US 2499446 A
Description (OCR text may contain errors)
B. F. ANTHONY DIRECTION FINDER March 7, 1950 Filed March 19, 1946 o g/away /mgw Patented Mar. 7, 1950 UNITED STATES PATENT OFFICE DIRECTION FINDER Benjamin F. Anthony, Kirkwood, M0.
1946, Serial No. 655,497 e claims. (c1. 23o-249.5) Y
Application March 19,
This invention relates to new and useful improvements and structural refinements in direction nnders, and the principal object of the invention is to provide a device of the character herein described, which is adapted for use with Ventilating fans and the like, for the purpose of determining the direction of air current produced by the same.
Generally speaking, the invention consistsk of a source of light positioned substantially at the center of the fan, the light rays emanating from said source and the air current produced by the fan being coordinated toward a common focus, whereby the direction of the air current may be readily and conveniently determined as aforesaid.
A further object of the invention is to provide a direction finder which does not, in any Way, interfere with the normal operation of such fan and in which the light source may be turned off if desired, as soon as the direction of the air current has been determined.
Another obi ect of the invention is to provide a direction finder whereby the fan may be adjusted before being set in motion, thus eliminating the conventionally experienced havard of sustaining iniury to ones fingers, while attempting to ad iust the fan in motion.
An additional obiect of the invention is to provide a direction finder which is applicable to v both. new fans and those already in use.
A still further ohiect of the invention is t provide a direction finder which is of simple construction and which. in addition to its use with Ventilating fans as above set forth. may be generallv employed in association with blowers of all descriptions. hair driers, and the like.
With the above more important obiects in View, and such other obiects as may become apparent as this specification proceeds, the invention consists essentially of the arrangement and construction of parts as illustrated in the accompanying drawings, in which:
Figure 1 is a side elevation of a Ventilating fan. showing the invention thereon.
Figure 2 is a front View of the same.
Figure 3 is a cross-sectional view, taken in the plane of the line 3-3 of Figure 2 and illustrating the invention per se.
Figure 4 is a side elevation showing the invention as used on a blower, and
Figure 5 is a front elevation of the subject illustrated in Figure 4.
Like characters of reference are used to designate like parts in the specication and throughout the several views.
Referring now to the accompanying drawings in detail, the invention consists of a light source designated generally by the reference character I0, the same comprising a lamp shell II, conligurated substantially as shown.
A socket I2 is mounted upon the back wall I3 of the shell II by suitable bolts I4 and an incandescent lamp I5 is replaceably positioned in the socket. A suitable reflector IS is mounted behind the lamp I5 and a lens Il is positioned in the remaining end of the shell II, as will be clearly apparent from the accompanying drawings.
The shell II is also provided with a suitable switch I8, the latter being in circuit with the lamp I5 by means of the conductor I9. A further conductor 20 connects the entire lamp assembly to a suitable source of current.
The shell II may bewelded or otherwise similarly secured to the radially extending bars 2l of the guard 22, such as is usually associated with the Ventilating fan 23. Alternatively, the shell may be provided with a suitable mounting flange (not shown), this in turn being adapted for connection to the fan guard.
It will be noted that the lamp assembly I0 is positioned substantially at the center of the fan and when the invention is placed in use, the light rays 24 emanating from the lamp are directed to coincide with the direction of air current 25 produced by the fan. In other words, the light rays and the air current are directed in a same general direction, whereby the direction of the air current may be readily and conveniently determined.
It is believed that the advantages resulting from the use of the invention will be readily understood from the foregoing disclosure, and further description thereof at this point is therefore considered unnecessary.
Referring now to the accompanying Figures 4 and 5, the same illustrate the invention as applied to a blower, designated generally by the reference character 26. Herein, the construction of the lamp assembly Ib is similar to that already described and it should be noted in this connection that the invention may be used with ventilating, airmblowing and similar other appliances in general, as well as in hair driers and other like machines, A wherever it is required to determine the direction of air current.
' While inthe foregoing there has been shown and described the preferred embodiment of Vthis invention it is to be understood that minor changes in the details of construction, combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as claimed.
What I claim as my invention is:
1. In association with a fan having a guard attached thereto, a source of light comprising an elongated lamp shell having a, forward and rear end and a. socket therein, for supporting an incandescent lamp, a reector behind said lamp, a
lens in front of said lamp attached to said Shelly a switch in said shell and in circuit with said lamp, means associated with said shell and; posi.-1 tioned between said switch and the rear end of said shell for attaching said shellto the fan guard.
2. An air now direction nder compris-ing a fan having a guard associated therewith, a source of light comprising a lamp shell attached to the center of said guard andr extending partially` on each face of said guard, a socket in said shell, for supporting an incandescent lamp, a reiector be- 4 hind said lamp. a lens in front of said lamp, and a switch in said shell and in circuit with said lamp, the light rays emanating from said lamp and the air ow produced by said fan being c0- ordinated toward a common direction for the purpose of determining the direction of the 'low of air.
BENJAMIN F. ANTHONY.
REFERENCE S CITED' The following references are of record in the fille of this patent:
UNITED STATES PATENTS Number Name Dlate Re. 17,236 Martin Mar, 12, 1929 905,089 McBerty Nov. 24, 1908 1,185,267 Vuilleumier May 30, 1916 1,402,352 Hawthorne, Jan. 3, 1922 1,464,382 Eaton Aug. 7, 1923 1,504,003' Trumbull Aug. 5, 1924 1,722,825 Roethel July 36'-, 1929 2,245,015 Siloal June 1G,V 1941