US 1774869 A
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Description (OCR text may contain errors)
Sept; 2, 1930. Y J, w, BROWN I 1,774,869
RATCHET BAR ACTUATING MECHANISM Filed March 1, 1938 2 Sheets-Sheet 1 gwvemkoz 4 Sept. 2, 1930.
, J. w. BROWN 2 Sheets-Sheet 2 bracing, with the brace rod shown in position: .thereon, and improved means for actuating Patented p 2 1930 fumrrED-f STATES- VMENT OM A J 7 Z maecHEeBAR- cwmmq;neemmsm V f Application filed March 1';
, The invention relates to improvedmeans for actuating a ratchet bar and ha's'particular reference to means for tightening brace rods on oil derricks and other structures to the exclusion of turn buckles, racks and. pin-c ions, andsimilar means.
4 h The invention'has for its principal'object" the provision ofan improved means for ac tuating a ratchet bar employing; another bar. 10 arranged at an oblique angle to the ratchet bar and. having ratchet teeth thereon arranged to engage the ratchet teeth of the ratchet bar, so that by driving the bar in'on'e y direction, the ratchet bar will be actuated in the direction of the ratchet teeth.
1 f A further objectof the invention is the.
provision of a casing adapted to be secured v to the structure to be braced and forming a guide for a ratchet member engageable'on a brace rod, the teeth on said ratchet member 5 being arranged transversely thereof and providing also another guide inlthefcasing to receive an actuating device'c'omprising a straight bar arrangedtoi be moved at an a oblique angle to 'theratchet member and hav-'- ing ratchet teeth onsaid bar arranged at an o angle thereto, to engage the ratchet teeth on the ratchet member to move the-,ra-tchet mem ber relatively to the casing'when the bar is v v in said'guide opening'8 with a'bar 9'having 8 0 actuated I V V I V o The invention'will be described in detail hereinafter and will be found illustrated in the accompanyingv drawings in which L v Figure 1 is a segmental view showing two legsof an oil derrick or other structure for the ratchet member ,on the brace rod applied thereto, 'f Fi ure 2 is a sectional" viewof the ratchet 'mem er and the actuating'means on a plane indicatedby the line 2-2 of, Figure 1,
Figure 3 is a view of-the device taken from the attachable side'of the guide'casing,
Figure 4 is a longitudinalse'cti'ona'l view on a plane indicatedby theline 4-4 of Fig ure 1,
tially on a plane indicated by the line 5 5 of'F re 3, and
In the. drawingssimilar reference; .charac-' in thesubjoined claims.
Figure 5 is a sectional detailtaken substan- "tighten the brace rod; I v
2. In abracerod tightening device, a tight i fl" 1 s; serial No,- 258,273; j
Figure o isafview oflga" fragment of I the, ratchet member; actuating 7 bar,
ters a auseam designate corresponding parts in aill}of thelviews -g if, 7 I-"llheratchetgbar; actuating .mechanism ;--is shown the drawings asapplied to: a brace rod for: oil derr icks,-for the; purpose ofjillustration, but it will be; apparent that-thestructureimaly be'utilized forother purposes than thatshownand theinvention is therefore not limitedfto thespecificapplicationof the i-n vention except.*where specifically set forth The: legs ofantoil derrick aredesignated' A o andAin-F igureLand the leg A has a brace rod '1 engagedtherewith in anysuitableman; I 61; SHQh .11 instancega's' ,-.by: means; of a bolt or'jrrivet 2if, ,The jleg l'A i'iis provided with a transverse .slot '0 to receive an elongated- J --flanged button? on a-cas'ingl. The, casing l i is provided with'a'n elongated guide open-j "ing 5 to receive a ratchet'member'Gthatis mounted-on or formed as a part of the brace I rod '1,"an'dis provided with ratchetteethf'F. f
' Casing 4is1a1soprovided with aguide opening 8 that extends at an obtuse angle to i the guide openings 5 and. slidably mounted ratchet teeth 10. thereon-arranged at an angle to the bar so astoengage theratchetteeth 7 on theratchetv member 6 when the baris driven 1 in a direction to engage the shoul- 'ders of saidratchetteeth against one another fi ordownwardly as shown in Figure 1 ofthe drawings, and by such movementof the bar 9.1 it will be apparent that theratchet memberfi will be driven'inia directionto tighten the brace rodl, andlwill hold the-brace i in tightened position.
WhatisClaimed is g 1. Ina brace rod tightening device, a tight and means sli dably' mounted in said casing and engagmg said member toadpist 1t and to ening member adanted to be mounted on, a
brace rod, a casingslidablyrmounting said member, and means slidable. in said casing at an obllque angle to and engaglngv the member tomove the member in the direction totighten the rod. i i
3. In a brace rod tightening device, a tightening memberadapted to be mounted on a brace rod; a casing slidably mounting said member and adapted to be secured to astructure to be braced, ratchet teeth on said memher and arrangedtransverselythereof, a bar slidably mounted on said casing and arranged to move atan'oblique angle to the member,
and ratchet teeth on said bar arranged to engage the ratchet teeth onthe member. 4 In a brace rod tightening device; a brace rod, a ratchet member on said rod means 5. In a brace rodtightening device, abrace said ratchet member;
rod, a' ratchet member on said rod a casing slidably mounting said ratchet member and adapted to be securedto a structure to be braced, a bar'mcvably mounted at an oblique angle to 7 said ratchet member, v and ratchet teeth on said bar arranged at an oblique angle I thereto and engaging the teeth of said ratchet 'member to move said ratchetimember relativelyto the casing. i v g v V hereof I afii'x'my' signature.
- In testim'onyw