US3011492A

US3011492A - Ventilators for cooking ranges

Info

Publication number: US3011492A
Application number: US741915A
Authority: US
Inventors: Reuben J Humbert
Original assignee: Individual
Current assignee: Individual
Priority date: 1958-06-13
Filing date: 1958-06-13
Publication date: 1961-12-05
Anticipated expiration: 1978-12-05

Description

Dec. 5, 1961 R. J. HUMBERT 3,011,492

VENTILATORS FOR cooxmc RANGES Filed June 15, 1958 2 Sheets-Sheet 1 IN V EN TOR.

QELJBEN I HUMBEET ATTORNEYS Dec. 5, 1961 R. J. HUMBERT VENTILATORS FOR cooxmc RANGES Filed June 13, 1958 2 Sheets-Sheet 2 INVENTOR. REUBEN 3'. ML) MBEQT ATTOZNEVS 3 3,011,492 VENTILATORS'FOR COOKING RANGES Reuben J. Humbert, Box 563, Coos Bay, Oreg.

Filed June 13, 1958, Ser. No. 741,915

6 Claims. (Cl. 126-299). 1 l I StatoiP twf Patented Dec. 5,1961

f ably secured by L-shapedbrackets 20 to the back wall 16 of the range 10. .1

The present invention'relates to improvements in ventilators for cooking ranges, and in particular to improved.

by the casings, when in retracted condition, and being arranged to be extended upwardly out of the casings and bent to extend forwardly over the'burner surfaces of ranges, at desired angles and elevations relative thereto.

An object of the present invention is to provide a ventilating hood assembly for. a stove which is extensile from and retractile into a casing secured to the back of a stove adjacent the burner surface so as to be readily available when needed and normally out of the way and out of sight when not needed.

Another objectof the present invention is to provide a ventilating hood assembly for -a stove which is neat and attractive in appearance .when' in the extended position, and one which effectively removes all of the smoke vapors and fumes from the burner surface of the stove when in operation.

Another object of the invention is to provide ventilators of the character indicated above, wherein rack and pinion means are provided for retracting and extending the suction conduits relative to the casings.

These and other objects and advantages of the present invention will be fully apparent from the following description when taken in conjunction with the annexed drawings, in which:

FIGURE 1 is a front perspective view of a cooking range having a ventilator of the present invention installed thereon, with the suction conduit in extended position and bent over the burner surface of the range;

FIGURE 2 is a fragmentary rear perspective view showing the ventilators, partly brokenway, and secured to the back of the range, the-conduit being in retracted condition;

FIGURE 3 is'a view similar to FIGURE 2, showing the conduit in the extended and bent condition;

FIGURE ,4 is a fragmentary vertical transverse section, on an enlarged scale, taken on: the line 4-4 of FIGURE 3;

FIGURE 5 is an enlarged and contracted horizontalv section, taken on the line 5--5 of FIGURE 1;

FIGURE 6 is an enlarged fragmentary vertical transverse section taken through the conduitand showing a stiffening chain in an erect condition of the conduit;

' Theventilator 18 comprises avertically elon'gated flat casing 22 having a closed bottom 24 and'a'n 'open top.

The casing 22 ispositioned in abutting relation withrespect to the back 16 of the stove 10 with the open upper end spaced above the burner surface 12 which projects horizontally from the back 16. An elbow fitting 26, constituting an outlet means,v projects from the bottom 24 of the casing 22 and is adapted for attachment to a source of suction, such as a suction fan located in the Wall or beneath the floor of the room in which the stove 10 is installed.

A flat rectangular and vertically elongated and bendable hollow suction conduit 28 comprises-a perforated front wall 30, an imperforate "back wall 32, and imperforate side walls, and is shorter, narrower and shallower than and is positioned spacedly within the casing 22, as shown in FIGURE 5, through the open upper end of the casing. The conduit 28 has an imperforate upper end wall 34 and an open lower end 36.- When the'conduit 28 is retracted within the casing 22, in an out-of-the-way, concealed, and stored position, its open lower end,36 is adjacent to the-bottom wall 24 of the casing 22, and its closed upper end wall 34 is above and contiguous to the open upper end of the-casing 22. 1

Formed on the front wall of the casing 22 at its upper end and extending forwardly therefrom and over the upper edge of the range shield 40, and extending hori zontally across the front wall of the casing 22, is a semicylindrical hollow housing 38 havingend walls. which 1 are extensions of the end Walls of the casing 22, as seen in FIGURE 5.

The portion 38 of the casing 22 contains a horizontally disposed shaft 42 carrying pinions 44 and 46 inwardly of its ends respectively. A portion of the shaft 42 adjacent one end projects exteriorly of thehousing 38 and carries a knob 48. The front wall 30 of the conduit 28 has a rack extending upwardly alongeach of its side edges meshingly engaged in the adjacentone of the pinions 44 and 46. r The knob 48 onthe shaft 42 constitutes actuating means for effecting the movement of the conduit 28 from the nested position of FIGURE 2 within the casing 22 to an upright direction position projected above the casing 22 with the open end 36 below and adjacent the open top of the casing 22 and the closed end 34 spaced above and remote from the open top ofthe casing 22.

' Means is provided for permitting limited bending movement of the conduit 28 from the dotted line upright position shown in FIGURE4 to the full line position. Specifically, this means includes on each side ofthe conduit between the legs of the main link 54. The ends of the I 52 are affixed, to the inner sides of the side wall of the the reference numeral 10 designates a range having a a burner surface 12, afront wall 14, and a back wall 16. A ventilator of thep-resent invention is designated generally by the reference numeral 18 and is shown detach- I the back wall 32 of the conduit. The'side walls, the, f

FIGURE 7 is a view similar to FIGURE 6, showing 6 main links 54 extend beyond the'point of pivotal connection to the auxiliary links 56, as shown in FIGURE 6, so that upon bending movementin the direction of the bights of the main. links 54, the ends of the main links 54 jam together and prevent further'bending movement of the conduit 28. i

In FIGURES 4 and 8 it willbe seen that the chains conduit 28 and are spaced from the front wall '30'and front wall 30, and the. back wall 32 of the conduit. 28 are fabricated of a flexible material such as plastic. or

The front wall 30 of the conduit is provided with spaced apertures 58 constituting ingress openings for air and fumes rising from the burner surface 12.

In FIGURE 9 the modified form of the/conduit is" shown and designated generally by the reference numeral 28 in which a rack 50' extends along the sides of the front wall 66 which is fabricated of horizontally disposed interlocking strips 62 pivotally connected together permitting bending of the same as a unit in the same manner as heretofore described with reference to the front wall 30.

In each of the embodiments shown,.a stiffening element assembly, constituting a bendable rod 64 encased in a housing 66 formed integrally with the back wall of the conduit 28, 28', is used to impart rigidity to the back wall of the

conduit

28, 23. The portion adjacent the upper end of the rod 64 is threaded and provided with a nut 68 by means of which the conduit closed end 34 is adjustably compressed toward the open end 36 if any slack is to be taken up due to wear or loosening of the chain structure 52.

In use, the casing 22 is detachably secured to the back 16 of the stove 10 with the upper end of the casing 22 above and contiguous with the upper end of the shield member 4i). A handle 68 is provided by means of which the conduit 28 may be bent to the curved position shown in FIGURES 2 and 3 after the knob 48 is manually rotated to effect the movement of the conduit 28 from the position wholly within the casing 22 to the dotted line position of FIGURE 3 exteriorly of and above the casing 22. The elbow fitting 26 is connected to a source of suction and fumes and vapors rising from the burner surface 12 will be drawn into the interior of the conduit 28 and exhausted through the casing bottom 24. Although there has been shown and described herein a g said casing and having pinions severally in mesh with said rack bars, and a rotating handle on an end of the shaft, and wherein said casing has afront wall, a horizontal housing on the casing front wall at the upper end of the casing, said housing having end walls and being positioned forwardly of the front wall of the suction conduit, said shaft being enclosed in said housing and journaled at its ends in the housing end wall.

4. In a cooking range having a vertical wall and a horizontal burner surface, a vertically elongated casing of flat rectangular cross-section, said casing having relatively wide front and rear walls and relatively narrow sidewalls, means mounting said casing on the range with its front wall confronting said range wall, said casing having a closed lower end spaced below the burner surface and an open upper end located in the region of said burner surface, suction means in communication with a lower part of the casing, and a fiat rectangular bendable hollow conduit having an open lower end slidably engaged in'the casing through the upper end of the casing, said conduit having relatively wide front and rear walls and relatively narrow sidewalls, the sidewalls and the rearwall of the conduit being imperforate, and suction opening means on the conduit facing the range burner preferred form of the invention, it is to be understood I that the invention is not necessarily confined thereto, and that any change or changes in the structure of and in the relative arrangements of components thereof are contemplated as being within the scope of the in\ ention as defined by the claims appended hereto.

What is claimed is:

1. A ventilator for a cooking range burner surface comprising a vertical casing adapted to be mounted on a range, said casing being of rectangular cross section and having an open upper end and a closed lower end, a fitting on the casing at the lower end thereof for connection to a source of suction, a bendable rectangular suction conduit having a closed upper end and an open lower end, said suction conduit being slidably engaged through the open upper end of the casing with its open lower end in communication with the interior of the casing, said suction conduit being vertically movable in the casing from a depressed retracted position within the casing to an elevated extended position above the casing, said conduit having side walls and a back wall which i are substantially imperforate and a front wall which has suction holes therein, said conduitbeing bendable in its extended position from an initially erect position to a curved position to reachover the burner surface of a ing the conduit, said operating means comprising bendable vertical rack bar means secured on the front wall of the suction conduit, and manually-rotatable pinion means journaled on the casing and meshed with said rack bar means. t

2. A ventilator according to claim 1, wherein said pinion means comprises a horizontal-shaft journaled on said casing and having pinions severally in mesh'with said rack bars and a rotating handle on an end of the shaft.-' 7 7 3; A ventilator according to claim 1, wherein said pinion means comprises a'horizontal shaft journaled on range, and operating means for retractingand extendsurface, said conduit being upwardly movable from a depressed storage position within the casing to an elevated position partly out of the casing and being bendable over the burner surface, a bendable rack bar fixed to and extending along the conduit and exposed at the front wall thereof, a pinion journaled on the casing and meshed with the rack bar, and means for rotating the pinion to extend and retract the conduit into the casing.

5. In a cooking range having a vertical wall and a horizontal burner surface, a vertically elongated casing of flat rectangular cross-section, said casing having relatively wide front and rear walls and relatively narrow sidewalls, means mounting said casing on the range with its front wall confronting said range wall, said casing having a closed lower end spaced below the burner surface and an open upper end located in the region of said burner surface, suction means in communication with a lower part of the casing, and a flat rectangular bendable hollow conduit having an open lower end slidably'engaged in the casing through the upper end of the casing, said conduit having relatively wide front and rear walls and relatively narrow sidewalls, the sidewalls and the rear wall of the conduit being imperforate, and suction opening means on the conduit facing the range burner surface, said conduit being upwardly movable from a depressed storage position within the casing to an elevated position partly out of the casing and being bendable over the burner surface, a bendable rack bar fixed to and extending along the conduit and exposed at the front wall thereof, a pinion journalled on the casing and meshed with the rack bar, and means for rotating the pinion to extend and retract the conduit into the casing, said rack bar being secured to the front wall of the conduit. p

6. In a cooking range having a verticalwall and a horizontal burner surface, a vertically elongated casing of flat rectangular cross-section, said casing having relatively wide front and rear walls and relatively narrow sidewalls, means mounting said casing on the range with its front wall confronting said range wall, said casing having a closed lower end spaced below the burner surface and an openupper end located in the region of said burner surface, suction means in communication with a lower part of the casing, and a flat rectangular bendable hollow conduit having an open lower end slidably engaged in the casing through the upper end of the casing, said conduit having relatively wide front and rear walls and relatively narrow sidewalls, the sidewalls and the rear wall of the conduit being imperforate, and suction opening means on the conduit facing the rangeburner surface, saidconduit being upwardly movable from a deposition partly out of the casing and being bendable over the burner surface, a bendable rack bar fixed to and extending along the conduit andexposed at the front wall thereof, a pinion journalled on the casing and meshed with the rack bar, and means for rotating the pinion to extend and retract the conduit into the casing, said pinion being located at the upper end of the casing.

References Cited in the tile of this patent Sperry May 31, 1927 6 Hentschel June 17, Nordan Aug. 14, Belt May 29, Egglcston Sept. 18, Gillette Feb. 19, Hamilton Apr. 20, Kenneday et a1. Oct. 22, Schaefer Dec. 3, Waninger Dec. 16,

FOREIGN PATENTS Great Britain Nov. 24, France Aug. 26,