US2645511A

US2645511A - Pole hinge

Info

Publication number: US2645511A
Application number: US182215A
Authority: US
Inventors: Harry E Rutledge
Original assignee: Individual
Current assignee: Individual
Priority date: 1950-08-30
Filing date: 1950-08-30
Publication date: 1953-07-14
Anticipated expiration: 1970-07-14

Description

July 14, 1953 H. E. RUTLEDGE POLE HINGE Filed Aug. 30, 1950 K/MJ X Patented July 14, 1953 OFFICE,

POLE HINGE Harry E. Rutledge, Pittsburgh, Pa.

Application August 30, 1950, Serial No. 182,215

1 Claim. 1 a This invention relates generally to pole hinges and more particularly to counterweighted pole hinges for tubular poles used for supporting lights, such as used to illuminate gasoline filling stations.

This application is an improvement on my application Serial No. 104,635, filed July 14, 1949, now Patent No. 2,577,811, dated December 11, 1951, and is distinguished therefrom by the use of a counterweight, for the pole and light, to aid one in lowering and raising the same. The counterweight in the pole hinge comprising this invention is obtained by a helical spring which is secured at one end to the base of the pole and extends upwardly and is connected to a chain which has its other end secured to the pole hinge member that is on the opposite side of the fulcrum to that of the light. By using a, stout spring with the very short leverage between the attachment of the counterweight device to the pole hinge one is enabled to properly counterbalance the light so one individual can lower and raise the same. Without the use of the counterweighting spring it is necessary to have at least two people to hold some of the light fixtures as they become very heavy at the end of the pole.

Another object of this invention is the manner in which the pole hinge members are secured to each other when in their upright position for the purpose of locking the pole when in use. The structure of this invention employs the two bolts, both of which threadably engage the poles in the pole hinge structure for the purpose of maintaining the pole erect and locked and for the purpose of attaching the guard and closure plate which aids in looking the pole hinge in place.

Other objects and advantages appear in the following description and claim.

The accompanying drawings show, for the purpose of exemplification without limiting the invention and claim thereto, certain practical embodiments of the invention, wherein:

Fig. 1 is a view in side elevation of a floodlight and pole, the latter being with the hinge comprising this invention;

Fig. 2 is an enlarged sectional view of the pole hinge when broken with the pole extending downwardly;

Fig. 3 is an enlarged sectional view of the pole hinge locked in its upright position.

Referring to Fig. 1- of the drawing the floodlight pole l is mounted on the foundation 2 which consists of a base casting member 3 and is bolted or otherwise cemented or secured to the foundation 2 and has the lower pole section 4 extending 2 upwardly therefrom. The lower pole section 4 may extend into the ground or into a concrete sub-base if the pole is to be of considerable height. The lower pole section 4 is relatively low from the ground, being preferably approximately from two and a half to three feet in length. The pole hinge 5 is made up of three parts, the lower hinge member 6 and upper hinge member I and the guard plate 8, as shown in Figs. 2 and 3. The lower hinge member 6 is provided with a threaded bore II] arranged to receive the upper threaded end of the lower pipe section 4. Above the threaded socket of the lower section 6 the lower hinge member is reduced in diameter as indicated at II and is provided with oppositely disposed threaded holes I2 and I3. Above the reduced cap section of the lower hinge member 6 projecting upwardly therefrom are a pair of ears I4 having aligned openings l5 for receiving the hinge pin I6- The ears M are spaced apart to provide adequate space for the wiring that comes from the light fixture I! at the top of the pole. The wiring passes downwardly through the upper pipe section l8 and between the ears l4 and through the opening as indicated. at I9 downwardly through the lower pipe section 4 on the inside of the counterbalancing spring.

The upper hinge member 1 is provided with an upwardly open socket 20 and a tail member 2I. The tail member 2| fits around half of the reduced section II of the lower hinge member and is provided with an opening 22 to receive the bolt 23 for the purpose of locking the pole hinge member in its upright position when the bolt passes through the opening 22 and into the threaded opening I3 of the lower hinge section.

The other half of the reduced section I l of the lower hinge member is covered by the locking shield member 8 which is held in place by the bolt 24 passing through the opening 25 in the shield and into the threaded opening [2 in the lower hinge section 6. Thus the cap or closure member 8 not only functions to close the gap but also prevents the hinge from breaking and also stifily supports and locks the pole in its upward position when in place as illustrated in Fig. 3.

The counterweight device is obtained by the use of the helical spring 26 which has one end secured to the bolt 21' passing through the lower pipe section 4 and the upper end of the spring is attached to the bicycle type chain 28, the upper end of which is secured by the bracket 29 to the lug 30 by means of the bolt 3|, as shown in Fig. 2. The lower section 6 is provided with a window 33 through which the chain 28 is permitted to pass and ride'on the rounded bearing section 34.

This structure is very readily assembled and easily put together and the short length of the spring, from the lug 39 to the hinge I6, provides all the counterweight necessary.

I claim: V

A hinged and counterbalanced pole consisting of upper and lower pole sections, hinged members secured to said pole sections, aligned bearings in both hinged members,"a pivot pin in said bearings to pivot said hinged members together,

an enlarged portion on said lower hinged mem- I ber below said bearings, an arcuate skirt on the upper hinged member fitting over the lower hinged member to form a smooth coupling with said enlarged portion on one side when the pole sections are in alignment, co-operating openings in said skirt and lower hinged member, a bolt in said cooperating openings to secure theskirt' largedportion, a window in the lower hinged member adjacent to and covered by said skirt, a lug on said skirt projecting into said window and covered by said skirt, a chain attached to said lug and passing through said window when uncovered by said skirt, a spring secured to the end of said chain and suspended in the lower pole section, and means in the lower pole section to which said spring is attached to provide a counterbalancing force for the upper pole section.

HARRY E. RUTLEDGE.

References Cited in the file of this patent UNITED STATES PATENTS Date Number Name 490,093 Albach Jan. 17, 1893 1,564,886 ONeill Dec. 8, 1925 1,742,481 Miller Jan. 7, 1930 1,993,183 v Shane Mar. 5, 1935 2,286,655 Supnick June 16, 1942 2,458,081 Jordan Jan. 4, 1949 2,577,811 Rutledge Dec. 11, 1951