US716243A - Safety apparatus for hoisting-engines. - Google Patents

Description

Nu. 7|6,2`43. Patented Dec. I6, |902.

.1. 'KAnLlKla M. WITTE.V SAFETY APPAnATu'sl-'on HolsTlNG-ENGINES.

(Application med my 17, 1902.)

(Np Model.) 3 Sheets-Sheet v2.

Tn: Norms versus co, Hom-ums. WASHINGTON, u4 n.

lPaten'ced Dec. I6, |902.

J. .KA'RLIK & M. WITTE. SAFETY APPARATUS FOR HUISTING ENGINES.

(Application filed Muy 17, 1902:)

3 sheets-sheet 3.

(No Model.)A

.THE Nonms Pneus so. moro-umd, wAsNmGToN, o. c.

` y furnished with several contact-pieces adapty of the complete apparatus; Fig. 2, a portion ,4

the first ligure.

' tates a shaft w,'vvhichby means of a worm- ATENT Prien.

JAROSLAV KARLIK, OF GOTTESBERG,

AND MART'IN WITTE, OF WALDEN- BURG, GERMANY.

SAFETY APPARATUS Fo Fll HOISTING-ENGINES.

SPECIFICATION forming part of Letters Patent No. 716,243, dated December 16, 1902.

Alimitate@ flied May 17,1902.

To all whom may concern.- i

Be it known that we, JARosLAv KARLIK, a resident of Gottesberg,and MARTIN WITTE, a resident of Waldenburg, Silesia, Germany, subjects of the German Emperor, have ini Vented certain new and useful Safety Apparatus for Hoisting-Engines, of which the fol" lowing is a specification.

This invention has reference to automatic controlling or safety apparatus for winding and hoisting engines, which consists mainly of an ordinary travel-index and a threebranch mercury-tube, also controlled by the engine. The special feature of the apparatus consists in the arrangement whereby the said pointer during the first and last revolution of the engine is caused to impart motion to a suspended oscillatory segmental plate ed to come into engagement with a contactpin operated by the said three-branch mercury-tube when an excess of speed ofthe cage occurs at any time during its journey. These means coperate so as to close electric currents which are utilized either to ignitea cartridge for starting the steam-brake Ior to operate intermediate apparatus for closing the steam-inlet valve. The contact-pieces are so formed with regard to the curve described by the contact-pin during the normal winding velocity as to Vcoincide at the4 two outer ends with the said curve, While allowing large space for play for the con tact-pin at the middle of the curve.

The apparatus embodying our invention is illustrated in theannexed drawings, in Which- Y Figure l is an elevation, partly 'in section,

of the same, with parts shown in different positions; and Fig. 3 a transverse section of A chain-gear 7a, driven by the engine, ro-

gear g imparts rotarymoticn to a plate S', upon which is fast the travel-index A stationary disk or plate Sz'has .marked upon it the points for the .landing-stage or stoppingpoints, as also the various halting-places for the galleries. Upon a fixed pivot-bolt b is suspended an oscillatory segmental plate P,

vd in the usual manner.

which carries metallic contact-pieces L and L' upon an insulated base and another metallic contact L2. During thefgreater part of the winding motion the segmental plate P depends vertically, as in Fig. l; but toward the end of the motion, from the moment When speed is to be gradually reduced, the pin not the disk S', corresponding to the loadingstage, strikes against the segmental plateP 1and moves the same out of the vertical line p .p to its end position p' 19', as indicated in Fig. 2. Toward the next winding motion the segmental plate P is moved by the pin fm, i

corresponding to the bank, from the opposite side to the end position p2 p2. When starting from an intermediate stage, the pin n on .the disk S' is placed in the corresponding hole n'. h i

The shaft w is furnished with a belt-pulley r for driving the three-branch mercury-tube As the speed of the mercury-tube increases with the accelerated motion of the engine, so the mercury rises in The three-branch mercury-tube comprises a straight vertical tube at the center and two outer elbow-tubes, all in intercommunication and filled with mercury up to the bend inthe elbow-tubes, as indicated at Fig. 2. The central branch is furnished with a Wooden or iron float s, riding upon the. mercury-level and adapted to descend with the falling mercurylevel in the middle branch during the rotation of the tube around its vertical axis, and thereby communicates motion to the contact-pin c through the intervention of the lever 7L. 'llhe tube is`shown in Fig. 2 as it being at rest, While in Figs. l and 3 it is shown as it `would appear during rotation, Fig. 3 being a section.

The contact-plates L and L', Fig. l, are connected in the circuit A (V' 7L c L or L' c h V') derived from a source V' of electricity, and such current when being closed lires a car- ICO tridge I, acting upon a piston F, which latter then immediately reverses the valve of the steam or compressed-air brake by means of a lever G and draw-bar J, or it may be otherwise utilized to produce the im mediate stopping of the engine. The contact piece or block L2 is interpolated in the circuit B (V h c L2 a, R V) derived from the same source of electricity V. The closing of this current causes an alarm-signal to be sounded, and at the same time the magnet R operates to close the strong Working or main current c derived from the source of electricity V2, and which current may be utilized to operate any known apparatus for throttling the steamvalve for the period While contact is established. For deep shafts the current may be caused to operate the throttle-valve and a retarding-brake, so as to reduce the speed of the engine. In the arrangement shown by way of an exam ple in Fig. l the closing of the circuit C (V2 S R V2) causes the core of the solenoid S to be lifted, and thereby lift the spindle of the balanced steam th rottling-valve D, so cutting off steam for the period of the contact. The herein-described arrangement therefore will, if the speed is not sufficiently low toward the end of travel, start the steambrake and with excessive speed during the median part of the travel Will operate both the throttle-valves and an alarm.

When erecting the apparatus, the contactpin is first caused for several correctly-effected trial trips to mark upon a paper placed over the segmental plate,so as to register the curve K for the Whole course, and then afterward shape the contact-bars in accordance with the diagram so traced. In this manner the apparatus Will be highly accurate and has the advantage that it can be constantly controlled for correct adjustment, While, moreover, permitting at any time diagrams to be taken for the entire course. Further, the irst impulse of the apparatus at an excess of speed is transmitted electrically and utilized to fire a cartridge for operating a small piston, Which immediately reverses the valve of the steambrake, so that in this manner the time between the first impulse of the apparatus and the action of the steam-brake is practically reduced to a minimum of time.

The apparatus is equally adaptable for use With Tenten pointers which travel in a circular path, as also With those that have a vertical reciprocating motion.

Having now fully described our invention,

what We claim, and desire to secure by Letters Patent, is-

1. The combination of segmental plate P, contact-pieces L,L insulated thereon,pointer plate S from which said plate is pivotally snspended and by Which it is operated, electric circuit A in which said contact-pieces are connected, the centrifugally-controlled column of mercury, the float resting thereon, the circuit-closing contact-pin operated by said float, the cartridge included in the circuit, and

-means operated by the explosion of said cartridge for actuating a brake.

2. The combination of segmental plate P, contact-pieces L2, pointer-plate S from which said plate is pivotallysuspended and by which it is operated, electric circuit B, electromagnet R in said circuit, the circuit-closing contact-pin c, the float by which said pin is operated, the centrifugally-controlled column of mercury on which said float rests,the Working circuit closed by magnet R when energized, and mechanism controlled by said circuit to operate the throttle-valve.

3. The combination of segmental plate P, contact-pieces L, L', L2, pointer-plate S from which said plate is pivotally suspended and by Which it is operated, electric circuits A and B, the cartridge in the former and the electromaguet in the latter, the battery V common to both circuits, the circuit-closing contactpin c, the float by which said pin is operated, the centrifugally-controlled column of mercury on which said float rests, means actuated by the explosion of the cartridge to operate a brake, and means controlled by the electromagnet, When energized, to operate a throttle-valve.

4. The combination of segmental plate P, contact-pieces L, L', L2, pointer-plate S' from which said plate is pivotally suspended and by which it is operated, electric circuits A and B, battery V common to both circuits, the centrifugally-controlled column of mercury, the float resting thereon, and the circuit-closing contact-pin operated by said oat and adapted to be replaced by a pencil, whereby the curve of the course may be traced prior to shaping and locating said contact-pieces.

In testimony whereof We have hereunto set our hands in presence of tWo Witnesses.

JAROSLAV KARLIK. y MARTIN WITTE.

Vitnesses:

HERMANN BARTsCH, ALBERT SCHENK.

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