US662445A - Roll-relieving device. - Google Patents

Description

.0 0 l 2 V o N d 8 t n 9 t a P D N W E L H U K C ROLL RELIEVING DEVICE.

(Application filedDec. 22, 1899.1

2 Sheets-Shae; I.

(No Model.)

INVENTOR WITNESSES m: NORRIS PETERS cu. PHOYOLUTNOW WASHINGTON, o. c

No. 662,445. Patented Nov. 27, I900.

. c. KUHLEWIND.

ROLL RELIEVING DEVICE.

(Application filed Dec. 22, 1899.1

2 Sheets-Sham 2.

(No Modal.)

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NlTED STATES ATENT rricn.

CORNELIUS KUI-ILEWIND, OF KNOXVILLE, PENNSYLVANIA, ASSIGNOR TO THE HYDRAULIC VALVE AND REGULATOR COMPANY, LIMITED, OF PITTS- BURG, PENNSYLVANIA.

.ROLL-RELIEVING DEVICE.

SPECIFICATION forming part of Letters Patent No. 662,445, datedNovember 27, 1900.

Application filed December 22 1899. Serial No. 741,209. (No model.)

To all whom it may concern.-

Be it known that I, CORNELIUS KUHLE- WIND, of Knoxville borough, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Roll-Relieving Devices, of which the following' is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in

to whieh-- Figure 1 is a top plan view of my improved relief device, and Fig. 2 is a sectional side elevation of the same. i

'My invention relates to devices for reliev- I5 ing the pressure upon rolls and similar apparatus when such pressure reaches a certain v limit, and is designed to provide a device of this character which will automatically relieve the pressure and may be made in compact form as a breaker which can be used with existing mills.

In the drawings, 2 represents a hollow breaker having a vertical cylindrical screwthreaded socket containing a correspondingly 2 5 screw-threaded plug 3, arranged to rotate and move vertically therein. Above this rotary plug is a cylindrical block 4, the upper portion of which is squared and fits in a square hole in a cover-plate 5 to hold the block against rotation. An annular boss 6 upon the top of the screw-plug fits in a corresponding recess in the base of the block and holds these partsin correct relativeposition. The lower end of the screw-plug is provided'with a circular boss 7, which fits in a corresponding recess in the top of a wedge-block 8, having an inclinedlower face fitting upon the corresponding upper face of a horizontallymovable wedge-block 9, which rests upon the floor of the cavity in the breaker. The wedgeblock 9 is provided with a central square hole containing a locking-block 10, having alocking projection with inclined faces which fits in a recess in the lower part of Wedge-block 8. The lower face of the locking-block is inclined and fits upon the top of the head 11 of a horizontal slide 12, which is provided with a stem 13, extending out through the breaker. The slide is providedwith side recesses which contain depending lugs in the horizontal wedge-block, so as to draw out this block after the slide is pulled out a short distance. A spiral spring 14 surrounds the stem within the socket in the breaker and bears upon the end of wedge-block 9, normally forcing it inwardly. A spiral spring 15 within the spring 14 closely surrounds the stem 13 and bears against the base of the slide and at its outer end against a cross-head 16, sliding on guides 16, secured to the breaker. The outer portion of the guides 16 are screw-threaded to receive adjusting-nuts 17. To the stem 13 at its outer end is secured an cared socket 18, connected by pivotal link 19 to the curved lever 20. The lever is fulcruined at 21 and is provided with a slot 22, engaged by the upper pivot-pin of the link, so that outward movement of the stem in the automatic operation of the device will not actuate the handlever.

To reduce the jar and vibration-which occurs in the ordinary operating of the rolls when the piece enters the pass therein, 1 provide the upper block 4 with side wedge-faces which contact with similar faces on blocks 23, which blocks have outer inclined faces coacting with similar faces on blocks 24, :niovable longitudinally of the breaker and normally forced forward by springs 25. This sup- 8o plemental wedge system tends to lift the block 1 slightly from the screw-plug and is arranged to be actuated by the ordinary working pressure upon the rolls. As the piece enters the rolls the block 4 will be forced down in contact with the screw-plug, moving such wedge system against its yielding pressure, and thus cushioning the action. The parts remain in this position until excessive pressure is exerted upon the rolls, as by a piece sticking 0 therein, and when this pressure exceeds a certain limit the block at, being forced down, will cause the screw-plug to turn and move downwardly. This turning action will force the locking-block downwardly into the hole in the wedge-block 9, the slide moving outwardly against the pressure of spring 15. As soon as the locking-block moves down the wedge-block 9 is also forced outwardly against the pressure of the spring 14. The pressure number of parts by,increasing the frictional resistance, while the wear upon it will be substantially uniform.

Many variations may be made in the form and arrangement of the parts without departing from my invention.

I claim l. A relief device, having a vertically-movable block, a screw arranged to be forced endwise by the movement of the block, a nonrotatable innerly-screw-threaded socket surrounding the screw and a yielding pressure device acting upon the screw; substantially as described.

2. In a relief device for rolls, a screw arranged to be acted upon by the pressure on the hearings, a non-rotatable socket having inner screw-threads engaging the screw and a yielding spring and wedge system coacting therewith; substantially as described.

3. In a relief device, a vertically-movable screw supported in a non-rotatable screwthreaded socket; a yielding pressure device arranged to hold the screw in place, and a hand-controlled device for releasing the yielding pressure device; substantially as described.

4. A relief device havinga vertically-movable block held against rotation, an endwisemovable screw coacting therewith and arranged to be rotated by end pressure thereon, a wedge arranged to be actuated by the movement of the screw, and a yielding pressure device coacting with the wedge; substantial'ly as described.

5. A relief device having a reciprocatory block held against rotation, a screw supported in a screw-threaded socket and arranged to bear against the block, a wedge coacting with the opposite end of the screw, a sec ond spring-pressed wedge coacting with said wedge, and locking mechanism arranged to hold the wedges in place; substantially as described.

6. In a relief device for rolls, an endwisemovable screw, a wedge coacting with one end thereof, a non-rotatable socket for the screw, a spring-pressed wedge-block coacting with said wedge, a movable locking-block between the wedges, and a hand-controlled device arranged to release the locking-block when desired; substantially as described.

7. A relief device for rolls, having a nonrotatable socket, a screw arranged to revolve and move endwise therein, under the pressure of the bearings, and a yielding pressure device arranged to prevent rotation and movement of the screw until the pressure reaches a determined limit; substantially as described.

In testimony whereof I have hereunto set my hand.

CORNELIUS KUI-ILE WIND.

Witnesses:

G. I. HOLDSHIP, H. M. OORWIN.

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