inner convolution 13a forms a portion of nectors heretofore known. A further object of our invention is the provision of a device of the class immediately above described which the saddle 16 and from thence is bent upwardly to form the leg portion 1412 after which it is bent to form the may be installed in a minimum of time and with a mini mum of effort and which is rugged, durable, and com looped portion 214a and then the opposite leg portion 14c of the leg 14. From the leg portion 14c, the wire again pletely e?icient in its operation thereafter. 30 ‘forms a portion of the saddle 16, and successively the leg portion 1511, the loop 15a, the leg portion 150, and ?nally the spacer-anchoring hook 17. The above and still further objects of our invention will become apparent from the following detailed speci? cation, appended claims and attached drawings. Referring to the drawings wherein like characters indi cate like parts throughout the several views: As shown in FIG. 4, when the boom 1 is snugly re ceived between the legs 14 and 1S and seated upon the 35 saddle portion 16, the loops 14a and 15a respectively formed by their outer ends are aligned for the reception FIG. 1 is a fragmentary view in perspective of a sprayer of a nut-equipped clamping bolt 18 extending there boom incorporating our invention; through generally tangentially of the boom 1. FIG. 2 is an enlarged fragmentary View in side eleva As shown, the closed end portion ‘17a of the hook 17‘ tion as seen from left to right with respect to FIG. 1; FIG. 3 is a fragmentary view in side elevation of the 40 nestingly receives the convolution 13a, with the extreme tip 17b received snugly within the opening 13c and pro structure of FIG. 2 but showing the opposite side there jecting laterally outwardly therefrom. This arrangement of; and assures the convolutions 13a and 13b being maintained in a spread condition at all times and thus assures a FIG. 4 is .a view in vertical section as seen substantially from the line 4—4 of FIG. 2, some parts being broken away. 45 substantially constant width laterally opening mouth 19 in diametrically opposed relationship to the opening 130 Referring with greater particularity to the drawings, the and intermediate the convolution 13 and the boom 1 for numeral 1 indicates a conventional tubular spraying boom the reception of the intermediate portion of a ?exible associated with the mobile sprayer of the type used for conduit 20 having a connector 21 at its outer end for agricultural spraying and the like, not shown. The nu 50 screw-threaded engagement with the interior of the ex meral 2 indicates, in its entirety, our novel ?exible con treme inner end of the drop pipe 10 within the chamber nector for use with the sprayer boom 1. Preferably, as 12. At its outer end the flexible connector 20' is provided shown, the connector comprises an outer end portion 3, and inner end portion 4, and a boom clamping portion identi?ed in its entirety by the numeral 5, all of said por tions being formed from a single length of resilient wire, with a similar connector 22 which has screw-threaded en gagement with and is conhected to the interior of the boom 1 in axially or longitudinally spaced relationship to the yoke type clamping portion 5. the extreme outer end of which is identi?ed by the nu Our invention has been thoroughly tested and found to meral 6 and the extreme inner end of which is identi?ed be completely satisfactory for the accomplishment of the by the numeral '7. The outer portion 3 comprises a above objects, and while we have shown a preferred em plurality of helical convolutions 8 in side by side engage ment which collectively de?ne a coil spring means for 60 bodiment thereof, we wish it to be understood that same snugly receiving and retaining the inner end portion 9 of may be capable of modi?cation without departure from the scope and spirit of the appended claims. a, branch connector 10 which, as shown, is in the nature of a drop pipe which is concentric therewith and normal to the axis of the boom 1. The sprayer nozzle on the lower free end of the drop pipe 10 is identi?ed by the numeral 11. 65 What we claim is: 1. A sprayer boom and ?exible connection for an an gular rigid branch pipe associated therewith comprising a coil spring formed from a single length of wire and hav ing a reduced outer end in ?rm gripping engagement with The intermediate and inner portions 4 of our novel the inner end of said rigid branch pipe, the intermediate connector 2 de?ne an axially extended generally cylindri cal chamber 12 which is concentric with the reduced coil 70 and inner end portions of said coil spring de?ning an axially extended open ended chamber between the inner spring 3 but, as shown, is formed from a plurality of con end of said branch pipe and said boom. the wire com volutions 13 in side by side engagement, said convolu 3,031,211 3 4 prising the inner end of said coil spring being formed to provide a clamping yoke for the snug reception of said spaced relation to said source pipe to provide a passage boom, said clamping yoke including spaced legs which said passage and having one end thereof coupled to said branch pipe within said coil spring, the other end of said therebetween, and a ?exible pipe section extending through de?ne aligned loops at their outer ends for the reception of a clamping bolt extending generally tangentially of 5 ?exible pipe section communicating with the interior of said boom, and a ?exible pipe section having coupling said source pipe exteriorly of said spring and in spaced elements at its opposite ends, and being of a linear length relation thereto. substantially longer than the length of said coil spring in 4. The structure de?ned in claim 3 in which said last the unextended position thereof, one end of said ?exible mentioned means permits axial adjustments of said spring pipe section being connected to said boom and the op 10 with respect to said source pipe, and in which the other posite end thereof being connected to the inner end of end of said ?exible pipe section communicates with said said rigid branch connection within said chamber. source pipe remote from said spring axially of said source 2. The structure de?ned in claim 1 in which the inner end of said coil spring is spaced from said boom to de ?ne a laterally opening passage, said flexible pipe section 15 extending through said passage and being connected to said boom in longitudinally spaced relationship to said clamping yoke, said ?exible pipe section being of linear pipe. References Cited in the ?le of this patent UNITED STATES PATENTS 493,719 927,635 1,095,641 Henderson ___________ __ Mar. 21, 1893 Calvert ______________ __ July 13, 1909 Johnson ______________ __ May 5, 1914 dimensions to permit unrestricted swinging movements of said coil spring and rigid pipe section carried thereby. 20 3. Means for ?exibly connecting ‘a rigid branch pipe 2,013,595 Barnard _____________ __ Sept. 3, 1935 to a rigid source pipe, said means comprising a coil tension 2,705,158 Risley _______________ __ Mar. 29, 1955 1,054,686 France _______________ __ Oct. 7, 1953 spring having a reduced outer end in ?rm gripping en gagement with the inner end of said branch pipe, means adjacent the inner end of said spring ‘for securing same 25 to said source pipe with the axis thereof substantially normal to the axis of said source pipe, said last-mentioned means supporting the inner end of said coil spring in FOREIGN PATENTS OTHER REFERENCES Scienti?c American Publication, Aug. 7, 1909.