US2144124A - Electric signaling mechanism - Google Patents

Description

Jan. 17, 1939.

A. G. ROZYSKIE ELECTRIC S IGNALING MECHANIS M Filed July 15, 1937 .5. 5f ED271515 Patented Jan. 17, 1939 2,144,124

UNITED STATES i ATENT OFFICE ELECTRIC SIGNALING MECHANISM Albert George Rozyskie, Mobile, Ala.

Application July 15, 1937, Serial No. 153,820

3 Claims. (Cl. 20052) This invention relates to electric signal mechapivot pin 20 and has one end fixed to the rear wall nism designed to be applied to a machine to indiof said housing, the other end being bent around cate when a moving part thereof has become disthe rear side of the plate l9, to swing the plate placed from movement in a certain direction bel9 outwardly against the tension of spring l8.

yond a predetermined limit. A pair of electric contacts 23 and 24 are suit- 5 The main object of the invention is to provide ably secured to an insulated block 24' on the rear a device which will automatically operate a warnwall of the housing 2|. These contacts extend ing signal or signals upon displacement of a movon opposite sides of the plate IS in the path of ing unit beyond a predetermined limit. movement of the arms 25 and 26, respectively, of

10 While the invention is applicable to any unit a pole plate 27, suitably secured to and insulated 10 which must have limited movement in any direcfrom the plate l9. The pole plate 21 is electrically tion, it is most sutable for use with endless units, connected by a wire 28 to one of the mains 29 such as belts, chains, wires, etc; and, is particuof a source of electric energy. The contact 24 larly applicable to felt units on paper or board is connected by a wire 30 to a signal lamp 3|, conmaking machines. For convenience, therefore, nected through wire 32 to the ground or return the invention will be described herein as with line 33. The contact 23 is connected by wire 34 Fourdrinier wires, or similar wires of paper mato an audible signal 35 connected by Wire 38 to chines. the ground wire 33.

Other objects of the invention will become ap- In the setting up of this apparatus the contact parent as the detailed description thereof proplate l4 may be adjusted about its pivot I? so as 20 ceeds. to contact with the edge of the felt 5 in such man- In the drawing: ner that the coil spring 22 maintains the arms Figure 1 is a perspective view of the signal and 26 of the pole plate 21 normally spaced mechanism as applied to the frame of a paper from the contacts 23 and 24 against the tension 5 machine; of the spring l8. It will be evident that when the 25 Figure 2 is: a central vertical section through a felt 5 is moved laterally out of its normal position bearing element of said mechanism; and against the plate M, the lever I will be swung Figure 3 is a diagram illustrating the invention about its pivot 8 so as to move the arms 25 and as applied to a number of machines. 26 against the contacts 23 and 24, to operate the 30 As shown particularly in Figure 1 of the drawvisual and audible signals and 3|, respectively. 30 ing, the circuit closing part of the mechanism The audible alarm 35 may be in the nature of a forming the present invention is supported on a buzzer, bell, horn, siren or any other electrically horizontal runner 4, forming part of the frame operated alarm, capable of attracting the attenwork of a machine in which the felt 5 is supported tion of the operator, regardless of the sounds re- 35 on rolls 6 (only one of which is shown), for movesulting from the operation of the machine itself. 35 ment in a direction substantially parallel to the This audible signal may be located in any desired runner 4. position, preferably on the tending side of the The circuit closer part of the mechainsm commachine in which it is used. The visual signal prises a lever l pivoted between its ends by a may be a colored or white light placed in such pivot 8 which is mounted to rotate in ball bearlocation as to be readily seen by the machine 40 ings 9 and I0, enclosed in a casing ll secured by operator. bolts l2 to a flange l3 of the runner 4. A con- Any number of these circuit closing mechatact plate I4 which is semi-elliptical in cross secnisms: may be used on one machine to control a tion, is provided at the center of its concave face corresponding number of visual signals, along with a pair of parallel lugs l5 and I6 straddling with a single audible signal. The diagrammatic 45 and pivoted to one end of the lever l by a pivot layout for such arrangement is illustrated in bolt I! extending through registering apertures Figure 3, wherein the numerals 36, 31, 38 and 39 in the lugs l5 and I6 and the aforesaid end of designate the mechanical combination of elethe lever l. ments shown in Figure l of the drawing. The

The other end of the lever 1 is connected to a visual signals 36, 31, 38' and 39' are connected 50 tension spring l8 having its other end connected by suitable wiring for operation by the respecto a plate l9, the lower end of which is fixed to a tive circuit closing mechanisms 35, 31, 38 and 39. pivot pin 20 journaled at its opposite ends in the The audible signal 35 is shown in Figure 3 as opposite sides of a housing 21 suitably secured to connected for operation simultaneously with any 65 runner 4. A coil spring 22 is coiled around the or all of the visual signals. The operation of this multiple signaling system will be apparent from inspection of the drawing.

Although I have illustrated and described only one form of the invention I am aware of the fact that modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims.

What I claim is:

1. An electric switch for a machine including an endless felt and means for moving the same rectilinearly, said switch comprising: a support adapted tobe fixed adjacent one edge of said felt; a lever pivoted between its ends on said support; a cam pivoted on one end of said lever and having a cam surface adapted to be moved by the adjustment of said cam about its pivot axis toward and from said edge; a circuit closer including a plate pivoted at one end on said support, yielding means connected to said support and plate for moving the free end of said plate away from said edge, and a tension spring connecting the other ends of said lever and plate to maintain the cam surface of the cam plate in yielding contact with said edge.

2. An electric switch for a machine including an endless felt and means for moving the same rectilinearly, said switch comprising: a support adapted to be fixed adjacent one edge of said felt; a lever pivoted between its ends on said support; a cam pivoted on one end of said lever and having a cam surface adapted to be moved by the adjustment of said cam about its pivot axis toward and from said edge; a circuit closer including a plate pivoted at one end on said support; and means connected to said support, plate and lever for holding said cam with its cam surface in yielding contact with said edge.

3. An electric switch for a machine including an endless felt and means for moving the same rectilinearly, said switch comprising: a support adapted to be fixed adjacent one edge of said felt; a lever pivoted between its ends on said support; a cam pivoted on one end of said lever and having a cam surface adapted to be moved by the adjustment of said cam about its pivot axis toward and from said edge; and a circuit closer including means connected to said lever for holding said cam with its surface in yielding. contact, with said edge.

ALBERT GEORGE ROZYSKIE.

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