US2836989A - Control device - Google Patents

Control device Download PDF

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US2836989A
US2836989A US426177A US42617754A US2836989A US 2836989 A US2836989 A US 2836989A US 426177 A US426177 A US 426177A US 42617754 A US42617754 A US 42617754A US 2836989 A US2836989 A US 2836989A
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Prior art keywords
shaft
knob
support
sleeve
knob portion
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Expired - Lifetime
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US426177A
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William J Schultz
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General Electric Co
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General Electric Co
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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
    • G05G1/12—Means for securing the members on rotatable spindles or the like
    • 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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
    • G05G5/06—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G2700/00—Control mechanisms or elements therefor applying a mechanical movement
    • G05G2700/04—Control mechanisms limiting amplitude or adjusting datum position
    • G05G2700/08—Control mechanisms for locking members in one or more positions
    • 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
    • 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
    • Y10T74/20576—Elements
    • Y10T74/20636—Detents
    • Y10T74/2066—Friction

Definitions

  • This invention relates to control knob devices and particularly to improved means for locking the manually positionable knob portions of such devices against motion once the device has been adjusted or set at a particular position.
  • a control shaft may be moved to derive a range of control settings for the device in question, and such shafts are often equipped with manually positionable knobs to facilitate setting and adjustment thereof. It is often desirable to provide means for locking the shaft in place once it has been set in a particular control position, so that the control device will function as desired, unaffected by any careless or accidental forces applied to the knob and tending to change the setting. Moreover, such locking means should be strong and effective if any reliance is to be had for its performance, it should be simple and easy to manipulate, and it should be inconspicuous and at the same time in harmony with the remainder of the control assembly to achieve the most pleasing effect on the eye.
  • Figure 1 is an exploded View, in perspective, of the improved control device, without the control shaft but showing part of a support panel;
  • Figure 2 is a front view of the device, as it looks when assembled together;
  • Figure 3 is a sectional view, in elevation, of the control knob assembly taken along the lines 3-3 in Figure 2, also showing a portion of the support panel as well as a part of the control shaft.
  • an apertured support in the form of a panel 4 having the aperture 5 through which extends the rotatable control shaft 6.
  • the control knob assembly is fastened to the shaft 6 and comprises the knob portion 7, the enlarged lock-nut 8, the protective washer 9, the pair of resilient friction washers 11, 12, and the slidably mounted externally threaded sleeve 13 having the enlarged annular inner portion 14 formed thereon or attached thereto.
  • this enlarged portion is formed by staking the sleeve to a washer, but other convenientmethods of fabrication could be used so long as the enlarged portion is integral with the sleeve and rotates therewith.
  • the shaft 6 has its outer end fitted into a suitably shaped recess provided within the knob portion 7 and the knob portion is fastened to the shaft by means of a pair of set screws 15.
  • the knob portion In fitting the knob portion on the shaft, it is slipped over the end of the shaft and pushed in until the proper clearance is obtained between it and the outer side of the panel, after which it may be fastened securely on the shaft.
  • the knob portion In assembly of the Patented June 3, 1958 parts together, the knob portion is the last part of the knob assembly to be fastened in place, the other parts preceding it on the shaft with the sleeve 13 and friction washer 12 being the first in place on the inner side of the panel.
  • the inner diameter of sleeve 13 is slightly larger than the diameter of the shaft so that the sleeve is slidably mounted on the shaft for a purpose to be described in greater detail below. Also, the outer diameter of sleeve 13 is slightly less than the diameter of aperture 5 to permit the sleeve to easily pass through the panel.
  • the friction washer 11, protective washer 9, and lock-nut 8 are slipped over the shaft and then comes the knob portion 7, and, as shown in Figure 3 only, a lockwasher 16 in the form of a C-washer is slipped on the sleeve to serve as a stop for the lock-nut 8.
  • the knob portion and sleeve are keyed together by means of the transverse slots 13a in the sleeve and the transverse key members 7 within the knob portion recess. This permits the sleeve and knob portion to be rotated together as a unit but does not prevent any motion of the sleeve along the shaft 6.
  • the enlarged inner annular portion 14 has the tab 14a which may cooperate with the punched-out section 4a of the panel to serve as a stop in either direction of rotation of the control knob assembly.
  • the lower part of Figure 1 illustrates the contiguous relationship of the inner parts, there being parts 4a, 14', and 14a, being identical with the corresponding upper members and forming part of a lower identical control knob assembly.
  • knob portion 7 Also turning with the knob portion 7 is the protective washer 9, as these parts are keyed together through the cooperation between bent washer tab 9a and knob portion recess extension 7a. Or conversely, when the knob portion is stationary, the washer 9 remains stationary also.
  • an elongated portion 7b forming a handle therefor.
  • the handle portion Opposite the handle portion is the elongated part 70 forming a pointer for cooperation with a suitable scale which may be provided with the control device.
  • These elongated portions are cut away, as at 7d, so that the knob portion fits over the lock-nut 8.
  • the central hub 7e of the knob portion has a diameter less than the outer diameter of the nut 8 to facilitate manipulation of the nut. It is noted that recess extension 7a is formed in the elongated handle portion 7b.
  • the knob assembly can be manually manipulated to move the control shaft 6 to any selected position.
  • the nut may be knurled to facilitate manipulation thereof, and if it is desired to lock the shaft in any position so selected, the lock-nut is rotated to clamp contiguous parts of the knob assembly to the support panel; that is, the panel is clamped between the nut and the inner sleeve portion 14.
  • the friction Washers 11, 12 add to the clamping action to give positive and effective locking of the control knob assembly.
  • the locking is quite simple to accomplish and it is most effective when completed. Moreover, a well arranged and compact assembly is provided, such that the locking means blends into the design of the knob portion, providing an overall effect that is pleasing to the eye, in addition to its being functional and utilitarian.
  • a control device comprising an apertured support, a rotatable shaft extending through said support, a knobassembly affixed to said shaft on one side of said support to facilitate manual positioning thereof, said knob assembly including a knob portion fastened to'said shaft and a' portionconnected to said knob portion, said portion surrounding said shaft and extending from said knob'portion through said support such that aflpart thereof is contiguous to the other side of said support, and means to clamp said part to said support to prevent movement of said knob portion in either direction of rotation of said shaft.
  • a control device comprising an apertured support, a rotatable shaft extending through said. support; a knob assembly aflixed to said shaft on one side of said support to facilitate manual positioning thereof, said knob assembly including a first part contiguous to said one side of said support and a knob portion fastened to said shaft, said knob portion having a portion connected-thereto which surrounds said shaft and extends from said knob portion through said support such that said portion has a second part which is contiguous to the other side of said support, and means to simultaneously clamp both parts to said support to prevent movement of said knob portion in either direction of rotation of said shaft.
  • a control device comprising an apertured support, a rotatable shaft extending through said support, a knob assembly affixed to said shaft on one side of said support to facilitate manual positioning thereof, said knob assembly including a knob portion fastened to said shaft and a threaded portion connected to said knob portion, said threaded portion surrounding said shaft and extending from said knob portion through said support such that a part thereof is contiguous to the other side of said support, and a nut cooperating with said threaded portion to clamp said contiguous part to said support to thereby prevent movement of said knob portion in either direction of rotation of said shaft.
  • a control device comprising an apertured support, a rotatable shaft extending through said support, a knob assembly affixed to said shaft on one side of said support to facilitate manual positioning thereof, said knob assembly including a knob portion fastened to said shaft and a threaded portion surrounding said shaft andextending from said knob portion through said support such that a part thereof is contiguous to the other side of said support, a nut cooperating with said threaded portion to clamp portions of said support between said nut and said part to prevent movement of said knob portion in either direction of rotation of said shaft, and friction means disposed between said support and said contiguous part and between said support and said nut.
  • a controldevice comprising an apertured support, a rotatable shaft extending through said support, a knob assembly afiixed to said shaft on one side of said support to facilitate manual positioning thereof and including a knob portion fastened to said shaft and an externally threaded sleeve slidably surrounding said shaft and extending through said support, said knob portion and said sleeve being keyed together to rotate as a unit, said sleeve having an annular portion contiguous to the other side of said support, and a lock-nut cooperating with said sleeve and located between said knob portion and said support, said nut being adapted to clamp said support between it and said annular sleeve portion to prevent rotation of said knob portion in either direction of rotation of said shaft.
  • a controldevice comprising an apertured support, a
  • knob assembly aflixed to said shaft. on one side of said support to facilitate manual positioning thereof and including a knob portion fastened to said shaft and an, externally threaded sleeve slidably surrounding said shaft and extending through said support, said knob portion and said sleeve being keyed together to rotate as a unit, said sleeve having an enlarged annular portion fastened thereto and contiguous to the other side of said support, an enlarged lock nut cooperating with said sleeve and located between said knob-portion and: said support, and annular friction washers surrounding said sleeve on both sidesof said panel'to facilitate manual positioning thereof and including a knob portion'fitted over the outer end of said shaft and fastened thereto and also including an externally threaded sleeve slidably surrounding said shaft and ex' tending through said panel, saidknob portion and said sleeve being keyed together to 'rotate as a unit, said knob
  • said knob portion has a control hub portion, a first elongated portion extending from one side of said hub to form a manually operable handle, and a second elongated portion extending from the opposite side .of said hub to form a pointer, said hub having a diameter less than the outer diameter of said lock nut and said elongated portions being cut away so that said knob fits over said lock nut;
  • knob portion is fastened to said'shaft by a plurality of set screws and said annular sleeve portion has an elongated tab portion to act as a stop in cooperation with a projecting stop provided on the inner side of said panel.

Description

June 3, 1958 w. J. SCHULTZ CONTROL DEVICE Filed April 28. 1954 William J. Schulrz I'l'llllltlv'll,
His AHorney United States Patent CONTROL DEVICE William J. Schultz, Peabody, Mass., assignor to General Electric Company, a corporation of New York Application April 28, 1954, Serial No. 426,177
9 Claims. (Cl. 74-504) This invention relates to control knob devices and particularly to improved means for locking the manually positionable knob portions of such devices against motion once the device has been adjusted or set at a particular position.
In many control devices, a control shaft may be moved to derive a range of control settings for the device in question, and such shafts are often equipped with manually positionable knobs to facilitate setting and adjustment thereof. It is often desirable to provide means for locking the shaft in place once it has been set in a particular control position, so that the control device will function as desired, unaffected by any careless or accidental forces applied to the knob and tending to change the setting. Moreover, such locking means should be strong and effective if any reliance is to be had for its performance, it should be simple and easy to manipulate, and it should be inconspicuous and at the same time in harmony with the remainder of the control assembly to achieve the most pleasing effect on the eye.
It is, therefore, an object of the invention to provide new and novel knob locking means for control devices embodying all of the desirable features and characteristics set forth above.
The invention will be best understood, and its objects and advantages apparent, upon reference to the detailed description set forth below when taken in conjunction with the drawings annexed hereto, in which:
Figure 1 is an exploded View, in perspective, of the improved control device, without the control shaft but showing part of a support panel; and
Figure 2 is a front view of the device, as it looks when assembled together; and
Figure 3 is a sectional view, in elevation, of the control knob assembly taken along the lines 3-3 in Figure 2, also showing a portion of the support panel as well as a part of the control shaft.
Referring now to the drawings, there is shown an apertured support in the form of a panel 4 having the aperture 5 through which extends the rotatable control shaft 6. The control knob assembly is fastened to the shaft 6 and comprises the knob portion 7, the enlarged lock-nut 8, the protective washer 9, the pair of resilient friction washers 11, 12, and the slidably mounted externally threaded sleeve 13 having the enlarged annular inner portion 14 formed thereon or attached thereto. In the arrangement shown, this enlarged portion is formed by staking the sleeve to a washer, but other convenientmethods of fabrication could be used so long as the enlarged portion is integral with the sleeve and rotates therewith.
As shown in Figure 3, the shaft 6 has its outer end fitted into a suitably shaped recess provided within the knob portion 7 and the knob portion is fastened to the shaft by means of a pair of set screws 15. In fitting the knob portion on the shaft, it is slipped over the end of the shaft and pushed in until the proper clearance is obtained between it and the outer side of the panel, after which it may be fastened securely on the shaft. In assembly of the Patented June 3, 1958 parts together, the knob portion is the last part of the knob assembly to be fastened in place, the other parts preceding it on the shaft with the sleeve 13 and friction washer 12 being the first in place on the inner side of the panel.
It is to be noted that the inner diameter of sleeve 13 is slightly larger than the diameter of the shaft so that the sleeve is slidably mounted on the shaft for a purpose to be described in greater detail below. Also, the outer diameter of sleeve 13 is slightly less than the diameter of aperture 5 to permit the sleeve to easily pass through the panel.
Next, the friction washer 11, protective washer 9, and lock-nut 8 are slipped over the shaft and then comes the knob portion 7, and, as shown in Figure 3 only, a lockwasher 16 in the form of a C-washer is slipped on the sleeve to serve as a stop for the lock-nut 8. The knob portion and sleeve are keyed together by means of the transverse slots 13a in the sleeve and the transverse key members 7 within the knob portion recess. This permits the sleeve and knob portion to be rotated together as a unit but does not prevent any motion of the sleeve along the shaft 6. The enlarged inner annular portion 14 has the tab 14a which may cooperate with the punched-out section 4a of the panel to serve as a stop in either direction of rotation of the control knob assembly. The lower part of Figure 1 illustrates the contiguous relationship of the inner parts, there being parts 4a, 14', and 14a, being identical with the corresponding upper members and forming part of a lower identical control knob assembly.
Also turning with the knob portion 7 is the protective washer 9, as these parts are keyed together through the cooperation between bent washer tab 9a and knob portion recess extension 7a. Or conversely, when the knob portion is stationary, the washer 9 remains stationary also.
To facilitate positioning of the knob portion 7, it is provided with an elongated portion 7b forming a handle therefor. Opposite the handle portion is the elongated part 70 forming a pointer for cooperation with a suitable scale which may be provided with the control device. These elongated portions are cut away, as at 7d, so that the knob portion fits over the lock-nut 8. The central hub 7e of the knob portion has a diameter less than the outer diameter of the nut 8 to facilitate manipulation of the nut. It is noted that recess extension 7a is formed in the elongated handle portion 7b.
With the above arrangement of parts in mind, it is apparent that with lock-nut 8 backed-ofi against its stop washer 16, the knob assembly can be manually manipulated to move the control shaft 6 to any selected position. The nut may be knurled to facilitate manipulation thereof, and if it is desired to lock the shaft in any position so selected, the lock-nut is rotated to clamp contiguous parts of the knob assembly to the support panel; that is, the panel is clamped between the nut and the inner sleeve portion 14. The friction Washers 11, 12 add to the clamping action to give positive and effective locking of the control knob assembly. It is noted that tightening of the nut does not tend to mutilate or destroy the friction washers, :because the protective washer 9 and the enlarged inner sleeve portion 14 do not rotate when the lock-nut is moved against the panel to draw the parts together. These parts only move with the knob portion 7, and with this portion held against rotation while drawing up on the nut 8, it is obvious that no rotational motion is imparted to either the washer 9 or sleeve portion 14.
Thus, the locking is quite simple to accomplish and it is most effective when completed. Moreover, a well arranged and compact assembly is provided, such that the locking means blends into the design of the knob portion, providing an overall effect that is pleasing to the eye, in addition to its being functional and utilitarian.
What I claim as new and desire to secure by Letters Patent of the United States is:
1. A control device comprising an apertured support, a rotatable shaft extending through said support, a knobassembly affixed to said shaft on one side of said support to facilitate manual positioning thereof, said knob assembly including a knob portion fastened to'said shaft and a' portionconnected to said knob portion, said portion surrounding said shaft and extending from said knob'portion through said support such that aflpart thereof is contiguous to the other side of said support, and means to clamp said part to said support to prevent movement of said knob portion in either direction of rotation of said shaft. Y I
2. A control device comprising an apertured support, a rotatable shaft extending through said. support; a knob assembly aflixed to said shaft on one side of said support to facilitate manual positioning thereof, said knob assembly including a first part contiguous to said one side of said support and a knob portion fastened to said shaft, said knob portion having a portion connected-thereto which surrounds said shaft and extends from said knob portion through said support such that said portion has a second part which is contiguous to the other side of said support, and means to simultaneously clamp both parts to said support to prevent movement of said knob portion in either direction of rotation of said shaft.
3. A control device comprising an apertured support, a rotatable shaft extending through said support, a knob assembly affixed to said shaft on one side of said support to facilitate manual positioning thereof, said knob assembly including a knob portion fastened to said shaft and a threaded portion connected to said knob portion, said threaded portion surrounding said shaft and extending from said knob portion through said support such that a part thereof is contiguous to the other side of said support, and a nut cooperating with said threaded portion to clamp said contiguous part to said support to thereby prevent movement of said knob portion in either direction of rotation of said shaft.
4. A control device comprising an apertured support, a rotatable shaft extending through said support, a knob assembly affixed to said shaft on one side of said support to facilitate manual positioning thereof, said knob assembly including a knob portion fastened to said shaft and a threaded portion surrounding said shaft andextending from said knob portion through said support such that a part thereof is contiguous to the other side of said support, a nut cooperating with said threaded portion to clamp portions of said support between said nut and said part to prevent movement of said knob portion in either direction of rotation of said shaft, and friction means disposed between said support and said contiguous part and between said support and said nut.
5. A controldevice comprising an apertured support, a rotatable shaft extending through said support, a knob assembly afiixed to said shaft on one side of said support to facilitate manual positioning thereof and including a knob portion fastened to said shaft and an externally threaded sleeve slidably surrounding said shaft and extending through said support, said knob portion and said sleeve being keyed together to rotate as a unit, said sleeve having an annular portion contiguous to the other side of said support, and a lock-nut cooperating with said sleeve and located between said knob portion and said support, said nut being adapted to clamp said support between it and said annular sleeve portion to prevent rotation of said knob portion in either direction of rotation of said shaft.
6. A controldevice comprising an apertured support, a
rotatable shaft extending through said support, a knob assembly aflixed to said shaft. on one side of said support to facilitate manual positioning thereof and including a knob portion fastened to said shaft and an, externally threaded sleeve slidably surrounding said shaft and extending through said support, said knob portion and said sleeve being keyed together to rotate as a unit, said sleeve having an enlarged annular portion fastened thereto and contiguous to the other side of said support, an enlarged lock nut cooperating with said sleeve and located between said knob-portion and: said support, and annular friction washers surrounding said sleeve on both sidesof said panel'to facilitate manual positioning thereof and including a knob portion'fitted over the outer end of said shaft and fastened thereto and also including an externally threaded sleeve slidably surrounding said shaft and ex' tending through said panel, saidknob portion and said sleeve being keyed together to 'rotate as a unit, said knob portion being recessed to receive a portion of said sleeve, said sleeve having an annular portion fastened to its-inner end contiguous to the inner sideof said panel, a lock nut threadably engaging said sleeve on the outer side of said panel between the panel and said' knob portion, a protective washer surrounding said sleeve between said nut and said panel, said protective washer being keyed to said knob portion, andannular resilient friction washers surrounding said sleeve on bothsides of said panel there being one between said protective washer and said panel and one between said annularsleeve portion and said panel, said nut being adapted to draw said annular sleeve portion up against said panel to thereby prevent movement of said knob portion in either direc-.
tion of rotation of said shaft.
8. The combination defined by claim 7 wherein said knob portion has a control hub portion, a first elongated portion extending from one side of said hub to form a manually operable handle, and a second elongated portion extending from the opposite side .of said hub to form a pointer, said hub having a diameter less than the outer diameter of said lock nut and said elongated portions being cut away so that said knob fits over said lock nut;
9. The combination defined in claim 8 wherein said knob portion is fastened to said'shaft by a plurality of set screws and said annular sleeve portion has an elongated tab portion to act as a stop in cooperation with a projecting stop provided on the inner side of said panel.
References Cited in the file of this patent UNITED STATES PATENTS France July 4,
UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 2,836,989 June 3, 1958 William J, Schultz It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.
Column 3, line 44, after "portion" insert connected to said knob portion, said threaded portion Signed and sealed this 10th day of February 1959.
( SEAL) Attest:
KARL H. AXLINE ROBERT C. WATSON Attesting Oflicer Commissioner of Patents
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2913243A (en) * 1957-02-07 1959-11-17 Leon Boro Model aircraft control
DE1131478B (en) * 1959-08-24 1962-06-14 Robert Louis Gach Rotary knob for rotating axes
US3053110A (en) * 1959-05-05 1962-09-11 Sanborn Company Floating lock for a shaft and the like
US4154125A (en) * 1977-07-05 1979-05-15 Beckman Instruments, Inc. Knob locking and drag device
US4237746A (en) * 1977-07-06 1980-12-09 Ranco Incorporated Drive arrangement for setting mechanical apparatus, especially thermostats
US4487089A (en) * 1981-12-18 1984-12-11 Rockwell International Corporation Miniature adjustable potentiometer clutch
US4905537A (en) * 1983-02-12 1990-03-06 Shimano Industrial Company Limited Speed-changing device for a bicycle
US20050129487A1 (en) * 2003-12-16 2005-06-16 Kelly Thomas L. Cowboy-hat shaped washer for a metal roof deck and method for fastening a roof deck

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1639885A (en) * 1922-09-13 1927-08-23 Goodrich Co B F Precision adjustment device
US1695479A (en) * 1926-03-26 1928-12-18 Scovill Manufacturing Co Condenser
US2097619A (en) * 1937-01-04 1937-11-02 Grimes Leon Aaron Toilet tank lever mounting
FR832730A (en) * 1938-01-28 1938-10-03 Gearbox with automatic speed change by friction clutch
US2275284A (en) * 1940-08-14 1942-03-03 Rca Corp Indexing means
US2444485A (en) * 1947-02-24 1948-07-06 American Optical Corp Control knob and associated structure
US2483150A (en) * 1948-03-03 1949-09-27 Gen Electric Indicator device
US2533921A (en) * 1945-02-15 1950-12-12 Parker Appliance Co Valve assembly
US2642503A (en) * 1951-01-22 1953-06-16 Arrow Hart & Hegeman Electric Adjustable multiple circuit control switch
US2643632A (en) * 1950-10-06 1953-06-30 Western Electric Co Coaxial dial locking device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1639885A (en) * 1922-09-13 1927-08-23 Goodrich Co B F Precision adjustment device
US1695479A (en) * 1926-03-26 1928-12-18 Scovill Manufacturing Co Condenser
US2097619A (en) * 1937-01-04 1937-11-02 Grimes Leon Aaron Toilet tank lever mounting
FR832730A (en) * 1938-01-28 1938-10-03 Gearbox with automatic speed change by friction clutch
US2275284A (en) * 1940-08-14 1942-03-03 Rca Corp Indexing means
US2533921A (en) * 1945-02-15 1950-12-12 Parker Appliance Co Valve assembly
US2444485A (en) * 1947-02-24 1948-07-06 American Optical Corp Control knob and associated structure
US2483150A (en) * 1948-03-03 1949-09-27 Gen Electric Indicator device
US2643632A (en) * 1950-10-06 1953-06-30 Western Electric Co Coaxial dial locking device
US2642503A (en) * 1951-01-22 1953-06-16 Arrow Hart & Hegeman Electric Adjustable multiple circuit control switch

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2913243A (en) * 1957-02-07 1959-11-17 Leon Boro Model aircraft control
US3053110A (en) * 1959-05-05 1962-09-11 Sanborn Company Floating lock for a shaft and the like
DE1131478B (en) * 1959-08-24 1962-06-14 Robert Louis Gach Rotary knob for rotating axes
US4154125A (en) * 1977-07-05 1979-05-15 Beckman Instruments, Inc. Knob locking and drag device
US4237746A (en) * 1977-07-06 1980-12-09 Ranco Incorporated Drive arrangement for setting mechanical apparatus, especially thermostats
US4487089A (en) * 1981-12-18 1984-12-11 Rockwell International Corporation Miniature adjustable potentiometer clutch
US4905537A (en) * 1983-02-12 1990-03-06 Shimano Industrial Company Limited Speed-changing device for a bicycle
US20050129487A1 (en) * 2003-12-16 2005-06-16 Kelly Thomas L. Cowboy-hat shaped washer for a metal roof deck and method for fastening a roof deck
US8931232B2 (en) * 2003-12-16 2015-01-13 Thomas L. Kelly Cowboy-hat shaped washer for a metal roof deck and method for fastening a roof deck

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