US661838A - Means for lifting and regulating transoms. - Google Patents

Description

No. 66l,838. Patented Nov. I3, I900. n. ADAMS.

MEANS FOR LIFTING AND REGULATING TRANSOMS.

(Application filed Sept. 23, 1899.:

(N0 Model.) 2 Sheets-Sheet I,

W/////// [III/III] No. 66l,838. Patented Nov. l3, I900. R. ADAMS.

MEANS FOR LIFTING AND REGULATING TRANSOMS.

(Application filed Sept. 23, 1899. (No Mqdel.) 2 Sheets-$heei 2.

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ROBERT ADAMS, OF LONDON, ENGLAND.

MEANS FOR LIFTING AND REGULATING TRANSOMS.

SPECIFICATION forming part of Letters Patent N 0. 661,838, dated November 13, 1900.

- Application filed September 23, 1899. serial No. 73l, l52. [N0 model.)

T0 at whom it may concern:

Be it known that I, ROBERT ADAMS, engineer, a subject of the Queen of Great Britain, residing at 67 Newington Causeway, London, England, have invented certain new and useful improvements in means or apparatus for lifting, regulating, and otherwise operating ment a required distance and so that such rod, 1

bar, plate, rope, cord, or the like cannot move either way without being operated upon.

According to my invention I make use of a rack-and-pinion or pinion-and-gearing movement and provide the same with means whereby the motion thereof in either direction is automatically arrested on the operator removing his hand from the winder, key, knob, or other means for communicating motion to the pinion.

In order that my said invention may be particularl y described and ascertained, reference is hereby made to the accompanying drawings, in which similar letters of reference indicate corresponding parts.

Figures 1, 2, and 3 illustrate a means for controlling the motion of the pinion by a pawl and cam-wheel. Figs. 4, 5, 6, and 7 illustrate a pawl locking device without a cam-wheel.

Figs. 8, 9, 10, and 11 illustrate a means orsub stitnte for the cam-wheel for disengaging the pawl. Figs. 12, 13, and 14 illustrate means for locking the pinion without a pawl.

Referring to Figs. 1, 2, and 3, a is a rack gearing with a pinion b, mounted within the case 0.

(Z is a pawl pivoted at d engaging with the teeth of the pinion, d being a stud, pin, roller, or other projection in contact with the edge of the cam-wheel e, which is also mounted in the case 0, but capable of partial rotation independently of the pinion I).

f is a spring or spring-pawl arranged to act as a brake or check on the cam-wheel e.

The pinion and cam-wheel are each formed with a socket, as shown, that of the camwheel being shaped to fit the shank of a key, winder, or other motion-transmitter and that of the pinion being irregularly shaped to allow of a partial rotation of the shank therein. Thus in Fig. l the shank if turned to the left would first communicate motion to the cam-wheel e and afterward to the pinion as well, as shown in Fig. 2. The boss of the cam-wheelis sunk within the pinion, as shown in Fig. 3, in which it is capable of a partial rotation, the external bosses or journals of of the pinion and cam-wheel acting as pivots working in hearings in the case 0. The pinion and cam-wheel are arranged so that on a suitable key, winder, or other appliance being inserted and turned in one direction the pinion and cam-wheel are free to rotate as an ordinary ratchet-wheel; but on being turned the reverse way the key or the like causes the cam-wheel to partially rotate and raise the pin d, thus throwing the pawl d out of gear with the teeth. When the hand is removed from the motion-transmitter, (or when the key or the like is withdrawn,) the pinion partially rotates a short distance (by reason of the weight or power on the rack) and partially rotates the cam-Wheel until the support for the pin (1 is removed, when the pawl d drops and engages with the pinion.

The cam-wheel may be otherwise shaped, and in some instances it takes the form of a star or ratchet wheel arranged to act upon a projection on the end of the pawl, (or upon the end of the pawl itself,) so as to lift the pawl out of gear with the pinion. The cam, star, or other wheel e is free to rotate independently of the pinion b a distance equal to one or more teeth of the pinion; but the socket for-the key or means for operating in both pinion and disengaging wheel is preferably arranged to coincide sufficiently, as shown on the drawings, (but maybe otherwise formed,) so that the key may be readily inserted, yet allowing for the necessary independent motion of the one relatively to the other.

Figs. 4, 5, 6, and 7 illustrate another arrangement of the pawl whereby the camthe pinion b.

wheel is dispensed with. The case 0 is shown, Figs. 4 and 5, of a special design to iaccommodate the working parts and in such a manner that the case itself forms the bearing for The part c is for the rack, c is for the pawl d, and c for the pinion b, which is formed to approximately fi't'the recess 0 provided for it. In this device the pawl d is situated at the back of the pinion b and is fulcrumed at d in the case, a suitable spring, such as that shown, being provided.

The pawl is formed with projections (1 adapted to engage with the teeth of the pinion Z? or with teeth or projections on the back face thereof. either way, it is necessary to first disengage To operate the pinion the pawl d by [pressing the key or the like with a wedge-piece 7i, arranged to impinge upon the corresponding wedge projection d,

integral with the pawl d. It will be seen that when the plate or lever h is pressed toward the pinion the wedge-pieces h d engage and cause the pawl to lift outof gear with the pinion. The case is formed to accommodate the working parts, as described with reference to Figs. 4 to 7 and with suitable modifications.

Fig. 11 is a modification in which the project-ion d on the pawl cl is extended downward beside thepinion b to form a finger arranged to be acted upon by a conical flange integral with or movable upon the key orthe like, whereby the pawl is lifted out of gear when the key (or the movable conical'flange) is pressed-inward.

Figs. 12, 13, and 14 illustrate the application of a double crown-toothed disk z to the pinion 1) instead of the pawl d. The pinion has teeth m formed thereon, engaging with teeth m on the crown-disk 6. These teeth are sufiiciently deep to insure their enga'gement at all times, so that the disk z'and the pinion balways revolve together. The disk 2' is'also formed with teeth 7 adapted to engage with teeth cast or otherwise formed on the for pressing apart the-pi'nion bzand the disk '5, whereby the whole is interlocked with the. case, as in a clutch action.

To operate the mechanism, it is only necessary to insert the key or winder or the like and press the same, when the flange of the key or the like forces'back the disk onto the pinion, thereby disengaging the teeth 'i from the teeth 2' and permitting the pinion and disk to revolve. On removing the key or the pressure therefrom the spring instantly drives the disk?) and pinion b apart, causing the whole to again become locked with the case.

The shape of the teeth 2" i m m may be varied as preferred, ratchet-teeth being sometimes employed instead of those illustrated. Similarly the teeth m we may be dispensed with and other sliding connections (such as pins and sockets) maybe used instead thereof.

The arrangements illLustrat-ed in Figs. 6 to 10 maybe further modified by arranging the pinion to slide so as to engage with teeth on the case when in its normal position of rest ('i-nsteadiof the pawl, Figs. 6 and 7) to carry a conical flange adapted to engage with and lift the pawl, :(in place of the plate or lever h, Figs. 8, 9, and 10.) Also the crown-disk i may be placed at the backtof the pinion and arranged to be always in contact with the teeth of the case, but capable of disengaging from those on the back of the pinion by the ap plication of pressure to the key, winder, or the like. Suitable springs are fitted where necessary to effect the proper working of the mechanism.

The cases may be provided with flanges or other means for attachment suitable to the purpose for which the regulator is required.

The pinion may be mounted on a shaft and the disengaging gear operated by a key, winder, or other suitable instrument separately or in combination with cords and pulleys or other gear.

The key tor hand use-is sometimes provided with a flange or one or more pins capable of being moved on the key-shaft by exterior means fitted to the handle.

I claim- 1. Thecombination ofa pinion, a pawl normally in engagement therewith, and means directly applied to said pinion for operating the same and releasing the pawl.

2. Apinion, means normally in engagement therewith to prevent the rotation thereof, and means directly applied to said pinion for simultaneously operating the samea-nd releasing the means to prevent rotation.

In testimony whereof I "have hereunto set my hand in presenceof two subscribing witnesses.

ROBERT ADAMS. Witnesses:

GEORGE O. DOWNING, FREpc. HARRIS.

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