US1182707A - Controlling-lever. - Google Patents

Description

F. H. QUADE CONTROLLING LEVER.

APPLICATION FILED JAN.27, 191s.

Patented May 9,1916.

FRANK H. QUADE, JR., 013 FRESNO, CALIFORNIA.

CONTROLLING-LEVER.

Specification of Letters Patent.

Patented May 9, 1916.

Application filed January 27, 1915. Serial No. 1,778.

To all whom it may concern Be it known that I, FRANK H. QUADE, Jr., a citizen of the United States, residing at Fresno, in the county of Fresno and State of California, have invented certain new and useful Improvements 1n Controlling-Levers, of which the following is a specification.

This invention relates to controlling levers, and has for its object the provision of a simple and efficient device whereby mechanism controlled by the lever will be effectually locked in the normal or operative position and may be quickly released or rendered inoperative when so desired.

The device is intended more particularly for use upon printing machines in which it is desirable to have means whereby the printing mechanism may be quickly thrown out of operation at times to avoid breakage or other damage of some of the parts. device is capable, however, of use in all classes of machinery in which it is desirable at times to stop the normal operation.

Particular objects of the present invention are to provide means whereby the lever will be effectually retained in its normal position, and to provide means whereby a continuous movement in one direction will first release the lever and then throw it to inoperative position whereby to arrest the movement of the working parts of the machine upon which the lever is mounted.

The invention also seeks to improve the construction and arrangement of the several parts to the end that the efficiency and durability of the device may be increased.

Further objects of the invention will appear as the description of the same proceeds, and the invention consists in certain novel features which will be first fully described and then more particularly pointed out in the claims following the description.

The invention is illustrated in the accompanying drawings, in which:

Figure 1 is an elevation of a controlling lever embodying my improvements and showing the same in its normal locked position; and Fig. 2 is a similar view, showing the lever shifted to the throw-oif or inoperative position.

In carrying out my inventiomI employ a main lever 1 which is fulcrumed in any convenient manner, as by a screw 2, upon a .1-.. A4: A mnnkhw mid main The thereof, and the said link extends to mechanism which is controlled by the lever. The lower extremity of the lever may also be engaged with a latch or suitable device whereby additional mechanism may be simultaneously controlled.

To the upper end of the lever 1, I pivotally attach a handle member or releasing lever 6, which is shown as provided with a cushion handle or enlargement 7 at its upper end and has its lower end below its pivot S somewhat tapered, as shown at 9. The pivot 8 may conveniently be a headed rivet, and a resilient washer, indicated at 10, may be arranged between the head of the rivet and the body of the release lever 6 so as to permit the handle to be readily manipulated but, at the same time, tend to hold it frictionally in the position in which it may be set. Lugs 11 or other convenient stops are provided upon the main lever 1 below the pivot 8 and at the opposite sides of the tapered end 9 of the handle to limit the independent movement of the handle relative to the lever.

Below the handle I pivotally mount upon a pin or lug 12 projecting from the lever a latch or dog 18 which is provided on its upper edge with a cam surface 11 upon which the extremity of the handle is adapted to ride. The dog or latch 13 is also provided with a notch or recess 15 adapted to engage a keeper which, in the present instance, is illustrated as consisting of a roller 16 mounted upon a rivet or stud 17 projecting from the main frame 3. Beyond the notch or recess 15, the dog or latch is provided with a straight edge 18 and at the lower corner of the latch I provide a pin 19 to which one end of a spring 20 is attached. The opposite end of the said spring 20 is attached to or engaged upon a lug or in 21 on the lever 1, and it will be readily understood that the said spring tends to hold the latch thrown upwardly against the keeper so that, in the normal position of the parts, the said keeper will be within the notch or recess 15, as illustrated in Fig. 1.

A spring 22 isattached to the lever 1 below the fulcrum thereof, and the opposite end of said spring is secured at any convenient point on the frame so that the said spring will be extended, when the lever is in its normal position, and will at once conin Fig. 2. To limit the movement of the lever under the influence of the spring 22, I provide a stop 23 upon the main frame against which the lever impinges in its releasing or throw-oil movement. The movement of the lever in the opposite direction is limited by the keeper as shown in Fig. 1.

The construction and arrangement of the several parts being thus made known, it is thought the operation of thesame will be readily understood. When the machine upon which the lever is mounted is operating normally, the lever 1 will be vertical, as shown in Fig. 1, and the handle member will be thrown over to the right so that the tapered operating extremity of said member will be in contact with but not exerting pressure upon the cam edge lei of the latch. The spring 20 will be retracted so as to hold the latch in its upper position with the notch therein in engagement with the keeper and the lever will be thereby locked against movement under the influence of the spring 22. Should it become necessary from any cause to stop the operation of the machine, the handle member 7 is pushed toward the left in the drawings, thereby swinging the member about its pivot 8 and causing the lower extremity thereof to ride upon the cam edge 14 and swing the latch about its pivot 12 against the tension of the spring 20, this movement causing the latch to be disengaged from the keeper whereby the lever is free to swing to the position shown in Fig. 2 under the influence of the spring 22. The movement of the lever toward the position shown in Fig. 2 will be facilitated by the force applied to the handle member 7 inasmuch as said member will swing upon its pivot 8 until it impinges against the right hand stop 11 at which instance the latch will be entirely freed from the keeper and the force applied to the handle member will then be transmitted to the lever so as to co-act with the spring 22. It will be readily seen that a comparatively light blow upon the handle 7 by the operator will serve to quickly throw the operating mechanism to an inoperative position.

When it is desired to again permit the machine to operate, the handle is swung in the opposite direction so that the lower portion thereof will swing against the left hand stop 11, and this movement will relieve the latch of the holding force exerted by the handle so that the said latch may respond to the force exerted by the spring 20 and quickly engage the keeper as the parts are returned to the position shown in Fig. 1.

It will be readily noted that the parts of my device are compactly arranged and are simple in their construction. The lever has no sliding movement upon its fulcrum but merely swings about the same so that it is not necessary for the operator to depress the lever before imparting lateral movement to the same. The spring 20 will hold the latch firmly in engagement with the keeper, so that the accidental stoppage of the machine will not occur, but willyield instantly to a light tap upon the handle so that no great exertion is required of the operator to manipulate the lever. The throw-off movement of the lever is arrested by the stop 23 so that breakage or disarrangement of any of the parts connected with the lever will not occur while the movement of the lever in the opposite direction is arrested by the keeper and rebound thereof is prevented by the latch engaging the keeper, as will be readily understood.

It will be noted, upon reference to Fig. 2, that, when the lever is in inoperative posie tion, the latch has its straight edge in contact with the keeper and the pressure exerted by the latch against the handle is almost in a longitudinal line of the handle so that the tension of the spring 20 aids in holding the parts in inoperative position. The pressure of the latch'against the keeper is exerted almost vertically thereon so that the movement of the lever toward working position is resisted by the force of the spring and the friction of. the parts and, consequently, accidental shifting of the device from the position illustrated in Fig. 2 is not apt to occur. It will also be readily noted, upon reference to Fig. 1, that the throw-off movement of the handle is exerted positively and directly upon the latch and is in a direction from the pivot of the latch and toward the keeper so that a slight movement of the handle will release the latch from the keeper and the continued move ment of the handle in the same direction 105 will throw the lever to inoperative position. The spring 20 is so disposed that its force will never be exerted along a line radial to the pivot of the latch and, consequently, the spring will not only tend to hold the latch 110 in engagement with the keeper but, when the latch is released from the keeper, the tension of the spring will be increased so that it will instantly engage the 'keeper upon the movement of the lever to the work- 115 ing position.

Having thus described the invention, What is claimed as new is l. The combination with a frame, of a keeper thereon, frame, a latch pivoted upon the lever to move in a plane parallel with the face of the lever and provided in one edge with a notch to engage the keeper and having a cam formed on said edge between its pivot 125 and the notch, a spring attached to the lever and the latch and tending to hold the latch in engagement with the keeper, and a handle pivoted upon the lever for move ment in a plane parallel with the face there- 130 a lever fulcrumed upon the of and having its end arranged to ride over the cam edge of the latch toward the notch therein to release the latch from the keeper.

2. The combination with a frame, of a keeper thereon, a lever fulcrumed upon the frame below and adjacent the keeper, the keeper limiting in one direction, a latch pivoted at one end to the lever and projecting beyond the edge thereof to engage said keeper, means acting upon said latch to normally holdit in engagement with the keeper, a handle pivoted to the lever and acting upon the latch to release it from the keeper, the latch, lever and the handle moving 1n parallel planes,

stops upon the lever at opposite sides of the handle whereby said handle may actuate the lever, and a stop in the path of the lever at the side thereof remote from the keeper.

3. The combination with a frame, of a keeper projecting laterally therefrom, a lever fulcrumed upon the frame below and adjacent the keeper, a latch pivoted upon Copies of this patent the movement of the lever may be obtained for five cents each,

the face of the lever and projecting beyond the edge of the same and provided in its up per edge with a notch adapted to engage said keeper, and with a cam surface extending from the notch to the pivoted end of the latch, a handle pivoted upon the lever above the latch and having its lower end bearing upon the cam surface of the latch, the latch and the handle being disposed in the same plane parallel with the plane of movement of the lever, means whereby movement of the handle will be communicated to the lever, and a spring secured at one end to the lever below the latch and at its opposite end to the latch below and eccentrioally to the pivot of the same.

In testimony whereof I aflix my signature in presence of two witnesses.

FRANK H. QUADE, JR.

Witnesses:

710K W. PARSONS, B. A. MoALrINn.

by addressing the Commissioner or l'atents.

Washington, D. G.

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