US2569528A

US2569528A - Screw anchor adapter

Info

Publication number: US2569528A
Application number: US557180A
Authority: US
Inventors: Charles W Kandle
Original assignee: Individual
Current assignee: Individual
Priority date: 1944-10-04
Filing date: 1944-10-04
Publication date: 1951-10-02
Anticipated expiration: 1968-10-02

Description

Oct. 2, 1951 c. w. KANDLE SCREW ANCHOR ADAPTER Filed OCU 4, 1944 A w 4 K m 4 2 W W A. A 5 v a h V. B A J A 9 AT TORNEY.

Patented Oct. 2, 1951 UNITED STATES {PATENT iO'FiFIflE' 2,569,528 scREw ANCHOR ADAPTER Charles Kandlefdhicagmili. Application October 4, 1944, Serial No. 55,7;1'80

telephone poles and the like. Such anchors have had various shapes, but all have a rigid eyelet at the upper end through which the cable or end of the stay rod is threaded. The lower end generally comprises a screw flight of one or two turns secured near the end of the central rod of the anchor. Such anchors are screwed into the earth on a slant directed toward the pole or object to be braced. V

Heretofore it has been the practice to place such anchors manually although there has been available various power units that could be employed for this purpose both of the air motor and electric motor type.

The present invention is based upon the principle of utilizing a power drive for screwing anchors in place and for unscrewing the same when desired, and the invention has as its prin cipal object the providing of an adapter for securing the end of the power shaft to the eyelet of the anchor and keeping the same in axial alignment at all times.

The invention is illustrated in the accompanying drawing in which:

Figure l is a perspective view illustrating the operation of placing a screw anchor in accordance with the present invention;

Fig. 2 is a front elevation of the adapter;

Fig. 3 is a side elevation of the adapter; and

Fig. 4 is a top plan view of the adapter.

In placing anchors according to the invention, the sod is first removed by manual shoveling and then the anchor I is positioned at the desired angle and a power unit 2 applied to screw the anchor into the ground.

The anchor I comprises a straight rod, usually of about three quarters of an inch in diameter, with its upper end bent to form a large eyelet 3, and having a short spiral screw flight 4 welded thereto near its lower end. The anchors are usually about five or six feet in length and are adapted to securely anchor guy wires and the like.

The power unit 2 comprises an electric motor having suitable reduction gearing for driving a power shaft 5. The casing for the unit has a pair of laterally extending handles 6 for manually holding the same during operation.

The power shaft has an end female coupling member! with a square recess thereinfor receiving the square shank 8 of the adapter 9.

turning relative to the adapter.

The adapter 9 comprises a casting having a clevis-shaped body I0 of substantial width and with aligned openings II and I2 through its opposite arms I3 and I 4 for receiving a pin I5. The body I0 has the square shank 8 mounted centrally thereon and the lateral hole It extends through the shank for receiving a coupling pin I! for securing the same to the coupling I of the power unit.

The body II) of the adapter is adapted to receive the eyelet 3 of the anchor and prevent the same from turning relative to the adapter, and the pin I5 is adapted to pass through the eyelet and secure the same in place.

The arm I I of the adapter extends downwardly a substantial distance beyond arm I3 and is provided with two spaced posts I8 between which the central rod of anchor I extends downwardly from eyelet 3 to hold the adapter in alignment with the rod of the anchor.

In applying the adapter the eyelet 3 of the anchor is laid flatly against body ID in the space between posts I8 and the end of arm I3 and this locates the rod of the anchor between posts I8. Thereafter the eyelet 3 is moved upwardly between arms I3 and I4 until it registers with the aligned holes II and I2. The pin I5 is then inserted through the holes II and I2 and eyelet 3 to retain the latter in place. The pin I5 has a head I9, and a cotter pin 20 is secured in the opposite end to hold the pin in place.

The space between the arms I3 and I4 is only slightly larger than the eyelet 3 so that the arms I3 and I4 overlap and confine the eyelet against The space between posts I8 and the end of arm I3 should be sufficient to substantially receive the eyelet 3 during insertion and removal.

The adapter has few parts and it rigidly secures the upper end of the anchor and turns the same with the motor shaft in either direction.

It can be applied quickly and easily.

Various embodiment of the invention may be employed within the scope of the accompanying claims.

I claim:

1. An adapter for securing a screw anchor or the like formed of a substantially straight rod provided with an eyelet at the upper end theremember of substantial width adapted to closely receive an eyelet having a projecting shank'in the plane of the eyelet, said adapter having one arm extending downwardly beyond the other, posts on the lower end of said extended arm spaced apart to receive the shank of the eyelet and hold the same in axial alignment with the adapter for turning, said posts being spaced from the end of said shorter arm to provide for insertion of the eyelet, and a pin removably passing through the arms and adapted to pass through the eyelet when the latter is positioned between the arms.

CHARLES W. KANDLE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 834,836 Miller Oct. 30, 1906 1,835,135 Bertrand Dec. 8, 1931 2,152,298 Wininger Mar. 28, 1939 FOREIGN PATENTS Number Country Date 206,759 Germany 1909