Title:
Combined knob, scale, and pointer structure
United States Patent 2427050


Abstract:
3 OatlA s. \^. 1 My present invention, in its broad .aspect, has reference to fiprdverienits *inkinobs- for manipulating the control shafts -of radios, as for 'instance, volume control shafts and the like. More particularly, it is my purpose to-provide a knob, which is simple in'dobstiUtidn,...



Inventors:
Olaf, Gorden
Application Number:
US58148745A
Publication Date:
09/09/1947
Filing Date:
03/07/1945
Assignee:
Olaf, Gorden
Primary Class:
International Classes:
G05G1/10
View Patent Images:
US Patent References:
1599034Radiodial1926-09-07
1566069Illuminated dial1925-12-15
1513925Combined knob and dial1924-11-04



Description:

3 OatlA s. \^. 1 My present invention, in its broad .aspect, has reference to fiprdverienits *inkinobs- for manipulating the control shafts -of radios, as for 'instance, volume control shafts and the like. More particularly, it is my purpose to-provide a knob, which is simple in'dobstiUtidn, 'carries a pointer and a protecting glass, canrber:ised with a fight, aiia has a-unique and improved sctale which isay be readily fitted in -place 'arid ,Wich fndtfbris with the p6inter to indicate iposition. ~i'uther- ii more, my invention is characterized by simplicity and elimination of fragile parts which are likely to become broken or deranged. It can also be applied to any conventional radio control shaft, and may be manufactured and sold at relatively 1 small cost.

Other and equally important objects and advantages will be apparent as the description proceeds, but changes in size, arrangement, form, proportion, and construction of parts may be 2 made to meet varying conditions of use, provided such changes are within my broad inventive concept as defined by the claims appended hereto.

In the drawings wherein I have illustrated a preferred form of my invention: Figure 1 is a front elevation of my invention; Figure 2 is a longitudinal section on the line 2-2 of Figure 1; Figure 3 is a transverse section taken on the line 3-3 of Figure 2; Figure 4 is a transverse section taken on the line 4-4 of Figure 2; Figure 5 is a rear view of the body of the knob per se; Figure 6 is a perspective view of the dial and dial support; Figure 7 is a front view of my device partly broken away and illustrating the use of a hand; and Figure 8 is a side view of a dial and dial support with a light arrangement and cooperating parts shown in dotted lines.

In the drawings wherein like characters of reference are used to designate like or similar parts throughout the several views: The numeral I designates a part of a front wall of a radio cabinet through which protrudes in the usual manner a volume control shaft 2.

Mounted above the shaft 2 and extending through the cabinet wall I is a screwthreaded pin 3 which protrudes from the front of the wall as shown in Figure 2 to engage in an oblong opening 4 in the supporting base 5 of a dial device having a dial 6 connected with the supporti ~gqbgge byjbnabi,ý 'Thebase .5, diai6 aildirm 7 :are ;pteferably :f6f ifed arid i Beiit from 'a *single pice ^df shet 'metal, 'and -th :dial ifay 'bfe'suitabl Edb6iratied trfdaWs ýsradua ionBh -On the friit fate ithreof. The baske i's h an bpeninig -9 which goes jthb ifthe vbliime confrol shaft 2, iand *the SA Whfi6h: 'is !at Tight angis to the base ifi dial is 6f W fffi&ient lengt h t'o ranri0 ftil dial 4in froiit f the'e nVa 'f 'the sh1at. 0 A cylindrical 'b-ollow klibb 'IO, 4is -f6rmdihh 0 .-radially 6i:tid fd finti al 'finldrgeinrit or web 11 formed with a transverse screwthreaded opening 12, and a longitudinal opening or bore 13 at the axis of the cylinder and in line with the volume control shaft 2. Opening 13 receives shaft 2 and the opening 12 communicates with bore or opening 13 and receives a set screw 14 with a pointed end to attach the knob on the shaft 2. The inner end of the web II contacts 0 the base 5 of the arm I of the dial to hold the dial on the shaft with the pin 3 holding the dial stationary, and a suitable washer 15 may be placed between the base and te enlargement if desired. The front edge of the rot ge knob is enlarged 25 and formed with a bezel 16 and a knurled edge 17; the bezel receives the protecting glass 18 after the manner of assembling a watch crystal and rim. The dial is given a fixed "zero" reading and a pointer 19 attached to the inner periph30 ery of the knob 10 to extend radially inward from the knob adjacent the dial, or a hand 2U fixed on a portion 23 of the enlargement 11 that is aligned with the axis of the shaft 2 and extends through a central opening 24 in the dial 35 6 as shown in Figures 7 and 8, to travel over the face of the dial as the knob is turned to indicate to the operator stages in volume and the like. An electric light 21 may be mounted on the base 5 to give an indirect lighting effect to 40 the dial, in which case the enlargement is cut away as at 22 to permit movement of the knob.

It will be noted that the enlargement is substantially triangular in cross-section with an enlarged base and a smaller end extending past 45 the shaft 2', and that it extends the full length of the knob and well past the end of the shaft 2.

While it is believed that the operation and advantages and details of construction will be ap50 parent from the foregoing, it is emphasized that the detailed description and drawings are for the purpose of imparting a clear understanding of my invention, whereas interpretation of its scope should only be made in the light of the 55 subjoined claims, I claim: 1. In a radio actuator knob, a substantially hollow cylindrical knob with the inner end open and having a transparent outer end with a pointer therein, said knob having a radially positioned web extending inward from a point in the periphery to the center thereof with a longitudinally extending centrally disposed bore, a radially positioned set screw in said knob, a stationary dial positioned in the knob on the inside of the said transparent end thereof, and an arm suspending said dial in aligned relation with the knob.

2. In an actuating knob for extending shafts of radios and the like, a substantially hollow knob with a knurled rim and a window at the outer end and with the inner end open, said knob having a radially positioned web extending inward from a point in the periphery to the center thereof with a longitudinally extending centrally disposed bore, a radially positioned set screw in said knob positioned to contact a shaft that may be placed in the bore of the web, a stationary dial positioned in the knob on the inside of the said window thereof, an arm suspending said dial with the center thereof aligned with the axis of the bore of the web, said arm having a base with an opening therein aligned with the axis of the bore of the web and dial, and means holding the arm and dial stationary. 3. In an actuating knob for extending shafts Number 1,599,034 1,566,069 1,513,925 Name Date Weston --__ __---- Sept. 7, 1926 Buchholz --------- Dec. 15, 1925 Murdock --____--- Nov. 4, 1924 of radios and the like, the combination, which comprises, a substantially hollow cylindrical knob with a window in the outer end, a knurled rim around the outer end, and with the inner end open, said knob having a radially positioned web extending inward from a point in the periphery to the center thereof with a longitudinally extending centrally disposed bore in the inner end of the web, a set screw in said knob extending Sinto the bore, a stationary dial positioned in the knob on the inside of the window in the outer end thereof, a base having an opening therein with an arm extending from the base suspending the said dial with the center of the dial aligned with the center of the opening in the base and axis of the knob, said base having an opening therein by which it may be held stationary, and a light mounted on the base and positioned in the knob.

OLAF GORDEN.

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