Y10T403/32861—T-pivot, e.g., wrist pin, etc.
This invention relates to standards for supporting electric motor fans, and the purpose of the invention is to combine with the swivel joint between the motor housing part of the standard and its support, a ball joint which serves to conceal the pivot and limit the hinge motion between the motor carrying element and its support; and to provide a motor mounting of this character having a large surface engagement at the hinge and allowing for close -adjustment to regulate frictional resistance so that the angular setting of the motor with reference to the standard may be maintained with certainty while still permitting change in such adjustment merely by rocking the motor housing on the upright part of the standard.
Figure 1 shows in side elevation improved fan motor mounting, the motor and fan being indicated in this view by broken lines.
Fig. 2 shows in elevation an enlarged view of the mounting taken from the right of Fig. 1.
Fig. 3 is a fragmentary sectional View of the motor housing.
Fig. 4 is a fragment-ary sectional view of the supporting member to which the motor housing is pivoted.
Fig. 5 is a detail view partly in section of the bolt and nut for connecting the motor housing and support therefor.
It is desirable in motor supports of the class herein described to provide a swivel connection in the supporting means for the motor which limits the possible angular adjustment of the motor on the standard so as to prevent the fan guard or fan from coming into contact with the support and incidentally to conceal the swivel connection to improve the appearance of the article. In the present case this purpose is accomplished by combining with the swivel a covering therefor of semi-spherical bearing elements.
The construction consists of a ring-shaped casting for encircling the motor frame and having at its lower end a projecting perforated ear surrounded by a semi-spherical flange which is spaced from the ear and allows for the reception of pivoting elements on a support for the motor housing. This ring-shaped motor housing I as indicated in Fig. 2 carries set screws 2 for retaining a motor 3, Fig. 1, therein.
ear 4. The e-ars 5 of standard 6 are also perforated at I0. The ears 4 and 5 are pivoted to'- gether by a bolt II having an integral head I2 at one end and threaded at its opposite end I3 to receive nut I4.
When the parts I and 6 are connected together by the bolt passing through ears 4 and 5 the member I may be rocked angularly with reference to the standard 6 so far' as permitted by the semi-spherical flange I5 on standard 6. The edges of this flange limit the relative motion by engaging the flange 'I at the points I6 or Il, Fig. 1.
The open lower end I8 of the circular flange 'I is at all times covered by iiange I5. The normal surface contact between ears 4 and 5 is supplemented by the surface contact between the flanges 'I and I5, adding to the frictional resistance afforded by the ears. The precise desired resistance to angular adjustment at the swivel connection is attained by tightening nut I4 on bolt I I. The head of the bolt and the nut engage opposite surfaces of the perforated ears 5, clamping them more or less against the ear 4. The perforations 8 in flange 'I allows for access to the bolt and nut at all times and for insertion of the bolt when the parts of the standard are assembled together.
The standard 6 as indicated in Figs. 1 and 2 may carry the motor speed regulating switch I9.
In the use of the construction the angular relationship between the members I and 6 is normally rarely changed but may be simply by rocking member I and the motor carried thereby with reference to standard 6, the friction between these two elements serving to retain them in their set position.
It is desirable to have such a swivel connection in a fan mounting but also desirable to conceal the joint for the sake of appearance.
1. A joint of the class described comprising a support and a supported element, said support and said element having intertting ears and intertting semi-spherical flanges for encircling and concealing said ears, said ears having coaxial perforations, and a bolt passing through said ears.
2. A joint of the class described comprising a support and a supported element, said support and said element having interfitting ears and interi'ltting semi-spherical flanges for encircling and concealing said ears, said ears having coaxial perforations, a bolt passing through said ears, and one of said flanges having a perforation in line with the perforations in said ears and for receiving the bolt.