US1146317A - Locking device. - Google Patents

Description

E. FAVf\RY. LOCKING DEVICE.

APPLICATION FILED AUG-28 1909- 1, 146,3 1 '7. Patented July 13, 1915;

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'ETHELBERT FAVARY, OF EAST BOSTON, MASSACHUSETTS.

LOCKING DEVICE.

Specification of Letters Patent.

Patented July 13, 1915.

Application filed August 28,1909; Serial No. 515,015.

tion to the other; and has for its object the holding of the moved part fixedly in posi tion, except when movement is imparted to it by an operating element.

This invention is applicable to a great variety of devices used for difierent purposes, but particularly for the locking of operating levers for the control of valves, operation of brakes, or any parts to be set in a plurality of positions, and particularly to supplant use of levers in'the locking of which it has been common practiceeto use a notched segment. My; device permits the locking of such operating or adjusting levers or parts in an infinite number of positions, not limited'by a predetermined number of notches as in the case of a notched segment.

While looking devices of this general character have been heretofore suggested,

my invention resides in the simplification of construction, the relative arrangement of parts and the efficiency with simplicity of construction, affording a secure locking means withthe aforesaid infinite number of possible positions.

In the drawings attached hereto and forming a part hereof, I have illustrated specific embodiments of my invention.

Figure I is a lateral view of casing with part of cap removed, showing an operating lever, an operated and intermediate locking mechanism. Fig. II is a vertical section through Fig. I. Fig. III is a top view of the locking casing with part of the shell broken away. Figs. IV and IV are views similar to Fig.III, with modified releasing means. Fig. V is a view similar to Fig. I with modifications'in detail. Fig. VI is a vertical section of Fig. V, while Fig. VII is a top view of Fig. V. Fig. VIII is a plan view of a modified form of operating lever arrangement. Fig. IX is a section of Fig.'

vIII showing detaili of modified'form of locking means.

In the figures, C is an operating lever, B

an operated part which is locked to or integral with the hub or cam Dr The operated part B may be rotatively locked or secured to cam D by means of the shaft A.

Lever C is connected or integral with a plate or part C, which carries one or more I ai'rof de endin arms 0. A casin A is fixed as by a base, A, against rotation and constitutes an anchor for locking purposes.

A lockingmeans, such as ball E is located between the outer surface of block D, and the inner surface of fixed casing A, contacting with two surfaces on block D, each of which two surfaces is inclined toward the inner'surface of the casing A, so as toconstitute a cam face and engage the ball E to lock block D to casing A- by jamming the lockingball E between the two surfaces.

tioned and fashioned to engage the ball or locking means E, upon a slight relative movement of the operating handle G.

A spring F, between the ball and cover or part C, tends to force the-locking means, ball E, between the casing and the hub or cam member D, into locking contact.

Between lever C and plate C and the operated part and the cam D, there is a slight relative movement limited by the engagement of dependent members 0 C, with projection D on D.

In the form shown in Figs. IV and 1V the toes or means for releasing the ball looking are attached pivotally to the operated hub D. The plate 0 has depending lugs 0 and these engage the releasing toesC to pivot them slightly on their connection to the hub D.'

In the form shown in Figs. V, VI and VII, theoperatinglever C having the plate C, has the projecting lugD, which as seen in Fig. VII has beveled edges engaging projections on a plate D. A spring F engaging' a nut on the shaft A, presses the plate C .onto the plate D. Conical locking means E is in this way forced into contact with the conical inner face of casing A, and the conical face of hub D at a point where the face of hub D has a reentrant surface D.

In Figs. VIII and IX, a modification of the construction just described is shown, in

which a conical locking means isforce'd'normally downward by the spring F, and a reentrant surface on the hub D of the operated member engages the-cam to effect a locking between it and the innerqface of easing A. The lever C is pivoted so that a lateral instead of a rotary movement releases the locking means.

The operation of the device is, as follows: Upon the 'movement of the handle C the slightest rotation of plate C and depending parts C, will bring the toe of the depend ing part in contact with the locking means as ball E, and due to theangularity of that by this construction I obtain with a single ball a secure locking against rotation in either direction of an operated part.

Similarly, a single conical cam, shown at E in Figs. VI and IX, is normally pressed bythe spring F or F so that it acts as a twoway lockbetween the rentrant portion of the surface of the hub D, which is the operated part, and the stationary casing A.

The first movement of the operating lever C in any case efiects a release of the cam, and after this slight differential movement which holds the locking ball or conical means out of engagement, the further movement of lever C rotates the operated part any desired extent. Immediately upon letting go of the handle C, the spring action sets the single operating means, whether ball or cone, into the locking posit-ion so that any tendency of the operated part to move is resisted by the cam action between the hub D and the fixed casing A and the intermediate single locking member.

As shown in Fig. 5 there may be two locking rollers, and similarly two or more locking balls .orlocking rollers may be means.

used, each having its suitable releasing While 'the' reentrant angle on the hub D as shown gives a conslderable obliquity to the locking face with respect to the -stationary casing A, it is obvious with suitable preparation of parts the rentrant angle may be very shallow, or may even consist simply of a'slabbed-off or sliced-off portion of the surface of the hub D.

While I have shown and described specific forms of my own invention, I do not thereby limit myself to such particular constructions as various modifications are possiblewithout departing from the spirit of my invention.

What I claim and desire to secure by Letters Patentis:

1." In a locking device in a two-way locking mechanism, a stationary member, a member to be moved concentric with said stationary 'member, a single locking member adapted when in one position to lock said parts againstrelative movement in either direction by movement substantially parallel with the axis of rotation, an operating means adapted to release said locking member from its locking position and by further movement to move said operated member.

2. In a locking device, a cam faced rotary part to be operated, an operating lever pivoted on the same axis as said operated part, a stationary cam faced casing having its cam face opposed to the cam face on said operated part, said cam face portions incline'd to each other, a single cam-locking device, automatic -means for forcing said locking device in a direction parallel to the axis of rotation of the operated member, means associated with said operating lever for moving said locking device in opposition to said automatic locking means.

3. In combination in a locking device for two-way operation of a control lever, a rotary operated part, a control lever having its I axis of movement co-incident with the axis of the operated part, means associated with the operated part and the control lever whereby a slight relative movement is permitted, a fixed member concentric to the operated part, a locking wedge cam faced part of said operated part juxtaposed to said fixed member whereby a single wedge in one position automatically effects the operating of said locking part with respect to said fixed member against movement in either direction.

4-. In combination in a twoway locking device, an operated part, an operating handle, a fixed casing, spring connections between said operating handle and operated part, a-conical locking roller adapted to engage a fixed member and said operated part, whereby said spring connections between the operating handle and operated part force said locking device into operative position, whereby a single locking device holds said operated part with respect to said fixed member against-rotation in either direction.

5. In combination in a two-way locking device, anoperated part, an operating handle, a fixed casing, a locking member between said fixed casing and operated part adapted in its normal position to lock the operated part against movement of rotation in either direction, means for normally moving said member in a direction transverse to the movement of rotation of said operated part into said double locking position, connections between said locking memher and operating handle whereby the initial movement of the operating handle releases said locking means, for the purpose described.

6. An automatic locking device for rotary parts, an operated member and anoperating member mounted to turn about a common axis, a stationary casing concentric with said common axis, a member adapted to lock said operated member to said stationary member against rotation in either direction, means associated with said operating member adapted to move said locking member substantially parallel with the common axis of the other members, whereby said locking member is removed from its locking position by a slight movement of the operating part with relation to the operated part.

Signed at East Boston, Mass, this 26th day of August, 1909.

ETHELBERT FAVARY.

Witnesses:

JOSEPH GARARD JACKSON, LILLIAN A. Boonno'r'r.

Gopies of this patent may be obtained for five cents each, by addressing the Gommissioner'of Patents. Washington, D. 0.

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