Патент USA US2409663код для вставки
Oct. 22, 1946. E. c. CHRISTENSEN ' 2,409,662 TOWING POLE . Filed Aug. 9, 1944 Edward ('arlC'krz'sénserz‘ jn/g?for - ' arnezr Patented Oct. 22, 1946 2,409,662 UNITED STATES PATENT OFFICE 2,409,662 TOWING POLE Edward Carl Christensen, Denmark, Wis. Application August 9,1944, Serial No. 548,739 1 Claim. (Cl. 280-3314) 1 2 ranged to engage over the lug 24, said latching The invention relates to improvements in tow plate being yieldingly held in latching position ing poles and has for its primary object the pro by means of a compression spring 21 on the bolt vision of an extensible towing pole which is of 2|] and whereby the tubes It, H and I2 will be simple construction and highly efficient in oper ation. Cl automatically locked in retracted positions, as will be readily understood. The supporting plate Another object of the invention is the provision of an extensible towing pole provided with im or bar 28 is secured, as shown, to the bolts 20, 2| and 22. A ?exible releasing element 30 in the proved means for latching the same in retracted. form of a strong cord or steel cable is attached, as condition and releasing the parts for extension. Other objects will appear hereinafter. 10 indicated, to the plate 25 and whereby said plate may be withdrawn from engagement with the lug The invention consists of the combinations and 24 from a distance, as and when desired. arrangements of parts hereinafter described and By this arrangement an extensible towing plate claimed. _ is provided which is of simple construction and The invention will be best understood‘ by refer ence to the accompanying drawing forming a 15 highly efficient in use. As will be readily under stood, when it is desired to release the sections part of the speci?cation and in which Fig. 1 is a partial longitudinal section'of an of the pole for extension, this may be done from extensible towing pole embodying the invention; a distance, as from the seat of the towing ve hicle, by drawing upon the cord 30, and the sec- . Fig. 2 a top plan view taken substantially on line 2—2 of Fig.‘ 1; and 20 tions may be forced into their retracted condition by backing the towing vehicle. The speci?c form Fig. 3 a section taken substantially on line 3--3 and arrangement of parts disclosed is a simple of Fig. 1. v and effective one for the purpose. The embodiment of the invention illustrated in While I have illustrated and described the pre the drawing comprises three telescoping tubes H], H and [2. The inner tubes [0 and II are pro 25 ferred form of construction for carrying my in vention into effect, this is capable of variation and vided respectively with external stop shoulders modi?cation without departing from the spirit l3 and M at their inner or rearward ends, and of the invention. I therefore do not wish to be the two outer tubes II and I2 are provided re limited to the precise details disclosed, but de spectively with internal stop shoulders 15 and It sire to avail myself of such variations and modi at their outer or forward ends and whereby the ?cations as fall within the scope of the appended outward sliding of the inner tubes will be stopped claim. or limited before said tubes become completely A towing pole comprising three telescoping disengaged, as will be readily understood. tubes, the inner tubes having external stop shoul The outer tube I2 is provided at its rear end ders at their inner ends and the outer tubes hav with a bolt I‘! by means of which it may be con ing internal stop shoulders at their outer ends; nected, as indicated, with a member I8 on the ve extension plates secured to the outer end of the hicle to be towed. At its outer or forward end, the inner tube It is provided with extension inner tube; a traction bolt secured to said ex plates l9 secured thereto by means of bolts 20 and tension plates; a latching lug at the outer end of 2| and carrying a draft bolt 22 by means of which said outer tube; a spring actuated latching plate the same may be secured to the member 23 on the carried by the outer end of the inner tube and. rear end of the towing vehicle, as will be readily having an opening arranged to engage said lug understood. A latch lug 24 is secured, as in automatically upon retraction of said tubes; and. dicated, to the forward end of the outer tubel2‘ a ?exible releasing element secured to said latch and cooperates with a spring actuated latching 45 ing plate. plate 25 having an opening 26 adapted and ar EDWARD CARL CHRISTENSEN.