Untitled record

Application filed June 18,1889. Serial No. 314,682, (No model.)

To all whom it may concern:

Be it known that I, Thomas Charlton Booth, a citizen of the United States, residing at New York, in-the county and State of 5 New York, have invented new and useful Improvements in Compression-Cocks, of which the following is a specification.

This invention relates to an improvement in compression-cocks adapted to close or comio press flexible tubes; and the invention consists in the details of construction set forth in the following specification and claim, and illustrated in the accompanying drawings, in which—

Figure 1 is a section of a cock along x x, Fig. 3. Fig. 2 is a view similar to Fig. 1 with parts in a different position than in Fig. 1. Fig·. 3 is a plan view of the cock. Fig. 4 is an inverted plan view of Fig. 3.

Similar lettersindicate corresponding parts.

In the drawings, the letter A indicates a base having a compression-lever B C. The base A carries a spring D, which is interposed between the lever B C and the object 25 to be compressed, such as a flexible or rubber tube E. The spring D prevents the lever B C from chafing the tube E when said lever swings or moves. The base A has a spring or elastic support F, on which the tube E is 30 made to rest. When the lever B C forces the spring D and tube F toward the base A, the spring F can yield more or less, according as the tube E is of greater or less thickness. The cock will thus serve for compressing 35 tubes of different thicknesses and avoid the necessity of having a series of cocks, each one gaged for a tube of one size only.

When the parts are in the position shown in Fig. 1, the tube E is compressed or closed. When the parts are in the position shown in 4.0 Fig. 2, the tube E can be removed from the cock. The base A, with the springs D F, as also the ears G, can be formed of one piece of metal. The ears G serve as bearings for the fulcrum H of lever B O'. A cut or open- 45 ing I in the spring D allows passage for the tube E when being inserted or withdrawn.

Heretofore a flexible conducting-tube has been provided with a cut-off made of a tubular piece of metal comprising a spring tongue- 50 piece operated on by a cam-lever to compress the flexible tube; and such, therefore, I do not broadly claim.