US2420979A - Operating knob and escutcheon plate assembly - Google Patents

Operating knob and escutcheon plate assembly Download PDF

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Publication number
US2420979A
US2420979A US49463243A US2420979A US 2420979 A US2420979 A US 2420979A US 49463243 A US49463243 A US 49463243A US 2420979 A US2420979 A US 2420979A
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United States
Prior art keywords
stem
knob
escutcheon plate
panel
operating
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Expired - Lifetime
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Herbert M Reeves
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FLORENCE STOVE Co
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FLORENCE STOVE CO
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Priority to US49463243 priority Critical patent/US2420979A/en
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/08—Controlling members for hand actuation by rotary movement, e.g. hand wheels
    • G05G1/10—Details, e.g. of discs, knobs, wheels or handles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/12—Arrangement or mounting of control or safety devices
    • F24C3/124—Control panels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/91—Knob rose plates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20396—Hand operated
    • Y10T74/20474—Rotatable rod, shaft, or post

Definitions

  • the present invention pertains to a novel construction of knob and escutcheon plate or bezel for an operating stem projecting through a hole in a panel.
  • the general object of the invention is to reduce the cost of manufacture of constructions in which a knob, backed by an escutcheon plate, is mounted on an operating stem protruding through a fairly large hole in a panel filled by the escutcheon plate, and particularly by obviating the necessity of accurately aligning the stem in the center of the panel hole.
  • escutcheon plate or bezel and the knob are constituted as structurally separate parts fixed together by a connection affording a relative lateral floating motion between the two.
  • Figure 1 is a fragmentary front view of a portion of a burner box panel of a stove through which operating stems for gas cocks project that are equipped with knob and escutcheon plate assemblies embodying the present invention.
  • Fig. 2 is a transverse sectional view taken substantially along the line 2-2 in Fig. l.
  • 2 ed plastic material or smthetic resin may be made of the same shade of material so that they have the appearance, when assembled, of being but one piece.
  • the knob or finger piece I l removably on the end of the operating stem I2
  • the latter is provided with a flattened side at I2a to present what is known as a D-end, and a complementally shaped recess Ma is formed in the rear face of the knob M.
  • This recess is dimensioned so that the end of the stem telescopes within it with a snug friction fit, retaining the knob against inadvertent removal from the end of the stem.
  • the washer I 5 also has a D-shaped opening Ilia therein, complemental to the D-end on the operating stem i2, so that it can be slid onto the same and, when in place, will be fixed against rotation.
  • the washer bears against a shoulder
  • Fig. 3 is an exploded perspective view showing the end of one of the operating stems and the parts of the knob and escutcheon plate assembly associated therewith.
  • the invention is especially applicable to the front panel and associated operating stems of the gas cocks in a gaseous fuel cooking stove.
  • Ill designates a portion of the front panel of a burner box for such a stove.
  • the panels are usually made of sheet steel covered by porcelain enamel. Projecting through large round holes I I in the panel, in the usual manner for such burner boxes, are operating stems I2 for gas cocks (not shown) located behind the panel.
  • the holes II are bordered by inturned flanges I3.
  • each of the stems I2 is equipped with a novel knob and escutcheon plate assembly, and since those for the two stems shown are identical, a description of one will sumce for both. But three parts are required in the exemplary construction shown, these being a knob I4, an escutcheon plate or bezel I5 and a washer I6. Both the knob and escutcheon plate may be made of mold- I 2b at the inner end of the flattened slide I20. of the operating stem I2.
  • the escutcheon plate I5 is sandwiched between the washer I6 and a rearwardly facing shoulder on the knob herein formed by a laterally projecting flange portion Mb.
  • the plate has a sufficiently large opening H54: in its center that a wide clearance is left between the edges of this opening and the telescoped portions of the knob and stem which are within it, thereby permitting a relative transaxial or floating movement of the knob and escutcheon plate.
  • the opening I5a is, however, completely hidden from view from the front of the assembly by the knob flanges Mb.
  • the peripheral portion of the escutcheon plate I5 is round and is dimensioned to fit fairly accurately within the opening I I in the panel I0 so as substantially to completely fill the same, the outer surface of the escutcheon plate being nearly flush with the panel.
  • Such outer surface of the escutcheon plate may be provided with suitable indicia (not shown) for indicating the direction of opening, etc., for the gas cock which is operated by the stem I2.
  • escutcheon plate shown is of shallow cup shape and its outer edge is rounded, as indicated at, I5b, to enhanc its appearance.
  • Strengthening ribs I5d join the rib I50 to the annular wall about the periphery of the plate.
  • the primary advantage is that the operating stem I2 need not be accurately located with reference to the center of the panel hole II. Elimination of the necessity for accuracy of alignment at this point greatly simplifies the mounting of the burners in the burner box.
  • the illustrated escutcheon plate and knob assembly can be operatively mounted on it. For the latter purpose it is merely necessary to slip the washer IS, the escutcheon plate I 5 and the knob l4 ove the end of the operating stem in the order named.
  • the escutcheon plate When the parts are assembled as described, the escutcheon plate fits within and is centered by the edges of the panel hole II, the plate being retained between the opposed surfaces of the knob I 4 and washer Hi. In the event that the stem I2 is not accurately centered with respect to the panel hole II, the clearance in thehole 15a in the escutcheon plate, as well as the fiat form of the opposed faces which hold the escutcheon plate, permits the escutcheon plate to shift transaxially of the knob.
  • an assembly is provided on the end of the operating stem which includes an escutcheon plate or bezel that is located bodily within the panel hole, and may even be flush with the face of the panel if desired, and yet substantial misalignment of the stem with respect to the center of the panel hole is permitted.
  • the escutcheon plate turn with the stem. In such event, the plate is ,free to shift transaxially so as to avoid any danger of sticking or jamming of the parts.
  • An operating knob and escutcheon plate assembly for use on an operating stem projecting generally centrally through a substantially larger hole in a fixed panel comprising, in combination, a knob adapted to be non-rotatably fixed to the projecting end of the stem, a washer on the stem, an abutment on the stem adapted to hold said washer in spaced relation to the projecting end thereof, and an escutcheon plate disposed between the knob and washer and having a central opening for passage of the stem through it with wide clearance about all portions of the projecting end of the stem and having a border portion peripherally dimensioned to fit accurately within the panel hole, said knob having a portion overlying and bearing against the front face of said escutcheon plate and completely covering the opening in the plate, said k'nob being removable from the stem to allow installation of the plate after assembly of the stem with the panel.
  • An operating knob and escutcheon plate assembly for use on an operating stem projecting through arelatively-large hole in a fixed-panel comprising, in combination, "a knob adapted to be frictionally secured to the projecting end of the stem in non-rotating relation, an escutcheon plate adapted to fit into the hole in the panel to close the same, said escutcheon plate having a central opening larger than any portion of the projecting end of the stem and adapted to receive the stem with a relatively loose fit whereby substantial misalignment of the stem within the panel hole is permitted, and a laterally projecting flange on said knob adapted to completely cover the opening in said escutcheon plate in any position of the stem within said opening, said knob being removable from said stem to permit installation of said escutcheon plate from the front of said panel.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Control Devices (AREA)

Description

May 20, 1947. H. M. REEVES OPERATING KNOB AND ESCUTCHEON PLATE ASSEMBLY Filed July 14, 1943 Patented ay 2Q, 1
OPERATING KNOB AND ESCUTCHEON PLATE ASSEMBLY Herbert M. Reeves, Kankakee, 111., assignor to Florence Stove Company, Gardner, Mass., a corporation of Massachusetts Application July 14, 1943, Serial No. 494,632
Claims. i
The present invention pertains to a novel construction of knob and escutcheon plate or bezel for an operating stem projecting through a hole in a panel.
The general object of the invention is to reduce the cost of manufacture of constructions in which a knob, backed by an escutcheon plate, is mounted on an operating stem protruding through a fairly large hole in a panel filled by the escutcheon plate, and particularly by obviating the necessity of accurately aligning the stem in the center of the panel hole.
More particularly, it is an object of the invention to provide an arrangement of the general class indicated in which the escutcheon plate or bezel and the knob are constituted as structurally separate parts fixed together by a connection affording a relative lateral floating motion between the two.
Further objects and advantages of the invention will become apparent as the following description proceeds, taken in connection with the accompanying drawing, in which:
Figure 1 is a fragmentary front view of a portion of a burner box panel of a stove through which operating stems for gas cocks project that are equipped with knob and escutcheon plate assemblies embodying the present invention.
Fig. 2 is a transverse sectional view taken substantially along the line 2-2 in Fig. l.
2 ed plastic material or smthetic resin and, if desired, may be made of the same shade of material so that they have the appearance, when assembled, of being but one piece.
To fix the knob or finger piece I l removably on the end of the operating stem I2, the latter is provided with a flattened side at I2a to present what is known as a D-end, and a complementally shaped recess Ma is formed in the rear face of the knob M. This recess is dimensioned so that the end of the stem telescopes within it with a snug friction fit, retaining the knob against inadvertent removal from the end of the stem.
The washer I 5 also has a D-shaped opening Ilia therein, complemental to the D-end on the operating stem i2, so that it can be slid onto the same and, when in place, will be fixed against rotation. The washer bears against a shoulder Fig. 3 is an exploded perspective view showing the end of one of the operating stems and the parts of the knob and escutcheon plate assembly associated therewith.
The invention is especially applicable to the front panel and associated operating stems of the gas cocks in a gaseous fuel cooking stove. As herein shown, Ill designates a portion of the front panel of a burner box for such a stove. The panels are usually made of sheet steel covered by porcelain enamel. Projecting through large round holes I I in the panel, in the usual manner for such burner boxes, are operating stems I2 for gas cocks (not shown) located behind the panel. The holes II are bordered by inturned flanges I3.
In accordance with the present invention, each of the stems I2 is equipped with a novel knob and escutcheon plate assembly, and since those for the two stems shown are identical, a description of one will sumce for both. But three parts are required in the exemplary construction shown, these being a knob I4, an escutcheon plate or bezel I5 and a washer I6. Both the knob and escutcheon plate may be made of mold- I 2b at the inner end of the flattened slide I20. of the operating stem I2.
The escutcheon plate I5 is sandwiched between the washer I6 and a rearwardly facing shoulder on the knob herein formed by a laterally projecting flange portion Mb. The plate has a sufficiently large opening H54: in its center that a wide clearance is left between the edges of this opening and the telescoped portions of the knob and stem which are within it, thereby permitting a relative transaxial or floating movement of the knob and escutcheon plate. The opening I5a is, however, completely hidden from view from the front of the assembly by the knob flanges Mb. The peripheral portion of the escutcheon plate I5 is round and is dimensioned to fit fairly accurately within the opening I I in the panel I0 so as substantially to completely fill the same, the outer surface of the escutcheon plate being nearly flush with the panel. Such outer surface of the escutcheon plate may be provided with suitable indicia (not shown) for indicating the direction of opening, etc., for the gas cock which is operated by the stem I2.
The particular form of escutcheon plate shown is of shallow cup shape and its outer edge is rounded, as indicated at, I5b, to enhanc its appearance. On its inner face and integral annular rib I50 borders the central opening I5a. and the edge of this rib is adapted to bear against the washer I6. Strengthening ribs I5d join the rib I50 to the annular wall about the periphery of the plate.
In assembling the construction shown, the primary advantage is that the operating stem I2 need not be accurately located with reference to the center of the panel hole II. Elimination of the necessity for accuracy of alignment at this point greatly simplifies the mounting of the burners in the burner box. With the operating stem I2 located only generally centrally of the panel hole II, the illustrated escutcheon plate and knob assembly can be operatively mounted on it. For the latter purpose it is merely necessary to slip the washer IS, the escutcheon plate I 5 and the knob l4 ove the end of the operating stem in the order named.
When the parts are assembled as described, the escutcheon plate fits within and is centered by the edges of the panel hole II, the plate being retained between the opposed surfaces of the knob I 4 and washer Hi. In the event that the stem I2 is not accurately centered with respect to the panel hole II, the clearance in thehole 15a in the escutcheon plate, as well as the fiat form of the opposed faces which hold the escutcheon plate, permits the escutcheon plate to shift transaxially of the knob.
The net result is that an assembly is provided on the end of the operating stem which includes an escutcheon plate or bezel that is located bodily within the panel hole, and may even be flush with the face of the panel if desired, and yet substantial misalignment of the stem with respect to the center of the panel hole is permitted. In some instances it may be necessary or desirable that the escutcheon plate turn with the stem. In such event, the plate is ,free to shift transaxially so as to avoid any danger of sticking or jamming of the parts.
I claim as my invention:
1. An operating knob and escutcheon plate assembly for use on an operating stem projecting generally centrally through a substantially larger hole in a fixed panel comprising, in combination, a knob adapted to be non-rotatably fixed to the projecting end of the stem, a washer on the stem, an abutment on the stem adapted to hold said washer in spaced relation to the projecting end thereof, and an escutcheon plate disposed between the knob and washer and having a central opening for passage of the stem through it with wide clearance about all portions of the projecting end of the stem and having a border portion peripherally dimensioned to fit accurately within the panel hole, said knob having a portion overlying and bearing against the front face of said escutcheon plate and completely covering the opening in the plate, said k'nob being removable from the stem to allow installation of the plate after assembly of the stem with the panel.
2. The combination with a fixed panel having a. hole therein and an operating stem projecting generally centrally through said hole, of a knob removably held in non-rotatable relation with the projecting portion of said stem, an abutment on said stem in spaced relation to the rear face of said knob, and an escutcheon plate having a central opening larger than any portion of the projecting end of the stem for loosely receiving the stem and covered by the outer portion of the knob, said escutcheon plate being interposed between the abutment and knob and being free for limited movement transaxially of the latter, said escutcheon plate being disposed within and 4 dimensioned to substantially close the hole in said pane 3. The combination with a fixed panel having a ole therein and an operating stem for a valve or the like, projecting generally centrally through the hole; of an operating knob on the forward end of the stem, a washer on the stem forming an abutment rearwardly of the knob, an escutcheon plate bearing upon said washer and having a central opening larger than any portion of the projecting end of the stem and loosely receiving the rear portion of the knob, said escutcheon plate being disposed within and dimensioned to close the hole in said panel, and a circular flange on said knob forwardly of the plate of a diameter substantially larger than the opening in the plate, said knob being removably secured to said stem to facilitate the assembly of said escutcheon plate with the stem and the panel.
4. The combination with a panel having a hole therein and an operating stem projecting generally centrally through said hole, of an operating knob on the forward end of the stem, said stem having a D-shaped forward end portion and said knob having a complemental recess to receive said D-shaped portion of the stem, a washer having a D-shaped hole therein to receive said projecting end of the stem, and an escutcheon plate having a central opening loosely receiving the rear portion of the operating knob and a rearwardly projecting peripheral flange bearing on said washer, said knob having a rearwardly facing shoulder disposed forwardly of the escutcheon plate and of a radial width such as to cove the opening in the plate.
5. An operating knob and escutcheon plate assembly for use on an operating stem projecting through arelatively-large hole in a fixed-panel comprising, in combination, "a knob adapted to be frictionally secured to the projecting end of the stem in non-rotating relation, an escutcheon plate adapted to fit into the hole in the panel to close the same, said escutcheon plate having a central opening larger than any portion of the projecting end of the stem and adapted to receive the stem with a relatively loose fit whereby substantial misalignment of the stem within the panel hole is permitted, and a laterally projecting flange on said knob adapted to completely cover the opening in said escutcheon plate in any position of the stem within said opening, said knob being removable from said stem to permit installation of said escutcheon plate from the front of said panel.
HERBERT M. REEVES.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS R. a A
US49463243 1943-07-14 1943-07-14 Operating knob and escutcheon plate assembly Expired - Lifetime US2420979A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160265786A1 (en) * 2015-03-11 2016-09-15 Lg Electronics Inc. Cooking appliance
US20170191671A1 (en) * 2016-01-04 2017-07-06 General Electric Company Cooktop Appliance

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1616106A (en) * 1924-06-07 1927-02-01 Studebaker Corp Latch
AT110598B (en) * 1926-02-04 1928-09-10 Karl Ing Saur Door handle including the corresponding rosette for automobile and other doors.
US2244161A (en) * 1938-06-23 1941-06-03 Roy W Johnson Interchangeable metering valve control

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1616106A (en) * 1924-06-07 1927-02-01 Studebaker Corp Latch
AT110598B (en) * 1926-02-04 1928-09-10 Karl Ing Saur Door handle including the corresponding rosette for automobile and other doors.
US2244161A (en) * 1938-06-23 1941-06-03 Roy W Johnson Interchangeable metering valve control

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160265786A1 (en) * 2015-03-11 2016-09-15 Lg Electronics Inc. Cooking appliance
US10174951B2 (en) * 2015-03-11 2019-01-08 Lg Electronics Inc. Cooking appliance
US20170191671A1 (en) * 2016-01-04 2017-07-06 General Electric Company Cooktop Appliance

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